diff options
Diffstat (limited to 'drivers/pinctrl/rockchip/pinctrl-rk3368.c')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl-rk3368.c | 36 |
1 files changed, 28 insertions, 8 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk3368.c b/drivers/pinctrl/rockchip/pinctrl-rk3368.c index c1f692a1cf..40cc846fa8 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rk3368.c +++ b/drivers/pinctrl/rockchip/pinctrl-rk3368.c @@ -79,10 +79,6 @@ static void rk3368_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, if (bank->bank_num == 0) { *regmap = priv->regmap_pmu; *reg = RK3368_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 = RK3368_DRV_GRF_OFFSET; @@ -90,11 +86,35 @@ static void rk3368_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 rk3368_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; + + rk3368_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 rk3368_pin_banks[] = { @@ -117,7 +137,7 @@ static struct rockchip_pin_ctrl rk3368_pin_ctrl = { .pmu_mux_offset = 0x0, .set_mux = rk3368_set_mux, .pull_calc_reg = rk3368_calc_pull_reg_and_bit, - .drv_calc_reg = rk3368_calc_drv_reg_and_bit, + .set_drive = rk3368_set_drive, }; static const struct udevice_id rk3368_pinctrl_ids[] = { |