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| author | Thomas Chou <thomas@wytron.com.tw> | 2011-04-19 03:48:32 +0000 |
|---|---|---|
| committer | Andy Fleming <afleming@freescale.com> | 2011-05-18 14:30:34 -0500 |
| commit | ed018b21d61614e0431f6bf514bec6e4bf64fe31 (patch) | |
| tree | 846bc03655befabcbc79c0b95baf2d205c6d5ad1 | |
| parent | 0ea91423f47461bf7eaed2d4aff198076dd07fd5 (diff) | |
| download | u-boot-imx-ed018b21d61614e0431f6bf514bec6e4bf64fe31.zip u-boot-imx-ed018b21d61614e0431f6bf514bec6e4bf64fe31.tar.gz u-boot-imx-ed018b21d61614e0431f6bf514bec6e4bf64fe31.tar.bz2 | |
mmc_spi: generate response for send status command
A "send status" command is added with the commit "mmc: checking
status after commands with R1b response". But the status register
returned from send status command of SPI protocol is different from
that of MMC/SD protocol. We do a simple test and generate a response
in stead of full bit-by-bit translation.
Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
| -rw-r--r-- | drivers/mmc/mmc_spi.c | 5 | ||||
| -rw-r--r-- | include/mmc.h | 1 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mmc/mmc_spi.c b/drivers/mmc/mmc_spi.c index dc7574c..49fb9e0 100644 --- a/drivers/mmc/mmc_spi.c +++ b/drivers/mmc/mmc_spi.c @@ -208,6 +208,11 @@ static int mmc_spi_request(struct mmc *mmc, struct mmc_cmd *cmd, cmd->response[0] = swab32(cmd->response[0]); debug("r32 %x\n", cmd->response[0]); break; + case MMC_CMD_SEND_STATUS: + spi_xfer(spi, 1 * 8, NULL, cmd->response, 0); + cmd->response[0] = (cmd->response[0] & 0xff) ? + MMC_STATUS_ERROR : MMC_STATUS_RDY_FOR_DATA; + break; } } else { debug("%s:data %x %x %x\n", __func__, diff --git a/include/mmc.h b/include/mmc.h index f7f2286..863b7e2 100644 --- a/include/mmc.h +++ b/include/mmc.h @@ -102,6 +102,7 @@ #define MMC_STATUS_MASK (~0x0206BF7F) #define MMC_STATUS_RDY_FOR_DATA (1 << 8) #define MMC_STATUS_CURR_STATE (0xf << 9) +#define MMC_STATUS_ERROR (1 << 19) #define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */ #define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */ |