mmc: exynos_dw_mmc: clean the unused and unnecessary codes

Clean the unused and unnecessary codse.
This patch is one of them for preparing to use DM.
Because it's easy to maintain and combine DM after cleaning codes.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

drivers/mmc/exynos_dw_mmc.c

@@ -80,11 +80,10 @@ static void exynos_dwmci_board_init(struct dwmci_host *host)
 		exynos_dwmci_clksel(host);
 }
 
-static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
+static int exynos_dwmci_core_init(struct dwmci_host *host)
 {
 	unsigned int div;
 	unsigned long freq, sclk;
-	struct dwmci_exynos_priv_data *priv = host->priv;
 
 	if (host->bus_hz)
 		freq = host->bus_hz;
@@ -92,10 +91,10 @@ static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
 		freq = DWMMC_MAX_FREQ;
 
 	/* request mmc clock vlaue of 52MHz.  */
-	sclk = get_mmc_clk(index);
+	sclk = get_mmc_clk(host->dev_index);
 	div = DIV_ROUND_UP(sclk, freq);
 	/* set the clock divisor for mmc */
-	set_mmc_clk(index, div);
+	set_mmc_clk(host->dev_index, div);
 
 	host->name = "EXYNOS DWMMC";
 #ifdef CONFIG_EXYNOS5420
@@ -103,20 +102,12 @@ static int exynos_dwmci_core_init(struct dwmci_host *host, int index)
 #endif
 	host->board_init = exynos_dwmci_board_init;
 
-	if (!priv->sdr_timing) {
-		if (index == 0)
-			priv->sdr_timing = DWMMC_MMC0_SDR_TIMING_VAL;
-		else if (index == 2)
-			priv->sdr_timing = DWMMC_MMC2_SDR_TIMING_VAL;
-	}
-
 	host->caps = MMC_MODE_DDR_52MHz;
 	host->clksel = exynos_dwmci_clksel;
-	host->dev_index = index;
 	host->get_mmc_clk = exynos_dwmci_get_clk;
 	/* Add the mmc channel to be registered with mmc core */
 	if (add_dwmci(host, DWMMC_MAX_FREQ, DWMMC_MIN_FREQ)) {
-		printf("DWMMC%d registration failed\n", index);
+		printf("DWMMC%d registration failed\n", host->dev_index);
 		return -1;
 	}
 	return 0;
@@ -126,18 +117,16 @@ static struct dwmci_host dwmci_host[DWMMC_MAX_CH_NUM];
 
 static int do_dwmci_init(struct dwmci_host *host)
 {
-	int index, flag, err;
-
-	index = host->dev_index;
+	int flag, err;
 
 	flag = host->buswidth == 8 ? PINMUX_FLAG_8BIT_MODE : PINMUX_FLAG_NONE;
 	err = exynos_pinmux_config(host->dev_id, flag);
 	if (err) {
-		printf("DWMMC%d not configure\n", index);
+		printf("DWMMC%d not configure\n", host->dev_index);
 		return err;
 	}
 
-	return exynos_dwmci_core_init(host, index);
+	return exynos_dwmci_core_init(host);
 }
 
 static int exynos_dwmci_get_config(const void *blob, int node,
@@ -233,15 +222,13 @@ static int exynos_dwmci_process_node(const void *blob,
 
 int exynos_dwmmc_init(const void *blob)
 {
-	int compat_id;
 	int node_list[DWMMC_MAX_CH_NUM];
 	int boot_dev_node;
 	int err = 0, count;
 
-	compat_id = COMPAT_SAMSUNG_EXYNOS_DWMMC;
-
 	count = fdtdec_find_aliases_for_id(blob, "mmc",
-				compat_id, node_list, DWMMC_MAX_CH_NUM);
+			COMPAT_SAMSUNG_EXYNOS_DWMMC, node_list,
+			DWMMC_MAX_CH_NUM);
 
 	/* For DWMMC always set boot device as mmc 0 */
 	if (count >= 3 && get_boot_mode() == BOOT_MODE_SD) {