[PATCH v4 5/8] MMC:rtsx: Using callback function to switch output voltage

[wei_wang]

From: Wei WANG <wei_w...@realsil.com.cn>

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_w...@realsil.com.cn>
---
 drivers/mmc/host/rtsx_pci_sdmmc.c |   30 +++++-------------------------
 1 file changed, 5 insertions(+), 25 deletions(-)

diff --git a/drivers/mmc/host/rtsx_pci_sdmmc.c 
b/drivers/mmc/host/rtsx_pci_sdmmc.c
index 571915d..f74b5ad 100644
--- a/drivers/mmc/host/rtsx_pci_sdmmc.c
+++ b/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;
-- 
1.7.9.5

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