mmc: add the quirk to use the sdhci for samsung-soc

To support the Samsung-SoC, added the basically functions.
Samsung-SoC didn't used the SDHCI_CTRL_HISPD.
And added set_control_reg callback for s3c64xx.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Lei Wen<leiwen@marvell.com>

drivers/mmc/sdhci.c

@@ -337,6 +337,9 @@ void sdhci_set_ios(struct mmc *mmc)
 	u32 ctrl;
 	struct sdhci_host *host = (struct sdhci_host *)mmc->priv;
 
+	if (host->set_control_reg)
+		host->set_control_reg(host);
+
 	if (mmc->clock != host->clock)
 		sdhci_set_clock(mmc, mmc->clock);
 
@@ -360,6 +363,9 @@ void sdhci_set_ios(struct mmc *mmc)
 	else
 		ctrl &= ~SDHCI_CTRL_HISPD;
 
+	if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)
+		ctrl &= ~SDHCI_CTRL_HISPD;
+
 	sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 }
 
@@ -443,9 +449,15 @@ int add_sdhci(struct sdhci_host *host, u32 max_clk, u32 min_clk)
 		mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
 	if (caps & SDHCI_CAN_VDD_180)
 		mmc->voltages |= MMC_VDD_165_195;
+
+	if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
+		mmc->voltages |= host->voltages;
+
 	mmc->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
 	if (caps & SDHCI_CAN_DO_8BIT)
 		mmc->host_caps |= MMC_MODE_8BIT;
+	if (host->host_caps)
+		mmc->host_caps |= host->host_caps;
 
 	sdhci_reset(host, SDHCI_RESET_ALL);
 	mmc_register(mmc);

include/sdhci.h

@@ -217,6 +217,8 @@
 #define SDHCI_QUIRK_32BIT_DMA_ADDR	(1 << 0)
 #define SDHCI_QUIRK_REG32_RW		(1 << 1)
 #define SDHCI_QUIRK_BROKEN_R1B		(1 << 2)
+#define SDHCI_QUIRK_NO_HISPD_BIT	(1 << 3)
+#define SDHCI_QUIRK_BROKEN_VOLTAGE	(1 << 4)
 
 /* to make gcc happy */
 struct sdhci_host;
@@ -241,10 +243,14 @@ struct sdhci_host {
 	char *name;
 	void *ioaddr;
 	unsigned int quirks;
+	unsigned int host_caps;
 	unsigned int version;
 	unsigned int clock;
 	struct mmc *mmc;
 	const struct sdhci_ops *ops;
+
+	void (*set_control_reg)(struct sdhci_host *host);
+	uint	voltages;
 };
 
 #ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS