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-rw-r--r--drivers/mmc/host/Kconfig8
-rw-r--r--drivers/mmc/host/Makefile1
-rw-r--r--drivers/mmc/host/android-goldfish.c2
-rw-r--r--drivers/mmc/host/atmel-mci.c1
-rw-r--r--drivers/mmc/host/dw_mmc-rockchip.c3
-rw-r--r--drivers/mmc/host/dw_mmc.c284
-rw-r--r--drivers/mmc/host/omap.c9
-rw-r--r--drivers/mmc/host/omap_hsmmc.c347
-rw-r--r--drivers/mmc/host/pxamci.c200
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c114
-rw-r--r--drivers/mmc/host/sdhci-esdhc.h3
-rw-r--r--drivers/mmc/host/sdhci-msm.c5
-rw-r--r--drivers/mmc/host/sdhci-of-arasan.c4
-rw-r--r--drivers/mmc/host/sdhci-of-at91.c191
-rw-r--r--drivers/mmc/host/sdhci-of-esdhc.c6
-rw-r--r--drivers/mmc/host/sdhci-pci.c1
-rw-r--r--drivers/mmc/host/sdhci-sirf.c4
-rw-r--r--drivers/mmc/host/sdhci.c123
-rw-r--r--drivers/mmc/host/sdhci.h10
-rw-r--r--drivers/mmc/host/sh_mmcif.c2
-rw-r--r--drivers/mmc/host/sunxi-mmc.c2
-rw-r--r--drivers/mmc/host/tmio_mmc_pio.c6
-rw-r--r--drivers/mmc/host/usdhi6rol0.c15
23 files changed, 958 insertions, 383 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 6a0f9c79be26..8a1e3498261e 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -129,6 +129,14 @@ config MMC_SDHCI_OF_ARASAN
If unsure, say N.
+config MMC_SDHCI_OF_AT91
+ tristate "SDHCI OF support for the Atmel SDMMC controller"
+ depends on MMC_SDHCI_PLTFM
+ depends on OF
+ select MMC_SDHCI_IO_ACCESSORS
+ help
+ This selects the Atmel SDMMC driver
+
config MMC_SDHCI_OF_ESDHC
tristate "SDHCI OF support for the Freescale eSDHC controller"
depends on MMC_SDHCI_PLTFM
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index e928d61c5f4b..4f3452afa6ca 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -67,6 +67,7 @@ obj-$(CONFIG_MMC_SDHCI_ESDHC_IMX) += sdhci-esdhc-imx.o
obj-$(CONFIG_MMC_SDHCI_DOVE) += sdhci-dove.o
obj-$(CONFIG_MMC_SDHCI_TEGRA) += sdhci-tegra.o
obj-$(CONFIG_MMC_SDHCI_OF_ARASAN) += sdhci-of-arasan.o
+obj-$(CONFIG_MMC_SDHCI_OF_AT91) += sdhci-of-at91.o
obj-$(CONFIG_MMC_SDHCI_OF_ESDHC) += sdhci-of-esdhc.o
obj-$(CONFIG_MMC_SDHCI_OF_HLWD) += sdhci-of-hlwd.o
obj-$(CONFIG_MMC_SDHCI_BCM_KONA) += sdhci-bcm-kona.o
diff --git a/drivers/mmc/host/android-goldfish.c b/drivers/mmc/host/android-goldfish.c
index b1eac719a4cc..dca5518b0139 100644
--- a/drivers/mmc/host/android-goldfish.c
+++ b/drivers/mmc/host/android-goldfish.c
@@ -118,7 +118,7 @@ struct goldfish_mmc_host {
struct mmc_host *mmc;
struct device *dev;
unsigned char id; /* 16xx chips have 2 MMC blocks */
- void __iomem *virt_base;
+ void *virt_base;
unsigned int phys_base;
int irq;
unsigned char bus_mode;
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 9a39e0b7e583..bf62e429f7fc 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -29,7 +29,6 @@
#include <linux/slab.h>
#include <linux/stat.h>
#include <linux/types.h>
-#include <linux/platform_data/atmel.h>
#include <linux/platform_data/mmc-atmel-mci.h>
#include <linux/mmc/host.h>
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index de15121bba7d..bc76aa22473e 100644
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -73,6 +73,9 @@ static int dw_mci_rockchip_init(struct dw_mci *host)
/* It is slot 8 on Rockchip SoCs */
host->sdio_id0 = 8;
+ /* It needs this quirk on all Rockchip SoCs */
+ host->pdata->quirks |= DW_MCI_QUIRK_BROKEN_DTO;
+
return 0;
}
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 40e9d8e45f25..fcbf5524fd31 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -99,6 +99,9 @@ struct idmac_desc {
__le32 des3; /* buffer 2 physical address */
};
+
+/* Each descriptor can transfer up to 4KB of data in chained mode */
+#define DW_MCI_DESC_DATA_LENGTH 0x1000
#endif /* CONFIG_MMC_DW_IDMAC */
static bool dw_mci_reset(struct dw_mci *host);
@@ -235,8 +238,8 @@ static u32 dw_mci_prepare_command(struct mmc_host *mmc, struct mmc_command *cmd)
struct dw_mci *host = slot->host;
const struct dw_mci_drv_data *drv_data = slot->host->drv_data;
u32 cmdr;
- cmd->error = -EINPROGRESS;
+ cmd->error = -EINPROGRESS;
cmdr = cmd->opcode;
if (cmd->opcode == MMC_STOP_TRANSMISSION ||
@@ -371,7 +374,7 @@ static void dw_mci_start_command(struct dw_mci *host,
cmd->arg, cmd_flags);
mci_writel(host, CMDARG, cmd->arg);
- wmb();
+ wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd_flags);
mci_writel(host, CMD, cmd_flags | SDMMC_CMD_START);
@@ -380,6 +383,7 @@ static void dw_mci_start_command(struct dw_mci *host,
static inline void send_stop_abort(struct dw_mci *host, struct mmc_data *data)
{
struct mmc_command *stop = data->stop ? data->stop : &host->stop_abort;
+
dw_mci_start_command(host, stop, host->stop_cmdr);
}
@@ -462,69 +466,102 @@ static void dw_mci_idmac_complete_dma(struct dw_mci *host)
static void dw_mci_translate_sglist(struct dw_mci *host, struct mmc_data *data,
unsigned int sg_len)
{
+ unsigned int desc_len;
int i;
+
if (host->dma_64bit_address == 1) {
- struct idmac_desc_64addr *desc = host->sg_cpu;
+ struct idmac_desc_64addr *desc_first, *desc_last, *desc;
- for (i = 0; i < sg_len; i++, desc++) {
+ desc_first = desc_last = desc = host->sg_cpu;
+
+ for (i = 0; i < sg_len; i++) {
unsigned int length = sg_dma_len(&data->sg[i]);
+
u64 mem_addr = sg_dma_address(&data->sg[i]);
- /*
- * Set the OWN bit and disable interrupts for this
- * descriptor
- */
- desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
- IDMAC_DES0_CH;
- /* Buffer length */
- IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, length);
-
- /* Physical address to DMA to/from */
- desc->des4 = mem_addr & 0xffffffff;
- desc->des5 = mem_addr >> 32;
+ for ( ; length ; desc++) {
+ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
+ length : DW_MCI_DESC_DATA_LENGTH;
+
+ length -= desc_len;
+
+ /*
+ * Set the OWN bit and disable interrupts
+ * for this descriptor
+ */
+ desc->des0 = IDMAC_DES0_OWN | IDMAC_DES0_DIC |
+ IDMAC_DES0_CH;
+
+ /* Buffer length */
+ IDMAC_64ADDR_SET_BUFFER1_SIZE(desc, desc_len);
+
+ /* Physical address to DMA to/from */
+ desc->des4 = mem_addr & 0xffffffff;
+ desc->des5 = mem_addr >> 32;
+
+ /* Update physical address for the next desc */
+ mem_addr += desc_len;
+
+ /* Save pointer to the last descriptor */
+ desc_last = desc;
+ }
}
/* Set first descriptor */
- desc = host->sg_cpu;
- desc->des0 |= IDMAC_DES0_FD;
+ desc_first->des0 |= IDMAC_DES0_FD;
/* Set last descriptor */
- desc = host->sg_cpu + (i - 1) *
- sizeof(struct idmac_desc_64addr);
- desc->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
- desc->des0 |= IDMAC_DES0_LD;
+ desc_last->des0 &= ~(IDMAC_DES0_CH | IDMAC_DES0_DIC);
+ desc_last->des0 |= IDMAC_DES0_LD;
} else {
- struct idmac_desc *desc = host->sg_cpu;
+ struct idmac_desc *desc_first, *desc_last, *desc;
- for (i = 0; i < sg_len; i++, desc++) {
+ desc_first = desc_last = desc = host->sg_cpu;
+
+ for (i = 0; i < sg_len; i++) {
unsigned int length = sg_dma_len(&data->sg[i]);
+
u32 mem_addr = sg_dma_address(&data->sg[i]);
- /*
- * Set the OWN bit and disable interrupts for this
- * descriptor
- */
- desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
- IDMAC_DES0_DIC | IDMAC_DES0_CH);
- /* Buffer length */
- IDMAC_SET_BUFFER1_SIZE(desc, length);
+ for ( ; length ; desc++) {
+ desc_len = (length <= DW_MCI_DESC_DATA_LENGTH) ?
+ length : DW_MCI_DESC_DATA_LENGTH;
+
+ length -= desc_len;
+
+ /*
+ * Set the OWN bit and disable interrupts
+ * for this descriptor
+ */
+ desc->des0 = cpu_to_le32(IDMAC_DES0_OWN |
+ IDMAC_DES0_DIC |
+ IDMAC_DES0_CH);
- /* Physical address to DMA to/from */
- desc->des2 = cpu_to_le32(mem_addr);
+ /* Buffer length */
+ IDMAC_SET_BUFFER1_SIZE(desc, desc_len);
+
+ /* Physical address to DMA to/from */
+ desc->des2 = cpu_to_le32(mem_addr);
+
+ /* Update physical address for the next desc */
+ mem_addr += desc_len;
+
+ /* Save pointer to the last descriptor */
+ desc_last = desc;
+ }
}
/* Set first descriptor */
- desc = host->sg_cpu;
- desc->des0 |= cpu_to_le32(IDMAC_DES0_FD);
+ desc_first->des0 |= cpu_to_le32(IDMAC_DES0_FD);
/* Set last descriptor */
- desc = host->sg_cpu + (i - 1) * sizeof(struct idmac_desc);
- desc->des0 &= cpu_to_le32(~(IDMAC_DES0_CH | IDMAC_DES0_DIC));
- desc->des0 |= cpu_to_le32(IDMAC_DES0_LD);
+ desc_last->des0 &= cpu_to_le32(~(IDMAC_DES0_CH |
+ IDMAC_DES0_DIC));
+ desc_last->des0 |= cpu_to_le32(IDMAC_DES0_LD);
}
- wmb();
+ wmb(); /* drain writebuffer */
}
static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
@@ -542,6 +579,7 @@ static void dw_mci_idmac_start_dma(struct dw_mci *host, unsigned int sg_len)
temp |= SDMMC_CTRL_USE_IDMAC;
mci_writel(host, CTRL, temp);
+ /* drain writebuffer */
wmb();
/* Enable the IDMAC */
@@ -589,7 +627,9 @@ static int dw_mci_idmac_init(struct dw_mci *host)
host->ring_size = PAGE_SIZE / sizeof(struct idmac_desc);
/* Forward link the descriptor list */
- for (i = 0, p = host->sg_cpu; i < host->ring_size - 1; i++, p++) {
+ for (i = 0, p = host->sg_cpu;
+ i < host->ring_size - 1;
+ i++, p++) {
p->des3 = cpu_to_le32(host->sg_dma +
(sizeof(struct idmac_desc) * (i + 1)));
p->des1 = 0;
@@ -718,7 +758,7 @@ static void dw_mci_adjust_fifoth(struct dw_mci *host, struct mmc_data *data)
u32 fifo_width = 1 << host->data_shift;
u32 blksz_depth = blksz / fifo_width, fifoth_val;
u32 msize = 0, rx_wmark = 1, tx_wmark, tx_wmark_invers;
- int idx = (sizeof(mszs) / sizeof(mszs[0])) - 1;
+ int idx = ARRAY_SIZE(mszs) - 1;
tx_wmark = (host->fifo_depth) / 2;
tx_wmark_invers = host->fifo_depth - tx_wmark;
@@ -843,6 +883,7 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data)
static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
{
unsigned long irqflags;
+ int flags = SG_MITER_ATOMIC;
u32 temp;
data->error = -EINPROGRESS;
@@ -859,7 +900,6 @@ static void dw_mci_submit_data(struct dw_mci *host, struct mmc_data *data)
}
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
@@ -906,7 +946,7 @@ static void mci_send_cmd(struct dw_mci_slot *slot, u32 cmd, u32 arg)
unsigned int cmd_status = 0;
mci_writel(host, CMDARG, arg);
- wmb();
+ wmb(); /* drain writebuffer */
dw_mci_wait_while_busy(host, cmd);
mci_writel(host, CMD, SDMMC_CMD_START | cmd);
@@ -1019,7 +1059,7 @@ static void __dw_mci_start_request(struct dw_mci *host,
if (data) {
dw_mci_submit_data(host, data);
- wmb();
+ wmb(); /* drain writebuffer */
}
dw_mci_start_command(host, cmd, cmdflags);
@@ -1384,14 +1424,15 @@ static int dw_mci_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
const struct dw_mci_drv_data *drv_data = host->drv_data;
- int err = -ENOSYS;
+ int err = -EINVAL;
if (drv_data && drv_data->execute_tuning)
err = drv_data->execute_tuning(slot);
return err;
}
-static int dw_mci_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_ios *ios)
+static int dw_mci_prepare_hs400_tuning(struct mmc_host *mmc,
+ struct mmc_ios *ios)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
struct dw_mci *host = slot->host;
@@ -1533,6 +1574,20 @@ static int dw_mci_data_complete(struct dw_mci *host, struct mmc_data *data)
return data->error;
}
+static void dw_mci_set_drto(struct dw_mci *host)
+{
+ unsigned int drto_clks;
+ unsigned int drto_ms;
+
+ drto_clks = mci_readl(host, TMOUT) >> 8;
+ drto_ms = DIV_ROUND_UP(drto_clks, host->bus_hz / 1000);
+
+ /* add a bit spare time */
+ drto_ms += 10;
+
+ mod_timer(&host->dto_timer, jiffies + msecs_to_jiffies(drto_ms));
+}
+
static void dw_mci_tasklet_func(unsigned long priv)
{
struct dw_mci *host = (struct dw_mci *)priv;
@@ -1610,8 +1665,16 @@ static void dw_mci_tasklet_func(unsigned long priv)
}
if (!test_and_clear_bit(EVENT_XFER_COMPLETE,
- &host->pending_events))
+ &host->pending_events)) {
+ /*
+ * If all data-related interrupts don't come
+ * within the given time in reading data state.
+ */
+ if ((host->quirks & DW_MCI_QUIRK_BROKEN_DTO) &&
+ (host->dir_status == DW_MCI_RECV_STATUS))
+ dw_mci_set_drto(host);
break;
+ }
set_bit(EVENT_XFER_COMPLETE, &host->completed_events);
@@ -1644,8 +1707,17 @@ static void dw_mci_tasklet_func(unsigned long priv)
case STATE_DATA_BUSY:
if (!test_and_clear_bit(EVENT_DATA_COMPLETE,
- &host->pending_events))
+ &host->pending_events)) {
+ /*
+ * If data error interrupt comes but data over
+ * interrupt doesn't come within the given time.
+ * in reading data state.
+ */
+ if ((host->quirks & DW_MCI_QUIRK_BROKEN_DTO) &&
+ (host->dir_status == DW_MCI_RECV_STATUS))
+ dw_mci_set_drto(host);
break;
+ }
host->data = NULL;
set_bit(EVENT_DATA_COMPLETE, &host->completed_events);
@@ -1743,7 +1815,7 @@ static int dw_mci_push_part_bytes(struct dw_mci *host, void *buf, int cnt)
/* pull first bytes from part_buf, only use during pull */
static int dw_mci_pull_part_bytes(struct dw_mci *host, void *buf, int cnt)
{
- cnt = min(cnt, (int)host->part_buf_count);
+ cnt = min_t(int, cnt, host->part_buf_count);
if (cnt) {
memcpy(buf, (void *)&host->part_buf + host->part_buf_start,
cnt);
@@ -1769,6 +1841,7 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
/* try and push anything in the part_buf */
if (unlikely(host->part_buf_count)) {
int len = dw_mci_push_part_bytes(host, buf, cnt);
+
buf += len;
cnt -= len;
if (host->part_buf_count == 2) {
@@ -1795,6 +1868,7 @@ static void dw_mci_push_data16(struct dw_mci *host, void *buf, int cnt)
#endif
{
u16 *pdata = buf;
+
for (; cnt >= 2; cnt -= 2)
mci_fifo_writew(host->fifo_reg, *pdata++);
buf = pdata;
@@ -1819,6 +1893,7 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
int len = min(cnt & -2, (int)sizeof(aligned_buf));
int items = len >> 1;
int i;
+
for (i = 0; i < items; ++i)
aligned_buf[i] = mci_fifo_readw(host->fifo_reg);
/* memcpy from aligned buffer into output buffer */
@@ -1830,6 +1905,7 @@ static void dw_mci_pull_data16(struct dw_mci *host, void *buf, int cnt)
#endif
{
u16 *pdata = buf;
+
for (; cnt >= 2; cnt -= 2)
*pdata++ = mci_fifo_readw(host->fifo_reg);
buf = pdata;
@@ -1848,6 +1924,7 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
/* try and push anything in the part_buf */
if (unlikely(host->part_buf_count)) {
int len = dw_mci_push_part_bytes(host, buf, cnt);
+
buf += len;
cnt -= len;
if (host->part_buf_count == 4) {
@@ -1874,6 +1951,7 @@ static void dw_mci_push_data32(struct dw_mci *host, void *buf, int cnt)
#endif
{
u32 *pdata = buf;
+
for (; cnt >= 4; cnt -= 4)
mci_fifo_writel(host->fifo_reg, *pdata++);
buf = pdata;
@@ -1898,6 +1976,7 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
int len = min(cnt & -4, (int)sizeof(aligned_buf));
int items = len >> 2;
int i;
+
for (i = 0; i < items; ++i)
aligned_buf[i] = mci_fifo_readl(host->fifo_reg);
/* memcpy from aligned buffer into output buffer */
@@ -1909,6 +1988,7 @@ static void dw_mci_pull_data32(struct dw_mci *host, void *buf, int cnt)
#endif
{
u32 *pdata = buf;
+
for (; cnt >= 4; cnt -= 4)
*pdata++ = mci_fifo_readl(host->fifo_reg);
buf = pdata;
@@ -1927,6 +2007,7 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
/* try and push anything in the part_buf */
if (unlikely(host->part_buf_count)) {
int len = dw_mci_push_part_bytes(host, buf, cnt);
+
buf += len;
cnt -= len;
@@ -1954,6 +2035,7 @@ static void dw_mci_push_data64(struct dw_mci *host, void *buf, int cnt)
#endif
{
u64 *pdata = buf;
+
for (; cnt >= 8; cnt -= 8)
mci_fifo_writeq(host->fifo_reg, *pdata++);
buf = pdata;
@@ -1978,6 +2060,7 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
int len = min(cnt & -8, (int)sizeof(aligned_buf));
int items = len >> 3;
int i;
+
for (i = 0; i < items; ++i)
aligned_buf[i] = mci_fifo_readq(host->fifo_reg);
@@ -1990,6 +2073,7 @@ static void dw_mci_pull_data64(struct dw_mci *host, void *buf, int cnt)
#endif
{
u64 *pdata = buf;
+
for (; cnt >= 8; cnt -= 8)
*pdata++ = mci_fifo_readq(host->fifo_reg);
buf = pdata;
@@ -2065,7 +2149,7 @@ static void dw_mci_read_data_pio(struct dw_mci *host, bool dto)
done:
sg_miter_stop(sg_miter);
host->sg = NULL;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
}
@@ -2119,7 +2203,7 @@ static void dw_mci_write_data_pio(struct dw_mci *host)
done:
sg_miter_stop(sg_miter);
host->sg = NULL;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
set_bit(EVENT_XFER_COMPLETE, &host->pending_events);
}
@@ -2128,7 +2212,7 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
if (!host->cmd_status)
host->cmd_status = status;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
tasklet_schedule(&host->tasklet);
@@ -2192,7 +2276,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
if (pending & DW_MCI_CMD_ERROR_FLAGS) {
mci_writel(host, RINTSTS, DW_MCI_CMD_ERROR_FLAGS);
host->cmd_status = pending;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
}
@@ -2200,16 +2284,19 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
/* if there is an error report DATA_ERROR */
mci_writel(host, RINTSTS, DW_MCI_DATA_ERROR_FLAGS);
host->data_status = pending;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
set_bit(EVENT_DATA_ERROR, &host->pending_events);
tasklet_schedule(&host->tasklet);
}
if (pending & SDMMC_INT_DATA_OVER) {
+ if (host->quirks & DW_MCI_QUIRK_BROKEN_DTO)
+ del_timer(&host->dto_timer);
+
mci_writel(host, RINTSTS, SDMMC_INT_DATA_OVER);
if (!host->data_status)
host->data_status = pending;
- smp_wmb();
+ smp_wmb(); /* drain writebuffer */
if (host->dir_status == DW_MCI_RECV_STATUS) {
if (host->sg != NULL)
dw_mci_read_data_pio(host, true);
@@ -2383,27 +2470,20 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
if (ret)
goto err_host_allocated;
- 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;
- mmc->max_blk_count = host->pdata->blk_settings->max_blk_count;
- mmc->max_req_size = host->pdata->blk_settings->max_req_size;
- mmc->max_seg_size = host->pdata->blk_settings->max_seg_size;
- } else {
- /* Useful defaults if platform data is unset. */
-#ifdef CONFIG_MMC_DW_IDMAC
+ /* Useful defaults if platform data is unset. */
+ if (host->use_dma) {
mmc->max_segs = host->ring_size;
mmc->max_blk_size = 65536;
mmc->max_seg_size = 0x1000;
mmc->max_req_size = mmc->max_seg_size * host->ring_size;
mmc->max_blk_count = mmc->max_req_size / 512;
-#else
+ } 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_req_size = mmc->max_blk_size *
+ mmc->max_blk_count;
mmc->max_seg_size = mmc->max_req_size;
-#endif /* CONFIG_MMC_DW_IDMAC */
}
if (dw_mci_get_cd(mmc))
@@ -2473,8 +2553,8 @@ static void dw_mci_init_dma(struct dw_mci *host)
if (host->dma_ops->init && host->dma_ops->start &&
host->dma_ops->stop && host->dma_ops->cleanup) {
if (host->dma_ops->init(host)) {
- dev_err(host->dev, "%s: Unable to initialize "
- "DMA Controller.\n", __func__);
+ dev_err(host->dev, "%s: Unable to initialize DMA Controller.\n",
+ __func__);
goto no_dma;
}
} else {
@@ -2488,7 +2568,6 @@ static void dw_mci_init_dma(struct dw_mci *host)
no_dma:
dev_info(host->dev, "Using PIO mode.\n");
host->use_dma = 0;
- return;
}
static bool dw_mci_ctrl_reset(struct dw_mci *host, u32 reset)
@@ -2542,6 +2621,7 @@ static bool dw_mci_reset(struct dw_mci *host)
if (host->use_dma) {
unsigned long timeout = jiffies + msecs_to_jiffies(500);
u32 status;
+
do {
status = mci_readl(host, STATUS);
if (!(status & SDMMC_STATUS_DMA_REQ))
@@ -2551,8 +2631,8 @@ static bool dw_mci_reset(struct dw_mci *host)
if (status & SDMMC_STATUS_DMA_REQ) {
dev_err(host->dev,
- "%s: Timeout waiting for dma_req to "
- "clear during reset\n", __func__);
+ "%s: Timeout waiting for dma_req to clear during reset\n",
+ __func__);
goto ciu_out;
}
@@ -2563,8 +2643,8 @@ static bool dw_mci_reset(struct dw_mci *host)
} else {
/* if the controller reset bit did clear, then set clock regs */
if (!(mci_readl(host, CTRL) & SDMMC_CTRL_RESET)) {
- dev_err(host->dev, "%s: fifo/dma reset bits didn't "
- "clear but ciu was reset, doing clock update\n",
+ dev_err(host->dev,
+ "%s: fifo/dma reset bits didn't clear but ciu was reset, doing clock update\n",
__func__);
goto ciu_out;
}
@@ -2598,6 +2678,28 @@ static void dw_mci_cmd11_timer(unsigned long arg)
tasklet_schedule(&host->tasklet);
}
+static void dw_mci_dto_timer(unsigned long arg)
+{
+ struct dw_mci *host = (struct dw_mci *)arg;
+
+ switch (host->state) {
+ case STATE_SENDING_DATA:
+ case STATE_DATA_BUSY:
+ /*
+ * If DTO interrupt does NOT come in sending data state,
+ * we should notify the driver to terminate current transfer
+ * and report a data timeout to the core.
+ */
+ host->data_status = SDMMC_INT_DRTO;
+ set_bit(EVENT_DATA_ERROR, &host->pending_events);
+ set_bit(EVENT_DATA_COMPLETE, &host->pending_events);
+ tasklet_schedule(&host->tasklet);
+ break;
+ default:
+ break;
+ }
+}
+
#ifdef CONFIG_OF
static struct dw_mci_of_quirks {
char *quirk;
@@ -2625,8 +2727,8 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
/* find out number of slots supported */
if (of_property_read_u32(dev->of_node, "num-slots",
&pdata->num_slots)) {
- dev_info(dev, "num-slots property not found, "
- "assuming 1 slot is available\n");
+ dev_info(dev,
+ "num-slots property not found, assuming 1 slot is available\n");
pdata->num_slots = 1;
}
@@ -2636,8 +2738,8 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
pdata->quirks |= of_quirks[idx].id;
if (of_property_read_u32(np, "fifo-depth", &pdata->fifo_depth))
- dev_info(dev, "fifo-depth property not found, using "
- "value of FIFOTH register as default\n");
+ dev_info(dev,
+ "fifo-depth property not found, using value of FIFOTH register as default\n");
of_property_read_u32(np, "card-detect-delay", &pdata->detect_delay_ms);
@@ -2650,8 +2752,10 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
return ERR_PTR(ret);
}
- if (of_find_property(np, "supports-highspeed", NULL))
+ if (of_find_property(np, "supports-highspeed", NULL)) {
+ dev_info(dev, "supports-highspeed property is deprecated.\n");
pdata->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
+ }
return pdata;
}
@@ -2706,7 +2810,7 @@ int dw_mci_probe(struct dw_mci *host)
}
}
- if (host->pdata->num_slots > 1) {
+ if (host->pdata->num_slots < 1) {
dev_err(host->dev,
"Platform data must supply num_slots.\n");
return -ENODEV;
@@ -2774,6 +2878,10 @@ int dw_mci_probe(struct dw_mci *host)
host->quirks = host->pdata->quirks;
+ if (host->quirks & DW_MCI_QUIRK_BROKEN_DTO)
+ setup_timer(&host->dto_timer,
+ dw_mci_dto_timer, (unsigned long)host);
+
spin_lock_init(&host->lock);
spin_lock_init(&host->irq_lock);
INIT_LIST_HEAD(&host->queue);
@@ -2874,11 +2982,11 @@ int dw_mci_probe(struct dw_mci *host)
mci_writel(host, INTMASK, SDMMC_INT_CMD_DONE | SDMMC_INT_DATA_OVER |
SDMMC_INT_TXDR | SDMMC_INT_RXDR |
DW_MCI_ERROR_FLAGS);
- mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE); /* Enable mci interrupt */
+ /* Enable mci interrupt */
+ mci_writel(host, CTRL, SDMMC_CTRL_INT_ENABLE);
- dev_info(host->dev, "DW MMC controller at irq %d, "
- "%d bit host data width, "
- "%u deep fifo\n",
+ dev_info(host->dev,
+ "DW MMC controller at irq %d,%d bit host data width,%u deep fifo\n",
host->irq, width, fifo_size);
/* We need at least one slot to succeed */
@@ -2893,8 +3001,9 @@ int dw_mci_probe(struct dw_mci *host)
if (init_slots) {
dev_info(host->dev, "%d slots initialized\n", init_slots);
} else {
- dev_dbg(host->dev, "attempted to initialize %d slots, "
- "but failed on all\n", host->num_slots);
+ dev_dbg(host->dev,
+ "attempted to initialize %d slots, but failed on all\n",
+ host->num_slots);
goto err_dmaunmap;
}
@@ -2992,6 +3101,7 @@ int dw_mci_resume(struct dw_mci *host)
for (i = 0; i < host->num_slots; i++) {
struct dw_mci_slot *slot = host->slot[i];
+
if (!slot)
continue;
if (slot->mmc->pm_flags & MMC_PM_KEEP_POWER) {
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 68dd6c79c378..b763b11ed9e1 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -948,6 +948,7 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
{
struct mmc_data *data = req->data;
int i, use_dma = 1, block_size;
+ struct scatterlist *sg;
unsigned sg_len;
host->data = data;
@@ -972,8 +973,8 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
sg_len = (data->blocks == 1) ? 1 : data->sg_len;
/* Only do DMA for entire blocks */
- for (i = 0; i < sg_len; i++) {
- if ((data->sg[i].length % block_size) != 0) {
+ for_each_sg(data->sg, sg, sg_len, i) {
+ if ((sg->length % block_size) != 0) {
use_dma = 0;
break;
}
@@ -1419,8 +1420,10 @@ static int mmc_omap_probe(struct platform_device *pdev)
host->reg_shift = (mmc_omap7xx() ? 1 : 2);
host->mmc_omap_wq = alloc_workqueue("mmc_omap", 0, 0);
- if (!host->mmc_omap_wq)
+ if (!host->mmc_omap_wq) {
+ ret = -ENOMEM;
goto err_plat_cleanup;
+ }
for (i = 0; i < pdata->nr_slots; i++) {
ret = mmc_omap_new_slot(host, i);
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 4d1203236890..781e4db31767 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -181,18 +181,9 @@ struct omap_hsmmc_host {
struct mmc_data *data;
struct clk *fclk;
struct clk *dbclk;
- /*
- * vcc == configured supply
- * vcc_aux == optional
- * - MMC1, supply for DAT4..DAT7
- * - MMC2/MMC2, external level shifter voltage supply, for
- * chip (SDIO, eMMC, etc) or transceiver (MMC2 only)
- */
- struct regulator *vcc;
- struct regulator *vcc_aux;
struct regulator *pbias;
- bool pbias_enabled;
void __iomem *base;
+ int vqmmc_enabled;
resource_size_t mapbase;
spinlock_t irq_lock; /* Prevent races with irq handler */
unsigned int dma_len;
@@ -213,7 +204,6 @@ struct omap_hsmmc_host {
int context_loss;
int protect_card;
int reqs_blocked;
- int use_reg;
int req_in_progress;
unsigned long clk_rate;
unsigned int flags;
@@ -254,32 +244,133 @@ static int omap_hsmmc_get_cover_state(struct device *dev)
return mmc_gpio_get_cd(host->mmc);
}
-#ifdef CONFIG_REGULATOR
+static int omap_hsmmc_enable_supply(struct mmc_host *mmc)
+{
+ int ret;
+ struct omap_hsmmc_host *host = mmc_priv(mmc);
+ struct mmc_ios *ios = &mmc->ios;
+
+ if (mmc->supply.vmmc) {
+ ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
+ if (ret)
+ return ret;
+ }
+
+ /* Enable interface voltage rail, if needed */
+ if (mmc->supply.vqmmc && !host->vqmmc_enabled) {
+ ret = regulator_enable(mmc->supply.vqmmc);
+ if (ret) {
+ dev_err(mmc_dev(mmc), "vmmc_aux reg enable failed\n");
+ goto err_vqmmc;
+ }
+ host->vqmmc_enabled = 1;
+ }
+
+ return 0;
+
+err_vqmmc:
+ if (mmc->supply.vmmc)
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+
+ return ret;
+}
+
+static int omap_hsmmc_disable_supply(struct mmc_host *mmc)
+{
+ int ret;
+ int status;
+ struct omap_hsmmc_host *host = mmc_priv(mmc);
+
+ if (mmc->supply.vqmmc && host->vqmmc_enabled) {
+ ret = regulator_disable(mmc->supply.vqmmc);
+ if (ret) {
+ dev_err(mmc_dev(mmc), "vmmc_aux reg disable failed\n");
+ return ret;
+ }
+ host->vqmmc_enabled = 0;
+ }
+
+ if (mmc->supply.vmmc) {
+ ret = mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
+ if (ret)
+ goto err_set_ocr;
+ }
+
+ return 0;
+
+err_set_ocr:
+ if (mmc->supply.vqmmc) {
+ status = regulator_enable(mmc->supply.vqmmc);
+ if (status)
+ dev_err(mmc_dev(mmc), "vmmc_aux re-enable failed\n");
+ }
+
+ return ret;
+}
+
+static int omap_hsmmc_set_pbias(struct omap_hsmmc_host *host, bool power_on,
+ int vdd)
+{
+ int ret;
+
+ if (!host->pbias)
+ return 0;
+
+ if (power_on) {
+ if (vdd <= VDD_165_195)
+ ret = regulator_set_voltage(host->pbias, VDD_1V8,
+ VDD_1V8);
+ else
+ ret = regulator_set_voltage(host->pbias, VDD_3V0,
+ VDD_3V0);
+ if (ret < 0) {
+ dev_err(host->dev, "pbias set voltage fail\n");
+ return ret;
+ }
+
+ if (!regulator_is_enabled(host->pbias)) {
+ ret = regulator_enable(host->pbias);
+ if (ret) {
+ dev_err(host->dev, "pbias reg enable fail\n");
+ return ret;
+ }
+ }
+ } else {
+ if (regulator_is_enabled(host->pbias)) {
+ ret = regulator_disable(host->pbias);
+ if (ret) {
+ dev_err(host->dev, "pbias reg disable fail\n");
+ return ret;
+ }
+ }
+ }
+
+ return 0;
+}
static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
{
struct omap_hsmmc_host *host =
platform_get_drvdata(to_platform_device(dev));
+ struct mmc_host *mmc = host->mmc;
int ret = 0;
+ if (mmc_pdata(host)->set_power)
+ return mmc_pdata(host)->set_power(dev, power_on, vdd);
+
/*
* If we don't see a Vcc regulator, assume it's a fixed
* voltage always-on regulator.
*/
- if (!host->vcc)
+ if (!mmc->supply.vmmc)
return 0;
if (mmc_pdata(host)->before_set_reg)
mmc_pdata(host)->before_set_reg(dev, power_on, vdd);
- if (host->pbias) {
- if (host->pbias_enabled == 1) {
- ret = regulator_disable(host->pbias);
- if (!ret)
- host->pbias_enabled = 0;
- }
- regulator_set_voltage(host->pbias, VDD_3V0, VDD_3V0);
- }
+ ret = omap_hsmmc_set_pbias(host, false, 0);
+ if (ret)
+ return ret;
/*
* Assume Vcc regulator is used only to power the card ... OMAP
@@ -295,129 +386,138 @@ static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
* chips/cards need an interface voltage rail too.
*/
if (power_on) {
- if (host->vcc)
- ret = mmc_regulator_set_ocr(host->mmc, host->vcc, vdd);
- /* Enable interface voltage rail, if needed */
- if (ret == 0 && host->vcc_aux) {
- ret = regulator_enable(host->vcc_aux);
- if (ret < 0 && host->vcc)
- ret = mmc_regulator_set_ocr(host->mmc,
- host->vcc, 0);
- }
- } else {
- /* Shut down the rail */
- if (host->vcc_aux)
- ret = regulator_disable(host->vcc_aux);
- if (host->vcc) {
- /* Then proceed to shut down the local regulator */
- ret = mmc_regulator_set_ocr(host->mmc,
- host->vcc, 0);
- }
- }
-
- if (host->pbias) {
- if (vdd <= VDD_165_195)
- ret = regulator_set_voltage(host->pbias, VDD_1V8,
- VDD_1V8);
- else
- ret = regulator_set_voltage(host->pbias, VDD_3V0,
- VDD_3V0);
- if (ret < 0)
- goto error_set_power;
+ ret = omap_hsmmc_enable_supply(mmc);
+ if (ret)
+ return ret;
- if (host->pbias_enabled == 0) {
- ret = regulator_enable(host->pbias);
- if (!ret)
- host->pbias_enabled = 1;
- }
+ ret = omap_hsmmc_set_pbias(host, true, vdd);
+ if (ret)
+ goto err_set_voltage;
+ } else {
+ ret = omap_hsmmc_disable_supply(mmc);
+ if (ret)
+ return ret;
}
if (mmc_pdata(host)->after_set_reg)
mmc_pdata(host)->after_set_reg(dev, power_on, vdd);
-error_set_power:
+ return 0;
+
+err_set_voltage:
+ omap_hsmmc_disable_supply(mmc);
+
return ret;
}
-static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
+static int omap_hsmmc_disable_boot_regulator(struct regulator *reg)
{
- struct regulator *reg;
- int ocr_value = 0;
+ int ret;
- reg = devm_regulator_get(host->dev, "vmmc");
- if (IS_ERR(reg)) {
- dev_err(host->dev, "unable to get vmmc regulator %ld\n",
- PTR_ERR(reg));
- return PTR_ERR(reg);
- } else {
- host->vcc = reg;
- ocr_value = mmc_regulator_get_ocrmask(reg);
- if (!mmc_pdata(host)->ocr_mask) {
- mmc_pdata(host)->ocr_mask = ocr_value;
- } else {
- if (!(mmc_pdata(host)->ocr_mask & ocr_value)) {
- dev_err(host->dev, "ocrmask %x is not supported\n",
- mmc_pdata(host)->ocr_mask);
- mmc_pdata(host)->ocr_mask = 0;
- return -EINVAL;
- }
- }
+ if (!reg)
+ return 0;
+
+ if (regulator_is_enabled(reg)) {
+ ret = regulator_enable(reg);
+ if (ret)
+ return ret;
+
+ ret = regulator_disable(reg);
+ if (ret)
+ return ret;
}
- mmc_pdata(host)->set_power = omap_hsmmc_set_power;
- /* Allow an aux regulator */
- reg = devm_regulator_get_optional(host->dev, "vmmc_aux");
- host->vcc_aux = IS_ERR(reg) ? NULL : reg;
+ return 0;
+}
- reg = devm_regulator_get_optional(host->dev, "pbias");
- host->pbias = IS_ERR(reg) ? NULL : reg;
+static int omap_hsmmc_disable_boot_regulators(struct omap_hsmmc_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+ int ret;
- /* For eMMC do not power off when not in sleep state */
- if (mmc_pdata(host)->no_regulator_off_init)
- return 0;
/*
- * To disable boot_on regulator, enable regulator
- * to increase usecount and then disable it.
+ * disable regulators enabled during boot and get the usecount
+ * right so that regulators can be enabled/disabled by checking
+ * the return value of regulator_is_enabled
*/
- if ((host->vcc && regulator_is_enabled(host->vcc) > 0) ||
- (host->vcc_aux && regulator_is_enabled(host->vcc_aux))) {
- int vdd = ffs(mmc_pdata(host)->ocr_mask) - 1;
+ ret = omap_hsmmc_disable_boot_regulator(mmc->supply.vmmc);
+ if (ret) {
+ dev_err(host->dev, "fail to disable boot enabled vmmc reg\n");
+ return ret;
+ }
+
+ ret = omap_hsmmc_disable_boot_regulator(mmc->supply.vqmmc);
+ if (ret) {
+ dev_err(host->dev,
+ "fail to disable boot enabled vmmc_aux reg\n");
+ return ret;
+ }
- mmc_pdata(host)->set_power(host->dev, 1, vdd);
- mmc_pdata(host)->set_power(host->dev, 0, 0);
+ ret = omap_hsmmc_disable_boot_regulator(host->pbias);
+ if (ret) {
+ dev_err(host->dev,
+ "failed to disable boot enabled pbias reg\n");
+ return ret;
}
return 0;
}
-static void omap_hsmmc_reg_put(struct omap_hsmmc_host *host)
+static int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
{
- mmc_pdata(host)->set_power = NULL;
-}
+ int ocr_value = 0;
+ int ret;
+ struct mmc_host *mmc = host->mmc;
-static inline int omap_hsmmc_have_reg(void)
-{
- return 1;
-}
+ if (mmc_pdata(host)->set_power)
+ return 0;
-#else
+ mmc->supply.vmmc = devm_regulator_get_optional(host->dev, "vmmc");
+ if (IS_ERR(mmc->supply.vmmc)) {
+ ret = PTR_ERR(mmc->supply.vmmc);
+ if (ret != -ENODEV)
+ return ret;
+ dev_dbg(host->dev, "unable to get vmmc regulator %ld\n",
+ PTR_ERR(mmc->supply.vmmc));
+ mmc->supply.vmmc = NULL;
+ } else {
+ ocr_value = mmc_regulator_get_ocrmask(mmc->supply.vmmc);
+ if (ocr_value > 0)
+ mmc_pdata(host)->ocr_mask = ocr_value;
+ }
-static inline int omap_hsmmc_reg_get(struct omap_hsmmc_host *host)
-{
- return -EINVAL;
-}
+ /* Allow an aux regulator */
+ mmc->supply.vqmmc = devm_regulator_get_optional(host->dev, "vmmc_aux");
+ if (IS_ERR(mmc->supply.vqmmc)) {
+ ret = PTR_ERR(mmc->supply.vqmmc);
+ if (ret != -ENODEV)
+ return ret;
+ dev_dbg(host->dev, "unable to get vmmc_aux regulator %ld\n",
+ PTR_ERR(mmc->supply.vqmmc));
+ mmc->supply.vqmmc = NULL;
+ }
-static inline void omap_hsmmc_reg_put(struct omap_hsmmc_host *host)
-{
-}
+ host->pbias = devm_regulator_get_optional(host->dev, "pbias");
+ if (IS_ERR(host->pbias)) {
+ ret = PTR_ERR(host->pbias);
+ if (ret != -ENODEV)
+ return ret;
+ dev_dbg(host->dev, "unable to get pbias regulator %ld\n",
+ PTR_ERR(host->pbias));
+ host->pbias = NULL;
+ }
+
+ /* For eMMC do not power off when not in sleep state */
+ if (mmc_pdata(host)->no_regulator_off_init)
+ return 0;
+
+ ret = omap_hsmmc_disable_boot_regulators(host);
+ if (ret)
+ return ret;
-static inline int omap_hsmmc_have_reg(void)
-{
return 0;
}
-#endif
-
static irqreturn_t omap_hsmmc_cover_irq(int irq, void *dev_id);
static int omap_hsmmc_gpio_init(struct mmc_host *mmc,
@@ -1149,11 +1249,11 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
clk_disable_unprepare(host->dbclk);
/* Turn the power off */
- ret = mmc_pdata(host)->set_power(host->dev, 0, 0);
+ ret = omap_hsmmc_set_power(host->dev, 0, 0);
/* Turn the power ON with given VDD 1.8 or 3.0v */
if (!ret)
- ret = mmc_pdata(host)->set_power(host->dev, 1, vdd);
+ ret = omap_hsmmc_set_power(host->dev, 1, vdd);
pm_runtime_get_sync(host->dev);
if (host->dbclk)
clk_prepare_enable(host->dbclk);
@@ -1552,10 +1652,10 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (ios->power_mode != host->power_mode) {
switch (ios->power_mode) {
case MMC_POWER_OFF:
- mmc_pdata(host)->set_power(host->dev, 0, 0);
+ omap_hsmmc_set_power(host->dev, 0, 0);
break;
case MMC_POWER_UP:
- mmc_pdata(host)->set_power(host->dev, 1, ios->vdd);
+ omap_hsmmc_set_power(host->dev, 1, ios->vdd);
break;
case MMC_POWER_ON:
do_send_init_stream = 1;
@@ -1953,7 +2053,7 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
host->base = base + pdata->reg_offset;
host->power_mode = MMC_POWER_OFF;
host->next_data.cookie = 1;
- host->pbias_enabled = 0;
+ host->vqmmc_enabled = 0;
ret = omap_hsmmc_gpio_init(mmc, host, pdata);
if (ret)
@@ -2078,12 +2178,9 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
goto err_irq;
}
- if (omap_hsmmc_have_reg() && !mmc_pdata(host)->set_power) {
- ret = omap_hsmmc_reg_get(host);
- if (ret)
- goto err_irq;
- host->use_reg = 1;
- }
+ ret = omap_hsmmc_reg_get(host);
+ if (ret)
+ goto err_irq;
mmc->ocr_avail = mmc_pdata(host)->ocr_mask;
@@ -2125,8 +2222,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
err_slot_name:
mmc_remove_host(mmc);
- if (host->use_reg)
- omap_hsmmc_reg_put(host);
err_irq:
device_init_wakeup(&pdev->dev, false);
if (host->tx_chan)
@@ -2150,8 +2245,6 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
pm_runtime_get_sync(host->dev);
mmc_remove_host(host->mmc);
- if (host->use_reg)
- omap_hsmmc_reg_put(host);
if (host->tx_chan)
dma_release_channel(host->tx_chan);
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 1b6d0bfe35f5..1420f29628c7 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -22,7 +22,9 @@
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
+#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
+#include <linux/dma/pxa-dma.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>
@@ -37,7 +39,6 @@
#include <asm/sizes.h>
#include <mach/hardware.h>
-#include <mach/dma.h>
#include <linux/platform_data/mmc-pxamci.h>
#include "pxamci.h"
@@ -58,7 +59,6 @@ struct pxamci_host {
struct clk *clk;
unsigned long clkrate;
int irq;
- int dma;
unsigned int clkrt;
unsigned int cmdat;
unsigned int imask;
@@ -69,8 +69,10 @@ struct pxamci_host {
struct mmc_command *cmd;
struct mmc_data *data;
+ struct dma_chan *dma_chan_rx;
+ struct dma_chan *dma_chan_tx;
+ dma_cookie_t dma_cookie;
dma_addr_t sg_dma;
- struct pxa_dma_desc *sg_cpu;
unsigned int dma_len;
unsigned int dma_dir;
@@ -173,14 +175,18 @@ static void pxamci_disable_irq(struct pxamci_host *host, unsigned int mask)
spin_unlock_irqrestore(&host->lock, flags);
}
+static void pxamci_dma_irq(void *param);
+
static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
{
+ struct dma_async_tx_descriptor *tx;
+ enum dma_data_direction direction;
+ struct dma_slave_config config;
+ struct dma_chan *chan;
unsigned int nob = data->blocks;
unsigned long long clks;
unsigned int timeout;
- bool dalgn = 0;
- u32 dcmd;
- int i;
+ int ret;
host->data = data;
@@ -195,54 +201,48 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
timeout = (unsigned int)clks + (data->timeout_clks << host->clkrt);
writel((timeout + 255) / 256, host->base + MMC_RDTO);
+ memset(&config, 0, sizeof(config));
+ config.src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ config.dst_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
+ config.src_addr = host->res->start + MMC_RXFIFO;
+ config.dst_addr = host->res->start + MMC_TXFIFO;
+ config.src_maxburst = 32;
+ config.dst_maxburst = 32;
+
if (data->flags & MMC_DATA_READ) {
host->dma_dir = DMA_FROM_DEVICE;
- dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC;
- DRCMR(host->dma_drcmrtx) = 0;
- DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD;
+ direction = DMA_DEV_TO_MEM;
+ chan = host->dma_chan_rx;
} else {
host->dma_dir = DMA_TO_DEVICE;
- dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG;
- DRCMR(host->dma_drcmrrx) = 0;
- DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD;
+ direction = DMA_MEM_TO_DEV;
+ chan = host->dma_chan_tx;
}
- dcmd |= DCMD_BURST32 | DCMD_WIDTH1;
+ config.direction = direction;
+
+ ret = dmaengine_slave_config(chan, &config);
+ if (ret < 0) {
+ dev_err(mmc_dev(host->mmc), "dma slave config failed\n");
+ return;
+ }
- host->dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ host->dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
host->dma_dir);
- for (i = 0; i < host->dma_len; i++) {
- unsigned int length = sg_dma_len(&data->sg[i]);
- host->sg_cpu[i].dcmd = dcmd | length;
- if (length & 31 && !(data->flags & MMC_DATA_READ))
- host->sg_cpu[i].dcmd |= DCMD_ENDIRQEN;
- /* Not aligned to 8-byte boundary? */
- if (sg_dma_address(&data->sg[i]) & 0x7)
- dalgn = 1;
- if (data->flags & MMC_DATA_READ) {
- host->sg_cpu[i].dsadr = host->res->start + MMC_RXFIFO;
- host->sg_cpu[i].dtadr = sg_dma_address(&data->sg[i]);
- } else {
- host->sg_cpu[i].dsadr = sg_dma_address(&data->sg[i]);
- host->sg_cpu[i].dtadr = host->res->start + MMC_TXFIFO;
- }
- host->sg_cpu[i].ddadr = host->sg_dma + (i + 1) *
- sizeof(struct pxa_dma_desc);
+ tx = dmaengine_prep_slave_sg(chan, data->sg, host->dma_len, direction,
+ DMA_PREP_INTERRUPT);
+ if (!tx) {
+ dev_err(mmc_dev(host->mmc), "prep_slave_sg() failed\n");
+ return;
}
- host->sg_cpu[host->dma_len - 1].ddadr = DDADR_STOP;
- wmb();
- /*
- * The PXA27x DMA controller encounters overhead when working with
- * unaligned (to 8-byte boundaries) data, so switch on byte alignment
- * mode only if we have unaligned data.
- */
- if (dalgn)
- DALGN |= (1 << host->dma);
- else
- DALGN &= ~(1 << host->dma);
- DDADR(host->dma) = host->sg_dma;
+ if (!(data->flags & MMC_DATA_READ)) {
+ tx->callback = pxamci_dma_irq;
+ tx->callback_param = host;
+ }
+
+ host->dma_cookie = dmaengine_submit(tx);
/*
* workaround for erratum #91:
@@ -251,7 +251,7 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
* before starting DMA.
*/
if (!cpu_is_pxa27x() || data->flags & MMC_DATA_READ)
- DCSR(host->dma) = DCSR_RUN;
+ dma_async_issue_pending(chan);
}
static void pxamci_start_cmd(struct pxamci_host *host, struct mmc_command *cmd, unsigned int cmdat)
@@ -343,7 +343,7 @@ static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat)
* enable DMA late
*/
if (cpu_is_pxa27x() && host->data->flags & MMC_DATA_WRITE)
- DCSR(host->dma) = DCSR_RUN;
+ dma_async_issue_pending(host->dma_chan_tx);
} else {
pxamci_finish_request(host, host->mrq);
}
@@ -354,13 +354,17 @@ static int pxamci_cmd_done(struct pxamci_host *host, unsigned int stat)
static int pxamci_data_done(struct pxamci_host *host, unsigned int stat)
{
struct mmc_data *data = host->data;
+ struct dma_chan *chan;
if (!data)
return 0;
- DCSR(host->dma) = 0;
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
- host->dma_dir);
+ if (data->flags & MMC_DATA_READ)
+ chan = host->dma_chan_rx;
+ else
+ chan = host->dma_chan_tx;
+ dma_unmap_sg(chan->device->dev,
+ data->sg, data->sg_len, host->dma_dir);
if (stat & STAT_READ_TIME_OUT)
data->error = -ETIMEDOUT;
@@ -552,20 +556,37 @@ static const struct mmc_host_ops pxamci_ops = {
.enable_sdio_irq = pxamci_enable_sdio_irq,
};
-static void pxamci_dma_irq(int dma, void *devid)
+static void pxamci_dma_irq(void *param)
{
- struct pxamci_host *host = devid;
- int dcsr = DCSR(dma);
- DCSR(dma) = dcsr & ~DCSR_STOPIRQEN;
+ struct pxamci_host *host = param;
+ struct dma_tx_state state;
+ enum dma_status status;
+ struct dma_chan *chan;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ if (!host->data)
+ goto out_unlock;
- if (dcsr & DCSR_ENDINTR) {
+ if (host->data->flags & MMC_DATA_READ)
+ chan = host->dma_chan_rx;
+ else
+ chan = host->dma_chan_tx;
+
+ status = dmaengine_tx_status(chan, host->dma_cookie, &state);
+
+ if (likely(status == DMA_COMPLETE)) {
writel(BUF_PART_FULL, host->base + MMC_PRTBUF);
} else {
- pr_err("%s: DMA error on channel %d (DCSR=%#x)\n",
- mmc_hostname(host->mmc), dma, dcsr);
+ pr_err("%s: DMA error on %s channel\n", mmc_hostname(host->mmc),
+ host->data->flags & MMC_DATA_READ ? "rx" : "tx");
host->data->error = -EIO;
pxamci_data_done(host, 0);
}
+
+out_unlock:
+ spin_unlock_irqrestore(&host->lock, flags);
}
static irqreturn_t pxamci_detect_irq(int irq, void *devid)
@@ -625,7 +646,9 @@ static int pxamci_probe(struct platform_device *pdev)
struct mmc_host *mmc;
struct pxamci_host *host = NULL;
struct resource *r, *dmarx, *dmatx;
+ struct pxad_param param_rx, param_tx;
int ret, irq, gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
+ dma_cap_mask_t mask;
ret = pxamci_of_init(pdev);
if (ret)
@@ -671,7 +694,6 @@ static int pxamci_probe(struct platform_device *pdev)
host = mmc_priv(mmc);
host->mmc = mmc;
- host->dma = -1;
host->pdata = pdev->dev.platform_data;
host->clkrt = CLKRT_OFF;
@@ -702,12 +724,6 @@ static int pxamci_probe(struct platform_device *pdev)
MMC_CAP_SD_HIGHSPEED;
}
- host->sg_cpu = dma_alloc_coherent(&pdev->dev, PAGE_SIZE, &host->sg_dma, GFP_KERNEL);
- if (!host->sg_cpu) {
- ret = -ENOMEM;
- goto out;
- }
-
spin_lock_init(&host->lock);
host->res = r;
host->irq = irq;
@@ -728,32 +744,45 @@ static int pxamci_probe(struct platform_device *pdev)
writel(64, host->base + MMC_RESTO);
writel(host->imask, host->base + MMC_I_MASK);
- host->dma = pxa_request_dma(DRIVER_NAME, DMA_PRIO_LOW,
- pxamci_dma_irq, host);
- if (host->dma < 0) {
- ret = -EBUSY;
- goto out;
- }
-
ret = request_irq(host->irq, pxamci_irq, 0, DRIVER_NAME, host);
if (ret)
goto out;
platform_set_drvdata(pdev, mmc);
- dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (!dmarx) {
- ret = -ENXIO;
+ if (!pdev->dev.of_node) {
+ dmarx = platform_get_resource(pdev, IORESOURCE_DMA, 0);
+ dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
+ if (!dmarx || !dmatx) {
+ ret = -ENXIO;
+ goto out;
+ }
+ param_rx.prio = PXAD_PRIO_LOWEST;
+ param_rx.drcmr = dmarx->start;
+ param_tx.prio = PXAD_PRIO_LOWEST;
+ param_tx.drcmr = dmatx->start;
+ }
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ host->dma_chan_rx =
+ dma_request_slave_channel_compat(mask, pxad_filter_fn,
+ &param_rx, &pdev->dev, "rx");
+ if (host->dma_chan_rx == NULL) {
+ dev_err(&pdev->dev, "unable to request rx dma channel\n");
+ ret = -ENODEV;
goto out;
}
- host->dma_drcmrrx = dmarx->start;
- dmatx = platform_get_resource(pdev, IORESOURCE_DMA, 1);
- if (!dmatx) {
- ret = -ENXIO;
+ host->dma_chan_tx =
+ dma_request_slave_channel_compat(mask, pxad_filter_fn,
+ &param_tx, &pdev->dev, "tx");
+ if (host->dma_chan_tx == NULL) {
+ dev_err(&pdev->dev, "unable to request tx dma channel\n");
+ ret = -ENODEV;
goto out;
}
- host->dma_drcmrtx = dmatx->start;
if (host->pdata) {
gpio_cd = host->pdata->gpio_card_detect;
@@ -814,12 +843,12 @@ err_gpio_ro:
gpio_free(gpio_power);
out:
if (host) {
- if (host->dma >= 0)
- pxa_free_dma(host->dma);
+ if (host->dma_chan_rx)
+ dma_release_channel(host->dma_chan_rx);
+ if (host->dma_chan_tx)
+ dma_release_channel(host->dma_chan_tx);
if (host->base)
iounmap(host->base);
- if (host->sg_cpu)
- dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
if (host->clk)
clk_put(host->clk);
}
@@ -863,13 +892,12 @@ static int pxamci_remove(struct platform_device *pdev)
END_CMD_RES|PRG_DONE|DATA_TRAN_DONE,
host->base + MMC_I_MASK);
- DRCMR(host->dma_drcmrrx) = 0;
- DRCMR(host->dma_drcmrtx) = 0;
-
free_irq(host->irq, host);
- pxa_free_dma(host->dma);
+ dmaengine_terminate_all(host->dma_chan_rx);
+ dmaengine_terminate_all(host->dma_chan_tx);
+ dma_release_channel(host->dma_chan_rx);
+ dma_release_channel(host->dma_chan_tx);
iounmap(host->base);
- dma_free_coherent(&pdev->dev, PAGE_SIZE, host->sg_cpu, host->sg_dma);
clk_put(host->clk);
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index c6b9f6492e1a..886d230f41d0 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -32,6 +32,7 @@
#include "sdhci-esdhc.h"
#define ESDHC_CTRL_D3CD 0x08
+#define ESDHC_BURST_LEN_EN_INCR (1 << 27)
/* VENDOR SPEC register */
#define ESDHC_VENDOR_SPEC 0xc0
#define ESDHC_VENDOR_SPEC_SDIO_QUIRK (1 << 1)
@@ -44,6 +45,7 @@
#define ESDHC_MIX_CTRL_EXE_TUNE (1 << 22)
#define ESDHC_MIX_CTRL_SMPCLK_SEL (1 << 23)
#define ESDHC_MIX_CTRL_FBCLK_SEL (1 << 25)
+#define ESDHC_MIX_CTRL_HS400_EN (1 << 26)
/* Bits 3 and 6 are not SDHCI standard definitions */
#define ESDHC_MIX_CTRL_SDHCI_MASK 0xb7
/* Tuning bits */
@@ -60,10 +62,21 @@
#define ESDHC_TUNE_CTRL_MIN 0
#define ESDHC_TUNE_CTRL_MAX ((1 << 7) - 1)
+/* strobe dll register */
+#define ESDHC_STROBE_DLL_CTRL 0x70
+#define ESDHC_STROBE_DLL_CTRL_ENABLE (1 << 0)
+#define ESDHC_STROBE_DLL_CTRL_RESET (1 << 1)
+#define ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT 3
+
+#define ESDHC_STROBE_DLL_STATUS 0x74
+#define ESDHC_STROBE_DLL_STS_REF_LOCK (1 << 1)
+#define ESDHC_STROBE_DLL_STS_SLV_LOCK 0x1
+
#define ESDHC_TUNING_CTRL 0xcc
#define ESDHC_STD_TUNING_EN (1 << 24)
/* NOTE: the minimum valid tuning start tap for mx6sl is 1 */
#define ESDHC_TUNING_START_TAP 0x1
+#define ESDHC_TUNING_STEP_SHIFT 16
/* pinctrl state */
#define ESDHC_PINCTRL_STATE_100MHZ "state_100mhz"
@@ -120,6 +133,11 @@
#define ESDHC_FLAG_ERR004536 BIT(7)
/* The IP supports HS200 mode */
#define ESDHC_FLAG_HS200 BIT(8)
+/* The IP supports HS400 mode */
+#define ESDHC_FLAG_HS400 BIT(9)
+
+/* A higher clock ferquency than this rate requires strobell dll control */
+#define ESDHC_STROBE_DLL_CLK_FREQ 100000000
struct esdhc_soc_data {
u32 flags;
@@ -156,6 +174,12 @@ static struct esdhc_soc_data usdhc_imx6sx_data = {
| ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200,
};
+static struct esdhc_soc_data usdhc_imx7d_data = {
+ .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
+ | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
+ | ESDHC_FLAG_HS400,
+};
+
struct pltfm_imx_data {
u32 scratchpad;
struct pinctrl *pinctrl;
@@ -199,6 +223,7 @@ static const struct of_device_id imx_esdhc_dt_ids[] = {
{ .compatible = "fsl,imx6sx-usdhc", .data = &usdhc_imx6sx_data, },
{ .compatible = "fsl,imx6sl-usdhc", .data = &usdhc_imx6sl_data, },
{ .compatible = "fsl,imx6q-usdhc", .data = &usdhc_imx6q_data, },
+ { .compatible = "fsl,imx7d-usdhc", .data = &usdhc_imx7d_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, imx_esdhc_dt_ids);
@@ -274,6 +299,9 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
val = SDHCI_SUPPORT_DDR50 | SDHCI_SUPPORT_SDR104
| SDHCI_SUPPORT_SDR50
| SDHCI_USE_SDR50_TUNING;
+
+ if (imx_data->socdata->flags & ESDHC_FLAG_HS400)
+ val |= SDHCI_SUPPORT_HS400;
}
}
@@ -448,6 +476,7 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
} else if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING) {
u32 v = readl(host->ioaddr + SDHCI_ACMD12_ERR);
u32 m = readl(host->ioaddr + ESDHC_MIX_CTRL);
+ u32 tuning_ctrl;
if (val & SDHCI_CTRL_TUNED_CLK) {
v |= ESDHC_MIX_CTRL_SMPCLK_SEL;
} else {
@@ -458,6 +487,11 @@ static void esdhc_writew_le(struct sdhci_host *host, u16 val, int reg)
if (val & SDHCI_CTRL_EXEC_TUNING) {
v |= ESDHC_MIX_CTRL_EXE_TUNE;
m |= ESDHC_MIX_CTRL_FBCLK_SEL;
+ tuning_ctrl = readl(host->ioaddr + ESDHC_TUNING_CTRL);
+ tuning_ctrl |= ESDHC_STD_TUNING_EN | ESDHC_TUNING_START_TAP;
+ if (imx_data->boarddata.tuning_step)
+ tuning_ctrl |= imx_data->boarddata.tuning_step << ESDHC_TUNING_STEP_SHIFT;
+ writel(tuning_ctrl, host->ioaddr + ESDHC_TUNING_CTRL);
} else {
v &= ~ESDHC_MIX_CTRL_EXE_TUNE;
}
@@ -774,6 +808,7 @@ static int esdhc_change_pinstate(struct sdhci_host *host,
break;
case MMC_TIMING_UHS_SDR104:
case MMC_TIMING_MMC_HS200:
+ case MMC_TIMING_MMC_HS400:
pinctrl = imx_data->pins_200mhz;
break;
default:
@@ -784,24 +819,68 @@ static int esdhc_change_pinstate(struct sdhci_host *host,
return pinctrl_select_state(imx_data->pinctrl, pinctrl);
}
+/*
+ * For HS400 eMMC, there is a data_strobe line, this signal is generated
+ * by the device and used for data output and CRC status response output
+ * in HS400 mode. The frequency of this signal follows the frequency of
+ * CLK generated by host. Host receive the data which is aligned to the
+ * edge of data_strobe line. Due to the time delay between CLK line and
+ * data_strobe line, if the delay time is larger than one clock cycle,
+ * then CLK and data_strobe line will misaligned, read error shows up.
+ * So when the CLK is higher than 100MHz, each clock cycle is short enough,
+ * host should config the delay target.
+ */
+static void esdhc_set_strobe_dll(struct sdhci_host *host)
+{
+ u32 v;
+
+ if (host->mmc->actual_clock > ESDHC_STROBE_DLL_CLK_FREQ) {
+ /* force a reset on strobe dll */
+ writel(ESDHC_STROBE_DLL_CTRL_RESET,
+ host->ioaddr + ESDHC_STROBE_DLL_CTRL);
+ /*
+ * enable strobe dll ctrl and adjust the delay target
+ * for the uSDHC loopback read clock
+ */
+ v = ESDHC_STROBE_DLL_CTRL_ENABLE |
+ (7 << ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
+ writel(v, host->ioaddr + ESDHC_STROBE_DLL_CTRL);
+ /* wait 1us to make sure strobe dll status register stable */
+ udelay(1);
+ v = readl(host->ioaddr + ESDHC_STROBE_DLL_STATUS);
+ if (!(v & ESDHC_STROBE_DLL_STS_REF_LOCK))
+ dev_warn(mmc_dev(host->mmc),
+ "warning! HS400 strobe DLL status REF not lock!\n");
+ if (!(v & ESDHC_STROBE_DLL_STS_SLV_LOCK))
+ dev_warn(mmc_dev(host->mmc),
+ "warning! HS400 strobe DLL status SLV not lock!\n");
+ }
+}
+
static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
{
+ u32 m;
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
+ /* disable ddr mode and disable HS400 mode */
+ m = readl(host->ioaddr + ESDHC_MIX_CTRL);
+ m &= ~(ESDHC_MIX_CTRL_DDREN | ESDHC_MIX_CTRL_HS400_EN);
+ imx_data->is_ddr = 0;
+
switch (timing) {
case MMC_TIMING_UHS_SDR12:
case MMC_TIMING_UHS_SDR25:
case MMC_TIMING_UHS_SDR50:
case MMC_TIMING_UHS_SDR104:
case MMC_TIMING_MMC_HS200:
+ writel(m, host->ioaddr + ESDHC_MIX_CTRL);
break;
case MMC_TIMING_UHS_DDR50:
case MMC_TIMING_MMC_DDR52:
- writel(readl(host->ioaddr + ESDHC_MIX_CTRL) |
- ESDHC_MIX_CTRL_DDREN,
- host->ioaddr + ESDHC_MIX_CTRL);
+ m |= ESDHC_MIX_CTRL_DDREN;
+ writel(m, host->ioaddr + ESDHC_MIX_CTRL);
imx_data->is_ddr = 1;
if (boarddata->delay_line) {
u32 v;
@@ -813,6 +892,12 @@ static void esdhc_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
writel(v, host->ioaddr + ESDHC_DLL_CTRL);
}
break;
+ case MMC_TIMING_MMC_HS400:
+ m |= ESDHC_MIX_CTRL_DDREN | ESDHC_MIX_CTRL_HS400_EN;
+ writel(m, host->ioaddr + ESDHC_MIX_CTRL);
+ imx_data->is_ddr = 1;
+ esdhc_set_strobe_dll(host);
+ break;
}
esdhc_change_pinstate(host, timing);
@@ -886,6 +971,8 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
if (gpio_is_valid(boarddata->wp_gpio))
boarddata->wp_type = ESDHC_WP_GPIO;
+ of_property_read_u32(np, "fsl,tuning-step", &boarddata->tuning_step);
+
if (of_find_property(np, "no-1-8-v", NULL))
boarddata->support_vsel = false;
else
@@ -1073,10 +1160,26 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
* to something insane. Change it back here.
*/
if (esdhc_is_usdhc(imx_data)) {
- writel(0x08100810, host->ioaddr + ESDHC_WTMK_LVL);
+ writel(0x10401040, host->ioaddr + ESDHC_WTMK_LVL);
+
host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
host->mmc->caps |= MMC_CAP_1_8V_DDR;
+ /*
+ * ROM code will change the bit burst_length_enable setting
+ * to zero if this usdhc is choosed to boot system. Change
+ * it back here, otherwise it will impact the performance a
+ * lot. This bit is used to enable/disable the burst length
+ * for the external AHB2AXI bridge, it's usefully especially
+ * for INCR transfer because without burst length indicator,
+ * the AHB2AXI bridge does not know the burst length in
+ * advance. And without burst length indicator, AHB INCR
+ * transfer can only be converted to singles on the AXI side.
+ */
+ writel(readl(host->ioaddr + SDHCI_HOST_CONTROL)
+ | ESDHC_BURST_LEN_EN_INCR,
+ host->ioaddr + SDHCI_HOST_CONTROL);
+
if (!(imx_data->socdata->flags & ESDHC_FLAG_HS200))
host->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
@@ -1100,6 +1203,9 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
if (imx_data->socdata->flags & ESDHC_FLAG_ERR004536)
host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
+ if (imx_data->socdata->flags & ESDHC_FLAG_HS400)
+ host->quirks2 |= SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400;
+
if (of_id)
err = sdhci_esdhc_imx_probe_dt(pdev, host, imx_data);
else
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index a870c42731d7..163ac9974d91 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -21,7 +21,8 @@
#define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
SDHCI_QUIRK_NO_BUSY_IRQ | \
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
- SDHCI_QUIRK_PIO_NEEDS_DELAY)
+ SDHCI_QUIRK_PIO_NEEDS_DELAY | \
+ SDHCI_QUIRK_NO_HISPD_BIT)
#define ESDHC_SYSTEM_CONTROL 0x2c
#define ESDHC_CLOCK_MASK 0x0000fff0
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 4a09f7608c66..4bcee033feda 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -489,6 +489,11 @@ static int sdhci_msm_probe(struct platform_device *pdev)
goto pclk_disable;
}
+ /* Vote for maximum clock rate for maximum performance */
+ ret = clk_set_rate(msm_host->clk, INT_MAX);
+ if (ret)
+ dev_warn(&pdev->dev, "core clock boost failed\n");
+
ret = clk_prepare_enable(msm_host->clk);
if (ret)
goto pclk_disable;
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 21c0c08dfe54..75379cb0fb35 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -63,6 +63,9 @@ static struct sdhci_ops sdhci_arasan_ops = {
static struct sdhci_pltfm_data sdhci_arasan_pdata = {
.ops = &sdhci_arasan_ops,
+ .quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
+ SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
};
#ifdef CONFIG_PM_SLEEP
@@ -214,6 +217,7 @@ static int sdhci_arasan_remove(struct platform_device *pdev)
static const struct of_device_id sdhci_arasan_of_match[] = {
{ .compatible = "arasan,sdhci-8.9a" },
+ { .compatible = "arasan,sdhci-5.1" },
{ .compatible = "arasan,sdhci-4.9a" },
{ }
};
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
new file mode 100644
index 000000000000..d1556643a41d
--- /dev/null
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -0,0 +1,191 @@
+/*
+ * Atmel SDMMC controller driver.
+ *
+ * Copyright (C) 2015 Atmel,
+ * 2015 Ludovic Desroches <ludovic.desroches@atmel.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mmc/host.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include "sdhci-pltfm.h"
+
+#define SDMMC_CACR 0x230
+#define SDMMC_CACR_CAPWREN BIT(0)
+#define SDMMC_CACR_KEY (0x46 << 8)
+
+struct sdhci_at91_priv {
+ struct clk *hclock;
+ struct clk *gck;
+ struct clk *mainck;
+};
+
+static const struct sdhci_ops sdhci_at91_sama5d2_ops = {
+ .set_clock = sdhci_set_clock,
+ .set_bus_width = sdhci_set_bus_width,
+ .reset = sdhci_reset,
+ .set_uhs_signaling = sdhci_set_uhs_signaling,
+};
+
+static const struct sdhci_pltfm_data soc_data_sama5d2 = {
+ .ops = &sdhci_at91_sama5d2_ops,
+};
+
+static const struct of_device_id sdhci_at91_dt_match[] = {
+ { .compatible = "atmel,sama5d2-sdhci", .data = &soc_data_sama5d2 },
+ {}
+};
+
+static int sdhci_at91_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
+ const struct sdhci_pltfm_data *soc_data;
+ struct sdhci_host *host;
+ struct sdhci_pltfm_host *pltfm_host;
+ struct sdhci_at91_priv *priv;
+ unsigned int caps0, caps1;
+ unsigned int clk_base, clk_mul;
+ unsigned int gck_rate, real_gck_rate;
+ int ret;
+
+ match = of_match_device(sdhci_at91_dt_match, &pdev->dev);
+ if (!match)
+ return -EINVAL;
+ soc_data = match->data;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv) {
+ dev_err(&pdev->dev, "unable to allocate private data\n");
+ return -ENOMEM;
+ }
+
+ priv->mainck = devm_clk_get(&pdev->dev, "baseclk");
+ if (IS_ERR(priv->mainck)) {
+ dev_err(&pdev->dev, "failed to get baseclk\n");
+ return PTR_ERR(priv->mainck);
+ }
+
+ priv->hclock = devm_clk_get(&pdev->dev, "hclock");
+ if (IS_ERR(priv->hclock)) {
+ dev_err(&pdev->dev, "failed to get hclock\n");
+ return PTR_ERR(priv->hclock);
+ }
+
+ priv->gck = devm_clk_get(&pdev->dev, "multclk");
+ if (IS_ERR(priv->gck)) {
+ dev_err(&pdev->dev, "failed to get multclk\n");
+ return PTR_ERR(priv->gck);
+ }
+
+ host = sdhci_pltfm_init(pdev, soc_data, 0);
+ if (IS_ERR(host))
+ return PTR_ERR(host);
+
+ /*
+ * The mult clock is provided by as a generated clock by the PMC
+ * controller. In order to set the rate of gck, we have to get the
+ * base clock rate and the clock mult from capabilities.
+ */
+ clk_prepare_enable(priv->hclock);
+ caps0 = readl(host->ioaddr + SDHCI_CAPABILITIES);
+ caps1 = readl(host->ioaddr + SDHCI_CAPABILITIES_1);
+ clk_base = (caps0 & SDHCI_CLOCK_V3_BASE_MASK) >> SDHCI_CLOCK_BASE_SHIFT;
+ clk_mul = (caps1 & SDHCI_CLOCK_MUL_MASK) >> SDHCI_CLOCK_MUL_SHIFT;
+ gck_rate = clk_base * 1000000 * (clk_mul + 1);
+ ret = clk_set_rate(priv->gck, gck_rate);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to set gck");
+ goto hclock_disable_unprepare;
+ return -EINVAL;
+ }
+ /*
+ * We need to check if we have the requested rate for gck because in
+ * some cases this rate could be not supported. If it happens, the rate
+ * is the closest one gck can provide. We have to update the value
+ * of clk mul.
+ */
+ real_gck_rate = clk_get_rate(priv->gck);
+ if (real_gck_rate != gck_rate) {
+ clk_mul = real_gck_rate / (clk_base * 1000000) - 1;
+ caps1 &= (~SDHCI_CLOCK_MUL_MASK);
+ caps1 |= ((clk_mul << SDHCI_CLOCK_MUL_SHIFT) & SDHCI_CLOCK_MUL_MASK);
+ /* Set capabilities in r/w mode. */
+ writel(SDMMC_CACR_KEY | SDMMC_CACR_CAPWREN, host->ioaddr + SDMMC_CACR);
+ writel(caps1, host->ioaddr + SDHCI_CAPABILITIES_1);
+ /* Set capabilities in ro mode. */
+ writel(0, host->ioaddr + SDMMC_CACR);
+ dev_info(&pdev->dev, "update clk mul to %u as gck rate is %u Hz\n",
+ clk_mul, real_gck_rate);
+ }
+
+ clk_prepare_enable(priv->mainck);
+ clk_prepare_enable(priv->gck);
+
+ pltfm_host = sdhci_priv(host);
+ pltfm_host->priv = priv;
+
+ ret = mmc_of_parse(host->mmc);
+ if (ret)
+ goto clocks_disable_unprepare;
+
+ sdhci_get_of_property(pdev);
+
+ ret = sdhci_add_host(host);
+ if (ret)
+ goto clocks_disable_unprepare;
+
+ return 0;
+
+clocks_disable_unprepare:
+ clk_disable_unprepare(priv->gck);
+ clk_disable_unprepare(priv->mainck);
+hclock_disable_unprepare:
+ clk_disable_unprepare(priv->hclock);
+ sdhci_pltfm_free(pdev);
+ return ret;
+}
+
+static int sdhci_at91_remove(struct platform_device *pdev)
+{
+ struct sdhci_host *host = platform_get_drvdata(pdev);
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_at91_priv *priv = pltfm_host->priv;
+
+ sdhci_pltfm_unregister(pdev);
+
+ clk_disable_unprepare(priv->gck);
+ clk_disable_unprepare(priv->hclock);
+ clk_disable_unprepare(priv->mainck);
+
+ return 0;
+}
+
+static struct platform_driver sdhci_at91_driver = {
+ .driver = {
+ .name = "sdhci-at91",
+ .of_match_table = sdhci_at91_dt_match,
+ .pm = SDHCI_PLTFM_PMOPS,
+ },
+ .probe = sdhci_at91_probe,
+ .remove = sdhci_at91_remove,
+};
+
+module_platform_driver(sdhci_at91_driver);
+
+MODULE_DESCRIPTION("SDHCI driver for at91");
+MODULE_AUTHOR("Ludovic Desroches <ludovic.desroches@atmel.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 797be7549a15..653f335bef15 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -208,6 +208,12 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock == 0)
return;
+ /* Workaround to start pre_div at 2 for VNN < VENDOR_V_23 */
+ temp = esdhc_readw(host, SDHCI_HOST_VERSION);
+ temp = (temp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
+ if (temp < VENDOR_V_23)
+ pre_div = 2;
+
/* Workaround to reduce the clock frequency for p1010 esdhc */
if (of_find_compatible_node(NULL, NULL, "fsl,p1010-esdhc")) {
if (clock > 20000000)
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 94f54d2772e8..b3b0a3e4fca1 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -618,6 +618,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = sdhci_pci_o2_probe,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
.probe_slot = sdhci_pci_o2_probe_slot,
.resume = sdhci_pci_o2_resume,
};
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 0110bae25b7e..884294576356 100644
--- a/drivers/mmc/host/sdhci-sirf.c
+++ b/drivers/mmc/host/sdhci-sirf.c
@@ -161,8 +161,8 @@ static struct sdhci_pltfm_data sdhci_sirf_pdata = {
.quirks = SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
- SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
- SDHCI_QUIRK_DELAY_AFTER_POWER,
+ SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
};
static int sdhci_sirf_probe(struct platform_device *pdev)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1dbe93232030..64b7fdbd1a9c 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -54,8 +54,7 @@ static void sdhci_finish_command(struct sdhci_host *);
static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
static int sdhci_pre_dma_transfer(struct sdhci_host *host,
- struct mmc_data *data,
- struct sdhci_host_next *next);
+ struct mmc_data *data);
static int sdhci_do_get_cd(struct sdhci_host *host);
#ifdef CONFIG_PM
@@ -207,8 +206,7 @@ EXPORT_SYMBOL_GPL(sdhci_reset);
static void sdhci_do_reset(struct sdhci_host *host, u8 mask)
{
if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
- if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
- SDHCI_CARD_PRESENT))
+ if (!sdhci_do_get_cd(host))
return;
}
@@ -496,7 +494,7 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
goto fail;
BUG_ON(host->align_addr & host->align_mask);
- host->sg_count = sdhci_pre_dma_transfer(host, data, NULL);
+ host->sg_count = sdhci_pre_dma_transfer(host, data);
if (host->sg_count < 0)
goto unmap_align;
@@ -635,9 +633,11 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
}
}
- if (!data->host_cookie)
+ if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, direction);
+ data->host_cookie = COOKIE_UNMAPPED;
+ }
}
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
@@ -833,7 +833,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
} else {
int sg_cnt;
- sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
+ sg_cnt = sdhci_pre_dma_transfer(host, data);
if (sg_cnt <= 0) {
/*
* This only happens when someone fed
@@ -949,11 +949,13 @@ static void sdhci_finish_data(struct sdhci_host *host)
if (host->flags & SDHCI_USE_ADMA)
sdhci_adma_table_post(host, data);
else {
- if (!data->host_cookie)
+ if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ data->host_cookie = COOKIE_UNMAPPED;
+ }
}
}
@@ -1132,6 +1134,7 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);
break;
case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);
break;
case MMC_TIMING_MMC_HS400:
@@ -1152,6 +1155,7 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
int real_div = div, clk_mul = 1;
u16 clk = 0;
unsigned long timeout;
+ bool switch_base_clk = false;
host->mmc->actual_clock = 0;
@@ -1189,15 +1193,25 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
<= clock)
break;
}
- /*
- * Set Programmable Clock Mode in the Clock
- * Control register.
- */
- clk = SDHCI_PROG_CLOCK_MODE;
- real_div = div;
- clk_mul = host->clk_mul;
- div--;
- } else {
+ if ((host->max_clk * host->clk_mul / div) <= clock) {
+ /*
+ * Set Programmable Clock Mode in the Clock
+ * Control register.
+ */
+ clk = SDHCI_PROG_CLOCK_MODE;
+ real_div = div;
+ clk_mul = host->clk_mul;
+ div--;
+ } else {
+ /*
+ * Divisor can be too small to reach clock
+ * speed requirement. Then use the base clock.
+ */
+ switch_base_clk = true;
+ }
+ }
+
+ if (!host->clk_mul || switch_base_clk) {
/* Version 3.00 divisors must be a multiple of 2. */
if (host->max_clk <= clock)
div = 1;
@@ -1210,6 +1224,9 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
}
real_div = div;
div >>= 1;
+ if ((host->quirks2 & SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN)
+ && !div && host->max_clk <= 25000000)
+ div = 1;
}
} else {
/* Version 2.00 divisors must be a power of 2. */
@@ -1559,7 +1576,8 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
(ios->timing == MMC_TIMING_UHS_SDR25) ||
(ios->timing == MMC_TIMING_UHS_SDR50) ||
(ios->timing == MMC_TIMING_UHS_SDR104) ||
- (ios->timing == MMC_TIMING_UHS_DDR50))) {
+ (ios->timing == MMC_TIMING_UHS_DDR50) ||
+ (ios->timing == MMC_TIMING_MMC_DDR52))) {
u16 preset;
sdhci_enable_preset_value(host, true);
@@ -1601,15 +1619,21 @@ static int sdhci_do_get_cd(struct sdhci_host *host)
if (host->flags & SDHCI_DEVICE_DEAD)
return 0;
- /* If polling/nonremovable, assume that the card is always present. */
- if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) ||
- (host->mmc->caps & MMC_CAP_NONREMOVABLE))
+ /* If nonremovable, assume that the card is always present. */
+ if (host->mmc->caps & MMC_CAP_NONREMOVABLE)
return 1;
- /* Try slot gpio detect */
+ /*
+ * Try slot gpio detect, if defined it take precedence
+ * over build in controller functionality
+ */
if (!IS_ERR_VALUE(gpio_cd))
return !!gpio_cd;
+ /* If polling, assume that the card is always present. */
+ if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
+ return 1;
+
/* Host native card detect */
return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
}
@@ -2097,49 +2121,36 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct mmc_data *data = mrq->data;
if (host->flags & SDHCI_REQ_USE_DMA) {
- if (data->host_cookie)
+ if (data->host_cookie == COOKIE_GIVEN ||
+ data->host_cookie == COOKIE_MAPPED)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
- mrq->data->host_cookie = 0;
+ data->host_cookie = COOKIE_UNMAPPED;
}
}
static int sdhci_pre_dma_transfer(struct sdhci_host *host,
- struct mmc_data *data,
- struct sdhci_host_next *next)
+ struct mmc_data *data)
{
int sg_count;
- if (!next && data->host_cookie &&
- data->host_cookie != host->next_data.cookie) {
- pr_debug(DRIVER_NAME "[%s] invalid cookie: %d, next-cookie %d\n",
- __func__, data->host_cookie, host->next_data.cookie);
- data->host_cookie = 0;
+ if (data->host_cookie == COOKIE_MAPPED) {
+ data->host_cookie = COOKIE_GIVEN;
+ return data->sg_count;
}
- /* Check if next job is already prepared */
- if (next ||
- (!next && data->host_cookie != host->next_data.cookie)) {
- sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
- data->flags & MMC_DATA_WRITE ?
- DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
- } else {
- sg_count = host->next_data.sg_count;
- host->next_data.sg_count = 0;
- }
+ WARN_ON(data->host_cookie == COOKIE_GIVEN);
+ sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ data->flags & MMC_DATA_WRITE ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE);
if (sg_count == 0)
- return -EINVAL;
+ return -ENOSPC;
- if (next) {
- next->sg_count = sg_count;
- data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie;
- } else
- host->sg_count = sg_count;
+ data->sg_count = sg_count;
+ data->host_cookie = COOKIE_MAPPED;
return sg_count;
}
@@ -2149,16 +2160,10 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
{
struct sdhci_host *host = mmc_priv(mmc);
- if (mrq->data->host_cookie) {
- mrq->data->host_cookie = 0;
- return;
- }
+ mrq->data->host_cookie = COOKIE_UNMAPPED;
if (host->flags & SDHCI_REQ_USE_DMA)
- if (sdhci_pre_dma_transfer(host,
- mrq->data,
- &host->next_data) < 0)
- mrq->data->host_cookie = 0;
+ sdhci_pre_dma_transfer(host, mrq->data);
}
static void sdhci_card_event(struct mmc_host *mmc)
@@ -3030,7 +3035,6 @@ int sdhci_add_host(struct sdhci_host *host)
host->max_clk = host->ops->get_max_clock(host);
}
- host->next_data.cookie = 1;
/*
* In case of Host Controller v3.00, find out whether clock
* multiplier is supported.
@@ -3126,7 +3130,8 @@ int sdhci_add_host(struct sdhci_host *host)
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
- !(mmc->caps & MMC_CAP_NONREMOVABLE))
+ !(mmc->caps & MMC_CAP_NONREMOVABLE) &&
+ IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc)))
mmc->caps |= MMC_CAP_NEEDS_POLL;
/* If there are external regulators, get them */
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 5521d29368e4..7c02ff46c8ac 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -309,9 +309,10 @@ struct sdhci_adma2_64_desc {
*/
#define SDHCI_MAX_SEGS 128
-struct sdhci_host_next {
- unsigned int sg_count;
- s32 cookie;
+enum sdhci_cookie {
+ COOKIE_UNMAPPED,
+ COOKIE_MAPPED,
+ COOKIE_GIVEN,
};
struct sdhci_host {
@@ -409,6 +410,8 @@ struct sdhci_host {
#define SDHCI_QUIRK2_SUPPORT_SINGLE (1<<13)
/* Controller broken with using ACMD23 */
#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14)
+/* Broken Clock divider zero in controller */
+#define SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN (1<<15)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
@@ -503,7 +506,6 @@ struct sdhci_host {
unsigned int tuning_mode; /* Re-tuning mode supported by host */
#define SDHCI_TUNING_MODE_1 0
- struct sdhci_host_next next_data;
unsigned long private[0] ____cacheline_aligned;
};
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index 5a1fdd405b1a..ad9ffea7d659 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -1632,7 +1632,9 @@ static int sh_mmcif_suspend(struct device *dev)
{
struct sh_mmcif_host *host = dev_get_drvdata(dev);
+ pm_runtime_get_sync(dev);
sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL);
+ pm_runtime_put(dev);
return 0;
}
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 4d3e1ffe5508..a7b7a6771598 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -595,7 +595,7 @@ static irqreturn_t sunxi_mmc_handle_manual_stop(int irq, void *dev_id)
static int sunxi_mmc_oclk_onoff(struct sunxi_mmc_host *host, u32 oclk_en)
{
- unsigned long expire = jiffies + msecs_to_jiffies(250);
+ unsigned long expire = jiffies + msecs_to_jiffies(750);
u32 rval;
rval = mmc_readl(host, REG_CLKCR);
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index e3dcf31a8bd6..a10fde40b6c3 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -83,6 +83,8 @@ static int tmio_mmc_next_sg(struct tmio_mmc_host *host)
return --host->sg_len;
}
+#define CMDREQ_TIMEOUT 5000
+
#ifdef CONFIG_MMC_DEBUG
#define STATUS_TO_TEXT(a, status, i) \
@@ -230,7 +232,7 @@ static void tmio_mmc_reset_work(struct work_struct *work)
*/
if (IS_ERR_OR_NULL(mrq)
|| time_is_after_jiffies(host->last_req_ts +
- msecs_to_jiffies(2000))) {
+ msecs_to_jiffies(CMDREQ_TIMEOUT))) {
spin_unlock_irqrestore(&host->lock, flags);
return;
}
@@ -818,7 +820,7 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
ret = tmio_mmc_start_command(host, mrq->cmd);
if (!ret) {
schedule_delayed_work(&host->delayed_reset_work,
- msecs_to_jiffies(2000));
+ msecs_to_jiffies(CMDREQ_TIMEOUT));
return;
}
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index 54b082b1804a..4498e92116b8 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -1611,7 +1611,7 @@ static irqreturn_t usdhi6_cd(int irq, void *dev_id)
return IRQ_NONE;
/* Ack */
- usdhi6_write(host, USDHI6_SD_INFO1, !status);
+ usdhi6_write(host, USDHI6_SD_INFO1, ~status);
if (!work_pending(&mmc->detect.work) &&
(((status & USDHI6_SD_INFO1_CARD_INSERT) &&
@@ -1634,6 +1634,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
struct usdhi6_host *host = container_of(d, struct usdhi6_host, timeout_work);
struct mmc_request *mrq = host->mrq;
struct mmc_data *data = mrq ? mrq->data : NULL;
+ struct scatterlist *sg = host->sg ?: data->sg;
dev_warn(mmc_dev(host->mmc),
"%s timeout wait %u CMD%d: IRQ 0x%08x:0x%08x, last IRQ 0x%08x\n",
@@ -1669,7 +1670,7 @@ static void usdhi6_timeout_work(struct work_struct *work)
"%c: page #%u @ +0x%zx %ux%u in SG%u. Current SG %u bytes @ %u\n",
data->flags & MMC_DATA_READ ? 'R' : 'W', host->page_idx,
host->offset, data->blocks, data->blksz, data->sg_len,
- sg_dma_len(host->sg), host->sg->offset);
+ sg_dma_len(sg), sg->offset);
usdhi6_sg_unmap(host, true);
/*
* If USDHI6_WAIT_FOR_DATA_END times out, we have already unmapped
@@ -1715,12 +1716,14 @@ static int usdhi6_probe(struct platform_device *pdev)
if (!mmc)
return -ENOMEM;
+ ret = mmc_regulator_get_supply(mmc);
+ if (ret == -EPROBE_DEFER)
+ goto e_free_mmc;
+
ret = mmc_of_parse(mmc);
if (ret < 0)
goto e_free_mmc;
- mmc_regulator_get_supply(mmc);
-
host = mmc_priv(mmc);
host->mmc = mmc;
host->wait = USDHI6_WAIT_FOR_REQUEST;
@@ -1734,8 +1737,10 @@ static int usdhi6_probe(struct platform_device *pdev)
}
host->clk = devm_clk_get(dev, NULL);
- if (IS_ERR(host->clk))
+ if (IS_ERR(host->clk)) {
+ ret = PTR_ERR(host->clk);
goto e_free_mmc;
+ }
host->imclk = clk_get_rate(host->clk);
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-17 05:35:56 +0300