diff options
| author | Roger Tseng <rogerable@realtek.com> | 2013-02-04 15:45:58 +0800 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2013-02-14 00:22:59 +0100 |
| commit | 88a7ee37f3c5c73b000f7ba2000b27c5002a5286 (patch) | |
| tree | cf73579f1eb6597ca8df1edc93597a7b0023869e /drivers/mfd/rtl8411.c | |
| parent | 8ea402f5646e6e36c8cd0a62053ba8939204dceb (diff) | |
| download | linux-88a7ee37f3c5c73b000f7ba2000b27c5002a5286.tar.gz linux-88a7ee37f3c5c73b000f7ba2000b27c5002a5286.tar.bz2 linux-88a7ee37f3c5c73b000f7ba2000b27c5002a5286.zip | |
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/rtl8411.c')
| -rw-r--r-- | drivers/mfd/rtl8411.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/mfd/rtl8411.c b/drivers/mfd/rtl8411.c index 3d3b4addf81a..2a2d31687b72 100644 --- a/drivers/mfd/rtl8411.c +++ b/drivers/mfd/rtl8411.c @@ -115,14 +115,24 @@ static int rtl8411_card_power_off(struct rtsx_pcr *pcr, int card) static int rtl8411_switch_output_voltage(struct rtsx_pcr *pcr, u8 voltage) { u8 mask, val; + int err; mask = (BPP_REG_TUNED18 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_MASK; - if (voltage == OUTPUT_3V3) + if (voltage == OUTPUT_3V3) { + err = rtsx_pci_write_register(pcr, + SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_D); + if (err < 0) + return err; val = (BPP_ASIC_3V3 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_3V3; - else if (voltage == OUTPUT_1V8) + } else if (voltage == OUTPUT_1V8) { + err = rtsx_pci_write_register(pcr, + SD30_DRIVE_SEL, 0x07, DRIVER_TYPE_B); + if (err < 0) + return err; val = (BPP_ASIC_1V8 << BPP_TUNED18_SHIFT_8411) | BPP_PAD_1V8; - else + } else { return -EINVAL; + } return rtsx_pci_write_register(pcr, LDO_CTL, mask, val); } |