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>

diff --git a/drivers/mmc/host/sdhci-of-core.c b/drivers/mmc/host/sdhci-of-core.c
index a2e9820..dd1bdd1 100644 (file)
--- a/drivers/mmc/host/sdhci-of-core.c
+++ b/drivers/mmc/host/sdhci-of-core.c
@@ -154,6 +154,10 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
                host->ops = &sdhci_of_data->ops;
        }
 
+       if (of_get_property(np, "sdhci,auto-cmd12", NULL))
+               host->quirks |= SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12;
+
+
        if (of_get_property(np, "sdhci,1-bit-only", NULL))
                host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
 

diff --cc drivers/mmc/host/sdhci.c
Simple merge

diff --cc drivers/mmc/host/sdhci.h
Simple merge