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-rw-r--r--drivers/mmc/card/block.c26
-rw-r--r--drivers/mmc/host/atmel-mci.c6
-rw-r--r--drivers/mmc/host/bfin_sdh.c7
-rw-r--r--drivers/mmc/host/dw_mmc.c85
-rw-r--r--drivers/mmc/host/mvsdio.c4
-rw-r--r--drivers/mmc/host/mxs-mmc.c14
-rw-r--r--drivers/mmc/host/omap.c382
-rw-r--r--drivers/mmc/host/omap_hsmmc.c204
-rw-r--r--drivers/mmc/host/sdhci-esdhc.h6
-rw-r--r--drivers/mmc/host/sh_mmcif.c88
-rw-r--r--drivers/mmc/host/sh_mobile_sdhi.c8
11 files changed, 418 insertions, 412 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index f1c84decb19..172a768036d 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -1411,7 +1411,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req)
/* complete ongoing async transfer before issuing discard */
if (card->host->areq)
mmc_blk_issue_rw_rq(mq, NULL);
- if (req->cmd_flags & REQ_SECURE)
+ if (req->cmd_flags & REQ_SECURE &&
+ !(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN))
ret = mmc_blk_issue_secdiscard_rq(mq, req);
else
ret = mmc_blk_issue_discard_rq(mq, req);
@@ -1716,6 +1717,7 @@ force_ro_fail:
#define CID_MANFID_SANDISK 0x2
#define CID_MANFID_TOSHIBA 0x11
#define CID_MANFID_MICRON 0x13
+#define CID_MANFID_SAMSUNG 0x15
static const struct mmc_fixup blk_fixups[] =
{
@@ -1752,6 +1754,28 @@ static const struct mmc_fixup blk_fixups[] =
MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc,
MMC_QUIRK_LONG_READ_TIME),
+ /*
+ * On these Samsung MoviNAND parts, performing secure erase or
+ * secure trim can result in unrecoverable corruption due to a
+ * firmware bug.
+ */
+ MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+
END_FIXUP
};
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index eea9cf22c02..852d5fbda63 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -81,6 +81,7 @@ struct atmel_mci_caps {
bool has_bad_data_ordering;
bool need_reset_after_xfer;
bool need_blksz_mul_4;
+ bool need_notbusy_for_read_ops;
};
struct atmel_mci_dma {
@@ -1625,7 +1626,8 @@ static void atmci_tasklet_func(unsigned long priv)
__func__);
atmci_set_completed(host, EVENT_XFER_COMPLETE);
- if (host->data->flags & MMC_DATA_WRITE) {
+ if (host->caps.need_notbusy_for_read_ops ||
+ (host->data->flags & MMC_DATA_WRITE)) {
atmci_writel(host, ATMCI_IER, ATMCI_NOTBUSY);
state = STATE_WAITING_NOTBUSY;
} else if (host->mrq->stop) {
@@ -2218,6 +2220,7 @@ static void __init atmci_get_cap(struct atmel_mci *host)
host->caps.has_bad_data_ordering = 1;
host->caps.need_reset_after_xfer = 1;
host->caps.need_blksz_mul_4 = 1;
+ host->caps.need_notbusy_for_read_ops = 0;
/* keep only major version number */
switch (version & 0xf00) {
@@ -2238,6 +2241,7 @@ static void __init atmci_get_cap(struct atmel_mci *host)
case 0x200:
host->caps.has_rwproof = 1;
host->caps.need_blksz_mul_4 = 0;
+ host->caps.need_notbusy_for_read_ops = 1;
case 0x100:
host->caps.has_bad_data_ordering = 0;
host->caps.need_reset_after_xfer = 0;
diff --git a/drivers/mmc/host/bfin_sdh.c b/drivers/mmc/host/bfin_sdh.c
index 03666174ca4..a17dd7363ce 100644
--- a/drivers/mmc/host/bfin_sdh.c
+++ b/drivers/mmc/host/bfin_sdh.c
@@ -49,13 +49,6 @@
#define bfin_write_SDH_CFG bfin_write_RSI_CFG
#endif
-struct dma_desc_array {
- unsigned long start_addr;
- unsigned short cfg;
- unsigned short x_count;
- short x_modify;
-} __packed;
-
struct sdh_host {
struct mmc_host *mmc;
spinlock_t lock;
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 72dc3cde646..af40d227bec 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -627,6 +627,7 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot)
{
struct dw_mci *host = slot->host;
u32 div;
+ u32 clk_en_a;
if (slot->clock != host->current_speed) {
div = host->bus_hz / slot->clock;
@@ -659,9 +660,11 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot)
mci_send_cmd(slot,
SDMMC_CMD_UPD_CLK | SDMMC_CMD_PRV_DAT_WAIT, 0);
- /* enable clock */
- mci_writel(host, CLKENA, ((SDMMC_CLKEN_ENABLE |
- SDMMC_CLKEN_LOW_PWR) << slot->id));
+ /* enable clock; only low power if no SDIO */
+ clk_en_a = SDMMC_CLKEN_ENABLE << slot->id;
+ if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->id)))
+ clk_en_a |= SDMMC_CLKEN_LOW_PWR << slot->id;
+ mci_writel(host, CLKENA, clk_en_a);
/* inform CIU */
mci_send_cmd(slot,
@@ -862,6 +865,30 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
return present;
}
+/*
+ * Disable lower power mode.
+ *
+ * Low power mode will stop the card clock when idle. According to the
+ * description of the CLKENA register we should disable low power mode
+ * for SDIO cards if we need SDIO interrupts to work.
+ *
+ * This function is fast if low power mode is already disabled.
+ */
+static void dw_mci_disable_low_power(struct dw_mci_slot *slot)
+{
+ struct dw_mci *host = slot->host;
+ u32 clk_en_a;
+ const u32 clken_low_pwr = SDMMC_CLKEN_LOW_PWR << slot->id;
+
+ clk_en_a = mci_readl(host, CLKENA);
+
+ if (clk_en_a & clken_low_pwr) {
+ mci_writel(host, CLKENA, clk_en_a & ~clken_low_pwr);
+ mci_send_cmd(slot, SDMMC_CMD_UPD_CLK |
+ SDMMC_CMD_PRV_DAT_WAIT, 0);
+ }
+}
+
static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
{
struct dw_mci_slot *slot = mmc_priv(mmc);
@@ -871,6 +898,14 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
/* Enable/disable Slot Specific SDIO interrupt */
int_mask = mci_readl(host, INTMASK);
if (enb) {
+ /*
+ * Turn off low power mode if it was enabled. This is a bit of
+ * a heavy operation and we disable / enable IRQs a lot, so
+ * we'll leave low power mode disabled and it will get
+ * re-enabled again in dw_mci_setup_bus().
+ */
+ dw_mci_disable_low_power(slot);
+
mci_writel(host, INTMASK,
(int_mask | SDMMC_INT_SDIO(slot->id)));
} else {
@@ -1429,22 +1464,10 @@ static void dw_mci_read_data_pio(struct dw_mci *host)
nbytes += len;
remain -= len;
} while (remain);
- sg_miter->consumed = offset;
+ sg_miter->consumed = offset;
status = mci_readl(host, MINTSTS);
mci_writel(host, RINTSTS, SDMMC_INT_RXDR);
- if (status & DW_MCI_DATA_ERROR_FLAGS) {
- host->data_status = status;
- data->bytes_xfered += nbytes;
- sg_miter_stop(sg_miter);
- host->sg = NULL;
- smp_wmb();
-
- set_bit(EVENT_DATA_ERROR, &host->pending_events);
-
- tasklet_schedule(&host->tasklet);
- return;
- }
} while (status & SDMMC_INT_RXDR); /*if the RXDR is ready read again*/
data->bytes_xfered += nbytes;
@@ -1497,23 +1520,10 @@ static void dw_mci_write_data_pio(struct dw_mci *host)
nbytes += len;
remain -= len;
} while (remain);
- sg_miter->consumed = offset;
+ sg_miter->consumed = offset;
status = mci_readl(host, MINTSTS);
mci_writel(host, RINTSTS, SDMMC_INT_TXDR);
- if (status & DW_MCI_DATA_ERROR_FLAGS) {
- host->data_status = status;
- data->bytes_xfered += nbytes;
- sg_miter_stop(sg_miter);
- host->sg = NULL;
-
- smp_wmb();
-
- set_bit(EVENT_DATA_ERROR, &host->pending_events);
-
- tasklet_schedule(&host->tasklet);
- return;
- }
} while (status & SDMMC_INT_TXDR); /* if TXDR write again */
data->bytes_xfered += nbytes;
@@ -1547,12 +1557,11 @@ static void dw_mci_cmd_interrupt(struct dw_mci *host, u32 status)
static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
{
struct dw_mci *host = dev_id;
- u32 status, pending;
+ u32 pending;
unsigned int pass_count = 0;
int i;
do {
- status = mci_readl(host, RINTSTS);
pending = mci_readl(host, MINTSTS); /* read-only mask reg */
/*
@@ -1570,7 +1579,7 @@ 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 = status;
+ host->cmd_status = pending;
smp_wmb();
set_bit(EVENT_CMD_COMPLETE, &host->pending_events);
}
@@ -1578,18 +1587,16 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
if (pending & DW_MCI_DATA_ERROR_FLAGS) {
/* if there is an error report DATA_ERROR */
mci_writel(host, RINTSTS, DW_MCI_DATA_ERROR_FLAGS);
- host->data_status = status;
+ host->data_status = pending;
smp_wmb();
set_bit(EVENT_DATA_ERROR, &host->pending_events);
- if (!(pending & (SDMMC_INT_DTO | SDMMC_INT_DCRC |
- SDMMC_INT_SBE | SDMMC_INT_EBE)))
- tasklet_schedule(&host->tasklet);
+ tasklet_schedule(&host->tasklet);
}
if (pending & SDMMC_INT_DATA_OVER) {
mci_writel(host, RINTSTS, SDMMC_INT_DATA_OVER);
if (!host->data_status)
- host->data_status = status;
+ host->data_status = pending;
smp_wmb();
if (host->dir_status == DW_MCI_RECV_STATUS) {
if (host->sg != NULL)
@@ -1613,7 +1620,7 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
if (pending & SDMMC_INT_CMD_DONE) {
mci_writel(host, RINTSTS, SDMMC_INT_CMD_DONE);
- dw_mci_cmd_interrupt(host, status);
+ dw_mci_cmd_interrupt(host, pending);
}
if (pending & SDMMC_INT_CD) {
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index 3b9136c1a47..a61cb5fca22 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -839,6 +839,10 @@ out:
if (r)
release_resource(r);
if (mmc)
+ if (!IS_ERR_OR_NULL(host->clk)) {
+ clk_disable_unprepare(host->clk);
+ clk_put(host->clk);
+ }
mmc_free_host(mmc);
return ret;
diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c
index a51f9309ffb..ad3fcea1269 100644
--- a/drivers/mmc/host/mxs-mmc.c
+++ b/drivers/mmc/host/mxs-mmc.c
@@ -285,11 +285,11 @@ static irqreturn_t mxs_mmc_irq_handler(int irq, void *dev_id)
writel(stat & MXS_MMC_IRQ_BITS,
host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_CLR);
+ spin_unlock(&host->lock);
+
if ((stat & BM_SSP_CTRL1_SDIO_IRQ) && (stat & BM_SSP_CTRL1_SDIO_IRQ_EN))
mmc_signal_sdio_irq(host->mmc);
- spin_unlock(&host->lock);
-
if (stat & BM_SSP_CTRL1_RESP_TIMEOUT_IRQ)
cmd->error = -ETIMEDOUT;
else if (stat & BM_SSP_CTRL1_RESP_ERR_IRQ)
@@ -644,11 +644,6 @@ static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_SET);
writel(BM_SSP_CTRL1_SDIO_IRQ_EN,
host->base + HW_SSP_CTRL1(host) + STMP_OFFSET_REG_SET);
-
- if (readl(host->base + HW_SSP_STATUS(host)) &
- BM_SSP_STATUS_SDIO_IRQ)
- mmc_signal_sdio_irq(host->mmc);
-
} else {
writel(BM_SSP_CTRL0_SDIO_IRQ_CHECK,
host->base + HW_SSP_CTRL0 + STMP_OFFSET_REG_CLR);
@@ -657,6 +652,11 @@ static void mxs_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
}
spin_unlock_irqrestore(&host->lock, flags);
+
+ if (enable && readl(host->base + HW_SSP_STATUS(host)) &
+ BM_SSP_STATUS_SDIO_IRQ)
+ mmc_signal_sdio_irq(host->mmc);
+
}
static const struct mmc_host_ops mxs_mmc_ops = {
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index 3e8dcf8d2e0..a5999a74496 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -17,10 +17,12 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
+#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
+#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/clk.h>
@@ -128,6 +130,10 @@ struct mmc_omap_host {
unsigned char id; /* 16xx chips have 2 MMC blocks */
struct clk * iclk;
struct clk * fclk;
+ struct dma_chan *dma_rx;
+ u32 dma_rx_burst;
+ struct dma_chan *dma_tx;
+ u32 dma_tx_burst;
struct resource *mem_res;
void __iomem *virt_base;
unsigned int phys_base;
@@ -153,12 +159,8 @@ struct mmc_omap_host {
unsigned use_dma:1;
unsigned brs_received:1, dma_done:1;
- unsigned dma_is_read:1;
unsigned dma_in_use:1;
- int dma_ch;
spinlock_t dma_lock;
- struct timer_list dma_timer;
- unsigned dma_len;
struct mmc_omap_slot *slots[OMAP_MMC_MAX_SLOTS];
struct mmc_omap_slot *current_slot;
@@ -406,18 +408,25 @@ mmc_omap_release_dma(struct mmc_omap_host *host, struct mmc_data *data,
int abort)
{
enum dma_data_direction dma_data_dir;
+ struct device *dev = mmc_dev(host->mmc);
+ struct dma_chan *c;
- BUG_ON(host->dma_ch < 0);
- if (data->error)
- omap_stop_dma(host->dma_ch);
- /* Release DMA channel lazily */
- mod_timer(&host->dma_timer, jiffies + HZ);
- if (data->flags & MMC_DATA_WRITE)
+ if (data->flags & MMC_DATA_WRITE) {
dma_data_dir = DMA_TO_DEVICE;
- else
+ c = host->dma_tx;
+ } else {
dma_data_dir = DMA_FROM_DEVICE;
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_len,
- dma_data_dir);
+ c = host->dma_rx;
+ }
+ if (c) {
+ if (data->error) {
+ dmaengine_terminate_all(c);
+ /* Claim nothing transferred on error... */
+ data->bytes_xfered = 0;
+ }
+ dev = c->device->dev;
+ }
+ dma_unmap_sg(dev, data->sg, host->sg_len, dma_data_dir);
}
static void mmc_omap_send_stop_work(struct work_struct *work)
@@ -525,16 +534,6 @@ mmc_omap_end_of_data(struct mmc_omap_host *host, struct mmc_data *data)
}
static void
-mmc_omap_dma_timer(unsigned long data)
-{
- struct mmc_omap_host *host = (struct mmc_omap_host *) data;
-
- BUG_ON(host->dma_ch < 0);
- omap_free_dma(host->dma_ch);
- host->dma_ch = -1;
-}
-
-static void
mmc_omap_dma_done(struct mmc_omap_host *host, struct mmc_data *data)
{
unsigned long flags;
@@ -669,7 +668,7 @@ mmc_omap_clk_timer(unsigned long data)
static void
mmc_omap_xfer_data(struct mmc_omap_host *host, int write)
{
- int n;
+ int n, nwords;
if (host->buffer_bytes_left == 0) {
host->sg_idx++;
@@ -679,15 +678,23 @@ mmc_omap_xfer_data(struct mmc_omap_host *host, int write)
n = 64;
if (n > host->buffer_bytes_left)
n = host->buffer_bytes_left;
+
+ nwords = n / 2;
+ nwords += n & 1; /* handle odd number of bytes to transfer */
+
host->buffer_bytes_left -= n;
host->total_bytes_left -= n;
host->data->bytes_xfered += n;
if (write) {
- __raw_writesw(host->virt_base + OMAP_MMC_REG(host, DATA), host->buffer, n);
+ __raw_writesw(host->virt_base + OMAP_MMC_REG(host, DATA),
+ host->buffer, nwords);
} else {
- __raw_readsw(host->virt_base + OMAP_MMC_REG(host, DATA), host->buffer, n);
+ __raw_readsw(host->virt_base + OMAP_MMC_REG(host, DATA),
+ host->buffer, nwords);
}
+
+ host->buffer += nwords;
}
static inline void mmc_omap_report_irq(u16 status)
@@ -891,159 +898,15 @@ static void mmc_omap_cover_handler(unsigned long param)
jiffies + msecs_to_jiffies(OMAP_MMC_COVER_POLL_DELAY));
}
-/* Prepare to transfer the next segment of a scatterlist */
-static void
-mmc_omap_prepare_dma(struct mmc_omap_host *host, struct mmc_data *data)
-{
- int dma_ch = host->dma_ch;
- unsigned long data_addr;
- u16 buf, frame;
- u32 count;
- struct scatterlist *sg = &data->sg[host->sg_idx];
- int src_port = 0;
- int dst_port = 0;
- int sync_dev = 0;
-
- data_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
- frame = data->blksz;
- count = sg_dma_len(sg);
-
- if ((data->blocks == 1) && (count > data->blksz))
- count = frame;
-
- host->dma_len = count;
-
- /* FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx and 24xx.
- * Use 16 or 32 word frames when the blocksize is at least that large.
- * Blocksize is usually 512 bytes; but not for some SD reads.
- */
- if (cpu_is_omap15xx() && frame > 32)
- frame = 32;
- else if (frame > 64)
- frame = 64;
- count /= frame;
- frame >>= 1;
-
- if (!(data->flags & MMC_DATA_WRITE)) {
- buf = 0x800f | ((frame - 1) << 8);
-
- if (cpu_class_is_omap1()) {
- src_port = OMAP_DMA_PORT_TIPB;
- dst_port = OMAP_DMA_PORT_EMIFF;
- }
- if (cpu_is_omap24xx())
- sync_dev = OMAP24XX_DMA_MMC1_RX;
-
- omap_set_dma_src_params(dma_ch, src_port,
- OMAP_DMA_AMODE_CONSTANT,
- data_addr, 0, 0);
- omap_set_dma_dest_params(dma_ch, dst_port,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sg), 0, 0);
- omap_set_dma_dest_data_pack(dma_ch, 1);
- omap_set_dma_dest_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
- } else {
- buf = 0x0f80 | ((frame - 1) << 0);
-
- if (cpu_class_is_omap1()) {
- src_port = OMAP_DMA_PORT_EMIFF;
- dst_port = OMAP_DMA_PORT_TIPB;
- }
- if (cpu_is_omap24xx())
- sync_dev = OMAP24XX_DMA_MMC1_TX;
-
- omap_set_dma_dest_params(dma_ch, dst_port,
- OMAP_DMA_AMODE_CONSTANT,
- data_addr, 0, 0);
- omap_set_dma_src_params(dma_ch, src_port,
- OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sg), 0, 0);
- omap_set_dma_src_data_pack(dma_ch, 1);
- omap_set_dma_src_burst_mode(dma_ch, OMAP_DMA_DATA_BURST_4);
- }
-
- /* Max limit for DMA frame count is 0xffff */
- BUG_ON(count > 0xffff);
-
- OMAP_MMC_WRITE(host, BUF, buf);
- omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S16,
- frame, count, OMAP_DMA_SYNC_FRAME,
- sync_dev, 0);
-}
-
-/* A scatterlist segment completed */
-static void mmc_omap_dma_cb(int lch, u16 ch_status, void *data)
+static void mmc_omap_dma_callback(void *priv)
{
- struct mmc_omap_host *host = (struct mmc_omap_host *) data;
- struct mmc_data *mmcdat = host->data;
+ struct mmc_omap_host *host = priv;
+ struct mmc_data *data = host->data;
- if (unlikely(host->dma_ch < 0)) {
- dev_err(mmc_dev(host->mmc),
- "DMA callback while DMA not enabled\n");
- return;
- }
- /* FIXME: We really should do something to _handle_ the errors */
- if (ch_status & OMAP1_DMA_TOUT_IRQ) {
- dev_err(mmc_dev(host->mmc),"DMA timeout\n");
- return;
- }
- if (ch_status & OMAP_DMA_DROP_IRQ) {
- dev_err(mmc_dev(host->mmc), "DMA sync error\n");
- return;
- }
- if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
- return;
- }
- mmcdat->bytes_xfered += host->dma_len;
- host->sg_idx++;
- if (host->sg_idx < host->sg_len) {
- mmc_omap_prepare_dma(host, host->data);
- omap_start_dma(host->dma_ch);
- } else
- mmc_omap_dma_done(host, host->data);
-}
-
-static int mmc_omap_get_dma_channel(struct mmc_omap_host *host, struct mmc_data *data)
-{
- const char *dma_dev_name;
- int sync_dev, dma_ch, is_read, r;
-
- is_read = !(data->flags & MMC_DATA_WRITE);
- del_timer_sync(&host->dma_timer);
- if (host->dma_ch >= 0) {
- if (is_read == host->dma_is_read)
- return 0;
- omap_free_dma(host->dma_ch);
- host->dma_ch = -1;
- }
-
- if (is_read) {
- if (host->id == 0) {
- sync_dev = OMAP_DMA_MMC_RX;
- dma_dev_name = "MMC1 read";
- } else {
- sync_dev = OMAP_DMA_MMC2_RX;
- dma_dev_name = "MMC2 read";
- }
- } else {
- if (host->id == 0) {
- sync_dev = OMAP_DMA_MMC_TX;
- dma_dev_name = "MMC1 write";
- } else {
- sync_dev = OMAP_DMA_MMC2_TX;
- dma_dev_name = "MMC2 write";
- }
- }
- r = omap_request_dma(sync_dev, dma_dev_name, mmc_omap_dma_cb,
- host, &dma_ch);
- if (r != 0) {
- dev_dbg(mmc_dev(host->mmc), "omap_request_dma() failed with %d\n", r);
- return r;
- }
- host->dma_ch = dma_ch;
- host->dma_is_read = is_read;
+ /* If we got to the end of DMA, assume everything went well */
+ data->bytes_xfered += data->blocks * data->blksz;
- return 0;
+ mmc_omap_dma_done(host, data);
}
static inline void set_cmd_timeout(struct mmc_omap_host *host, struct mmc_request *req)
@@ -1118,33 +981,85 @@ mmc_omap_prepare_data(struct mmc_omap_host *host, struct mmc_request *req)
host->sg_idx = 0;
if (use_dma) {
- if (mmc_omap_get_dma_channel(host, data) == 0) {
- enum dma_data_direction dma_data_dir;
-
- if (data->flags & MMC_DATA_WRITE)
- dma_data_dir = DMA_TO_DEVICE;
- else
- dma_data_dir = DMA_FROM_DEVICE;
-
- host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
- sg_len, dma_data_dir);
- host->total_bytes_left = 0;
- mmc_omap_prepare_dma(host, req->data);
- host->brs_received = 0;
- host->dma_done = 0;
- host->dma_in_use = 1;
- } else
- use_dma = 0;
+ enum dma_data_direction dma_data_dir;
+ struct dma_async_tx_descriptor *tx;
+ struct dma_chan *c;
+ u32 burst, *bp;
+ u16 buf;
+
+ /*
+ * FIFO is 16x2 bytes on 15xx, and 32x2 bytes on 16xx
+ * and 24xx. Use 16 or 32 word frames when the
+ * blocksize is at least that large. Blocksize is
+ * usually 512 bytes; but not for some SD reads.
+ */
+ burst = cpu_is_omap15xx() ? 32 : 64;
+ if (burst > data->blksz)
+ burst = data->blksz;
+
+ burst >>= 1;
+
+ if (data->flags & MMC_DATA_WRITE) {
+ c = host->dma_tx;
+ bp = &host->dma_tx_burst;
+ buf = 0x0f80 | (burst - 1) << 0;
+ dma_data_dir = DMA_TO_DEVICE;
+ } else {
+ c = host->dma_rx;
+ bp = &host->dma_rx_burst;
+ buf = 0x800f | (burst - 1) << 8;
+ dma_data_dir = DMA_FROM_DEVICE;
+ }
+
+ if (!c)
+ goto use_pio;
+
+ /* Only reconfigure if we have a different burst size */
+ if (*bp != burst) {
+ struct dma_slave_config cfg;
+
+ cfg.src_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
+ cfg.dst_addr = host->phys_base + OMAP_MMC_REG(host, DATA);
+ cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
+ cfg.src_maxburst = burst;
+ cfg.dst_maxburst = burst;
+
+ if (dmaengine_slave_config(c, &cfg))
+ goto use_pio;
+
+ *bp = burst;
+ }
+
+ host->sg_len = dma_map_sg(c->device->dev, data->sg, sg_len,
+ dma_data_dir);
+ if (host->sg_len == 0)
+ goto use_pio;
+
+ tx = dmaengine_prep_slave_sg(c, data->sg, host->sg_len,
+ data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!tx)
+ goto use_pio;
+
+ OMAP_MMC_WRITE(host, BUF, buf);
+
+ tx->callback = mmc_omap_dma_callback;
+ tx->callback_param = host;
+ dmaengine_submit(tx);
+ host->brs_received = 0;
+ host->dma_done = 0;
+ host->dma_in_use = 1;
+ return;
}
+ use_pio:
/* Revert to PIO? */
- if (!use_dma) {
- OMAP_MMC_WRITE(host, BUF, 0x1f1f);
- host->total_bytes_left = data->blocks * block_size;
- host->sg_len = sg_len;
- mmc_omap_sg_to_buf(host);
- host->dma_in_use = 0;
- }
+ OMAP_MMC_WRITE(host, BUF, 0x1f1f);
+ host->total_bytes_left = data->blocks * block_size;
+ host->sg_len = sg_len;
+ mmc_omap_sg_to_buf(host);
+ host->dma_in_use = 0;
}
static void mmc_omap_start_request(struct mmc_omap_host *host,
@@ -1157,8 +1072,12 @@ static void mmc_omap_start_request(struct mmc_omap_host *host,
/* only touch fifo AFTER the controller readies it */
mmc_omap_prepare_data(host, req);
mmc_omap_start_command(host, req->cmd);
- if (host->dma_in_use)
- omap_start_dma(host->dma_ch);
+ if (host->dma_in_use) {
+ struct dma_chan *c = host->data->flags & MMC_DATA_WRITE ?
+ host->dma_tx : host->dma_rx;
+
+ dma_async_issue_pending(c);
+ }
}
static void mmc_omap_request(struct mmc_host *mmc, struct mmc_request *req)
@@ -1400,6 +1319,8 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
struct mmc_omap_host *host = NULL;
struct resource *res;
+ dma_cap_mask_t mask;
+ unsigned sig;
int i, ret = 0;
int irq;
@@ -1439,7 +1360,6 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
setup_timer(&host->clk_timer, mmc_omap_clk_timer, (unsigned long) host);
spin_lock_init(&host->dma_lock);
- setup_timer(&host->dma_timer, mmc_omap_dma_timer, (unsigned long) host);
spin_lock_init(&host->slot_lock);
init_waitqueue_head(&host->slot_wq);
@@ -1450,11 +1370,7 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
host->id = pdev->id;
host->mem_res = res;
host->irq = irq;
-
host->use_dma = 1;
- host->dev->dma_mask = &pdata->dma_mask;
- host->dma_ch = -1;
-
host->irq = irq;
host->phys_base = host->mem_res->start;
host->virt_base = ioremap(res->start, resource_size(res));
@@ -1474,9 +1390,48 @@ static int __devinit mmc_omap_probe(struct platform_device *pdev)
goto err_free_iclk;
}
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ host->dma_tx_burst = -1;
+ host->dma_rx_burst = -1;
+
+ if (cpu_is_omap24xx())
+ sig = host->id == 0 ? OMAP24XX_DMA_MMC1_TX : OMAP24XX_DMA_MMC2_TX;
+ else
+ sig = host->id == 0 ? OMAP_DMA_MMC_TX : OMAP_DMA_MMC2_TX;
+ host->dma_tx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
+#if 0
+ if (!host->dma_tx) {
+ dev_err(host->dev, "unable to obtain TX DMA engine channel %u\n",
+ sig);
+ goto err_dma;
+ }
+#else
+ if (!host->dma_tx)
+ dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
+ sig);
+#endif
+ if (cpu_is_omap24xx())
+ sig = host->id == 0 ? OMAP24XX_DMA_MMC1_RX : OMAP24XX_DMA_MMC2_RX;
+ else
+ sig = host->id == 0 ? OMAP_DMA_MMC_RX : OMAP_DMA_MMC2_RX;
+ host->dma_rx = dma_request_channel(mask, omap_dma_filter_fn, &sig);
+#if 0
+ if (!host->dma_rx) {
+ dev_err(host->dev, "unable to obtain RX DMA engine channel %u\n",
+ sig);
+ goto err_dma;
+ }
+#else
+ if (!host->dma_rx)
+ dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
+ sig);
+#endif
+
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
- goto err_free_fclk;
+ goto err_free_dma;
if (pdata->init != NULL) {
ret = pdata->init(&pdev->dev);
@@ -1510,7 +1465,11 @@ err_plat_cleanup:
pdata->cleanup(&pdev->dev);
err_free_irq:
free_irq(host->irq, host);
-err_free_fclk:
+err_free_dma:
+ if (host->dma_tx)
+ dma_release_channel(host->dma_tx);
+ if (host->dma_rx)
+ dma_release_channel(host->dma_rx);
clk_put(host->fclk);
err_free_iclk:
clk_disable(host->iclk);
@@ -1545,6 +1504,11 @@ static int __devexit mmc_omap_remove(struct platform_device *pdev)
clk_disable(host->iclk);
clk_put(host->iclk);
+ if (host->dma_tx)
+ dma_release_channel(host->dma_tx);
+ if (host->dma_rx)
+ dma_release_channel(host->dma_rx);
+
iounmap(host->virt_base);
release_mem_region(pdev->resource[0].start,
pdev->resource[0].end - pdev->resource[0].start + 1);
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 968453878c4..686e256764c 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -19,6 +19,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/debugfs.h>
+#include <linux/dmaengine.h>
#include <linux/seq_file.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
@@ -29,6 +30,7 @@
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>
+#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/core.h>
#include <linux/mmc/mmc.h>
@@ -37,7 +39,6 @@
#include <linux/gpio.h>
#include <linux/regulator/consumer.h>
#include <linux/pm_runtime.h>
-#include <plat/dma.h>
#include <mach/hardware.h>
#include <plat/board.h>
#include <plat/mmc.h>
@@ -166,7 +167,8 @@ struct omap_hsmmc_host {
int suspended;
int irq;
int use_dma, dma_ch;
- int dma_line_tx, dma_line_rx;
+ struct dma_chan *tx_chan;
+ struct dma_chan *rx_chan;
int slot_id;
int response_busy;
int context_loss;
@@ -797,6 +799,12 @@ omap_hsmmc_get_dma_dir(struct omap_hsmmc_host *host, struct mmc_data *data)
return DMA_FROM_DEVICE;
}
+static struct dma_chan *omap_hsmmc_get_dma_chan(struct omap_hsmmc_host *host,
+ struct mmc_data *data)
+{
+ return data->flags & MMC_DATA_WRITE ? host->tx_chan : host->rx_chan;
+}
+
static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_request *mrq)
{
int dma_ch;
@@ -889,10 +897,13 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno)
spin_unlock_irqrestore(&host->irq_lock, flags);
if (host->use_dma && dma_ch != -1) {
- dma_unmap_sg(mmc_dev(host->mmc), host->data->sg,
- host->data->sg_len,
+ struct dma_chan *chan = omap_hsmmc_get_dma_chan(host, host->data);
+
+ dmaengine_terminate_all(chan);
+ dma_unmap_sg(chan->device->dev,
+ host->data->sg, host->data->sg_len,
omap_hsmmc_get_dma_dir(host, host->data));
- omap_free_dma(dma_ch);
+
host->data->host_cookie = 0;
}
host->data = NULL;
@@ -1190,90 +1201,29 @@ static irqreturn_t omap_hsmmc_detect(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static int omap_hsmmc_get_dma_sync_dev(struct omap_hsmmc_host *host,
- struct mmc_data *data)
-{
- int sync_dev;
-
- if (data->flags & MMC_DATA_WRITE)
- sync_dev = host->dma_line_tx;
- else
- sync_dev = host->dma_line_rx;
- return sync_dev;
-}
-
-static void omap_hsmmc_config_dma_params(struct omap_hsmmc_host *host,
- struct mmc_data *data,
- struct scatterlist *sgl)
-{
- int blksz, nblk, dma_ch;
-
- dma_ch = host->dma_ch;
- if (data->flags & MMC_DATA_WRITE) {
- omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sgl), 0, 0);
- } else {
- omap_set_dma_src_params(dma_ch, 0, OMAP_DMA_AMODE_CONSTANT,
- (host->mapbase + OMAP_HSMMC_DATA), 0, 0);
- omap_set_dma_dest_params(dma_ch, 0, OMAP_DMA_AMODE_POST_INC,
- sg_dma_address(sgl), 0, 0);
- }
-
- blksz = host->data->blksz;
- nblk = sg_dma_len(sgl) / blksz;
-
- omap_set_dma_transfer_params(dma_ch, OMAP_DMA_DATA_TYPE_S32,
- blksz / 4, nblk, OMAP_DMA_SYNC_FRAME,
- omap_hsmmc_get_dma_sync_dev(host, data),
- !(data->flags & MMC_DATA_WRITE));
-
- omap_start_dma(dma_ch);
-}
-
-/*
- * DMA call back function
- */
-static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
+static void omap_hsmmc_dma_callback(void *param)
{
- struct omap_hsmmc_host *host = cb_data;
+ struct omap_hsmmc_host *host = param;
+ struct dma_chan *chan;
struct mmc_data *data;
- int dma_ch, req_in_progress;
- unsigned long flags;
-
- if (!(ch_status & OMAP_DMA_BLOCK_IRQ)) {
- dev_warn(mmc_dev(host->mmc), "unexpected dma status %x\n",
- ch_status);
- return;
- }
+ int req_in_progress;
- spin_lock_irqsave(&host->irq_lock, flags);
+ spin_lock_irq(&host->irq_lock);
if (host->dma_ch < 0) {
- spin_unlock_irqrestore(&host->irq_lock, flags);
+ spin_unlock_irq(&host->irq_lock);
return;
}
data = host->mrq->data;
- host->dma_sg_idx++;
- if (host->dma_sg_idx < host->dma_len) {
- /* Fire up the next transfer. */
- omap_hsmmc_config_dma_params(host, data,
- data->sg + host->dma_sg_idx);
- spin_unlock_irqrestore(&host->irq_lock, flags);
- return;
- }
-
+ chan = omap_hsmmc_get_dma_chan(host, data);
if (!data->host_cookie)
- dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ dma_unmap_sg(chan->device->dev,
+ data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
req_in_progress = host->req_in_progress;
- dma_ch = host->dma_ch;
host->dma_ch = -1;
- spin_unlock_irqrestore(&host->irq_lock, flags);
-
- omap_free_dma(dma_ch);
+ spin_unlock_irq(&host->irq_lock);
/* If DMA has finished after TC, complete the request */
if (!req_in_progress) {
@@ -1286,7 +1236,8 @@ static void omap_hsmmc_dma_cb(int lch, u16 ch_status, void *cb_data)
static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_data *data,
- struct omap_hsmmc_next *next)
+ struct omap_hsmmc_next *next,
+ struct dma_chan *chan)
{
int dma_len;
@@ -1301,8 +1252,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
/* Check if next job is already prepared */
if (next ||
(!next && data->host_cookie != host->next_data.cookie)) {
- dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
+ dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len,
omap_hsmmc_get_dma_dir(host, data));
} else {
@@ -1329,8 +1279,11 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host,
static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
struct mmc_request *req)
{
- int dma_ch = 0, ret = 0, i;
+ struct dma_slave_config cfg;
+ struct dma_async_tx_descriptor *tx;
+ int ret = 0, i;
struct mmc_data *data = req->data;
+ struct dma_chan *chan;
/* Sanity check: all the SG entries must be aligned by block size. */
for (i = 0; i < data->sg_len; i++) {
@@ -1348,22 +1301,41 @@ static int omap_hsmmc_start_dma_transfer(struct omap_hsmmc_host *host,
BUG_ON(host->dma_ch != -1);
- ret = omap_request_dma(omap_hsmmc_get_dma_sync_dev(host, data),
- "MMC/SD", omap_hsmmc_dma_cb, host, &dma_ch);
- if (ret != 0) {
- dev_err(mmc_dev(host->mmc),
- "%s: omap_request_dma() failed with %d\n",
- mmc_hostname(host->mmc), ret);
+ chan = omap_hsmmc_get_dma_chan(host, data);
+
+ cfg.src_addr = host->mapbase + OMAP_HSMMC_DATA;
+ cfg.dst_addr = host->mapbase + OMAP_HSMMC_DATA;
+ cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+ cfg.src_maxburst = data->blksz / 4;
+ cfg.dst_maxburst = data->blksz / 4;
+
+ ret = dmaengine_slave_config(chan, &cfg);
+ if (ret)
return ret;
- }
- ret = omap_hsmmc_pre_dma_transfer(host, data, NULL);
+
+ ret = omap_hsmmc_pre_dma_transfer(host, data, NULL, chan);
if (ret)
return ret;
- host->dma_ch = dma_ch;
- host->dma_sg_idx = 0;
+ tx = dmaengine_prep_slave_sg(chan, data->sg, data->sg_len,
+ data->flags & MMC_DATA_WRITE ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM,
+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
+ if (!tx) {
+ dev_err(mmc_dev(host->mmc), "prep_slave_sg() failed\n");
+ /* FIXME: cleanup */
+ return -1;
+ }
+
+ tx->callback = omap_hsmmc_dma_callback;
+ tx->callback_param = host;
- omap_hsmmc_config_dma_params(host, data, data->sg);
+ /* Does not fail */
+ dmaengine_submit(tx);
+
+ host->dma_ch = 1;
+
+ dma_async_issue_pending(chan);
return 0;
}
@@ -1445,11 +1417,11 @@ static void omap_hsmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct omap_hsmmc_host *host = mmc_priv(mmc);
struct mmc_data *data = mrq->data;
- if (host->use_dma) {
- if (data->host_cookie)
- dma_unmap_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
- omap_hsmmc_get_dma_dir(host, data));
+ if (host->use_dma && data->host_cookie) {
+ struct dma_chan *c = omap_hsmmc_get_dma_chan(host, data);
+
+ dma_unmap_sg(c->device->dev, data->sg, data->sg_len,
+ omap_hsmmc_get_dma_dir(host, data));
data->host_cookie = 0;
}
}
@@ -1464,10 +1436,13 @@ static void omap_hsmmc_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
return ;
}
- if (host->use_dma)
+ if (host->use_dma) {
+ struct dma_chan *c = omap_hsmmc_get_dma_chan(host, mrq->data);
+
if (omap_hsmmc_pre_dma_transfer(host, mrq->data,
- &host->next_data))
+ &host->next_data, c))
mrq->data->host_cookie = 0;
+ }
}
/*
@@ -1800,6 +1775,8 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
struct resource *res;
int ret, irq;
const struct of_device_id *match;
+ dma_cap_mask_t mask;
+ unsigned tx_req, rx_req;
match = of_match_device(of_match_ptr(omap_mmc_of_match), &pdev->dev);
if (match) {
@@ -1844,7 +1821,6 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
host->pdata = pdata;
host->dev = &pdev->dev;
host->use_dma = 1;
- host->dev->dma_mask = &pdata->dma_mask;
host->dma_ch = -1;
host->irq = irq;
host->slot_id = 0;
@@ -1934,7 +1910,7 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
ret = -ENXIO;
goto err_irq;
}
- host->dma_line_tx = res->start;
+ tx_req = res->start;
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
if (!res) {
@@ -1942,7 +1918,24 @@ static int __devinit omap_hsmmc_probe(struct platform_device *pdev)
ret = -ENXIO;
goto err_irq;
}
- host->dma_line_rx = res->start;
+ rx_req = res->start;
+
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
+
+ host->rx_chan = dma_request_channel(mask, omap_dma_filter_fn, &rx_req);
+ if (!host->rx_chan) {
+ dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel %u\n", rx_req);
+ ret = -ENXIO;
+ goto err_irq;
+ }
+
+ host->tx_chan = dma_request_channel(mask, omap_dma_filter_fn, &tx_req);
+ if (!host->tx_chan) {
+ dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel %u\n", tx_req);
+ ret = -ENXIO;
+ goto err_irq;
+ }
/* Request IRQ for MMC operations */
ret = request_irq(host->irq, omap_hsmmc_irq, 0,
@@ -2021,6 +2014,10 @@ err_reg:
err_irq_cd_init:
free_irq(host->irq, host);
err_irq:
+ if (host->tx_chan)
+ dma_release_channel(host->tx_chan);
+ if (host->rx_chan)
+ dma_release_channel(host->rx_chan);
pm_runtime_put_sync(host->dev);
pm_runtime_disable(host->dev);
clk_put(host->fclk);
@@ -2056,6 +2053,11 @@ static int __devexit omap_hsmmc_remove(struct platform_device *pdev)
if (mmc_slot(host).card_detect_irq)
free_irq(mmc_slot(host).card_detect_irq, host);
+ if (host->tx_chan)
+ dma_release_channel(host->tx_chan);
+ if (host->rx_chan)
+ dma_release_channel(host->rx_chan);
+
pm_runtime_put_sync(host->dev);
pm_runtime_disable(host->dev);
clk_put(host->fclk);
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index b97b2f5dafd..d25f9ab9a54 100644
--- a/drivers/mmc/host/sdhci-esdhc.h
+++ b/drivers/mmc/host/sdhci-esdhc.h
@@ -48,14 +48,14 @@ static inline void esdhc_set_clock(struct sdhci_host *host, unsigned int clock)
int div = 1;
u32 temp;
+ if (clock == 0)
+ goto out;
+
temp = sdhci_readl(host, ESDHC_SYSTEM_CONTROL);
temp &= ~(ESDHC_CLOCK_IPGEN | ESDHC_CLOCK_HCKEN | ESDHC_CLOCK_PEREN
| ESDHC_CLOCK_MASK);
sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL);
- if (clock == 0)
- goto out;
-
while (host->max_clk / pre_div / 16 > clock && pre_div < 256)
pre_div *= 2;
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index b2af7136cd2..5d8142773fa 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -213,8 +213,6 @@ struct sh_mmcif_host {
struct mmc_host *mmc;
struct mmc_request *mrq;
struct platform_device *pd;
- struct sh_dmae_slave dma_slave_tx;
- struct sh_dmae_slave dma_slave_rx;
struct clk *hclk;
unsigned int clk;
int bus_width;
@@ -373,59 +371,69 @@ static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host)
desc, cookie);
}
-static bool sh_mmcif_filter(struct dma_chan *chan, void *arg)
-{
- dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg);
- chan->private = arg;
- return true;
-}
-
static void sh_mmcif_request_dma(struct sh_mmcif_host *host,
struct sh_mmcif_plat_data *pdata)
{
- struct sh_dmae_slave *tx, *rx;
+ struct resource *res = platform_get_resource(host->pd, IORESOURCE_MEM, 0);
+ struct dma_slave_config cfg;
+ dma_cap_mask_t mask;
+ int ret;
+
host->dma_active = false;
if (!pdata)
return;
+ if (pdata->slave_id_tx <= 0 || pdata->slave_id_rx <= 0)
+ return;
+
/* We can only either use DMA for both Tx and Rx or not use it at all */
- if (pdata->dma) {
- dev_warn(&host->pd->dev,
- "Update your platform to use embedded DMA slave IDs\n");
- tx = &pdata->dma->chan_priv_tx;
- rx = &pdata->dma->chan_priv_rx;
- } else {
- tx = &host->dma_slave_tx;
- tx->slave_id = pdata->slave_id_tx;
- rx = &host->dma_slave_rx;
- rx->slave_id = pdata->slave_id_rx;
- }
- if (tx->slave_id > 0 && rx->slave_id > 0) {
- dma_cap_mask_t mask;
+ dma_cap_zero(mask);
+ dma_cap_set(DMA_SLAVE, mask);
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
+ host->chan_tx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_tx);
+ dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
+ host->chan_tx);
- host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, tx);
- dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__,
- host->chan_tx);
+ if (!host->chan_tx)
+ return;
- if (!host->chan_tx)
- return;
+ cfg.slave_id = pdata->slave_id_tx;
+ cfg.direction = DMA_MEM_TO_DEV;
+ cfg.dst_addr = res->start + MMCIF_CE_DATA;
+ cfg.src_addr = 0;
+ ret = dmaengine_slave_config(host->chan_tx, &cfg);
+ if (ret < 0)
+ goto ecfgtx;
- host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, rx);
- dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
- host->chan_rx);
+ host->chan_rx = dma_request_channel(mask, shdma_chan_filter,
+ (void *)pdata->slave_id_rx);
+ dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__,
+ host->chan_rx);
- if (!host->chan_rx) {
- dma_release_channel(host->chan_tx);
- host->chan_tx = NULL;
- return;
- }
+ if (!host->chan_rx)
+ goto erqrx;
- init_completion(&host->dma_complete);
- }
+ cfg.slave_id = pdata->slave_id_rx;
+ cfg.direction = DMA_DEV_TO_MEM;
+ cfg.dst_addr = 0;
+ cfg.src_addr = res->start + MMCIF_CE_DATA;
+ ret = dmaengine_slave_config(host->chan_rx, &cfg);
+ if (ret < 0)
+ goto ecfgrx;
+
+ init_completion(&host->dma_complete);
+
+ return;
+
+ecfgrx:
+ dma_release_channel(host->chan_rx);
+ host->chan_rx = NULL;
+erqrx:
+ecfgtx:
+ dma_release_channel(host->chan_tx);
+ host->chan_tx = NULL;
}
static void sh_mmcif_release_dma(struct sh_mmcif_host *host)
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index a842939e465..0bdc146178d 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -169,10 +169,10 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->get_cd = sh_mobile_sdhi_get_cd;
if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
- priv->param_tx.slave_id = p->dma_slave_tx;
- priv->param_rx.slave_id = p->dma_slave_rx;
- priv->dma_priv.chan_priv_tx = &priv->param_tx;
- priv->dma_priv.chan_priv_rx = &priv->param_rx;
+ priv->param_tx.shdma_slave.slave_id = p->dma_slave_tx;
+ priv->param_rx.shdma_slave.slave_id = p->dma_slave_rx;
+ priv->dma_priv.chan_priv_tx = &priv->param_tx.shdma_slave;
+ priv->dma_priv.chan_priv_rx = &priv->param_rx.shdma_slave;
priv->dma_priv.alignment_shift = 1; /* 2-byte alignment */
mmc_data->dma = &priv->dma_priv;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-27 04:29:40 +0000