diff options
Diffstat (limited to 'firmware/target/arm/imx233')
| -rw-r--r-- | firmware/target/arm/imx233/sdmmc-imx233.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/firmware/target/arm/imx233/sdmmc-imx233.c b/firmware/target/arm/imx233/sdmmc-imx233.c index a435b149f2..b43d3b237b 100644 --- a/firmware/target/arm/imx233/sdmmc-imx233.c +++ b/firmware/target/arm/imx233/sdmmc-imx233.c @@ -530,6 +530,9 @@ static int init_mmc_drive(int drive) window_start[drive] = 0; window_end[drive] = *sec_count; } + /* deselect card */ + if(!send_cmd(drive, MMC_DESELECT_CARD, 0, MCI_NO_RESP, NULL)) + return -13; /* MMC always support CMD23 */ support_set_block_count[drive] = false; @@ -608,6 +611,18 @@ static int transfer_sectors(int drive, unsigned long start, int count, void *buf ret = -201; goto Lend; } + /* select card. + * NOTE: rely on SD_SELECT_CARD=MMC_SELECT_CARD */ + if(!send_cmd(drive, SD_SELECT_CARD, SDMMC_RCA(drive), MCI_NO_RESP, NULL)) + { + ret = -20; + goto Lend; + } + /* wait for TRAN state */ + /* NOTE: rely on SD_TRAN=MMC_TRAN */ + ret = wait_for_state(drive, SD_TRAN); + if(ret < 0) + goto Ldeselect; /** * NOTE: we need to make sure dma transfers are aligned. This is handled @@ -664,6 +679,12 @@ static int transfer_sectors(int drive, unsigned long start, int count, void *buf else ret = __xfer_sectors(drive, start, count, buf, read); } + /* deselect card */ + Ldeselect: + /* CMD7 w/rca =0 : deselects card & puts it in STBY state + * NOTE: rely on SD_DESELECT_CARD=MMC_DESELECT_CARD */ + if(!send_cmd(drive, SD_DESELECT_CARD, 0, MCI_NO_RESP, NULL)) + ret = -23; Lend: /* update led status */ led(false); |