summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/dw_mmc.c59
-rw-r--r--drivers/mmc/mmc_spi.c10
2 files changed, 47 insertions, 22 deletions
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c
index 53a8aca..77b87e0 100644
--- a/drivers/mmc/dw_mmc.c
+++ b/drivers/mmc/dw_mmc.c
@@ -8,6 +8,7 @@
#include <bouncebuf.h>
#include <common.h>
+#include <errno.h>
#include <malloc.h>
#include <mmc.h>
#include <dwmmc.h>
@@ -110,7 +111,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
struct dwmci_host *host = mmc->priv;
ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac,
data ? DIV_ROUND_UP(data->blocks, 8) : 0);
- int flags = 0, i;
+ int ret = 0, flags = 0, i;
unsigned int timeout = 100000;
u32 retry = 10000;
u32 mask, ctrl;
@@ -119,7 +120,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
while (dwmci_readl(host, DWMCI_STATUS) & DWMCI_BUSY) {
if (get_timer(start) > timeout) {
- printf("%s: Timeout on data busy\n", __func__);
+ debug("%s: Timeout on data busy\n", __func__);
return TIMEOUT;
}
}
@@ -178,7 +179,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
}
if (i == retry) {
- printf("%s: Timeout.\n", __func__);
+ debug("%s: Timeout.\n", __func__);
return TIMEOUT;
}
@@ -194,8 +195,8 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
debug("%s: Response Timeout.\n", __func__);
return TIMEOUT;
} else if (mask & DWMCI_INTMSK_RE) {
- printf("%s: Response Error.\n", __func__);
- return -1;
+ debug("%s: Response Error.\n", __func__);
+ return -EIO;
}
@@ -211,13 +212,31 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
}
if (data) {
- do {
+ start = get_timer(0);
+ timeout = 1000;
+ for (;;) {
mask = dwmci_readl(host, DWMCI_RINTSTS);
+ /* Error during data transfer. */
if (mask & (DWMCI_DATA_ERR | DWMCI_DATA_TOUT)) {
- printf("%s: DATA ERROR!\n", __func__);
- return -1;
+ debug("%s: DATA ERROR!\n", __func__);
+ ret = -EINVAL;
+ break;
+ }
+
+ /* Data arrived correctly. */
+ if (mask & DWMCI_INTMSK_DTO) {
+ ret = 0;
+ break;
}
- } while (!(mask & DWMCI_INTMSK_DTO));
+
+ /* Check for timeout. */
+ if (get_timer(start) > timeout) {
+ debug("%s: Timeout waiting for data!\n",
+ __func__);
+ ret = TIMEOUT;
+ break;
+ }
+ }
dwmci_writel(host, DWMCI_RINTSTS, mask);
@@ -230,7 +249,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
udelay(100);
- return 0;
+ return ret;
}
static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
@@ -251,7 +270,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
else if (host->bus_hz)
sclk = host->bus_hz;
else {
- printf("%s: Didn't get source clock value.\n", __func__);
+ debug("%s: Didn't get source clock value.\n", __func__);
return -EINVAL;
}
@@ -270,7 +289,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
do {
status = dwmci_readl(host, DWMCI_CMD);
if (timeout-- < 0) {
- printf("%s: Timeout!\n", __func__);
+ debug("%s: Timeout!\n", __func__);
return -ETIMEDOUT;
}
} while (status & DWMCI_CMD_START);
@@ -285,7 +304,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
do {
status = dwmci_readl(host, DWMCI_CMD);
if (timeout-- < 0) {
- printf("%s: Timeout!\n", __func__);
+ debug("%s: Timeout!\n", __func__);
return -ETIMEDOUT;
}
} while (status & DWMCI_CMD_START);
@@ -339,8 +358,8 @@ static int dwmci_init(struct mmc *mmc)
dwmci_writel(host, DWMCI_PWREN, 1);
if (!dwmci_wait_reset(host, DWMCI_RESET_ALL)) {
- printf("%s[%d] Fail-reset!!\n", __func__, __LINE__);
- return -1;
+ debug("%s[%d] Fail-reset!!\n", __func__, __LINE__);
+ return -EIO;
}
/* Enumerate at 400KHz */
@@ -354,9 +373,15 @@ static int dwmci_init(struct mmc *mmc)
dwmci_writel(host, DWMCI_IDINTEN, 0);
dwmci_writel(host, DWMCI_BMOD, 1);
- if (host->fifoth_val) {
- dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
+ if (!host->fifoth_val) {
+ uint32_t fifo_size;
+
+ fifo_size = dwmci_readl(host, DWMCI_FIFOTH);
+ fifo_size = ((fifo_size & RX_WMARK_MASK) >> RX_WMARK_SHIFT) + 1;
+ host->fifoth_val = MSIZE(0x2) | RX_WMARK(fifo_size / 2 - 1) |
+ TX_WMARK(fifo_size / 2);
}
+ dwmci_writel(host, DWMCI_FIFOTH, host->fifoth_val);
dwmci_writel(host, DWMCI_CLKENA, 0);
dwmci_writel(host, DWMCI_CLKSRC, 0);
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c
index 5b5b33a..9032a73 100644
--- a/drivers/mmc/mmc_spi.c
+++ b/drivers/mmc/mmc_spi.c
@@ -11,7 +11,7 @@
#include <spi.h>
#include <crc.h>
#include <linux/crc7.h>
-#include <linux/byteorder/swab.h>
+#include <asm/byteorder.h>
/* MMC/SD in SPI mode reports R1 status always */
#define R1_SPI_IDLE (1 << 0)
@@ -91,7 +91,7 @@ static uint mmc_spi_readdata(struct mmc *mmc, void *xbuf,
spi_xfer(spi, bsize * 8, NULL, buf, 0);
spi_xfer(spi, 2 * 8, NULL, &crc, 0);
#ifdef CONFIG_MMC_SPI_CRC_ON
- if (swab16(cyg_crc16(buf, bsize)) != crc) {
+ if (be_to_cpu16(cyg_crc16(buf, bsize)) != crc) {
debug("%s: CRC error\n", mmc->cfg->name);
r1 = R1_SPI_COM_CRC;
break;
@@ -120,7 +120,7 @@ static uint mmc_spi_writedata(struct mmc *mmc, const void *xbuf,
tok[1] = multi ? SPI_TOKEN_MULTI_WRITE : SPI_TOKEN_SINGLE;
while (bcnt--) {
#ifdef CONFIG_MMC_SPI_CRC_ON
- crc = swab16(cyg_crc16((u8 *)buf, bsize));
+ crc = cpu_to_be16(cyg_crc16((u8 *)buf, bsize));
#endif
spi_xfer(spi, 2 * 8, tok, NULL, 0);
spi_xfer(spi, bsize * 8, buf, NULL, 0);
@@ -193,7 +193,7 @@ static int mmc_spi_request(struct mmc *mmc, struct mmc_cmd *cmd,
} else if (cmd->resp_type == MMC_RSP_R2) {
r1 = mmc_spi_readdata(mmc, cmd->response, 1, 16);
for (i = 0; i < 4; i++)
- cmd->response[i] = swab32(cmd->response[i]);
+ cmd->response[i] = be32_to_cpu(cmd->response[i]);
debug("r128 %x %x %x %x\n", cmd->response[0], cmd->response[1],
cmd->response[2], cmd->response[3]);
} else if (!data) {
@@ -205,7 +205,7 @@ static int mmc_spi_request(struct mmc *mmc, struct mmc_cmd *cmd,
case SD_CMD_SEND_IF_COND:
case MMC_CMD_SPI_READ_OCR:
spi_xfer(spi, 4 * 8, NULL, cmd->response, 0);
- cmd->response[0] = swab32(cmd->response[0]);
+ cmd->response[0] = be32_to_cpu(cmd->response[0]);
debug("r32 %x\n", cmd->response[0]);
break;
case MMC_CMD_SEND_STATUS:
generated by cgit v0.10.2 at 2024-11-02 02:33:49 (GMT)