diff options
Diffstat (limited to 'drivers/mmc')
69 files changed, 3602 insertions, 1941 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile index 12eef393e216..400756ec7c49 100644 --- a/drivers/mmc/Makefile +++ b/drivers/mmc/Makefile @@ -6,5 +6,4 @@ subdir-ccflags-$(CONFIG_MMC_DEBUG) := -DDEBUG obj-$(CONFIG_MMC) += core/ obj-$(CONFIG_MMC) += card/ -obj-$(CONFIG_MMC) += host/ - +obj-$(subst m,y,$(CONFIG_MMC)) += host/ diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 1e0e27cbe987..b1809650b7aa 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -41,7 +41,6 @@ #include <linux/mmc/mmc.h> #include <linux/mmc/sd.h> -#include <asm/system.h> #include <asm/uaccess.h> #include "queue.h" @@ -107,6 +106,8 @@ struct mmc_blk_data { */ unsigned int part_curr; struct device_attribute force_ro; + struct device_attribute power_ro_lock; + int area_type; }; static DEFINE_MUTEX(open_lock); @@ -119,6 +120,7 @@ enum mmc_blk_status { MMC_BLK_ABORT, MMC_BLK_DATA_ERR, MMC_BLK_ECC_ERR, + MMC_BLK_NOMEDIUM, }; module_param(perdev_minors, int, 0444); @@ -165,6 +167,70 @@ static void mmc_blk_put(struct mmc_blk_data *md) mutex_unlock(&open_lock); } +static ssize_t power_ro_lock_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret; + struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); + struct mmc_card *card = md->queue.card; + int locked = 0; + + if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PERM_WP_EN) + locked = 2; + else if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_EN) + locked = 1; + + ret = snprintf(buf, PAGE_SIZE, "%d\n", locked); + + return ret; +} + +static ssize_t power_ro_lock_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int ret; + struct mmc_blk_data *md, *part_md; + struct mmc_card *card; + unsigned long set; + + if (kstrtoul(buf, 0, &set)) + return -EINVAL; + + if (set != 1) + return count; + + md = mmc_blk_get(dev_to_disk(dev)); + card = md->queue.card; + + mmc_claim_host(card->host); + + ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP, + card->ext_csd.boot_ro_lock | + EXT_CSD_BOOT_WP_B_PWR_WP_EN, + card->ext_csd.part_time); + if (ret) + pr_err("%s: Locking boot partition ro until next power on failed: %d\n", md->disk->disk_name, ret); + else + card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN; + + mmc_release_host(card->host); + + if (!ret) { + pr_info("%s: Locking boot partition ro until next power on\n", + md->disk->disk_name); + set_disk_ro(md->disk, 1); + + list_for_each_entry(part_md, &md->part, part) + if (part_md->area_type == MMC_BLK_DATA_AREA_BOOT) { + pr_info("%s: Locking boot partition ro until next power on\n", part_md->disk->disk_name); + set_disk_ro(part_md->disk, 1); + } + } + + mmc_blk_put(md); + return count; +} + static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -266,6 +332,9 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user( goto idata_err; } + if (!idata->buf_bytes) + return idata; + idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL); if (!idata->buf) { err = -ENOMEM; @@ -312,25 +381,6 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, if (IS_ERR(idata)) return PTR_ERR(idata); - cmd.opcode = idata->ic.opcode; - cmd.arg = idata->ic.arg; - cmd.flags = idata->ic.flags; - - data.sg = &sg; - data.sg_len = 1; - data.blksz = idata->ic.blksz; - data.blocks = idata->ic.blocks; - - sg_init_one(data.sg, idata->buf, idata->buf_bytes); - - if (idata->ic.write_flag) - data.flags = MMC_DATA_WRITE; - else - data.flags = MMC_DATA_READ; - - mrq.cmd = &cmd; - mrq.data = &data; - md = mmc_blk_get(bdev->bd_disk); if (!md) { err = -EINVAL; @@ -343,6 +393,48 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, goto cmd_done; } + cmd.opcode = idata->ic.opcode; + cmd.arg = idata->ic.arg; + cmd.flags = idata->ic.flags; + + if (idata->buf_bytes) { + data.sg = &sg; + data.sg_len = 1; + data.blksz = idata->ic.blksz; + data.blocks = idata->ic.blocks; + + sg_init_one(data.sg, idata->buf, idata->buf_bytes); + + if (idata->ic.write_flag) + data.flags = MMC_DATA_WRITE; + else + data.flags = MMC_DATA_READ; + + /* data.flags must already be set before doing this. */ + mmc_set_data_timeout(&data, card); + + /* Allow overriding the timeout_ns for empirical tuning. */ + if (idata->ic.data_timeout_ns) + data.timeout_ns = idata->ic.data_timeout_ns; + + if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) { + /* + * Pretend this is a data transfer and rely on the + * host driver to compute timeout. When all host + * drivers support cmd.cmd_timeout for R1B, this + * can be changed to: + * + * mrq.data = NULL; + * cmd.cmd_timeout = idata->ic.cmd_timeout_ms; + */ + data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000; + } + + mrq.data = &data; + } + + mrq.cmd = &cmd; + mmc_claim_host(card->host); if (idata->ic.is_acmd) { @@ -351,24 +443,6 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev, goto cmd_rel_host; } - /* data.flags must already be set before doing this. */ - mmc_set_data_timeout(&data, card); - /* Allow overriding the timeout_ns for empirical tuning. */ - if (idata->ic.data_timeout_ns) - data.timeout_ns = idata->ic.data_timeout_ns; - - if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) { - /* - * Pretend this is a data transfer and rely on the host driver - * to compute timeout. When all host drivers support - * cmd.cmd_timeout for R1B, this can be changed to: - * - * mrq.data = NULL; - * cmd.cmd_timeout = idata->ic.cmd_timeout_ms; - */ - data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000; - } - mmc_wait_for_req(card->host, &mrq); if (cmd.error) { @@ -565,6 +639,7 @@ static int get_card_status(struct mmc_card *card, u32 *status, int retries) return err; } +#define ERR_NOMEDIUM 3 #define ERR_RETRY 2 #define ERR_ABORT 1 #define ERR_CONTINUE 0 @@ -632,6 +707,9 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, u32 status, stop_status = 0; int err, retry; + if (mmc_card_removed(card)) + return ERR_NOMEDIUM; + /* * Try to get card status which indicates both the card state * and why there was no response. If the first attempt fails, @@ -648,8 +726,12 @@ static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, } /* We couldn't get a response from the card. Give up. */ - if (err) + if (err) { + /* Check if the card is removed */ + if (mmc_detect_card_removed(card->host)) + return ERR_NOMEDIUM; return ERR_ABORT; + } /* Flag ECC errors */ if ((status & R1_CARD_ECC_FAILED) || @@ -922,6 +1004,8 @@ static int mmc_blk_err_check(struct mmc_card *card, return MMC_BLK_RETRY; case ERR_ABORT: return MMC_BLK_ABORT; + case ERR_NOMEDIUM: + return MMC_BLK_NOMEDIUM; case ERR_CONTINUE: break; } @@ -995,6 +1079,7 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, struct mmc_blk_request *brq = &mqrq->brq; struct request *req = mqrq->req; struct mmc_blk_data *md = mq->data; + bool do_data_tag; /* * Reliable writes are used to implement Forced Unit Access and @@ -1071,6 +1156,16 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, mmc_apply_rel_rw(brq, card, req); /* + * Data tag is used only during writing meta data to speed + * up write and any subsequent read of this meta data + */ + do_data_tag = (card->ext_csd.data_tag_unit_size) && + (req->cmd_flags & REQ_META) && + (rq_data_dir(req) == WRITE) && + ((brq->data.blocks * brq->data.blksz) >= + card->ext_csd.data_tag_unit_size); + + /* * Pre-defined multi-block transfers are preferable to * open ended-ones (and necessary for reliable writes). * However, it is not sufficient to just send CMD23, @@ -1088,13 +1183,13 @@ static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, * We'll avoid using CMD23-bounded multiblock writes for * these, while retaining features like reliable writes. */ - - if ((md->flags & MMC_BLK_CMD23) && - mmc_op_multi(brq->cmd.opcode) && - (do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23))) { + if ((md->flags & MMC_BLK_CMD23) && mmc_op_multi(brq->cmd.opcode) && + (do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23) || + do_data_tag)) { brq->sbc.opcode = MMC_SET_BLOCK_COUNT; brq->sbc.arg = brq->data.blocks | - (do_rel_wr ? (1 << 31) : 0); + (do_rel_wr ? (1 << 31) : 0) | + (do_data_tag ? (1 << 29) : 0); brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; brq->mrq.sbc = &brq->sbc; } @@ -1255,6 +1350,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) if (!ret) goto start_new_req; break; + case MMC_BLK_NOMEDIUM: + goto cmd_abort; } if (ret) { @@ -1271,6 +1368,8 @@ static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) cmd_abort: spin_lock_irq(&md->lock); + if (mmc_card_removed(card)) + req->cmd_flags |= REQ_QUIET; while (ret) ret = __blk_end_request(req, -EIO, blk_rq_cur_bytes(req)); spin_unlock_irq(&md->lock); @@ -1339,7 +1438,8 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, struct device *parent, sector_t size, bool default_ro, - const char *subname) + const char *subname, + int area_type) { struct mmc_blk_data *md; int devidx, ret; @@ -1364,11 +1464,12 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, if (!subname) { md->name_idx = find_first_zero_bit(name_use, max_devices); __set_bit(md->name_idx, name_use); - } - else + } else md->name_idx = ((struct mmc_blk_data *) dev_to_disk(parent)->private_data)->name_idx; + md->area_type = area_type; + /* * Set the read-only status based on the supported commands * and the write protect switch. @@ -1462,7 +1563,8 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) size = card->csd.capacity << (card->csd.read_blkbits - 9); } - md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL); + md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL, + MMC_BLK_DATA_AREA_MAIN); return md; } @@ -1471,13 +1573,14 @@ static int mmc_blk_alloc_part(struct mmc_card *card, unsigned int part_type, sector_t size, bool default_ro, - const char *subname) + const char *subname, + int area_type) { char cap_str[10]; struct mmc_blk_data *part_md; part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro, - subname); + subname, area_type); if (IS_ERR(part_md)) return PTR_ERR(part_md); part_md->part_type = part_type; @@ -1510,7 +1613,8 @@ static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md) card->part[idx].part_cfg, card->part[idx].size >> 9, card->part[idx].force_ro, - card->part[idx].name); + card->part[idx].name, + card->part[idx].area_type); if (ret) return ret; } @@ -1519,29 +1623,18 @@ static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md) return ret; } -static int -mmc_blk_set_blksize(struct mmc_blk_data *md, struct mmc_card *card) -{ - int err; - - mmc_claim_host(card->host); - err = mmc_set_blocklen(card, 512); - mmc_release_host(card->host); - - if (err) { - pr_err("%s: unable to set block size to 512: %d\n", - md->disk->disk_name, err); - return -EINVAL; - } - - return 0; -} - static void mmc_blk_remove_req(struct mmc_blk_data *md) { + struct mmc_card *card; + if (md) { + card = md->queue.card; if (md->disk->flags & GENHD_FL_UP) { device_remove_file(disk_to_dev(md->disk), &md->force_ro); + if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && + card->ext_csd.boot_ro_lockable) + device_remove_file(disk_to_dev(md->disk), + &md->power_ro_lock); /* Stop new requests from getting into the queue */ del_gendisk(md->disk); @@ -1570,6 +1663,7 @@ static void mmc_blk_remove_parts(struct mmc_card *card, static int mmc_add_disk(struct mmc_blk_data *md) { int ret; + struct mmc_card *card = md->queue.card; add_disk(md->disk); md->force_ro.show = force_ro_show; @@ -1579,18 +1673,54 @@ static int mmc_add_disk(struct mmc_blk_data *md) md->force_ro.attr.mode = S_IRUGO | S_IWUSR; ret = device_create_file(disk_to_dev(md->disk), &md->force_ro); if (ret) - del_gendisk(md->disk); + goto force_ro_fail; + + if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && + card->ext_csd.boot_ro_lockable) { + umode_t mode; + + if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS) + mode = S_IRUGO; + else + mode = S_IRUGO | S_IWUSR; + + md->power_ro_lock.show = power_ro_lock_show; + md->power_ro_lock.store = power_ro_lock_store; + sysfs_attr_init(&md->power_ro_lock.attr); + md->power_ro_lock.attr.mode = mode; + md->power_ro_lock.attr.name = + "ro_lock_until_next_power_on"; + ret = device_create_file(disk_to_dev(md->disk), + &md->power_ro_lock); + if (ret) + goto power_ro_lock_fail; + } + return ret; + +power_ro_lock_fail: + device_remove_file(disk_to_dev(md->disk), &md->force_ro); +force_ro_fail: + del_gendisk(md->disk); return ret; } +#define CID_MANFID_SANDISK 0x2 +#define CID_MANFID_TOSHIBA 0x11 +#define CID_MANFID_MICRON 0x13 + static const struct mmc_fixup blk_fixups[] = { - MMC_FIXUP("SEM02G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), - MMC_FIXUP("SEM04G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), - MMC_FIXUP("SEM08G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), - MMC_FIXUP("SEM16G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), - MMC_FIXUP("SEM32G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), + MMC_FIXUP("SEM02G", CID_MANFID_SANDISK, 0x100, add_quirk, + MMC_QUIRK_INAND_CMD38), + MMC_FIXUP("SEM04G", CID_MANFID_SANDISK, 0x100, add_quirk, + MMC_QUIRK_INAND_CMD38), + MMC_FIXUP("SEM08G", CID_MANFID_SANDISK, 0x100, add_quirk, + MMC_QUIRK_INAND_CMD38), + MMC_FIXUP("SEM16G", CID_MANFID_SANDISK, 0x100, add_quirk, + MMC_QUIRK_INAND_CMD38), + MMC_FIXUP("SEM32G", CID_MANFID_SANDISK, 0x100, add_quirk, + MMC_QUIRK_INAND_CMD38), /* * Some MMC cards experience performance degradation with CMD23 @@ -1600,18 +1730,18 @@ static const struct mmc_fixup blk_fixups[] = * * N.B. This doesn't affect SD cards. */ - MMC_FIXUP("MMC08G", 0x11, CID_OEMID_ANY, add_quirk_mmc, + MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, MMC_QUIRK_BLK_NO_CMD23), - MMC_FIXUP("MMC16G", 0x11, CID_OEMID_ANY, add_quirk_mmc, + MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, MMC_QUIRK_BLK_NO_CMD23), - MMC_FIXUP("MMC32G", 0x11, CID_OEMID_ANY, add_quirk_mmc, + MMC_FIXUP("MMC32G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, MMC_QUIRK_BLK_NO_CMD23), /* * Some Micron MMC cards needs longer data read timeout than * indicated in CSD. */ - MMC_FIXUP(CID_NAME_ANY, 0x13, 0x200, add_quirk_mmc, + MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc, MMC_QUIRK_LONG_READ_TIME), END_FIXUP @@ -1620,7 +1750,6 @@ static const struct mmc_fixup blk_fixups[] = static int mmc_blk_probe(struct mmc_card *card) { struct mmc_blk_data *md, *part_md; - int err; char cap_str[10]; /* @@ -1633,10 +1762,6 @@ static int mmc_blk_probe(struct mmc_card *card) if (IS_ERR(md)) return PTR_ERR(md); - err = mmc_blk_set_blksize(md, card); - if (err) - goto out; - string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2, cap_str, sizeof(cap_str)); pr_info("%s: %s %s %s %s\n", @@ -1661,7 +1786,7 @@ static int mmc_blk_probe(struct mmc_card *card) out: mmc_blk_remove_parts(card, md); mmc_blk_remove_req(md); - return err; + return 0; } static void mmc_blk_remove(struct mmc_card *card) @@ -1697,8 +1822,6 @@ static int mmc_blk_resume(struct mmc_card *card) struct mmc_blk_data *md = mmc_get_drvdata(card); if (md) { - mmc_blk_set_blksize(md, card); - /* * Resume involves the card going into idle state, * so current partition is always the main one. diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index e99bdc18002d..759714ed6bee 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -1581,6 +1581,7 @@ static int mmc_test_area_init(struct mmc_test_card *test, int erase, int fill) t->max_segs = test->card->host->max_segs; t->max_seg_sz = test->card->host->max_seg_size; + t->max_seg_sz -= t->max_seg_sz % 512; t->max_tfr = t->max_sz; if (t->max_tfr >> 9 > test->card->host->max_blk_count) diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index dcad59cbfef1..2517547b4366 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -29,6 +29,8 @@ */ static int mmc_prep_request(struct request_queue *q, struct request *req) { + struct mmc_queue *mq = q->queuedata; + /* * We only like normal block requests and discards. */ @@ -37,6 +39,9 @@ static int mmc_prep_request(struct request_queue *q, struct request *req) return BLKPREP_KILL; } + if (mq && mmc_card_removed(mq->card)) + return BLKPREP_KILL; + req->cmd_flags |= REQ_DONTPREP; return BLKPREP_OK; diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index 2c151e18c9e8..5a2cbfac66d2 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -750,15 +750,12 @@ static int sdio_uart_install(struct tty_driver *driver, struct tty_struct *tty) { int idx = tty->index; struct sdio_uart_port *port = sdio_uart_port_get(idx); - int ret = tty_init_termios(tty); + int ret = tty_standard_install(driver, tty); - if (ret == 0) { - tty_driver_kref_get(driver); - tty->count++; + if (ret == 0) /* This is the ref sdio_uart_port get provided */ tty->driver_data = port; - driver->ttys[idx] = tty; - } else + else sdio_uart_port_put(port); return ret; } @@ -1178,7 +1175,6 @@ static int __init sdio_uart_init(void) if (!tty_drv) return -ENOMEM; - tty_drv->owner = THIS_MODULE; tty_drv->driver_name = "sdio_uart"; tty_drv->name = "ttySDIO"; tty_drv->major = 0; /* dynamically allocated */ diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile index 639501970b41..dca4428380f1 100644 --- a/drivers/mmc/core/Makefile +++ b/drivers/mmc/core/Makefile @@ -7,6 +7,6 @@ mmc_core-y := core.o bus.o host.o \ mmc.o mmc_ops.o sd.o sd_ops.o \ sdio.o sdio_ops.o sdio_bus.o \ sdio_cis.o sdio_io.o sdio_irq.o \ - quirks.o + quirks.o cd-gpio.o mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 6be49249895a..3f606068d552 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -267,6 +267,15 @@ int mmc_add_card(struct mmc_card *card) { int ret; const char *type; + const char *uhs_bus_speed_mode = ""; + static const char *const uhs_speeds[] = { + [UHS_SDR12_BUS_SPEED] = "SDR12 ", + [UHS_SDR25_BUS_SPEED] = "SDR25 ", + [UHS_SDR50_BUS_SPEED] = "SDR50 ", + [UHS_SDR104_BUS_SPEED] = "SDR104 ", + [UHS_DDR50_BUS_SPEED] = "DDR50 ", + }; + dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card->host), card->rca); @@ -296,6 +305,10 @@ int mmc_add_card(struct mmc_card *card) break; } + if (mmc_sd_card_uhs(card) && + (card->sd_bus_speed < ARRAY_SIZE(uhs_speeds))) + uhs_bus_speed_mode = uhs_speeds[card->sd_bus_speed]; + if (mmc_host_is_spi(card->host)) { pr_info("%s: new %s%s%s card on SPI\n", mmc_hostname(card->host), @@ -303,12 +316,13 @@ int mmc_add_card(struct mmc_card *card) mmc_card_ddr_mode(card) ? "DDR " : "", type); } else { - printk(KERN_INFO "%s: new %s%s%s card at address %04x\n", + pr_info("%s: new %s%s%s%s%s card at address %04x\n", mmc_hostname(card->host), - mmc_sd_card_uhs(card) ? "ultra high speed " : + mmc_card_uhs(card) ? "ultra high speed " : (mmc_card_highspeed(card) ? "high speed " : ""), + (mmc_card_hs200(card) ? "HS200 " : ""), mmc_card_ddr_mode(card) ? "DDR " : "", - type, card->rca); + uhs_bus_speed_mode, type, card->rca); } #ifdef CONFIG_DEBUG_FS diff --git a/drivers/mmc/core/cd-gpio.c b/drivers/mmc/core/cd-gpio.c new file mode 100644 index 000000000000..29de31e260dd --- /dev/null +++ b/drivers/mmc/core/cd-gpio.c @@ -0,0 +1,79 @@ +/* + * Generic GPIO card-detect helper + * + * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/err.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/jiffies.h> +#include <linux/mmc/host.h> +#include <linux/module.h> +#include <linux/slab.h> + +struct mmc_cd_gpio { + unsigned int gpio; + char label[0]; +}; + +static irqreturn_t mmc_cd_gpio_irqt(int irq, void *dev_id) +{ + /* Schedule a card detection after a debounce timeout */ + mmc_detect_change(dev_id, msecs_to_jiffies(100)); + return IRQ_HANDLED; +} + +int mmc_cd_gpio_request(struct mmc_host *host, unsigned int gpio) +{ + size_t len = strlen(dev_name(host->parent)) + 4; + struct mmc_cd_gpio *cd; + int irq = gpio_to_irq(gpio); + int ret; + + if (irq < 0) + return irq; + + cd = kmalloc(sizeof(*cd) + len, GFP_KERNEL); + if (!cd) + return -ENOMEM; + + snprintf(cd->label, len, "%s cd", dev_name(host->parent)); + + ret = gpio_request_one(gpio, GPIOF_DIR_IN, cd->label); + if (ret < 0) + goto egpioreq; + + ret = request_threaded_irq(irq, NULL, mmc_cd_gpio_irqt, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + cd->label, host); + if (ret < 0) + goto eirqreq; + + cd->gpio = gpio; + host->hotplug.irq = irq; + host->hotplug.handler_priv = cd; + + return 0; + +eirqreq: + gpio_free(gpio); +egpioreq: + kfree(cd); + return ret; +} +EXPORT_SYMBOL(mmc_cd_gpio_request); + +void mmc_cd_gpio_free(struct mmc_host *host) +{ + struct mmc_cd_gpio *cd = host->hotplug.handler_priv; + + free_irq(host->hotplug.irq, host); + gpio_free(cd->gpio); + kfree(cd); +} +EXPORT_SYMBOL(mmc_cd_gpio_free); diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 950b97d7412a..7474c47b9c08 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -48,7 +48,7 @@ static struct workqueue_struct *workqueue; * performance cost, and for other reasons may not always be desired. * So we allow it it to be disabled. */ -int use_spi_crc = 1; +bool use_spi_crc = 1; module_param(use_spi_crc, bool, 0); /* @@ -58,9 +58,9 @@ module_param(use_spi_crc, bool, 0); * overridden if necessary. */ #ifdef CONFIG_MMC_UNSAFE_RESUME -int mmc_assume_removable; +bool mmc_assume_removable; #else -int mmc_assume_removable = 1; +bool mmc_assume_removable = 1; #endif EXPORT_SYMBOL(mmc_assume_removable); module_param_named(removable, mmc_assume_removable, bool, 0644); @@ -140,7 +140,7 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq) cmd->retries = 0; } - if (err && cmd->retries) { + if (err && cmd->retries && !mmc_card_removed(host->card)) { /* * Request starter must handle retries - see * mmc_wait_for_req_done(). @@ -188,6 +188,12 @@ mmc_start_request(struct mmc_host *host, struct mmc_request *mrq) struct scatterlist *sg; #endif + if (mrq->sbc) { + pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n", + mmc_hostname(host), mrq->sbc->opcode, + mrq->sbc->arg, mrq->sbc->flags); + } + pr_debug("%s: starting CMD%u arg %08x flags %08x\n", mmc_hostname(host), mrq->cmd->opcode, mrq->cmd->arg, mrq->cmd->flags); @@ -243,11 +249,17 @@ static void mmc_wait_done(struct mmc_request *mrq) complete(&mrq->completion); } -static void __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) +static int __mmc_start_req(struct mmc_host *host, struct mmc_request *mrq) { init_completion(&mrq->completion); mrq->done = mmc_wait_done; + if (mmc_card_removed(host->card)) { + mrq->cmd->error = -ENOMEDIUM; + complete(&mrq->completion); + return -ENOMEDIUM; + } mmc_start_request(host, mrq); + return 0; } static void mmc_wait_for_req_done(struct mmc_host *host, @@ -259,7 +271,8 @@ static void mmc_wait_for_req_done(struct mmc_host *host, wait_for_completion(&mrq->completion); cmd = mrq->cmd; - if (!cmd->error || !cmd->retries) + if (!cmd->error || !cmd->retries || + mmc_card_removed(host->card)) break; pr_debug("%s: req failed (CMD%u): %d, retrying...\n", @@ -284,8 +297,11 @@ static void mmc_wait_for_req_done(struct mmc_host *host, static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq, bool is_first_req) { - if (host->ops->pre_req) + if (host->ops->pre_req) { + mmc_host_clk_hold(host); host->ops->pre_req(host, mrq, is_first_req); + mmc_host_clk_release(host); + } } /** @@ -300,8 +316,11 @@ static void mmc_pre_req(struct mmc_host *host, struct mmc_request *mrq, static void mmc_post_req(struct mmc_host *host, struct mmc_request *mrq, int err) { - if (host->ops->post_req) + if (host->ops->post_req) { + mmc_host_clk_hold(host); host->ops->post_req(host, mrq, err); + mmc_host_clk_release(host); + } } /** @@ -324,6 +343,7 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, struct mmc_async_req *areq, int *error) { int err = 0; + int start_err = 0; struct mmc_async_req *data = host->areq; /* Prepare a new request */ @@ -333,30 +353,23 @@ struct mmc_async_req *mmc_start_req(struct mmc_host *host, if (host->areq) { mmc_wait_for_req_done(host, host->areq->mrq); err = host->areq->err_check(host->card, host->areq); - if (err) { - /* post process the completed failed request */ - mmc_post_req(host, host->areq->mrq, 0); - if (areq) - /* - * Cancel the new prepared request, because - * it can't run until the failed - * request has been properly handled. - */ - mmc_post_req(host, areq->mrq, -EINVAL); - - host->areq = NULL; - goto out; - } } - if (areq) - __mmc_start_req(host, areq->mrq); + if (!err && areq) + start_err = __mmc_start_req(host, areq->mrq); if (host->areq) mmc_post_req(host, host->areq->mrq, 0); - host->areq = areq; - out: + /* Cancel a prepared request if it was not started. */ + if ((err || start_err) && areq) + mmc_post_req(host, areq->mrq, -EINVAL); + + if (err) + host->areq = NULL; + else + host->areq = areq; + if (error) *error = err; return data; @@ -514,10 +527,14 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card) if (data->flags & MMC_DATA_WRITE) /* - * The limit is really 250 ms, but that is - * insufficient for some crappy cards. + * The MMC spec "It is strongly recommended + * for hosts to implement more than 500ms + * timeout value even if the card indicates + * the 250ms maximum busy length." Even the + * previous value of 300ms is known to be + * insufficient for some cards. */ - limit_us = 300000; + limit_us = 3000000; else limit_us = 100000; @@ -587,101 +604,6 @@ unsigned int mmc_align_data_size(struct mmc_card *card, unsigned int sz) EXPORT_SYMBOL(mmc_align_data_size); /** - * mmc_host_enable - enable a host. - * @host: mmc host to enable - * - * Hosts that support power saving can use the 'enable' and 'disable' - * methods to exit and enter power saving states. For more information - * see comments for struct mmc_host_ops. - */ -int mmc_host_enable(struct mmc_host *host) -{ - if (!(host->caps & MMC_CAP_DISABLE)) - return 0; - - if (host->en_dis_recurs) - return 0; - - if (host->nesting_cnt++) - return 0; - - cancel_delayed_work_sync(&host->disable); - - if (host->enabled) - return 0; - - if (host->ops->enable) { - int err; - - host->en_dis_recurs = 1; - err = host->ops->enable(host); - host->en_dis_recurs = 0; - - if (err) { - pr_debug("%s: enable error %d\n", - mmc_hostname(host), err); - return err; - } - } - host->enabled = 1; - return 0; -} -EXPORT_SYMBOL(mmc_host_enable); - -static int mmc_host_do_disable(struct mmc_host *host, int lazy) -{ - if (host->ops->disable) { - int err; - - host->en_dis_recurs = 1; - err = host->ops->disable(host, lazy); - host->en_dis_recurs = 0; - - if (err < 0) { - pr_debug("%s: disable error %d\n", - mmc_hostname(host), err); - return err; - } - if (err > 0) { - unsigned long delay = msecs_to_jiffies(err); - - mmc_schedule_delayed_work(&host->disable, delay); - } - } - host->enabled = 0; - return 0; -} - -/** - * mmc_host_disable - disable a host. - * @host: mmc host to disable - * - * Hosts that support power saving can use the 'enable' and 'disable' - * methods to exit and enter power saving states. For more information - * see comments for struct mmc_host_ops. - */ -int mmc_host_disable(struct mmc_host *host) -{ - int err; - - if (!(host->caps & MMC_CAP_DISABLE)) - return 0; - - if (host->en_dis_recurs) - return 0; - - if (--host->nesting_cnt) - return 0; - - if (!host->enabled) - return 0; - - err = mmc_host_do_disable(host, 0); - return err; -} -EXPORT_SYMBOL(mmc_host_disable); - -/** * __mmc_claim_host - exclusively claim a host * @host: mmc host to claim * @abort: whether or not the operation should be aborted @@ -719,8 +641,8 @@ int __mmc_claim_host(struct mmc_host *host, atomic_t *abort) wake_up(&host->wq); spin_unlock_irqrestore(&host->lock, flags); remove_wait_queue(&host->wq, &wait); - if (!stop) - mmc_host_enable(host); + if (host->ops->enable && !stop && host->claim_cnt == 1) + host->ops->enable(host); return stop; } @@ -745,21 +667,28 @@ int mmc_try_claim_host(struct mmc_host *host) claimed_host = 1; } spin_unlock_irqrestore(&host->lock, flags); + if (host->ops->enable && claimed_host && host->claim_cnt == 1) + host->ops->enable(host); return claimed_host; } EXPORT_SYMBOL(mmc_try_claim_host); /** - * mmc_do_release_host - release a claimed host + * mmc_release_host - release a host * @host: mmc host to release * - * If you successfully claimed a host, this function will - * release it again. + * Release a MMC host, allowing others to claim the host + * for their operations. */ -void mmc_do_release_host(struct mmc_host *host) +void mmc_release_host(struct mmc_host *host) { unsigned long flags; + WARN_ON(!host->claimed); + + if (host->ops->disable && host->claim_cnt == 1) + host->ops->disable(host); + spin_lock_irqsave(&host->lock, flags); if (--host->claim_cnt) { /* Release for nested claim */ @@ -771,67 +700,6 @@ void mmc_do_release_host(struct mmc_host *host) wake_up(&host->wq); } } -EXPORT_SYMBOL(mmc_do_release_host); - -void mmc_host_deeper_disable(struct work_struct *work) -{ - struct mmc_host *host = - container_of(work, struct mmc_host, disable.work); - - /* If the host is claimed then we do not want to disable it anymore */ - if (!mmc_try_claim_host(host)) - return; - mmc_host_do_disable(host, 1); - mmc_do_release_host(host); -} - -/** - * mmc_host_lazy_disable - lazily disable a host. - * @host: mmc host to disable - * - * Hosts that support power saving can use the 'enable' and 'disable' - * methods to exit and enter power saving states. For more information - * see comments for struct mmc_host_ops. - */ -int mmc_host_lazy_disable(struct mmc_host *host) -{ - if (!(host->caps & MMC_CAP_DISABLE)) - return 0; - - if (host->en_dis_recurs) - return 0; - - if (--host->nesting_cnt) - return 0; - - if (!host->enabled) - return 0; - - if (host->disable_delay) { - mmc_schedule_delayed_work(&host->disable, - msecs_to_jiffies(host->disable_delay)); - return 0; - } else - return mmc_host_do_disable(host, 1); -} -EXPORT_SYMBOL(mmc_host_lazy_disable); - -/** - * mmc_release_host - release a host - * @host: mmc host to release - * - * Release a MMC host, allowing others to claim the host - * for their operations. - */ -void mmc_release_host(struct mmc_host *host) -{ - WARN_ON(!host->claimed); - - mmc_host_lazy_disable(host); - - mmc_do_release_host(host); -} - EXPORT_SYMBOL(mmc_release_host); /* @@ -1115,6 +983,10 @@ int mmc_regulator_set_ocr(struct mmc_host *mmc, * might not allow this operation */ voltage = regulator_get_voltage(supply); + + if (mmc->caps2 & MMC_CAP2_BROKEN_VOLTAGE) + min_uV = max_uV = voltage; + if (voltage < 0) result = voltage; else if (voltage < min_uV || voltage > max_uV) @@ -1197,8 +1069,11 @@ int mmc_set_signal_voltage(struct mmc_host *host, int signal_voltage, bool cmd11 host->ios.signal_voltage = signal_voltage; - if (host->ops->start_signal_voltage_switch) + if (host->ops->start_signal_voltage_switch) { + mmc_host_clk_hold(host); err = host->ops->start_signal_voltage_switch(host, &host->ios); + mmc_host_clk_release(host); + } return err; } @@ -1233,6 +1108,7 @@ static void mmc_poweroff_notify(struct mmc_host *host) int err = 0; card = host->card; + mmc_claim_host(host); /* * Send power notify command only if card @@ -1263,6 +1139,7 @@ static void mmc_poweroff_notify(struct mmc_host *host) /* Set the card state to no notification after the poweroff */ card->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION; } + mmc_release_host(host); } /* @@ -1321,12 +1198,28 @@ static void mmc_power_up(struct mmc_host *host) void mmc_power_off(struct mmc_host *host) { + int err = 0; mmc_host_clk_hold(host); host->ios.clock = 0; host->ios.vdd = 0; - mmc_poweroff_notify(host); + /* + * For eMMC 4.5 device send AWAKE command before + * POWER_OFF_NOTIFY command, because in sleep state + * eMMC 4.5 devices respond to only RESET and AWAKE cmd + */ + if (host->card && mmc_card_is_sleep(host->card) && + host->bus_ops->resume) { + err = host->bus_ops->resume(host); + + if (!err) + mmc_poweroff_notify(host); + else + pr_warning("%s: error %d during resume " + "(continue with poweroff sequence)\n", + mmc_hostname(host), err); + } /* * Reset ocr mask to be the highest possible voltage supported for @@ -1456,7 +1349,7 @@ void mmc_detect_change(struct mmc_host *host, unsigned long delay) WARN_ON(host->removed); spin_unlock_irqrestore(&host->lock, flags); #endif - + host->detect_change = 1; mmc_schedule_delayed_work(&host->detect, delay); } @@ -2027,6 +1920,9 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) */ mmc_hw_reset_for_init(host); + /* Initialization should be done at 3.3 V I/O voltage. */ + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + /* * sdio_reset sends CMD52 to reset card. Since we do not know * if the card is being re-initialized, just send it. CMD52 @@ -2049,6 +1945,61 @@ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq) return -EIO; } +int _mmc_detect_card_removed(struct mmc_host *host) +{ + int ret; + + if ((host->caps & MMC_CAP_NONREMOVABLE) || !host->bus_ops->alive) + return 0; + + if (!host->card || mmc_card_removed(host->card)) + return 1; + + ret = host->bus_ops->alive(host); + if (ret) { + mmc_card_set_removed(host->card); + pr_debug("%s: card remove detected\n", mmc_hostname(host)); + } + + return ret; +} + +int mmc_detect_card_removed(struct mmc_host *host) +{ + struct mmc_card *card = host->card; + int ret; + + WARN_ON(!host->claimed); + + if (!card) + return 1; + + ret = mmc_card_removed(card); + /* + * The card will be considered unchanged unless we have been asked to + * detect a change or host requires polling to provide card detection. + */ + if (!host->detect_change && !(host->caps & MMC_CAP_NEEDS_POLL) && + !(host->caps2 & MMC_CAP2_DETECT_ON_ERR)) + return ret; + + host->detect_change = 0; + if (!ret) { + ret = _mmc_detect_card_removed(host); + if (ret && (host->caps2 & MMC_CAP2_DETECT_ON_ERR)) { + /* + * Schedule a detect work as soon as possible to let a + * rescan handle the card removal. + */ + cancel_delayed_work(&host->detect); + mmc_detect_change(host, 0); + } + } + + return ret; +} +EXPORT_SYMBOL(mmc_detect_card_removed); + void mmc_rescan(struct work_struct *work) { static const unsigned freqs[] = { 400000, 300000, 200000, 100000 }; @@ -2069,6 +2020,8 @@ void mmc_rescan(struct work_struct *work) && !(host->caps & MMC_CAP_NONREMOVABLE)) host->bus_ops->detect(host); + host->detect_change = 0; + /* * Let mmc_bus_put() free the bus/bus_ops if we've found that * the card is no longer present. @@ -2120,8 +2073,6 @@ void mmc_stop_host(struct mmc_host *host) spin_unlock_irqrestore(&host->lock, flags); #endif - if (host->caps & MMC_CAP_DISABLE) - cancel_delayed_work(&host->disable); cancel_delayed_work_sync(&host->detect); mmc_flush_scheduled_work(); @@ -2130,6 +2081,7 @@ void mmc_stop_host(struct mmc_host *host) mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { + /* Calling bus_ops->remove() with a claimed host can deadlock */ if (host->bus_ops->remove) host->bus_ops->remove(host); @@ -2201,6 +2153,9 @@ int mmc_card_awake(struct mmc_host *host) { int err = -ENOSYS; + if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD) + return 0; + mmc_bus_get(host); if (host->bus_ops && !host->bus_dead && host->bus_ops->awake) @@ -2216,6 +2171,9 @@ int mmc_card_sleep(struct mmc_host *host) { int err = -ENOSYS; + if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD) + return 0; + mmc_bus_get(host); if (host->bus_ops && !host->bus_dead && host->bus_ops->sleep) @@ -2270,6 +2228,7 @@ EXPORT_SYMBOL(mmc_flush_cache); int mmc_cache_ctrl(struct mmc_host *host, u8 enable) { struct mmc_card *card = host->card; + unsigned int timeout; int err = 0; if (!(host->caps2 & MMC_CAP2_CACHE_CTRL) || @@ -2280,16 +2239,18 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) (card->ext_csd.cache_size > 0)) { enable = !!enable; - if (card->ext_csd.cache_ctrl ^ enable) + if (card->ext_csd.cache_ctrl ^ enable) { + timeout = enable ? card->ext_csd.generic_cmd6_time : 0; err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_CACHE_CTRL, enable, 0); - if (err) - pr_err("%s: cache %s error %d\n", - mmc_hostname(card->host), - enable ? "on" : "off", - err); - else - card->ext_csd.cache_ctrl = enable; + EXT_CSD_CACHE_CTRL, enable, timeout); + if (err) + pr_err("%s: cache %s error %d\n", + mmc_hostname(card->host), + enable ? "on" : "off", + err); + else + card->ext_csd.cache_ctrl = enable; + } } return err; @@ -2306,11 +2267,15 @@ int mmc_suspend_host(struct mmc_host *host) { int err = 0; - if (host->caps & MMC_CAP_DISABLE) - cancel_delayed_work(&host->disable); cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); - err = mmc_cache_ctrl(host, 0); + if (mmc_try_claim_host(host)) { + err = mmc_cache_ctrl(host, 0); + mmc_release_host(host); + } else { + err = -EBUSY; + } + if (err) goto out; @@ -2325,20 +2290,16 @@ int mmc_suspend_host(struct mmc_host *host) */ if (mmc_try_claim_host(host)) { if (host->bus_ops->suspend) { - /* - * For eMMC 4.5 device send notify command - * before sleep, because in sleep state eMMC 4.5 - * devices respond to only RESET and AWAKE cmd - */ - mmc_poweroff_notify(host); err = host->bus_ops->suspend(host); } - mmc_do_release_host(host); + mmc_release_host(host); if (err == -ENOSYS || !host->bus_ops->resume) { /* * We simply "remove" the card in this case. - * It will be redetected on resume. + * It will be redetected on resume. (Calling + * bus_ops->remove() with a claimed host can + * deadlock.) */ if (host->bus_ops->remove) host->bus_ops->remove(host); @@ -2431,11 +2392,11 @@ int mmc_pm_notify(struct notifier_block *notify_block, if (!host->bus_ops || host->bus_ops->suspend) break; - mmc_claim_host(host); - + /* Calling bus_ops->remove() with a claimed host can deadlock */ if (host->bus_ops->remove) host->bus_ops->remove(host); + mmc_claim_host(host); mmc_detach_bus(host); mmc_power_off(host); mmc_release_host(host); diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h index 14664f1fb16f..3bdafbca354f 100644 --- a/drivers/mmc/core/core.h +++ b/drivers/mmc/core/core.h @@ -24,6 +24,7 @@ struct mmc_bus_ops { int (*resume)(struct mmc_host *); int (*power_save)(struct mmc_host *); int (*power_restore)(struct mmc_host *); + int (*alive)(struct mmc_host *); }; void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops); @@ -59,12 +60,14 @@ void mmc_rescan(struct work_struct *work); void mmc_start_host(struct mmc_host *host); void mmc_stop_host(struct mmc_host *host); +int _mmc_detect_card_removed(struct mmc_host *host); + int mmc_attach_mmc(struct mmc_host *host); int mmc_attach_sd(struct mmc_host *host); int mmc_attach_sdio(struct mmc_host *host); /* Module parameters */ -extern int use_spi_crc; +extern bool use_spi_crc; /* Debugfs information for hosts and cards */ void mmc_add_host_debugfs(struct mmc_host *host); diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 3923880118b6..9ab5b17d488a 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -57,6 +57,8 @@ static int mmc_ios_show(struct seq_file *s, void *data) const char *str; seq_printf(s, "clock:\t\t%u Hz\n", ios->clock); + if (host->actual_clock) + seq_printf(s, "actual clock:\t%u Hz\n", host->actual_clock); seq_printf(s, "vdd:\t\t%u ", ios->vdd); if ((1 << ios->vdd) & MMC_VDD_165_195) seq_printf(s, "(1.65 - 1.95 V)\n"); @@ -133,6 +135,9 @@ static int mmc_ios_show(struct seq_file *s, void *data) case MMC_TIMING_UHS_DDR50: str = "sd uhs DDR50"; break; + case MMC_TIMING_MMC_HS200: + str = "mmc high-speed SDR200"; + break; default: str = "invalid"; break; diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index d31c78b72b0f..91c84c7a1829 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -54,6 +54,27 @@ static DEFINE_IDR(mmc_host_idr); static DEFINE_SPINLOCK(mmc_host_lock); #ifdef CONFIG_MMC_CLKGATE +static ssize_t clkgate_delay_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct mmc_host *host = cls_dev_to_mmc_host(dev); + return snprintf(buf, PAGE_SIZE, "%lu\n", host->clkgate_delay); +} + +static ssize_t clkgate_delay_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct mmc_host *host = cls_dev_to_mmc_host(dev); + unsigned long flags, value; + + if (kstrtoul(buf, 0, &value)) + return -EINVAL; + + spin_lock_irqsave(&host->clk_lock, flags); + host->clkgate_delay = value; + spin_unlock_irqrestore(&host->clk_lock, flags); + return count; +} /* * Enabling clock gating will make the core call out to the host @@ -114,7 +135,7 @@ static void mmc_host_clk_gate_delayed(struct mmc_host *host) static void mmc_host_clk_gate_work(struct work_struct *work) { struct mmc_host *host = container_of(work, struct mmc_host, - clk_gate_work); + clk_gate_work.work); mmc_host_clk_gate_delayed(host); } @@ -131,6 +152,8 @@ void mmc_host_clk_hold(struct mmc_host *host) { unsigned long flags; + /* cancel any clock gating work scheduled by mmc_host_clk_release() */ + cancel_delayed_work_sync(&host->clk_gate_work); mutex_lock(&host->clk_gate_mutex); spin_lock_irqsave(&host->clk_lock, flags); if (host->clk_gated) { @@ -180,7 +203,8 @@ void mmc_host_clk_release(struct mmc_host *host) host->clk_requests--; if (mmc_host_may_gate_card(host->card) && !host->clk_requests) - queue_work(system_nrt_wq, &host->clk_gate_work); + queue_delayed_work(system_nrt_wq, &host->clk_gate_work, + msecs_to_jiffies(host->clkgate_delay)); spin_unlock_irqrestore(&host->clk_lock, flags); } @@ -213,8 +237,13 @@ static inline void mmc_host_clk_init(struct mmc_host *host) host->clk_requests = 0; /* Hold MCI clock for 8 cycles by default */ host->clk_delay = 8; + /* + * Default clock gating delay is 0ms to avoid wasting power. + * This value can be tuned by writing into sysfs entry. + */ + host->clkgate_delay = 0; host->clk_gated = false; - INIT_WORK(&host->clk_gate_work, mmc_host_clk_gate_work); + INIT_DELAYED_WORK(&host->clk_gate_work, mmc_host_clk_gate_work); spin_lock_init(&host->clk_lock); mutex_init(&host->clk_gate_mutex); } @@ -229,7 +258,7 @@ static inline void mmc_host_clk_exit(struct mmc_host *host) * Wait for any outstanding gate and then make sure we're * ungated before exiting. */ - if (cancel_work_sync(&host->clk_gate_work)) + if (cancel_delayed_work_sync(&host->clk_gate_work)) mmc_host_clk_gate_delayed(host); if (host->clk_gated) mmc_host_clk_hold(host); @@ -237,6 +266,17 @@ static inline void mmc_host_clk_exit(struct mmc_host *host) WARN_ON(host->clk_requests > 1); } +static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) +{ + host->clkgate_delay_attr.show = clkgate_delay_show; + host->clkgate_delay_attr.store = clkgate_delay_store; + sysfs_attr_init(&host->clkgate_delay_attr.attr); + host->clkgate_delay_attr.attr.name = "clkgate_delay"; + host->clkgate_delay_attr.attr.mode = S_IRUGO | S_IWUSR; + if (device_create_file(&host->class_dev, &host->clkgate_delay_attr)) + pr_err("%s: Failed to create clkgate_delay sysfs entry\n", + mmc_hostname(host)); +} #else static inline void mmc_host_clk_init(struct mmc_host *host) @@ -247,6 +287,10 @@ static inline void mmc_host_clk_exit(struct mmc_host *host) { } +static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) +{ +} + #endif /** @@ -286,7 +330,6 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) spin_lock_init(&host->lock); init_waitqueue_head(&host->wq); INIT_DELAYED_WORK(&host->detect, mmc_rescan); - INIT_DELAYED_WORK_DEFERRABLE(&host->disable, mmc_host_deeper_disable); #ifdef CONFIG_PM host->pm_notify.notifier_call = mmc_pm_notify; #endif @@ -335,6 +378,7 @@ int mmc_add_host(struct mmc_host *host) #ifdef CONFIG_DEBUG_FS mmc_add_host_debugfs(host); #endif + mmc_host_clk_sysfs_init(host); mmc_start_host(host); register_pm_notifier(&host->pm_notify); diff --git a/drivers/mmc/core/host.h b/drivers/mmc/core/host.h index fb8a5cd2e4a1..f2ab9e578126 100644 --- a/drivers/mmc/core/host.h +++ b/drivers/mmc/core/host.h @@ -15,27 +15,5 @@ int mmc_register_host_class(void); void mmc_unregister_host_class(void); -#ifdef CONFIG_MMC_CLKGATE -void mmc_host_clk_hold(struct mmc_host *host); -void mmc_host_clk_release(struct mmc_host *host); -unsigned int mmc_host_clk_rate(struct mmc_host *host); - -#else -static inline void mmc_host_clk_hold(struct mmc_host *host) -{ -} - -static inline void mmc_host_clk_release(struct mmc_host *host) -{ -} - -static inline unsigned int mmc_host_clk_rate(struct mmc_host *host) -{ - return host->ios.clock; -} -#endif - -void mmc_host_deeper_disable(struct work_struct *work); - #endif diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index d240427c1246..54df5adc0413 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -286,6 +286,27 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) } card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { + case EXT_CSD_CARD_TYPE_SDR_ALL: + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_8V: + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_2V: + case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_52: + card->ext_csd.hs_max_dtr = 200000000; + card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_200; + break; + case EXT_CSD_CARD_TYPE_SDR_1_2V_ALL: + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_8V: + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_2V: + case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_52: + card->ext_csd.hs_max_dtr = 200000000; + card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_2V; + break; + case EXT_CSD_CARD_TYPE_SDR_1_8V_ALL: + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_8V: + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_2V: + case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_52: + card->ext_csd.hs_max_dtr = 200000000; + card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_8V; + break; case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: card->ext_csd.hs_max_dtr = 52000000; @@ -348,13 +369,14 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; mmc_part_add(card, part_size, EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, - "boot%d", idx, true); + "boot%d", idx, true, + MMC_BLK_DATA_AREA_BOOT); } } } card->ext_csd.raw_hc_erase_gap_size = - ext_csd[EXT_CSD_PARTITION_ATTRIBUTE]; + ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; card->ext_csd.raw_sec_trim_mult = ext_csd[EXT_CSD_SEC_TRIM_MULT]; card->ext_csd.raw_sec_erase_mult = @@ -435,7 +457,8 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) hc_wp_grp_sz); mmc_part_add(card, part_size << 19, EXT_CSD_PART_CONFIG_ACC_GP0 + idx, - "gp%d", idx, false); + "gp%d", idx, false, + MMC_BLK_DATA_AREA_GP); } } card->ext_csd.sec_trim_mult = @@ -446,6 +469,14 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; card->ext_csd.trim_timeout = 300 * ext_csd[EXT_CSD_TRIM_MULT]; + + /* + * Note that the call to mmc_part_add above defaults to read + * only. If this default assumption is changed, the call must + * take into account the value of boot_locked below. + */ + card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; + card->ext_csd.boot_ro_lockable = true; } if (card->ext_csd.rev >= 5) { @@ -488,6 +519,20 @@ static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; + + if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) + card->ext_csd.data_sector_size = 4096; + else + card->ext_csd.data_sector_size = 512; + + if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && + (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { + card->ext_csd.data_tag_unit_size = + ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * + (card->ext_csd.data_sector_size); + } else { + card->ext_csd.data_tag_unit_size = 0; + } } out: @@ -520,7 +565,7 @@ static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) goto out; /* only compare read only fields */ - err = (!(card->ext_csd.raw_partition_support == + err = !((card->ext_csd.raw_partition_support == bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && (card->ext_csd.raw_erased_mem_count == bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && @@ -650,6 +695,11 @@ static int mmc_select_powerclass(struct mmc_card *card, else if (host->ios.clock <= 200000000) index = EXT_CSD_PWR_CL_200_195; break; + case MMC_VDD_27_28: + case MMC_VDD_28_29: + case MMC_VDD_29_30: + case MMC_VDD_30_31: + case MMC_VDD_31_32: case MMC_VDD_32_33: case MMC_VDD_33_34: case MMC_VDD_34_35: @@ -690,6 +740,79 @@ static int mmc_select_powerclass(struct mmc_card *card, } /* + * Selects the desired buswidth and switch to the HS200 mode + * if bus width set without error + */ +static int mmc_select_hs200(struct mmc_card *card) +{ + int idx, err = 0; + struct mmc_host *host; + static unsigned ext_csd_bits[] = { + EXT_CSD_BUS_WIDTH_4, + EXT_CSD_BUS_WIDTH_8, + }; + static unsigned bus_widths[] = { + MMC_BUS_WIDTH_4, + MMC_BUS_WIDTH_8, + }; + + BUG_ON(!card); + + host = card->host; + + if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && + host->caps2 & MMC_CAP2_HS200_1_2V_SDR) + if (mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0)) + err = mmc_set_signal_voltage(host, + MMC_SIGNAL_VOLTAGE_180, 0); + + /* If fails try again during next card power cycle */ + if (err) + goto err; + + idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; + + /* + * Unlike SD, MMC cards dont have a configuration register to notify + * supported bus width. So bus test command should be run to identify + * the supported bus width or compare the ext csd values of current + * bus width and ext csd values of 1 bit mode read earlier. + */ + for (; idx >= 0; idx--) { + + /* + * Host is capable of 8bit transfer, then switch + * the device to work in 8bit transfer mode. If the + * mmc switch command returns error then switch to + * 4bit transfer mode. On success set the corresponding + * bus width on the host. + */ + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_BUS_WIDTH, + ext_csd_bits[idx], + card->ext_csd.generic_cmd6_time); + if (err) + continue; + + mmc_set_bus_width(card->host, bus_widths[idx]); + + if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) + err = mmc_compare_ext_csds(card, bus_widths[idx]); + else + err = mmc_bus_test(card, bus_widths[idx]); + if (!err) + break; + } + + /* switch to HS200 mode if bus width set successfully */ + if (!err) + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_HS_TIMING, 2, 0); +err: + return err; +} + +/* * Handle the detection and initialisation of a card. * * In the case of a resume, "oldcard" will contain the card @@ -712,6 +835,9 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, if (!mmc_host_is_spi(host)) mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); + /* Initialization should be done at 3.3 V I/O voltage. */ + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + /* * Since we're changing the OCR value, we seem to * need to tell some cards to go back to the idle @@ -831,7 +957,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF * bit. This bit will be lost every time after a reset or power off. */ - if (card->ext_csd.enhanced_area_en) { + if (card->ext_csd.enhanced_area_en || + (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_ERASE_GROUP_DEF, 1, card->ext_csd.generic_cmd6_time); @@ -895,11 +1022,16 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, /* * Activate high speed (if supported) */ - if ((card->ext_csd.hs_max_dtr != 0) && - (host->caps & MMC_CAP_MMC_HIGHSPEED)) { - err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_HS_TIMING, 1, - card->ext_csd.generic_cmd6_time); + if (card->ext_csd.hs_max_dtr != 0) { + err = 0; + if (card->ext_csd.hs_max_dtr > 52000000 && + host->caps2 & MMC_CAP2_HS200) + err = mmc_select_hs200(card); + else if (host->caps & MMC_CAP_MMC_HIGHSPEED) + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_HS_TIMING, 1, + card->ext_csd.generic_cmd6_time); + if (err && err != -EBADMSG) goto free_card; @@ -908,33 +1040,24 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, mmc_hostname(card->host)); err = 0; } else { - mmc_card_set_highspeed(card); - mmc_set_timing(card->host, MMC_TIMING_MMC_HS); + if (card->ext_csd.hs_max_dtr > 52000000 && + host->caps2 & MMC_CAP2_HS200) { + mmc_card_set_hs200(card); + mmc_set_timing(card->host, + MMC_TIMING_MMC_HS200); + } else { + mmc_card_set_highspeed(card); + mmc_set_timing(card->host, MMC_TIMING_MMC_HS); + } } } /* - * Enable HPI feature (if supported) - */ - if (card->ext_csd.hpi) { - err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_HPI_MGMT, 1, 0); - if (err && err != -EBADMSG) - goto free_card; - if (err) { - pr_warning("%s: Enabling HPI failed\n", - mmc_hostname(card->host)); - err = 0; - } else - card->ext_csd.hpi_en = 1; - } - - /* * Compute bus speed. */ max_dtr = (unsigned int)-1; - if (mmc_card_highspeed(card)) { + if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { if (max_dtr > card->ext_csd.hs_max_dtr) max_dtr = card->ext_csd.hs_max_dtr; } else if (max_dtr > card->csd.max_dtr) { @@ -960,9 +1083,50 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * Indicate HS200 SDR mode (if supported). + */ + if (mmc_card_hs200(card)) { + u32 ext_csd_bits; + u32 bus_width = card->host->ios.bus_width; + + /* + * For devices supporting HS200 mode, the bus width has + * to be set before executing the tuning function. If + * set before tuning, then device will respond with CRC + * errors for responses on CMD line. So for HS200 the + * sequence will be + * 1. set bus width 4bit / 8 bit (1 bit not supported) + * 2. switch to HS200 mode + * 3. set the clock to > 52Mhz <=200MHz and + * 4. execute tuning for HS200 + */ + if ((host->caps2 & MMC_CAP2_HS200) && + card->host->ops->execute_tuning) { + mmc_host_clk_hold(card->host); + err = card->host->ops->execute_tuning(card->host, + MMC_SEND_TUNING_BLOCK_HS200); + mmc_host_clk_release(card->host); + } + if (err) { + pr_warning("%s: tuning execution failed\n", + mmc_hostname(card->host)); + goto err; + } + + ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? + EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; + err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); + if (err) + pr_warning("%s: power class selection to bus width %d" + " failed\n", mmc_hostname(card->host), + 1 << bus_width); + } + + /* * Activate wide bus and DDR (if supported). */ - if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && + if (!mmc_card_hs200(card) && + (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { static unsigned ext_csd_bits[][2] = { { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, @@ -987,10 +1151,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, err = mmc_select_powerclass(card, ext_csd_bits[idx][0], ext_csd); if (err) - pr_err("%s: power class selection to " - "bus width %d failed\n", - mmc_hostname(card->host), - 1 << bus_width); + pr_warning("%s: power class selection to " + "bus width %d failed\n", + mmc_hostname(card->host), + 1 << bus_width); err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, @@ -1018,10 +1182,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, err = mmc_select_powerclass(card, ext_csd_bits[idx][1], ext_csd); if (err) - pr_err("%s: power class selection to " - "bus width %d ddr %d failed\n", - mmc_hostname(card->host), - 1 << bus_width, ddr); + pr_warning("%s: power class selection to " + "bus width %d ddr %d failed\n", + mmc_hostname(card->host), + 1 << bus_width, ddr); err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, @@ -1048,7 +1212,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * * WARNING: eMMC rules are NOT the same as SD DDR */ - if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) { + if (ddr == MMC_1_2V_DDR_MODE) { err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); if (err) @@ -1061,20 +1225,46 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, } /* + * Enable HPI feature (if supported) + */ + if (card->ext_csd.hpi) { + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_HPI_MGMT, 1, + card->ext_csd.generic_cmd6_time); + if (err && err != -EBADMSG) + goto free_card; + if (err) { + pr_warning("%s: Enabling HPI failed\n", + mmc_hostname(card->host)); + err = 0; + } else + card->ext_csd.hpi_en = 1; + } + + /* * If cache size is higher than 0, this indicates * the existence of cache and it can be turned on. */ if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && card->ext_csd.cache_size > 0) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_CACHE_CTRL, 1, 0); + EXT_CSD_CACHE_CTRL, 1, + card->ext_csd.generic_cmd6_time); if (err && err != -EBADMSG) goto free_card; /* * Only if no error, cache is turned on successfully. */ - card->ext_csd.cache_ctrl = err ? 0 : 1; + if (err) { + pr_warning("%s: Cache is supported, " + "but failed to turn on (%d)\n", + mmc_hostname(card->host), err); + card->ext_csd.cache_ctrl = 0; + err = 0; + } else { + card->ext_csd.cache_ctrl = 1; + } } if (!oldcard) @@ -1105,6 +1295,14 @@ static void mmc_remove(struct mmc_host *host) } /* + * Card detection - card is alive. + */ +static int mmc_alive(struct mmc_host *host) +{ + return mmc_send_status(host->card, NULL); +} + +/* * Card detection callback from host. */ static void mmc_detect(struct mmc_host *host) @@ -1119,7 +1317,7 @@ static void mmc_detect(struct mmc_host *host) /* * Just check if our card has been removed. */ - err = mmc_send_status(host->card, NULL); + err = _mmc_detect_card_removed(host); mmc_release_host(host); @@ -1144,11 +1342,13 @@ static int mmc_suspend(struct mmc_host *host) BUG_ON(!host->card); mmc_claim_host(host); - if (mmc_card_can_sleep(host)) + if (mmc_card_can_sleep(host)) { err = mmc_card_sleep(host); - else if (!mmc_host_is_spi(host)) + if (!err) + mmc_card_set_sleep(host->card); + } else if (!mmc_host_is_spi(host)) mmc_deselect_cards(host); - host->card->state &= ~MMC_STATE_HIGHSPEED; + host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); mmc_release_host(host); return err; @@ -1168,7 +1368,11 @@ static int mmc_resume(struct mmc_host *host) BUG_ON(!host->card); mmc_claim_host(host); - err = mmc_init_card(host, host->ocr, host->card); + if (mmc_card_is_sleep(host->card)) { + err = mmc_card_awake(host); + mmc_card_clr_sleep(host->card); + } else + err = mmc_init_card(host, host->ocr, host->card); mmc_release_host(host); return err; @@ -1178,7 +1382,8 @@ static int mmc_power_restore(struct mmc_host *host) { int ret; - host->card->state &= ~MMC_STATE_HIGHSPEED; + host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); + mmc_card_clr_sleep(host->card); mmc_claim_host(host); ret = mmc_init_card(host, host->ocr, host->card); mmc_release_host(host); @@ -1224,6 +1429,7 @@ static const struct mmc_bus_ops mmc_ops = { .suspend = NULL, .resume = NULL, .power_restore = mmc_power_restore, + .alive = mmc_alive, }; static const struct mmc_bus_ops mmc_ops_unsafe = { @@ -1234,6 +1440,7 @@ static const struct mmc_bus_ops mmc_ops_unsafe = { .suspend = mmc_suspend, .resume = mmc_resume, .power_restore = mmc_power_restore, + .alive = mmc_alive, }; static void mmc_attach_bus_ops(struct mmc_host *host) diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 4d41fa984c93..69370f494e05 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -553,18 +553,22 @@ int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status) { struct mmc_command cmd = {0}; unsigned int opcode; - unsigned int flags; int err; + if (!card->ext_csd.hpi) { + pr_warning("%s: Card didn't support HPI command\n", + mmc_hostname(card->host)); + return -EINVAL; + } + opcode = card->ext_csd.hpi_cmd; if (opcode == MMC_STOP_TRANSMISSION) - flags = MMC_RSP_R1 | MMC_CMD_AC; + cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; else if (opcode == MMC_SEND_STATUS) - flags = MMC_RSP_R1 | MMC_CMD_AC; + cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; cmd.opcode = opcode; cmd.arg = card->rca << 16 | 1; - cmd.flags = flags; cmd.cmd_timeout_ms = card->ext_csd.out_of_int_time; err = mmc_wait_for_cmd(card->host, &cmd, 0); diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index f2a05ea40f2a..c272c6868ecf 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -307,8 +307,8 @@ static int mmc_read_switch(struct mmc_card *card) goto out; } - if (status[13] & UHS_SDR50_BUS_SPEED) - card->sw_caps.hs_max_dtr = 50000000; + if (status[13] & SD_MODE_HIGH_SPEED) + card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; if (card->scr.sda_spec3) { card->sw_caps.sd3_bus_mode = status[13]; @@ -451,9 +451,11 @@ static int sd_select_driver_type(struct mmc_card *card, u8 *status) * information and let the hardware specific code * return what is possible given the options */ + mmc_host_clk_hold(card->host); drive_strength = card->host->ops->select_drive_strength( card->sw_caps.uhs_max_dtr, host_drv_type, card_drv_type); + mmc_host_clk_release(card->host); err = mmc_sd_switch(card, 1, 2, drive_strength, status); if (err) @@ -660,8 +662,12 @@ static int mmc_sd_init_uhs_card(struct mmc_card *card) goto out; /* SPI mode doesn't define CMD19 */ - if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) - err = card->host->ops->execute_tuning(card->host); + if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) { + mmc_host_clk_hold(card->host); + err = card->host->ops->execute_tuning(card->host, + MMC_SEND_TUNING_BLOCK); + mmc_host_clk_release(card->host); + } out: kfree(status); @@ -849,8 +855,11 @@ int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, if (!reinit) { int ro = -1; - if (host->ops->get_ro) + if (host->ops->get_ro) { + mmc_host_clk_hold(card->host); ro = host->ops->get_ro(host); + mmc_host_clk_release(card->host); + } if (ro < 0) { pr_warning("%s: host does not " @@ -902,6 +911,9 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, BUG_ON(!host); WARN_ON(!host->claimed); + /* The initialization should be done at 3.3 V I/O voltage. */ + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + err = mmc_sd_get_cid(host, ocr, cid, &rocr); if (err) return err; @@ -960,14 +972,17 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, goto free_card; /* Card is an ultra-high-speed card */ - mmc_sd_card_set_uhs(card); + mmc_card_set_uhs(card); /* * Since initialization is now complete, enable preset * value registers for UHS-I cards. */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(card->host); host->ops->enable_preset_value(host, true); + mmc_host_clk_release(card->host); + } } else { /* * Attempt to change to high-speed (if supported) @@ -1019,6 +1034,14 @@ static void mmc_sd_remove(struct mmc_host *host) } /* + * Card detection - card is alive. + */ +static int mmc_sd_alive(struct mmc_host *host) +{ + return mmc_send_status(host->card, NULL); +} + +/* * Card detection callback from host. */ static void mmc_sd_detect(struct mmc_host *host) @@ -1033,7 +1056,7 @@ static void mmc_sd_detect(struct mmc_host *host) /* * Just check if our card has been removed. */ - err = mmc_send_status(host->card, NULL); + err = _mmc_detect_card_removed(host); mmc_release_host(host); @@ -1102,6 +1125,7 @@ static const struct mmc_bus_ops mmc_sd_ops = { .suspend = NULL, .resume = NULL, .power_restore = mmc_sd_power_restore, + .alive = mmc_sd_alive, }; static const struct mmc_bus_ops mmc_sd_ops_unsafe = { @@ -1110,6 +1134,7 @@ static const struct mmc_bus_ops mmc_sd_ops_unsafe = { .suspend = mmc_sd_suspend, .resume = mmc_sd_resume, .power_restore = mmc_sd_power_restore, + .alive = mmc_sd_alive, }; static void mmc_sd_attach_bus_ops(struct mmc_host *host) @@ -1134,14 +1159,12 @@ int mmc_attach_sd(struct mmc_host *host) BUG_ON(!host); WARN_ON(!host->claimed); - /* Make sure we are at 3.3V signalling voltage */ - err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, false); - if (err) - return err; - /* Disable preset value enable if already set since last time */ - if (host->ops->enable_preset_value) + if (host->ops->enable_preset_value) { + mmc_host_clk_hold(host); host->ops->enable_preset_value(host, false); + mmc_host_clk_release(host); + } err = mmc_send_app_op_cond(host, 0, &ocr); if (err) diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 3ab565e32a6a..2c7c83f832d2 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -14,6 +14,7 @@ #include <linux/mmc/host.h> #include <linux/mmc/card.h> +#include <linux/mmc/mmc.h> #include <linux/mmc/sdio.h> #include <linux/mmc/sdio_func.h> #include <linux/mmc/sdio_ids.h> @@ -97,11 +98,13 @@ fail: return ret; } -static int sdio_read_cccr(struct mmc_card *card) +static int sdio_read_cccr(struct mmc_card *card, u32 ocr) { int ret; int cccr_vsn; + int uhs = ocr & R4_18V_PRESENT; unsigned char data; + unsigned char speed; memset(&card->cccr, 0, sizeof(struct sdio_cccr)); @@ -140,12 +143,60 @@ static int sdio_read_cccr(struct mmc_card *card) } if (cccr_vsn >= SDIO_CCCR_REV_1_20) { - ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &data); + ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); if (ret) goto out; - if (data & SDIO_SPEED_SHS) - card->cccr.high_speed = 1; + card->scr.sda_spec3 = 0; + card->sw_caps.sd3_bus_mode = 0; + card->sw_caps.sd3_drv_type = 0; + if (cccr_vsn >= SDIO_CCCR_REV_3_00 && uhs) { + card->scr.sda_spec3 = 1; + ret = mmc_io_rw_direct(card, 0, 0, + SDIO_CCCR_UHS, 0, &data); + if (ret) + goto out; + + if (card->host->caps & + (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_DDR50)) { + if (data & SDIO_UHS_DDR50) + card->sw_caps.sd3_bus_mode + |= SD_MODE_UHS_DDR50; + + if (data & SDIO_UHS_SDR50) + card->sw_caps.sd3_bus_mode + |= SD_MODE_UHS_SDR50; + + if (data & SDIO_UHS_SDR104) + card->sw_caps.sd3_bus_mode + |= SD_MODE_UHS_SDR104; + } + + ret = mmc_io_rw_direct(card, 0, 0, + SDIO_CCCR_DRIVE_STRENGTH, 0, &data); + if (ret) + goto out; + + if (data & SDIO_DRIVE_SDTA) + card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_A; + if (data & SDIO_DRIVE_SDTC) + card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_C; + if (data & SDIO_DRIVE_SDTD) + card->sw_caps.sd3_drv_type |= SD_DRIVER_TYPE_D; + } + + /* if no uhs mode ensure we check for high speed */ + if (!card->sw_caps.sd3_bus_mode) { + if (speed & SDIO_SPEED_SHS) { + card->cccr.high_speed = 1; + card->sw_caps.hs_max_dtr = 50000000; + } else { + card->cccr.high_speed = 0; + card->sw_caps.hs_max_dtr = 25000000; + } + } } out: @@ -327,6 +378,194 @@ static unsigned mmc_sdio_get_max_clock(struct mmc_card *card) return max_dtr; } +static unsigned char host_drive_to_sdio_drive(int host_strength) +{ + switch (host_strength) { + case MMC_SET_DRIVER_TYPE_A: + return SDIO_DTSx_SET_TYPE_A; + case MMC_SET_DRIVER_TYPE_B: + return SDIO_DTSx_SET_TYPE_B; + case MMC_SET_DRIVER_TYPE_C: + return SDIO_DTSx_SET_TYPE_C; + case MMC_SET_DRIVER_TYPE_D: + return SDIO_DTSx_SET_TYPE_D; + default: + return SDIO_DTSx_SET_TYPE_B; + } +} + +static void sdio_select_driver_type(struct mmc_card *card) +{ + int host_drv_type = SD_DRIVER_TYPE_B; + int card_drv_type = SD_DRIVER_TYPE_B; + int drive_strength; + unsigned char card_strength; + int err; + + /* + * If the host doesn't support any of the Driver Types A,C or D, + * or there is no board specific handler then default Driver + * Type B is used. + */ + if (!(card->host->caps & + (MMC_CAP_DRIVER_TYPE_A | + MMC_CAP_DRIVER_TYPE_C | + MMC_CAP_DRIVER_TYPE_D))) + return; + + if (!card->host->ops->select_drive_strength) + return; + + if (card->host->caps & MMC_CAP_DRIVER_TYPE_A) + host_drv_type |= SD_DRIVER_TYPE_A; + + if (card->host->caps & MMC_CAP_DRIVER_TYPE_C) + host_drv_type |= SD_DRIVER_TYPE_C; + + if (card->host->caps & MMC_CAP_DRIVER_TYPE_D) + host_drv_type |= SD_DRIVER_TYPE_D; + + if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_A) + card_drv_type |= SD_DRIVER_TYPE_A; + + if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_C) + card_drv_type |= SD_DRIVER_TYPE_C; + + if (card->sw_caps.sd3_drv_type & SD_DRIVER_TYPE_D) + card_drv_type |= SD_DRIVER_TYPE_D; + + /* + * The drive strength that the hardware can support + * depends on the board design. Pass the appropriate + * information and let the hardware specific code + * return what is possible given the options + */ + drive_strength = card->host->ops->select_drive_strength( + card->sw_caps.uhs_max_dtr, + host_drv_type, card_drv_type); + + /* if error just use default for drive strength B */ + err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_DRIVE_STRENGTH, 0, + &card_strength); + if (err) + return; + + card_strength &= ~(SDIO_DRIVE_DTSx_MASK<<SDIO_DRIVE_DTSx_SHIFT); + card_strength |= host_drive_to_sdio_drive(drive_strength); + + err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_DRIVE_STRENGTH, + card_strength, NULL); + + /* if error default to drive strength B */ + if (!err) + mmc_set_driver_type(card->host, drive_strength); +} + + +static int sdio_set_bus_speed_mode(struct mmc_card *card) +{ + unsigned int bus_speed, timing; + int err; + unsigned char speed; + + /* + * If the host doesn't support any of the UHS-I modes, fallback on + * default speed. + */ + if (!(card->host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50))) + return 0; + + bus_speed = SDIO_SPEED_SDR12; + timing = MMC_TIMING_UHS_SDR12; + if ((card->host->caps & MMC_CAP_UHS_SDR104) && + (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { + bus_speed = SDIO_SPEED_SDR104; + timing = MMC_TIMING_UHS_SDR104; + card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; + } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && + (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { + bus_speed = SDIO_SPEED_DDR50; + timing = MMC_TIMING_UHS_DDR50; + card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; + } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & + SD_MODE_UHS_SDR50)) { + bus_speed = SDIO_SPEED_SDR50; + timing = MMC_TIMING_UHS_SDR50; + card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; + } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && + (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { + bus_speed = SDIO_SPEED_SDR25; + timing = MMC_TIMING_UHS_SDR25; + card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; + } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & + SD_MODE_UHS_SDR12)) { + bus_speed = SDIO_SPEED_SDR12; + timing = MMC_TIMING_UHS_SDR12; + card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; + } + + err = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_SPEED, 0, &speed); + if (err) + return err; + + speed &= ~SDIO_SPEED_BSS_MASK; + speed |= bus_speed; + err = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_SPEED, speed, NULL); + if (err) + return err; + + if (bus_speed) { + mmc_set_timing(card->host, timing); + mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); + } + + return 0; +} + +/* + * UHS-I specific initialization procedure + */ +static int mmc_sdio_init_uhs_card(struct mmc_card *card) +{ + int err; + + if (!card->scr.sda_spec3) + return 0; + + /* + * Switch to wider bus (if supported). + */ + if (card->host->caps & MMC_CAP_4_BIT_DATA) { + err = sdio_enable_4bit_bus(card); + if (err > 0) { + mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); + err = 0; + } + } + + /* Set the driver strength for the card */ + sdio_select_driver_type(card); + + /* Set bus speed mode of the card */ + err = sdio_set_bus_speed_mode(card); + if (err) + goto out; + + /* Initialize and start re-tuning timer */ + if (!mmc_host_is_spi(card->host) && card->host->ops->execute_tuning) + err = card->host->ops->execute_tuning(card->host, + MMC_SEND_TUNING_BLOCK); + +out: + + return err; +} + /* * Handle the detection and initialisation of a card. * @@ -346,6 +585,9 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, * Inform the card of the voltage */ if (!powered_resume) { + /* The initialization should be done at 3.3 V I/O voltage. */ + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + err = mmc_send_io_op_cond(host, host->ocr, &ocr); if (err) goto err; @@ -394,6 +636,30 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, host->ops->init_card(host, card); /* + * If the host and card support UHS-I mode request the card + * to switch to 1.8V signaling level. No 1.8v signalling if + * UHS mode is not enabled to maintain compatibilty and some + * systems that claim 1.8v signalling in fact do not support + * it. + */ + if ((ocr & R4_18V_PRESENT) && + (host->caps & + (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | + MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | + MMC_CAP_UHS_DDR50))) { + err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, + true); + if (err) { + ocr &= ~R4_18V_PRESENT; + host->ocr &= ~R4_18V_PRESENT; + } + err = 0; + } else { + ocr &= ~R4_18V_PRESENT; + host->ocr &= ~R4_18V_PRESENT; + } + + /* * For native busses: set card RCA and quit open drain mode. */ if (!powered_resume && !mmc_host_is_spi(host)) { @@ -450,7 +716,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, /* * Read the common registers. */ - err = sdio_read_cccr(card); + err = sdio_read_cccr(card, ocr); if (err) goto remove; @@ -492,29 +758,39 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, if (err) goto remove; - /* - * Switch to high-speed (if supported). - */ - err = sdio_enable_hs(card); - if (err > 0) - mmc_sd_go_highspeed(card); - else if (err) - goto remove; + /* Initialization sequence for UHS-I cards */ + /* Only if card supports 1.8v and UHS signaling */ + if ((ocr & R4_18V_PRESENT) && card->sw_caps.sd3_bus_mode) { + err = mmc_sdio_init_uhs_card(card); + if (err) + goto remove; - /* - * Change to the card's maximum speed. - */ - mmc_set_clock(host, mmc_sdio_get_max_clock(card)); + /* Card is an ultra-high-speed card */ + mmc_card_set_uhs(card); + } else { + /* + * Switch to high-speed (if supported). + */ + err = sdio_enable_hs(card); + if (err > 0) + mmc_sd_go_highspeed(card); + else if (err) + goto remove; - /* - * Switch to wider bus (if supported). - */ - err = sdio_enable_4bit_bus(card); - if (err > 0) - mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); - else if (err) - goto remove; + /* + * Change to the card's maximum speed. + */ + mmc_set_clock(host, mmc_sdio_get_max_clock(card)); + /* + * Switch to wider bus (if supported). + */ + err = sdio_enable_4bit_bus(card); + if (err > 0) + mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); + else if (err) + goto remove; + } finish: if (!oldcard) host->card = card; @@ -550,6 +826,14 @@ static void mmc_sdio_remove(struct mmc_host *host) } /* + * Card detection - card is alive. + */ +static int mmc_sdio_alive(struct mmc_host *host) +{ + return mmc_select_card(host->card); +} + +/* * Card detection callback from host. */ static void mmc_sdio_detect(struct mmc_host *host) @@ -571,7 +855,7 @@ static void mmc_sdio_detect(struct mmc_host *host) /* * Just check if our card has been removed. */ - err = mmc_select_card(host->card); + err = _mmc_detect_card_removed(host); mmc_release_host(host); @@ -715,6 +999,11 @@ static int mmc_sdio_power_restore(struct mmc_host *host) * With these steps taken, mmc_select_voltage() is also required to * restore the correct voltage setting of the card. */ + + /* The initialization should be done at 3.3 V I/O voltage. */ + if (!mmc_card_keep_power(host)) + mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); + sdio_reset(host); mmc_go_idle(host); mmc_send_if_cond(host, host->ocr_avail); @@ -749,6 +1038,7 @@ static const struct mmc_bus_ops mmc_sdio_ops = { .suspend = mmc_sdio_suspend, .resume = mmc_sdio_resume, .power_restore = mmc_sdio_power_restore, + .alive = mmc_sdio_alive, }; @@ -797,8 +1087,17 @@ int mmc_attach_sdio(struct mmc_host *host) * Detect and init the card. */ err = mmc_sdio_init_card(host, host->ocr, NULL, 0); - if (err) - goto err; + if (err) { + if (err == -EAGAIN) { + /* + * Retry initialization with S18R set to 0. + */ + host->ocr &= ~R4_18V_PRESENT; + err = mmc_sdio_init_card(host, host->ocr, NULL, 0); + } + if (err) + goto err; + } card = host->card; /* diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 40989e6bb53a..236842ec955a 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -192,9 +192,15 @@ static int sdio_bus_remove(struct device *dev) return ret; } -#ifdef CONFIG_PM_RUNTIME +#ifdef CONFIG_PM + +static int pm_no_operation(struct device *dev) +{ + return 0; +} static const struct dev_pm_ops sdio_bus_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_no_operation, pm_no_operation) SET_RUNTIME_PM_OPS( pm_generic_runtime_suspend, pm_generic_runtime_resume, @@ -204,11 +210,11 @@ static const struct dev_pm_ops sdio_bus_pm_ops = { #define SDIO_PM_OPS_PTR (&sdio_bus_pm_ops) -#else /* !CONFIG_PM_RUNTIME */ +#else /* !CONFIG_PM */ #define SDIO_PM_OPS_PTR NULL -#endif /* !CONFIG_PM_RUNTIME */ +#endif /* !CONFIG_PM */ static struct bus_type sdio_bus_type = { .name = "sdio", diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c index b1f3168f791b..8f6f5ac131fc 100644 --- a/drivers/mmc/core/sdio_io.c +++ b/drivers/mmc/core/sdio_io.c @@ -196,6 +196,9 @@ static inline unsigned int sdio_max_byte_size(struct sdio_func *func) else mval = min(mval, func->max_blksize); + if (mmc_card_broken_byte_mode_512(func->card)) + return min(mval, 511u); + return min(mval, 512u); /* maximum size for byte mode */ } @@ -314,7 +317,7 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write, func->card->host->max_seg_size / func->cur_blksize); max_blocks = min(max_blocks, 511u); - while (remainder > func->cur_blksize) { + while (remainder >= func->cur_blksize) { unsigned blocks; blocks = remainder / func->cur_blksize; @@ -339,8 +342,9 @@ static int sdio_io_rw_ext_helper(struct sdio_func *func, int write, while (remainder > 0) { size = min(remainder, sdio_max_byte_size(func)); + /* Indicate byte mode by setting "blocks" = 0 */ ret = mmc_io_rw_extended(func->card, write, func->num, addr, - incr_addr, buf, 1, size); + incr_addr, buf, 0, size); if (ret) return ret; diff --git a/drivers/mmc/core/sdio_irq.c b/drivers/mmc/core/sdio_irq.c index 68f81b9ee0fb..f573e7f9f740 100644 --- a/drivers/mmc/core/sdio_irq.c +++ b/drivers/mmc/core/sdio_irq.c @@ -146,15 +146,21 @@ static int sdio_irq_thread(void *_host) } set_current_state(TASK_INTERRUPTIBLE); - if (host->caps & MMC_CAP_SDIO_IRQ) + if (host->caps & MMC_CAP_SDIO_IRQ) { + mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 1); + mmc_host_clk_release(host); + } if (!kthread_should_stop()) schedule_timeout(period); set_current_state(TASK_RUNNING); } while (!kthread_should_stop()); - if (host->caps & MMC_CAP_SDIO_IRQ) + if (host->caps & MMC_CAP_SDIO_IRQ) { + mmc_host_clk_hold(host); host->ops->enable_sdio_irq(host, 0); + mmc_host_clk_release(host); + } pr_debug("%s: IRQ thread exiting with code %d\n", mmc_hostname(host), ret); diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index b0517cc06200..d29e20630eed 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -128,8 +128,6 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, BUG_ON(!card); BUG_ON(fn > 7); - BUG_ON(blocks == 1 && blksz > 512); - WARN_ON(blocks == 0); WARN_ON(blksz == 0); /* sanity check */ @@ -144,22 +142,20 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, cmd.arg |= fn << 28; cmd.arg |= incr_addr ? 0x04000000 : 0x00000000; cmd.arg |= addr << 9; - if (blocks == 1 && blksz < 512) - cmd.arg |= blksz; /* byte mode */ - else if (blocks == 1 && blksz == 512 && - !(mmc_card_broken_byte_mode_512(card))) - cmd.arg |= 0; /* byte mode, 0==512 */ + if (blocks == 0) + cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */ else cmd.arg |= 0x08000000 | blocks; /* block mode */ cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; data.blksz = blksz; - data.blocks = blocks; + /* Code in host drivers/fwk assumes that "blocks" always is >=1 */ + data.blocks = blocks ? blocks : 1; data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; data.sg = &sg; data.sg_len = 1; - sg_init_one(&sg, buf, blksz * blocks); + sg_init_one(&sg, buf, data.blksz * data.blocks); mmc_set_data_timeout(&data, card); diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig index cf444b0ca2cc..2bc06e7344db 100644 --- a/drivers/mmc/host/Kconfig +++ b/drivers/mmc/host/Kconfig @@ -395,7 +395,7 @@ config MMC_SPI config MMC_S3C tristate "Samsung S3C SD/MMC Card Interface support" - depends on ARCH_S3C2410 + depends on ARCH_S3C24XX help This selects a driver for the MCI interface found in Samsung's S3C2410, S3C2412, S3C2440, S3C2442 CPUs. @@ -477,7 +477,6 @@ config MMC_SDHI config MMC_CB710 tristate "ENE CB710 MMC/SD Interface support" depends on PCI - select MISC_DEVICES select CB710_CORE help This option enables support for MMC/SD part of ENE CB710/720 Flash @@ -534,6 +533,31 @@ config MMC_DW_IDMAC Designware Mobile Storage IP block. This disables the external DMA interface. +config MMC_DW_PLTFM + tristate "Synopsys Designware MCI Support as platform device" + depends on MMC_DW + default y + help + This selects the common helper functions support for Host Controller + Interface based platform driver. Please select this option if the IP + is present as a platform device. This is the common interface for the + Synopsys Designware IP. + + If you have a controller with this interface, say Y or M here. + + If unsure, say Y. + +config MMC_DW_PCI + tristate "Synopsys Designware MCI support on PCI bus" + depends on MMC_DW && PCI + help + This selects the PCI bus for the Synopsys Designware Mobile Storage IP. + Select this option if the IP is present on PCI platform. + + If you have a controller with this interface, say Y or M here. + + If unsure, say N. + config MMC_SH_MMCIF tristate "SuperH Internal MMCIF support" depends on MMC_BLOCK && (SUPERH || ARCH_SHMOBILE) diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile index b4b83f302e32..3e7e26d08073 100644 --- a/drivers/mmc/host/Makefile +++ b/drivers/mmc/host/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_MMC_MXC) += mxcmmc.o obj-$(CONFIG_MMC_MXS) += mxs-mmc.o obj-$(CONFIG_MMC_SDHCI) += sdhci.o obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o +obj-$(subst m,y,$(CONFIG_MMC_SDHCI_PCI)) += sdhci-pci-data.o obj-$(CONFIG_MMC_SDHCI_PXAV3) += sdhci-pxav3.o obj-$(CONFIG_MMC_SDHCI_PXAV2) += sdhci-pxav2.o obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o @@ -38,6 +39,8 @@ obj-$(CONFIG_MMC_CB710) += cb710-mmc.o obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o obj-$(CONFIG_SDH_BFIN) += bfin_sdh.o obj-$(CONFIG_MMC_DW) += dw_mmc.o +obj-$(CONFIG_MMC_DW_PLTFM) += dw_mmc-pltfm.o +obj-$(CONFIG_MMC_DW_PCI) += dw_mmc-pci.o obj-$(CONFIG_MMC_SH_MMCIF) += sh_mmcif.o obj-$(CONFIG_MMC_JZ4740) += jz4740_mmc.o obj-$(CONFIG_MMC_VUB300) += vub300.o diff --git a/drivers/mmc/host/at91_mci.c b/drivers/mmc/host/at91_mci.c index f437c3e6f3aa..efdb81d21c44 100644 --- a/drivers/mmc/host/at91_mci.c +++ b/drivers/mmc/host/at91_mci.c @@ -86,7 +86,6 @@ static inline int at91mci_is_mci1rev2xx(void) { return ( cpu_is_at91sam9260() || cpu_is_at91sam9263() - || cpu_is_at91cap9() || cpu_is_at91sam9rl() || cpu_is_at91sam9g10() || cpu_is_at91sam9g20() @@ -236,7 +235,7 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data sg = &data->sg[i]; - sgbuffer = kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; + sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset; amount = min(size, sg->length); size -= amount; @@ -252,7 +251,7 @@ static inline void at91_mci_sg_to_dma(struct at91mci_host *host, struct mmc_data dmabuf = (unsigned *)tmpv; } - kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ); + kunmap_atomic(sgbuffer); if (size == 0) break; @@ -302,7 +301,7 @@ static void at91_mci_post_dma_read(struct at91mci_host *host) sg = &data->sg[i]; - sgbuffer = kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; + sgbuffer = kmap_atomic(sg_page(sg)) + sg->offset; amount = min(size, sg->length); size -= amount; @@ -318,7 +317,7 @@ static void at91_mci_post_dma_read(struct at91mci_host *host) } flush_kernel_dcache_page(sg_page(sg)); - kunmap_atomic(sgbuffer, KM_BIO_SRC_IRQ); + kunmap_atomic(sgbuffer); data->bytes_xfered += amount; if (size == 0) break; diff --git a/drivers/mmc/host/atmel-mci-regs.h b/drivers/mmc/host/atmel-mci-regs.h index 000b3ad0f5ca..787aba1682bb 100644 --- a/drivers/mmc/host/atmel-mci-regs.h +++ b/drivers/mmc/host/atmel-mci-regs.h @@ -31,6 +31,7 @@ # define ATMCI_MR_PDCFBYTE ( 1 << 13) /* Force Byte Transfer */ # define ATMCI_MR_PDCPADV ( 1 << 14) /* Padding Value */ # define ATMCI_MR_PDCMODE ( 1 << 15) /* PDC-oriented Mode */ +# define ATMCI_MR_CLKODD(x) ((x) << 16) /* LSB of Clock Divider */ #define ATMCI_DTOR 0x0008 /* Data Timeout */ # define ATMCI_DTOCYC(x) ((x) << 0) /* Data Timeout Cycles */ # define ATMCI_DTOMUL(x) ((x) << 4) /* Data Timeout Multiplier */ diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index a7ee50271465..e94476beca18 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -24,6 +24,7 @@ #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/stat.h> +#include <linux/types.h> #include <linux/mmc/host.h> #include <linux/mmc/sdio.h> @@ -76,6 +77,7 @@ struct atmel_mci_caps { bool has_cstor_reg; bool has_highspeed; bool has_rwproof; + bool has_odd_clk_div; }; struct atmel_mci_dma { @@ -173,6 +175,7 @@ struct atmel_mci { struct atmel_mci_dma dma; struct dma_chan *data_chan; + struct dma_slave_config dma_conf; u32 cmd_status; u32 data_status; @@ -480,7 +483,14 @@ err: static inline unsigned int atmci_ns_to_clocks(struct atmel_mci *host, unsigned int ns) { - return (ns * (host->bus_hz / 1000000) + 999) / 1000; + /* + * It is easier here to use us instead of ns for the timeout, + * it prevents from overflows during calculation. + */ + unsigned int us = DIV_ROUND_UP(ns, 1000); + + /* Maximum clock frequency is host->bus_hz/2 */ + return us * (DIV_ROUND_UP(host->bus_hz, 2000000)); } static void atmci_set_timeout(struct atmel_mci *host, @@ -823,6 +833,7 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) struct scatterlist *sg; unsigned int i; enum dma_data_direction direction; + enum dma_transfer_direction slave_dirn; unsigned int sglen; u32 iflags; @@ -860,16 +871,20 @@ atmci_prepare_data_dma(struct atmel_mci *host, struct mmc_data *data) if (host->caps.has_dma) atmci_writel(host, ATMCI_DMA, ATMCI_DMA_CHKSIZE(3) | ATMCI_DMAEN); - if (data->flags & MMC_DATA_READ) + if (data->flags & MMC_DATA_READ) { direction = DMA_FROM_DEVICE; - else + host->dma_conf.direction = slave_dirn = DMA_DEV_TO_MEM; + } else { direction = DMA_TO_DEVICE; + host->dma_conf.direction = slave_dirn = DMA_MEM_TO_DEV; + } sglen = dma_map_sg(chan->device->dev, data->sg, data->sg_len, direction); - desc = chan->device->device_prep_slave_sg(chan, - data->sg, sglen, direction, + dmaengine_slave_config(chan, &host->dma_conf); + desc = dmaengine_prep_slave_sg(chan, + data->sg, sglen, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) goto unmap_exit; @@ -965,11 +980,14 @@ static void atmci_start_request(struct atmel_mci *host, host->data_status = 0; if (host->need_reset) { + iflags = atmci_readl(host, ATMCI_IMR); + iflags &= (ATMCI_SDIOIRQA | ATMCI_SDIOIRQB); atmci_writel(host, ATMCI_CR, ATMCI_CR_SWRST); atmci_writel(host, ATMCI_CR, ATMCI_CR_MCIEN); atmci_writel(host, ATMCI_MR, host->mode_reg); if (host->caps.has_cfg_reg) atmci_writel(host, ATMCI_CFG, host->cfg_reg); + atmci_writel(host, ATMCI_IER, iflags); host->need_reset = false; } atmci_writel(host, ATMCI_SDCR, slot->sdc_reg); @@ -1117,16 +1135,27 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } /* Calculate clock divider */ - clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1; - if (clkdiv > 255) { - dev_warn(&mmc->class_dev, - "clock %u too slow; using %lu\n", - clock_min, host->bus_hz / (2 * 256)); - clkdiv = 255; + if (host->caps.has_odd_clk_div) { + clkdiv = DIV_ROUND_UP(host->bus_hz, clock_min) - 2; + if (clkdiv > 511) { + dev_warn(&mmc->class_dev, + "clock %u too slow; using %lu\n", + clock_min, host->bus_hz / (511 + 2)); + clkdiv = 511; + } + host->mode_reg = ATMCI_MR_CLKDIV(clkdiv >> 1) + | ATMCI_MR_CLKODD(clkdiv & 1); + } else { + clkdiv = DIV_ROUND_UP(host->bus_hz, 2 * clock_min) - 1; + if (clkdiv > 255) { + dev_warn(&mmc->class_dev, + "clock %u too slow; using %lu\n", + clock_min, host->bus_hz / (2 * 256)); + clkdiv = 255; + } + host->mode_reg = ATMCI_MR_CLKDIV(clkdiv); } - host->mode_reg = ATMCI_MR_CLKDIV(clkdiv); - /* * WRPROOF and RDPROOF prevent overruns/underruns by * stopping the clock when the FIFO is full/empty. @@ -1941,34 +1970,41 @@ static bool atmci_filter(struct dma_chan *chan, void *slave) } } -static void atmci_configure_dma(struct atmel_mci *host) +static bool atmci_configure_dma(struct atmel_mci *host) { struct mci_platform_data *pdata; if (host == NULL) - return; + return false; pdata = host->pdev->dev.platform_data; if (pdata && find_slave_dev(pdata->dma_slave)) { dma_cap_mask_t mask; - setup_dma_addr(pdata->dma_slave, - host->mapbase + ATMCI_TDR, - host->mapbase + ATMCI_RDR); - /* Try to grab a DMA channel */ dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); host->dma.chan = dma_request_channel(mask, atmci_filter, pdata->dma_slave); } - if (!host->dma.chan) - dev_notice(&host->pdev->dev, "DMA not available, using PIO\n"); - else + if (!host->dma.chan) { + dev_warn(&host->pdev->dev, "no DMA channel available\n"); + return false; + } else { dev_info(&host->pdev->dev, - "Using %s for DMA transfers\n", + "using %s for DMA transfers\n", dma_chan_name(host->dma.chan)); + + host->dma_conf.src_addr = host->mapbase + ATMCI_RDR; + host->dma_conf.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.src_maxburst = 1; + host->dma_conf.dst_addr = host->mapbase + ATMCI_TDR; + host->dma_conf.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + host->dma_conf.dst_maxburst = 1; + host->dma_conf.device_fc = false; + return true; + } } static inline unsigned int atmci_get_version(struct atmel_mci *host) @@ -1990,35 +2026,35 @@ static void __init atmci_get_cap(struct atmel_mci *host) "version: 0x%x\n", version); host->caps.has_dma = 0; - host->caps.has_pdc = 0; + host->caps.has_pdc = 1; host->caps.has_cfg_reg = 0; host->caps.has_cstor_reg = 0; host->caps.has_highspeed = 0; host->caps.has_rwproof = 0; + host->caps.has_odd_clk_div = 0; /* keep only major version number */ switch (version & 0xf00) { - case 0x100: - case 0x200: - host->caps.has_pdc = 1; - host->caps.has_rwproof = 1; - break; - case 0x300: - case 0x400: case 0x500: + host->caps.has_odd_clk_div = 1; + case 0x400: + case 0x300: #ifdef CONFIG_AT_HDMAC host->caps.has_dma = 1; #else - host->caps.has_dma = 0; dev_info(&host->pdev->dev, "has dma capability but dma engine is not selected, then use pio\n"); #endif + host->caps.has_pdc = 0; host->caps.has_cfg_reg = 1; host->caps.has_cstor_reg = 1; host->caps.has_highspeed = 1; + case 0x200: host->caps.has_rwproof = 1; + case 0x100: break; default: + host->caps.has_pdc = 0; dev_warn(&host->pdev->dev, "Unmanaged mci version, set minimum capabilities\n"); break; @@ -2078,8 +2114,7 @@ static int __init atmci_probe(struct platform_device *pdev) /* Get MCI capabilities and set operations according to it */ atmci_get_cap(host); - if (host->caps.has_dma) { - dev_info(&pdev->dev, "using DMA\n"); + if (host->caps.has_dma && atmci_configure_dma(host)) { host->prepare_data = &atmci_prepare_data_dma; host->submit_data = &atmci_submit_data_dma; host->stop_transfer = &atmci_stop_transfer_dma; @@ -2089,15 +2124,12 @@ static int __init atmci_probe(struct platform_device *pdev) host->submit_data = &atmci_submit_data_pdc; host->stop_transfer = &atmci_stop_transfer_pdc; } else { - dev_info(&pdev->dev, "no DMA, no PDC\n"); + dev_info(&pdev->dev, "using PIO\n"); host->prepare_data = &atmci_prepare_data; host->submit_data = &atmci_submit_data; host->stop_transfer = &atmci_stop_transfer; } - if (host->caps.has_dma) - atmci_configure_dma(host); - platform_set_drvdata(pdev, host); /* We need at least one slot to succeed */ diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index 5d3b9ae64523..dbd0c8a4e98a 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -153,6 +153,7 @@ static inline int has_dbdma(void) { switch (alchemy_get_cputype()) { case ALCHEMY_CPU_AU1200: + case ALCHEMY_CPU_AU1300: return 1; default: return 0; @@ -768,11 +769,15 @@ static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) config2 = au_readl(HOST_CONFIG2(host)); switch (ios->bus_width) { + case MMC_BUS_WIDTH_8: + config2 |= SD_CONFIG2_BB; + break; case MMC_BUS_WIDTH_4: + config2 &= ~SD_CONFIG2_BB; config2 |= SD_CONFIG2_WB; break; case MMC_BUS_WIDTH_1: - config2 &= ~SD_CONFIG2_WB; + config2 &= ~(SD_CONFIG2_WB | SD_CONFIG2_BB); break; } au_writel(config2, HOST_CONFIG2(host)); @@ -943,7 +948,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev) struct mmc_host *mmc; struct au1xmmc_host *host; struct resource *r; - int ret; + int ret, iflag; mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev); if (!mmc) { @@ -982,37 +987,43 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev) dev_err(&pdev->dev, "no IRQ defined\n"); goto out3; } - host->irq = r->start; - /* IRQ is shared among both SD controllers */ - ret = request_irq(host->irq, au1xmmc_irq, IRQF_SHARED, - DRIVER_NAME, host); - if (ret) { - dev_err(&pdev->dev, "cannot grab IRQ\n"); - goto out3; - } mmc->ops = &au1xmmc_ops; mmc->f_min = 450000; mmc->f_max = 24000000; + mmc->max_blk_size = 2048; + mmc->max_blk_count = 512; + + mmc->ocr_avail = AU1XMMC_OCR; + mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; + mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT; + + iflag = IRQF_SHARED; /* Au1100/Au1200: one int for both ctrls */ + switch (alchemy_get_cputype()) { case ALCHEMY_CPU_AU1100: mmc->max_seg_size = AU1100_MMC_DESCRIPTOR_SIZE; - mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT; break; case ALCHEMY_CPU_AU1200: mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE; - mmc->max_segs = AU1XMMC_DESCRIPTOR_COUNT; + break; + case ALCHEMY_CPU_AU1300: + iflag = 0; /* nothing is shared */ + mmc->max_seg_size = AU1200_MMC_DESCRIPTOR_SIZE; + mmc->f_max = 52000000; + if (host->ioarea->start == AU1100_SD0_PHYS_ADDR) + mmc->caps |= MMC_CAP_8_BIT_DATA; break; } - mmc->max_blk_size = 2048; - mmc->max_blk_count = 512; - - mmc->ocr_avail = AU1XMMC_OCR; - mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ; + ret = request_irq(host->irq, au1xmmc_irq, iflag, DRIVER_NAME, host); + if (ret) { + dev_err(&pdev->dev, "cannot grab IRQ\n"); + goto out3; + } host->status = HOST_S_IDLE; diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c index 0371bf502249..03666174ca48 100644 --- a/drivers/mmc/host/bfin_sdh.c +++ b/drivers/mmc/host/bfin_sdh.c @@ -627,17 +627,7 @@ static struct platform_driver sdh_driver = { }, }; -static int __init sdh_init(void) -{ - return platform_driver_register(&sdh_driver); -} -module_init(sdh_init); - -static void __exit sdh_exit(void) -{ - platform_driver_unregister(&sdh_driver); -} -module_exit(sdh_exit); +module_platform_driver(sdh_driver); MODULE_DESCRIPTION("Blackfin Secure Digital Host Driver"); MODULE_AUTHOR("Cliff Cai, Roy Huang"); diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c index ce2a47b71dd6..83693fd7c6b3 100644 --- a/drivers/mmc/host/cb710-mmc.c +++ b/drivers/mmc/host/cb710-mmc.c @@ -780,18 +780,7 @@ static struct platform_driver cb710_mmc_driver = { #endif }; -static int __init cb710_mmc_init_module(void) -{ - return platform_driver_register(&cb710_mmc_driver); -} - -static void __exit cb710_mmc_cleanup_module(void) -{ - platform_driver_unregister(&cb710_mmc_driver); -} - -module_init(cb710_mmc_init_module); -module_exit(cb710_mmc_cleanup_module); +module_platform_driver(cb710_mmc_driver); MODULE_AUTHOR("Michał Mirosław <mirq-linux@rere.qmqm.pl>"); MODULE_DESCRIPTION("ENE CB710 memory card reader driver - MMC/SD part"); diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c index 64a8325a4a8a..c1f3673ae1ef 100644 --- a/drivers/mmc/host/davinci_mmc.c +++ b/drivers/mmc/host/davinci_mmc.c @@ -160,6 +160,16 @@ module_param(rw_threshold, uint, S_IRUGO); MODULE_PARM_DESC(rw_threshold, "Read/Write threshold. Default = 32"); +static unsigned poll_threshold = 128; +module_param(poll_threshold, uint, S_IRUGO); +MODULE_PARM_DESC(poll_threshold, + "Polling transaction size threshold. Default = 128"); + +static unsigned poll_loopcount = 32; +module_param(poll_loopcount, uint, S_IRUGO); +MODULE_PARM_DESC(poll_loopcount, + "Maximum polling loop count. Default = 32"); + static unsigned __initdata use_dma = 1; module_param(use_dma, uint, 0); MODULE_PARM_DESC(use_dma, "Whether to use DMA or not. Default = 1"); @@ -193,6 +203,7 @@ struct mmc_davinci_host { bool use_dma; bool do_dma; bool sdio_int; + bool active_request; /* Scatterlist DMA uses one or more parameter RAM entries: * the main one (associated with rxdma or txdma) plus zero or @@ -219,6 +230,7 @@ struct mmc_davinci_host { #endif }; +static irqreturn_t mmc_davinci_irq(int irq, void *dev_id); /* PIO only */ static void mmc_davinci_sg_to_buf(struct mmc_davinci_host *host) @@ -376,7 +388,20 @@ static void mmc_davinci_start_command(struct mmc_davinci_host *host, writel(cmd->arg, host->base + DAVINCI_MMCARGHL); writel(cmd_reg, host->base + DAVINCI_MMCCMD); - writel(im_val, host->base + DAVINCI_MMCIM); + + host->active_request = true; + + if (!host->do_dma && host->bytes_left <= poll_threshold) { + u32 count = poll_loopcount; + + while (host->active_request && count--) { + mmc_davinci_irq(0, host); + cpu_relax(); + } + } + + if (host->active_request) + writel(im_val, host->base + DAVINCI_MMCIM); } /*----------------------------------------------------------------------*/ @@ -915,6 +940,7 @@ mmc_davinci_xfer_done(struct mmc_davinci_host *host, struct mmc_data *data) if (!data->stop || (host->cmd && host->cmd->error)) { mmc_request_done(host->mmc, data->mrq); writel(0, host->base + DAVINCI_MMCIM); + host->active_request = false; } else mmc_davinci_start_command(host, data->stop); } @@ -942,6 +968,7 @@ static void mmc_davinci_cmd_done(struct mmc_davinci_host *host, cmd->mrq->cmd->retries = 0; mmc_request_done(host->mmc, cmd->mrq); writel(0, host->base + DAVINCI_MMCIM); + host->active_request = false; } } @@ -1009,12 +1036,33 @@ static irqreturn_t mmc_davinci_irq(int irq, void *dev_id) * by read. So, it is not unbouned loop even in the case of * non-dma. */ - while (host->bytes_left && (status & (MMCST0_DXRDY | MMCST0_DRRDY))) { - davinci_fifo_data_trans(host, rw_threshold); - status = readl(host->base + DAVINCI_MMCST0); - if (!status) - break; - qstatus |= status; + if (host->bytes_left && (status & (MMCST0_DXRDY | MMCST0_DRRDY))) { + unsigned long im_val; + + /* + * If interrupts fire during the following loop, they will be + * handled by the handler, but the PIC will still buffer these. + * As a result, the handler will be called again to serve these + * needlessly. In order to avoid these spurious interrupts, + * keep interrupts masked during the loop. + */ + im_val = readl(host->base + DAVINCI_MMCIM); + writel(0, host->base + DAVINCI_MMCIM); + + do { + davinci_fifo_data_trans(host, rw_threshold); + status = readl(host->base + DAVINCI_MMCST0); + qstatus |= status; + } while (host->bytes_left && + (status & (MMCST0_DXRDY | MMCST0_DRRDY))); + + /* + * If an interrupt is pending, it is assumed it will fire when + * it is unmasked. This assumption is also taken when the MMCIM + * is first set. Otherwise, writing to MMCIM after reading the + * status is race-prone. + */ + writel(im_val, host->base + DAVINCI_MMCIM); } if (qstatus & MMCST0_DATDNE) { @@ -1418,17 +1466,14 @@ static int davinci_mmcsd_suspend(struct device *dev) struct mmc_davinci_host *host = platform_get_drvdata(pdev); int ret; - mmc_host_enable(host->mmc); ret = mmc_suspend_host(host->mmc); if (!ret) { writel(0, host->base + DAVINCI_MMCIM); mmc_davinci_reset_ctrl(host, 1); - mmc_host_disable(host->mmc); clk_disable(host->clk); host->suspended = 1; } else { host->suspended = 0; - mmc_host_disable(host->mmc); } return ret; @@ -1444,7 +1489,6 @@ static int davinci_mmcsd_resume(struct device *dev) return 0; clk_enable(host->clk); - mmc_host_enable(host->mmc); mmc_davinci_reset_ctrl(host, 0); ret = mmc_resume_host(host->mmc); diff --git a/drivers/mmc/host/dw_mmc-pci.c b/drivers/mmc/host/dw_mmc-pci.c new file mode 100644 index 000000000000..dc0d25a013e0 --- /dev/null +++ b/drivers/mmc/host/dw_mmc-pci.c @@ -0,0 +1,158 @@ +/* + * Synopsys DesignWare Multimedia Card PCI Interface driver + * + * Copyright (C) 2012 Vayavya Labs Pvt. Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/dw_mmc.h> +#include "dw_mmc.h" + +#define PCI_BAR_NO 2 +#define COMPLETE_BAR 0 +#define SYNOPSYS_DW_MCI_VENDOR_ID 0x700 +#define SYNOPSYS_DW_MCI_DEVICE_ID 0x1107 +/* Defining the Capabilities */ +#define DW_MCI_CAPABILITIES (MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED |\ + MMC_CAP_SD_HIGHSPEED | MMC_CAP_8_BIT_DATA |\ + MMC_CAP_SDIO_IRQ) + +static struct dw_mci_board pci_board_data = { + .num_slots = 1, + .caps = DW_MCI_CAPABILITIES, + .bus_hz = 33 * 1000 * 1000, + .detect_delay_ms = 200, + .fifo_depth = 32, +}; + +static int __devinit dw_mci_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *entries) +{ + struct dw_mci *host; + int ret; + + ret = pci_enable_device(pdev); + if (ret) + return ret; + if (pci_request_regions(pdev, "dw_mmc_pci")) { + ret = -ENODEV; + goto err_disable_dev; + } + + host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL); + if (!host) { + ret = -ENOMEM; + goto err_release; + } + + host->irq = pdev->irq; + host->irq_flags = IRQF_SHARED; + host->dev = pdev->dev; + host->pdata = &pci_board_data; + + host->regs = pci_iomap(pdev, PCI_BAR_NO, COMPLETE_BAR); + if (!host->regs) { + ret = -EIO; + goto err_unmap; + } + + pci_set_drvdata(pdev, host); + ret = dw_mci_probe(host); + if (ret) + goto err_probe_failed; + return ret; + +err_probe_failed: + pci_iounmap(pdev, host->regs); +err_unmap: + kfree(host); +err_release: + pci_release_regions(pdev); +err_disable_dev: + pci_disable_device(pdev); + return ret; +} + +static void __devexit dw_mci_pci_remove(struct pci_dev *pdev) +{ + struct dw_mci *host = pci_get_drvdata(pdev); + + dw_mci_remove(host); + pci_set_drvdata(pdev, NULL); + pci_release_regions(pdev); + pci_iounmap(pdev, host->regs); + kfree(host); + pci_disable_device(pdev); +} + +#ifdef CONFIG_PM_SLEEP +static int dw_mci_pci_suspend(struct device *dev) +{ + int ret; + struct pci_dev *pdev = to_pci_dev(dev); + struct dw_mci *host = pci_get_drvdata(pdev); + + ret = dw_mci_suspend(host); + return ret; +} + +static int dw_mci_pci_resume(struct device *dev) +{ + int ret; + struct pci_dev *pdev = to_pci_dev(dev); + struct dw_mci *host = pci_get_drvdata(pdev); + + ret = dw_mci_resume(host); + return ret; +} +#else +#define dw_mci_pci_suspend NULL +#define dw_mci_pci_resume NULL +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(dw_mci_pci_pmops, dw_mci_pci_suspend, dw_mci_pci_resume); + +static DEFINE_PCI_DEVICE_TABLE(dw_mci_pci_id) = { + { PCI_DEVICE(SYNOPSYS_DW_MCI_VENDOR_ID, SYNOPSYS_DW_MCI_DEVICE_ID) }, + {} +}; +MODULE_DEVICE_TABLE(pci, dw_mci_pci_id); + +static struct pci_driver dw_mci_pci_driver = { + .name = "dw_mmc_pci", + .id_table = dw_mci_pci_id, + .probe = dw_mci_pci_probe, + .remove = dw_mci_pci_remove, + .driver = { + .pm = &dw_mci_pci_pmops + }, +}; + +static int __init dw_mci_init(void) +{ + return pci_register_driver(&dw_mci_pci_driver); +} + +static void __exit dw_mci_exit(void) +{ + pci_unregister_driver(&dw_mci_pci_driver); +} + +module_init(dw_mci_init); +module_exit(dw_mci_exit); + +MODULE_DESCRIPTION("DW Multimedia Card PCI Interface driver"); +MODULE_AUTHOR("Shashidhar Hiremath <shashidharh@vayavyalabs.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c new file mode 100644 index 000000000000..92ec3eb3aae7 --- /dev/null +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -0,0 +1,134 @@ +/* + * Synopsys DesignWare Multimedia Card Interface driver + * + * Copyright (C) 2009 NXP Semiconductors + * Copyright (C) 2009, 2010 Imagination Technologies Ltd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/mmc/host.h> +#include <linux/mmc/mmc.h> +#include <linux/mmc/dw_mmc.h> +#include "dw_mmc.h" + +static int dw_mci_pltfm_probe(struct platform_device *pdev) +{ + struct dw_mci *host; + struct resource *regs; + int ret; + + host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL); + if (!host) + return -ENOMEM; + + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!regs) { + ret = -ENXIO; + goto err_free; + } + + host->irq = platform_get_irq(pdev, 0); + if (host->irq < 0) { + ret = host->irq; + goto err_free; + } + + host->dev = pdev->dev; + host->irq_flags = 0; + host->pdata = pdev->dev.platform_data; + ret = -ENOMEM; + host->regs = ioremap(regs->start, resource_size(regs)); + if (!host->regs) + goto err_free; + platform_set_drvdata(pdev, host); + ret = dw_mci_probe(host); + if (ret) + goto err_out; + return ret; +err_out: + iounmap(host->regs); +err_free: + kfree(host); + return ret; +} + +static int __exit dw_mci_pltfm_remove(struct platform_device *pdev) +{ + struct dw_mci *host = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + dw_mci_remove(host); + iounmap(host->regs); + kfree(host); + return 0; +} + +#ifdef CONFIG_PM_SLEEP +/* + * TODO: we should probably disable the clock to the card in the suspend path. + */ +static int dw_mci_pltfm_suspend(struct device *dev) +{ + int ret; + struct dw_mci *host = dev_get_drvdata(dev); + + ret = dw_mci_suspend(host); + if (ret) + return ret; + + return 0; +} + +static int dw_mci_pltfm_resume(struct device *dev) +{ + int ret; + struct dw_mci *host = dev_get_drvdata(dev); + + ret = dw_mci_resume(host); + if (ret) + return ret; + + return 0; +} +#else +#define dw_mci_pltfm_suspend NULL +#define dw_mci_pltfm_resume NULL +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(dw_mci_pltfm_pmops, dw_mci_pltfm_suspend, dw_mci_pltfm_resume); + +static struct platform_driver dw_mci_pltfm_driver = { + .remove = __exit_p(dw_mci_pltfm_remove), + .driver = { + .name = "dw_mmc", + .pm = &dw_mci_pltfm_pmops, + }, +}; + +static int __init dw_mci_init(void) +{ + return platform_driver_probe(&dw_mci_pltfm_driver, dw_mci_pltfm_probe); +} + +static void __exit dw_mci_exit(void) +{ + platform_driver_unregister(&dw_mci_pltfm_driver); +} + +module_init(dw_mci_init); +module_exit(dw_mci_exit); + +MODULE_DESCRIPTION("DW Multimedia Card Interface driver"); +MODULE_AUTHOR("NXP Semiconductor VietNam"); +MODULE_AUTHOR("Imagination Technologies Ltd"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index 3aaeb0841914..bf3c9b456aaf 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -22,7 +22,6 @@ #include <linux/ioport.h> #include <linux/module.h> #include <linux/platform_device.h> -#include <linux/scatterlist.h> #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/stat.h> @@ -269,7 +268,7 @@ static void dw_mci_start_command(struct dw_mci *host, struct mmc_command *cmd, u32 cmd_flags) { host->cmd = cmd; - dev_vdbg(&host->pdev->dev, + dev_vdbg(&host->dev, "start command: ARGR=0x%08x CMDR=0x%08x\n", cmd->arg, cmd_flags); @@ -296,15 +295,25 @@ static void dw_mci_stop_dma(struct dw_mci *host) } } +static int dw_mci_get_dma_dir(struct mmc_data *data) +{ + if (data->flags & MMC_DATA_WRITE) + return DMA_TO_DEVICE; + else + return DMA_FROM_DEVICE; +} + #ifdef CONFIG_MMC_DW_IDMAC static void dw_mci_dma_cleanup(struct dw_mci *host) { struct mmc_data *data = host->data; if (data) - dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len, - ((data->flags & MMC_DATA_WRITE) - ? DMA_TO_DEVICE : DMA_FROM_DEVICE)); + if (!data->host_cookie) + dma_unmap_sg(&host->dev, + data->sg, + data->sg_len, + dw_mci_get_dma_dir(data)); } static void dw_mci_idmac_stop_dma(struct dw_mci *host) @@ -327,7 +336,7 @@ static void dw_mci_idmac_complete_dma(struct dw_mci *host) { struct mmc_data *data = host->data; - dev_vdbg(&host->pdev->dev, "DMA complete\n"); + dev_vdbg(&host->dev, "DMA complete\n"); host->dma_ops->cleanup(host); @@ -429,17 +438,15 @@ static struct dw_mci_dma_ops dw_mci_idmac_ops = { }; #endif /* CONFIG_MMC_DW_IDMAC */ -static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) +static int dw_mci_pre_dma_transfer(struct dw_mci *host, + struct mmc_data *data, + bool next) { struct scatterlist *sg; - unsigned int i, direction, sg_len; - u32 temp; - - host->using_dma = 0; + unsigned int i, sg_len; - /* If we don't have a channel, we can't do DMA */ - if (!host->use_dma) - return -ENODEV; + if (!next && data->host_cookie) + return data->host_cookie; /* * We don't do DMA on "complex" transfers, i.e. with @@ -448,6 +455,7 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) */ if (data->blocks * data->blksz < DW_MCI_DMA_THRESHOLD) return -EINVAL; + if (data->blksz & 3) return -EINVAL; @@ -456,17 +464,74 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) return -EINVAL; } - host->using_dma = 1; + sg_len = dma_map_sg(&host->dev, + data->sg, + data->sg_len, + dw_mci_get_dma_dir(data)); + if (sg_len == 0) + return -EINVAL; - if (data->flags & MMC_DATA_READ) - direction = DMA_FROM_DEVICE; - else - direction = DMA_TO_DEVICE; + if (next) + data->host_cookie = sg_len; + + return sg_len; +} + +static void dw_mci_pre_req(struct mmc_host *mmc, + struct mmc_request *mrq, + bool is_first_req) +{ + struct dw_mci_slot *slot = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + + if (!slot->host->use_dma || !data) + return; + + if (data->host_cookie) { + data->host_cookie = 0; + return; + } + + if (dw_mci_pre_dma_transfer(slot->host, mrq->data, 1) < 0) + data->host_cookie = 0; +} + +static void dw_mci_post_req(struct mmc_host *mmc, + struct mmc_request *mrq, + int err) +{ + struct dw_mci_slot *slot = mmc_priv(mmc); + struct mmc_data *data = mrq->data; + + if (!slot->host->use_dma || !data) + return; + + if (data->host_cookie) + dma_unmap_sg(&slot->host->dev, + data->sg, + data->sg_len, + dw_mci_get_dma_dir(data)); + data->host_cookie = 0; +} + +static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) +{ + int sg_len; + u32 temp; + + host->using_dma = 0; + + /* If we don't have a channel, we can't do DMA */ + if (!host->use_dma) + return -ENODEV; + + sg_len = dw_mci_pre_dma_transfer(host, data, 0); + if (sg_len < 0) + return sg_len; - sg_len = dma_map_sg(&host->pdev->dev, data->sg, data->sg_len, - direction); + host->using_dma = 1; - dev_vdbg(&host->pdev->dev, + dev_vdbg(&host->dev, "sd sg_cpu: %#lx sg_dma: %#lx sg_len: %d\n", (unsigned long)host->sg_cpu, (unsigned long)host->sg_dma, sg_len); @@ -502,8 +567,14 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data) host->dir_status = DW_MCI_SEND_STATUS; if (dw_mci_submit_data_dma(host, data)) { + int flags = SG_MITER_ATOMIC; + if (host->data->flags & MMC_DATA_READ) + flags |= SG_MITER_TO_SG; + else + flags |= SG_MITER_FROM_SG; + + sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags); host->sg = data->sg; - host->pio_offset = 0; host->part_buf_start = 0; host->part_buf_count = 0; @@ -574,8 +645,8 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot) SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0); /* enable clock */ - mci_writel(host, CLKENA, SDMMC_CLKEN_ENABLE | - SDMMC_CLKEN_LOW_PWR); + mci_writel(host, CLKENA, ((SDMMC_CLKEN_ENABLE | + SDMMC_CLKEN_LOW_PWR) << slot->id)); /* inform CIU */ mci_send_cmd(slot, @@ -588,11 +659,11 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot) mci_writel(host, CTYPE, (slot->ctype << slot->id)); } -static void dw_mci_start_request(struct dw_mci *host, - struct dw_mci_slot *slot) +static void __dw_mci_start_request(struct dw_mci *host, + struct dw_mci_slot *slot, + struct mmc_command *cmd) { struct mmc_request *mrq; - struct mmc_command *cmd; struct mmc_data *data; u32 cmdflags; @@ -610,14 +681,13 @@ static void dw_mci_start_request(struct dw_mci *host, host->completed_events = 0; host->data_status = 0; - data = mrq->data; + data = cmd->data; if (data) { dw_mci_set_timeout(host); mci_writel(host, BYTCNT, data->blksz*data->blocks); mci_writel(host, BLKSIZ, data->blksz); } - cmd = mrq->cmd; cmdflags = dw_mci_prepare_command(slot->mmc, cmd); /* this is the first command, send the initialization clock */ @@ -635,6 +705,16 @@ static void dw_mci_start_request(struct dw_mci *host, host->stop_cmdr = dw_mci_prepare_command(slot->mmc, mrq->stop); } +static void dw_mci_start_request(struct dw_mci *host, + struct dw_mci_slot *slot) +{ + struct mmc_request *mrq = slot->mrq; + struct mmc_command *cmd; + + cmd = mrq->sbc ? mrq->sbc : mrq->cmd; + __dw_mci_start_request(host, slot, cmd); +} + /* must be called with host->lock held */ static void dw_mci_queue_request(struct dw_mci *host, struct dw_mci_slot *slot, struct mmc_request *mrq) @@ -698,12 +778,15 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) break; } + regs = mci_readl(slot->host, UHS_REG); + /* DDR mode set */ - if (ios->timing == MMC_TIMING_UHS_DDR50) { - regs = mci_readl(slot->host, UHS_REG); + if (ios->timing == MMC_TIMING_UHS_DDR50) regs |= (0x1 << slot->id) << 16; - mci_writel(slot->host, UHS_REG, regs); - } + else + regs &= ~(0x1 << slot->id) << 16; + + mci_writel(slot->host, UHS_REG, regs); if (ios->clock) { /* @@ -783,6 +866,8 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb) static const struct mmc_host_ops dw_mci_ops = { .request = dw_mci_request, + .pre_req = dw_mci_pre_req, + .post_req = dw_mci_post_req, .set_ios = dw_mci_set_ios, .get_ro = dw_mci_get_ro, .get_cd = dw_mci_get_cd, @@ -804,12 +889,12 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq) slot = list_entry(host->queue.next, struct dw_mci_slot, queue_node); list_del(&slot->queue_node); - dev_vdbg(&host->pdev->dev, "list not empty: %s is next\n", + dev_vdbg(&host->dev, "list not empty: %s is next\n", mmc_hostname(slot->mmc)); host->state = STATE_SENDING_CMD; dw_mci_start_request(host, slot); } else { - dev_vdbg(&host->pdev->dev, "list empty\n"); + dev_vdbg(&host->dev, "list empty\n"); host->state = STATE_IDLE; } @@ -889,7 +974,14 @@ static void dw_mci_tasklet_func(unsigned long priv) cmd = host->cmd; host->cmd = NULL; set_bit(EVENT_CMD_COMPLETE, &host->completed_events); - dw_mci_command_complete(host, host->mrq->cmd); + dw_mci_command_complete(host, cmd); + if (cmd == host->mrq->sbc && !cmd->error) { + prev_state = state = STATE_SENDING_CMD; + __dw_mci_start_request(host, host->cur_slot, + host->mrq->cmd); + goto unlock; + } + if (!host->mrq->data || cmd->error) { dw_mci_request_end(host, host->mrq); goto unlock; @@ -941,7 +1033,7 @@ static void dw_mci_tasklet_func(unsigned long priv) data->bytes_xfered = 0; data->error = -ETIMEDOUT; } else { - dev_err(&host->pdev->dev, + dev_err(&host->dev, "data FIFO error " "(status=%08x)\n", status); @@ -953,6 +1045,7 @@ static void dw_mci_tasklet_func(unsigned long priv) * generates a block interrupt, hence setting * the scatter-gather pointer to NULL. */ + sg_miter_stop(&host->sg_miter); host->sg = NULL; ctrl = mci_readl(host, CTRL); ctrl |= SDMMC_CTRL_FIFO_RESET; @@ -967,6 +1060,12 @@ static void dw_mci_tasklet_func(unsigned long priv) goto unlock; } + if (host->mrq->sbc && !data->error) { + data->stop->error = 0; + dw_mci_request_end(host, host->mrq); + goto unlock; + } + prev_state = state = STATE_SENDING_STOP; if (!data->error) send_stop_cmd(host, data); @@ -1286,54 +1385,44 @@ static void dw_mci_pull_data(struct dw_mci *host, void *buf, int cnt) static void dw_mci_read_data_pio(struct dw_mci *host) { - struct scatterlist *sg = host->sg; - void *buf = sg_virt(sg); - unsigned int offset = host->pio_offset; + struct sg_mapping_iter *sg_miter = &host->sg_miter; + void *buf; + unsigned int offset; struct mmc_data *data = host->data; int shift = host->data_shift; u32 status; unsigned int nbytes = 0, len; + unsigned int remain, fcnt; do { - len = host->part_buf_count + - (SDMMC_GET_FCNT(mci_readl(host, STATUS)) << shift); - if (offset + len <= sg->length) { + if (!sg_miter_next(sg_miter)) + goto done; + + host->sg = sg_miter->__sg; + buf = sg_miter->addr; + remain = sg_miter->length; + offset = 0; + + do { + fcnt = (SDMMC_GET_FCNT(mci_readl(host, STATUS)) + << shift) + host->part_buf_count; + len = min(remain, fcnt); + if (!len) + break; dw_mci_pull_data(host, (void *)(buf + offset), len); - offset += len; nbytes += len; - - if (offset == sg->length) { - flush_dcache_page(sg_page(sg)); - host->sg = sg = sg_next(sg); - if (!sg) - goto done; - - offset = 0; - buf = sg_virt(sg); - } - } else { - unsigned int remaining = sg->length - offset; - dw_mci_pull_data(host, (void *)(buf + offset), - remaining); - nbytes += remaining; - - flush_dcache_page(sg_page(sg)); - host->sg = sg = sg_next(sg); - if (!sg) - goto done; - - offset = len - remaining; - buf = sg_virt(sg); - dw_mci_pull_data(host, buf, offset); - nbytes += offset; - } + remain -= len; + } while (remain); + sg_miter->consumed = offset; status = mci_readl(host, MINTSTS); mci_writel(host, RINTSTS, SDMMC_INT_RXDR); if (status & DW_MCI_DATA_ERROR_FLAGS) { host->data_status = status; data->bytes_xfered += nbytes; + sg_miter_stop(sg_miter); + host->sg = NULL; smp_wmb(); set_bit(EVENT_DATA_ERROR, &host->pending_events); @@ -1342,65 +1431,66 @@ static void dw_mci_read_data_pio(struct dw_mci *host) return; } } while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/ - host->pio_offset = offset; data->bytes_xfered += nbytes; + + if (!remain) { + if (!sg_miter_next(sg_miter)) + goto done; + sg_miter->consumed = 0; + } + sg_miter_stop(sg_miter); return; done: data->bytes_xfered += nbytes; + sg_miter_stop(sg_miter); + host->sg = NULL; smp_wmb(); set_bit(EVENT_XFER_COMPLETE, &host->pending_events); } static void dw_mci_write_data_pio(struct dw_mci *host) { - struct scatterlist *sg = host->sg; - void *buf = sg_virt(sg); - unsigned int offset = host->pio_offset; + struct sg_mapping_iter *sg_miter = &host->sg_miter; + void *buf; + unsigned int offset; struct mmc_data *data = host->data; int shift = host->data_shift; u32 status; unsigned int nbytes = 0, len; + unsigned int fifo_depth = host->fifo_depth; + unsigned int remain, fcnt; do { - len = ((host->fifo_depth - - SDMMC_GET_FCNT(mci_readl(host, STATUS))) << shift) - - host->part_buf_count; - if (offset + len <= sg->length) { + if (!sg_miter_next(sg_miter)) + goto done; + + host->sg = sg_miter->__sg; + buf = sg_miter->addr; + remain = sg_miter->length; + offset = 0; + + do { + fcnt = ((fifo_depth - + SDMMC_GET_FCNT(mci_readl(host, STATUS))) + << shift) - host->part_buf_count; + len = min(remain, fcnt); + if (!len) + break; host->push_data(host, (void *)(buf + offset), len); - offset += len; nbytes += len; - if (offset == sg->length) { - host->sg = sg = sg_next(sg); - if (!sg) - goto done; - - offset = 0; - buf = sg_virt(sg); - } - } else { - unsigned int remaining = sg->length - offset; - - host->push_data(host, (void *)(buf + offset), - remaining); - nbytes += remaining; - - host->sg = sg = sg_next(sg); - if (!sg) - goto done; - - offset = len - remaining; - buf = sg_virt(sg); - host->push_data(host, (void *)buf, offset); - nbytes += offset; - } + remain -= len; + } while (remain); + sg_miter->consumed = offset; status = mci_readl(host, MINTSTS); mci_writel(host, RINTSTS, SDMMC_INT_TXDR); if (status & DW_MCI_DATA_ERROR_FLAGS) { host->data_status = status; data->bytes_xfered += nbytes; + sg_miter_stop(sg_miter); + host->sg = NULL; smp_wmb(); @@ -1410,12 +1500,20 @@ static void dw_mci_write_data_pio(struct dw_mci *host) return; } } while (status & SDMMC_INT_TXDR); /* if TXDR write again */ - host->pio_offset = offset; data->bytes_xfered += nbytes; + + if (!remain) { + if (!sg_miter_next(sg_miter)) + goto done; + sg_miter->consumed = 0; + } + sg_miter_stop(sg_miter); return; done: data->bytes_xfered += nbytes; + sg_miter_stop(sg_miter); + host->sg = NULL; smp_wmb(); set_bit(EVENT_XFER_COMPLETE, &host->pending_events); } @@ -1618,6 +1716,7 @@ static void dw_mci_work_routine_card(struct work_struct *work) * block interrupt, hence setting the * scatter-gather pointer to NULL. */ + sg_miter_stop(&host->sg_miter); host->sg = NULL; ctrl = mci_readl(host, CTRL); @@ -1651,7 +1750,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) struct mmc_host *mmc; struct dw_mci_slot *slot; - mmc = mmc_alloc_host(sizeof(struct dw_mci_slot), &host->pdev->dev); + mmc = mmc_alloc_host(sizeof(struct dw_mci_slot), &host->dev); if (!mmc) return -ENOMEM; @@ -1678,8 +1777,9 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->caps) mmc->caps = host->pdata->caps; - else - mmc->caps = 0; + + if (host->pdata->caps2) + mmc->caps2 = host->pdata->caps2; if (host->pdata->get_bus_wd) if (host->pdata->get_bus_wd(slot->id) >= 4) @@ -1688,13 +1788,11 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) if (host->pdata->quirks & DW_MCI_QUIRK_HIGHSPEED) mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED; -#ifdef CONFIG_MMC_DW_IDMAC - mmc->max_segs = host->ring_size; - mmc->max_blk_size = 65536; - mmc->max_blk_count = host->ring_size; - mmc->max_seg_size = 0x1000; - mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count; -#else + if (mmc->caps2 & MMC_CAP2_POWEROFF_NOTIFY) + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; + else + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE; + if (host->pdata->blk_settings) { mmc->max_segs = host->pdata->blk_settings->max_segs; mmc->max_blk_size = host->pdata->blk_settings->max_blk_size; @@ -1703,13 +1801,20 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id) mmc->max_seg_size = host->pdata->blk_settings->max_seg_size; } else { /* Useful defaults if platform data is unset. */ +#ifdef CONFIG_MMC_DW_IDMAC + mmc->max_segs = host->ring_size; + mmc->max_blk_size = 65536; + mmc->max_blk_count = host->ring_size; + mmc->max_seg_size = 0x1000; + mmc->max_req_size = mmc->max_seg_size * mmc->max_blk_count; +#else mmc->max_segs = 64; mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */ mmc->max_blk_count = 512; mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count; mmc->max_seg_size = mmc->max_req_size; - } #endif /* CONFIG_MMC_DW_IDMAC */ + } host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); if (IS_ERR(host->vmmc)) { @@ -1757,10 +1862,10 @@ static void dw_mci_cleanup_slot(struct dw_mci_slot *slot, unsigned int id) static void dw_mci_init_dma(struct dw_mci *host) { /* Alloc memory for sg translation */ - host->sg_cpu = dma_alloc_coherent(&host->pdev->dev, PAGE_SIZE, + host->sg_cpu = dma_alloc_coherent(&host->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL); if (!host->sg_cpu) { - dev_err(&host->pdev->dev, "%s: could not alloc DMA memory\n", + dev_err(&host->dev, "%s: could not alloc DMA memory\n", __func__); goto no_dma; } @@ -1768,7 +1873,7 @@ static void dw_mci_init_dma(struct dw_mci *host) /* Determine which DMA interface to use */ #ifdef CONFIG_MMC_DW_IDMAC host->dma_ops = &dw_mci_idmac_ops; - dev_info(&host->pdev->dev, "Using internal DMA controller.\n"); + dev_info(&host->dev, "Using internal DMA controller.\n"); #endif if (!host->dma_ops) @@ -1776,12 +1881,12 @@ static void dw_mci_init_dma(struct dw_mci *host) if (host->dma_ops->init) { if (host->dma_ops->init(host)) { - dev_err(&host->pdev->dev, "%s: Unable to initialize " + dev_err(&host->dev, "%s: Unable to initialize " "DMA Controller.\n", __func__); goto no_dma; } } else { - dev_err(&host->pdev->dev, "DMA initialization not found.\n"); + dev_err(&host->dev, "DMA initialization not found.\n"); goto no_dma; } @@ -1789,7 +1894,7 @@ static void dw_mci_init_dma(struct dw_mci *host) return; no_dma: - dev_info(&host->pdev->dev, "Using PIO mode.\n"); + dev_info(&host->dev, "Using PIO mode.\n"); host->use_dma = 0; return; } @@ -1815,61 +1920,37 @@ static bool mci_wait_reset(struct device *dev, struct dw_mci *host) return false; } -static int dw_mci_probe(struct platform_device *pdev) +int dw_mci_probe(struct dw_mci *host) { - struct dw_mci *host; - struct resource *regs; - struct dw_mci_board *pdata; - int irq, ret, i, width; + int width, i, ret = 0; u32 fifo_size; - regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!regs) - return -ENXIO; - - irq = platform_get_irq(pdev, 0); - if (irq < 0) - return irq; - - host = kzalloc(sizeof(struct dw_mci), GFP_KERNEL); - if (!host) - return -ENOMEM; - - host->pdev = pdev; - host->pdata = pdata = pdev->dev.platform_data; - if (!pdata || !pdata->init) { - dev_err(&pdev->dev, + if (!host->pdata || !host->pdata->init) { + dev_err(&host->dev, "Platform data must supply init function\n"); - ret = -ENODEV; - goto err_freehost; + return -ENODEV; } - if (!pdata->select_slot && pdata->num_slots > 1) { - dev_err(&pdev->dev, + if (!host->pdata->select_slot && host->pdata->num_slots > 1) { + dev_err(&host->dev, "Platform data must supply select_slot function\n"); - ret = -ENODEV; - goto err_freehost; + return -ENODEV; } - if (!pdata->bus_hz) { - dev_err(&pdev->dev, + if (!host->pdata->bus_hz) { + dev_err(&host->dev, "Platform data must supply bus speed\n"); - ret = -ENODEV; - goto err_freehost; + return -ENODEV; } - host->bus_hz = pdata->bus_hz; - host->quirks = pdata->quirks; + host->bus_hz = host->pdata->bus_hz; + host->quirks = host->pdata->quirks; spin_lock_init(&host->lock); INIT_LIST_HEAD(&host->queue); - ret = -ENOMEM; - host->regs = ioremap(regs->start, resource_size(regs)); - if (!host->regs) - goto err_freehost; - host->dma_ops = pdata->dma_ops; + host->dma_ops = host->pdata->dma_ops; dw_mci_init_dma(host); /* @@ -1899,7 +1980,7 @@ static int dw_mci_probe(struct platform_device *pdev) } /* Reset all blocks */ - if (!mci_wait_reset(&pdev->dev, host)) { + if (!mci_wait_reset(&host->dev, host)) { ret = -ENODEV; goto err_dmaunmap; } @@ -1923,7 +2004,7 @@ static int dw_mci_probe(struct platform_device *pdev) * should put it in the platform data. */ fifo_size = mci_readl(host, FIFOTH); - fifo_size = 1 + ((fifo_size >> 16) & 0x7ff); + fifo_size = 1 + ((fifo_size >> 16) & 0xfff); } else { fifo_size = host->pdata->fifo_depth; } @@ -1942,13 +2023,10 @@ static int dw_mci_probe(struct platform_device *pdev) if (!dw_mci_card_workqueue) goto err_dmaunmap; INIT_WORK(&host->card_work, dw_mci_work_routine_card); - - ret = request_irq(irq, dw_mci_interrupt, 0, "dw-mci", host); + ret = request_irq(host->irq, dw_mci_interrupt, host->irq_flags, "dw-mci", host); if (ret) goto err_workqueue; - platform_set_drvdata(pdev, host); - if (host->pdata->num_slots) host->num_slots = host->pdata->num_slots; else @@ -1968,7 +2046,7 @@ static int dw_mci_probe(struct platform_device *pdev) * Need to check the version-id and set data-offset for DATA register. */ host->verid = SDMMC_GET_VERID(mci_readl(host, VERID)); - dev_info(&pdev->dev, "Version ID is %04x\n", host->verid); + dev_info(&host->dev, "Version ID is %04x\n", host->verid); if (host->verid < DW_MMC_240A) host->data_offset = DATA_OFFSET; @@ -1985,12 +2063,12 @@ static int dw_mci_probe(struct platform_device *pdev) DW_MCI_ERROR_FLAGS | SDMMC_INT_CD); mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */ - dev_info(&pdev->dev, "DW MMC controller at irq %d, " + dev_info(&host->dev, "DW MMC controller at irq %d, " "%d bit host data width, " "%u deep fifo\n", - irq, width, fifo_size); + host->irq, width, fifo_size); if (host->quirks & DW_MCI_QUIRK_IDMAC_DTO) - dev_info(&pdev->dev, "Internal DMAC interrupt fix enabled.\n"); + dev_info(&host->dev, "Internal DMAC interrupt fix enabled.\n"); return 0; @@ -2001,7 +2079,7 @@ err_init_slot: dw_mci_cleanup_slot(host->slot[i], i); i--; } - free_irq(irq, host); + free_irq(host->irq, host); err_workqueue: destroy_workqueue(dw_mci_card_workqueue); @@ -2009,33 +2087,26 @@ err_workqueue: err_dmaunmap: if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); - dma_free_coherent(&host->pdev->dev, PAGE_SIZE, + dma_free_coherent(&host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); - iounmap(host->regs); if (host->vmmc) { regulator_disable(host->vmmc); regulator_put(host->vmmc); } - - -err_freehost: - kfree(host); return ret; } +EXPORT_SYMBOL(dw_mci_probe); -static int __exit dw_mci_remove(struct platform_device *pdev) +void dw_mci_remove(struct dw_mci *host) { - struct dw_mci *host = platform_get_drvdata(pdev); int i; mci_writel(host, RINTSTS, 0xFFFFFFFF); mci_writel(host, INTMASK, 0); /* disable all mmc interrupt first */ - platform_set_drvdata(pdev, NULL); - for (i = 0; i < host->num_slots; i++) { - dev_dbg(&pdev->dev, "remove slot %d\n", i); + dev_dbg(&host->dev, "remove slot %d\n", i); if (host->slot[i]) dw_mci_cleanup_slot(host->slot[i], i); } @@ -2044,9 +2115,9 @@ static int __exit dw_mci_remove(struct platform_device *pdev) mci_writel(host, CLKENA, 0); mci_writel(host, CLKSRC, 0); - free_irq(platform_get_irq(pdev, 0), host); + free_irq(host->irq, host); destroy_workqueue(dw_mci_card_workqueue); - dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); + dma_free_coherent(&host->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma); if (host->use_dma && host->dma_ops->exit) host->dma_ops->exit(host); @@ -2056,20 +2127,18 @@ static int __exit dw_mci_remove(struct platform_device *pdev) regulator_put(host->vmmc); } - iounmap(host->regs); - - kfree(host); - return 0; } +EXPORT_SYMBOL(dw_mci_remove); -#ifdef CONFIG_PM + + +#ifdef CONFIG_PM_SLEEP /* * TODO: we should probably disable the clock to the card in the suspend path. */ -static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg) +int dw_mci_suspend(struct dw_mci *host) { - int i, ret; - struct dw_mci *host = platform_get_drvdata(pdev); + int i, ret = 0; for (i = 0; i < host->num_slots; i++) { struct dw_mci_slot *slot = host->slot[i]; @@ -2091,11 +2160,11 @@ static int dw_mci_suspend(struct platform_device *pdev, pm_message_t mesg) return 0; } +EXPORT_SYMBOL(dw_mci_suspend); -static int dw_mci_resume(struct platform_device *pdev) +int dw_mci_resume(struct dw_mci *host) { int i, ret; - struct dw_mci *host = platform_get_drvdata(pdev); if (host->vmmc) regulator_enable(host->vmmc); @@ -2103,7 +2172,7 @@ static int dw_mci_resume(struct platform_device *pdev) if (host->dma_ops->init) host->dma_ops->init(host); - if (!mci_wait_reset(&pdev->dev, host)) { + if (!mci_wait_reset(&host->dev, host)) { ret = -ENODEV; return ret; } @@ -2125,31 +2194,19 @@ static int dw_mci_resume(struct platform_device *pdev) if (ret < 0) return ret; } - return 0; } -#else -#define dw_mci_suspend NULL -#define dw_mci_resume NULL -#endif /* CONFIG_PM */ - -static struct platform_driver dw_mci_driver = { - .remove = __exit_p(dw_mci_remove), - .suspend = dw_mci_suspend, - .resume = dw_mci_resume, - .driver = { - .name = "dw_mmc", - }, -}; +EXPORT_SYMBOL(dw_mci_resume); +#endif /* CONFIG_PM_SLEEP */ static int __init dw_mci_init(void) { - return platform_driver_probe(&dw_mci_driver, dw_mci_probe); + printk(KERN_INFO "Synopsys Designware Multimedia Card Interface Driver"); + return 0; } static void __exit dw_mci_exit(void) { - platform_driver_unregister(&dw_mci_driver); } module_init(dw_mci_init); diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 72c071f6e001..15c27e17c23f 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -126,7 +126,7 @@ #define SDMMC_CMD_RESP_EXP BIT(6) #define SDMMC_CMD_INDX(n) ((n) & 0x1F) /* Status register defines */ -#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FF) +#define SDMMC_GET_FCNT(x) (((x)>>17) & 0x1FFF) /* Internal DMAC interrupt defines */ #define SDMMC_IDMAC_INT_AI BIT(9) #define SDMMC_IDMAC_INT_NI BIT(8) @@ -175,4 +175,11 @@ (*(volatile u64 __force *)((dev)->regs + SDMMC_##reg) = (value)) #endif +extern int dw_mci_probe(struct dw_mci *host); +extern void dw_mci_remove(struct dw_mci *host); +#ifdef CONFIG_PM +extern int dw_mci_suspend(struct dw_mci *host); +extern int dw_mci_resume(struct dw_mci *host); +#endif + #endif /* _DW_MMC_H_ */ diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index 74218ad677e4..c8852a8128a9 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -1012,17 +1012,7 @@ static struct platform_driver jz4740_mmc_driver = { }, }; -static int __init jz4740_mmc_init(void) -{ - return platform_driver_register(&jz4740_mmc_driver); -} -module_init(jz4740_mmc_init); - -static void __exit jz4740_mmc_exit(void) -{ - platform_driver_unregister(&jz4740_mmc_driver); -} -module_exit(jz4740_mmc_exit); +module_platform_driver(jz4740_mmc_driver); MODULE_DESCRIPTION("JZ4740 SD/MMC controller driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 92946b84e9fa..273306c68d58 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1525,7 +1525,6 @@ static struct of_device_id mmc_spi_of_match_table[] __devinitdata = { static struct spi_driver mmc_spi_driver = { .driver = { .name = "mmc_spi", - .bus = &spi_bus_type, .owner = THIS_MODULE, .of_match_table = mmc_spi_of_match_table, }, diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index fa8dd2fda4b2..032b84791a16 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -30,6 +30,7 @@ #include <linux/dma-mapping.h> #include <linux/amba/mmci.h> #include <linux/pm_runtime.h> +#include <linux/types.h> #include <asm/div64.h> #include <asm/io.h> @@ -53,6 +54,8 @@ static unsigned int fmax = 515633; * @sdio: variant supports SDIO * @st_clkdiv: true if using a ST-specific clock divider algorithm * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register + * @pwrreg_powerup: power up value for MMCIPOWER register + * @signal_direction: input/out direction of bus signals can be indicated */ struct variant_data { unsigned int clkreg; @@ -63,18 +66,22 @@ struct variant_data { bool sdio; bool st_clkdiv; bool blksz_datactrl16; + u32 pwrreg_powerup; + bool signal_direction; }; static struct variant_data variant_arm = { .fifosize = 16 * 4, .fifohalfsize = 8 * 4, .datalength_bits = 16, + .pwrreg_powerup = MCI_PWR_UP, }; static struct variant_data variant_arm_extended_fifo = { .fifosize = 128 * 4, .fifohalfsize = 64 * 4, .datalength_bits = 16, + .pwrreg_powerup = MCI_PWR_UP, }; static struct variant_data variant_u300 = { @@ -83,6 +90,8 @@ static struct variant_data variant_u300 = { .clkreg_enable = MCI_ST_U300_HWFCEN, .datalength_bits = 16, .sdio = true, + .pwrreg_powerup = MCI_PWR_ON, + .signal_direction = true, }; static struct variant_data variant_ux500 = { @@ -93,6 +102,8 @@ static struct variant_data variant_ux500 = { .datalength_bits = 24, .sdio = true, .st_clkdiv = true, + .pwrreg_powerup = MCI_PWR_ON, + .signal_direction = true, }; static struct variant_data variant_ux500v2 = { @@ -104,11 +115,35 @@ static struct variant_data variant_ux500v2 = { .sdio = true, .st_clkdiv = true, .blksz_datactrl16 = true, + .pwrreg_powerup = MCI_PWR_ON, + .signal_direction = true, }; /* * This must be called with host->lock held */ +static void mmci_write_clkreg(struct mmci_host *host, u32 clk) +{ + if (host->clk_reg != clk) { + host->clk_reg = clk; + writel(clk, host->base + MMCICLOCK); + } +} + +/* + * This must be called with host->lock held + */ +static void mmci_write_pwrreg(struct mmci_host *host, u32 pwr) +{ + if (host->pwr_reg != pwr) { + host->pwr_reg = pwr; + writel(pwr, host->base + MMCIPOWER); + } +} + +/* + * This must be called with host->lock held + */ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) { struct variant_data *variant = host->variant; @@ -153,7 +188,7 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired) if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8) clk |= MCI_ST_8BIT_BUS; - writel(clk, host->base + MMCICLOCK); + mmci_write_clkreg(host, clk); } static void @@ -166,14 +201,10 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq) host->mrq = NULL; host->cmd = NULL; - /* - * Need to drop the host lock here; mmc_request_done may call - * back into the driver... - */ - spin_unlock(&host->lock); - pm_runtime_put(mmc_dev(host->mmc)); mmc_request_done(host->mmc, mrq); - spin_lock(&host->lock); + + pm_runtime_mark_last_busy(mmc_dev(host->mmc)); + pm_runtime_put_autosuspend(mmc_dev(host->mmc)); } static void mmci_set_mask1(struct mmci_host *host, unsigned int mask) @@ -370,10 +401,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, .dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES, .src_maxburst = variant->fifohalfsize >> 2, /* # of words */ .dst_maxburst = variant->fifohalfsize >> 2, /* # of words */ + .device_fc = false, }; struct dma_chan *chan; struct dma_device *device; struct dma_async_tx_descriptor *desc; + enum dma_data_direction buffer_dirn; int nr_sg; /* Check if next job is already prepared */ @@ -387,10 +420,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, } if (data->flags & MMC_DATA_READ) { - conf.direction = DMA_FROM_DEVICE; + conf.direction = DMA_DEV_TO_MEM; + buffer_dirn = DMA_FROM_DEVICE; chan = host->dma_rx_channel; } else { - conf.direction = DMA_TO_DEVICE; + conf.direction = DMA_MEM_TO_DEV; + buffer_dirn = DMA_TO_DEVICE; chan = host->dma_tx_channel; } @@ -403,12 +438,12 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, return -EINVAL; device = chan->device; - nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, conf.direction); + nr_sg = dma_map_sg(device->dev, data->sg, data->sg_len, buffer_dirn); if (nr_sg == 0) return -EINVAL; dmaengine_slave_config(chan, &conf); - desc = device->device_prep_slave_sg(chan, data->sg, nr_sg, + desc = dmaengine_prep_slave_sg(chan, data->sg, nr_sg, conf.direction, DMA_CTRL_ACK); if (!desc) goto unmap_exit; @@ -426,7 +461,7 @@ static int mmci_dma_prep_data(struct mmci_host *host, struct mmc_data *data, unmap_exit: if (!next) dmaengine_terminate_all(chan); - dma_unmap_sg(device->dev, data->sg, data->sg_len, conf.direction); + dma_unmap_sg(device->dev, data->sg, data->sg_len, buffer_dirn); return -ENOMEM; } @@ -604,6 +639,11 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) if (data->flags & MMC_DATA_READ) datactrl |= MCI_DPSM_DIRECTION; + /* The ST Micro variants has a special bit to enable SDIO */ + if (variant->sdio && host->mmc->card) + if (mmc_card_sdio(host->mmc->card)) + datactrl |= MCI_ST_DPSM_SDIOEN; + /* * Attempt to use DMA operation mode, if this * should fail, fall back to PIO mode @@ -632,11 +672,6 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data) irqmask = MCI_TXFIFOHALFEMPTYMASK; } - /* The ST Micro variants has a special bit to enable SDIO */ - if (variant->sdio && host->mmc->card) - if (mmc_card_sdio(host->mmc->card)) - datactrl |= MCI_ST_DPSM_SDIOEN; - writel(datactrl, base + MMCIDATACTRL); writel(readl(base + MMCIMASK0) & ~MCI_DATAENDMASK, base + MMCIMASK0); mmci_set_mask1(host, irqmask); @@ -783,7 +818,24 @@ static int mmci_pio_read(struct mmci_host *host, char *buffer, unsigned int rema if (count <= 0) break; - readsl(base + MMCIFIFO, ptr, count >> 2); + /* + * SDIO especially may want to send something that is + * not divisible by 4 (as opposed to card sectors + * etc). Therefore make sure to always read the last bytes + * while only doing full 32-bit reads towards the FIFO. + */ + if (unlikely(count & 0x3)) { + if (count < 4) { + unsigned char buf[4]; + readsl(base + MMCIFIFO, buf, 1); + memcpy(ptr, buf, count); + } else { + readsl(base + MMCIFIFO, ptr, count >> 2); + count &= ~0x3; + } + } else { + readsl(base + MMCIFIFO, ptr, count >> 2); + } ptr += count; remain -= count; @@ -818,14 +870,13 @@ static int mmci_pio_write(struct mmci_host *host, char *buffer, unsigned int rem */ if (variant->sdio && mmc_card_sdio(host->mmc->card)) { + u32 clk; if (count < 8) - writel(readl(host->base + MMCICLOCK) & - ~variant->clkreg_enable, - host->base + MMCICLOCK); + clk = host->clk_reg & ~variant->clkreg_enable; else - writel(readl(host->base + MMCICLOCK) | - variant->clkreg_enable, - host->base + MMCICLOCK); + clk = host->clk_reg | variant->clkreg_enable; + + mmci_write_clkreg(host, clk); } /* @@ -1012,10 +1063,17 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq) static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct mmci_host *host = mmc_priv(mmc); + struct variant_data *variant = host->variant; u32 pwr = 0; unsigned long flags; int ret; + pm_runtime_get_sync(mmc_dev(mmc)); + + if (host->plat->ios_handler && + host->plat->ios_handler(mmc_dev(mmc), ios)) + dev_err(mmc_dev(mmc), "platform ios_handler failed\n"); + switch (ios->power_mode) { case MMC_POWER_OFF: if (host->vcc) @@ -1032,22 +1090,38 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * power should be rare so we print an error * and return here. */ - return; + goto out; } } - if (host->plat->vdd_handler) - pwr |= host->plat->vdd_handler(mmc_dev(mmc), ios->vdd, - ios->power_mode); - /* The ST version does not have this, fall through to POWER_ON */ - if (host->hw_designer != AMBA_VENDOR_ST) { - pwr |= MCI_PWR_UP; - break; - } + /* + * The ST Micro variant doesn't have the PL180s MCI_PWR_UP + * and instead uses MCI_PWR_ON so apply whatever value is + * configured in the variant data. + */ + pwr |= variant->pwrreg_powerup; + + break; case MMC_POWER_ON: pwr |= MCI_PWR_ON; break; } + if (variant->signal_direction && ios->power_mode != MMC_POWER_OFF) { + /* + * The ST Micro variant has some additional bits + * indicating signal direction for the signals in + * the SD/MMC bus and feedback-clock usage. + */ + pwr |= host->plat->sigdir; + + if (ios->bus_width == MMC_BUS_WIDTH_4) + pwr &= ~MCI_ST_DATA74DIREN; + else if (ios->bus_width == MMC_BUS_WIDTH_1) + pwr &= (~MCI_ST_DATA74DIREN & + ~MCI_ST_DATA31DIREN & + ~MCI_ST_DATA2DIREN); + } + if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) { if (host->hw_designer != AMBA_VENDOR_ST) pwr |= MCI_ROD; @@ -1063,13 +1137,13 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_lock_irqsave(&host->lock, flags); mmci_set_clkreg(host, ios->clock); - - if (host->pwr != pwr) { - host->pwr = pwr; - writel(pwr, host->base + MMCIPOWER); - } + mmci_write_pwrreg(host, pwr); spin_unlock_irqrestore(&host->lock, flags); + + out: + pm_runtime_mark_last_busy(mmc_dev(mmc)); + pm_runtime_put_autosuspend(mmc_dev(mmc)); } static int mmci_get_ro(struct mmc_host *mmc) @@ -1245,6 +1319,7 @@ static int __devinit mmci_probe(struct amba_device *dev, if (host->vcc == NULL) mmc->ocr_avail = plat->ocr_mask; mmc->caps = plat->capabilities; + mmc->caps2 = plat->capabilities2; /* * We can do SGIO @@ -1267,12 +1342,13 @@ static int __devinit mmci_probe(struct amba_device *dev, /* * Block size can be up to 2048 bytes, but must be a power of two. */ - mmc->max_blk_size = 2048; + mmc->max_blk_size = 1 << 11; /* - * No limit on the number of blocks transferred. + * Limit the number of blocks transferred so that we don't overflow + * the maximum request size. */ - mmc->max_blk_count = mmc->max_req_size; + mmc->max_blk_count = mmc->max_req_size >> 11; spin_lock_init(&host->lock); @@ -1321,7 +1397,7 @@ static int __devinit mmci_probe(struct amba_device *dev, if (ret) goto unmap; - if (dev->irq[1] == NO_IRQ) + if (dev->irq[1] == NO_IRQ || !dev->irq[1]) host->singleirq = true; else { ret = request_irq(dev->irq[1], mmci_pio_irq, IRQF_SHARED, @@ -1341,6 +1417,8 @@ static int __devinit mmci_probe(struct amba_device *dev, mmci_dma_setup(host); + pm_runtime_set_autosuspend_delay(&dev->dev, 50); + pm_runtime_use_autosuspend(&dev->dev); pm_runtime_put(&dev->dev); mmc_add_host(mmc); @@ -1425,43 +1503,49 @@ static int __devexit mmci_remove(struct amba_device *dev) return 0; } -#ifdef CONFIG_PM -static int mmci_suspend(struct amba_device *dev, pm_message_t state) +#ifdef CONFIG_SUSPEND +static int mmci_suspend(struct device *dev) { - struct mmc_host *mmc = amba_get_drvdata(dev); + struct amba_device *adev = to_amba_device(dev); + struct mmc_host *mmc = amba_get_drvdata(adev); int ret = 0; if (mmc) { struct mmci_host *host = mmc_priv(mmc); ret = mmc_suspend_host(mmc); - if (ret == 0) + if (ret == 0) { + pm_runtime_get_sync(dev); writel(0, host->base + MMCIMASK0); + } } return ret; } -static int mmci_resume(struct amba_device *dev) +static int mmci_resume(struct device *dev) { - struct mmc_host *mmc = amba_get_drvdata(dev); + struct amba_device *adev = to_amba_device(dev); + struct mmc_host *mmc = amba_get_drvdata(adev); int ret = 0; if (mmc) { struct mmci_host *host = mmc_priv(mmc); writel(MCI_IRQENABLE, host->base + MMCIMASK0); + pm_runtime_put(dev); ret = mmc_resume_host(mmc); } return ret; } -#else -#define mmci_suspend NULL -#define mmci_resume NULL #endif +static const struct dev_pm_ops mmci_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mmci_suspend, mmci_resume) +}; + static struct amba_id mmci_ids[] = { { .id = 0x00041180, @@ -1507,26 +1591,15 @@ MODULE_DEVICE_TABLE(amba, mmci_ids); static struct amba_driver mmci_driver = { .drv = { .name = DRIVER_NAME, + .pm = &mmci_dev_pm_ops, }, .probe = mmci_probe, .remove = __devexit_p(mmci_remove), - .suspend = mmci_suspend, - .resume = mmci_resume, .id_table = mmci_ids, }; -static int __init mmci_init(void) -{ - return amba_driver_register(&mmci_driver); -} - -static void __exit mmci_exit(void) -{ - amba_driver_unregister(&mmci_driver); -} +module_amba_driver(mmci_driver); -module_init(mmci_init); -module_exit(mmci_exit); module_param(fmax, uint, 0444); MODULE_DESCRIPTION("ARM PrimeCell PL180/181 Multimedia Card Interface driver"); diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index 79e4143ab9df..d437ccf62d6b 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -13,16 +13,6 @@ #define MCI_PWR_ON 0x03 #define MCI_OD (1 << 6) #define MCI_ROD (1 << 7) -/* - * The ST Micro version does not have ROD and reuse the voltage registers - * for direction settings - */ -#define MCI_ST_DATA2DIREN (1 << 2) -#define MCI_ST_CMDDIREN (1 << 3) -#define MCI_ST_DATA0DIREN (1 << 4) -#define MCI_ST_DATA31DIREN (1 << 5) -#define MCI_ST_FBCLKEN (1 << 7) -#define MCI_ST_DATA74DIREN (1 << 8) #define MMCICLOCK 0x004 #define MCI_CLK_ENABLE (1 << 8) @@ -160,7 +150,7 @@ (MCI_RXFIFOHALFFULLMASK | MCI_RXDATAAVLBLMASK | \ MCI_TXFIFOHALFEMPTYMASK) -#define NR_SG 16 +#define NR_SG 128 struct clk; struct variant_data; @@ -189,7 +179,8 @@ struct mmci_host { unsigned int mclk; unsigned int cclk; - u32 pwr; + u32 pwr_reg; + u32 clk_reg; struct mmci_platform_data *plat; struct variant_data *variant; diff --git a/drivers/mmc/host/msm_sdcc.c b/drivers/mmc/host/msm_sdcc.c index 80d8eb143b48..1d14cda95e56 100644 --- a/drivers/mmc/host/msm_sdcc.c +++ b/drivers/mmc/host/msm_sdcc.c @@ -689,8 +689,8 @@ msmsdcc_pio_irq(int irq, void *dev_id) /* Map the current scatter buffer */ local_irq_save(flags); - buffer = kmap_atomic(sg_page(host->pio.sg), - KM_BIO_SRC_IRQ) + host->pio.sg->offset; + buffer = kmap_atomic(sg_page(host->pio.sg)) + + host->pio.sg->offset; buffer += host->pio.sg_off; remain = host->pio.sg->length - host->pio.sg_off; len = 0; @@ -700,7 +700,7 @@ msmsdcc_pio_irq(int irq, void *dev_id) len = msmsdcc_pio_write(host, buffer, remain, status); /* Unmap the buffer */ - kunmap_atomic(buffer, KM_BIO_SRC_IRQ); + kunmap_atomic(buffer); local_irq_restore(flags); host->pio.sg_off += len; @@ -1480,18 +1480,7 @@ static struct platform_driver msmsdcc_driver = { }, }; -static int __init msmsdcc_init(void) -{ - return platform_driver_register(&msmsdcc_driver); -} - -static void __exit msmsdcc_exit(void) -{ - platform_driver_unregister(&msmsdcc_driver); -} - -module_init(msmsdcc_init); -module_exit(msmsdcc_exit); +module_platform_driver(msmsdcc_driver); MODULE_DESCRIPTION("Qualcomm MSM 7X00A Multimedia Card Interface driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 8e0fbe994047..b2058b432320 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -33,6 +33,7 @@ #include <linux/gpio.h> #include <linux/regulator/consumer.h> #include <linux/dmaengine.h> +#include <linux/types.h> #include <asm/dma.h> #include <asm/irq.h> @@ -218,6 +219,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) unsigned int blksz = data->blksz; unsigned int datasize = nob * blksz; struct scatterlist *sg; + enum dma_transfer_direction slave_dirn; int i, nents; if (data->flags & MMC_DATA_STREAM) @@ -240,18 +242,21 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) } } - if (data->flags & MMC_DATA_READ) + if (data->flags & MMC_DATA_READ) { host->dma_dir = DMA_FROM_DEVICE; - else + slave_dirn = DMA_DEV_TO_MEM; + } else { host->dma_dir = DMA_TO_DEVICE; + slave_dirn = DMA_MEM_TO_DEV; + } nents = dma_map_sg(host->dma->device->dev, data->sg, data->sg_len, host->dma_dir); if (nents != data->sg_len) return -EINVAL; - host->desc = host->dma->device->device_prep_slave_sg(host->dma, - data->sg, data->sg_len, host->dma_dir, + host->desc = dmaengine_prep_slave_sg(host->dma, + data->sg, data->sg_len, slave_dirn, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!host->desc) { @@ -263,6 +268,7 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data) wmb(); dmaengine_submit(host->desc); + dma_async_issue_pending(host->dma); return 0; } @@ -706,6 +712,7 @@ static int mxcmci_setup_dma(struct mmc_host *mmc) config->src_addr_width = 4; config->dst_maxburst = host->burstlen; config->src_maxburst = host->burstlen; + config->device_fc = false; return dmaengine_slave_config(host->dma, config); } @@ -1047,18 +1054,7 @@ static struct platform_driver mxcmci_driver = { } }; -static int __init mxcmci_init(void) -{ - return platform_driver_register(&mxcmci_driver); -} - -static void __exit mxcmci_exit(void) -{ - platform_driver_unregister(&mxcmci_driver); -} - -module_init(mxcmci_init); -module_exit(mxcmci_exit); +module_platform_driver(mxcmci_driver); MODULE_DESCRIPTION("i.MX Multimedia Card Interface Driver"); MODULE_AUTHOR("Sascha Hauer, Pengutronix"); diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index 973011f9a298..b0f2ef988188 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -38,10 +38,10 @@ #include <linux/gpio.h> #include <linux/regulator/consumer.h> #include <linux/module.h> +#include <linux/fsl/mxs-dma.h> #include <mach/mxs.h> #include <mach/common.h> -#include <mach/dma.h> #include <mach/mmc.h> #define DRIVER_NAME "mxs-mmc" @@ -154,6 +154,7 @@ struct mxs_mmc_host { struct dma_chan *dmach; struct mxs_dma_data dma_data; unsigned int dma_dir; + enum dma_transfer_direction slave_dirn; u32 ssp_pio_words[SSP_PIO_NUM]; unsigned int version; @@ -304,7 +305,7 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id) } static struct dma_async_tx_descriptor *mxs_mmc_prep_dma( - struct mxs_mmc_host *host, unsigned int append) + struct mxs_mmc_host *host, unsigned long flags) { struct dma_async_tx_descriptor *desc; struct mmc_data *data = host->data; @@ -323,8 +324,8 @@ static struct dma_async_tx_descriptor *mxs_mmc_prep_dma( sg_len = SSP_PIO_NUM; } - desc = host->dmach->device->device_prep_slave_sg(host->dmach, - sgl, sg_len, host->dma_dir, append); + desc = dmaengine_prep_slave_sg(host->dmach, + sgl, sg_len, host->slave_dirn, flags); if (desc) { desc->callback = mxs_mmc_dma_irq_callback; desc->callback_param = host; @@ -356,7 +357,8 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host) host->ssp_pio_words[1] = cmd0; host->ssp_pio_words[2] = cmd1; host->dma_dir = DMA_NONE; - desc = mxs_mmc_prep_dma(host, 0); + host->slave_dirn = DMA_TRANS_NONE; + desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK); if (!desc) goto out; @@ -395,7 +397,8 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host) host->ssp_pio_words[1] = cmd0; host->ssp_pio_words[2] = cmd1; host->dma_dir = DMA_NONE; - desc = mxs_mmc_prep_dma(host, 0); + host->slave_dirn = DMA_TRANS_NONE; + desc = mxs_mmc_prep_dma(host, DMA_CTRL_ACK); if (!desc) goto out; @@ -433,6 +436,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) int i; unsigned short dma_data_dir, timeout; + enum dma_transfer_direction slave_dirn; unsigned int data_size = 0, log2_blksz; unsigned int blocks = data->blocks; @@ -448,9 +452,11 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) if (data->flags & MMC_DATA_WRITE) { dma_data_dir = DMA_TO_DEVICE; + slave_dirn = DMA_MEM_TO_DEV; read = 0; } else { dma_data_dir = DMA_FROM_DEVICE; + slave_dirn = DMA_DEV_TO_MEM; read = BM_SSP_CTRL0_READ; } @@ -510,6 +516,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) host->ssp_pio_words[1] = cmd0; host->ssp_pio_words[2] = cmd1; host->dma_dir = DMA_NONE; + host->slave_dirn = DMA_TRANS_NONE; desc = mxs_mmc_prep_dma(host, 0); if (!desc) goto out; @@ -518,7 +525,8 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) WARN_ON(host->data != NULL); host->data = data; host->dma_dir = dma_data_dir; - desc = mxs_mmc_prep_dma(host, 1); + host->slave_dirn = slave_dirn; + desc = mxs_mmc_prep_dma(host, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) goto out; @@ -855,18 +863,7 @@ static struct platform_driver mxs_mmc_driver = { }, }; -static int __init mxs_mmc_init(void) -{ - return platform_driver_register(&mxs_mmc_driver); -} - -static void __exit mxs_mmc_exit(void) -{ - platform_driver_unregister(&mxs_mmc_driver); -} - -module_init(mxs_mmc_init); -module_exit(mxs_mmc_exit); +module_platform_driver(mxs_mmc_driver); MODULE_DESCRIPTION("FREESCALE MXS MMC peripheral"); MODULE_AUTHOR("Freescale Semiconductor"); diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c index ab66f2454dc4..1534b582c419 100644 --- a/drivers/mmc/host/of_mmc_spi.c +++ b/drivers/mmc/host/of_mmc_spi.c @@ -113,8 +113,8 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi) const int j = i * 2; u32 mask; - mask = mmc_vddrange_to_ocrmask(voltage_ranges[j], - voltage_ranges[j + 1]); + mask = mmc_vddrange_to_ocrmask(be32_to_cpu(voltage_ranges[j]), + be32_to_cpu(voltage_ranges[j + 1])); if (!mask) { ret = -EINVAL; dev_err(dev, "OF: voltage-range #%d is invalid\n", i); diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index d1fb561e089d..5c2b1c10af9c 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -24,9 +24,11 @@ #include <linux/delay.h> #include <linux/dma-mapping.h> #include <linux/platform_device.h> -#include <linux/workqueue.h> #include <linux/timer.h> #include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/of_device.h> #include <linux/mmc/host.h> #include <linux/mmc/core.h> #include <linux/mmc/mmc.h> @@ -107,20 +109,8 @@ #define SOFTRESET (1 << 1) #define RESETDONE (1 << 0) -/* - * FIXME: Most likely all the data using these _DEVID defines should come - * from the platform_data, or implemented in controller and slot specific - * functions. - */ -#define OMAP_MMC1_DEVID 0 -#define OMAP_MMC2_DEVID 1 -#define OMAP_MMC3_DEVID 2 -#define OMAP_MMC4_DEVID 3 -#define OMAP_MMC5_DEVID 4 - #define MMC_AUTOSUSPEND_DELAY 100 #define MMC_TIMEOUT_MS 20 -#define OMAP_MMC_MASTER_CLOCK 96000000 #define OMAP_MMC_MIN_CLOCK 400000 #define OMAP_MMC_MAX_CLOCK 52000000 #define DRIVER_NAME "omap_hsmmc" @@ -163,11 +153,9 @@ struct omap_hsmmc_host { */ struct regulator *vcc; struct regulator *vcc_aux; - struct work_struct mmc_carddetect_work; void __iomem *base; resource_size_t mapbase; spinlock_t irq_lock; /* Prevent races with irq handler */ - unsigned int id; unsigned int dma_len; unsigned int dma_sg_idx; unsigned char bus_mode; @@ -182,7 +170,6 @@ struct omap_hsmmc_host { int got_dbclk; int response_busy; int context_loss; - int dpm_state; int vdd; int protect_card; int reqs_blocked; @@ -244,28 +231,7 @@ static int omap_hsmmc_resume_cdirq(struct device *dev, int slot) #ifdef CONFIG_REGULATOR -static int omap_hsmmc_1_set_power(struct device *dev, int slot, int power_on, - int vdd) -{ - struct omap_hsmmc_host *host = - platform_get_drvdata(to_platform_device(dev)); - int ret; - - if (mmc_slot(host).before_set_reg) - mmc_slot(host).before_set_reg(dev, slot, power_on, vdd); - - if (power_on) - ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); - else - ret = mmc_regulator_set_ocr(host->mmc, host->vcc, 0); - - if (mmc_slot(host).after_set_reg) - mmc_slot(host).after_set_reg(dev, slot, power_on, vdd); - - return ret; -} - -static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on, +static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, int vdd) { struct omap_hsmmc_host *host = @@ -278,6 +244,13 @@ static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on, */ if (!host->vcc) return 0; + /* + * With DT, never turn OFF the regulator. This is because + * the pbias cell programming support is still missing when + * booting with Device tree + */ + if (of_have_populated_dt() && !vdd) + return 0; if (mmc_slot(host).before_set_reg) mmc_slot(host).before_set_reg(dev, slot, power_on, vdd); @@ -321,106 +294,16 @@ static int omap_hsmmc_235_set_power(struct device *dev, int slot, int power_on, return ret; } -static int omap_hsmmc_4_set_power(struct device *dev, int slot, int power_on, - int vdd) -{ - return 0; -} - -static int omap_hsmmc_1_set_sleep(struct device *dev, int slot, int sleep, - int vdd, int cardsleep) -{ - struct omap_hsmmc_host *host = - platform_get_drvdata(to_platform_device(dev)); - int mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL; - - return regulator_set_mode(host->vcc, mode); -} - -static int omap_hsmmc_235_set_sleep(struct device *dev, int slot, int sleep, - int vdd, int cardsleep) -{ - struct omap_hsmmc_host *host = - platform_get_drvdata(to_platform_device(dev)); - int err, mode; - - /* - * If we don't see a Vcc regulator, assume it's a fixed - * voltage always-on regulator. - */ - if (!host->vcc) - return 0; - - mode = sleep ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL; - - if (!host->vcc_aux) - return regulator_set_mode(host->vcc, mode); - - if (cardsleep) { - /* VCC can be turned off if card is asleep */ - if (sleep) - err = mmc_regulator_set_ocr(host->mmc, host->vcc, 0); - else - err = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd); - } else - err = regulator_set_mode(host->vcc, mode); - if (err) - return err; - - if (!mmc_slot(host).vcc_aux_disable_is_sleep) - return regulator_set_mode(host->vcc_aux, mode); - - if (sleep) - return regulator_disable(host->vcc_aux); - else - return regulator_enable(host->vcc_aux); -} - -static int omap_hsmmc_4_set_sleep(struct device *dev, int slot, int sleep, - int vdd, int cardsleep) -{ - return 0; -} - static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) { struct regulator *reg; - int ret = 0; int ocr_value = 0; - switch (host->id) { - case OMAP_MMC1_DEVID: - /* On-chip level shifting via PBIAS0/PBIAS1 */ - mmc_slot(host).set_power = omap_hsmmc_1_set_power; - mmc_slot(host).set_sleep = omap_hsmmc_1_set_sleep; - break; - case OMAP_MMC2_DEVID: - case OMAP_MMC3_DEVID: - case OMAP_MMC5_DEVID: - /* Off-chip level shifting, or none */ - mmc_slot(host).set_power = omap_hsmmc_235_set_power; - mmc_slot(host).set_sleep = omap_hsmmc_235_set_sleep; - break; - case OMAP_MMC4_DEVID: - mmc_slot(host).set_power = omap_hsmmc_4_set_power; - mmc_slot(host).set_sleep = omap_hsmmc_4_set_sleep; - default: - pr_err("MMC%d configuration not supported!\n", host->id); - return -EINVAL; - } + mmc_slot(host).set_power = omap_hsmmc_set_power; reg = regulator_get(host->dev, "vmmc"); if (IS_ERR(reg)) { dev_dbg(host->dev, "vmmc regulator missing\n"); - /* - * HACK: until fixed.c regulator is usable, - * we don't require a main regulator - * for MMC2 or MMC3 - */ - if (host->id == OMAP_MMC1_DEVID) { - ret = PTR_ERR(reg); - goto err; - } } else { host->vcc = reg; ocr_value = mmc_regulator_get_ocrmask(reg); @@ -428,8 +311,8 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) mmc_slot(host).ocr_mask = ocr_value; } else { if (!(mmc_slot(host).ocr_mask & ocr_value)) { - pr_err("MMC%d ocrmask %x is not supported\n", - host->id, mmc_slot(host).ocr_mask); + dev_err(host->dev, "ocrmask %x is not supported\n", + mmc_slot(host).ocr_mask); mmc_slot(host).ocr_mask = 0; return -EINVAL; } @@ -462,11 +345,6 @@ static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host) } return 0; - -err: - mmc_slot(host).set_power = NULL; - mmc_slot(host).set_sleep = NULL; - return ret; } static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) @@ -474,7 +352,6 @@ static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host) regulator_put(host->vcc); regulator_put(host->vcc_aux); mmc_slot(host).set_power = NULL; - mmc_slot(host).set_sleep = NULL; } static inline int omap_hsmmc_have_reg(void) @@ -598,12 +475,12 @@ static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host) } /* Calculate divisor for the given clock frequency */ -static u16 calc_divisor(struct mmc_ios *ios) +static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios) { u16 dsor = 0; if (ios->clock) { - dsor = DIV_ROUND_UP(OMAP_MMC_MASTER_CLOCK, ios->clock); + dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock); if (dsor > 250) dsor = 250; } @@ -623,7 +500,7 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) regval = OMAP_HSMMC_READ(host->base, SYSCTL); regval = regval & ~(CLKD_MASK | DTO_MASK); - regval = regval | (calc_divisor(ios) << 6) | (DTO << 16); + regval = regval | (calc_divisor(host, ios) << 6) | (DTO << 16); OMAP_HSMMC_WRITE(host->base, SYSCTL, regval); OMAP_HSMMC_WRITE(host->base, SYSCTL, OMAP_HSMMC_READ(host->base, SYSCTL) | ICE); @@ -713,7 +590,7 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) OMAP_HSMMC_WRITE(host->base, SYSCONFIG, OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE); - if (host->id == OMAP_MMC1_DEVID) { + if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { if (host->power_mode != MMC_POWER_OFF && (1 << ios->vdd) <= MMC_VDD_23_24) hctl = SDVS18; @@ -1264,14 +1141,14 @@ static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host) host->reqs_blocked = 0; if (mmc_slot(host).get_cover_state(host->dev, host->slot_id)) { if (host->protect_card) { - pr_info("%s: cover is closed, " + dev_info(host->dev, "%s: cover is closed, " "card is now accessible\n", mmc_hostname(host->mmc)); host->protect_card = 0; } } else { if (!host->protect_card) { - pr_info("%s: cover is open, " + dev_info(host->dev, "%s: cover is open, " "card is now inaccessible\n", mmc_hostname(host->mmc)); host->protect_card = 1; @@ -1280,17 +1157,16 @@ static void omap_hsmmc_protect_card(struct omap_hsmmc_host *host) } /* - * Work Item to notify the core about card insertion/removal + * irq handler to notify the core about card insertion/removal */ -static void omap_hsmmc_detect(struct work_struct *work) +static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id) { - struct omap_hsmmc_host *host = - container_of(work, struct omap_hsmmc_host, mmc_carddetect_work); + struct omap_hsmmc_host *host = dev_id; struct omap_mmc_slot_data *slot = &mmc_slot(host); int carddetect; if (host->suspended) - return; + return IRQ_HANDLED; sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch"); @@ -1305,19 +1181,6 @@ static void omap_hsmmc_detect(struct work_struct *work) mmc_detect_change(host->mmc, (HZ * 200) / 1000); else mmc_detect_change(host->mmc, (HZ * 50) / 1000); -} - -/* - * ISR for handling card insertion and removal - */ -static irqreturn_t omap_hsmmc_cd_handler(int irq, void *dev_id) -{ - struct omap_hsmmc_host *host = (struct omap_hsmmc_host *)dev_id; - - if (host->suspended) - return IRQ_HANDLED; - schedule_work(&host->mmc_carddetect_work); - return IRQ_HANDLED; } @@ -1422,7 +1285,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host, if (!next && data->host_cookie && data->host_cookie != host->next_data.cookie) { - pr_warning("[%s] invalid cookie: data->host_cookie %d" + dev_warn(host->dev, "[%s] invalid cookie: data->host_cookie %d" " host->next_data.cookie %d\n", __func__, data->host_cookie, host->next_data.cookie); data->host_cookie = 0; @@ -1680,7 +1543,13 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * of external transceiver; but they all handle 1.8V. */ if ((OMAP_HSMMC_READ(host->base, HCTL) & SDVSDET) && - (ios->vdd == DUAL_VOLT_OCR_BIT)) { + (ios->vdd == DUAL_VOLT_OCR_BIT) && + /* + * With pbias cell programming missing, this + * can't be allowed when booting with device + * tree. + */ + (!of_have_populated_dt())) { /* * The mmc_select_voltage fn of the core does * not seem to set the power_mode to @@ -1765,7 +1634,7 @@ static int omap_hsmmc_enable_fclk(struct mmc_host *mmc) return 0; } -static int omap_hsmmc_disable_fclk(struct mmc_host *mmc, int lazy) +static int omap_hsmmc_disable_fclk(struct mmc_host *mmc) { struct omap_hsmmc_host *host = mmc_priv(mmc); @@ -1799,15 +1668,8 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data) if (host->pdata->get_context_loss_count) context_loss = host->pdata->get_context_loss_count(host->dev); - seq_printf(s, "mmc%d:\n" - " enabled:\t%d\n" - " dpm_state:\t%d\n" - " nesting_cnt:\t%d\n" - " ctx_loss:\t%d:%d\n" - "\nregs:\n", - mmc->index, mmc->enabled ? 1 : 0, - host->dpm_state, mmc->nesting_cnt, - host->context_loss, context_loss); + seq_printf(s, "mmc%d:\n ctx_loss:\t%d:%d\n\nregs:\n", + mmc->index, host->context_loss, context_loss); if (host->suspended) { seq_printf(s, "host suspended, can't read registers\n"); @@ -1864,13 +1726,82 @@ static void omap_hsmmc_debugfs(struct mmc_host *mmc) #endif -static int __init omap_hsmmc_probe(struct platform_device *pdev) +#ifdef CONFIG_OF +static u16 omap4_reg_offset = 0x100; + +static const struct of_device_id omap_mmc_of_match[] = { + { + .compatible = "ti,omap2-hsmmc", + }, + { + .compatible = "ti,omap3-hsmmc", + }, + { + .compatible = "ti,omap4-hsmmc", + .data = &omap4_reg_offset, + }, + {}, +} +MODULE_DEVICE_TABLE(of, omap_mmc_of_match); + +static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) +{ + struct omap_mmc_platform_data *pdata; + struct device_node *np = dev->of_node; + u32 bus_width; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; /* out of memory */ + + if (of_find_property(np, "ti,dual-volt", NULL)) + pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT; + + /* This driver only supports 1 slot */ + pdata->nr_slots = 1; + pdata->slots[0].switch_pin = of_get_named_gpio(np, "cd-gpios", 0); + pdata->slots[0].gpio_wp = of_get_named_gpio(np, "wp-gpios", 0); + + if (of_find_property(np, "ti,non-removable", NULL)) { + pdata->slots[0].nonremovable = true; + pdata->slots[0].no_regulator_off_init = true; + } + of_property_read_u32(np, "ti,bus-width", &bus_width); + if (bus_width == 4) + pdata->slots[0].caps |= MMC_CAP_4_BIT_DATA; + else if (bus_width == 8) + pdata->slots[0].caps |= MMC_CAP_8_BIT_DATA; + + if (of_find_property(np, "ti,needs-special-reset", NULL)) + pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET; + + return pdata; +} +#else +static inline struct omap_mmc_platform_data + *of_get_hsmmc_pdata(struct device *dev) +{ + return NULL; +} +#endif + +static int __devinit omap_hsmmc_probe(struct platform_device *pdev) { struct omap_mmc_platform_data *pdata = pdev->dev.platform_data; struct mmc_host *mmc; struct omap_hsmmc_host *host = NULL; struct resource *res; int ret, irq; + const struct of_device_id *match; + + match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev); + if (match) { + pdata = of_get_hsmmc_pdata(&pdev->dev); + if (match->data) { + u16 *offsetp = match->data; + pdata->reg_offset = *offsetp; + } + } if (pdata == NULL) { dev_err(&pdev->dev, "Platform Data is missing\n"); @@ -1887,8 +1818,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) if (res == NULL || irq < 0) return -ENXIO; - res->start += pdata->reg_offset; - res->end += pdata->reg_offset; res = request_mem_region(res->start, resource_size(res), pdev->name); if (res == NULL) return -EBUSY; @@ -1911,15 +1840,13 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) host->dev->dma_mask = &pdata->dma_mask; host->dma_ch = -1; host->irq = irq; - host->id = pdev->id; host->slot_id = 0; - host->mapbase = res->start; + host->mapbase = res->start + pdata->reg_offset; host->base = ioremap(host->mapbase, SZ_4K); host->power_mode = MMC_POWER_OFF; host->next_data.cookie = 1; platform_set_drvdata(pdev, host); - INIT_WORK(&host->mmc_carddetect_work, omap_hsmmc_detect); mmc->ops = &omap_hsmmc_ops; @@ -1930,8 +1857,12 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) if (mmc_slot(host).vcc_aux_disable_is_sleep) mmc_slot(host).no_off = 1; - mmc->f_min = OMAP_MMC_MIN_CLOCK; - mmc->f_max = OMAP_MMC_MAX_CLOCK; + mmc->f_min = OMAP_MMC_MIN_CLOCK; + + if (pdata->max_freq > 0) + mmc->f_max = pdata->max_freq; + else + mmc->f_max = OMAP_MMC_MAX_CLOCK; spin_lock_init(&host->irq_lock); @@ -1942,9 +1873,6 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) goto err1; } - omap_hsmmc_context_save(host); - - mmc->caps |= MMC_CAP_DISABLE; if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) { dev_info(&pdev->dev, "multiblock reads disabled due to 35xx erratum 2.1.1.128; MMC read performance may suffer\n"); mmc->caps2 |= MMC_CAP2_NO_MULTI_READ; @@ -1955,6 +1883,8 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) pm_runtime_set_autosuspend_delay(host->dev, MMC_AUTOSUSPEND_DELAY); pm_runtime_use_autosuspend(host->dev); + omap_hsmmc_context_save(host); + if (cpu_is_omap2430()) { host->dbclk = clk_get(&pdev->dev, "mmchsdb_fck"); /* @@ -1995,32 +1925,19 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) omap_hsmmc_conf_bus_power(host); - /* Select DMA lines */ - switch (host->id) { - case OMAP_MMC1_DEVID: - host->dma_line_tx = OMAP24XX_DMA_MMC1_TX; - host->dma_line_rx = OMAP24XX_DMA_MMC1_RX; - break; - case OMAP_MMC2_DEVID: - host->dma_line_tx = OMAP24XX_DMA_MMC2_TX; - host->dma_line_rx = OMAP24XX_DMA_MMC2_RX; - break; - case OMAP_MMC3_DEVID: - host->dma_line_tx = OMAP34XX_DMA_MMC3_TX; - host->dma_line_rx = OMAP34XX_DMA_MMC3_RX; - break; - case OMAP_MMC4_DEVID: - host->dma_line_tx = OMAP44XX_DMA_MMC4_TX; - host->dma_line_rx = OMAP44XX_DMA_MMC4_RX; - break; - case OMAP_MMC5_DEVID: - host->dma_line_tx = OMAP44XX_DMA_MMC5_TX; - host->dma_line_rx = OMAP44XX_DMA_MMC5_RX; - break; - default: - dev_err(mmc_dev(host->mmc), "Invalid MMC id\n"); + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n"); goto err_irq; } + host->dma_line_tx = res->start; + + res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx"); + if (!res) { + dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n"); + goto err_irq; + } + host->dma_line_rx = res->start; /* Request IRQ for MMC operations */ ret = request_irq(host->irq, omap_hsmmc_irq, 0, @@ -2049,10 +1966,11 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) /* Request IRQ for card detect */ if ((mmc_slot(host).card_detect_irq)) { - ret = request_irq(mmc_slot(host).card_detect_irq, - omap_hsmmc_cd_handler, - IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, - mmc_hostname(mmc), host); + ret = request_threaded_irq(mmc_slot(host).card_detect_irq, + NULL, + omap_hsmmc_detect, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + mmc_hostname(mmc), host); if (ret) { dev_dbg(mmc_dev(host->mmc), "Unable to grab MMC CD IRQ\n"); @@ -2098,8 +2016,8 @@ err_reg: err_irq_cd_init: free_irq(host->irq, host); err_irq: - pm_runtime_mark_last_busy(host->dev); - pm_runtime_put_autosuspend(host->dev); + pm_runtime_put_sync(host->dev); + pm_runtime_disable(host->dev); clk_put(host->fclk); if (host->got_dbclk) { clk_disable(host->dbclk); @@ -2116,36 +2034,33 @@ err: return ret; } -static int omap_hsmmc_remove(struct platform_device *pdev) +static int __devexit omap_hsmmc_remove(struct platform_device *pdev) { struct omap_hsmmc_host *host = platform_get_drvdata(pdev); struct resource *res; - if (host) { - pm_runtime_get_sync(host->dev); - mmc_remove_host(host->mmc); - if (host->use_reg) - omap_hsmmc_reg_put(host); - if (host->pdata->cleanup) - host->pdata->cleanup(&pdev->dev); - free_irq(host->irq, host); - if (mmc_slot(host).card_detect_irq) - free_irq(mmc_slot(host).card_detect_irq, host); - flush_work_sync(&host->mmc_carddetect_work); - - pm_runtime_put_sync(host->dev); - pm_runtime_disable(host->dev); - clk_put(host->fclk); - if (host->got_dbclk) { - clk_disable(host->dbclk); - clk_put(host->dbclk); - } + pm_runtime_get_sync(host->dev); + mmc_remove_host(host->mmc); + if (host->use_reg) + omap_hsmmc_reg_put(host); + if (host->pdata->cleanup) + host->pdata->cleanup(&pdev->dev); + free_irq(host->irq, host); + if (mmc_slot(host).card_detect_irq) + free_irq(mmc_slot(host).card_detect_irq, host); - mmc_free_host(host->mmc); - iounmap(host->base); - omap_hsmmc_gpio_free(pdev->dev.platform_data); + pm_runtime_put_sync(host->dev); + pm_runtime_disable(host->dev); + clk_put(host->fclk); + if (host->got_dbclk) { + clk_disable(host->dbclk); + clk_put(host->dbclk); } + mmc_free_host(host->mmc); + iounmap(host->base); + omap_hsmmc_gpio_free(pdev->dev.platform_data); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (res) release_mem_region(res->start, resource_size(res)); @@ -2158,50 +2073,45 @@ static int omap_hsmmc_remove(struct platform_device *pdev) static int omap_hsmmc_suspend(struct device *dev) { int ret = 0; - struct platform_device *pdev = to_platform_device(dev); - struct omap_hsmmc_host *host = platform_get_drvdata(pdev); + struct omap_hsmmc_host *host = dev_get_drvdata(dev); - if (host && host->suspended) + if (!host) return 0; - if (host) { - pm_runtime_get_sync(host->dev); - host->suspended = 1; - if (host->pdata->suspend) { - ret = host->pdata->suspend(&pdev->dev, - host->slot_id); - if (ret) { - dev_dbg(mmc_dev(host->mmc), - "Unable to handle MMC board" - " level suspend\n"); - host->suspended = 0; - return ret; - } - } - cancel_work_sync(&host->mmc_carddetect_work); - ret = mmc_suspend_host(host->mmc); + if (host && host->suspended) + return 0; + pm_runtime_get_sync(host->dev); + host->suspended = 1; + if (host->pdata->suspend) { + ret = host->pdata->suspend(dev, host->slot_id); if (ret) { + dev_dbg(dev, "Unable to handle MMC board" + " level suspend\n"); host->suspended = 0; - if (host->pdata->resume) { - ret = host->pdata->resume(&pdev->dev, - host->slot_id); - if (ret) - dev_dbg(mmc_dev(host->mmc), - "Unmask interrupt failed\n"); - } - goto err; + return ret; } + } + ret = mmc_suspend_host(host->mmc); - if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) { - omap_hsmmc_disable_irq(host); - OMAP_HSMMC_WRITE(host->base, HCTL, - OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP); + if (ret) { + host->suspended = 0; + if (host->pdata->resume) { + ret = host->pdata->resume(dev, host->slot_id); + if (ret) + dev_dbg(dev, "Unmask interrupt failed\n"); } - if (host->got_dbclk) - clk_disable(host->dbclk); + goto err; + } + if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) { + omap_hsmmc_disable_irq(host); + OMAP_HSMMC_WRITE(host->base, HCTL, + OMAP_HSMMC_READ(host->base, HCTL) & ~SDBP); } + + if (host->got_dbclk) + clk_disable(host->dbclk); err: pm_runtime_put_sync(host->dev); return ret; @@ -2211,38 +2121,37 @@ err: static int omap_hsmmc_resume(struct device *dev) { int ret = 0; - struct platform_device *pdev = to_platform_device(dev); - struct omap_hsmmc_host *host = platform_get_drvdata(pdev); + struct omap_hsmmc_host *host = dev_get_drvdata(dev); + + if (!host) + return 0; if (host && !host->suspended) return 0; - if (host) { - pm_runtime_get_sync(host->dev); + pm_runtime_get_sync(host->dev); - if (host->got_dbclk) - clk_enable(host->dbclk); + if (host->got_dbclk) + clk_enable(host->dbclk); - if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) - omap_hsmmc_conf_bus_power(host); + if (!(host->mmc->pm_flags & MMC_PM_KEEP_POWER)) + omap_hsmmc_conf_bus_power(host); - if (host->pdata->resume) { - ret = host->pdata->resume(&pdev->dev, host->slot_id); - if (ret) - dev_dbg(mmc_dev(host->mmc), - "Unmask interrupt failed\n"); - } + if (host->pdata->resume) { + ret = host->pdata->resume(dev, host->slot_id); + if (ret) + dev_dbg(dev, "Unmask interrupt failed\n"); + } - omap_hsmmc_protect_card(host); + omap_hsmmc_protect_card(host); - /* Notify the core to resume the host */ - ret = mmc_resume_host(host->mmc); - if (ret == 0) - host->suspended = 0; + /* Notify the core to resume the host */ + ret = mmc_resume_host(host->mmc); + if (ret == 0) + host->suspended = 0; - pm_runtime_mark_last_busy(host->dev); - pm_runtime_put_autosuspend(host->dev); - } + pm_runtime_mark_last_busy(host->dev); + pm_runtime_put_autosuspend(host->dev); return ret; @@ -2259,7 +2168,7 @@ static int omap_hsmmc_runtime_suspend(struct device *dev) host = platform_get_drvdata(to_platform_device(dev)); omap_hsmmc_context_save(host); - dev_dbg(mmc_dev(host->mmc), "disabled\n"); + dev_dbg(dev, "disabled\n"); return 0; } @@ -2270,7 +2179,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev) host = platform_get_drvdata(to_platform_device(dev)); omap_hsmmc_context_restore(host); - dev_dbg(mmc_dev(host->mmc), "enabled\n"); + dev_dbg(dev, "enabled\n"); return 0; } @@ -2283,29 +2192,17 @@ static struct dev_pm_ops omap_hsmmc_dev_pm_ops = { }; static struct platform_driver omap_hsmmc_driver = { - .remove = omap_hsmmc_remove, + .probe = omap_hsmmc_probe, + .remove = __devexit_p(omap_hsmmc_remove), .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, .pm = &omap_hsmmc_dev_pm_ops, + .of_match_table = of_match_ptr(omap_mmc_of_match), }, }; -static int __init omap_hsmmc_init(void) -{ - /* Register the MMC driver */ - return platform_driver_probe(&omap_hsmmc_driver, omap_hsmmc_probe); -} - -static void __exit omap_hsmmc_cleanup(void) -{ - /* Unregister MMC driver */ - platform_driver_unregister(&omap_hsmmc_driver); -} - -module_init(omap_hsmmc_init); -module_exit(omap_hsmmc_cleanup); - +module_platform_driver(omap_hsmmc_driver); MODULE_DESCRIPTION("OMAP High Speed Multimedia Card driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c index fc4356e00d46..cb2dc0e75ba7 100644 --- a/drivers/mmc/host/pxamci.c +++ b/drivers/mmc/host/pxamci.c @@ -872,18 +872,7 @@ static struct platform_driver pxamci_driver = { }, }; -static int __init pxamci_init(void) -{ - return platform_driver_register(&pxamci_driver); -} - -static void __exit pxamci_exit(void) -{ - platform_driver_unregister(&pxamci_driver); -} - -module_init(pxamci_init); -module_exit(pxamci_exit); +module_platform_driver(pxamci_driver); MODULE_DESCRIPTION("PXA Multimedia Card Interface Driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index 720f99334a7f..c3622a69f432 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -1606,7 +1606,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev) host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!host->mem) { dev_err(&pdev->dev, - "failed to get io memory region resouce.\n"); + "failed to get io memory region resource.\n"); ret = -ENOENT; goto probe_free_gpio; @@ -1630,7 +1630,7 @@ static int __devinit s3cmci_probe(struct platform_device *pdev) host->irq = platform_get_irq(pdev, 0); if (host->irq == 0) { - dev_err(&pdev->dev, "failed to get interrupt resouce.\n"); + dev_err(&pdev->dev, "failed to get interrupt resource.\n"); ret = -EINVAL; goto probe_iounmap; } @@ -1914,18 +1914,7 @@ static struct platform_driver s3cmci_driver = { .shutdown = s3cmci_shutdown, }; -static int __init s3cmci_init(void) -{ - return platform_driver_register(&s3cmci_driver); -} - -static void __exit s3cmci_exit(void) -{ - platform_driver_unregister(&s3cmci_driver); -} - -module_init(s3cmci_init); -module_exit(s3cmci_exit); +module_platform_driver(s3cmci_driver); MODULE_DESCRIPTION("Samsung S3C MMC/SD Card Interface driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c index b4257e700617..28a870804f60 100644 --- a/drivers/mmc/host/sdhci-cns3xxx.c +++ b/drivers/mmc/host/sdhci-cns3xxx.c @@ -115,17 +115,7 @@ static struct platform_driver sdhci_cns3xxx_driver = { .remove = __devexit_p(sdhci_cns3xxx_remove), }; -static int __init sdhci_cns3xxx_init(void) -{ - return platform_driver_register(&sdhci_cns3xxx_driver); -} -module_init(sdhci_cns3xxx_init); - -static void __exit sdhci_cns3xxx_exit(void) -{ - platform_driver_unregister(&sdhci_cns3xxx_driver); -} -module_exit(sdhci_cns3xxx_exit); +module_platform_driver(sdhci_cns3xxx_driver); MODULE_DESCRIPTION("SDHCI driver for CNS3xxx"); MODULE_AUTHOR("Scott Shu, " diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c index a81312c91f70..177f697b5835 100644 --- a/drivers/mmc/host/sdhci-dove.c +++ b/drivers/mmc/host/sdhci-dove.c @@ -20,6 +20,7 @@ */ #include <linux/io.h> +#include <linux/module.h> #include <linux/mmc/host.h> #include "sdhci-pltfm.h" @@ -88,17 +89,7 @@ static struct platform_driver sdhci_dove_driver = { .remove = __devexit_p(sdhci_dove_remove), }; -static int __init sdhci_dove_init(void) -{ - return platform_driver_register(&sdhci_dove_driver); -} -module_init(sdhci_dove_init); - -static void __exit sdhci_dove_exit(void) -{ - platform_driver_unregister(&sdhci_dove_driver); -} -module_exit(sdhci_dove_exit); +module_platform_driver(sdhci_dove_driver); MODULE_DESCRIPTION("SDHCI driver for Dove"); MODULE_AUTHOR("Saeed Bishara <saeed@marvell.com>, " diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 38ebc4ea259f..6193a0d7bde5 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -269,8 +269,9 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg) imx_data->scratchpad = val; return; case SDHCI_COMMAND: - if ((host->cmd->opcode == MMC_STOP_TRANSMISSION) - && (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) + if ((host->cmd->opcode == MMC_STOP_TRANSMISSION || + host->cmd->opcode == MMC_SET_BLOCK_COUNT) && + (imx_data->flags & ESDHC_FLAG_MULTIBLK_NO_INT)) val |= SDHCI_CMD_ABORTCMD; if (is_imx6q_usdhc(imx_data)) { @@ -463,7 +464,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) err = PTR_ERR(clk); goto err_clk_get; } - clk_enable(clk); + clk_prepare_enable(clk); pltfm_host->clk = clk; if (!is_imx25_esdhc(imx_data)) @@ -558,7 +559,7 @@ no_card_detect_irq: gpio_free(boarddata->wp_gpio); no_card_detect_pin: no_board_data: - clk_disable(pltfm_host->clk); + clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); err_clk_get: kfree(imx_data); @@ -585,7 +586,7 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev) gpio_free(boarddata->cd_gpio); } - clk_disable(pltfm_host->clk); + clk_disable_unprepare(pltfm_host->clk); clk_put(pltfm_host->clk); kfree(imx_data); @@ -606,17 +607,7 @@ static struct platform_driver sdhci_esdhc_imx_driver = { .remove = __devexit_p(sdhci_esdhc_imx_remove), }; -static int __init sdhci_esdhc_imx_init(void) -{ - return platform_driver_register(&sdhci_esdhc_imx_driver); -} -module_init(sdhci_esdhc_imx_init); - -static void __exit sdhci_esdhc_imx_exit(void) -{ - platform_driver_unregister(&sdhci_esdhc_imx_driver); -} -module_exit(sdhci_esdhc_imx_exit); +module_platform_driver(sdhci_esdhc_imx_driver); MODULE_DESCRIPTION("SDHCI driver for Freescale i.MX eSDHC"); MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>"); diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h index c3b08f111942..b97b2f5dafdb 100644 --- a/drivers/mmc/host/sdhci-esdhc.h +++ b/drivers/mmc/host/sdhci-esdhc.h @@ -73,7 +73,7 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock) | (div << ESDHC_DIVIDER_SHIFT) | (pre_div << ESDHC_PREDIV_SHIFT)); sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); - mdelay(100); + mdelay(1); out: host->clock = clock; } diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index 01e5f627e0f0..f8eb1fb0c921 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -1,7 +1,7 @@ /* * Freescale eSDHC controller driver. * - * Copyright (c) 2007, 2010 Freescale Semiconductor, Inc. + * Copyright (c) 2007, 2010, 2012 Freescale Semiconductor, Inc. * Copyright (c) 2009 MontaVista Software, Inc. * * Authors: Xiaobo Xie <X.Xie@freescale.com> @@ -14,6 +14,7 @@ */ #include <linux/io.h> +#include <linux/of.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/mmc/host.h> @@ -38,6 +39,23 @@ static u8 esdhc_readb(struct sdhci_host *host, int reg) int base = reg & ~0x3; int shift = (reg & 0x3) * 8; u8 ret = (in_be32(host->ioaddr + base) >> shift) & 0xff; + + /* + * "DMA select" locates at offset 0x28 in SD specification, but on + * P5020 or P3041, it locates at 0x29. + */ + if (reg == SDHCI_HOST_CONTROL) { + u32 dma_bits; + + dma_bits = in_be32(host->ioaddr + reg); + /* DMA select is 22,23 bits in Protocol Control Register */ + dma_bits = (dma_bits >> 5) & SDHCI_CTRL_DMA_MASK; + + /* fixup the result */ + ret &= ~SDHCI_CTRL_DMA_MASK; + ret |= dma_bits; + } + return ret; } @@ -56,6 +74,21 @@ static void esdhc_writew(struct sdhci_host *host, u16 val, int reg) static void esdhc_writeb(struct sdhci_host *host, u8 val, int reg) { + /* + * "DMA select" location is offset 0x28 in SD specification, but on + * P5020 or P3041, it's located at 0x29. + */ + if (reg == SDHCI_HOST_CONTROL) { + u32 dma_bits; + + /* DMA select is 22,23 bits in Protocol Control Register */ + dma_bits = (val & SDHCI_CTRL_DMA_MASK) << 5; + clrsetbits_be32(host->ioaddr + reg , SDHCI_CTRL_DMA_MASK << 5, + dma_bits); + val &= ~SDHCI_CTRL_DMA_MASK; + val |= in_be32(host->ioaddr + reg) & SDHCI_CTRL_DMA_MASK; + } + /* Prevent SDHCI core from writing reserved bits (e.g. HISPD). */ if (reg == SDHCI_HOST_CONTROL) val &= ~ESDHC_HOST_CONTROL_RES; @@ -82,6 +115,34 @@ static unsigned int esdhc_of_get_min_clock(struct sdhci_host *host) return pltfm_host->clock / 256 / 16; } +static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock) +{ + /* Workaround to reduce the clock frequency for p1010 esdhc */ + if (of_find_compatible_node(NULL, NULL, "fsl,p1010-esdhc")) { + if (clock > 20000000) + clock -= 5000000; + if (clock > 40000000) + clock -= 5000000; + } + + /* Set the clock */ + esdhc_set_clock(host, clock); +} + +#ifdef CONFIG_PM +static u32 esdhc_proctl; +static void esdhc_of_suspend(struct sdhci_host *host) +{ + esdhc_proctl = sdhci_be32bs_readl(host, SDHCI_HOST_CONTROL); +} + +static void esdhc_of_resume(struct sdhci_host *host) +{ + esdhc_of_enable_dma(host); + sdhci_be32bs_writel(host, esdhc_proctl, SDHCI_HOST_CONTROL); +} +#endif + static struct sdhci_ops sdhci_esdhc_ops = { .read_l = sdhci_be32bs_readl, .read_w = esdhc_readw, @@ -89,10 +150,14 @@ static struct sdhci_ops sdhci_esdhc_ops = { .write_l = sdhci_be32bs_writel, .write_w = esdhc_writew, .write_b = esdhc_writeb, - .set_clock = esdhc_set_clock, + .set_clock = esdhc_of_set_clock, .enable_dma = esdhc_of_enable_dma, .get_max_clock = esdhc_of_get_max_clock, .get_min_clock = esdhc_of_get_min_clock, +#ifdef CONFIG_PM + .platform_suspend = esdhc_of_suspend, + .platform_resume = esdhc_of_resume, +#endif }; static struct sdhci_pltfm_data sdhci_esdhc_pdata = { @@ -131,17 +196,7 @@ static struct platform_driver sdhci_esdhc_driver = { .remove = __devexit_p(sdhci_esdhc_remove), }; -static int __init sdhci_esdhc_init(void) -{ - return platform_driver_register(&sdhci_esdhc_driver); -} -module_init(sdhci_esdhc_init); - -static void __exit sdhci_esdhc_exit(void) -{ - platform_driver_unregister(&sdhci_esdhc_driver); -} -module_exit(sdhci_esdhc_exit); +module_platform_driver(sdhci_esdhc_driver); MODULE_DESCRIPTION("SDHCI OF driver for Freescale MPC eSDHC"); MODULE_AUTHOR("Xiaobo Xie <X.Xie@freescale.com>, " diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c index 3619adc7d9fc..0ce088ae0228 100644 --- a/drivers/mmc/host/sdhci-of-hlwd.c +++ b/drivers/mmc/host/sdhci-of-hlwd.c @@ -93,17 +93,7 @@ static struct platform_driver sdhci_hlwd_driver = { .remove = __devexit_p(sdhci_hlwd_remove), }; -static int __init sdhci_hlwd_init(void) -{ - return platform_driver_register(&sdhci_hlwd_driver); -} -module_init(sdhci_hlwd_init); - -static void __exit sdhci_hlwd_exit(void) -{ - platform_driver_unregister(&sdhci_hlwd_driver); -} -module_exit(sdhci_hlwd_exit); +module_platform_driver(sdhci_hlwd_driver); MODULE_DESCRIPTION("Nintendo Wii SDHCI OF driver"); MODULE_AUTHOR("The GameCube Linux Team, Albert Herranz"); diff --git a/drivers/mmc/host/sdhci-pci-data.c b/drivers/mmc/host/sdhci-pci-data.c new file mode 100644 index 000000000000..a611217769f5 --- /dev/null +++ b/drivers/mmc/host/sdhci-pci-data.c @@ -0,0 +1,5 @@ +#include <linux/module.h> +#include <linux/mmc/sdhci-pci-data.h> + +struct sdhci_pci_data *(*sdhci_pci_get_data)(struct pci_dev *pdev, int slotno); +EXPORT_SYMBOL_GPL(sdhci_pci_get_data); diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c index 6878a94626bc..69ef0beae104 100644 --- a/drivers/mmc/host/sdhci-pci.c +++ b/drivers/mmc/host/sdhci-pci.c @@ -23,12 +23,18 @@ #include <linux/scatterlist.h> #include <linux/io.h> #include <linux/gpio.h> -#include <linux/sfi.h> #include <linux/pm_runtime.h> +#include <linux/mmc/sdhci-pci-data.h> #include "sdhci.h" /* + * PCI device IDs + */ +#define PCI_DEVICE_ID_INTEL_PCH_SDIO0 0x8809 +#define PCI_DEVICE_ID_INTEL_PCH_SDIO1 0x880a + +/* * PCI registers */ @@ -47,6 +53,7 @@ struct sdhci_pci_slot; struct sdhci_pci_fixes { unsigned int quirks; + unsigned int quirks2; bool allow_runtime_pm; int (*probe) (struct sdhci_pci_chip *); @@ -61,6 +68,7 @@ struct sdhci_pci_fixes { struct sdhci_pci_slot { struct sdhci_pci_chip *chip; struct sdhci_host *host; + struct sdhci_pci_data *data; int pci_bar; int rst_n_gpio; @@ -72,6 +80,7 @@ struct sdhci_pci_chip { struct pci_dev *pdev; unsigned int quirks; + unsigned int quirks2; bool allow_runtime_pm; const struct sdhci_pci_fixes *fixes; @@ -171,32 +180,15 @@ static int mrst_hc_probe(struct sdhci_pci_chip *chip) return 0; } -/* Medfield eMMC hardware reset GPIOs */ -static int mfd_emmc0_rst_gpio = -EINVAL; -static int mfd_emmc1_rst_gpio = -EINVAL; - -static int mfd_emmc_gpio_parse(struct sfi_table_header *table) +static int pch_hc_probe_slot(struct sdhci_pci_slot *slot) { - struct sfi_table_simple *sb = (struct sfi_table_simple *)table; - struct sfi_gpio_table_entry *entry; - int i, num; - - num = SFI_GET_NUM_ENTRIES(sb, struct sfi_gpio_table_entry); - entry = (struct sfi_gpio_table_entry *)sb->pentry; - - for (i = 0; i < num; i++, entry++) { - if (!strncmp(entry->pin_name, "emmc0_rst", SFI_NAME_LEN)) - mfd_emmc0_rst_gpio = entry->pin_no; - else if (!strncmp(entry->pin_name, "emmc1_rst", SFI_NAME_LEN)) - mfd_emmc1_rst_gpio = entry->pin_no; - } - + slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA; return 0; } #ifdef CONFIG_PM_RUNTIME -static irqreturn_t mfd_sd_cd(int irq, void *dev_id) +static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id) { struct sdhci_pci_slot *slot = dev_id; struct sdhci_host *host = slot->host; @@ -205,15 +197,16 @@ static irqreturn_t mfd_sd_cd(int irq, void *dev_id) return IRQ_HANDLED; } -#define MFLD_SD_CD_PIN 69 - -static int mfd_sd_probe_slot(struct sdhci_pci_slot *slot) +static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) { - int err, irq, gpio = MFLD_SD_CD_PIN; + int err, irq, gpio = slot->cd_gpio; slot->cd_gpio = -EINVAL; slot->cd_irq = -EINVAL; + if (!gpio_is_valid(gpio)) + return; + err = gpio_request(gpio, "sd_cd"); if (err < 0) goto out; @@ -226,72 +219,54 @@ static int mfd_sd_probe_slot(struct sdhci_pci_slot *slot) if (irq < 0) goto out_free; - err = request_irq(irq, mfd_sd_cd, IRQF_TRIGGER_RISING | + err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, "sd_cd", slot); if (err) goto out_free; slot->cd_gpio = gpio; slot->cd_irq = irq; - slot->host->quirks2 |= SDHCI_QUIRK2_OWN_CARD_DETECTION; - return 0; + return; out_free: gpio_free(gpio); out: dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n"); - return 0; } -static void mfd_sd_remove_slot(struct sdhci_pci_slot *slot, int dead) +static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) { if (slot->cd_irq >= 0) free_irq(slot->cd_irq, slot); - gpio_free(slot->cd_gpio); + if (gpio_is_valid(slot->cd_gpio)) + gpio_free(slot->cd_gpio); } #else -#define mfd_sd_probe_slot NULL -#define mfd_sd_remove_slot NULL +static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot) +{ +} + +static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot) +{ +} #endif static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot) { - const char *name = NULL; - int gpio = -EINVAL; - - sfi_table_parse(SFI_SIG_GPIO, NULL, NULL, mfd_emmc_gpio_parse); - - switch (slot->chip->pdev->device) { - case PCI_DEVICE_ID_INTEL_MFD_EMMC0: - gpio = mfd_emmc0_rst_gpio; - name = "eMMC0_reset"; - break; - case PCI_DEVICE_ID_INTEL_MFD_EMMC1: - gpio = mfd_emmc1_rst_gpio; - name = "eMMC1_reset"; - break; - } - - if (!gpio_request(gpio, name)) { - gpio_direction_output(gpio, 1); - slot->rst_n_gpio = gpio; - slot->host->mmc->caps |= MMC_CAP_HW_RESET; - } - slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE; - - slot->host->mmc->caps2 = MMC_CAP2_BOOTPART_NOACC; - + slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC | + MMC_CAP2_HC_ERASE_SZ; return 0; } -static void mfd_emmc_remove_slot(struct sdhci_pci_slot *slot, int dead) +static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot) { - gpio_free(slot->rst_n_gpio); + slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE; + return 0; } static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = { @@ -307,20 +282,24 @@ static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = { static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .allow_runtime_pm = true, - .probe_slot = mfd_sd_probe_slot, - .remove_slot = mfd_sd_remove_slot, }; static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, + .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON, .allow_runtime_pm = true, + .probe_slot = mfd_sdio_probe_slot, }; static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .allow_runtime_pm = true, .probe_slot = mfd_emmc_probe_slot, - .remove_slot = mfd_emmc_remove_slot, +}; + +static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = { + .quirks = SDHCI_QUIRK_BROKEN_ADMA, + .probe_slot = pch_hc_probe_slot, }; /* O2Micro extra registers */ @@ -859,6 +838,22 @@ static const struct pci_device_id pci_ids[] __devinitdata = { }, { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio, + }, + + { + .vendor = PCI_VENDOR_ID_INTEL, + .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio, + }, + + { .vendor = PCI_VENDOR_ID_O2, .device = PCI_DEVICE_ID_O2_8120, .subvendor = PCI_ANY_ID, @@ -1012,11 +1007,8 @@ static int sdhci_pci_suspend(struct device *dev) ret = sdhci_suspend_host(slot->host); - if (ret) { - for (i--; i >= 0; i--) - sdhci_resume_host(chip->slots[i]->host); - return ret; - } + if (ret) + goto err_pci_suspend; slot_pm_flags = slot->host->mmc->pm_flags; if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ) @@ -1027,11 +1019,8 @@ static int sdhci_pci_suspend(struct device *dev) if (chip->fixes && chip->fixes->suspend) { ret = chip->fixes->suspend(chip); - if (ret) { - for (i = chip->num_slots - 1; i >= 0; i--) - sdhci_resume_host(chip->slots[i]->host); - return ret; - } + if (ret) + goto err_pci_suspend; } pci_save_state(pdev); @@ -1048,6 +1037,11 @@ static int sdhci_pci_suspend(struct device *dev) } return 0; + +err_pci_suspend: + while (--i >= 0) + sdhci_resume_host(chip->slots[i]->host); + return ret; } static int sdhci_pci_resume(struct device *dev) @@ -1113,23 +1107,22 @@ static int sdhci_pci_runtime_suspend(struct device *dev) ret = sdhci_runtime_suspend_host(slot->host); - if (ret) { - for (i--; i >= 0; i--) - sdhci_runtime_resume_host(chip->slots[i]->host); - return ret; - } + if (ret) + goto err_pci_runtime_suspend; } if (chip->fixes && chip->fixes->suspend) { ret = chip->fixes->suspend(chip); - if (ret) { - for (i = chip->num_slots - 1; i >= 0; i--) - sdhci_runtime_resume_host(chip->slots[i]->host); - return ret; - } + if (ret) + goto err_pci_runtime_suspend; } return 0; + +err_pci_runtime_suspend: + while (--i >= 0) + sdhci_runtime_resume_host(chip->slots[i]->host); + return ret; } static int sdhci_pci_runtime_resume(struct device *dev) @@ -1190,11 +1183,12 @@ static const struct dev_pm_ops sdhci_pci_pm_ops = { \*****************************************************************************/ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( - struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar) + struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar, + int slotno) { struct sdhci_pci_slot *slot; struct sdhci_host *host; - int ret; + int ret, bar = first_bar + slotno; if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); @@ -1228,17 +1222,35 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( slot->host = host; slot->pci_bar = bar; slot->rst_n_gpio = -EINVAL; + slot->cd_gpio = -EINVAL; + + /* Retrieve platform data if there is any */ + if (*sdhci_pci_get_data) + slot->data = sdhci_pci_get_data(pdev, slotno); + + if (slot->data) { + if (slot->data->setup) { + ret = slot->data->setup(slot->data); + if (ret) { + dev_err(&pdev->dev, "platform setup failed\n"); + goto free; + } + } + slot->rst_n_gpio = slot->data->rst_n_gpio; + slot->cd_gpio = slot->data->cd_gpio; + } host->hw_name = "PCI"; host->ops = &sdhci_pci_ops; host->quirks = chip->quirks; + host->quirks2 = chip->quirks2; host->irq = pdev->irq; ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc)); if (ret) { dev_err(&pdev->dev, "cannot request region\n"); - goto free; + goto cleanup; } host->ioaddr = pci_ioremap_bar(pdev, bar); @@ -1254,15 +1266,30 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( goto unmap; } + if (gpio_is_valid(slot->rst_n_gpio)) { + if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) { + gpio_direction_output(slot->rst_n_gpio, 1); + slot->host->mmc->caps |= MMC_CAP_HW_RESET; + } else { + dev_warn(&pdev->dev, "failed to request rst_n_gpio\n"); + slot->rst_n_gpio = -EINVAL; + } + } + host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ; ret = sdhci_add_host(host); if (ret) goto remove; + sdhci_pci_add_own_cd(slot); + return slot; remove: + if (gpio_is_valid(slot->rst_n_gpio)) + gpio_free(slot->rst_n_gpio); + if (chip->fixes && chip->fixes->remove_slot) chip->fixes->remove_slot(slot, 0); @@ -1272,6 +1299,10 @@ unmap: release: pci_release_region(pdev, bar); +cleanup: + if (slot->data && slot->data->cleanup) + slot->data->cleanup(slot->data); + free: sdhci_free_host(host); @@ -1283,6 +1314,8 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) int dead; u32 scratch; + sdhci_pci_remove_own_cd(slot); + dead = 0; scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); if (scratch == (u32)-1) @@ -1290,9 +1323,15 @@ static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) sdhci_remove_host(slot->host, dead); + if (gpio_is_valid(slot->rst_n_gpio)) + gpio_free(slot->rst_n_gpio); + if (slot->chip->fixes && slot->chip->fixes->remove_slot) slot->chip->fixes->remove_slot(slot, dead); + if (slot->data && slot->data->cleanup) + slot->data->cleanup(slot->data); + pci_release_region(slot->chip->pdev, slot->pci_bar); sdhci_free_host(slot->host); @@ -1364,6 +1403,7 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev, chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data; if (chip->fixes) { chip->quirks = chip->fixes->quirks; + chip->quirks2 = chip->fixes->quirks2; chip->allow_runtime_pm = chip->fixes->allow_runtime_pm; } chip->num_slots = slots; @@ -1379,7 +1419,7 @@ static int __devinit sdhci_pci_probe(struct pci_dev *pdev, slots = chip->num_slots; /* Quirk may have changed this */ for (i = 0; i < slots; i++) { - slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i); + slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i); if (IS_ERR(slot)) { for (i--; i >= 0; i--) sdhci_pci_remove_slot(chip->slots[i]); diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index 03970bcb3495..c5c2a48bdd94 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -2,7 +2,7 @@ * sdhci-pltfm.c Support for SDHCI platform devices * Copyright (c) 2009 Intel Corporation * - * Copyright (c) 2007 Freescale Semiconductor, Inc. + * Copyright (c) 2007, 2011 Freescale Semiconductor, Inc. * Copyright (c) 2009 MontaVista Software, Inc. * * Authors: Xiaobo Xie <X.Xie@freescale.com> @@ -71,6 +71,14 @@ void sdhci_get_of_property(struct platform_device *pdev) if (sdhci_of_wp_inverted(np)) host->quirks |= SDHCI_QUIRK_INVERTED_WRITE_PROTECT; + if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) + host->quirks |= SDHCI_QUIRK_BROKEN_DMA; + + if (of_device_is_compatible(np, "fsl,p2020-esdhc") || + of_device_is_compatible(np, "fsl,p1010-esdhc") || + of_device_is_compatible(np, "fsl,mpc8536-esdhc")) + host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; + clk = of_get_property(np, "clock-frequency", &size); if (clk && size == sizeof(*clk) && *clk) pltfm_host->clock = be32_to_cpup(clk); diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c index 7a039c3cb1f1..dbb75bfbcffb 100644 --- a/drivers/mmc/host/sdhci-pxav2.c +++ b/drivers/mmc/host/sdhci-pxav2.c @@ -223,18 +223,8 @@ static struct platform_driver sdhci_pxav2_driver = { .probe = sdhci_pxav2_probe, .remove = __devexit_p(sdhci_pxav2_remove), }; -static int __init sdhci_pxav2_init(void) -{ - return platform_driver_register(&sdhci_pxav2_driver); -} - -static void __exit sdhci_pxav2_exit(void) -{ - platform_driver_unregister(&sdhci_pxav2_driver); -} -module_init(sdhci_pxav2_init); -module_exit(sdhci_pxav2_exit); +module_platform_driver(sdhci_pxav2_driver); MODULE_DESCRIPTION("SDHCI driver for pxav2"); MODULE_AUTHOR("Marvell International Ltd."); diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index 15673a7ee6a5..f29695683556 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -269,18 +269,8 @@ static struct platform_driver sdhci_pxav3_driver = { .probe = sdhci_pxav3_probe, .remove = __devexit_p(sdhci_pxav3_remove), }; -static int __init sdhci_pxav3_init(void) -{ - return platform_driver_register(&sdhci_pxav3_driver); -} - -static void __exit sdhci_pxav3_exit(void) -{ - platform_driver_unregister(&sdhci_pxav3_driver); -} -module_init(sdhci_pxav3_init); -module_exit(sdhci_pxav3_exit); +module_platform_driver(sdhci_pxav3_driver); MODULE_DESCRIPTION("SDHCI driver for pxav3"); MODULE_AUTHOR("Marvell International Ltd."); diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index 9a20d1f55bb7..55a164fcaa15 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -20,6 +20,10 @@ #include <linux/io.h> #include <linux/gpio.h> #include <linux/module.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> #include <linux/mmc/host.h> @@ -53,6 +57,18 @@ struct sdhci_s3c { struct clk *clk_bus[MAX_BUS_CLK]; }; +/** + * struct sdhci_s3c_driver_data - S3C SDHCI platform specific driver data + * @sdhci_quirks: sdhci host specific quirks. + * + * Specifies platform specific configuration of sdhci controller. + * Note: A structure for driver specific platform data is used for future + * expansion of its usage. + */ +struct sdhci_s3c_drv_data { + unsigned int sdhci_quirks; +}; + static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host) { return sdhci_priv(host); @@ -80,7 +96,7 @@ static void sdhci_s3c_check_sclk(struct sdhci_host *host) tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK; tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT; - writel(tmp, host->ioaddr + 0x80); + writel(tmp, host->ioaddr + S3C_SDHCI_CONTROL2); } } @@ -132,10 +148,10 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost, return UINT_MAX; /* - * Clock divider's step is different as 1 from that of host controller - * when 'clk_type' is S3C_SDHCI_CLK_DIV_EXTERNAL. + * If controller uses a non-standard clock division, find the best clock + * speed possible with selected clock source and skip the division. */ - if (ourhost->pdata->clk_type) { + if (ourhost->host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) { rate = clk_round_rate(clksrc, wanted); return wanted - rate; } @@ -272,6 +288,8 @@ static unsigned int sdhci_cmu_get_min_clock(struct sdhci_host *host) static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) { struct sdhci_s3c *ourhost = to_s3c(host); + unsigned long timeout; + u16 clk = 0; /* don't bother if the clock is going off */ if (clock == 0) @@ -282,6 +300,25 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock) clk_set_rate(ourhost->clk_bus[ourhost->cur_clk], clock); host->clock = clock; + + clk = SDHCI_CLOCK_INT_EN; + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); + + /* Wait max 20 ms */ + timeout = 20; + while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL)) + & SDHCI_CLOCK_INT_STABLE)) { + if (timeout == 0) { + printk(KERN_ERR "%s: Internal clock never " + "stabilised.\n", mmc_hostname(host->mmc)); + return; + } + timeout--; + mdelay(1); + } + + clk |= SDHCI_CLOCK_CARD_EN; + sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL); } /** @@ -382,16 +419,24 @@ static void sdhci_s3c_setup_card_detect_gpio(struct sdhci_s3c *sc) } } +static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data( + struct platform_device *pdev) +{ + return (struct sdhci_s3c_drv_data *) + platform_get_device_id(pdev)->driver_data; +} + static int __devinit sdhci_s3c_probe(struct platform_device *pdev) { - struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data; + struct s3c_sdhci_platdata *pdata; + struct sdhci_s3c_drv_data *drv_data; struct device *dev = &pdev->dev; struct sdhci_host *host; struct sdhci_s3c *sc; struct resource *res; int ret, irq, ptr, clks; - if (!pdata) { + if (!pdev->dev.platform_data) { dev_err(dev, "no device data specified\n"); return -ENOENT; } @@ -402,18 +447,20 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) return irq; } - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(dev, "no memory specified\n"); - return -ENOENT; - } - host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c)); if (IS_ERR(host)) { dev_err(dev, "sdhci_alloc_host() failed\n"); return PTR_ERR(host); } + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + ret = -ENOMEM; + goto err_io_clk; + } + memcpy(pdata, pdev->dev.platform_data, sizeof(*pdata)); + + drv_data = sdhci_s3c_get_driver_data(pdev); sc = sdhci_priv(host); sc->host = host; @@ -464,15 +511,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) goto err_no_busclks; } - sc->ioarea = request_mem_region(res->start, resource_size(res), - mmc_hostname(host->mmc)); - if (!sc->ioarea) { - dev_err(dev, "failed to reserve register area\n"); - ret = -ENXIO; - goto err_req_regs; - } - - host->ioaddr = ioremap_nocache(res->start, resource_size(res)); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + host->ioaddr = devm_request_and_ioremap(&pdev->dev, res); if (!host->ioaddr) { dev_err(dev, "failed to map registers\n"); ret = -ENXIO; @@ -491,6 +531,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) /* Setup quirks for the controller */ host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC; host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT; + if (drv_data) + host->quirks |= drv_data->sdhci_quirks; #ifndef CONFIG_MMC_SDHCI_S3C_DMA @@ -518,8 +560,16 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) if (pdata->cd_type == S3C_SDHCI_CD_PERMANENT) host->mmc->caps = MMC_CAP_NONREMOVABLE; - if (pdata->host_caps) - host->mmc->caps |= pdata->host_caps; + switch (pdata->max_width) { + case 8: + host->mmc->caps |= MMC_CAP_8_BIT_DATA; + case 4: + host->mmc->caps |= MMC_CAP_4_BIT_DATA; + break; + } + + if (pdata->pm_caps) + host->mmc->pm_caps |= pdata->pm_caps; host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR | SDHCI_QUIRK_32BIT_DMA_SIZE); @@ -531,7 +581,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) * If controller does not have internal clock divider, * we can use overriding functions instead of default. */ - if (pdata->clk_type) { + if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) { sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock; sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock; sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock; @@ -541,10 +591,20 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) if (pdata->host_caps) host->mmc->caps |= pdata->host_caps; + if (pdata->host_caps2) + host->mmc->caps2 |= pdata->host_caps2; + + pm_runtime_enable(&pdev->dev); + pm_runtime_set_autosuspend_delay(&pdev->dev, 50); + pm_runtime_use_autosuspend(&pdev->dev); + pm_suspend_ignore_children(&pdev->dev, 1); + ret = sdhci_add_host(host); if (ret) { dev_err(dev, "sdhci_add_host() failed\n"); - goto err_add_host; + pm_runtime_forbid(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + goto err_req_regs; } /* The following two methods of card detection might call @@ -558,10 +618,6 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev) return 0; - err_add_host: - release_resource(sc->ioarea); - kfree(sc->ioarea); - err_req_regs: for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) { if (sc->clk_bus[ptr]) { @@ -598,6 +654,8 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) sdhci_remove_host(host, 1); + pm_runtime_disable(&pdev->dev); + for (ptr = 0; ptr < 3; ptr++) { if (sc->clk_bus[ptr]) { clk_disable(sc->clk_bus[ptr]); @@ -607,18 +665,13 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) clk_disable(sc->clk_io); clk_put(sc->clk_io); - iounmap(host->ioaddr); - release_resource(sc->ioarea); - kfree(sc->ioarea); - sdhci_free_host(host); platform_set_drvdata(pdev, NULL); return 0; } -#ifdef CONFIG_PM - +#ifdef CONFIG_PM_SLEEP static int sdhci_s3c_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); @@ -632,10 +685,29 @@ static int sdhci_s3c_resume(struct device *dev) return sdhci_resume_host(host); } +#endif +#ifdef CONFIG_PM_RUNTIME +static int sdhci_s3c_runtime_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + + return sdhci_runtime_suspend_host(host); +} + +static int sdhci_s3c_runtime_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + + return sdhci_runtime_resume_host(host); +} +#endif + +#ifdef CONFIG_PM static const struct dev_pm_ops sdhci_s3c_pmops = { - .suspend = sdhci_s3c_suspend, - .resume = sdhci_s3c_resume, + SET_SYSTEM_SLEEP_PM_OPS(sdhci_s3c_suspend, sdhci_s3c_resume) + SET_RUNTIME_PM_OPS(sdhci_s3c_runtime_suspend, sdhci_s3c_runtime_resume, + NULL) }; #define SDHCI_S3C_PMOPS (&sdhci_s3c_pmops) @@ -644,9 +716,31 @@ static const struct dev_pm_ops sdhci_s3c_pmops = { #define SDHCI_S3C_PMOPS NULL #endif +#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212) +static struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = { + .sdhci_quirks = SDHCI_QUIRK_NONSTANDARD_CLOCK, +}; +#define EXYNOS4_SDHCI_DRV_DATA ((kernel_ulong_t)&exynos4_sdhci_drv_data) +#else +#define EXYNOS4_SDHCI_DRV_DATA ((kernel_ulong_t)NULL) +#endif + +static struct platform_device_id sdhci_s3c_driver_ids[] = { + { + .name = "s3c-sdhci", + .driver_data = (kernel_ulong_t)NULL, + }, { + .name = "exynos4-sdhci", + .driver_data = EXYNOS4_SDHCI_DRV_DATA, + }, + { } +}; +MODULE_DEVICE_TABLE(platform, sdhci_s3c_driver_ids); + static struct platform_driver sdhci_s3c_driver = { .probe = sdhci_s3c_probe, .remove = __devexit_p(sdhci_s3c_remove), + .id_table = sdhci_s3c_driver_ids, .driver = { .owner = THIS_MODULE, .name = "s3c-sdhci", @@ -654,18 +748,7 @@ static struct platform_driver sdhci_s3c_driver = { }, }; -static int __init sdhci_s3c_init(void) -{ - return platform_driver_register(&sdhci_s3c_driver); -} - -static void __exit sdhci_s3c_exit(void) -{ - platform_driver_unregister(&sdhci_s3c_driver); -} - -module_init(sdhci_s3c_init); -module_exit(sdhci_s3c_exit); +module_platform_driver(sdhci_s3c_driver); MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue"); MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c index 63cc8b6a1c9e..6dfa82e03c7e 100644 --- a/drivers/mmc/host/sdhci-spear.c +++ b/drivers/mmc/host/sdhci-spear.c @@ -21,6 +21,7 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/platform_device.h> +#include <linux/pm.h> #include <linux/slab.h> #include <linux/mmc/host.h> #include <linux/mmc/sdhci-spear.h> @@ -271,26 +272,49 @@ static int __devexit sdhci_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM +static int sdhci_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct spear_sdhci *sdhci = dev_get_platdata(dev); + int ret; + + ret = sdhci_suspend_host(host); + if (!ret) + clk_disable(sdhci->clk); + + return ret; +} + +static int sdhci_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct spear_sdhci *sdhci = dev_get_platdata(dev); + int ret; + + ret = clk_enable(sdhci->clk); + if (ret) { + dev_dbg(dev, "Resume: Error enabling clock\n"); + return ret; + } + + return sdhci_resume_host(host); +} +#endif + +static SIMPLE_DEV_PM_OPS(sdhci_pm_ops, sdhci_suspend, sdhci_resume); + static struct platform_driver sdhci_driver = { .driver = { .name = "sdhci", .owner = THIS_MODULE, + .pm = &sdhci_pm_ops, }, .probe = sdhci_probe, .remove = __devexit_p(sdhci_remove), }; -static int __init sdhci_init(void) -{ - return platform_driver_register(&sdhci_driver); -} -module_init(sdhci_init); - -static void __exit sdhci_exit(void) -{ - platform_driver_unregister(&sdhci_driver); -} -module_exit(sdhci_exit); +module_platform_driver(sdhci_driver); MODULE_DESCRIPTION("SPEAr Secure Digital Host Controller Interface driver"); MODULE_AUTHOR("Viresh Kumar <viresh.kumar@st.com>"); diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index e2e18d3f949c..53b26502f6e2 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -19,11 +19,11 @@ #include <linux/clk.h> #include <linux/io.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/gpio.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> -#include <linux/module.h> #include <asm/gpio.h> @@ -32,6 +32,19 @@ #include "sdhci-pltfm.h" +#define NVQUIRK_FORCE_SDHCI_SPEC_200 BIT(0) +#define NVQUIRK_ENABLE_BLOCK_GAP_DET BIT(1) + +struct sdhci_tegra_soc_data { + struct sdhci_pltfm_data *pdata; + u32 nvquirks; +}; + +struct sdhci_tegra { + const struct tegra_sdhci_platform_data *plat; + const struct sdhci_tegra_soc_data *soc_data; +}; + static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg) { u32 val; @@ -47,7 +60,12 @@ static u32 tegra_sdhci_readl(struct sdhci_host *host, int reg) static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg) { - if (unlikely(reg == SDHCI_HOST_VERSION)) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; + + if (unlikely((soc_data->nvquirks & NVQUIRK_FORCE_SDHCI_SPEC_200) && + (reg == SDHCI_HOST_VERSION))) { /* Erratum: Version register is invalid in HW. */ return SDHCI_SPEC_200; } @@ -57,6 +75,10 @@ static u16 tegra_sdhci_readw(struct sdhci_host *host, int reg) static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg) { + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data; + /* Seems like we're getting spurious timeout and crc errors, so * disable signalling of them. In case of real errors software * timers should take care of eventually detecting them. @@ -66,7 +88,8 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg) writel(val, host->ioaddr + reg); - if (unlikely(reg == SDHCI_INT_ENABLE)) { + if (unlikely((soc_data->nvquirks & NVQUIRK_ENABLE_BLOCK_GAP_DET) && + (reg == SDHCI_INT_ENABLE))) { /* Erratum: Must enable block gap interrupt detection */ u8 gap_ctrl = readb(host->ioaddr + SDHCI_BLOCK_GAP_CONTROL); if (val & SDHCI_INT_CARD_INT) @@ -77,10 +100,11 @@ static void tegra_sdhci_writel(struct sdhci_host *host, u32 val, int reg) } } -static unsigned int tegra_sdhci_get_ro(struct sdhci_host *sdhci) +static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host) { - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(sdhci); - struct tegra_sdhci_platform_data *plat = pltfm_host->priv; + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct tegra_sdhci_platform_data *plat = tegra_host->plat; if (!gpio_is_valid(plat->wp_gpio)) return -1; @@ -99,7 +123,8 @@ static irqreturn_t carddetect_irq(int irq, void *data) static int tegra_sdhci_8bit(struct sdhci_host *host, int bus_width) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct tegra_sdhci_platform_data *plat = pltfm_host->priv; + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct tegra_sdhci_platform_data *plat = tegra_host->plat; u32 ctrl; ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); @@ -125,16 +150,44 @@ static struct sdhci_ops tegra_sdhci_ops = { .platform_8bit_width = tegra_sdhci_8bit, }; -static struct sdhci_pltfm_data sdhci_tegra_pdata = { +#ifdef CONFIG_ARCH_TEGRA_2x_SOC +static struct sdhci_pltfm_data sdhci_tegra20_pdata = { + .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | + SDHCI_QUIRK_SINGLE_POWER_WRITE | + SDHCI_QUIRK_NO_HISPD_BIT | + SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, + .ops = &tegra_sdhci_ops, +}; + +static struct sdhci_tegra_soc_data soc_data_tegra20 = { + .pdata = &sdhci_tegra20_pdata, + .nvquirks = NVQUIRK_FORCE_SDHCI_SPEC_200 | + NVQUIRK_ENABLE_BLOCK_GAP_DET, +}; +#endif + +#ifdef CONFIG_ARCH_TEGRA_3x_SOC +static struct sdhci_pltfm_data sdhci_tegra30_pdata = { .quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL | + SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | SDHCI_QUIRK_SINGLE_POWER_WRITE | SDHCI_QUIRK_NO_HISPD_BIT | SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC, .ops = &tegra_sdhci_ops, }; +static struct sdhci_tegra_soc_data soc_data_tegra30 = { + .pdata = &sdhci_tegra30_pdata, +}; +#endif + static const struct of_device_id sdhci_tegra_dt_match[] __devinitdata = { - { .compatible = "nvidia,tegra20-sdhci", }, +#ifdef CONFIG_ARCH_TEGRA_3x_SOC + { .compatible = "nvidia,tegra30-sdhci", .data = &soc_data_tegra30 }, +#endif +#ifdef CONFIG_ARCH_TEGRA_2x_SOC + { .compatible = "nvidia,tegra20-sdhci", .data = &soc_data_tegra20 }, +#endif {} }; MODULE_DEVICE_TABLE(of, sdhci_dt_ids); @@ -165,13 +218,22 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata( static int __devinit sdhci_tegra_probe(struct platform_device *pdev) { + const struct of_device_id *match; + const struct sdhci_tegra_soc_data *soc_data; + struct sdhci_host *host; struct sdhci_pltfm_host *pltfm_host; struct tegra_sdhci_platform_data *plat; - struct sdhci_host *host; + struct sdhci_tegra *tegra_host; struct clk *clk; int rc; - host = sdhci_pltfm_init(pdev, &sdhci_tegra_pdata); + match = of_match_device(sdhci_tegra_dt_match, &pdev->dev); + if (match) + soc_data = match->data; + else + soc_data = &soc_data_tegra20; + + host = sdhci_pltfm_init(pdev, soc_data->pdata); if (IS_ERR(host)) return PTR_ERR(host); @@ -188,7 +250,17 @@ static int __devinit sdhci_tegra_probe(struct platform_device *pdev) goto err_no_plat; } - pltfm_host->priv = plat; + tegra_host = devm_kzalloc(&pdev->dev, sizeof(*tegra_host), GFP_KERNEL); + if (!tegra_host) { + dev_err(mmc_dev(host->mmc), "failed to allocate tegra_host\n"); + rc = -ENOMEM; + goto err_no_plat; + } + + tegra_host->plat = plat; + tegra_host->soc_data = soc_data; + + pltfm_host->priv = tegra_host; if (gpio_is_valid(plat->power_gpio)) { rc = gpio_request(plat->power_gpio, "sdhci_power"); @@ -284,7 +356,8 @@ static int __devexit sdhci_tegra_remove(struct platform_device *pdev) { struct sdhci_host *host = platform_get_drvdata(pdev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); - struct tegra_sdhci_platform_data *plat = pltfm_host->priv; + struct sdhci_tegra *tegra_host = pltfm_host->priv; + const struct tegra_sdhci_platform_data *plat = tegra_host->plat; int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff); sdhci_remove_host(host, dead); @@ -324,18 +397,8 @@ static struct platform_driver sdhci_tegra_driver = { .remove = __devexit_p(sdhci_tegra_remove), }; -static int __init sdhci_tegra_init(void) -{ - return platform_driver_register(&sdhci_tegra_driver); -} -module_init(sdhci_tegra_init); - -static void __exit sdhci_tegra_exit(void) -{ - platform_driver_unregister(&sdhci_tegra_driver); -} -module_exit(sdhci_tegra_exit); +module_platform_driver(sdhci_tegra_driver); MODULE_DESCRIPTION("SDHCI driver for Tegra"); -MODULE_AUTHOR(" Google, Inc."); +MODULE_AUTHOR("Google, Inc."); MODULE_LICENSE("GPL v2"); diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 19ed580f2cab..9aa77f3f04a8 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -49,7 +49,7 @@ static void sdhci_finish_data(struct sdhci_host *); static void sdhci_send_command(struct sdhci_host *, struct mmc_command *); static void sdhci_finish_command(struct sdhci_host *); -static int sdhci_execute_tuning(struct mmc_host *mmc); +static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); static void sdhci_tuning_timer(unsigned long data); #ifdef CONFIG_PM_RUNTIME @@ -146,10 +146,8 @@ static void sdhci_set_card_detection(struct sdhci_host *host, bool enable) { u32 present, irqs; - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) - return; - - if (host->quirks2 & SDHCI_QUIRK2_OWN_CARD_DETECTION) + if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || + !mmc_card_is_removable(host->mmc)) return; present = sdhci_readl(host, SDHCI_PRESENT_STATE) & @@ -214,6 +212,11 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, ier); + + if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { + if ((host->ops->enable_dma) && (mask & SDHCI_RESET_ALL)) + host->ops->enable_dma(host); + } } static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios); @@ -423,12 +426,12 @@ static void sdhci_transfer_pio(struct sdhci_host *host) static char *sdhci_kmap_atomic(struct scatterlist *sg, unsigned long *flags) { local_irq_save(*flags); - return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; + return kmap_atomic(sg_page(sg)) + sg->offset; } static void sdhci_kunmap_atomic(void *buffer, unsigned long *flags) { - kunmap_atomic(buffer, KM_BIO_SRC_IRQ); + kunmap_atomic(buffer); local_irq_restore(*flags); } @@ -1016,7 +1019,8 @@ static void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) flags |= SDHCI_CMD_INDEX; /* CMD19 is special in that the Data Present Select should be set */ - if (cmd->data || (cmd->opcode == MMC_SEND_TUNING_BLOCK)) + if (cmd->data || cmd->opcode == MMC_SEND_TUNING_BLOCK || + cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200) flags |= SDHCI_CMD_DATA; sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND); @@ -1066,12 +1070,15 @@ static void sdhci_finish_command(struct sdhci_host *host) static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { int div = 0; /* Initialized for compiler warning */ + int real_div = div, clk_mul = 1; u16 clk = 0; unsigned long timeout; - if (clock == host->clock) + if (clock && clock == host->clock) return; + host->mmc->actual_clock = 0; + if (host->ops->set_clock) { host->ops->set_clock(host, clock); if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) @@ -1109,6 +1116,8 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) * Control register. */ clk = SDHCI_PROG_CLOCK_MODE; + real_div = div; + clk_mul = host->clk_mul; div--; } } else { @@ -1122,6 +1131,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) break; } } + real_div = div; div >>= 1; } } else { @@ -1130,9 +1140,13 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock) if ((host->max_clk / div) <= clock) break; } + real_div = div; div >>= 1; } + if (real_div) + host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div; + clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT; clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN) << SDHCI_DIVIDER_HI_SHIFT; @@ -1160,7 +1174,7 @@ out: host->clock = clock; } -static void sdhci_set_power(struct sdhci_host *host, unsigned short power) +static int sdhci_set_power(struct sdhci_host *host, unsigned short power) { u8 pwr = 0; @@ -1183,13 +1197,13 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) } if (host->pwr == pwr) - return; + return -1; host->pwr = pwr; if (pwr == 0) { sdhci_writeb(host, 0, SDHCI_POWER_CONTROL); - return; + return 0; } /* @@ -1216,6 +1230,8 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power) */ if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER) mdelay(10); + + return power; } /*****************************************************************************\ @@ -1277,7 +1293,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) if ((host->flags & SDHCI_NEEDS_RETUNING) && !(present_state & (SDHCI_DOING_WRITE | SDHCI_DOING_READ))) { spin_unlock_irqrestore(&host->lock, flags); - sdhci_execute_tuning(mmc); + sdhci_execute_tuning(mmc, mrq->cmd->opcode); spin_lock_irqsave(&host->lock, flags); /* Restore original mmc_request structure */ @@ -1297,12 +1313,17 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) { unsigned long flags; + int vdd_bit = -1; u8 ctrl; spin_lock_irqsave(&host->lock, flags); - if (host->flags & SDHCI_DEVICE_DEAD) - goto out; + if (host->flags & SDHCI_DEVICE_DEAD) { + spin_unlock_irqrestore(&host->lock, flags); + if (host->vmmc && ios->power_mode == MMC_POWER_OFF) + mmc_regulator_set_ocr(host->mmc, host->vmmc, 0); + return; + } /* * Reset the chip on each power off. @@ -1316,9 +1337,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) sdhci_set_clock(host, ios->clock); if (ios->power_mode == MMC_POWER_OFF) - sdhci_set_power(host, -1); + vdd_bit = sdhci_set_power(host, -1); else - sdhci_set_power(host, ios->vdd); + vdd_bit = sdhci_set_power(host, ios->vdd); + + if (host->vmmc && vdd_bit != -1) { + spin_unlock_irqrestore(&host->lock, flags); + mmc_regulator_set_ocr(host->mmc, host->vmmc, vdd_bit); + spin_lock_irqsave(&host->lock, flags); + } if (host->ops->platform_send_init_74_clocks) host->ops->platform_send_init_74_clocks(host, ios->power_mode); @@ -1361,11 +1388,11 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) unsigned int clock; /* In case of UHS-I modes, set High Speed Enable */ - if ((ios->timing == MMC_TIMING_UHS_SDR50) || + if ((ios->timing == MMC_TIMING_MMC_HS200) || + (ios->timing == MMC_TIMING_UHS_SDR50) || (ios->timing == MMC_TIMING_UHS_SDR104) || (ios->timing == MMC_TIMING_UHS_DDR50) || - (ios->timing == MMC_TIMING_UHS_SDR25) || - (ios->timing == MMC_TIMING_UHS_SDR12)) + (ios->timing == MMC_TIMING_UHS_SDR25)) ctrl |= SDHCI_CTRL_HISPD; ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); @@ -1415,7 +1442,9 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* Select Bus Speed Mode for host */ ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; - if (ios->timing == MMC_TIMING_UHS_SDR12) + if (ios->timing == MMC_TIMING_MMC_HS200) + ctrl_2 |= SDHCI_CTRL_HS_SDR200; + else if (ios->timing == MMC_TIMING_UHS_SDR12) ctrl_2 |= SDHCI_CTRL_UHS_SDR12; else if (ios->timing == MMC_TIMING_UHS_SDR25) ctrl_2 |= SDHCI_CTRL_UHS_SDR25; @@ -1443,7 +1472,6 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios) if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS) sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA); -out: mmiowb(); spin_unlock_irqrestore(&host->lock, flags); } @@ -1663,7 +1691,7 @@ static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, return err; } -static int sdhci_execute_tuning(struct mmc_host *mmc) +static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) { struct sdhci_host *host; u16 ctrl; @@ -1671,6 +1699,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) int tuning_loop_counter = MAX_TUNING_LOOP; unsigned long timeout; int err = 0; + bool requires_tuning_nonuhs = false; host = mmc_priv(mmc); @@ -1681,13 +1710,19 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); /* - * Host Controller needs tuning only in case of SDR104 mode - * and for SDR50 mode when Use Tuning for SDR50 is set in + * The Host Controller needs tuning only in case of SDR104 mode + * and for SDR50 mode when Use Tuning for SDR50 is set in the * Capabilities register. + * If the Host Controller supports the HS200 mode then the + * tuning function has to be executed. */ + if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && + (host->flags & SDHCI_SDR50_NEEDS_TUNING || + host->flags & SDHCI_HS200_NEEDS_TUNING)) + requires_tuning_nonuhs = true; + if (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR104) || - (((ctrl & SDHCI_CTRL_UHS_MASK) == SDHCI_CTRL_UHS_SDR50) && - (host->flags & SDHCI_SDR50_NEEDS_TUNING))) + requires_tuning_nonuhs) ctrl |= SDHCI_CTRL_EXEC_TUNING; else { spin_unlock(&host->lock); @@ -1723,7 +1758,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) if (!tuning_loop_counter && !timeout) break; - cmd.opcode = MMC_SEND_TUNING_BLOCK; + cmd.opcode = opcode; cmd.arg = 0; cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; cmd.retries = 0; @@ -1738,7 +1773,17 @@ static int sdhci_execute_tuning(struct mmc_host *mmc) * block to the Host Controller. So we set the block size * to 64 here. */ - sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), SDHCI_BLOCK_SIZE); + if (cmd.opcode == MMC_SEND_TUNING_BLOCK_HS200) { + if (mmc->ios.bus_width == MMC_BUS_WIDTH_8) + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 128), + SDHCI_BLOCK_SIZE); + else if (mmc->ios.bus_width == MMC_BUS_WIDTH_4) + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), + SDHCI_BLOCK_SIZE); + } else { + sdhci_writew(host, SDHCI_MAKE_BLKSZ(7, 64), + SDHCI_BLOCK_SIZE); + } /* * The tuning block is sent by the card to the host controller. @@ -2121,12 +2166,14 @@ static void sdhci_show_adma_error(struct sdhci_host *host) { } static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) { + u32 command; BUG_ON(intmask == 0); /* CMD19 generates _only_ Buffer Read Ready interrupt */ if (intmask & SDHCI_INT_DATA_AVAIL) { - if (SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)) == - MMC_SEND_TUNING_BLOCK) { + command = SDHCI_GET_CMD(sdhci_readw(host, SDHCI_COMMAND)); + if (command == MMC_SEND_TUNING_BLOCK || + command == MMC_SEND_TUNING_BLOCK_HS200) { host->tuning_done = 1; wake_up(&host->buf_ready_int); return; @@ -2220,8 +2267,8 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) { irqreturn_t result; struct sdhci_host *host = dev_id; - u32 intmask; - int cardint = 0; + u32 intmask, unexpected = 0; + int cardint = 0, max_loops = 16; spin_lock(&host->lock); @@ -2239,6 +2286,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) goto out; } +again: DBG("*** %s got interrupt: 0x%08x\n", mmc_hostname(host->mmc), intmask); @@ -2297,19 +2345,23 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) intmask &= ~SDHCI_INT_CARD_INT; if (intmask) { - pr_err("%s: Unexpected interrupt 0x%08x.\n", - mmc_hostname(host->mmc), intmask); - sdhci_dumpregs(host); - + unexpected |= intmask; sdhci_writel(host, intmask, SDHCI_INT_STATUS); } result = IRQ_HANDLED; - mmiowb(); + intmask = sdhci_readl(host, SDHCI_INT_STATUS); + if (intmask && --max_loops) + goto again; out: spin_unlock(&host->lock); + if (unexpected) { + pr_err("%s: Unexpected interrupt 0x%08x.\n", + mmc_hostname(host->mmc), unexpected); + sdhci_dumpregs(host); + } /* * We have to delay this as it calls back into the driver. */ @@ -2330,26 +2382,36 @@ out: int sdhci_suspend_host(struct sdhci_host *host) { int ret; + bool has_tuning_timer; + + if (host->ops->platform_suspend) + host->ops->platform_suspend(host); sdhci_disable_card_detection(host); /* Disable tuning since we are suspending */ - if (host->version >= SDHCI_SPEC_300 && host->tuning_count && - host->tuning_mode == SDHCI_TUNING_MODE_1) { + has_tuning_timer = host->version >= SDHCI_SPEC_300 && + host->tuning_count && host->tuning_mode == SDHCI_TUNING_MODE_1; + if (has_tuning_timer) { + del_timer_sync(&host->tuning_timer); host->flags &= ~SDHCI_NEEDS_RETUNING; - mod_timer(&host->tuning_timer, jiffies + - host->tuning_count * HZ); } ret = mmc_suspend_host(host->mmc); - if (ret) + if (ret) { + if (has_tuning_timer) { + host->flags |= SDHCI_NEEDS_RETUNING; + mod_timer(&host->tuning_timer, jiffies + + host->tuning_count * HZ); + } + + sdhci_enable_card_detection(host); + return ret; + } free_irq(host->irq, host); - if (host->vmmc) - ret = regulator_disable(host->vmmc); - return ret; } @@ -2359,12 +2421,6 @@ int sdhci_resume_host(struct sdhci_host *host) { int ret; - if (host->vmmc) { - int ret = regulator_enable(host->vmmc); - if (ret) - return ret; - } - if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { if (host->ops->enable_dma) host->ops->enable_dma(host); @@ -2375,12 +2431,24 @@ int sdhci_resume_host(struct sdhci_host *host) if (ret) return ret; - sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); - mmiowb(); + if ((host->mmc->pm_flags & MMC_PM_KEEP_POWER) && + (host->quirks2 & SDHCI_QUIRK2_HOST_OFF_CARD_ON)) { + /* Card keeps power but host controller does not */ + sdhci_init(host, 0); + host->pwr = 0; + host->clock = 0; + sdhci_do_set_ios(host, &host->mmc->ios); + } else { + sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER)); + mmiowb(); + } ret = mmc_resume_host(host->mmc); sdhci_enable_card_detection(host); + if (host->ops->platform_resume) + host->ops->platform_resume(host); + /* Set the re-tuning expiration flag */ if ((host->version >= SDHCI_SPEC_300) && host->tuning_count && (host->tuning_mode == SDHCI_TUNING_MODE_1)) @@ -2714,8 +2782,9 @@ int sdhci_add_host(struct sdhci_host *host) mmc_card_is_removable(mmc)) mmc->caps |= MMC_CAP_NEEDS_POLL; - /* UHS-I mode(s) supported by the host controller. */ - if (host->version >= SDHCI_SPEC_300) + /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */ + if (caps[1] & (SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | + SDHCI_SUPPORT_DDR50)) mmc->caps |= MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25; /* SDR104 supports also implies SDR50 support */ @@ -2727,10 +2796,14 @@ int sdhci_add_host(struct sdhci_host *host) if (caps[1] & SDHCI_SUPPORT_DDR50) mmc->caps |= MMC_CAP_UHS_DDR50; - /* Does the host needs tuning for SDR50? */ + /* Does the host need tuning for SDR50? */ if (caps[1] & SDHCI_USE_SDR50_TUNING) host->flags |= SDHCI_SDR50_NEEDS_TUNING; + /* Does the host need tuning for HS200? */ + if (mmc->caps2 & MMC_CAP2_HS200) + host->flags |= SDHCI_HS200_NEEDS_TUNING; + /* Driver Type(s) (A, C, D) supported by the host */ if (caps[1] & SDHCI_DRIVER_TYPE_A) mmc->caps |= MMC_CAP_DRIVER_TYPE_A; @@ -2926,8 +2999,6 @@ int sdhci_add_host(struct sdhci_host *host) if (IS_ERR(host->vmmc)) { pr_info("%s: no vmmc regulator found\n", mmc_hostname(mmc)); host->vmmc = NULL; - } else { - regulator_enable(host->vmmc); } sdhci_init(host, 0); @@ -3016,10 +3087,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) tasklet_kill(&host->card_tasklet); tasklet_kill(&host->finish_tasklet); - if (host->vmmc) { - regulator_disable(host->vmmc); + if (host->vmmc) regulator_put(host->vmmc); - } kfree(host->adma_desc); kfree(host->align_buffer); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index a04d4d0c6fd2..f761f23d2a28 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -158,6 +158,7 @@ #define SDHCI_CTRL_UHS_SDR50 0x0002 #define SDHCI_CTRL_UHS_SDR104 0x0003 #define SDHCI_CTRL_UHS_DDR50 0x0004 +#define SDHCI_CTRL_HS_SDR200 0x0005 /* reserved value in SDIO spec */ #define SDHCI_CTRL_VDD_180 0x0008 #define SDHCI_CTRL_DRV_TYPE_MASK 0x0030 #define SDHCI_CTRL_DRV_TYPE_B 0x0000 @@ -274,6 +275,8 @@ struct sdhci_ops { void (*platform_reset_exit)(struct sdhci_host *host, u8 mask); int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs); void (*hw_reset)(struct sdhci_host *host); + void (*platform_suspend)(struct sdhci_host *host); + void (*platform_resume)(struct sdhci_host *host); }; #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c index d5505f3fe2a1..724b35e85a26 100644 --- a/drivers/mmc/host/sh_mmcif.c +++ b/drivers/mmc/host/sh_mmcif.c @@ -16,6 +16,33 @@ * */ +/* + * The MMCIF driver is now processing MMC requests asynchronously, according + * to the Linux MMC API requirement. + * + * The MMCIF driver processes MMC requests in up to 3 stages: command, optional + * data, and optional stop. To achieve asynchronous processing each of these + * stages is split into two halves: a top and a bottom half. The top half + * initialises the hardware, installs a timeout handler to handle completion + * timeouts, and returns. In case of the command stage this immediately returns + * control to the caller, leaving all further processing to run asynchronously. + * All further request processing is performed by the bottom halves. + * + * The bottom half further consists of a "hard" IRQ handler, an IRQ handler + * thread, a DMA completion callback, if DMA is used, a timeout work, and + * request- and stage-specific handler methods. + * + * Each bottom half run begins with either a hardware interrupt, a DMA callback + * invocation, or a timeout work run. In case of an error or a successful + * processing completion, the MMC core is informed and the request processing is + * finished. In case processing has to continue, i.e., if data has to be read + * from or written to the card, or if a stop command has to be sent, the next + * top half is called, which performs the necessary hardware handling and + * reschedules the timeout work. This returns the driver state machine into the + * bottom half waiting state. + */ + +#include <linux/bitops.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/delay.h> @@ -29,6 +56,7 @@ #include <linux/mmc/sh_mmcif.h> #include <linux/pagemap.h> #include <linux/platform_device.h> +#include <linux/pm_qos.h> #include <linux/pm_runtime.h> #include <linux/spinlock.h> #include <linux/module.h> @@ -123,6 +151,11 @@ #define MASK_MRBSYTO (1 << 1) #define MASK_MRSPTO (1 << 0) +#define MASK_START_CMD (MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR | \ + MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR | \ + MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | \ + MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO) + /* CE_HOST_STS1 */ #define STS1_CMDSEQ (1 << 31) @@ -162,9 +195,21 @@ enum mmcif_state { STATE_IOS, }; +enum mmcif_wait_for { + MMCIF_WAIT_FOR_REQUEST, + MMCIF_WAIT_FOR_CMD, + MMCIF_WAIT_FOR_MREAD, + MMCIF_WAIT_FOR_MWRITE, + MMCIF_WAIT_FOR_READ, + MMCIF_WAIT_FOR_WRITE, + MMCIF_WAIT_FOR_READ_END, + MMCIF_WAIT_FOR_WRITE_END, + MMCIF_WAIT_FOR_STOP, +}; + struct sh_mmcif_host { struct mmc_host *mmc; - struct mmc_data *data; + struct mmc_request *mrq; struct platform_device *pd; struct sh_dmae_slave dma_slave_tx; struct sh_dmae_slave dma_slave_rx; @@ -172,11 +217,17 @@ struct sh_mmcif_host { unsigned int clk; int bus_width; bool sd_error; + bool dying; long timeout; void __iomem *addr; - struct completion intr_wait; + u32 *pio_ptr; + spinlock_t lock; /* protect sh_mmcif_host::state */ enum mmcif_state state; - spinlock_t lock; + enum mmcif_wait_for wait_for; + struct delayed_work timeout_work; + size_t blocksize; + int sg_idx; + int sg_blkidx; bool power; bool card_present; @@ -202,19 +253,21 @@ static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host, static void mmcif_dma_complete(void *arg) { struct sh_mmcif_host *host = arg; + struct mmc_data *data = host->mrq->data; + dev_dbg(&host->pd->dev, "Command completed\n"); - if (WARN(!host->data, "%s: NULL data in DMA completion!\n", + if (WARN(!data, "%s: NULL data in DMA completion!\n", dev_name(&host->pd->dev))) return; - if (host->data->flags & MMC_DATA_READ) + if (data->flags & MMC_DATA_READ) dma_unmap_sg(host->chan_rx->device->dev, - host->data->sg, host->data->sg_len, + data->sg, data->sg_len, DMA_FROM_DEVICE); else dma_unmap_sg(host->chan_tx->device->dev, - host->data->sg, host->data->sg_len, + data->sg, data->sg_len, DMA_TO_DEVICE); complete(&host->dma_complete); @@ -222,18 +275,19 @@ static void mmcif_dma_complete(void *arg) static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) { - struct scatterlist *sg = host->data->sg; + struct mmc_data *data = host->mrq->data; + struct scatterlist *sg = data->sg; struct dma_async_tx_descriptor *desc = NULL; struct dma_chan *chan = host->chan_rx; dma_cookie_t cookie = -EINVAL; int ret; - ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, + ret = dma_map_sg(chan->device->dev, sg, data->sg_len, DMA_FROM_DEVICE); if (ret > 0) { host->dma_active = true; - desc = chan->device->device_prep_slave_sg(chan, sg, ret, - DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, sg, ret, + DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } if (desc) { @@ -244,7 +298,7 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) dma_async_issue_pending(chan); } dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", - __func__, host->data->sg_len, ret, cookie); + __func__, data->sg_len, ret, cookie); if (!desc) { /* DMA failed, fall back to PIO */ @@ -265,23 +319,24 @@ static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) } dev_dbg(&host->pd->dev, "%s(): desc %p, cookie %d, sg[%d]\n", __func__, - desc, cookie, host->data->sg_len); + desc, cookie, data->sg_len); } static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) { - struct scatterlist *sg = host->data->sg; + struct mmc_data *data = host->mrq->data; + struct scatterlist *sg = data->sg; struct dma_async_tx_descriptor *desc = NULL; struct dma_chan *chan = host->chan_tx; dma_cookie_t cookie = -EINVAL; int ret; - ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, + ret = dma_map_sg(chan->device->dev, sg, data->sg_len, DMA_TO_DEVICE); if (ret > 0) { host->dma_active = true; - desc = chan->device->device_prep_slave_sg(chan, sg, ret, - DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, sg, ret, + DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); } if (desc) { @@ -292,7 +347,7 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) dma_async_issue_pending(chan); } dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", - __func__, host->data->sg_len, ret, cookie); + __func__, data->sg_len, ret, cookie); if (!desc) { /* DMA failed, fall back to PIO */ @@ -399,7 +454,8 @@ static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk) sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK); else sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR & - (ilog2(__rounddown_pow_of_two(host->clk / clk)) << 16)); + ((fls(DIV_ROUND_UP(host->clk, + clk) - 1) - 1) << 16)); sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE); } @@ -421,7 +477,7 @@ static void sh_mmcif_sync_reset(struct sh_mmcif_host *host) static int sh_mmcif_error_manage(struct sh_mmcif_host *host) { u32 state1, state2; - int ret, timeout = 10000000; + int ret, timeout; host->sd_error = false; @@ -433,155 +489,212 @@ static int sh_mmcif_error_manage(struct sh_mmcif_host *host) if (state1 & STS1_CMDSEQ) { sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, CMD_CTRL_BREAK); sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, ~CMD_CTRL_BREAK); - while (1) { - timeout--; - if (timeout < 0) { - dev_err(&host->pd->dev, - "Forceed end of command sequence timeout err\n"); - return -EIO; - } + for (timeout = 10000000; timeout; timeout--) { if (!(sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1) - & STS1_CMDSEQ)) + & STS1_CMDSEQ)) break; mdelay(1); } + if (!timeout) { + dev_err(&host->pd->dev, + "Forced end of command sequence timeout err\n"); + return -EIO; + } sh_mmcif_sync_reset(host); dev_dbg(&host->pd->dev, "Forced end of command sequence\n"); return -EIO; } if (state2 & STS2_CRC_ERR) { - dev_dbg(&host->pd->dev, ": Happened CRC error\n"); + dev_dbg(&host->pd->dev, ": CRC error\n"); ret = -EIO; } else if (state2 & STS2_TIMEOUT_ERR) { - dev_dbg(&host->pd->dev, ": Happened Timeout error\n"); + dev_dbg(&host->pd->dev, ": Timeout\n"); ret = -ETIMEDOUT; } else { - dev_dbg(&host->pd->dev, ": Happened End/Index error\n"); + dev_dbg(&host->pd->dev, ": End/Index error\n"); ret = -EIO; } return ret; } -static int sh_mmcif_single_read(struct sh_mmcif_host *host, - struct mmc_request *mrq) +static bool sh_mmcif_next_block(struct sh_mmcif_host *host, u32 *p) { - struct mmc_data *data = mrq->data; - long time; - u32 blocksize, i, *p = sg_virt(data->sg); + struct mmc_data *data = host->mrq->data; + + host->sg_blkidx += host->blocksize; + + /* data->sg->length must be a multiple of host->blocksize? */ + BUG_ON(host->sg_blkidx > data->sg->length); + + if (host->sg_blkidx == data->sg->length) { + host->sg_blkidx = 0; + if (++host->sg_idx < data->sg_len) + host->pio_ptr = sg_virt(++data->sg); + } else { + host->pio_ptr = p; + } + + if (host->sg_idx == data->sg_len) + return false; + + return true; +} + +static void sh_mmcif_single_read(struct sh_mmcif_host *host, + struct mmc_request *mrq) +{ + host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) & + BLOCK_SIZE_MASK) + 3; + + host->wait_for = MMCIF_WAIT_FOR_READ; + schedule_delayed_work(&host->timeout_work, host->timeout); /* buf read enable */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); - - blocksize = (BLOCK_SIZE_MASK & - sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3; - for (i = 0; i < blocksize / 4; i++) +} + +static bool sh_mmcif_read_block(struct sh_mmcif_host *host) +{ + struct mmc_data *data = host->mrq->data; + u32 *p = sg_virt(data->sg); + int i; + + if (host->sd_error) { + data->error = sh_mmcif_error_manage(host); + return false; + } + + for (i = 0; i < host->blocksize / 4; i++) *p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA); /* buffer read end */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFRE); - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); + host->wait_for = MMCIF_WAIT_FOR_READ_END; - return 0; + return true; } -static int sh_mmcif_multi_read(struct sh_mmcif_host *host, - struct mmc_request *mrq) +static void sh_mmcif_multi_read(struct sh_mmcif_host *host, + struct mmc_request *mrq) { struct mmc_data *data = mrq->data; - long time; - u32 blocksize, i, j, sec, *p; - - blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr, - MMCIF_CE_BLOCK_SET); - for (j = 0; j < data->sg_len; j++) { - p = sg_virt(data->sg); - for (sec = 0; sec < data->sg->length / blocksize; sec++) { - sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); - /* buf read enable */ - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); - - for (i = 0; i < blocksize / 4; i++) - *p++ = sh_mmcif_readl(host->addr, - MMCIF_CE_DATA); - } - if (j < data->sg_len - 1) - data->sg++; + + if (!data->sg_len || !data->sg->length) + return; + + host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) & + BLOCK_SIZE_MASK; + + host->wait_for = MMCIF_WAIT_FOR_MREAD; + host->sg_idx = 0; + host->sg_blkidx = 0; + host->pio_ptr = sg_virt(data->sg); + schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); +} + +static bool sh_mmcif_mread_block(struct sh_mmcif_host *host) +{ + struct mmc_data *data = host->mrq->data; + u32 *p = host->pio_ptr; + int i; + + if (host->sd_error) { + data->error = sh_mmcif_error_manage(host); + return false; } - return 0; + + BUG_ON(!data->sg->length); + + for (i = 0; i < host->blocksize / 4; i++) + *p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA); + + if (!sh_mmcif_next_block(host, p)) + return false; + + schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); + + return true; } -static int sh_mmcif_single_write(struct sh_mmcif_host *host, +static void sh_mmcif_single_write(struct sh_mmcif_host *host, struct mmc_request *mrq) { - struct mmc_data *data = mrq->data; - long time; - u32 blocksize, i, *p = sg_virt(data->sg); + host->blocksize = (sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) & + BLOCK_SIZE_MASK) + 3; - sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); + host->wait_for = MMCIF_WAIT_FOR_WRITE; + schedule_delayed_work(&host->timeout_work, host->timeout); /* buf write enable */ - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); - - blocksize = (BLOCK_SIZE_MASK & - sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3; - for (i = 0; i < blocksize / 4; i++) + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); +} + +static bool sh_mmcif_write_block(struct sh_mmcif_host *host) +{ + struct mmc_data *data = host->mrq->data; + u32 *p = sg_virt(data->sg); + int i; + + if (host->sd_error) { + data->error = sh_mmcif_error_manage(host); + return false; + } + + for (i = 0; i < host->blocksize / 4; i++) sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++); /* buffer write end */ sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE); + host->wait_for = MMCIF_WAIT_FOR_WRITE_END; - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); - - return 0; + return true; } -static int sh_mmcif_multi_write(struct sh_mmcif_host *host, - struct mmc_request *mrq) +static void sh_mmcif_multi_write(struct sh_mmcif_host *host, + struct mmc_request *mrq) { struct mmc_data *data = mrq->data; - long time; - u32 i, sec, j, blocksize, *p; - blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr, - MMCIF_CE_BLOCK_SET); + if (!data->sg_len || !data->sg->length) + return; - for (j = 0; j < data->sg_len; j++) { - p = sg_virt(data->sg); - for (sec = 0; sec < data->sg->length / blocksize; sec++) { - sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); - /* buf write enable*/ - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); + host->blocksize = sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET) & + BLOCK_SIZE_MASK; - if (time <= 0 || host->sd_error) - return sh_mmcif_error_manage(host); + host->wait_for = MMCIF_WAIT_FOR_MWRITE; + host->sg_idx = 0; + host->sg_blkidx = 0; + host->pio_ptr = sg_virt(data->sg); + schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); +} - for (i = 0; i < blocksize / 4; i++) - sh_mmcif_writel(host->addr, - MMCIF_CE_DATA, *p++); - } - if (j < data->sg_len - 1) - data->sg++; +static bool sh_mmcif_mwrite_block(struct sh_mmcif_host *host) +{ + struct mmc_data *data = host->mrq->data; + u32 *p = host->pio_ptr; + int i; + + if (host->sd_error) { + data->error = sh_mmcif_error_manage(host); + return false; } - return 0; + + BUG_ON(!data->sg->length); + + for (i = 0; i < host->blocksize / 4; i++) + sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++); + + if (!sh_mmcif_next_block(host, p)) + return false; + + schedule_delayed_work(&host->timeout_work, host->timeout); + sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); + + return true; } static void sh_mmcif_get_response(struct sh_mmcif_host *host, @@ -603,8 +716,11 @@ static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host, } static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, - struct mmc_request *mrq, struct mmc_command *cmd, u32 opc) + struct mmc_request *mrq) { + struct mmc_data *data = mrq->data; + struct mmc_command *cmd = mrq->cmd; + u32 opc = cmd->opcode; u32 tmp = 0; /* Response Type check */ @@ -631,12 +747,11 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, case MMC_SET_WRITE_PROT: case MMC_CLR_WRITE_PROT: case MMC_ERASE: - case MMC_GEN_CMD: tmp |= CMD_SET_RBSY; break; } /* WDAT / DATW */ - if (host->data) { + if (data) { tmp |= CMD_SET_WDAT; switch (host->bus_width) { case MMC_BUS_WIDTH_1: @@ -660,7 +775,7 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, if (opc == MMC_READ_MULTIPLE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) { tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN; sh_mmcif_bitset(host, MMCIF_CE_BLOCK_SET, - mrq->data->blocks << 16); + data->blocks << 16); } /* RIDXC[1:0] check bits */ if (opc == MMC_SEND_OP_COND || opc == MMC_ALL_SEND_CID || @@ -674,68 +789,59 @@ static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, opc == MMC_SEND_CSD || opc == MMC_SEND_CID) tmp |= CMD_SET_CRC7C_INTERNAL; - return opc = ((opc << 24) | tmp); + return (opc << 24) | tmp; } static int sh_mmcif_data_trans(struct sh_mmcif_host *host, - struct mmc_request *mrq, u32 opc) + struct mmc_request *mrq, u32 opc) { - int ret; - switch (opc) { case MMC_READ_MULTIPLE_BLOCK: - ret = sh_mmcif_multi_read(host, mrq); - break; + sh_mmcif_multi_read(host, mrq); + return 0; case MMC_WRITE_MULTIPLE_BLOCK: - ret = sh_mmcif_multi_write(host, mrq); - break; + sh_mmcif_multi_write(host, mrq); + return 0; case MMC_WRITE_BLOCK: - ret = sh_mmcif_single_write(host, mrq); - break; + sh_mmcif_single_write(host, mrq); + return 0; case MMC_READ_SINGLE_BLOCK: case MMC_SEND_EXT_CSD: - ret = sh_mmcif_single_read(host, mrq); - break; + sh_mmcif_single_read(host, mrq); + return 0; default: dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc); - ret = -EINVAL; - break; + return -EINVAL; } - return ret; } static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, - struct mmc_request *mrq, struct mmc_command *cmd) + struct mmc_request *mrq) { - long time; - int ret = 0, mask = 0; + struct mmc_command *cmd = mrq->cmd; u32 opc = cmd->opcode; + u32 mask; switch (opc) { - /* respons busy check */ + /* response busy check */ case MMC_SWITCH: case MMC_STOP_TRANSMISSION: case MMC_SET_WRITE_PROT: case MMC_CLR_WRITE_PROT: case MMC_ERASE: - case MMC_GEN_CMD: - mask = MASK_MRBSYE; + mask = MASK_START_CMD | MASK_MRBSYE; break; default: - mask = MASK_MCRSPE; + mask = MASK_START_CMD | MASK_MCRSPE; break; } - mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR | - MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR | - MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | - MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO; - if (host->data) { + if (mrq->data) { sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0); sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, mrq->data->blksz); } - opc = sh_mmcif_set_cmd(host, mrq, cmd, opc); + opc = sh_mmcif_set_cmd(host, mrq); sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask); @@ -744,80 +850,28 @@ static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, /* set cmd */ sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc); - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0) { - cmd->error = sh_mmcif_error_manage(host); - return; - } - if (host->sd_error) { - switch (cmd->opcode) { - case MMC_ALL_SEND_CID: - case MMC_SELECT_CARD: - case MMC_APP_CMD: - cmd->error = -ETIMEDOUT; - break; - default: - dev_dbg(&host->pd->dev, "Cmd(d'%d) err\n", - cmd->opcode); - cmd->error = sh_mmcif_error_manage(host); - break; - } - host->sd_error = false; - return; - } - if (!(cmd->flags & MMC_RSP_PRESENT)) { - cmd->error = 0; - return; - } - sh_mmcif_get_response(host, cmd); - if (host->data) { - if (!host->dma_active) { - ret = sh_mmcif_data_trans(host, mrq, cmd->opcode); - } else { - long time = - wait_for_completion_interruptible_timeout(&host->dma_complete, - host->timeout); - if (!time) - ret = -ETIMEDOUT; - else if (time < 0) - ret = time; - sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, - BUF_ACC_DMAREN | BUF_ACC_DMAWEN); - host->dma_active = false; - } - if (ret < 0) - mrq->data->bytes_xfered = 0; - else - mrq->data->bytes_xfered = - mrq->data->blocks * mrq->data->blksz; - } - cmd->error = ret; + host->wait_for = MMCIF_WAIT_FOR_CMD; + schedule_delayed_work(&host->timeout_work, host->timeout); } static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host, - struct mmc_request *mrq, struct mmc_command *cmd) + struct mmc_request *mrq) { - long time; - - if (mrq->cmd->opcode == MMC_READ_MULTIPLE_BLOCK) + switch (mrq->cmd->opcode) { + case MMC_READ_MULTIPLE_BLOCK: sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE); - else if (mrq->cmd->opcode == MMC_WRITE_MULTIPLE_BLOCK) + break; + case MMC_WRITE_MULTIPLE_BLOCK: sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); - else { + break; + default: dev_err(&host->pd->dev, "unsupported stop cmd\n"); - cmd->error = sh_mmcif_error_manage(host); + mrq->stop->error = sh_mmcif_error_manage(host); return; } - time = wait_for_completion_interruptible_timeout(&host->intr_wait, - host->timeout); - if (time <= 0 || host->sd_error) { - cmd->error = sh_mmcif_error_manage(host); - return; - } - sh_mmcif_get_cmd12response(host, cmd); - cmd->error = 0; + host->wait_for = MMCIF_WAIT_FOR_STOP; + schedule_delayed_work(&host->timeout_work, host->timeout); } static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) @@ -856,23 +910,10 @@ static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) default: break; } - host->data = mrq->data; - if (mrq->data) { - if (mrq->data->flags & MMC_DATA_READ) { - if (host->chan_rx) - sh_mmcif_start_dma_rx(host); - } else { - if (host->chan_tx) - sh_mmcif_start_dma_tx(host); - } - } - sh_mmcif_start_cmd(host, mrq, mrq->cmd); - host->data = NULL; - if (!mrq->cmd->error && mrq->stop) - sh_mmcif_stop_cmd(host, mrq, mrq->stop); - host->state = STATE_IDLE; - mmc_request_done(mmc, mrq); + host->mrq = mrq; + + sh_mmcif_start_cmd(host, mrq); } static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) @@ -947,9 +988,156 @@ static struct mmc_host_ops sh_mmcif_ops = { .get_cd = sh_mmcif_get_cd, }; -static void sh_mmcif_detect(struct mmc_host *mmc) +static bool sh_mmcif_end_cmd(struct sh_mmcif_host *host) +{ + struct mmc_command *cmd = host->mrq->cmd; + struct mmc_data *data = host->mrq->data; + long time; + + if (host->sd_error) { + switch (cmd->opcode) { + case MMC_ALL_SEND_CID: + case MMC_SELECT_CARD: + case MMC_APP_CMD: + cmd->error = -ETIMEDOUT; + host->sd_error = false; + break; + default: + cmd->error = sh_mmcif_error_manage(host); + dev_dbg(&host->pd->dev, "Cmd(d'%d) error %d\n", + cmd->opcode, cmd->error); + break; + } + return false; + } + if (!(cmd->flags & MMC_RSP_PRESENT)) { + cmd->error = 0; + return false; + } + + sh_mmcif_get_response(host, cmd); + + if (!data) + return false; + + if (data->flags & MMC_DATA_READ) { + if (host->chan_rx) + sh_mmcif_start_dma_rx(host); + } else { + if (host->chan_tx) + sh_mmcif_start_dma_tx(host); + } + + if (!host->dma_active) { + data->error = sh_mmcif_data_trans(host, host->mrq, cmd->opcode); + if (!data->error) + return true; + return false; + } + + /* Running in the IRQ thread, can sleep */ + time = wait_for_completion_interruptible_timeout(&host->dma_complete, + host->timeout); + if (host->sd_error) { + dev_err(host->mmc->parent, + "Error IRQ while waiting for DMA completion!\n"); + /* Woken up by an error IRQ: abort DMA */ + if (data->flags & MMC_DATA_READ) + dmaengine_terminate_all(host->chan_rx); + else + dmaengine_terminate_all(host->chan_tx); + data->error = sh_mmcif_error_manage(host); + } else if (!time) { + data->error = -ETIMEDOUT; + } else if (time < 0) { + data->error = time; + } + sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, + BUF_ACC_DMAREN | BUF_ACC_DMAWEN); + host->dma_active = false; + + if (data->error) + data->bytes_xfered = 0; + + return false; +} + +static irqreturn_t sh_mmcif_irqt(int irq, void *dev_id) { - mmc_detect_change(mmc, 0); + struct sh_mmcif_host *host = dev_id; + struct mmc_request *mrq = host->mrq; + struct mmc_data *data = mrq->data; + + cancel_delayed_work_sync(&host->timeout_work); + + /* + * All handlers return true, if processing continues, and false, if the + * request has to be completed - successfully or not + */ + switch (host->wait_for) { + case MMCIF_WAIT_FOR_REQUEST: + /* We're too late, the timeout has already kicked in */ + return IRQ_HANDLED; + case MMCIF_WAIT_FOR_CMD: + if (sh_mmcif_end_cmd(host)) + /* Wait for data */ + return IRQ_HANDLED; + break; + case MMCIF_WAIT_FOR_MREAD: + if (sh_mmcif_mread_block(host)) + /* Wait for more data */ + return IRQ_HANDLED; + break; + case MMCIF_WAIT_FOR_READ: + if (sh_mmcif_read_block(host)) + /* Wait for data end */ + return IRQ_HANDLED; + break; + case MMCIF_WAIT_FOR_MWRITE: + if (sh_mmcif_mwrite_block(host)) + /* Wait data to write */ + return IRQ_HANDLED; + break; + case MMCIF_WAIT_FOR_WRITE: + if (sh_mmcif_write_block(host)) + /* Wait for data end */ + return IRQ_HANDLED; + break; + case MMCIF_WAIT_FOR_STOP: + if (host->sd_error) { + mrq->stop->error = sh_mmcif_error_manage(host); + break; + } + sh_mmcif_get_cmd12response(host, mrq->stop); + mrq->stop->error = 0; + break; + case MMCIF_WAIT_FOR_READ_END: + case MMCIF_WAIT_FOR_WRITE_END: + if (host->sd_error) + data->error = sh_mmcif_error_manage(host); + break; + default: + BUG(); + } + + if (host->wait_for != MMCIF_WAIT_FOR_STOP) { + if (!mrq->cmd->error && data && !data->error) + data->bytes_xfered = + data->blocks * data->blksz; + + if (mrq->stop && !mrq->cmd->error && (!data || !data->error)) { + sh_mmcif_stop_cmd(host, mrq); + if (!mrq->stop->error) + return IRQ_HANDLED; + } + } + + host->wait_for = MMCIF_WAIT_FOR_REQUEST; + host->state = STATE_IDLE; + host->mrq = NULL; + mmc_request_done(host->mmc, mrq); + + return IRQ_HANDLED; } static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) @@ -960,7 +1148,12 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) state = sh_mmcif_readl(host->addr, MMCIF_CE_INT); - if (state & INT_RBSYE) { + if (state & INT_ERR_STS) { + /* error interrupts - process first */ + sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); + sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); + err = 1; + } else if (state & INT_RBSYE) { sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~(INT_RBSYE | INT_CRSPE)); sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE); @@ -988,11 +1181,6 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~(INT_CMD12RBE | INT_CMD12CRE)); sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); - } else if (state & INT_ERR_STS) { - /* err interrupts */ - sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); - sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); - err = 1; } else { dev_dbg(&host->pd->dev, "Unsupported interrupt: 0x%x\n", state); sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); @@ -1003,14 +1191,57 @@ static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) host->sd_error = true; dev_dbg(&host->pd->dev, "int err state = %08x\n", state); } - if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) - complete(&host->intr_wait); - else + if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) { + if (!host->dma_active) + return IRQ_WAKE_THREAD; + else if (host->sd_error) + mmcif_dma_complete(host); + } else { dev_dbg(&host->pd->dev, "Unexpected IRQ 0x%x\n", state); + } return IRQ_HANDLED; } +static void mmcif_timeout_work(struct work_struct *work) +{ + struct delayed_work *d = container_of(work, struct delayed_work, work); + struct sh_mmcif_host *host = container_of(d, struct sh_mmcif_host, timeout_work); + struct mmc_request *mrq = host->mrq; + + if (host->dying) + /* Don't run after mmc_remove_host() */ + return; + + /* + * Handle races with cancel_delayed_work(), unless + * cancel_delayed_work_sync() is used + */ + switch (host->wait_for) { + case MMCIF_WAIT_FOR_CMD: + mrq->cmd->error = sh_mmcif_error_manage(host); + break; + case MMCIF_WAIT_FOR_STOP: + mrq->stop->error = sh_mmcif_error_manage(host); + break; + case MMCIF_WAIT_FOR_MREAD: + case MMCIF_WAIT_FOR_MWRITE: + case MMCIF_WAIT_FOR_READ: + case MMCIF_WAIT_FOR_WRITE: + case MMCIF_WAIT_FOR_READ_END: + case MMCIF_WAIT_FOR_WRITE_END: + mrq->data->error = sh_mmcif_error_manage(host); + break; + default: + BUG(); + } + + host->state = STATE_IDLE; + host->wait_for = MMCIF_WAIT_FOR_REQUEST; + host->mrq = NULL; + mmc_request_done(host->mmc, mrq); +} + static int __devinit sh_mmcif_probe(struct platform_device *pdev) { int ret = 0, irq[2]; @@ -1064,18 +1295,11 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) host->clk = clk_get_rate(host->hclk); host->pd = pdev; - init_completion(&host->intr_wait); spin_lock_init(&host->lock); mmc->ops = &sh_mmcif_ops; - mmc->f_max = host->clk; - /* close to 400KHz */ - if (mmc->f_max < 51200000) - mmc->f_min = mmc->f_max / 128; - else if (mmc->f_max < 102400000) - mmc->f_min = mmc->f_max / 256; - else - mmc->f_min = mmc->f_max / 512; + mmc->f_max = host->clk / 2; + mmc->f_min = host->clk / 512; if (pd->ocr) mmc->ocr_avail = pd->ocr; mmc->caps = MMC_CAP_MMC_HIGHSPEED; @@ -1097,31 +1321,37 @@ static int __devinit sh_mmcif_probe(struct platform_device *pdev) if (ret < 0) goto clean_up2; - mmc_add_host(mmc); + INIT_DELAYED_WORK(&host->timeout_work, mmcif_timeout_work); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); - ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host); + ret = request_threaded_irq(irq[0], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:error", host); if (ret) { dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n"); goto clean_up3; } - ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host); + ret = request_threaded_irq(irq[1], sh_mmcif_intr, sh_mmcif_irqt, 0, "sh_mmc:int", host); if (ret) { - free_irq(irq[0], host); dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); - goto clean_up3; + goto clean_up4; } - sh_mmcif_detect(host->mmc); + ret = mmc_add_host(mmc); + if (ret < 0) + goto clean_up5; + + dev_pm_qos_expose_latency_limit(&pdev->dev, 100); dev_info(&pdev->dev, "driver version %s\n", DRIVER_VERSION); dev_dbg(&pdev->dev, "chip ver H'%04x\n", sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff); return ret; +clean_up5: + free_irq(irq[1], host); +clean_up4: + free_irq(irq[0], host); clean_up3: - mmc_remove_host(mmc); pm_runtime_suspend(&pdev->dev); clean_up2: pm_runtime_disable(&pdev->dev); @@ -1139,11 +1369,21 @@ static int __devexit sh_mmcif_remove(struct platform_device *pdev) struct sh_mmcif_host *host = platform_get_drvdata(pdev); int irq[2]; + host->dying = true; pm_runtime_get_sync(&pdev->dev); + dev_pm_qos_hide_latency_limit(&pdev->dev); + mmc_remove_host(host->mmc); sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); + /* + * FIXME: cancel_delayed_work(_sync)() and free_irq() race with the + * mmc_remove_host() call above. But swapping order doesn't help either + * (a query on the linux-mmc mailing list didn't bring any replies). + */ + cancel_delayed_work_sync(&host->timeout_work); + if (host->addr) iounmap(host->addr); @@ -1206,19 +1446,7 @@ static struct platform_driver sh_mmcif_driver = { }, }; -static int __init sh_mmcif_init(void) -{ - return platform_driver_register(&sh_mmcif_driver); -} - -static void __exit sh_mmcif_exit(void) -{ - platform_driver_unregister(&sh_mmcif_driver); -} - -module_init(sh_mmcif_init); -module_exit(sh_mmcif_exit); - +module_platform_driver(sh_mmcif_driver); MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c index 41ae6466bd83..934b68e9efc3 100644 --- a/drivers/mmc/host/sh_mobile_sdhi.c +++ b/drivers/mmc/host/sh_mobile_sdhi.c @@ -90,6 +90,15 @@ static int sh_mobile_sdhi_write16_hook(struct tmio_mmc_host *host, int addr) return 0; } +static void sh_mobile_sdhi_cd_wakeup(const struct platform_device *pdev) +{ + mmc_detect_change(dev_get_drvdata(&pdev->dev), msecs_to_jiffies(100)); +} + +static const struct sh_mobile_sdhi_ops sdhi_ops = { + .cd_wakeup = sh_mobile_sdhi_cd_wakeup, +}; + static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) { struct sh_mobile_sdhi *priv; @@ -109,6 +118,12 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data = &priv->mmc_data; p->pdata = mmc_data; + if (p->init) { + ret = p->init(pdev, &sdhi_ops); + if (ret) + goto einit; + } + snprintf(clk_name, sizeof(clk_name), "sdhi%d", pdev->id); priv->clk = clk_get(&pdev->dev, clk_name); if (IS_ERR(priv->clk)) { @@ -117,8 +132,6 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) goto eclkget; } - clk_enable(priv->clk); - mmc_data->hclk = clk_get_rate(priv->clk); mmc_data->set_pwr = sh_mobile_sdhi_set_pwr; mmc_data->get_cd = sh_mobile_sdhi_get_cd; @@ -129,6 +142,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) mmc_data->write16_hook = sh_mobile_sdhi_write16_hook; mmc_data->ocr_mask = p->tmio_ocr_mask; mmc_data->capabilities |= p->tmio_caps; + mmc_data->cd_gpio = p->cd_gpio; if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) { priv->param_tx.slave_id = p->dma_slave_tx; @@ -211,7 +225,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev) dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n", mmc_hostname(host->mmc), (unsigned long) - (platform_get_resource(pdev,IORESOURCE_MEM, 0)->start), + (platform_get_resource(pdev, IORESOURCE_MEM, 0)->start), mmc_data->hclk / 1000000); return ret; @@ -232,9 +246,11 @@ eirq_sdio: eirq_card_detect: tmio_mmc_host_remove(host); eprobe: - clk_disable(priv->clk); clk_put(priv->clk); eclkget: + if (p->cleanup) + p->cleanup(pdev); +einit: kfree(priv); return ret; } @@ -258,8 +274,11 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev) free_irq(irq, host); } - clk_disable(priv->clk); clk_put(priv->clk); + + if (p->cleanup) + p->cleanup(pdev); + kfree(priv); return 0; @@ -282,18 +301,7 @@ static struct platform_driver sh_mobile_sdhi_driver = { .remove = __devexit_p(sh_mobile_sdhi_remove), }; -static int __init sh_mobile_sdhi_init(void) -{ - return platform_driver_register(&sh_mobile_sdhi_driver); -} - -static void __exit sh_mobile_sdhi_exit(void) -{ - platform_driver_unregister(&sh_mobile_sdhi_driver); -} - -module_init(sh_mobile_sdhi_init); -module_exit(sh_mobile_sdhi_exit); +module_platform_driver(sh_mobile_sdhi_driver); MODULE_DESCRIPTION("SuperH Mobile SDHI driver"); MODULE_AUTHOR("Magnus Damm"); diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c index f70d04664cac..43d962829f8e 100644 --- a/drivers/mmc/host/tifm_sd.c +++ b/drivers/mmc/host/tifm_sd.c @@ -22,8 +22,8 @@ #define DRIVER_NAME "tifm_sd" #define DRIVER_VERSION "0.8" -static int no_dma = 0; -static int fixed_timeout = 0; +static bool no_dma = 0; +static bool fixed_timeout = 0; module_param(no_dma, bool, 0644); module_param(fixed_timeout, bool, 0644); @@ -118,7 +118,7 @@ static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg, unsigned char *buf; unsigned int pos = 0, val; - buf = kmap_atomic(pg, KM_BIO_DST_IRQ) + off; + buf = kmap_atomic(pg) + off; if (host->cmd_flags & DATA_CARRY) { buf[pos++] = host->bounce_buf_data[0]; host->cmd_flags &= ~DATA_CARRY; @@ -134,7 +134,7 @@ static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg, } buf[pos++] = (val >> 8) & 0xff; } - kunmap_atomic(buf - off, KM_BIO_DST_IRQ); + kunmap_atomic(buf - off); } static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, @@ -144,7 +144,7 @@ static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, unsigned char *buf; unsigned int pos = 0, val; - buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + off; + buf = kmap_atomic(pg) + off; if (host->cmd_flags & DATA_CARRY) { val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00); writel(val, sock->addr + SOCK_MMCSD_DATA); @@ -161,7 +161,7 @@ static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, val |= (buf[pos++] << 8) & 0xff00; writel(val, sock->addr + SOCK_MMCSD_DATA); } - kunmap_atomic(buf - off, KM_BIO_SRC_IRQ); + kunmap_atomic(buf - off); } static void tifm_sd_transfer_data(struct tifm_sd *host) @@ -212,13 +212,13 @@ static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off, struct page *src, unsigned int src_off, unsigned int count) { - unsigned char *src_buf = kmap_atomic(src, KM_BIO_SRC_IRQ) + src_off; - unsigned char *dst_buf = kmap_atomic(dst, KM_BIO_DST_IRQ) + dst_off; + unsigned char *src_buf = kmap_atomic(src) + src_off; + unsigned char *dst_buf = kmap_atomic(dst) + dst_off; memcpy(dst_buf, src_buf, count); - kunmap_atomic(dst_buf - dst_off, KM_BIO_DST_IRQ); - kunmap_atomic(src_buf - src_off, KM_BIO_SRC_IRQ); + kunmap_atomic(dst_buf - dst_off); + kunmap_atomic(src_buf - src_off); } static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index a4ea10242787..113ce6c9cf32 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -138,19 +138,7 @@ static struct platform_driver tmio_mmc_driver = { .resume = tmio_mmc_resume, }; - -static int __init tmio_mmc_init(void) -{ - return platform_driver_register(&tmio_mmc_driver); -} - -static void __exit tmio_mmc_exit(void) -{ - platform_driver_unregister(&tmio_mmc_driver); -} - -module_init(tmio_mmc_init); -module_exit(tmio_mmc_exit); +module_platform_driver(tmio_mmc_driver); MODULE_DESCRIPTION("Toshiba TMIO SD/MMC driver"); MODULE_AUTHOR("Ian Molton <spyro@f2s.com>"); diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index 3020f98218f0..d857f5c6e7d9 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -20,8 +20,8 @@ #include <linux/mmc/tmio.h> #include <linux/mutex.h> #include <linux/pagemap.h> -#include <linux/spinlock.h> #include <linux/scatterlist.h> +#include <linux/spinlock.h> /* Definitions for values the CTRL_SDIO_STATUS register can take. */ #define TMIO_SDIO_STAT_IOIRQ 0x0001 @@ -47,16 +47,14 @@ struct tmio_mmc_host { struct mmc_request *mrq; struct mmc_data *data; struct mmc_host *mmc; - unsigned int sdio_irq_enabled; + + /* Controller power state */ + bool power; /* Callbacks for clock / power control */ void (*set_pwr)(struct platform_device *host, int state); void (*set_clk_div)(struct platform_device *host, int state); - int pm_error; - /* recognise system-wide suspend in runtime PM methods */ - bool pm_global; - /* pio related stuff */ struct scatterlist *sg_ptr; struct scatterlist *sg_orig; @@ -86,6 +84,7 @@ struct tmio_mmc_host { spinlock_t lock; /* protect host private data */ unsigned long last_req_ts; struct mutex ios_lock; /* protect set_ios() context */ + bool native_hotplug; }; int tmio_mmc_host_probe(struct tmio_mmc_host **host, @@ -105,13 +104,13 @@ static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg, unsigned long *flags) { local_irq_save(*flags); - return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; + return kmap_atomic(sg_page(sg)) + sg->offset; } static inline void tmio_mmc_kunmap_atomic(struct scatterlist *sg, unsigned long *flags, void *virt) { - kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ); + kunmap_atomic(virt - sg->offset); local_irq_restore(*flags); } @@ -120,6 +119,7 @@ void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data); void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable); void tmio_mmc_request_dma(struct tmio_mmc_host *host, struct tmio_mmc_data *pdata); void tmio_mmc_release_dma(struct tmio_mmc_host *host); +void tmio_mmc_abort_dma(struct tmio_mmc_host *host); #else static inline void tmio_mmc_start_dma(struct tmio_mmc_host *host, struct mmc_data *data) @@ -140,6 +140,10 @@ static inline void tmio_mmc_request_dma(struct tmio_mmc_host *host, static inline void tmio_mmc_release_dma(struct tmio_mmc_host *host) { } + +static inline void tmio_mmc_abort_dma(struct tmio_mmc_host *host) +{ +} #endif #ifdef CONFIG_PM diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c index 86f259cdfcbc..fff928604859 100644 --- a/drivers/mmc/host/tmio_mmc_dma.c +++ b/drivers/mmc/host/tmio_mmc_dma.c @@ -34,6 +34,18 @@ void tmio_mmc_enable_dma(struct tmio_mmc_host *host, bool enable) #endif } +void tmio_mmc_abort_dma(struct tmio_mmc_host *host) +{ + tmio_mmc_enable_dma(host, false); + + if (host->chan_rx) + dmaengine_terminate_all(host->chan_rx); + if (host->chan_tx) + dmaengine_terminate_all(host->chan_tx); + + tmio_mmc_enable_dma(host, true); +} + static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) { struct scatterlist *sg = host->sg_ptr, *sg_tmp; @@ -76,8 +88,8 @@ static void tmio_mmc_start_dma_rx(struct tmio_mmc_host *host) ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_FROM_DEVICE); if (ret > 0) - desc = chan->device->device_prep_slave_sg(chan, sg, ret, - DMA_FROM_DEVICE, DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, sg, ret, + DMA_DEV_TO_MEM, DMA_CTRL_ACK); if (desc) { cookie = dmaengine_submit(desc); @@ -157,8 +169,8 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host) ret = dma_map_sg(chan->device->dev, sg, host->sg_len, DMA_TO_DEVICE); if (ret > 0) - desc = chan->device->device_prep_slave_sg(chan, sg, ret, - DMA_TO_DEVICE, DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, sg, ret, + DMA_MEM_TO_DEV, DMA_CTRL_ACK); if (desc) { cookie = dmaengine_submit(desc); diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c index 4208b3958069..9a7996ade58e 100644 --- a/drivers/mmc/host/tmio_mmc_pio.c +++ b/drivers/mmc/host/tmio_mmc_pio.c @@ -34,15 +34,17 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/mfd/tmio.h> +#include <linux/mmc/cd-gpio.h> #include <linux/mmc/host.h> #include <linux/mmc/tmio.h> #include <linux/module.h> #include <linux/pagemap.h> #include <linux/platform_device.h> +#include <linux/pm_qos.h> #include <linux/pm_runtime.h> #include <linux/scatterlist.h> -#include <linux/workqueue.h> #include <linux/spinlock.h> +#include <linux/workqueue.h> #include "tmio_mmc.h" @@ -126,7 +128,6 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) struct tmio_mmc_host *host = mmc_priv(mmc); if (enable) { - host->sdio_irq_enabled = 1; host->sdio_irq_mask = TMIO_SDIO_MASK_ALL & ~TMIO_SDIO_STAT_IOIRQ; sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0001); @@ -135,7 +136,6 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable) host->sdio_irq_mask = TMIO_SDIO_MASK_ALL; sd_ctrl_write16(host, CTL_SDIO_IRQ_MASK, host->sdio_irq_mask); sd_ctrl_write16(host, CTL_TRANSACTION_CTL, 0x0000); - host->sdio_irq_enabled = 0; } } @@ -246,6 +246,7 @@ static void tmio_mmc_reset_work(struct work_struct *work) /* Ready for new calls */ host->mrq = NULL; + tmio_mmc_abort_dma(host); mmc_request_done(host->mmc, mrq); } @@ -272,6 +273,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host) host->mrq = NULL; spin_unlock_irqrestore(&host->lock, flags); + if (mrq->cmd->error || (mrq->data && mrq->data->error)) + tmio_mmc_abort_dma(host); + mmc_request_done(host->mmc, mrq); } @@ -299,6 +303,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command { struct mmc_data *data = host->data; int c = cmd->opcode; + u32 irq_mask = TMIO_MASK_CMD; /* Command 12 is handled by hardware */ if (cmd->opcode == 12 && !cmd->arg) { @@ -334,7 +339,9 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command c |= TRANSFER_READ; } - tmio_mmc_enable_mmc_irqs(host, TMIO_MASK_CMD); + if (!host->native_hotplug) + irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT); + tmio_mmc_enable_mmc_irqs(host, irq_mask); /* Fire off the command */ sd_ctrl_write32(host, CTL_ARG_REG, cmd->arg); @@ -753,7 +760,7 @@ fail: static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct tmio_mmc_host *host = mmc_priv(mmc); - struct tmio_mmc_data *pdata = host->pdata; + struct device *dev = &host->pdev->dev; unsigned long flags; mutex_lock(&host->ios_lock); @@ -761,13 +768,13 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_lock_irqsave(&host->lock, flags); if (host->mrq) { if (IS_ERR(host->mrq)) { - dev_dbg(&host->pdev->dev, + dev_dbg(dev, "%s.%d: concurrent .set_ios(), clk %u, mode %u\n", current->comm, task_pid_nr(current), ios->clock, ios->power_mode); host->mrq = ERR_PTR(-EINTR); } else { - dev_dbg(&host->pdev->dev, + dev_dbg(dev, "%s.%d: CMD%u active since %lu, now %lu!\n", current->comm, task_pid_nr(current), host->mrq->cmd->opcode, host->last_req_ts, jiffies); @@ -783,13 +790,15 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) spin_unlock_irqrestore(&host->lock, flags); /* - * pdata->power == false only if COLD_CD is available, otherwise only - * in short time intervals during probing or resuming + * host->power toggles between false and true in both cases - either + * or not the controller can be runtime-suspended during inactivity. + * But if the controller has to be kept on, the runtime-pm usage_count + * is kept positive, so no suspending actually takes place. */ if (ios->power_mode == MMC_POWER_ON && ios->clock) { - if (!pdata->power) { - pm_runtime_get_sync(&host->pdev->dev); - pdata->power = true; + if (!host->power) { + pm_runtime_get_sync(dev); + host->power = true; } tmio_mmc_set_clock(host, ios->clock); /* power up SD bus */ @@ -800,10 +809,9 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } else if (ios->power_mode != MMC_POWER_UP) { if (host->set_pwr && ios->power_mode == MMC_POWER_OFF) host->set_pwr(host->pdev, 0); - if ((pdata->flags & TMIO_MMC_HAS_COLD_CD) && - pdata->power) { - pdata->power = false; - pm_runtime_put(&host->pdev->dev); + if (host->power) { + host->power = false; + pm_runtime_put(dev); } tmio_mmc_clk_stop(host); } @@ -909,12 +917,32 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, else mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; - pdata->power = false; + _host->native_hotplug = !(pdata->flags & TMIO_MMC_USE_GPIO_CD || + mmc->caps & MMC_CAP_NEEDS_POLL || + mmc->caps & MMC_CAP_NONREMOVABLE); + + _host->power = false; pm_runtime_enable(&pdev->dev); ret = pm_runtime_resume(&pdev->dev); if (ret < 0) goto pm_disable; + /* + * There are 4 different scenarios for the card detection: + * 1) an external gpio irq handles the cd (best for power savings) + * 2) internal sdhi irq handles the cd + * 3) a worker thread polls the sdhi - indicated by MMC_CAP_NEEDS_POLL + * 4) the medium is non-removable - indicated by MMC_CAP_NONREMOVABLE + * + * While we increment the runtime PM counter for all scenarios when + * the mmc core activates us by calling an appropriate set_ios(), we + * must additionally ensure that in case 2) the tmio mmc hardware stays + * additionally ensure that in case 2) the tmio mmc hardware stays + * powered on during runtime for the card detection to work. + */ + if (_host->native_hotplug) + pm_runtime_get_noresume(&pdev->dev); + tmio_mmc_clk_stop(_host); tmio_mmc_reset(_host); @@ -933,22 +961,28 @@ int __devinit tmio_mmc_host_probe(struct tmio_mmc_host **host, /* See if we also get DMA */ tmio_mmc_request_dma(_host, pdata); - /* We have to keep the device powered for its card detection to work */ - if (!(pdata->flags & TMIO_MMC_HAS_COLD_CD)) { - pdata->power = true; - pm_runtime_get_noresume(&pdev->dev); - } - mmc_add_host(mmc); + dev_pm_qos_expose_latency_limit(&pdev->dev, 100); + /* Unmask the IRQs we want to know about */ if (!_host->chan_rx) irq_mask |= TMIO_MASK_READOP; if (!_host->chan_tx) irq_mask |= TMIO_MASK_WRITEOP; + if (!_host->native_hotplug) + irq_mask &= ~(TMIO_STAT_CARD_REMOVE | TMIO_STAT_CARD_INSERT); tmio_mmc_enable_mmc_irqs(_host, irq_mask); + if (pdata->flags & TMIO_MMC_USE_GPIO_CD) { + ret = mmc_cd_gpio_request(mmc, pdata->cd_gpio); + if (ret < 0) { + tmio_mmc_host_remove(_host); + return ret; + } + } + *host = _host; return 0; @@ -966,18 +1000,22 @@ EXPORT_SYMBOL(tmio_mmc_host_probe); void tmio_mmc_host_remove(struct tmio_mmc_host *host) { struct platform_device *pdev = host->pdev; + struct tmio_mmc_data *pdata = host->pdata; + struct mmc_host *mmc = host->mmc; - /* - * We don't have to manipulate pdata->power here: if there is a card in - * the slot, the runtime PM is active and our .runtime_resume() will not - * be run. If there is no card in the slot and the platform can suspend - * the controller, the runtime PM is suspended and pdata->power == false, - * so, our .runtime_resume() will not try to detect a card in the slot. - */ - if (host->pdata->flags & TMIO_MMC_HAS_COLD_CD) + if (pdata->flags & TMIO_MMC_USE_GPIO_CD) + /* + * This means we can miss a card-eject, but this is anyway + * possible, because of delayed processing of hotplug events. + */ + mmc_cd_gpio_free(mmc); + + if (!host->native_hotplug) pm_runtime_get_sync(&pdev->dev); - mmc_remove_host(host->mmc); + dev_pm_qos_hide_latency_limit(&pdev->dev); + + mmc_remove_host(mmc); cancel_work_sync(&host->done); cancel_delayed_work_sync(&host->delayed_reset_work); tmio_mmc_release_dma(host); @@ -986,7 +1024,7 @@ void tmio_mmc_host_remove(struct tmio_mmc_host *host) pm_runtime_disable(&pdev->dev); iounmap(host->ctl); - mmc_free_host(host->mmc); + mmc_free_host(mmc); } EXPORT_SYMBOL(tmio_mmc_host_remove); @@ -1000,8 +1038,6 @@ int tmio_mmc_host_suspend(struct device *dev) if (!ret) tmio_mmc_disable_mmc_irqs(host, TMIO_MASK_ALL); - host->pm_error = pm_runtime_put_sync(dev); - return ret; } EXPORT_SYMBOL(tmio_mmc_host_suspend); @@ -1011,20 +1047,10 @@ int tmio_mmc_host_resume(struct device *dev) struct mmc_host *mmc = dev_get_drvdata(dev); struct tmio_mmc_host *host = mmc_priv(mmc); - /* The MMC core will perform the complete set up */ - host->pdata->power = false; - - host->pm_global = true; - if (!host->pm_error) - pm_runtime_get_sync(dev); - - if (host->pm_global) { - /* Runtime PM resume callback didn't run */ - tmio_mmc_reset(host); - tmio_mmc_enable_dma(host, true); - host->pm_global = false; - } + tmio_mmc_reset(host); + tmio_mmc_enable_dma(host, true); + /* The MMC core will perform the complete set up */ return mmc_resume_host(mmc); } EXPORT_SYMBOL(tmio_mmc_host_resume); @@ -1041,19 +1067,10 @@ int tmio_mmc_host_runtime_resume(struct device *dev) { struct mmc_host *mmc = dev_get_drvdata(dev); struct tmio_mmc_host *host = mmc_priv(mmc); - struct tmio_mmc_data *pdata = host->pdata; tmio_mmc_reset(host); tmio_mmc_enable_dma(host, true); - if (pdata->power) { - /* Only entered after a card-insert interrupt */ - if (!mmc->card) - tmio_mmc_set_ios(mmc, &mmc->ios); - mmc_detect_change(mmc, msecs_to_jiffies(100)); - } - host->pm_global = false; - return 0; } EXPORT_SYMBOL(tmio_mmc_host_runtime_resume); diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c index 2ec978bc32ba..3135a1a5d75d 100644 --- a/drivers/mmc/host/vub300.c +++ b/drivers/mmc/host/vub300.c @@ -223,25 +223,25 @@ enum SD_RESPONSE_TYPE { #define FUN(c) (0x000007 & (c->arg>>28)) #define REG(c) (0x01FFFF & (c->arg>>9)) -static int limit_speed_to_24_MHz; +static bool limit_speed_to_24_MHz; module_param(limit_speed_to_24_MHz, bool, 0644); MODULE_PARM_DESC(limit_speed_to_24_MHz, "Limit Max SDIO Clock Speed to 24 MHz"); -static int pad_input_to_usb_pkt; +static bool pad_input_to_usb_pkt; module_param(pad_input_to_usb_pkt, bool, 0644); MODULE_PARM_DESC(pad_input_to_usb_pkt, "Pad USB data input transfers to whole USB Packet"); -static int disable_offload_processing; +static bool disable_offload_processing; module_param(disable_offload_processing, bool, 0644); MODULE_PARM_DESC(disable_offload_processing, "Disable Offload Processing"); -static int force_1_bit_data_xfers; +static bool force_1_bit_data_xfers; module_param(force_1_bit_data_xfers, bool, 0644); MODULE_PARM_DESC(force_1_bit_data_xfers, "Force SDIO Data Transfers to 1-bit Mode"); -static int force_polling_for_irqs; +static bool force_polling_for_irqs; module_param(force_polling_for_irqs, bool, 0644); MODULE_PARM_DESC(force_polling_for_irqs, "Force Polling for SDIO interrupts"); |