From: Sonic Zhang sonic.zhang@analog.com
Add rsi/sdh support for bf60x.
Signed-off-by: Sonic Zhang sonic.zhang@analog.com Signed-off-by: Bob Liu lliubbo@gmail.com --- Changes in v4: - Fix checkpatch warning whitespace before semicolon
Changes in v3: None Changes in v2: - Fix checkpatch issues. - Does't change funtion sdh_setup_data() to return void.
arch/blackfin/include/asm/mach-common/bits/sdh.h | 38 +++++++++++- drivers/mmc/bfin_sdh.c | 68 ++++++++++++++++----- 2 files changed, 88 insertions(+), 18 deletions(-)
diff --git a/arch/blackfin/include/asm/mach-common/bits/sdh.h b/arch/blackfin/include/asm/mach-common/bits/sdh.h index 8c5dd33..1c60d4b 100644 --- a/arch/blackfin/include/asm/mach-common/bits/sdh.h +++ b/arch/blackfin/include/asm/mach-common/bits/sdh.h @@ -12,18 +12,35 @@ #define CMD_INT_E 0x100 /* Command Interrupt */ #define CMD_PEND_E 0x200 /* Command Pending */ #define CMD_E 0x400 /* Command Enable */ +#ifdef RSI_BLKSZ +#define CMD_CRC_CHECK_D 0x800 /* CRC Check is disabled */ +#define CMD_DATA0_BUSY 0x1000 /* Check Busy State on DATA0 */ +#endif
/* Bit masks for SDH_PWR_CTL */ +#ifndef RSI_BLKSZ #define PWR_ON 0x3 /* Power On */ #define SD_CMD_OD 0x40 /* Open Drain Output */ #define ROD_CTL 0x80 /* Rod Control */ +#endif
/* Bit masks for SDH_CLK_CTL */ #define CLKDIV 0xff /* MC_CLK Divisor */ #define CLK_E 0x100 /* MC_CLK Bus Clock Enable */ #define PWR_SV_E 0x200 /* Power Save Enable */ #define CLKDIV_BYPASS 0x400 /* Bypass Divisor */ -#define WIDE_BUS 0x800 /* Wide Bus Mode Enable */ +#define BUS_MODE_MASK 0x1800 /* Bus Mode Mask */ +#define STD_BUS_1 0x000 /* Standard Bus 1 bit mode */ +#define WIDE_BUS_4 0x800 /* Wide Bus 4 bit mode */ +#define BYTE_BUS_8 0x1000 /* Byte Bus 8 bit mode */ +#ifdef RSI_BLKSZ +#define CARD_TYPE_MASK 0xe000 /* Card type mask */ +#define CARD_TYPE_OFFSET 13 /* Card type offset */ +#define CARD_TYPE_SDIO 0 +#define CARD_TYPE_eMMC 1 +#define CARD_TYPE_SD 2 +#define CARD_TYPE_CEATA 3 +#endif
/* Bit masks for SDH_RESP_CMD */ #define RESP_CMD 0x3f /* Response Command */ @@ -33,7 +50,13 @@ #define DTX_DIR 0x2 /* Data Transfer Direction */ #define DTX_MODE 0x4 /* Data Transfer Mode */ #define DTX_DMA_E 0x8 /* Data Transfer DMA Enable */ +#ifndef RSI_BLKSZ #define DTX_BLK_LGTH 0xf0 /* Data Transfer Block Length */ +#else + +/* Bit masks for SDH_BLK_SIZE */ +#define DTX_BLK_LGTH 0x1fff /* Data Transfer Block Length */ +#endif
/* Bit masks for SDH_STATUS */ #define CMD_CRC_FAIL 0x1 /* CMD CRC Fail */ @@ -102,10 +125,13 @@ /* Bit masks for SDH_E_STATUS */ #define SDIO_INT_DET 0x2 /* SDIO Int Detected */ #define SD_CARD_DET 0x10 /* SD Card Detect */ +#define SD_CARD_BUSYMODE 0x80000000 /* Card is in Busy mode */ +#define SD_CARD_SLPMODE 0x40000000 /* Card in Sleep Mode */ +#define SD_CARD_READY 0x00020000 /* Card Ready */
/* Bit masks for SDH_E_MASK */ #define SDIO_MSK 0x2 /* Mask SDIO Int Detected */ -#define SCD_MSK 0x40 /* Mask Card Detect */ +#define SCD_MSK 0x10 /* Mask Card Detect */
/* Bit masks for SDH_CFG */ #define CLKS_EN 0x1 /* Clocks Enable */ @@ -114,7 +140,15 @@ #define SD_RST 0x10 /* SDMMC Reset */ #define PUP_SDDAT 0x20 /* Pull-up SD_DAT */ #define PUP_SDDAT3 0x40 /* Pull-up SD_DAT3 */ +#ifndef RSI_BLKSZ #define PD_SDDAT3 0x80 /* Pull-down SD_DAT3 */ +#else +#define PWR_ON 0x600 /* Power On */ +#define SD_CMD_OD 0x800 /* Open Drain Output */ +#define BOOT_EN 0x1000 /* Boot Enable */ +#define BOOT_MODE 0x2000 /* Alternate Boot Mode */ +#define BOOT_ACK_EN 0x4000 /* Boot ACK is expected */ +#endif
/* Bit masks for SDH_RD_WAIT_EN */ #define RWR 0x1 /* Read Wait Request */ 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; }