According to datasheet,set block count before multiple read/write.
Signed-off-by: elen.song elen.song@atmel.com --- drivers/mmc/atmel_mci.h | 9 ++++++++- drivers/mmc/gen_atmel_mci.c | 4 ++++ 2 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/atmel_mci.h b/drivers/mmc/atmel_mci.h index 90ab6a8..3095d22 100644 --- a/drivers/mmc/atmel_mci.h +++ b/drivers/mmc/atmel_mci.h @@ -36,7 +36,7 @@ typedef struct atmel_mci { u32 sdcr; /* 0x0c */ u32 argr; /* 0x10 */ u32 cmdr; /* 0x14 */ - u32 _18; /* 0x18 */ + u32 blkr; /* 0x18 */ u32 _1c; /* 0x1c */ u32 rspr; /* 0x20 */ u32 rspr1; /* 0x24 */ @@ -67,6 +67,7 @@ typedef struct atmel_mci { #define MMCI_SDCR 0x000c #define MMCI_ARGR 0x0010 #define MMCI_CMDR 0x0014 +#define MMCI_BLKR 0x0018 #define MMCI_RSPR 0x0020 #define MMCI_RSPR1 0x0024 #define MMCI_RSPR2 0x0028 @@ -140,6 +141,12 @@ typedef struct atmel_mci { #define MMCI_TRTYP_OFFSET 19 #define MMCI_TRTYP_SIZE 2
+/* Bitfields in BLKR */ +#define MMCI_BCNT_OFFSET 0 +#define MMCI_BCNT_SIZE 16 +#define MMCI_BLKLEN_OFFSET 16 +#define MMCI_BLKLEN_SIZE 16 + /* Bitfields in RSPRx */ #define MMCI_RSP_OFFSET 0 #define MMCI_RSP_SIZE 32 diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index f346b24..d217574 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -183,6 +183,10 @@ mci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) /* Figure out the transfer arguments */ cmdr = mci_encode_cmd(cmd, data, &error_flags);
+ if (data) + writel(MMCI_BF(BCNT, data->blocks) | + MMCI_BF(BLKLEN, mmc->read_bl_len), &mci->blkr); + /* Send the command */ writel(cmd->cmdarg, &mci->argr); writel(cmdr, &mci->cmdr);