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mmc: rtsx: Call MFD hook to switch output voltage

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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>
This commit is contained in:
Wei WANG 2013-01-23 09:51:05 +08:00 committed by Samuel Ortiz
parent d817ac4e18
commit ef85e736b1
1 changed files with 5 additions and 25 deletions
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30
drivers/mmc/host/rtsx_pci_sdmmc.c
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@ -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;