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authorRoger Tseng <rogerable@realtek.com>2013-02-04 15:45:58 +0800
committerSamuel Ortiz <sameo@linux.intel.com>2013-02-14 00:22:59 +0100
commit88a7ee37f3c5c73b000f7ba2000b27c5002a5286 (patch)
treecf73579f1eb6597ca8df1edc93597a7b0023869e /drivers/mfd/rts5209.c
parent8ea402f5646e6e36c8cd0a62053ba8939204dceb (diff)
downloadlinux-88a7ee37f3c5c73b000f7ba2000b27c5002a5286.tar.bz2
mfd: rtsx: Implement driving adjustment to device-dependent callbacks
Implement different ways of selecting driving capability(a necessary adjustment along with voltage change). It was origionally in device-independent mmc/host/rtsx_pci_sdmmc.c. Moving it here to support devices which may have a different way of adjustment. Signed-off-by: Roger Tseng <rogerable@realtek.com> Reviewed-by: Wei WANG <wei_wang@realsil.com.cn> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/rts5209.c')
-rw-r--r--drivers/mfd/rts5209.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mfd/rts5209.c b/drivers/mfd/rts5209.c
index 98fe0f39463e..ec78d9fb0879 100644
--- a/drivers/mfd/rts5209.c
+++ b/drivers/mfd/rts5209.c
@@ -149,10 +149,18 @@ static int rts5209_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage)
int err;
if (voltage == OUTPUT_3V3) {
+ err = rtsx_pci_write_register(pcr,
+ SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D);
+ if (err < 0)
+ return err;
err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4FC0 | 0x24);
if (err < 0)
return err;
} else if (voltage == OUTPUT_1V8) {
+ err = rtsx_pci_write_register(pcr,
+ SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B);
+ if (err < 0)
+ return err;
err = rtsx_pci_write_phy_register(pcr, 0x08, 0x4C40 | 0x24);
if (err < 0)
return err;