mmc: rtsx: Call MFD hook to switch output voltage

Different card reader has different method to switch output voltage, so
we have to use the callback function provided by MFD driver to switch
output pad voltage.
Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mmc/host/rtsx_pci_sdmmc.c

@@ -1060,26 +1060,6 @@ static int sd_wait_voltage_stable_2(struct realtek_pci_sdmmc *host)
 	return 0;
 }
 
-static int sd_change_bank_voltage(struct realtek_pci_sdmmc *host, u8 voltage)
-{
-	struct rtsx_pcr *pcr = host->pcr;
-	int err;
-
-	if (voltage == SD_IO_3V3) {
-		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
-		if (err < 0)
-			return err;
-	} else if (voltage == SD_IO_1V8) {
-		err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24);
-		if (err < 0)
-			return err;
-	} else {
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct realtek_pci_sdmmc *host = mmc_priv(mmc);
@@ -1098,11 +1078,11 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
 	rtsx_pci_start_run(pcr);
 
 	if (ios->signal_voltage == MMC_SIGNAL_VOLTAGE_330)
-		voltage = SD_IO_3V3;
+		voltage = OUTPUT_3V3;
 	else
-		voltage = SD_IO_1V8;
+		voltage = OUTPUT_1V8;
 
-	if (voltage == SD_IO_1V8) {
+	if (voltage == OUTPUT_1V8) {
 		err = rtsx_pci_write_register(pcr,
 				SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B);
 		if (err < 0)
@@ -1113,11 +1093,11 @@ static int sdmmc_switch_voltage(struct mmc_host *mmc, struct mmc_ios *ios)
 			goto out;
 	}
 
-	err = sd_change_bank_voltage(host, voltage);
+	err = rtsx_pci_switch_output_voltage(pcr, voltage);
 	if (err < 0)
 		goto out;
 
-	if (voltage == SD_IO_1V8) {
+	if (voltage == OUTPUT_1V8) {
 		err = sd_wait_voltage_stable_2(host);
 		if (err < 0)
 			goto out;