Merge tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc

Pull MMC updates from Chris Ball:
 "Core:
   - Add DT properties for card detection (broken-cd, cd-gpios,
     non-removable)
   - Don't poll non-removable devices
   - Fixup/rework eMMC sleep mode/"power off notify" feature
   - Support eMMC background operations (BKOPS).  To set the one-time
     programmable fuse that enables bkops on an eMMC that doesn't
     already have it set, you can use the "mmc bkops enable" command in:

       git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git

  Drivers:
   - atmel-mci, dw_mmc, pxa-mci, dove, s3c, spear: Add device tree
     support
   - bfin_sdh: Add support for the controller in bf60x
   - dw_mmc: Support Samsung Exynos SoCs
   - eSDHC: Add ADMA support
   - sdhci: Support testing a cd-gpio (from slot-gpio) instead of
     presence bit
   - sdhci-pltfm: Support broken-cd DT property
   - tegra: Convert to only supporting DT (mach-tegra has gone DT-only)"

* tag 'mmc-merge-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (67 commits)
  mmc: core: Fixup broken suspend and eMMC4.5 power off notify
  mmc: sdhci-spear: Add clk_{un}prepare() support
  mmc: sdhci-spear: add device tree bindings
  mmc: sdhci-s3c: Add clk_(enable/disable) in runtime suspend/resume
  mmc: core: Replace MMC_CAP2_BROKEN_VOLTAGE with test for fixed regulator
  mmc: sdhci-pxav3: Use sdhci_get_of_property for parsing DT quirks
  mmc: dt: Support "broken-cd" property in sdhci-pltfm
  mmc: sdhci-s3c: fix the wrong number of max bus clocks
  mmc: sh-mmcif: avoid oops on spurious interrupts
  mmc: sh-mmcif: properly handle MMC_WRITE_MULTIPLE_BLOCK completion IRQ
  mmc: sdhci-s3c: Fix crash on module insertion for second time
  mmc: sdhci-s3c: Enable only required bus clock
  mmc: Revert "mmc: dw_mmc: Add check for IDMAC configuration"
  mmc: mxcmmc: fix bug that may block a data transfer forever
  mmc: omap_hsmmc: Pass on the suspend failure to the PM core
  mmc: atmel-mci: AP700x PDC is not connected to MCI
  mmc: atmel-mci: DMA can be used with other controllers
  mmc: mmci: use clk_prepare_enable and clk_disable_unprepare
  mmc: sdhci-s3c: Add device tree support
  mmc: dw_mmc: add support for exynos specific implementation of dw-mshc
  ...

1 files changed, 33 insertions, 3 deletions

diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index f8eb1fb0c921..ae5fcbfa1eef 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -21,6 +21,32 @@
 #include "sdhci-pltfm.h"
 #include "sdhci-esdhc.h"
 
+#define VENDOR_V_22	0x12
+static u32 esdhc_readl(struct sdhci_host *host, int reg)
+{
+	u32 ret;
+
+	ret = in_be32(host->ioaddr + reg);
+	/*
+	 * The bit of ADMA flag in eSDHC is not compatible with standard
+	 * SDHC register, so set fake flag SDHCI_CAN_DO_ADMA2 when ADMA is
+	 * supported by eSDHC.
+	 * And for many FSL eSDHC controller, the reset value of field
+	 * SDHCI_CAN_DO_ADMA1 is one, but some of them can't support ADMA,
+	 * only these vendor version is greater than 2.2/0x12 support ADMA.
+	 * For FSL eSDHC, must aligned 4-byte, so use 0xFC to read the
+	 * the verdor version number, oxFE is SDHCI_HOST_VERSION.
+	 */
+	if ((reg == SDHCI_CAPABILITIES) && (ret & SDHCI_CAN_DO_ADMA1)) {
+		u32 tmp = in_be32(host->ioaddr + SDHCI_SLOT_INT_STATUS);
+		tmp = (tmp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
+		if (tmp > VENDOR_V_22)
+			ret |= SDHCI_CAN_DO_ADMA2;
+	}
+
+	return ret;
+}
+
 static u16 esdhc_readw(struct sdhci_host *host, int reg)
 {
 	u16 ret;
@@ -144,7 +170,7 @@ static void esdhc_of_resume(struct sdhci_host *host)
 #endif
 
 static struct sdhci_ops sdhci_esdhc_ops = {
-	.read_l = sdhci_be32bs_readl,
+	.read_l = esdhc_readl,
 	.read_w = esdhc_readw,
 	.read_b = esdhc_readb,
 	.write_l = sdhci_be32bs_writel,
@@ -161,9 +187,13 @@ static struct sdhci_ops sdhci_esdhc_ops = {
 };
 
 static struct sdhci_pltfm_data sdhci_esdhc_pdata = {
-	/* card detection could be handled via GPIO */
+	/*
+	 * card detection could be handled via GPIO
+	 * eSDHC cannot support End Attribute in NOP ADMA descriptor
+	 */
 	.quirks = ESDHC_DEFAULT_QUIRKS | SDHCI_QUIRK_BROKEN_CARD_DETECTION
-		| SDHCI_QUIRK_NO_CARD_NO_RESET,
+		| SDHCI_QUIRK_NO_CARD_NO_RESET
+		| SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
 	.ops = &sdhci_esdhc_ops,
 };