diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-04-02 22:02:55 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-02 22:03:08 +0400 |
| commit | c9494727cf293ae2ec66af57547a3e79c724fec2 (patch) | |
| tree | 44ae197b64fa7530ee695a90ad31326dda06f1e1 /drivers/mmc/core/sdio_ops.c | |
| parent | 6427462bfa50f50dc6c088c07037264fcc73eca1 (diff) | |
| parent | 42be79e37e264557f12860fa4cc84b4de3685954 (diff) | |
| download | linux-c9494727cf293ae2ec66af57547a3e79c724fec2.tar.xz | |
Merge branch 'linus' into sched/core
Merge reason: update to latest upstream
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/mmc/core/sdio_ops.c')
| -rw-r--r-- | drivers/mmc/core/sdio_ops.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/drivers/mmc/core/sdio_ops.c b/drivers/mmc/core/sdio_ops.c index 4eb7825fd1a7..dea36d9c22e6 100644 --- a/drivers/mmc/core/sdio_ops.c +++ b/drivers/mmc/core/sdio_ops.c @@ -67,13 +67,13 @@ int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) return err; } -int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, - unsigned addr, u8 in, u8* out) +static int mmc_io_rw_direct_host(struct mmc_host *host, int write, unsigned fn, + unsigned addr, u8 in, u8 *out) { struct mmc_command cmd; int err; - BUG_ON(!card); + BUG_ON(!host); BUG_ON(fn > 7); /* sanity check */ @@ -90,11 +90,11 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, cmd.arg |= in; cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC; - err = mmc_wait_for_cmd(card->host, &cmd, 0); + err = mmc_wait_for_cmd(host, &cmd, 0); if (err) return err; - if (mmc_host_is_spi(card->host)) { + if (mmc_host_is_spi(host)) { /* host driver already reported errors */ } else { if (cmd.resp[0] & R5_ERROR) @@ -106,7 +106,7 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, } if (out) { - if (mmc_host_is_spi(card->host)) + if (mmc_host_is_spi(host)) *out = (cmd.resp[0] >> 8) & 0xFF; else *out = cmd.resp[0] & 0xFF; @@ -115,6 +115,13 @@ int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, return 0; } +int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, + unsigned addr, u8 in, u8 *out) +{ + BUG_ON(!card); + return mmc_io_rw_direct_host(card->host, write, fn, addr, in, out); +} + int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz) { @@ -182,3 +189,20 @@ int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, return 0; } +int sdio_reset(struct mmc_host *host) +{ + int ret; + u8 abort; + + /* SDIO Simplified Specification V2.0, 4.4 Reset for SDIO */ + + ret = mmc_io_rw_direct_host(host, 0, 0, SDIO_CCCR_ABORT, 0, &abort); + if (ret) + abort = 0x08; + else + abort |= 0x08; + + ret = mmc_io_rw_direct_host(host, 1, 0, SDIO_CCCR_ABORT, abort, NULL); + return ret; +} + |