diff options
| author | Wu, Josh <Josh.wu@atmel.com> | 2012-09-13 22:22:04 +0000 |
|---|---|---|
| committer | Andreas Bießmann <andreas.devel@googlemail.com> | 2012-10-17 11:28:54 +0200 |
| commit | 1db7377a70a8d931c32648e717695133120d5456 (patch) | |
| tree | d461e7e61b82bbe6af64e94d63a2465993d091c7 | |
| parent | b9f4bc34ac0ee40f8d6a952036b4cd62b854aa74 (diff) | |
| download | u-boot-imx-1db7377a70a8d931c32648e717695133120d5456.zip u-boot-imx-1db7377a70a8d931c32648e717695133120d5456.tar.gz u-boot-imx-1db7377a70a8d931c32648e717695133120d5456.tar.bz2 | |
mmc: at91: add multi block read/write support.
Since the at91sam9263, the mmc hardware support multi blocks read/write. So this driver enable it.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
| -rw-r--r-- | drivers/mmc/gen_atmel_mci.c | 11 | ||||
| -rw-r--r-- | include/atmel_mci.h | 7 |
2 files changed, 17 insertions, 1 deletions
diff --git a/drivers/mmc/gen_atmel_mci.c b/drivers/mmc/gen_atmel_mci.c index 4968c5e..9f06304 100644 --- a/drivers/mmc/gen_atmel_mci.c +++ b/drivers/mmc/gen_atmel_mci.c @@ -87,6 +87,11 @@ static void mci_set_mode(struct mmc *mmc, u32 hz, u32 blklen) | MMCI_BF(BLKLEN, blklen) | MMCI_BIT(RDPROOF) | MMCI_BIT(WRPROOF)), &mci->mr); + /* + * On some new platforms BLKLEN in mci->mr is ignored. + * Should use the BLKLEN in the block register. + */ + writel(MMCI_BF(BLKLEN, blklen), &mci->blkr); initialized = 1; } @@ -183,6 +188,12 @@ 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); + /* For multi blocks read/write, set the block register */ + if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) + || (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) + writel(data->blocks | MMCI_BF(BLKLEN, mmc->read_bl_len), + &mci->blkr); + /* Send the command */ writel(cmd->cmdarg, &mci->argr); writel(cmdr, &mci->cmdr); diff --git a/include/atmel_mci.h b/include/atmel_mci.h index 3dd5d67..c711881 100644 --- a/include/atmel_mci.h +++ b/include/atmel_mci.h @@ -38,7 +38,7 @@ 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 */ @@ -118,6 +118,11 @@ typedef struct atmel_mci { #define MMCI_TRTYP_OFFSET 19 #define MMCI_TRTYP_SIZE 2 +/* Bitfields in BLKR */ +/* MMCI_BLKLEN_OFFSET/SIZE already defined in MR */ +#define MMCI_BCNT_OFFSET 0 +#define MMCI_BCNT_SIZE 16 + /* Bitfields in RSPRx */ #define MMCI_RSP_OFFSET 0 #define MMCI_RSP_SIZE 32 |