diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/bfin_sdh.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/mmc/bfin_sdh.c b/drivers/mmc/bfin_sdh.c index 4a77779..27d9bf6 100644 --- a/drivers/mmc/bfin_sdh.c +++ b/drivers/mmc/bfin_sdh.c @@ -58,27 +58,29 @@ static int sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd) { - unsigned int sdh_cmd; - unsigned int status; + unsigned int status, timeout; int cmd = mmc_cmd->cmdidx; int flags = mmc_cmd->resp_type; int arg = mmc_cmd->cmdarg; - int ret = 0; - sdh_cmd = 0; - - sdh_cmd |= cmd; + int ret; + u16 sdh_cmd; + sdh_cmd = cmd | CMD_E; if (flags & MMC_RSP_PRESENT) sdh_cmd |= CMD_RSP; - if (flags & MMC_RSP_136) sdh_cmd |= CMD_L_RSP; bfin_write_SDH_ARGUMENT(arg); - bfin_write_SDH_COMMAND(sdh_cmd | CMD_E); + bfin_write_SDH_COMMAND(sdh_cmd); /* wait for a while */ + timeout = 0; do { + if (++timeout > 1000000) { + status = CMD_TIME_OUT; + break; + } udelay(1); status = bfin_read_SDH_STATUS(); } while (!(status & (CMD_SENT | CMD_RESP_END | CMD_TIME_OUT | @@ -94,12 +96,15 @@ sdh_send_cmd(struct mmc *mmc, struct mmc_cmd *mmc_cmd) } if (status & CMD_TIME_OUT) - ret |= TIMEOUT; + ret = TIMEOUT; else if (status & CMD_CRC_FAIL && flags & MMC_RSP_CRC) - ret |= COMM_ERR; + ret = COMM_ERR; + else + ret = 0; bfin_write_SDH_STATUS_CLR(CMD_SENT_STAT | CMD_RESP_END_STAT | CMD_TIMEOUT_STAT | CMD_CRC_FAIL_STAT); + return ret; } |