mmc: mxs: use mmc_of_parse to parse devicetree properties

Use generic helper function. This also adds support for the cd-gpios and
max-frequency devicetree properties.

Signed-off-by: Sascha Hauer <[e-mail]>
Signed-off-by: Chris Ball <[e-mail]>

drivers/mmc/host/mxs-mmc.c

···
 {
 	struct mxs_mmc_host *host = mmc_priv(mmc);
 	struct mxs_ssp *ssp = &host->ssp;
-	int present;
+	int present, ret;
+
+	ret = mmc_gpio_get_cd(mmc);
+	if (ret >= 0)
+		return ret;
 
 	present = !(readl(ssp->base + HW_SSP_STATUS(ssp)) &
 			BM_SSP_STATUS_CARD_DETECT);
···
 {
 	const struct of_device_id *of_id =
 			of_match_device(mxs_mmc_dt_ids, &pdev->dev);
-	struct device_node *np = pdev->dev.of_node;
 	struct mxs_mmc_host *host;
 	struct mmc_host *mmc;
 	struct resource *iores;
-	int ret = 0, irq_err, gpio;
+	int ret = 0, irq_err;
 	struct regulator *reg_vmmc;
-	enum of_gpio_flags flags;
 	struct mxs_ssp *ssp;
-	u32 bus_width = 0;
 
 	iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	irq_err = platform_get_irq(pdev, 0);
···
 	mmc->caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
 		    MMC_CAP_SDIO_IRQ | MMC_CAP_NEEDS_POLL;
 
-	of_property_read_u32(np, "bus-width", &bus_width);
-	if (bus_width == 4)
-		mmc->caps |= MMC_CAP_4_BIT_DATA;
-	else if (bus_width == 8)
-		mmc->caps |= MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA;
-	if (of_property_read_bool(np, "broken-cd"))
-		mmc->caps |= MMC_CAP_NEEDS_POLL;
-	if (of_property_read_bool(np, "non-removable"))
-		mmc->caps |= MMC_CAP_NONREMOVABLE;
-	gpio = of_get_named_gpio_flags(np, "wp-gpios", 0, &flags);
-	if (gpio_is_valid(gpio)) {
-		ret = mmc_gpio_request_ro(mmc, gpio);
-		if (ret)
-			goto out_clk_disable;
-		if (!(flags & OF_GPIO_ACTIVE_LOW))
-			mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
-	}
-
-	if (of_property_read_bool(np, "cd-inverted"))
-		mmc->caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
-
 	mmc->f_min = 400000;
 	mmc->f_max = 288000000;
+
+	ret = mmc_of_parse(mmc);
+	if (ret)
+		goto out_clk_disable;
+
 	mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
 
 	mmc->max_segs = 52;