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authorSonic Zhang <sonic.zhang@analog.com>2012-08-16 11:26:00 +0800
committersonic <sonic@sonic-linuxvm.(none)>2013-03-04 13:42:07 +0800
commit187f32fac33be46177968e7ceeb8ab99836a6601 (patch)
treecbc646cf50a8166d286a08d75ad4b0f739ddddb1 /drivers
parent320ec9dfb72219116f1879d1be0d49e7d3baaad8 (diff)
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blackfin: bf60x: add rsi/sdh support
Add rsi/sdh support for bf60x. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bob Liu <lliubbo@gmail.com> Signed-off-by: Sonic Zhang <sonic.adi@gmail.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/bfin_sdh.c68
1 files changed, 52 insertions, 16 deletions
diff --git a/drivers/mmc/bfin_sdh.c b/drivers/mmc/bfin_sdh.c
index 8d59d46..0f98b96 100644
--- a/drivers/mmc/bfin_sdh.c
+++ b/drivers/mmc/bfin_sdh.c
@@ -19,9 +19,7 @@
#include <asm/mach-common/bits/sdh.h>
#include <asm/mach-common/bits/dma.h>
-#if defined(__ADSPBF50x__) || defined(__ADSPBF51x__)
-# define bfin_read_SDH_PWR_CTL bfin_read_RSI_PWR_CONTROL
-# define bfin_write_SDH_PWR_CTL bfin_write_RSI_PWR_CONTROL
+#if defined(__ADSPBF50x__) || defined(__ADSPBF51x__) || defined(__ADSPBF60x__)
# define bfin_read_SDH_CLK_CTL bfin_read_RSI_CLK_CONTROL
# define bfin_write_SDH_CLK_CTL bfin_write_RSI_CLK_CONTROL
# define bfin_write_SDH_ARGUMENT bfin_write_RSI_ARGUMENT
@@ -38,10 +36,21 @@
# define bfin_write_SDH_STATUS_CLR bfin_write_RSI_STATUSCL
# define bfin_read_SDH_CFG bfin_read_RSI_CONFIG
# define bfin_write_SDH_CFG bfin_write_RSI_CONFIG
+# if defined(__ADSPBF60x__)
+# define bfin_read_SDH_BLK_SIZE bfin_read_RSI_BLKSZ
+# define bfin_write_SDH_BLK_SIZE bfin_write_RSI_BLKSZ
+# define bfin_write_DMA_START_ADDR bfin_write_DMA10_START_ADDR
+# define bfin_write_DMA_X_COUNT bfin_write_DMA10_X_COUNT
+# define bfin_write_DMA_X_MODIFY bfin_write_DMA10_X_MODIFY
+# define bfin_write_DMA_CONFIG bfin_write_DMA10_CONFIG
+# else
+# define bfin_read_SDH_PWR_CTL bfin_read_RSI_PWR_CONTROL
+# define bfin_write_SDH_PWR_CTL bfin_write_RSI_PWR_CONTROL
# define bfin_write_DMA_START_ADDR bfin_write_DMA4_START_ADDR
# define bfin_write_DMA_X_COUNT bfin_write_DMA4_X_COUNT
# define bfin_write_DMA_X_MODIFY bfin_write_DMA4_X_MODIFY
# define bfin_write_DMA_CONFIG bfin_write_DMA4_CONFIG
+# endif
# define PORTMUX_PINS \
{ P_RSI_DATA0, P_RSI_DATA1, P_RSI_DATA2, P_RSI_DATA3, P_RSI_CMD, P_RSI_CLK, 0 }
#elif defined(__ADSPBF54x__)
@@ -70,6 +79,9 @@ sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd)
sdh_cmd |= CMD_RSP;
if (flags & MMC_RSP_136)
sdh_cmd |= CMD_L_RSP;
+#ifdef RSI_BLKSZ
+ sdh_cmd |= CMD_DATA0_BUSY;
+#endif
bfin_write_SDH_ARGUMENT(arg);
bfin_write_SDH_COMMAND(sdh_cmd);
@@ -104,6 +116,12 @@ sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd)
bfin_write_SDH_STATUS_CLR(CMD_SENT_STAT | CMD_RESP_END_STAT |
CMD_TIMEOUT_STAT | CMD_CRC_FAIL_STAT);
+#ifdef RSI_BLKSZ
+ /* wait till card ready */
+ while (!(bfin_read_RSI_ESTAT() & SD_CARD_READY))
+ continue;
+ bfin_write_RSI_ESTAT(SD_CARD_READY);
+#endif
return ret;
}
@@ -113,16 +131,19 @@ static int sdh_setup_data(struct mmc *mmc, struct mmc_data *data)
{
u16 data_ctl = 0;
u16 dma_cfg = 0;
- int ret = 0;
unsigned long data_size = data->blocksize * data->blocks;
/* Don't support write yet. */
if (data->flags & MMC_DATA_WRITE)
return UNUSABLE_ERR;
+#ifndef RSI_BLKSZ
data_ctl |= ((ffs(data_size) - 1) << 4);
+#else
+ bfin_write_SDH_BLK_SIZE(data_size);
+#endif
data_ctl |= DTX_DIR;
bfin_write_SDH_DATA_CTL(data_ctl);
- dma_cfg = WDSIZE_32 | RESTART | WNR | DMAEN;
+ dma_cfg = WDSIZE_32 | PSIZE_32 | RESTART | WNR | DMAEN;
bfin_write_SDH_DATA_TIMER(-1);
@@ -137,7 +158,7 @@ static int sdh_setup_data(struct mmc *mmc, struct mmc_data *data)
/* kick off transfer */
bfin_write_SDH_DATA_CTL(bfin_read_SDH_DATA_CTL() | DTX_DMA_E | DTX_E);
- return ret;
+ return 0;
}
@@ -147,13 +168,23 @@ static int bfin_sdh_request(struct mmc *mmc, struct mmc_cmd *cmd,
u32 status;
int ret = 0;
+ if (data) {
+ ret = sdh_setup_data(mmc, data);
+ if (ret)
+ return ret;
+ }
+
ret = sdh_send_cmd(mmc, cmd);
if (ret) {
+ bfin_write_SDH_COMMAND(0);
+ bfin_write_DMA_CONFIG(0);
+ bfin_write_SDH_DATA_CTL(0);
+ SSYNC();
printf("sending CMD%d failed\n", cmd->cmdidx);
return ret;
}
+
if (data) {
- ret = sdh_setup_data(mmc, data);
do {
udelay(1);
status = bfin_read_SDH_STATUS();
@@ -208,10 +239,12 @@ static void bfin_sdh_set_ios(struct mmc *mmc)
if (mmc->bus_width == 4) {
cfg = bfin_read_SDH_CFG();
- cfg &= ~0x80;
- cfg |= 0x40;
+#ifndef RSI_BLKSZ
+ cfg &= ~PD_SDDAT3;
+#endif
+ cfg |= PUP_SDDAT3;
bfin_write_SDH_CFG(cfg);
- clk_ctl |= WIDE_BUS;
+ clk_ctl |= WIDE_BUS_4;
}
bfin_write_SDH_CLK_CTL(clk_ctl);
sdh_set_clk(mmc->clock);
@@ -220,20 +253,23 @@ static void bfin_sdh_set_ios(struct mmc *mmc)
static int bfin_sdh_init(struct mmc *mmc)
{
const unsigned short pins[] = PORTMUX_PINS;
- u16 pwr_ctl = 0;
+ int ret;
/* Initialize sdh controller */
- peripheral_request_list(pins, "bfin_sdh");
+ ret = peripheral_request_list(pins, "bfin_sdh");
+ if (ret < 0)
+ return ret;
#if defined(__ADSPBF54x__)
bfin_write_DMAC1_PERIMUX(bfin_read_DMAC1_PERIMUX() | 0x1);
#endif
bfin_write_SDH_CFG(bfin_read_SDH_CFG() | CLKS_EN);
/* Disable card detect pin */
bfin_write_SDH_CFG((bfin_read_SDH_CFG() & 0x1F) | 0x60);
-
- pwr_ctl |= ROD_CTL;
- pwr_ctl |= PWR_ON;
- bfin_write_SDH_PWR_CTL(pwr_ctl);
+#ifndef RSI_BLKSZ
+ bfin_write_SDH_PWR_CTL(PWR_ON | ROD_CTL);
+#else
+ bfin_write_SDH_CFG(bfin_read_SDH_CFG() | PWR_ON);
+#endif
return 0;
}