diff options
Diffstat (limited to 'drivers/pinctrl/rockchip/pinctrl-rv1108.c')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl-rv1108.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl-rv1108.c b/drivers/pinctrl/rockchip/pinctrl-rv1108.c index c28b504634..1a150ff0f1 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rv1108.c +++ b/drivers/pinctrl/rockchip/pinctrl-rv1108.c @@ -155,6 +155,30 @@ static void rv1108_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit *= ROCKCHIP_DRV_BITS_PER_PIN; } +static int rv1108_set_drive(struct rockchip_pin_bank *bank, + int pin_num, int strength) +{ + struct regmap *regmap; + int reg, ret; + u32 data; + u8 bit; + int type = bank->drv[pin_num / 8].drv_type; + + rv1108_calc_drv_reg_and_bit(bank, pin_num, ®map, ®, &bit); + ret = rockchip_translate_drive_value(type, strength); + if (ret < 0) { + debug("unsupported driver strength %d\n", strength); + return ret; + } + + /* enable the write to the equivalent lower bits */ + data = ((1 << ROCKCHIP_DRV_BITS_PER_PIN) - 1) << (bit + 16); + + data |= (ret << bit); + ret = regmap_write(regmap, reg, data); + return ret; +} + #define RV1108_SCHMITT_PMU_OFFSET 0x30 #define RV1108_SCHMITT_GRF_OFFSET 0x388 #define RV1108_SCHMITT_BANK_STRIDE 8 @@ -206,7 +230,7 @@ static struct rockchip_pin_ctrl rv1108_pin_ctrl = { .niomux_recalced = ARRAY_SIZE(rv1108_mux_recalced_data), .set_mux = rv1108_set_mux, .pull_calc_reg = rv1108_calc_pull_reg_and_bit, - .drv_calc_reg = rv1108_calc_drv_reg_and_bit, + .set_drive = rv1108_set_drive, .schmitt_calc_reg = rv1108_calc_schmitt_reg_and_bit, }; |