diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-18 03:41:10 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-18 03:41:10 +0300 |
| commit | c07dee7348e2451bcf2f178bf0e7830268e2c31a (patch) | |
| tree | d0d4b82872cc1519c57e770af55e3e0c770d5b68 /drivers | |
| parent | 135c919758b019599c9ea7730f7ceb063f19c7b7 (diff) | |
| parent | 445caaa20c4d6da74f426464f90513b81157ad77 (diff) | |
| download | linux-c07dee7348e2451bcf2f178bf0e7830268e2c31a.tar.xz | |
Merge tag 'for-linus-20161216' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
"Nothing enormous here, though notably we have some of the first work
of a few new maintainers. I think for now I'll still be sending pull
requests, but that's open to change in the future. Summary:
Core:
- dynamic BDI object allocation (resolves some problems when built as
a module)
- cleanups in the ooblayout handling
NAND:
- new tango NAND controller driver
- new ox820 NAND controller driver
- addition of a new full-ID entry in the nand_ids table
- rework of the s3c240 driver to support DT
- extension of the nand_sdr_timings to expose tCCS, tPROG and tR
- addition of a new flag to ask the core to wait for tCCS when
sending a RNDIN/RNDOUT command
- addition of a new flag to ask the core to let the controller driver
send the READ/PROGPAGE command
Minor fixes/cleanup/cosmetic changes:
- properly support 512 ECC step size in the sunxi driver
- improve the error messages in the PXA probe path
- fix module autoload in the omap2 driver
- cleanup of several nand drivers to return nand_scan{_tail}() error
code instead of returning -EIO
- various cleanups in the denali driver
- fix an error check in nandsim
SPI NOR:
- new flash IDs
- wait for Spansion flash to be ready after quad-enable
- error handling fixes for Candence QSPI
- constify some structures in Freescale QSPI driver"
* tag 'for-linus-20161216' of git://git.infradead.org/linux-mtd: (71 commits)
mtd: Allocate bdi objects dynamically
mtd: nand: tango: Add standard legalese header
mtd: maps: add missing iounmap() in error path
mtd: spi-nor: constify fsl_qspi_devtype_data
mtd: spi-nor: Add support for mr25h40
mtd: spi-nor: Add support for N25Q016A
mtd: spi-nor: Add at25df321 spi-nor flash support
mtd: spi-nor: Fix some error codes in cqspi_setup_flash()
mtd: spi-nor: Off by one in cqspi_setup_flash()
mtd: spi-nor: add support for s25fl208k
mtd: spi-nor: fix flags for s25fl128s
mtd: spi-nor: fix spansion quad enable
mtd: spi-nor: add Macronix mx25u25635f to list of known devices.
mtd: mtdswap: fix spelling mistake "erassure" -> "erasure"
mtd: bcm47xxpart: fix parsing first block after aligned TRX
mtd: nand: tango: Use nand_to_mtd() instead of directly accessing chip->mtd
mtd: remove unneeded initializer in mtd_ooblayout_count_bytes()
mtd: use min_t() to refactor mtd_ooblayout_{get, set}_bytes()
mtd: remove unneeded initializer in mtd_ooblayout_{get, set}_bytes()
mtd: nand: nandsim: fix error check
...
Diffstat (limited to 'drivers')
44 files changed, 1370 insertions, 349 deletions
diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 377947580203..283ff7e17a0f 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -229,12 +229,10 @@ static int bcm47xxpart_parse(struct mtd_info *master, last_trx_part = curr_part - 1; - /* - * We have whole TRX scanned, skip to the next part. Use - * roundown (not roundup), as the loop will increase - * offset in next step. - */ - offset = rounddown(offset + trx->length, blocksize); + /* Jump to the end of TRX */ + offset = roundup(offset + trx->length, blocksize); + /* Next loop iteration will increase the offset */ + offset -= blocksize; continue; } diff --git a/drivers/mtd/devices/bcm47xxsflash.c b/drivers/mtd/devices/bcm47xxsflash.c index 1c65c15b31a1..514be04c0b6c 100644 --- a/drivers/mtd/devices/bcm47xxsflash.c +++ b/drivers/mtd/devices/bcm47xxsflash.c @@ -296,16 +296,30 @@ static int bcm47xxsflash_bcma_probe(struct platform_device *pdev) dev_err(dev, "can't request region for resource %pR\n", res); return -EBUSY; } - b47s->window = ioremap_cache(res->start, resource_size(res)); - if (!b47s->window) { - dev_err(dev, "ioremap failed for resource %pR\n", res); - return -ENOMEM; - } b47s->bcma_cc = container_of(sflash, struct bcma_drv_cc, sflash); b47s->cc_read = bcm47xxsflash_bcma_cc_read; b47s->cc_write = bcm47xxsflash_bcma_cc_write; + /* + * On old MIPS devices cache was magically invalidated when needed, + * allowing us to use cached access and gain some performance. Trying + * the same on ARM based BCM53573 results in flash corruptions, we need + * to use uncached access for it. + * + * It may be arch specific, but right now there is only 1 ARM SoC using + * this driver, so let's follow Broadcom's reference code and check + * ChipCommon revision. + */ + if (b47s->bcma_cc->core->id.rev == 54) + b47s->window = ioremap_nocache(res->start, resource_size(res)); + else + b47s->window = ioremap_cache(res->start, resource_size(res)); + if (!b47s->window) { + dev_err(dev, "ioremap failed for resource %pR\n", res); + return -ENOMEM; + } + switch (b47s->bcma_cc->capabilities & BCMA_CC_CAP_FLASHT) { case BCMA_CC_FLASHT_STSER: b47s->type = BCM47XXSFLASH_TYPE_ST; diff --git a/drivers/mtd/maps/sc520cdp.c b/drivers/mtd/maps/sc520cdp.c index 093edd51bdc7..9b1c13aa9f20 100644 --- a/drivers/mtd/maps/sc520cdp.c +++ b/drivers/mtd/maps/sc520cdp.c @@ -227,7 +227,7 @@ static void sc520cdp_setup_par(void) static int __init init_sc520cdp(void) { - int i, devices_found = 0; + int i, j, devices_found = 0; #ifdef REPROGRAM_PAR /* reprogram PAR registers so flash appears at the desired addresses */ @@ -243,6 +243,12 @@ static int __init init_sc520cdp(void) if (!sc520cdp_map[i].virt) { printk("Failed to ioremap_nocache\n"); + for (j = 0; j < i; j++) { + if (mymtd[j]) { + map_destroy(mymtd[j]); + iounmap(sc520cdp_map[j].virt); + } + } return -EIO; } diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index d46e4adf6d2b..052772f7caef 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -46,8 +46,7 @@ #include "mtdcore.h" -static struct backing_dev_info mtd_bdi = { -}; +static struct backing_dev_info *mtd_bdi; #ifdef CONFIG_PM_SLEEP @@ -500,7 +499,7 @@ int add_mtd_device(struct mtd_info *mtd) if (WARN_ONCE(mtd->backing_dev_info, "MTD already registered\n")) return -EEXIST; - mtd->backing_dev_info = &mtd_bdi; + mtd->backing_dev_info = mtd_bdi; BUG_ON(mtd->writesize == 0); mutex_lock(&mtd_table_mutex); @@ -1274,8 +1273,8 @@ static int mtd_ooblayout_get_bytes(struct mtd_info *mtd, u8 *buf, int section, struct mtd_oob_region *oobregion)) { - struct mtd_oob_region oobregion = { }; - int section = 0, ret; + struct mtd_oob_region oobregion; + int section, ret; ret = mtd_ooblayout_find_region(mtd, start, §ion, &oobregion, iter); @@ -1283,7 +1282,7 @@ static int mtd_ooblayout_get_bytes(struct mtd_info *mtd, u8 *buf, while (!ret) { int cnt; - cnt = oobregion.length > nbytes ? nbytes : oobregion.length; + cnt = min_t(int, nbytes, oobregion.length); memcpy(buf, oobbuf + oobregion.offset, cnt); buf += cnt; nbytes -= cnt; @@ -1317,8 +1316,8 @@ static int mtd_ooblayout_set_bytes(struct mtd_info *mtd, const u8 *buf, int section, struct mtd_oob_region *oobregion)) { - struct mtd_oob_region oobregion = { }; - int section = 0, ret; + struct mtd_oob_region oobregion; + int section, ret; ret = mtd_ooblayout_find_region(mtd, start, §ion, &oobregion, iter); @@ -1326,7 +1325,7 @@ static int mtd_ooblayout_set_bytes(struct mtd_info *mtd, const u8 *buf, while (!ret) { int cnt; - cnt = oobregion.length > nbytes ? nbytes : oobregion.length; + cnt = min_t(int, nbytes, oobregion.length); memcpy(oobbuf + oobregion.offset, buf, cnt); buf += cnt; nbytes -= cnt; @@ -1354,7 +1353,7 @@ static int mtd_ooblayout_count_bytes(struct mtd_info *mtd, int section, struct mtd_oob_region *oobregion)) { - struct mtd_oob_region oobregion = { }; + struct mtd_oob_region oobregion; int section = 0, ret, nbytes = 0; while (1) { @@ -1771,18 +1770,20 @@ static const struct file_operations mtd_proc_ops = { /*====================================================================*/ /* Init code */ -static int __init mtd_bdi_init(struct backing_dev_info *bdi, const char *name) +static struct backing_dev_info * __init mtd_bdi_init(char *name) { + struct backing_dev_info *bdi; int ret; - ret = bdi_init(bdi); - if (!ret) - ret = bdi_register(bdi, NULL, "%s", name); + bdi = kzalloc(sizeof(*bdi), GFP_KERNEL); + if (!bdi) + return ERR_PTR(-ENOMEM); + ret = bdi_setup_and_register(bdi, name); if (ret) - bdi_destroy(bdi); + kfree(bdi); - return ret; + return ret ? ERR_PTR(ret) : bdi; } static struct proc_dir_entry *proc_mtd; @@ -1795,9 +1796,11 @@ static int __init init_mtd(void) if (ret) goto err_reg; - ret = mtd_bdi_init(&mtd_bdi, "mtd"); - if (ret) + mtd_bdi = mtd_bdi_init("mtd"); + if (IS_ERR(mtd_bdi)) { + ret = PTR_ERR(mtd_bdi); goto err_bdi; + } proc_mtd = proc_create("mtd", 0, NULL, &mtd_proc_ops); @@ -1810,6 +1813,8 @@ static int __init init_mtd(void) out_procfs: if (proc_mtd) remove_proc_entry("mtd", NULL); + bdi_destroy(mtd_bdi); + kfree(mtd_bdi); err_bdi: class_unregister(&mtd_class); err_reg: @@ -1823,7 +1828,8 @@ static void __exit cleanup_mtd(void) if (proc_mtd) remove_proc_entry("mtd", NULL); class_unregister(&mtd_class); - bdi_destroy(&mtd_bdi); + bdi_destroy(mtd_bdi); + kfree(mtd_bdi); idr_destroy(&mtd_idr); } diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index cb06bdd21a1b..c40e2c951758 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -587,7 +587,7 @@ retry: ret = wait_event_interruptible(wq, erase.state == MTD_ERASE_DONE || erase.state == MTD_ERASE_FAILED); if (ret) { - dev_err(d->dev, "Interrupted erase block %#llx erassure on %s", + dev_err(d->dev, "Interrupted erase block %#llx erasure on %s\n", erase.addr, mtd->name); return -EINTR; } diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 7b7a887b4709..353a9ddf6b97 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -179,15 +179,6 @@ config MTD_NAND_S3C2410_DEBUG help Enable debugging of the S3C NAND driver -config MTD_NAND_S3C2410_HWECC - bool "Samsung S3C NAND Hardware ECC" - depends on MTD_NAND_S3C2410 - help - Enable the use of the controller's internal ECC generator when - using NAND. Early versions of the chips have had problems with - incorrect ECC generation, and if using these, the default of - software ECC is preferable. - config MTD_NAND_NDFC tristate "NDFC NanD Flash Controller" depends on 4xx @@ -205,6 +196,13 @@ config MTD_NAND_S3C2410_CLKSTOP when the is NAND chip selected or released, but will save approximately 5mA of power when there is nothing happening. +config MTD_NAND_TANGO + tristate "NAND Flash support for Tango chips" + depends on ARCH_TANGO || COMPILE_TEST + depends on HAS_DMA + help + Enables the NAND Flash controller on Tango chips. + config MTD_NAND_DISKONCHIP tristate "DiskOnChip 2000, Millennium and Millennium Plus (NAND reimplementation)" depends on HAS_IOMEM @@ -426,6 +424,11 @@ config MTD_NAND_ORION No board specific support is done by this driver, each board must advertise a platform_device for the driver to attach. +config MTD_NAND_OXNAS + tristate "NAND Flash support for Oxford Semiconductor SoC" + help + This enables the NAND flash controller on Oxford Semiconductor SoCs. + config MTD_NAND_FSL_ELBC tristate "NAND support for Freescale eLBC controllers" depends on FSL_SOC diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile index cafde6f3d957..19a66e404d5b 100644 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -16,6 +16,7 @@ obj-$(CONFIG_MTD_NAND_DENALI_DT) += denali_dt.o obj-$(CONFIG_MTD_NAND_AU1550) += au1550nd.o obj-$(CONFIG_MTD_NAND_BF5XX) += bf5xx_nand.o obj-$(CONFIG_MTD_NAND_S3C2410) += s3c2410.o +obj-$(CONFIG_MTD_NAND_TANGO) += tango_nand.o obj-$(CONFIG_MTD_NAND_DAVINCI) += davinci_nand.o obj-$(CONFIG_MTD_NAND_DISKONCHIP) += diskonchip.o obj-$(CONFIG_MTD_NAND_DOCG4) += docg4.o @@ -35,6 +36,7 @@ obj-$(CONFIG_MTD_NAND_TMIO) += tmio_nand.o obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o obj-$(CONFIG_MTD_NAND_ORION) += orion_nand.o +obj-$(CONFIG_MTD_NAND_OXNAS) += oxnas_nand.o obj-$(CONFIG_MTD_NAND_FSL_ELBC) += fsl_elbc_nand.o obj-$(CONFIG_MTD_NAND_FSL_IFC) += fsl_ifc_nand.o obj-$(CONFIG_MTD_NAND_FSL_UPM) += fsl_upm.o diff --git a/drivers/mtd/nand/ams-delta.c b/drivers/mtd/nand/ams-delta.c index 78e12cc8bac2..5d6c26f3cf7f 100644 --- a/drivers/mtd/nand/ams-delta.c +++ b/drivers/mtd/nand/ams-delta.c @@ -234,10 +234,9 @@ static int ams_delta_init(struct platform_device *pdev) goto out_gpio; /* Scan to find existence of the device */ - if (nand_scan(ams_delta_mtd, 1)) { - err = -ENXIO; + err = nand_scan(ams_delta_mtd, 1); + if (err) goto out_mtd; - } /* Register the partitions */ mtd_device_register(ams_delta_mtd, partition_info, diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 68b9160108c9..9ebd5ecefea6 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -2267,10 +2267,9 @@ static int atmel_nand_probe(struct platform_device *pdev) dev_info(host->dev, "No DMA support for NAND access.\n"); /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1, NULL)) { - res = -ENXIO; + res = nand_scan_ident(mtd, 1, NULL); + if (res) goto err_scan_ident; - } if (host->board.on_flash_bbt || on_flash_bbt) nand_chip->bbt_options |= NAND_BBT_USE_FLASH; @@ -2304,10 +2303,9 @@ static int atmel_nand_probe(struct platform_device *pdev) } /* second phase scan */ - if (nand_scan_tail(mtd)) { - res = -ENXIO; + res = nand_scan_tail(mtd); + if (res) goto err_scan_tail; - } mtd->name = "atmel_nand"; res = mtd_device_register(mtd, host->board.parts, diff --git a/drivers/mtd/nand/brcmnand/brcmnand.c b/drivers/mtd/nand/brcmnand/brcmnand.c index 9d2424bfdbf5..42ebd73f821d 100644 --- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -2209,8 +2209,9 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn) nand_writereg(ctrl, cfg_offs, nand_readreg(ctrl, cfg_offs) & ~CFG_BUS_WIDTH); - if (nand_scan_ident(mtd, 1, NULL)) - return -ENXIO; + ret = nand_scan_ident(mtd, 1, NULL); + if (ret) + return ret; chip->options |= NAND_NO_SUBPAGE_WRITE; /* @@ -2234,8 +2235,9 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn) if (ret) return ret; - if (nand_scan_tail(mtd)) - return -ENXIO; + ret = nand_scan_tail(mtd); + if (ret) + return ret; return mtd_device_register(mtd, NULL, 0); } diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 0b0c93702abb..d40c32d311d8 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -725,10 +725,9 @@ static int cafe_nand_probe(struct pci_dev *pdev, usedma = 0; /* Scan to find existence of the device */ - if (nand_scan_ident(mtd, 2, NULL)) { - err = -ENXIO; + err = nand_scan_ident(mtd, 2, NULL); + if (err) goto out_irq; - } cafe->dmabuf = dma_alloc_coherent(&cafe->pdev->dev, 2112 + sizeof(struct nand_buffers) + diff --git a/drivers/mtd/nand/cmx270_nand.c b/drivers/mtd/nand/cmx270_nand.c index 49133783ca53..226ac0bcafc6 100644 --- a/drivers/mtd/nand/cmx270_nand.c +++ b/drivers/mtd/nand/cmx270_nand.c @@ -195,9 +195,9 @@ static int __init cmx270_init(void) this->write_buf = cmx270_write_buf; /* Scan to find existence of the device */ - if (nand_scan (cmx270_nand_mtd, 1)) { + ret = nand_scan(cmx270_nand_mtd, 1); + if (ret) { pr_notice("No NAND device\n"); - ret = -ENXIO; goto err_scan; } diff --git a/drivers/mtd/nand/cs553x_nand.c b/drivers/mtd/nand/cs553x_nand.c index a65e4e0f57a1..594b28684138 100644 --- a/drivers/mtd/nand/cs553x_nand.c +++ b/drivers/mtd/nand/cs553x_nand.c @@ -242,10 +242,9 @@ static int __init cs553x_init_one(int cs, int mmio, unsigned long adr) } /* Scan to find existence of the device */ - if (nand_scan(new_mtd, 1)) { - err = -ENXIO; + err = nand_scan(new_mtd, 1); + if (err) goto out_free; - } cs553x_mtd[cs] = new_mtd; goto out; diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c index 0476ae8776d9..73b9d4e2dca0 100644 --- a/drivers/mtd/nand/denali.c +++ b/drivers/mtd/nand/denali.c @@ -21,7 +21,6 @@ #include <linux/dma-mapping.h> #include <linux/wait.h> #include <linux/mutex.h> -#include <linux/slab.h> #include <linux/mtd/mtd.h> #include <linux/module.h> @@ -182,9 +181,6 @@ static uint16_t denali_nand_reset(struct denali_nand_info *denali) { int i; - dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); - for (i = 0; i < denali->max_banks; i++) iowrite32(INTR_STATUS__RST_COMP | INTR_STATUS__TIME_OUT, denali->flash_reg + INTR_STATUS(i)); @@ -234,9 +230,6 @@ static void nand_onfi_timing_set(struct denali_nand_info *denali, uint16_t acc_clks; uint16_t addr_2_data, re_2_we, re_2_re, we_2_re, cs_cnt; - dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); - en_lo = CEIL_DIV(Trp[mode], CLK_X); en_hi = CEIL_DIV(Treh[mode], CLK_X); #if ONFI_BLOOM_TIME @@ -403,7 +396,7 @@ static void get_hynix_nand_para(struct denali_nand_info *denali, break; default: dev_warn(denali->dev, - "Spectra: Unknown Hynix NAND (Device ID: 0x%x).\n" + "Unknown Hynix NAND (Device ID: 0x%x).\n" "Will use default parameter values instead.\n", device_id); } @@ -474,33 +467,6 @@ static void detect_max_banks(struct denali_nand_info *denali) denali->max_banks = 1 << (features & FEATURES__N_BANKS); } -static void detect_partition_feature(struct denali_nand_info *denali) -{ - /* - * For MRST platform, denali->fwblks represent the - * number of blocks firmware is taken, - * FW is in protect partition and MTD driver has no - * permission to access it. So let driver know how many - * blocks it can't touch. - */ - if (ioread32(denali->flash_reg + FEATURES) & FEATURES__PARTITION) { - if ((ioread32(denali->flash_reg + PERM_SRC_ID(1)) & - PERM_SRC_ID__SRCID) == SPECTRA_PARTITION_ID) { - denali->fwblks = - ((ioread32(denali->flash_reg + MIN_MAX_BANK(1)) & - MIN_MAX_BANK__MIN_VALUE) * - denali->blksperchip) - + - (ioread32(denali->flash_reg + MIN_BLK_ADDR(1)) & - MIN_BLK_ADDR__VALUE); - } else { - denali->fwblks = SPECTRA_START_BLOCK; - } - } else { - denali->fwblks = SPECTRA_START_BLOCK; - } -} - static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) { uint16_t status = PASS; @@ -508,9 +474,6 @@ static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) uint8_t maf_id, device_id; int i; - dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); - /* * Use read id method to get device ID and other params. * For some NAND chips, controller can't report the correct @@ -552,8 +515,6 @@ static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) find_valid_banks(denali); - detect_partition_feature(denali); - /* * If the user specified to override the default timings * with a specific ONFI mode, we apply those changes here. @@ -567,9 +528,6 @@ static uint16_t denali_nand_timing_set(struct denali_nand_info *denali) static void denali_set_intr_modes(struct denali_nand_info *denali, uint16_t INT_ENABLE) { - dev_dbg(denali->dev, "%s, Line %d, Function: %s\n", - __FILE__, __LINE__, __func__); - if (INT_ENABLE) iowrite32(1, denali->flash_reg + GLOBAL_INT_ENABLE); else @@ -605,7 +563,6 @@ static void denali_irq_init(struct denali_nand_info *denali) static void denali_irq_cleanup(int irqnum, struct denali_nand_info *denali) { denali_set_intr_modes(denali, false); - free_irq(irqnum, denali); } static void denali_irq_enable(struct denali_nand_info *denali, @@ -1437,9 +1394,6 @@ static struct nand_bbt_descr bbt_mirror_descr = { /* initialize driver data structures */ static void denali_drv_init(struct denali_nand_info *denali) { - denali->idx = 0; - - /* setup interrupt handler */ /* * the completion object will be used to notify * the callee that the interrupt is done @@ -1485,14 +1439,12 @@ int denali_init(struct denali_nand_info *denali) denali_hw_init(denali); denali_drv_init(denali); - /* - * denali_isr register is done after all the hardware - * initilization is finished - */ - if (request_irq(denali->irq, denali_isr, IRQF_SHARED, - DENALI_NAND_NAME, denali)) { - pr_err("Spectra: Unable to allocate IRQ\n"); - return -ENODEV; + /* Request IRQ after all the hardware initialization is finished */ + ret = devm_request_irq(denali->dev, denali->irq, denali_isr, + IRQF_SHARED, DENALI_NAND_NAME, denali); + if (ret) { + dev_err(denali->dev, "Unable to request IRQ\n"); + return ret; } /* now that our ISR is registered, we can enable interrupts */ @@ -1510,10 +1462,9 @@ int denali_init(struct denali_nand_info *denali) * this is the first stage in a two step process to register * with the nand subsystem */ - if (nand_scan_ident(mtd, denali->max_banks, NULL)) { - ret = -ENXIO; + ret = nand_scan_ident(mtd, denali->max_banks, NULL); + if (ret) goto failed_req_irq; - } /* allocate the right size buffer now */ devm_kfree(denali->dev, denali->buf.buf); @@ -1528,7 +1479,7 @@ int denali_init(struct denali_nand_info *denali) /* Is 32-bit DMA supported? */ ret = dma_set_mask(denali->dev, DMA_BIT_MASK(32)); if (ret) { - pr_err("Spectra: no usable DMA configuration\n"); + dev_err(denali->dev, "No usable DMA configuration\n"); goto failed_req_irq; } @@ -1536,7 +1487,7 @@ int denali_init(struct denali_nand_info *denali) mtd->writesize + mtd->oobsize, DMA_BIDIRECTIONAL); if (dma_mapping_error(denali->dev, denali->buf.dma_buf)) { - dev_err(denali->dev, "Spectra: failed to map DMA buffer\n"); + dev_err(denali->dev, "Failed to map DMA buffer\n"); ret = -EIO; goto failed_req_irq; } @@ -1547,16 +1498,16 @@ int denali_init(struct denali_nand_info *denali) * the real pagesize and anything necessery */ denali->devnum = ioread32(denali->flash_reg + DEVICES_CONNECTED); - denali->nand.chipsize <<= (denali->devnum - 1); - denali->nand.page_shift += (denali->devnum - 1); + denali->nand.chipsize <<= denali->devnum - 1; + denali->nand.page_shift += denali->devnum - 1; denali->nand.pagemask = (denali->nand.chipsize >> denali->nand.page_shift) - 1; - denali->nand.bbt_erase_shift += (denali->devnum - 1); + denali->nand.bbt_erase_shift += denali->devnum - 1; denali->nand.phys_erase_shift = denali->nand.bbt_erase_shift; - denali->nand.chip_shift += (denali->devnum - 1); - mtd->writesize <<= (denali->devnum - 1); - mtd->oobsize <<= (denali->devnum - 1); - mtd->erasesize <<= (denali->devnum - 1); + denali->nand.chip_shift += denali->devnum - 1; + mtd->writesize <<= denali->devnum - 1; + mtd->oobsize <<= denali->devnum - 1; + mtd->erasesize <<= denali->devnum - 1; mtd->size = denali->nand.numchips * denali->nand.chipsize; denali->bbtskipbytes *= denali->devnum; @@ -1606,14 +1557,6 @@ int denali_init(struct denali_nand_info *denali) denali->nand.ecc.bytes *= denali->devnum; denali->nand.ecc.strength *= denali->devnum; - /* - * Let driver know the total blocks number and how many blocks - * contained by each nand chip. blksperchip will help driver to - * know how many blocks is taken by FW. - */ - denali->totalblks = mtd->size >> denali->nand.phys_erase_shift; - denali->blksperchip = denali->totalblks / denali->nand.numchips; - /* override the default read operations */ denali->nand.ecc.size = ECC_SECTOR_SIZE * denali->devnum; denali->nand.ecc.read_page = denali_read_page; @@ -1624,15 +1567,13 @@ int denali_init(struct denali_nand_info *denali) denali->nand.ecc.write_oob = denali_write_oob; denali->nand.erase = denali_erase; - if (nand_scan_tail(mtd)) { - ret = -ENXIO; + ret = nand_scan_tail(mtd); + if (ret) goto failed_req_irq; - } ret = mtd_device_register(mtd, NULL, 0); if (ret) { - dev_err(denali->dev, "Spectra: Failed to register MTD: %d\n", - ret); + dev_err(denali->dev, "Failed to register MTD: %d\n", ret); goto failed_req_irq; } return 0; diff --git a/drivers/mtd/nand/denali.h b/drivers/mtd/nand/denali.h index e7ab4866a5da..ea22191e8515 100644 --- a/drivers/mtd/nand/denali.h +++ b/drivers/mtd/nand/denali.h @@ -383,14 +383,6 @@ #define CLK_X 5 #define CLK_MULTI 4 -/* spectraswconfig.h */ -#define CMD_DMA 0 - -#define SPECTRA_PARTITION_ID 0 -/**** Block Table and Reserved Block Parameters *****/ -#define SPECTRA_START_BLOCK 3 -#define NUM_FREE_BLOCKS_GATE 30 - /* KBV - Updated to LNW scratch register address */ #define SCRATCH_REG_ADDR CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR #define SCRATCH_REG_SIZE 64 @@ -467,13 +459,9 @@ struct denali_nand_info { spinlock_t irq_lock; uint32_t irq_status; int irq_debug_array[32]; - int idx; int irq; uint32_t devnum; /* represent how many nands connected */ - uint32_t fwblks; /* represent how many blocks FW used */ - uint32_t totalblks; - uint32_t blksperchip; uint32_t bbtskipbytes; uint32_t max_banks; }; diff --git a/drivers/mtd/nand/denali_dt.c b/drivers/mtd/nand/denali_dt.c index 0cb1e8d9fbfc..5607fcd3b8ed 100644 --- a/drivers/mtd/nand/denali_dt.c +++ b/drivers/mtd/nand/denali_dt.c @@ -21,7 +21,6 @@ #include <linux/platform_device.h> #include <linux/of.h> #include <linux/of_device.h> -#include <linux/slab.h> #include "denali.h" @@ -110,7 +109,7 @@ static int denali_dt_remove(struct platform_device *ofdev) struct denali_dt *dt = platform_get_drvdata(ofdev); denali_remove(&dt->denali); - clk_disable(dt->clk); + clk_disable_unprepare(dt->clk); return 0; } diff --git a/drivers/mtd/nand/denali_pci.c b/drivers/mtd/nand/denali_pci.c index de31514df282..ac843238b77e 100644 --- a/drivers/mtd/nand/denali_pci.c +++ b/drivers/mtd/nand/denali_pci.c @@ -14,7 +14,6 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> -#include <linux/slab.h> #include "denali.h" diff --git a/drivers/mtd/nand/fsmc_nand.c b/drivers/mtd/nand/fsmc_nand.c index d4f454a4b35e..4924b43977ef 100644 --- a/drivers/mtd/nand/fsmc_nand.c +++ b/drivers/mtd/nand/fsmc_nand.c @@ -926,8 +926,8 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) /* * Scan to find existence of the device */ - if (nand_scan_ident(mtd, 1, NULL)) { - ret = -ENXIO; + ret = nand_scan_ident(mtd, 1, NULL); + if (ret) { dev_err(&pdev->dev, "No NAND Device found!\n"); goto err_scan_ident; } @@ -992,10 +992,9 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) } /* Second stage of scan to fill MTD data-structures */ - if (nand_scan_tail(mtd)) { - ret = -ENXIO; + ret = nand_scan_tail(mtd); + if (ret) goto err_probe; - } /* * The partition information can is accessed by (in the same precedence) diff --git a/drivers/mtd/nand/gpio.c b/drivers/mtd/nand/gpio.c index 6317f6836022..0d24857469ab 100644 --- a/drivers/mtd/nand/gpio.c +++ b/drivers/mtd/nand/gpio.c @@ -286,10 +286,9 @@ static int gpio_nand_probe(struct platform_device *pdev) if (gpio_is_valid(gpiomtd->plat.gpio_nwp)) gpio_direction_output(gpiomtd->plat.gpio_nwp, 1); - if (nand_scan(mtd, 1)) { - ret = -ENXIO; + ret = nand_scan(mtd, 1); + if (ret) goto err_wp; - } if (gpiomtd->plat.adjust_parts) gpiomtd->plat.adjust_parts(&gpiomtd->plat, mtd->size); diff --git a/drivers/mtd/nand/hisi504_nand.c b/drivers/mtd/nand/hisi504_nand.c index 9432546f4cd4..e40364eeb556 100644 --- a/drivers/mtd/nand/hisi504_nand.c +++ b/drivers/mtd/nand/hisi504_nand.c @@ -774,10 +774,8 @@ static int hisi_nfc_probe(struct platform_device *pdev) } ret = nand_scan_ident(mtd, max_chips, NULL); - if (ret) { - ret = -ENODEV; + if (ret) goto err_res; - } host->buffer = dmam_alloc_coherent(dev, mtd->writesize + mtd->oobsize, &host->dma_buffer, GFP_KERNEL); diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c index 852388171f20..5553a5d9efd1 100644 --- a/drivers/mtd/nand/lpc32xx_mlc.c +++ b/drivers/mtd/nand/lpc32xx_mlc.c @@ -747,10 +747,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) * Scan to find existance of the device and * Get the type of NAND device SMALL block or LARGE block */ - if (nand_scan_ident(mtd, 1, NULL)) { - res = -ENXIO; + res = nand_scan_ident(mtd, 1, NULL); + if (res) goto err_exit3; - } host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); if (!host->dma_buf) { @@ -793,10 +792,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) * Fills out all the uninitialized function pointers with the defaults * And scans for a bad block table if appropriate. */ - if (nand_scan_tail(mtd)) { - res = -ENXIO; + res = nand_scan_tail(mtd); + if (res) goto err_exit4; - } mtd->name = DRV_NAME; diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c index 8d3edc34958e..53bafe23ab39 100644 --- a/drivers/mtd/nand/lpc32xx_slc.c +++ b/drivers/mtd/nand/lpc32xx_slc.c @@ -894,10 +894,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) } /* Find NAND device */ - if (nand_scan_ident(mtd, 1, NULL)) { - res = -ENXIO; + res = nand_scan_ident(mtd, 1, NULL); + if (res) goto err_exit3; - } /* OOB and ECC CPU and DMA work areas */ host->ecc_buf = (uint32_t *)(host->data_buf + LPC32XX_DMA_DATA_SIZE); @@ -929,10 +928,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) /* * Fills out all the uninitialized function pointers with the defaults */ - if (nand_scan_tail(mtd)) { - res = -ENXIO; + res = nand_scan_tail(mtd); + if (res) goto err_exit3; - } mtd->name = "nxp_lpc3220_slc"; res = mtd_device_register(mtd, host->ncfg->parts, diff --git a/drivers/mtd/nand/mpc5121_nfc.c b/drivers/mtd/nand/mpc5121_nfc.c index 7eacb2f545f5..6d6eaed2d20c 100644 --- a/drivers/mtd/nand/mpc5121_nfc.c +++ b/drivers/mtd/nand/mpc5121_nfc.c @@ -777,9 +777,9 @@ static int mpc5121_nfc_probe(struct platform_device *op) } /* Detect NAND chips */ - if (nand_scan(mtd, be32_to_cpup(chips_no))) { + retval = nand_scan(mtd, be32_to_cpup(chips_no)); + if (retval) { dev_err(dev, "NAND Flash not found !\n"); - retval = -ENXIO; goto error; } diff --git a/drivers/mtd/nand/mtk_nand.c b/drivers/mtd/nand/mtk_nand.c index 5223a2182ee4..6c3eed3c2094 100644 --- a/drivers/mtd/nand/mtk_nand.c +++ b/drivers/mtd/nand/mtk_nand.c @@ -1297,7 +1297,7 @@ static int mtk_nfc_nand_chip_init(struct device *dev, struct mtk_nfc *nfc, ret = nand_scan_ident(mtd, nsels, NULL); if (ret) - return -ENODEV; + return ret; /* store bbt magic in page, cause OOB is not protected */ if (nand->bbt_options & NAND_BBT_USE_FLASH) @@ -1323,7 +1323,7 @@ static int mtk_nfc_nand_chip_init(struct device *dev, struct mtk_nfc *nfc, ret = nand_scan_tail(mtd); if (ret) - return -ENODEV; + return ret; ret = mtd_device_parse_register(mtd, NULL, NULL, NULL, 0); if (ret) { diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index d7f724b24fd7..61ca020c5272 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -1747,10 +1747,9 @@ static int mxcnd_probe(struct platform_device *pdev) } /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, is_imx25_nfc(host) ? 4 : 1, NULL)) { - err = -ENXIO; + err = nand_scan_ident(mtd, is_imx25_nfc(host) ? 4 : 1, NULL); + if (err) goto escan; - } switch (this->ecc.mode) { case NAND_ECC_HW: @@ -1808,10 +1807,9 @@ static int mxcnd_probe(struct platform_device *pdev) } /* second phase scan */ - if (nand_scan_tail(mtd)) { - err = -ENXIO; + err = nand_scan_tail(mtd); + if (err) goto escan; - } /* Register the partitions */ mtd_device_parse_register(mtd, part_probes, diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 3bde96a3f7bf..ec1c28aaaf23 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -709,6 +709,25 @@ static void nand_command(struct mtd_info *mtd, unsigned int command, nand_wait_ready(mtd); } +static void nand_ccs_delay(struct nand_chip *chip) +{ + /* + * The controller already takes care of waiting for tCCS when the RNDIN + * or RNDOUT command is sent, return directly. + */ + if (!(chip->options & NAND_WAIT_TCCS)) + return; + + /* + * Wait tCCS_min if it is correctly defined, otherwise wait 500ns + * (which should be safe for all NANDs). + */ + if (chip->data_interface && chip->data_interface->timings.sdr.tCCS_min) + ndelay(chip->data_interface->timings.sdr.tCCS_min / 1000); + else + ndelay(500); +} + /** * nand_command_lp - [DEFAULT] Send command to NAND large page device * @mtd: MTD device structure @@ -773,10 +792,13 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, case NAND_CMD_ERASE1: case NAND_CMD_ERASE2: case NAND_CMD_SEQIN: - case NAND_CMD_RNDIN: case NAND_CMD_STATUS: return; + case NAND_CMD_RNDIN: + nand_ccs_delay(chip); + return; + case NAND_CMD_RESET: if (chip->dev_ready) break; @@ -795,6 +817,8 @@ static void nand_command_lp(struct mtd_info *mtd, unsigned int command, NAND_NCE | NAND_CLE | NAND_CTRL_CHANGE); chip->cmd_ctrl(mtd, NAND_CMD_NONE, NAND_NCE | NAND_CTRL_CHANGE); + + nand_ccs_delay(chip); return; case NAND_CMD_READ0: @@ -1946,7 +1970,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, __func__, buf); read_retry: - chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); + if (nand_standard_page_accessors(&chip->ecc)) + chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page); /* * Now read the page into the buffer. Absent an error, @@ -2634,7 +2659,8 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, else subpage = 0; - chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page); + if (nand_standard_page_accessors(&chip->ecc)) + chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0x00, page); if (unlikely(raw)) status = chip->ecc.write_page_raw(mtd, chip, buf, @@ -2657,7 +2683,8 @@ static int nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, if (!cached || !NAND_HAS_CACHEPROG(chip)) { - chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + if (nand_standard_page_accessors(&chip->ecc)) + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); status = chip->waitfunc(mtd, chip); /* * See if operation failed and additional status checks are @@ -3985,10 +4012,9 @@ static bool find_full_id_nand(struct mtd_info *mtd, struct nand_chip *chip, /* * Get the flash and manufacturer id and lookup if the type is supported. */ -static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, - struct nand_chip *chip, - int *maf_id, int *dev_id, - struct nand_flash_dev *type) +static int nand_get_flash_type(struct mtd_info *mtd, struct nand_chip *chip, + int *maf_id, int *dev_id, + struct nand_flash_dev *type) { int busw; int i, maf_idx; @@ -4026,7 +4052,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, if (id_data[0] != *maf_id || id_data[1] != *dev_id) { pr_info("second ID read did not match %02x,%02x against %02x,%02x\n", *maf_id, *dev_id, id_data[0], id_data[1]); - return ERR_PTR(-ENODEV); + return -ENODEV; } if (!type) @@ -4053,7 +4079,7 @@ static struct nand_flash_dev *nand_get_flash_type(struct mtd_info *mtd, } if (!type->name) - return ERR_PTR(-ENODEV); + return -ENODEV; if (!mtd->name) mtd->name = type->name; @@ -4098,7 +4124,7 @@ ident_done: pr_warn("bus width %d instead %d bit\n", (chip->options & NAND_BUSWIDTH_16) ? 16 : 8, busw ? 16 : 8); - return ERR_PTR(-EINVAL); + return -EINVAL; } nand_decode_bbm_options(mtd, chip, id_data); @@ -4140,7 +4166,7 @@ ident_done: pr_info("%d MiB, %s, erase size: %d KiB, page size: %d, OOB size: %d\n", (int)(chip->chipsize >> 20), nand_is_slc(chip) ? "SLC" : "MLC", mtd->erasesize >> 10, mtd->writesize, mtd->oobsize); - return type; + return 0; } static const char * const nand_ecc_modes[] = { @@ -4306,7 +4332,6 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, { int i, nand_maf_id, nand_dev_id; struct nand_chip *chip = mtd_to_nand(mtd); - struct nand_flash_dev *type; int ret; ret = nand_dt_init(chip); @@ -4329,14 +4354,12 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, nand_set_defaults(chip, chip->options & NAND_BUSWIDTH_16); /* Read the flash type */ - type = nand_get_flash_type(mtd, chip, &nand_maf_id, - &nand_dev_id, table); - - if (IS_ERR(type)) { + ret = nand_get_flash_type(mtd, chip, &nand_maf_id, &nand_dev_id, table); + if (ret) { if (!(chip->options & NAND_SCAN_SILENT_NODEV)) pr_warn("No NAND device found\n"); chip->select_chip(mtd, -1); - return PTR_ERR(type); + return ret; } /* Initialize the ->data_interface field. */ @@ -4515,6 +4538,26 @@ static bool nand_ecc_strength_good(struct mtd_info *mtd) return corr >= ds_corr && ecc->strength >= chip->ecc_strength_ds; } +static bool invalid_ecc_page_accessors(struct nand_chip *chip) +{ + struct nand_ecc_ctrl *ecc = &chip->ecc; + + if (nand_standard_page_accessors(ecc)) + return false; + + /* + * NAND_ECC_CUSTOM_PAGE_ACCESS flag is set, make sure the NAND + * controller driver implements all the page accessors because + * default helpers are not suitable when the core does not + * send the READ0/PAGEPROG commands. + */ + return (!ecc->read_page || !ecc->write_page || + !ecc->read_page_raw || !ecc->write_page_raw || + (NAND_HAS_SUBPAGE_READ(chip) && !ecc->read_subpage) || + (NAND_HAS_SUBPAGE_WRITE(chip) && !ecc->write_subpage && + ecc->hwctl && ecc->calculate)); +} + /** * nand_scan_tail - [NAND Interface] Scan for the NAND device * @mtd: MTD device structure @@ -4535,6 +4578,11 @@ int nand_scan_tail(struct mtd_info *mtd) !(chip->bbt_options & NAND_BBT_USE_FLASH))) return -EINVAL; + if (invalid_ecc_page_accessors(chip)) { + pr_err("Invalid ECC page accessors setup\n"); + return -EINVAL; + } + if (!(chip->options & NAND_OWN_BUFFERS)) { nbuf = kzalloc(sizeof(*nbuf) + mtd->writesize + mtd->oobsize * 3, GFP_KERNEL); diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index 2af9869a115e..b3a332f37e14 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -36,6 +36,9 @@ struct nand_flash_dev nand_flash_ids[] = { {"TC58NVG2S0F 4G 3.3V 8-bit", { .id = {0x98, 0xdc, 0x90, 0x26, 0x76, 0x15, 0x01, 0x08} }, SZ_4K, SZ_512, SZ_256K, 0, 8, 224, NAND_ECC_INFO(4, SZ_512) }, + {"TC58NVG2S0H 4G 3.3V 8-bit", + { .id = {0x98, 0xdc, 0x90, 0x26, 0x76, 0x16, 0x08, 0x00} }, + SZ_4K, SZ_512, SZ_256K, 0, 8, 256, NAND_ECC_INFO(8, SZ_512) }, {"TC58NVG3S0F 8G 3.3V 8-bit", { .id = {0x98, 0xd3, 0x90, 0x26, 0x76, 0x15, 0x02, 0x08} }, SZ_4K, SZ_1K, SZ_256K, 0, 8, 232, NAND_ECC_INFO(4, SZ_512) }, diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c index 13a587407be3..f06312df3669 100644 --- a/drivers/mtd/nand/nand_timings.c +++ b/drivers/mtd/nand/nand_timings.c @@ -18,6 +18,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 20000, .tALS_min = 50000, @@ -58,6 +60,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 25000, @@ -98,6 +102,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 10000, .tALS_min = 15000, @@ -138,6 +144,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -178,6 +186,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -218,6 +228,8 @@ static const struct nand_data_interface onfi_sdr_timings[] = { { .type = NAND_SDR_IFACE, .timings.sdr = { + .tCCS_min = 500000, + .tR_max = 200000000, .tADL_min = 400000, .tALH_min = 5000, .tALS_min = 10000, @@ -290,10 +302,22 @@ int onfi_init_data_interface(struct nand_chip *chip, *iface = onfi_sdr_timings[timing_mode]; /* - * TODO: initialize timings that cannot be deduced from timing mode: + * Initialize timings that cannot be deduced from timing mode: * tR, tPROG, tCCS, ... * These information are part of the ONFI parameter page. */ + if (chip->onfi_version) { + struct nand_onfi_params *params = &chip->onfi_params; + struct nand_sdr_timings *timings = &iface->timings.sdr; + + /* microseconds -> picoseconds */ + timings->tPROG_max = 1000000UL * le16_to_cpu(params->t_prog); + timings->tBERS_max = 1000000UL * le16_to_cpu(params->t_bers); + timings->tR_max = 1000000UL * le16_to_cpu(params->t_r); + + /* nanoseconds -> picoseconds */ + timings->tCCS_min = 1000UL * le16_to_cpu(params->t_ccs); + } return 0; } diff --git a/drivers/mtd/nand/nandsim.c b/drivers/mtd/nand/nandsim.c index 1eb934414eb5..c84742671a5f 100644 --- a/drivers/mtd/nand/nandsim.c +++ b/drivers/mtd/nand/nandsim.c @@ -525,24 +525,20 @@ static int nandsim_debugfs_create(struct nandsim *dev) { struct nandsim_debug_info *dbg = &dev->dbg; struct dentry *dent; - int err; if (!IS_ENABLED(CONFIG_DEBUG_FS)) return 0; dent = debugfs_create_dir("nandsim", NULL); - if (IS_ERR_OR_NULL(dent)) { - int err = dent ? -ENODEV : PTR_ERR(dent); - - NS_ERR("cannot create \"nandsim\" debugfs directory, err %d\n", - err); - return err; + if (!dent) { + NS_ERR("cannot create \"nandsim\" debugfs directory\n"); + return -ENODEV; } dbg->dfs_root = dent; dent = debugfs_create_file("wear_report", S_IRUSR, dbg->dfs_root, dev, &dfs_fops); - if (IS_ERR_OR_NULL(dent)) + if (!dent) goto out_remove; dbg->dfs_wear_report = dent; @@ -550,8 +546,7 @@ static int nandsim_debugfs_create(struct nandsim *dev) out_remove: debugfs_remove_recursive(dbg->dfs_root); - err = dent ? PTR_ERR(dent) : -ENODEV; - return err; + return -ENODEV; } /** @@ -2313,8 +2308,6 @@ static int __init ns_init_module(void) retval = nand_scan_ident(nsmtd, 1, NULL); if (retval) { NS_ERR("cannot scan NAND Simulator device\n"); - if (retval > 0) - retval = -ENXIO; goto error; } @@ -2350,8 +2343,6 @@ static int __init ns_init_module(void) retval = nand_scan_tail(nsmtd); if (retval) { NS_ERR("can't register NAND Simulator\n"); - if (retval > 0) - retval = -ENXIO; goto error; } diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c index 5513bfd9cdc9..2a52101120d4 100644 --- a/drivers/mtd/nand/omap2.c +++ b/drivers/mtd/nand/omap2.c @@ -1895,10 +1895,10 @@ static int omap_nand_probe(struct platform_device *pdev) /* scan NAND device connected to chip controller */ nand_chip->options |= info->devsize & NAND_BUSWIDTH_16; - if (nand_scan_ident(mtd, 1, NULL)) { + err = nand_scan_ident(mtd, 1, NULL); + if (err) { dev_err(&info->pdev->dev, "scan failed, may be bus-width mismatch\n"); - err = -ENXIO; goto return_error; } @@ -2154,10 +2154,9 @@ static int omap_nand_probe(struct platform_device *pdev) scan_tail: /* second phase scan */ - if (nand_scan_tail(mtd)) { - err = -ENXIO; + err = nand_scan_tail(mtd); + if (err) goto return_error; - } if (dev->of_node) mtd_device_register(mtd, NULL, 0); @@ -2197,6 +2196,7 @@ static const struct of_device_id omap_nand_ids[] = { { .compatible = "ti,omap2-nand", }, {}, }; +MODULE_DEVICE_TABLE(of, omap_nand_ids); static struct platform_driver omap_nand_driver = { .probe = omap_nand_probe, diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c index 40a7c4a2cf0d..4a91c5d000be 100644 --- a/drivers/mtd/nand/orion_nand.c +++ b/drivers/mtd/nand/orion_nand.c @@ -155,10 +155,9 @@ static int __init orion_nand_probe(struct platform_device *pdev) clk_put(clk); } - if (nand_scan(mtd, 1)) { - ret = -ENXIO; + ret = nand_scan(mtd, 1); + if (ret) goto no_dev; - } mtd->name = "orion_nand"; ret = mtd_device_register(mtd, board->parts, board->nr_parts); diff --git a/drivers/mtd/nand/oxnas_nand.c b/drivers/mtd/nand/oxnas_nand.c new file mode 100644 index 000000000000..3e3bf3b364d2 --- /dev/null +++ b/drivers/mtd/nand/oxnas_nand.c @@ -0,0 +1,195 @@ +/* + * Oxford Semiconductor OXNAS NAND driver + + * Copyright (C) 2016 Neil Armstrong <narmstrong@baylibre.com> + * Heavily based on plat_nand.c : + * Author: Vitaly Wool <vitalywool@gmail.com> + * Copyright (C) 2013 Ma Haijun <mahaijuns@gmail.com> + * Copyright (C) 2012 John Crispin <blogic@openwrt.org> + * + * 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/io.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/clk.h> +#include <linux/reset.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> +#include <linux/of.h> + +/* Nand commands */ +#define OXNAS_NAND_CMD_ALE BIT(18) +#define OXNAS_NAND_CMD_CLE BIT(19) + +#define OXNAS_NAND_MAX_CHIPS 1 + +struct oxnas_nand_ctrl { + struct nand_hw_control base; + void __iomem *io_base; + struct clk *clk; + struct nand_chip *chips[OXNAS_NAND_MAX_CHIPS]; +}; + +static uint8_t oxnas_nand_read_byte(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct oxnas_nand_ctrl *oxnas = nand_get_controller_data(chip); + + return readb(oxnas->io_base); +} + +static void oxnas_nand_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct oxnas_nand_ctrl *oxnas = nand_get_controller_data(chip); + + ioread8_rep(oxnas->io_base, buf, len); +} + +static void oxnas_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct oxnas_nand_ctrl *oxnas = nand_get_controller_data(chip); + + iowrite8_rep(oxnas->io_base, buf, len); +} + +/* Single CS command control */ +static void oxnas_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct oxnas_nand_ctrl *oxnas = nand_get_controller_data(chip); + + if (ctrl & NAND_CLE) + writeb(cmd, oxnas->io_base + OXNAS_NAND_CMD_CLE); + else if (ctrl & NAND_ALE) + writeb(cmd, oxnas->io_base + OXNAS_NAND_CMD_ALE); +} + +/* + * Probe for the NAND device. + */ +static int oxnas_nand_probe(struct platform_device *pdev) +{ + struct device_node *np = pdev->dev.of_node; + struct device_node *nand_np; + struct oxnas_nand_ctrl *oxnas; + struct nand_chip *chip; + struct mtd_info *mtd; + struct resource *res; + int nchips = 0; + int count = 0; + int err = 0; + + /* Allocate memory for the device structure (and zero it) */ + oxnas = devm_kzalloc(&pdev->dev, sizeof(struct nand_chip), + GFP_KERNEL); + if (!oxnas) + return -ENOMEM; + + nand_hw_control_init(&oxnas->base); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + oxnas->io_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(oxnas->io_base)) + return PTR_ERR(oxnas->io_base); + + oxnas->clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(oxnas->clk)) + oxnas->clk = NULL; + + /* Only a single chip node is supported */ + count = of_get_child_count(np); + if (count > 1) + return -EINVAL; + + clk_prepare_enable(oxnas->clk); + device_reset_optional(&pdev->dev); + + for_each_child_of_node(np, nand_np) { + chip = devm_kzalloc(&pdev->dev, sizeof(struct nand_chip), + GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->controller = &oxnas->base; + + nand_set_flash_node(chip, nand_np); + nand_set_controller_data(chip, oxnas); + + mtd = nand_to_mtd(chip); + mtd->dev.parent = &pdev->dev; + mtd->priv = chip; + + chip->cmd_ctrl = oxnas_nand_cmd_ctrl; + chip->read_buf = oxnas_nand_read_buf; + chip->read_byte = oxnas_nand_read_byte; + chip->write_buf = oxnas_nand_write_buf; + chip->chip_delay = 30; + + /* Scan to find existence of the device */ + err = nand_scan(mtd, 1); + if (err) + return err; + + err = mtd_device_register(mtd, NULL, 0); + if (err) { + nand_release(mtd); + return err; + } + + oxnas->chips[nchips] = chip; + ++nchips; + } + + /* Exit if no chips found */ + if (!nchips) + return -ENODEV; + + platform_set_drvdata(pdev, oxnas); + + return 0; +} + +static int oxnas_nand_remove(struct platform_device *pdev) +{ + struct oxnas_nand_ctrl *oxnas = platform_get_drvdata(pdev); + + if (oxnas->chips[0]) + nand_release(nand_to_mtd(oxnas->chips[0])); + + clk_disable_unprepare(oxnas->clk); + + return 0; +} + +static const struct of_device_id oxnas_nand_match[] = { + { .compatible = "oxsemi,ox820-nand" }, + {}, +}; +MODULE_DEVICE_TABLE(of, oxnas_nand_match); + +static struct platform_driver oxnas_nand_driver = { + .probe = oxnas_nand_probe, + .remove = oxnas_nand_remove, + .driver = { + .name = "oxnas_nand", + .of_match_table = oxnas_nand_match, + }, +}; + +module_platform_driver(oxnas_nand_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); +MODULE_DESCRIPTION("Oxnas NAND driver"); +MODULE_ALIAS("platform:oxnas_nand"); diff --git a/drivers/mtd/nand/pasemi_nand.c b/drivers/mtd/nand/pasemi_nand.c index 5de7591b0510..074b8b01289e 100644 --- a/drivers/mtd/nand/pasemi_nand.c +++ b/drivers/mtd/nand/pasemi_nand.c @@ -156,10 +156,9 @@ static int pasemi_nand_probe(struct platform_device *ofdev) chip->bbt_options = NAND_BBT_USE_FLASH; /* Scan to find existence of the device */ - if (nand_scan(pasemi_nand_mtd, 1)) { - err = -ENXIO; + err = nand_scan(pasemi_nand_mtd, 1); + if (err) goto out_lpc; - } if (mtd_device_register(pasemi_nand_mtd, NULL, 0)) { dev_err(dev, "Unable to register MTD device\n"); diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c index 415a53a0deeb..791de3e4bbb6 100644 --- a/drivers/mtd/nand/plat_nand.c +++ b/drivers/mtd/nand/plat_nand.c @@ -86,10 +86,9 @@ static int plat_nand_probe(struct platform_device *pdev) } /* Scan to find existence of the device */ - if (nand_scan(mtd, pdata->chip.nr_chips)) { - err = -ENXIO; + err = nand_scan(mtd, pdata->chip.nr_chips); + if (err) goto out; - } part_types = pdata->chip.part_probe_types; diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index b121bf4ed73a..649ba8200832 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -1680,8 +1680,9 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd) chip->ecc.strength = pdata->ecc_strength; chip->ecc.size = pdata->ecc_step_size; - if (nand_scan_ident(mtd, 1, NULL)) - return -ENODEV; + ret = nand_scan_ident(mtd, 1, NULL); + if (ret) + return ret; if (!pdata->keep_config) { ret = pxa3xx_nand_init(host); @@ -1774,8 +1775,11 @@ static int alloc_nand_resource(struct platform_device *pdev) int ret, irq, cs; pdata = dev_get_platdata(&pdev->dev); - if (pdata->num_cs <= 0) + if (pdata->num_cs <= 0) { + dev_err(&pdev->dev, "invalid number of chip selects\n"); return -ENODEV; + } + info = devm_kzalloc(&pdev->dev, sizeof(*info) + sizeof(*host) * pdata->num_cs, GFP_KERNEL); @@ -1813,8 +1817,9 @@ static int alloc_nand_resource(struct platform_device *pdev) nand_hw_control_init(chip->controller); info->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(info->clk)) { - dev_err(&pdev->dev, "failed to get nand clock\n"); - return PTR_ERR(info->clk); + ret = PTR_ERR(info->clk); + dev_err(&pdev->dev, "failed to get nand clock: %d\n", ret); + return ret; } ret = clk_prepare_enable(info->clk); if (ret < 0) @@ -1842,6 +1847,7 @@ static int alloc_nand_resource(struct platform_device *pdev) info->mmio_base = devm_ioremap_resource(&pdev->dev, r); if (IS_ERR(info->mmio_base)) { ret = PTR_ERR(info->mmio_base); + dev_err(&pdev->dev, "failed to map register space: %d\n", ret); goto fail_disable_clk; } info->mmio_phys = r->start; @@ -1861,7 +1867,7 @@ static int alloc_nand_resource(struct platform_device *pdev) pxa3xx_nand_irq_thread, IRQF_ONESHOT, pdev->name, info); if (ret < 0) { - dev_err(&pdev->dev, "failed to request IRQ\n"); + dev_err(&pdev->dev, "failed to request IRQ: %d\n", ret); goto fail_free_buf; } @@ -1960,10 +1966,8 @@ static int pxa3xx_nand_probe(struct platform_device *pdev) } ret = alloc_nand_resource(pdev); - if (ret) { - dev_err(&pdev->dev, "alloc nand resource failed\n"); + if (ret) return ret; - } info = platform_get_drvdata(pdev); probe_success = 0; diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index d459c19d78de..f0b030d44f71 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -39,6 +39,8 @@ #include <linux/slab.h> #include <linux/clk.h> #include <linux/cpufreq.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/mtd/mtd.h> #include <linux/mtd/nand.h> @@ -185,6 +187,22 @@ struct s3c2410_nand_info { #endif }; +struct s3c24XX_nand_devtype_data { + enum s3c_cpu_type type; +}; + +static const struct s3c24XX_nand_devtype_data s3c2410_nand_devtype_data = { + .type = TYPE_S3C2410, +}; + +static const struct s3c24XX_nand_devtype_data s3c2412_nand_devtype_data = { + .type = TYPE_S3C2412, +}; + +static const struct s3c24XX_nand_devtype_data s3c2440_nand_devtype_data = { + .type = TYPE_S3C2440, +}; + /* conversion functions */ static struct s3c2410_nand_mtd *s3c2410_nand_mtd_toours(struct mtd_info *mtd) @@ -497,7 +515,6 @@ static int s3c2412_nand_devready(struct mtd_info *mtd) /* ECC handling functions */ -#ifdef CONFIG_MTD_NAND_S3C2410_HWECC static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) { @@ -649,7 +666,6 @@ static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, return 0; } -#endif /* over-ride the standard functions for a little more speed. We can * use read/write block to move the data buffers to/from the controller @@ -796,6 +812,30 @@ static int s3c2410_nand_add_partition(struct s3c2410_nand_info *info, return -ENODEV; } +static int s3c2410_nand_setup_data_interface(struct mtd_info *mtd, + const struct nand_data_interface *conf, + bool check_only) +{ + struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); + struct s3c2410_platform_nand *pdata = info->platform; + const struct nand_sdr_timings *timings; + int tacls; + + timings = nand_get_sdr_timings(conf); + if (IS_ERR(timings)) + return -ENOTSUPP; + + tacls = timings->tCLS_min - timings->tWP_min; + if (tacls < 0) + tacls = 0; + + pdata->tacls = DIV_ROUND_UP(tacls, 1000); + pdata->twrph0 = DIV_ROUND_UP(timings->tWP_min, 1000); + pdata->twrph1 = DIV_ROUND_UP(timings->tCLH_min, 1000); + + return s3c2410_nand_setrate(info); +} + /** * s3c2410_nand_init_chip - initialise a single instance of an chip * @info: The base NAND controller the chip is on. @@ -810,9 +850,12 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, struct s3c2410_nand_mtd *nmtd, struct s3c2410_nand_set *set) { + struct device_node *np = info->device->of_node; struct nand_chip *chip = &nmtd->chip; void __iomem *regs = info->regs; + nand_set_flash_node(chip, set->of_node); + chip->write_buf = s3c2410_nand_write_buf; chip->read_buf = s3c2410_nand_read_buf; chip->select_chip = s3c2410_nand_select_chip; @@ -821,6 +864,13 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, chip->options = set->options; chip->controller = &info->controller; + /* + * let's keep behavior unchanged for legacy boards booting via pdata and + * auto-detect timings only when booting with a device tree. + */ + if (np) + chip->setup_data_interface = s3c2410_nand_setup_data_interface; + switch (info->cpu_type) { case TYPE_S3C2410: chip->IO_ADDR_W = regs + S3C2410_NFDATA; @@ -858,58 +908,14 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, nmtd->info = info; nmtd->set = set; -#ifdef CONFIG_MTD_NAND_S3C2410_HWECC - chip->ecc.calculate = s3c2410_nand_calculate_ecc; - chip->ecc.correct = s3c2410_nand_correct_data; - chip->ecc.mode = NAND_ECC_HW; - chip->ecc.strength = 1; + chip->ecc.mode = info->platform->ecc_mode; - switch (info->cpu_type) { - case TYPE_S3C2410: - chip->ecc.hwctl = s3c2410_nand_enable_hwecc; - chip->ecc.calculate = s3c2410_nand_calculate_ecc; - break; - - case TYPE_S3C2412: - chip->ecc.hwctl = s3c2412_nand_enable_hwecc; - chip->ecc.calculate = s3c2412_nand_calculate_ecc; - break; - - case TYPE_S3C2440: - chip->ecc.hwctl = s3c2440_nand_enable_hwecc; - chip->ecc.calculate = s3c2440_nand_calculate_ecc; - break; - } -#else - chip->ecc.mode = NAND_ECC_SOFT; - chip->ecc.algo = NAND_ECC_HAMMING; -#endif - - if (set->disable_ecc) - chip->ecc.mode = NAND_ECC_NONE; - - switch (chip->ecc.mode) { - case NAND_ECC_NONE: - dev_info(info->device, "NAND ECC disabled\n"); - break; - case NAND_ECC_SOFT: - dev_info(info->device, "NAND soft ECC\n"); - break; - case NAND_ECC_HW: - dev_info(info->device, "NAND hardware ECC\n"); - break; - default: - dev_info(info->device, "NAND ECC UNKNOWN\n"); - break; - } - - /* If you use u-boot BBT creation code, specifying this flag will - * let the kernel fish out the BBT from the NAND, and also skip the - * full NAND scan that can take 1/2s or so. Little things... */ - if (set->flash_bbt) { + /* + * If you use u-boot BBT creation code, specifying this flag will + * let the kernel fish out the BBT from the NAND. + */ + if (set->flash_bbt) chip->bbt_options |= NAND_BBT_USE_FLASH; - chip->options |= NAND_SKIP_BBTSCAN; - } } /** @@ -923,28 +929,146 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, * * The internal state is currently limited to the ECC state information. */ -static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, - struct s3c2410_nand_mtd *nmtd) +static int s3c2410_nand_update_chip(struct s3c2410_nand_info *info, + struct s3c2410_nand_mtd *nmtd) { struct nand_chip *chip = &nmtd->chip; - dev_dbg(info->device, "chip %p => page shift %d\n", - chip, chip->page_shift); + switch (chip->ecc.mode) { - if (chip->ecc.mode != NAND_ECC_HW) - return; + case NAND_ECC_NONE: + dev_info(info->device, "ECC disabled\n"); + break; + + case NAND_ECC_SOFT: + /* + * This driver expects Hamming based ECC when ecc_mode is set + * to NAND_ECC_SOFT. Force ecc.algo to NAND_ECC_HAMMING to + * avoid adding an extra ecc_algo field to + * s3c2410_platform_nand. + */ + chip->ecc.algo = NAND_ECC_HAMMING; + dev_info(info->device, "soft ECC\n"); + break; + + case NAND_ECC_HW: + chip->ecc.calculate = s3c2410_nand_calculate_ecc; + chip->ecc.correct = s3c2410_nand_correct_data; + chip->ecc.strength = 1; + + switch (info->cpu_type) { + case TYPE_S3C2410: + chip->ecc.hwctl = s3c2410_nand_enable_hwecc; + chip->ecc.calculate = s3c2410_nand_calculate_ecc; + break; + + case TYPE_S3C2412: + chip->ecc.hwctl = s3c2412_nand_enable_hwecc; + chip->ecc.calculate = s3c2412_nand_calculate_ecc; + break; + + case TYPE_S3C2440: + chip->ecc.hwctl = s3c2440_nand_enable_hwecc; + chip->ecc.calculate = s3c2440_nand_calculate_ecc; + break; + } + + dev_dbg(info->device, "chip %p => page shift %d\n", + chip, chip->page_shift); /* change the behaviour depending on whether we are using * the large or small page nand device */ + if (chip->page_shift > 10) { + chip->ecc.size = 256; + chip->ecc.bytes = 3; + } else { + chip->ecc.size = 512; + chip->ecc.bytes = 3; + mtd_set_ooblayout(nand_to_mtd(chip), + &s3c2410_ooblayout_ops); + } - if (chip->page_shift > 10) { - chip->ecc.size = 256; - chip->ecc.bytes = 3; - } else { - chip->ecc.size = 512; - chip->ecc.bytes = 3; - mtd_set_ooblayout(nand_to_mtd(chip), &s3c2410_ooblayout_ops); + dev_info(info->device, "hardware ECC\n"); + break; + + default: + dev_err(info->device, "invalid ECC mode!\n"); + return -EINVAL; } + + if (chip->bbt_options & NAND_BBT_USE_FLASH) + chip->options |= NAND_SKIP_BBTSCAN; + + return 0; +} + +static const struct of_device_id s3c24xx_nand_dt_ids[] = { + { + .compatible = "samsung,s3c2410-nand", + .data = &s3c2410_nand_devtype_data, + }, { + /* also compatible with s3c6400 */ + .compatible = "samsung,s3c2412-nand", + .data = &s3c2412_nand_devtype_data, + }, { + .compatible = "samsung,s3c2440-nand", + .data = &s3c2440_nand_devtype_data, + }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, s3c24xx_nand_dt_ids); + +static int s3c24xx_nand_probe_dt(struct platform_device *pdev) +{ + const struct s3c24XX_nand_devtype_data *devtype_data; + struct s3c2410_platform_nand *pdata; + struct s3c2410_nand_info *info = platform_get_drvdata(pdev); + struct device_node *np = pdev->dev.of_node, *child; + struct s3c2410_nand_set *sets; + + devtype_data = of_device_get_match_data(&pdev->dev); + if (!devtype_data) + return -ENODEV; + + info->cpu_type = devtype_data->type; + + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdev->dev.platform_data = pdata; + + pdata->nr_sets = of_get_child_count(np); + if (!pdata->nr_sets) + return 0; + + sets = devm_kzalloc(&pdev->dev, sizeof(*sets) * pdata->nr_sets, + GFP_KERNEL); + if (!sets) + return -ENOMEM; + + pdata->sets = sets; + + for_each_available_child_of_node(np, child) { + sets->name = (char *)child->name; + sets->of_node = child; + sets->nr_chips = 1; + + of_node_get(child); + + sets++; + } + + return 0; +} + +static int s3c24xx_nand_probe_pdata(struct platform_device *pdev) +{ + struct s3c2410_nand_info *info = platform_get_drvdata(pdev); + + info->cpu_type = platform_get_device_id(pdev)->driver_data; + + return 0; } /* s3c24xx_nand_probe @@ -956,8 +1080,7 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, */ static int s3c24xx_nand_probe(struct platform_device *pdev) { - struct s3c2410_platform_nand *plat = to_nand_plat(pdev); - enum s3c_cpu_type cpu_type; + struct s3c2410_platform_nand *plat; struct s3c2410_nand_info *info; struct s3c2410_nand_mtd *nmtd; struct s3c2410_nand_set *sets; @@ -967,8 +1090,6 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) int nr_sets; int setno; - cpu_type = platform_get_device_id(pdev)->driver_data; - info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); if (info == NULL) { err = -ENOMEM; @@ -990,6 +1111,16 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) s3c2410_nand_clk_set_state(info, CLOCK_ENABLE); + if (pdev->dev.of_node) + err = s3c24xx_nand_probe_dt(pdev); + else + err = s3c24xx_nand_probe_pdata(pdev); + + if (err) + goto exit_error; + + plat = to_nand_plat(pdev); + /* allocate and map the resource */ /* currently we assume we have the one resource */ @@ -998,7 +1129,6 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) info->device = &pdev->dev; info->platform = plat; - info->cpu_type = cpu_type; info->regs = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(info->regs)) { @@ -1008,12 +1138,6 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "mapped registers at %p\n", info->regs); - /* initialise the hardware */ - - err = s3c2410_nand_inithw(info); - if (err != 0) - goto exit_error; - sets = (plat != NULL) ? plat->sets : NULL; nr_sets = (plat != NULL) ? plat->nr_sets : 1; @@ -1046,7 +1170,9 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) NULL); if (nmtd->scan_res == 0) { - s3c2410_nand_update_chip(info, nmtd); + err = s3c2410_nand_update_chip(info, nmtd); + if (err < 0) + goto exit_error; nand_scan_tail(mtd); s3c2410_nand_add_partition(info, nmtd, sets); } @@ -1055,6 +1181,11 @@ static int s3c24xx_nand_probe(struct platform_device *pdev) sets++; } + /* initialise the hardware */ + err = s3c2410_nand_inithw(info); + if (err != 0) + goto exit_error; + err = s3c2410_nand_cpufreq_register(info); if (err < 0) { dev_err(&pdev->dev, "failed to init cpufreq support\n"); @@ -1155,6 +1286,7 @@ static struct platform_driver s3c24xx_nand_driver = { .id_table = s3c24xx_driver_ids, .driver = { .name = "s3c24xx-nand", + .of_match_table = s3c24xx_nand_dt_ids, }, }; diff --git a/drivers/mtd/nand/socrates_nand.c b/drivers/mtd/nand/socrates_nand.c index 888fd314c62a..72369bd079af 100644 --- a/drivers/mtd/nand/socrates_nand.c +++ b/drivers/mtd/nand/socrates_nand.c @@ -187,17 +187,9 @@ static int socrates_nand_probe(struct platform_device *ofdev) dev_set_drvdata(&ofdev->dev, host); - /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1, NULL)) { - res = -ENXIO; + res = nand_scan(mtd, 1); + if (res) goto out; - } - - /* second phase scan */ - if (nand_scan_tail(mtd)) { - res = -ENXIO; - goto out; - } res = mtd_device_register(mtd, NULL, 0); if (!res) diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c index 8b8470c4e6d0..e40482a65de6 100644 --- a/drivers/mtd/nand/sunxi_nand.c +++ b/drivers/mtd/nand/sunxi_nand.c @@ -145,6 +145,7 @@ #define NFC_ECC_PIPELINE BIT(3) #define NFC_ECC_EXCEPTION BIT(4) #define NFC_ECC_BLOCK_SIZE_MSK BIT(5) +#define NFC_ECC_BLOCK_512 BIT(5) #define NFC_RANDOM_EN BIT(9) #define NFC_RANDOM_DIRECTION BIT(10) #define NFC_ECC_MODE_MSK GENMASK(15, 12) @@ -817,6 +818,9 @@ static void sunxi_nfc_hw_ecc_enable(struct mtd_info *mtd) ecc_ctl |= NFC_ECC_EN | NFC_ECC_MODE(data->mode) | NFC_ECC_EXCEPTION | NFC_ECC_PIPELINE; + if (nand->ecc.size == 512) + ecc_ctl |= NFC_ECC_BLOCK_512; + writel(ecc_ctl, nfc->regs + NFC_REG_ECC_CTL); } diff --git a/drivers/mtd/nand/tango_nand.c b/drivers/mtd/nand/tango_nand.c new file mode 100644 index 000000000000..28c7f474be77 --- /dev/null +++ b/drivers/mtd/nand/tango_nand.c @@ -0,0 +1,676 @@ +/* + * Copyright (C) 2016 Sigma Designs + * + * 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/io.h> +#include <linux/of.h> +#include <linux/clk.h> +#include <linux/iopoll.h> +#include <linux/module.h> +#include <linux/mtd/nand.h> +#include <linux/dmaengine.h> +#include <linux/dma-mapping.h> +#include <linux/platform_device.h> + +/* Offsets relative to chip->base */ +#define PBUS_CMD 0 +#define PBUS_ADDR 4 +#define PBUS_DATA 8 + +/* Offsets relative to reg_base */ +#define NFC_STATUS 0x00 +#define NFC_FLASH_CMD 0x04 +#define NFC_DEVICE_CFG 0x08 +#define NFC_TIMING1 0x0c +#define NFC_TIMING2 0x10 +#define NFC_XFER_CFG 0x14 +#define NFC_PKT_0_CFG 0x18 +#define NFC_PKT_N_CFG 0x1c +#define NFC_BB_CFG 0x20 +#define NFC_ADDR_PAGE 0x24 +#define NFC_ADDR_OFFSET 0x28 +#define NFC_XFER_STATUS 0x2c + +/* NFC_STATUS values */ +#define CMD_READY BIT(31) + +/* NFC_FLASH_CMD values */ +#define NFC_READ 1 +#define NFC_WRITE 2 + +/* NFC_XFER_STATUS values */ +#define PAGE_IS_EMPTY BIT(16) + +/* Offsets relative to mem_base */ +#define METADATA 0x000 +#define ERROR_REPORT 0x1c0 + +/* + * Error reports are split in two bytes: + * byte 0 for the first packet in the page (PKT_0) + * byte 1 for other packets in the page (PKT_N, for N > 0) + * ERR_COUNT_PKT_N is the max error count over all but the first packet. + */ +#define DECODE_OK_PKT_0(v) ((v) & BIT(7)) +#define DECODE_OK_PKT_N(v) ((v) & BIT(15)) +#define ERR_COUNT_PKT_0(v) (((v) >> 0) & 0x3f) +#define ERR_COUNT_PKT_N(v) (((v) >> 8) & 0x3f) + +/* Offsets relative to pbus_base */ +#define PBUS_CS_CTRL 0x83c +#define PBUS_PAD_MODE 0x8f0 + +/* PBUS_CS_CTRL values */ +#define PBUS_IORDY BIT(31) + +/* + * PBUS_PAD_MODE values + * In raw mode, the driver communicates directly with the NAND chips. + * In NFC mode, the NAND Flash controller manages the communication. + * We use NFC mode for read and write; raw mode for everything else. + */ +#define MODE_RAW 0 +#define MODE_NFC BIT(31) + +#define METADATA_SIZE 4 +#define BBM_SIZE 6 +#define FIELD_ORDER 15 + +#define MAX_CS 4 + +struct tango_nfc { + struct nand_hw_control hw; + void __iomem *reg_base; + void __iomem *mem_base; + void __iomem *pbus_base; + struct tango_chip *chips[MAX_CS]; + struct dma_chan *chan; + int freq_kHz; +}; + +#define to_tango_nfc(ptr) container_of(ptr, struct tango_nfc, hw) + +struct tango_chip { + struct nand_chip nand_chip; + void __iomem *base; + u32 timing1; + u32 timing2; + u32 xfer_cfg; + u32 pkt_0_cfg; + u32 pkt_n_cfg; + u32 bb_cfg; +}; + +#define to_tango_chip(ptr) container_of(ptr, struct tango_chip, nand_chip) + +#define XFER_CFG(cs, page_count, steps, metadata_size) \ + ((cs) << 24 | (page_count) << 16 | (steps) << 8 | (metadata_size)) + +#define PKT_CFG(size, strength) ((size) << 16 | (strength)) + +#define BB_CFG(bb_offset, bb_size) ((bb_offset) << 16 | (bb_size)) + +#define TIMING(t0, t1, t2, t3) ((t0) << 24 | (t1) << 16 | (t2) << 8 | (t3)) + +static void tango_cmd_ctrl(struct mtd_info *mtd, int dat, unsigned int ctrl) +{ + struct tango_chip *tchip = to_tango_chip(mtd_to_nand(mtd)); + + if (ctrl & NAND_CLE) + writeb_relaxed(dat, tchip->base + PBUS_CMD); + + if (ctrl & NAND_ALE) + writeb_relaxed(dat, tchip->base + PBUS_ADDR); +} + +static int tango_dev_ready(struct mtd_info *mtd) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct tango_nfc *nfc = to_tango_nfc(chip->controller); + + return readl_relaxed(nfc->pbus_base + PBUS_CS_CTRL) & PBUS_IORDY; +} + +static u8 tango_read_byte(struct mtd_info *mtd) +{ + struct tango_chip *tchip = to_tango_chip(mtd_to_nand(mtd)); + + return readb_relaxed(tchip->base + PBUS_DATA); +} + +static void tango_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + struct tango_chip *tchip = to_tango_chip(mtd_to_nand(mtd)); + + ioread8_rep(tchip->base + PBUS_DATA, buf, len); +} + +static void tango_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct tango_chip *tchip = to_tango_chip(mtd_to_nand(mtd)); + + iowrite8_rep(tchip->base + PBUS_DATA, buf, len); +} + +static void tango_select_chip(struct mtd_info *mtd, int idx) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct tango_nfc *nfc = to_tango_nfc(chip->controller); + struct tango_chip *tchip = to_tango_chip(chip); + + if (idx < 0) + return; /* No "chip unselect" function */ + + writel_relaxed(tchip->timing1, nfc->reg_base + NFC_TIMING1); + writel_relaxed(tchip->timing2, nfc->reg_base + NFC_TIMING2); + writel_relaxed(tchip->xfer_cfg, nfc->reg_base + NFC_XFER_CFG); + writel_relaxed(tchip->pkt_0_cfg, nfc->reg_base + NFC_PKT_0_CFG); + writel_relaxed(tchip->pkt_n_cfg, nfc->reg_base + NFC_PKT_N_CFG); + writel_relaxed(tchip->bb_cfg, nfc->reg_base + NFC_BB_CFG); +} + +/* + * The controller does not check for bitflips in erased pages, + * therefore software must check instead. + */ +static int check_erased_page(struct nand_chip *chip, u8 *buf) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + u8 *meta = chip->oob_poi + BBM_SIZE; + u8 *ecc = chip->oob_poi + BBM_SIZE + METADATA_SIZE; + const int ecc_size = chip->ecc.bytes; + const int pkt_size = chip->ecc.size; + int i, res, meta_len, bitflips = 0; + + for (i = 0; i < chip->ecc.steps; ++i) { + meta_len = i ? 0 : METADATA_SIZE; + res = nand_check_erased_ecc_chunk(buf, pkt_size, ecc, ecc_size, + meta, meta_len, + chip->ecc.strength); + if (res < 0) + mtd->ecc_stats.failed++; + + bitflips = max(res, bitflips); + buf += pkt_size; + ecc += ecc_size; + } + + return bitflips; +} + +static int decode_error_report(struct tango_nfc *nfc) +{ + u32 status, res; + + status = readl_relaxed(nfc->reg_base + NFC_XFER_STATUS); + if (status & PAGE_IS_EMPTY) + return 0; + + res = readl_relaxed(nfc->mem_base + ERROR_REPORT); + + if (DECODE_OK_PKT_0(res) && DECODE_OK_PKT_N(res)) + return max(ERR_COUNT_PKT_0(res), ERR_COUNT_PKT_N(res)); + + return -EBADMSG; +} + +static void tango_dma_callback(void *arg) +{ + complete(arg); +} + +static int do_dma(struct tango_nfc *nfc, int dir, int cmd, const void *buf, + int len, int page) +{ + void __iomem *addr = nfc->reg_base + NFC_STATUS; + struct dma_chan *chan = nfc->chan; + struct dma_async_tx_descriptor *desc; + struct scatterlist sg; + struct completion tx_done; + int err = -EIO; + u32 res, val; + + sg_init_one(&sg, buf, len); + if (dma_map_sg(chan->device->dev, &sg, 1, dir) != 1) + return -EIO; + + desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir, DMA_PREP_INTERRUPT); + if (!desc) + goto dma_unmap; + + desc->callback = tango_dma_callback; + desc->callback_param = &tx_done; + init_completion(&tx_done); + + writel_relaxed(MODE_NFC, nfc->pbus_base + PBUS_PAD_MODE); + + writel_relaxed(page, nfc->reg_base + NFC_ADDR_PAGE); + writel_relaxed(0, nfc->reg_base + NFC_ADDR_OFFSET); + writel_relaxed(cmd, nfc->reg_base + NFC_FLASH_CMD); + + dmaengine_submit(desc); + dma_async_issue_pending(chan); + + res = wait_for_completion_timeout(&tx_done, HZ); + if (res > 0) + err = readl_poll_timeout(addr, val, val & CMD_READY, 0, 1000); + + writel_relaxed(MODE_RAW, nfc->pbus_base + PBUS_PAD_MODE); + +dma_unmap: + dma_unmap_sg(chan->device->dev, &sg, 1, dir); + + return err; +} + +static int tango_read_page(struct mtd_info *mtd, struct nand_chip *chip, + u8 *buf, int oob_required, int page) +{ + struct tango_nfc *nfc = to_tango_nfc(chip->controller); + int err, res, len = mtd->writesize; + + if (oob_required) + chip->ecc.read_oob(mtd, chip, page); + + err = do_dma(nfc, DMA_FROM_DEVICE, NFC_READ, buf, len, page); + if (err) + return err; + + res = decode_error_report(nfc); + if (res < 0) { + chip->ecc.read_oob_raw(mtd, chip, page); + res = check_erased_page(chip, buf); + } + + return res; +} + +static int tango_write_page(struct mtd_info *mtd, struct nand_chip *chip, + const u8 *buf, int oob_required, int page) +{ + struct tango_nfc *nfc = to_tango_nfc(chip->controller); + int err, len = mtd->writesize; + + /* Calling tango_write_oob() would send PAGEPROG twice */ + if (oob_required) + return -ENOTSUPP; + + writel_relaxed(0xffffffff, nfc->mem_base + METADATA); + err = do_dma(nfc, DMA_TO_DEVICE, NFC_WRITE, buf, len, page); + if (err) + return err; + + return 0; +} + +static void aux_read(struct nand_chip *chip, u8 **buf, int len, int *pos) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + + *pos += len; + + if (!*buf) { + /* skip over "len" bytes */ + chip->cmdfunc(mtd, NAND_CMD_RNDOUT, *pos, -1); + } else { + tango_read_buf(mtd, *buf, len); + *buf += len; + } +} + +static void aux_write(struct nand_chip *chip, const u8 **buf, int len, int *pos) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + + *pos += len; + + if (!*buf) { + /* skip over "len" bytes */ + chip->cmdfunc(mtd, NAND_CMD_SEQIN, *pos, -1); + } else { + tango_write_buf(mtd, *buf, len); + *buf += len; + } +} + +/* + * Physical page layout (not drawn to scale) + * + * NB: Bad Block Marker area splits PKT_N in two (N1, N2). + * + * +---+-----------------+-------+-----+-----------+-----+----+-------+ + * | M | PKT_0 | ECC_0 | ... | N1 | BBM | N2 | ECC_N | + * +---+-----------------+-------+-----+-----------+-----+----+-------+ + * + * Logical page layout: + * + * +-----+---+-------+-----+-------+ + * oob = | BBM | M | ECC_0 | ... | ECC_N | + * +-----+---+-------+-----+-------+ + * + * +-----------------+-----+-----------------+ + * buf = | PKT_0 | ... | PKT_N | + * +-----------------+-----+-----------------+ + */ +static void raw_read(struct nand_chip *chip, u8 *buf, u8 *oob) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + u8 *oob_orig = oob; + const int page_size = mtd->writesize; + const int ecc_size = chip->ecc.bytes; + const int pkt_size = chip->ecc.size; + int pos = 0; /* position within physical page */ + int rem = page_size; /* bytes remaining until BBM area */ + + if (oob) + oob += BBM_SIZE; + + aux_read(chip, &oob, METADATA_SIZE, &pos); + + while (rem > pkt_size) { + aux_read(chip, &buf, pkt_size, &pos); + aux_read(chip, &oob, ecc_size, &pos); + rem = page_size - pos; + } + + aux_read(chip, &buf, rem, &pos); + aux_read(chip, &oob_orig, BBM_SIZE, &pos); + aux_read(chip, &buf, pkt_size - rem, &pos); + aux_read(chip, &oob, ecc_size, &pos); +} + +static void raw_write(struct nand_chip *chip, const u8 *buf, const u8 *oob) +{ + struct mtd_info *mtd = nand_to_mtd(chip); + const u8 *oob_orig = oob; + const int page_size = mtd->writesize; + const int ecc_size = chip->ecc.bytes; + const int pkt_size = chip->ecc.size; + int pos = 0; /* position within physical page */ + int rem = page_size; /* bytes remaining until BBM area */ + + if (oob) + oob += BBM_SIZE; + + aux_write(chip, &oob, METADATA_SIZE, &pos); + + while (rem > pkt_size) { + aux_write(chip, &buf, pkt_size, &pos); + aux_write(chip, &oob, ecc_size, &pos); + rem = page_size - pos; + } + + aux_write(chip, &buf, rem, &pos); + aux_write(chip, &oob_orig, BBM_SIZE, &pos); + aux_write(chip, &buf, pkt_size - rem, &pos); + aux_write(chip, &oob, ecc_size, &pos); +} + +static int tango_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + u8 *buf, int oob_required, int page) +{ + chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); + raw_read(chip, buf, chip->oob_poi); + return 0; +} + +static int tango_write_page_raw(struct mtd_info *mtd, struct nand_chip *chip, + const u8 *buf, int oob_required, int page) +{ + chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0, page); + raw_write(chip, buf, chip->oob_poi); + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + return 0; +} + +static int tango_read_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page) +{ + chip->cmdfunc(mtd, NAND_CMD_READ0, 0, page); + raw_read(chip, NULL, chip->oob_poi); + return 0; +} + +static int tango_write_oob(struct mtd_info *mtd, struct nand_chip *chip, + int page) +{ + chip->cmdfunc(mtd, NAND_CMD_SEQIN, 0, page); + raw_write(chip, NULL, chip->oob_poi); + chip->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1); + chip->waitfunc(mtd, chip); + return 0; +} + +static int oob_ecc(struct mtd_info *mtd, int idx, struct mtd_oob_region *res) +{ + struct nand_chip *chip = mtd_to_nand(mtd); + struct nand_ecc_ctrl *ecc = &chip->ecc; + + if (idx >= ecc->steps) + return -ERANGE; + + res->offset = BBM_SIZE + METADATA_SIZE + ecc->bytes * idx; + res->length = ecc->bytes; + + return 0; +} + +static int oob_free(struct mtd_info *mtd, int idx, struct mtd_oob_region *res) +{ + return -ERANGE; /* no free space in spare area */ +} + +static const struct mtd_ooblayout_ops tango_nand_ooblayout_ops = { + .ecc = oob_ecc, + .free = oob_free, +}; + +static u32 to_ticks(int kHz, int ps) +{ + return DIV_ROUND_UP_ULL((u64)kHz * ps, NSEC_PER_SEC); +} + +static int tango_set_timings(struct mtd_info *mtd, + const struct nand_data_interface *conf, + bool check_only) +{ + const struct nand_sdr_timings *sdr = nand_get_sdr_timings(conf); + struct nand_chip *chip = mtd_to_nand(mtd); + struct tango_nfc *nfc = to_tango_nfc(chip->controller); + struct tango_chip *tchip = to_tango_chip(chip); + u32 Trdy, Textw, Twc, Twpw, Tacc, Thold, Trpw, Textr; + int kHz = nfc->freq_kHz; + + if (IS_ERR(sdr)) + return PTR_ERR(sdr); + + if (check_only) + return 0; + + Trdy = to_ticks(kHz, sdr->tCEA_max - sdr->tREA_max); + Textw = to_ticks(kHz, sdr->tWB_max); + Twc = to_ticks(kHz, sdr->tWC_min); + Twpw = to_ticks(kHz, sdr->tWC_min - sdr->tWP_min); + + Tacc = to_ticks(kHz, sdr->tREA_max); + Thold = to_ticks(kHz, sdr->tREH_min); + Trpw = to_ticks(kHz, sdr->tRC_min - sdr->tREH_min); + Textr = to_ticks(kHz, sdr->tRHZ_max); + + tchip->timing1 = TIMING(Trdy, Textw, Twc, Twpw); + tchip->timing2 = TIMING(Tacc, Thold, Trpw, Textr); + + return 0; +} + +static int chip_init(struct device *dev, struct device_node *np) +{ + u32 cs; + int err, res; + struct mtd_info *mtd; + struct nand_chip *chip; + struct tango_chip *tchip; + struct nand_ecc_ctrl *ecc; + struct tango_nfc *nfc = dev_get_drvdata(dev); + + tchip = devm_kzalloc(dev, sizeof(*tchip), GFP_KERNEL); + if (!tchip) + return -ENOMEM; + + res = of_property_count_u32_elems(np, "reg"); + if (res < 0) + return res; + + if (res != 1) + return -ENOTSUPP; /* Multi-CS chips are not supported */ + + err = of_property_read_u32_index(np, "reg", 0, &cs); + if (err) + return err; + + if (cs >= MAX_CS) + return -EINVAL; + + chip = &tchip->nand_chip; + ecc = &chip->ecc; + mtd = nand_to_mtd(chip); + + chip->read_byte = tango_read_byte; + chip->write_buf = tango_write_buf; + chip->read_buf = tango_read_buf; + chip->select_chip = tango_select_chip; + chip->cmd_ctrl = tango_cmd_ctrl; + chip->dev_ready = tango_dev_ready; + chip->setup_data_interface = tango_set_timings; + chip->options = NAND_USE_BOUNCE_BUFFER | + NAND_NO_SUBPAGE_WRITE | + NAND_WAIT_TCCS; + chip->controller = &nfc->hw; + tchip->base = nfc->pbus_base + (cs * 256); + + nand_set_flash_node(chip, np); + mtd_set_ooblayout(mtd, &tango_nand_ooblayout_ops); + mtd->dev.parent = dev; + + err = nand_scan_ident(mtd, 1, NULL); + if (err) + return err; + + ecc->mode = NAND_ECC_HW; + ecc->algo = NAND_ECC_BCH; + ecc->bytes = DIV_ROUND_UP(ecc->strength * FIELD_ORDER, BITS_PER_BYTE); + + ecc->read_page_raw = tango_read_page_raw; + ecc->write_page_raw = tango_write_page_raw; + ecc->read_page = tango_read_page; + ecc->write_page = tango_write_page; + ecc->read_oob = tango_read_oob; + ecc->write_oob = tango_write_oob; + ecc->options = NAND_ECC_CUSTOM_PAGE_ACCESS; + + err = nand_scan_tail(mtd); + if (err) + return err; + + tchip->xfer_cfg = XFER_CFG(cs, 1, ecc->steps, METADATA_SIZE); + tchip->pkt_0_cfg = PKT_CFG(ecc->size + METADATA_SIZE, ecc->strength); + tchip->pkt_n_cfg = PKT_CFG(ecc->size, ecc->strength); + tchip->bb_cfg = BB_CFG(mtd->writesize, BBM_SIZE); + + err = mtd_device_register(mtd, NULL, 0); + if (err) + return err; + + nfc->chips[cs] = tchip; + + return 0; +} + +static int tango_nand_remove(struct platform_device *pdev) +{ + int cs; + struct tango_nfc *nfc = platform_get_drvdata(pdev); + + dma_release_channel(nfc->chan); + + for (cs = 0; cs < MAX_CS; ++cs) { + if (nfc->chips[cs]) + nand_release(nand_to_mtd(&nfc->chips[cs]->nand_chip)); + } + + return 0; +} + +static int tango_nand_probe(struct platform_device *pdev) +{ + int err; + struct clk *clk; + struct resource *res; + struct tango_nfc *nfc; + struct device_node *np; + + nfc = devm_kzalloc(&pdev->dev, sizeof(*nfc), GFP_KERNEL); + if (!nfc) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + nfc->reg_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(nfc->reg_base)) + return PTR_ERR(nfc->reg_base); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + nfc->mem_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(nfc->mem_base)) + return PTR_ERR(nfc->mem_base); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 2); + nfc->pbus_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(nfc->pbus_base)) + return PTR_ERR(nfc->pbus_base); + + clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + nfc->chan = dma_request_chan(&pdev->dev, "nfc_sbox"); + if (IS_ERR(nfc->chan)) + return PTR_ERR(nfc->chan); + + platform_set_drvdata(pdev, nfc); + nand_hw_control_init(&nfc->hw); + nfc->freq_kHz = clk_get_rate(clk) / 1000; + + for_each_child_of_node(pdev->dev.of_node, np) { + err = chip_init(&pdev->dev, np); + if (err) { + tango_nand_remove(pdev); + return err; + } + } + + return 0; +} + +static const struct of_device_id tango_nand_ids[] = { + { .compatible = "sigma,smp8758-nand" }, + { /* sentinel */ } +}; + +static struct platform_driver tango_nand_driver = { + .probe = tango_nand_probe, + .remove = tango_nand_remove, + .driver = { + .name = "tango-nand", + .of_match_table = tango_nand_ids, + }, +}; + +module_platform_driver(tango_nand_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Sigma Designs"); +MODULE_DESCRIPTION("Tango4 NAND Flash controller driver"); diff --git a/drivers/mtd/nand/tmio_nand.c b/drivers/mtd/nand/tmio_nand.c index 08b30549ec0a..fc5e773f8b60 100644 --- a/drivers/mtd/nand/tmio_nand.c +++ b/drivers/mtd/nand/tmio_nand.c @@ -435,10 +435,10 @@ static int tmio_probe(struct platform_device *dev) nand_chip->waitfunc = tmio_nand_wait; /* Scan to find existence of the device */ - if (nand_scan(mtd, 1)) { - retval = -ENODEV; + retval = nand_scan(mtd, 1); + if (retval) goto err_irq; - } + /* Register the partitions */ retval = mtd_device_parse_register(mtd, NULL, NULL, data ? data->partition : NULL, diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c index 3ad514c44dcb..3ea4bb19e12d 100644 --- a/drivers/mtd/nand/vf610_nfc.c +++ b/drivers/mtd/nand/vf610_nfc.c @@ -717,10 +717,9 @@ static int vf610_nfc_probe(struct platform_device *pdev) vf610_nfc_preinit_controller(nfc); /* first scan to find the device and get the page size */ - if (nand_scan_ident(mtd, 1, NULL)) { - err = -ENXIO; + err = nand_scan_ident(mtd, 1, NULL); + if (err) goto error; - } vf610_nfc_init_controller(nfc); @@ -775,10 +774,9 @@ static int vf610_nfc_probe(struct platform_device *pdev) } /* second phase scan */ - if (nand_scan_tail(mtd)) { - err = -ENXIO; + err = nand_scan_tail(mtd); + if (err) goto error; - } platform_set_drvdata(pdev, mtd); diff --git a/drivers/mtd/spi-nor/cadence-quadspi.c b/drivers/mtd/spi-nor/cadence-quadspi.c index d403ba7b8f43..d489fbd07c12 100644 --- a/drivers/mtd/spi-nor/cadence-quadspi.c +++ b/drivers/mtd/spi-nor/cadence-quadspi.c @@ -1077,12 +1077,14 @@ static int cqspi_setup_flash(struct cqspi_st *cqspi, struct device_node *np) /* Get flash device data */ for_each_available_child_of_node(dev->of_node, np) { - if (of_property_read_u32(np, "reg", &cs)) { + ret = of_property_read_u32(np, "reg", &cs); + if (ret) { dev_err(dev, "Couldn't determine chip select.\n"); goto err; } - if (cs > CQSPI_MAX_CHIPSELECT) { + if (cs >= CQSPI_MAX_CHIPSELECT) { + ret = -EINVAL; dev_err(dev, "Chip select %d out of range.\n", cs); goto err; } diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 5c82e4ef1904..b4d8953fb30a 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -224,7 +224,7 @@ struct fsl_qspi_devtype_data { int driver_data; }; -static struct fsl_qspi_devtype_data vybrid_data = { +static const struct fsl_qspi_devtype_data vybrid_data = { .devtype = FSL_QUADSPI_VYBRID, .rxfifo = 128, .txfifo = 64, @@ -232,7 +232,7 @@ static struct fsl_qspi_devtype_data vybrid_data = { .driver_data = QUADSPI_QUIRK_SWAP_ENDIAN, }; -static struct fsl_qspi_devtype_data imx6sx_data = { +static const struct fsl_qspi_devtype_data imx6sx_data = { .devtype = FSL_QUADSPI_IMX6SX, .rxfifo = 128, .txfifo = 512, @@ -241,7 +241,7 @@ static struct fsl_qspi_devtype_data imx6sx_data = { | QUADSPI_QUIRK_TKT245618, }; -static struct fsl_qspi_devtype_data imx7d_data = { +static const struct fsl_qspi_devtype_data imx7d_data = { .devtype = FSL_QUADSPI_IMX7D, .rxfifo = 512, .txfifo = 512, @@ -250,7 +250,7 @@ static struct fsl_qspi_devtype_data imx7d_data = { | QUADSPI_QUIRK_4X_INT_CLK, }; -static struct fsl_qspi_devtype_data imx6ul_data = { +static const struct fsl_qspi_devtype_data imx6ul_data = { .devtype = FSL_QUADSPI_IMX6UL, .rxfifo = 128, .txfifo = 512, diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index d0fc165d7d66..da7cd69d4857 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -799,6 +799,7 @@ static const struct flash_info spi_nor_ids[] = { { "at25fs040", INFO(0x1f6604, 0, 64 * 1024, 8, SECT_4K) }, { "at25df041a", INFO(0x1f4401, 0, 64 * 1024, 8, SECT_4K) }, + { "at25df321", INFO(0x1f4700, 0, 64 * 1024, 64, SECT_4K) }, { "at25df321a", INFO(0x1f4701, 0, 64 * 1024, 64, SECT_4K) }, { "at25df641", INFO(0x1f4800, 0, 64 * 1024, 128, SECT_4K) }, @@ -825,6 +826,7 @@ static const struct flash_info spi_nor_ids[] = { /* Everspin */ { "mr25h256", CAT25_INFO( 32 * 1024, 1, 256, 2, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, { "mr25h10", CAT25_INFO(128 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, + { "mr25h40", CAT25_INFO(512 * 1024, 1, 256, 3, SPI_NOR_NO_ERASE | SPI_NOR_NO_FR) }, /* Fujitsu */ { "mb85rs1mt", INFO(0x047f27, 0, 128 * 1024, 1, SPI_NOR_NO_ERASE) }, @@ -872,11 +874,13 @@ static const struct flash_info spi_nor_ids[] = { { "mx25l12805d", INFO(0xc22018, 0, 64 * 1024, 256, 0) }, { "mx25l12855e", INFO(0xc22618, 0, 64 * 1024, 256, 0) }, { "mx25l25635e", INFO(0xc22019, 0, 64 * 1024, 512, 0) }, + { "mx25u25635f", INFO(0xc22539, 0, 64 * 1024, 512, SECT_4K) }, { "mx25l25655e", INFO(0xc22619, 0, 64 * 1024, 512, 0) }, { "mx66l51235l", INFO(0xc2201a, 0, 64 * 1024, 1024, SPI_NOR_QUAD_READ) }, { "mx66l1g55g", INFO(0xc2261b, 0, 64 * 1024, 2048, SPI_NOR_QUAD_READ) }, /* Micron */ + { "n25q016a", INFO(0x20bb15, 0, 64 * 1024, 32, SECT_4K | SPI_NOR_QUAD_READ) }, { "n25q032", INFO(0x20ba16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) }, { "n25q032a", INFO(0x20bb16, 0, 64 * 1024, 64, SPI_NOR_QUAD_READ) }, { "n25q064", INFO(0x20ba17, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_QUAD_READ) }, @@ -905,7 +909,7 @@ static const struct flash_info spi_nor_ids[] = { { "s70fl01gs", INFO(0x010221, 0x4d00, 256 * 1024, 256, 0) }, { "s25sl12800", INFO(0x012018, 0x0300, 256 * 1024, 64, 0) }, { "s25sl12801", INFO(0x012018, 0x0301, 64 * 1024, 256, 0) }, - { "s25fl128s", INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SECT_4K | SPI_NOR_QUAD_READ) }, + { "s25fl128s", INFO6(0x012018, 0x4d0180, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, { "s25fl129p0", INFO(0x012018, 0x4d00, 256 * 1024, 64, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, { "s25fl129p1", INFO(0x012018, 0x4d01, 64 * 1024, 256, SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }, { "s25sl004a", INFO(0x010212, 0, 64 * 1024, 8, 0) }, @@ -921,6 +925,7 @@ static const struct flash_info spi_nor_ids[] = { { "s25fl132k", INFO(0x014016, 0, 64 * 1024, 64, SECT_4K) }, { "s25fl164k", INFO(0x014017, 0, 64 * 1024, 128, SECT_4K) }, { "s25fl204k", INFO(0x014013, 0, 64 * 1024, 8, SECT_4K | SPI_NOR_DUAL_READ) }, + { "s25fl208k", INFO(0x014014, 0, 64 * 1024, 16, SECT_4K | SPI_NOR_DUAL_READ) }, /* SST -- large erase sizes are "overlays", "sectors" are 4K */ { "sst25vf040b", INFO(0xbf258d, 0, 64 * 1024, 8, SECT_4K | SST_WRITE) }, @@ -1255,6 +1260,13 @@ static int spansion_quad_enable(struct spi_nor *nor) return -EINVAL; } + ret = spi_nor_wait_till_ready(nor); + if (ret) { + dev_err(nor->dev, + "timeout while writing configuration register\n"); + return ret; + } + /* read back and check it */ ret = read_cr(nor); if (!(ret > 0 && (ret & CR_QUAD_EN_SPAN))) { |