omap_hsmmc: introduce omap_hsmmc_data struct

Currently there's no appropriate place to store driver specific data
because the pointer that is meant for that (priv) is being used to
store the base address of mmc registers.

Introduce a new struct for storing driver specific data.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>

drivers/mmc/omap_hsmmc.c

@@ -38,6 +38,10 @@
 #define SYSCTL_SRC	(1 << 25)
 #define SYSCTL_SRD	(1 << 26)
 
+struct omap_hsmmc_data {
+	struct hsmmc *base_addr;
+};
+
 /* If we fail after 1 second wait, something is really bad */
 #define MAX_RETRY_MS	1000
 
@@ -45,6 +49,7 @@ static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
 			unsigned int siz);
 static struct mmc hsmmc_dev[3];
+static struct omap_hsmmc_data hsmmc_dev_data[3];
 
 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
 static void omap4_vmmc_pbias_config(struct mmc *mmc)
@@ -177,11 +182,12 @@ void mmc_init_stream(struct hsmmc *mmc_base)
 
 static int mmc_init_setup(struct mmc *mmc)
 {
-	struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
+	struct hsmmc *mmc_base;
 	unsigned int reg_val;
 	unsigned int dsor;
 	ulong start;
 
+	mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
 	mmc_board_init(mmc);
 
 	writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
@@ -262,10 +268,11 @@ static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
 static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 			struct mmc_data *data)
 {
-	struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
+	struct hsmmc *mmc_base;
 	unsigned int flags, mmc_stat;
 	ulong start;
 
+	mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
 	start = get_timer(0);
 	while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
 		if (get_timer(0) - start > MAX_RETRY_MS) {
@@ -489,10 +496,11 @@ static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
 
 static void mmc_set_ios(struct mmc *mmc)
 {
-	struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
+	struct hsmmc *mmc_base;
 	unsigned int dsor = 0;
 	ulong start;
 
+	mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
 	/* configue bus width */
 	switch (mmc->bus_width) {
 	case 8:
@@ -542,32 +550,32 @@ static void mmc_set_ios(struct mmc *mmc)
 
 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max)
 {
-	struct mmc *mmc;
-
-	mmc = &hsmmc_dev[dev_index];
+	struct mmc *mmc = &hsmmc_dev[dev_index];
+	struct omap_hsmmc_data *priv_data = &hsmmc_dev_data[dev_index];
 
 	sprintf(mmc->name, "OMAP SD/MMC");
 	mmc->send_cmd = mmc_send_cmd;
 	mmc->set_ios = mmc_set_ios;
 	mmc->init = mmc_init_setup;
 	mmc->getcd = NULL;
+	mmc->priv = priv_data;
 
 	switch (dev_index) {
 	case 0:
-		mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE;
+		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
 		break;
 #ifdef OMAP_HSMMC2_BASE
 	case 1:
-		mmc->priv = (struct hsmmc *)OMAP_HSMMC2_BASE;
+		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
 		break;
 #endif
 #ifdef OMAP_HSMMC3_BASE
 	case 2:
-		mmc->priv = (struct hsmmc *)OMAP_HSMMC3_BASE;
+		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
 		break;
 #endif
 	default:
-		mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE;
+		priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
 		return 1;
 	}
 	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;