mmc: sdhci-of-esdhc: support commands with busy response expecting TC

The IP versions older than 2.3 didn't support commands with busy
response which expect the TC bit set. But after the VVN2.3, eSDHC
IP has supported it.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 63d219f..cfabc43 100644 (file)
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -177,6 +177,9 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
        vvn = (vvn & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
        if (vvn == VENDOR_V_22)
                host->quirks2 |= SDHCI_QUIRK2_HOST_NO_CMD23;
+
+       if (vvn > VENDOR_V_22)
+               host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
 }
 
 static struct sdhci_ops sdhci_esdhc_ops = {