diff options
Diffstat (limited to 'drivers/pinctrl/rockchip/pinctrl-rk322x.c')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl-rk322x.c | 100 |
1 files changed, 91 insertions, 9 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl-rk322x.c b/drivers/pinctrl/rockchip/pinctrl-rk322x.c index d2a6cd7055..c5e4fe30a7 100644 --- a/drivers/pinctrl/rockchip/pinctrl-rk322x.c +++ b/drivers/pinctrl/rockchip/pinctrl-rk322x.c @@ -141,6 +141,39 @@ static struct rockchip_mux_route_data rk3228_mux_route_data[] = { }, }; +static int rk3228_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) +{ + struct rockchip_pinctrl_priv *priv = bank->priv; + int iomux_num = (pin / 8); + struct regmap *regmap; + int reg, ret, mask, mux_type; + u8 bit; + u32 data, route_reg, route_val; + + regmap = (bank->iomux[iomux_num].type & IOMUX_SOURCE_PMU) + ? priv->regmap_pmu : priv->regmap_base; + + /* get basic quadrupel of mux registers and the correct reg inside */ + mux_type = bank->iomux[iomux_num].type; + reg = bank->iomux[iomux_num].offset; + reg += rockchip_get_mux_data(mux_type, pin, &bit, &mask); + + if (bank->route_mask & BIT(pin)) { + if (rockchip_get_mux_route(bank, pin, mux, &route_reg, + &route_val)) { + ret = regmap_write(regmap, route_reg, route_val); + if (ret) + return ret; + } + } + + data = (mask << (bit + 16)); + data |= (mux & mask) << bit; + ret = regmap_write(regmap, reg, data); + + return ret; +} + #define RK3228_PULL_OFFSET 0x100 static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, @@ -158,6 +191,33 @@ static void rk3228_calc_pull_reg_and_bit(struct rockchip_pin_bank *bank, *bit *= ROCKCHIP_PULL_BITS_PER_PIN; } +static int rk3228_set_pull(struct rockchip_pin_bank *bank, + int pin_num, int pull) +{ + struct regmap *regmap; + int reg, ret; + u8 bit, type; + u32 data; + + if (pull == PIN_CONFIG_BIAS_PULL_PIN_DEFAULT) + return -ENOTSUPP; + + rk3228_calc_pull_reg_and_bit(bank, pin_num, ®map, ®, &bit); + type = bank->pull_type[pin_num / 8]; + ret = rockchip_translate_pull_value(type, pull); + if (ret < 0) { + debug("unsupported pull setting %d\n", pull); + return ret; + } + + /* enable the write to the equivalent lower bits */ + data = ((1 << ROCKCHIP_PULL_BITS_PER_PIN) - 1) << (bit + 16); + data |= (ret << bit); + ret = regmap_write(regmap, reg, data); + + return ret; +} + #define RK3228_DRV_GRF_OFFSET 0x200 static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, @@ -175,6 +235,29 @@ static void rk3228_calc_drv_reg_and_bit(struct rockchip_pin_bank *bank, *bit *= ROCKCHIP_DRV_BITS_PER_PIN; } +static int rk3228_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; + + rk3228_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 rk3228_pin_banks[] = { PIN_BANK(0, 32, "gpio0"), PIN_BANK(1, 32, "gpio1"), @@ -183,15 +266,14 @@ static struct rockchip_pin_bank rk3228_pin_banks[] = { }; static struct rockchip_pin_ctrl rk3228_pin_ctrl = { - .pin_banks = rk3228_pin_banks, - .nr_banks = ARRAY_SIZE(rk3228_pin_banks), - .label = "RK3228-GPIO", - .type = RK3288, - .grf_mux_offset = 0x0, - .iomux_routes = rk3228_mux_route_data, - .niomux_routes = ARRAY_SIZE(rk3228_mux_route_data), - .pull_calc_reg = rk3228_calc_pull_reg_and_bit, - .drv_calc_reg = rk3228_calc_drv_reg_and_bit, + .pin_banks = rk3228_pin_banks, + .nr_banks = ARRAY_SIZE(rk3228_pin_banks), + .grf_mux_offset = 0x0, + .iomux_routes = rk3228_mux_route_data, + .niomux_routes = ARRAY_SIZE(rk3228_mux_route_data), + .set_mux = rk3228_set_mux, + .set_pull = rk3228_set_pull, + .set_drive = rk3228_set_drive, }; static const struct udevice_id rk3228_pinctrl_ids[] = { |