diff options
Diffstat (limited to 'drivers/pinctrl/rockchip/pinctrl-rk3288.c')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl-rk3288.c | 35 |
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3288.c b/drivers/pinctrl/rockchip/pinctrl-rk3288.c index 5040cd8f48..6ae9f1c76e 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rk3288.c +++ b/drivers/pinctrl/rockchip/pinctrl-rk3288.c @@ -113,10 +113,6 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, if (bank->bank_num == 0) { *regmap = priv->regmap_pmu; *reg = RK3288_DRV_PMU_OFFSET; - - *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4); - *bit = pin_num % ROCKCHIP_DRV_PINS_PER_REG; - *bit *= ROCKCHIP_DRV_BITS_PER_PIN; } else { *regmap = priv->regmap_base; *reg = RK3288_DRV_GRF_OFFSET; @@ -124,11 +120,34 @@ static void rk3288_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, /* correct the offset, as we're starting with the 2nd bank */ *reg -= 0x10; *reg += bank->bank_num * ROCKCHIP_DRV_BANK_STRIDE; - *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4); + } + + *reg += ((pin_num / ROCKCHIP_DRV_PINS_PER_REG) * 4); + *bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG); + *bit *= ROCKCHIP_DRV_BITS_PER_PIN; +} - *bit = (pin_num % ROCKCHIP_DRV_PINS_PER_REG); - *bit *= ROCKCHIP_DRV_BITS_PER_PIN; +static int rk3288_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; + + rk3288_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; } static struct rockchip_pin_bank rk3288_pin_banks[] = { @@ -174,7 +193,7 @@ static struct rockchip_pin_ctrl rk3288_pin_ctrl = { .niomux_routes = ARRAY_SIZE(rk3288_mux_route_data), .set_mux = rk3288_set_mux, .pull_calc_reg = rk3288_calc_pull_reg_and_bit, - .drv_calc_reg = rk3288_calc_drv_reg_and_bit, + .set_drive = rk3288_set_drive, }; static const struct udevice_id rk3288_pinctrl_ids[] = { |