mmc: sdhci-esdhc-imx: Convert to pinctrl_select_default_state()

Let's drop the boilerplate code for managing the default pinctrl state and
convert into using the new pinctrl_select_default_state().

Cc: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20191206170821.29711-7-ulf.hansson@linaro.org

drivers/mmc/host/sdhci-esdhc-imx.c

@@ -224,7 +224,6 @@ static struct esdhc_soc_data usdhc_imx8qxp_data = {
 struct pltfm_imx_data {
 	u32 scratchpad;
 	struct pinctrl *pinctrl;
-	struct pinctrl_state *pins_default;
 	struct pinctrl_state *pins_100mhz;
 	struct pinctrl_state *pins_200mhz;
 	const struct esdhc_soc_data *socdata;
@@ -951,7 +950,6 @@ static int esdhc_change_pinstate(struct sdhci_host *host,
 	dev_dbg(mmc_dev(host->mmc), "change pinctrl state for uhs %d\n", uhs);
 
 	if (IS_ERR(imx_data->pinctrl) ||
-		IS_ERR(imx_data->pins_default) ||
 		IS_ERR(imx_data->pins_100mhz) ||
 		IS_ERR(imx_data->pins_200mhz))
 		return -EINVAL;
@@ -968,7 +966,7 @@ static int esdhc_change_pinstate(struct sdhci_host *host,
 		break;
 	default:
 		/* back to default state for other legacy timing */
-		pinctrl = imx_data->pins_default;
+		return pinctrl_select_default_state(mmc_dev(host->mmc));
 	}
 
 	return pinctrl_select_state(imx_data->pinctrl, pinctrl);
@@ -1338,7 +1336,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
 
 	mmc_of_parse_voltage(np, &host->ocr_mask);
 
-	if (esdhc_is_usdhc(imx_data) && !IS_ERR(imx_data->pins_default)) {
+	if (esdhc_is_usdhc(imx_data)) {
 		imx_data->pins_100mhz = pinctrl_lookup_state(imx_data->pinctrl,
 						ESDHC_PINCTRL_STATE_100MHZ);
 		imx_data->pins_200mhz = pinctrl_lookup_state(imx_data->pinctrl,
@@ -1492,11 +1490,6 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 		goto disable_ahb_clk;
 	}
 
-	imx_data->pins_default = pinctrl_lookup_state(imx_data->pinctrl,
-						PINCTRL_STATE_DEFAULT);
-	if (IS_ERR(imx_data->pins_default))
-		dev_warn(mmc_dev(host->mmc), "could not get default state\n");
-
 	if (esdhc_is_usdhc(imx_data)) {
 		host->quirks2 |= SDHCI_QUIRK2_PRESET_VALUE_BROKEN;
 		host->mmc->caps |= MMC_CAP_1_8V_DDR | MMC_CAP_3_3V_DDR;