diff options
| author | Jerry Huang <Chang-Ming.Huang@freescale.com> | 2010-08-10 18:01:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-11 08:59:05 -0700 |
| commit | c4512f79dcb236c8dc2afae176a0dc520096f0bc (patch) | |
| tree | 4aced8cb26bae4256e538c6a35679d31c60d7dc2 /drivers/mmc/host/sdhci.c | |
| parent | 9bea3c850dbff2296892298614388bdc71ad2170 (diff) | |
| download | kernel_samsung_smdk4412-c4512f79dcb236c8dc2afae176a0dc520096f0bc.zip kernel_samsung_smdk4412-c4512f79dcb236c8dc2afae176a0dc520096f0bc.tar.gz kernel_samsung_smdk4412-c4512f79dcb236c8dc2afae176a0dc520096f0bc.tar.bz2 | |
sdhci: add auto CMD12 support for eSDHC driver
Add auto CMD12 command support for eSDHC driver. This is needed by P4080
and P1022 for block read/write. Manual asynchronous CMD12 abort operation
causes protocol violations on these silicons.
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c86c14a..7855121 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -818,8 +818,12 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host, WARN_ON(!host->data); mode = SDHCI_TRNS_BLK_CNT_EN; - if (data->blocks > 1) - mode |= SDHCI_TRNS_MULTI; + if (data->blocks > 1) { + if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) + mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_ACMD12; + else + mode |= SDHCI_TRNS_MULTI; + } if (data->flags & MMC_DATA_READ) mode |= SDHCI_TRNS_READ; if (host->flags & SDHCI_REQ_USE_DMA) @@ -1109,6 +1113,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq) #ifndef SDHCI_USE_LEDS_CLASS sdhci_activate_led(host); #endif + if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) { + if (mrq->stop) { + mrq->data->stop = NULL; + mrq->stop = NULL; + } + } host->mrq = mrq; |