diff options
| author | david.wu <david.wu@rock-chips.com> | 2017-03-02 15:11:24 +0800 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-03-14 14:42:26 +0100 |
| commit | 728d3f5afd991a44b4ec9d019d8556d8cb68db3f (patch) | |
| tree | 6b7a964473c15b7125719a43b0d0085e62b0a7a6 /drivers/pinctrl | |
| parent | e3b357d7dfe6b38a6064562bacf5c912b3443ac0 (diff) | |
pinctrl: rockchip: Add input schmitt support for rk3328
Signed-off-by: David Wu <david.wu@rock-chips.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-rockchip.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 3723fd43e463..1e276dfe1763 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -1358,6 +1358,28 @@ static int rockchip_set_pull(struct rockchip_pin_bank *bank, return ret; } +#define RK3328_SCHMITT_BITS_PER_PIN 1 +#define RK3328_SCHMITT_PINS_PER_REG 16 +#define RK3328_SCHMITT_BANK_STRIDE 8 +#define RK3328_SCHMITT_GRF_OFFSET 0x380 + +static int rk3328_calc_schmitt_reg_and_bit(struct rockchip_pin_bank *bank, + int pin_num, + struct regmap **regmap, + int *reg, u8 *bit) +{ + struct rockchip_pinctrl *info = bank->drvdata; + + *regmap = info->regmap_base; + *reg = RK3328_SCHMITT_GRF_OFFSET; + + *reg += bank->bank_num * RK3328_SCHMITT_BANK_STRIDE; + *reg += ((pin_num / RK3328_SCHMITT_PINS_PER_REG) * 4); + *bit = pin_num % RK3328_SCHMITT_PINS_PER_REG; + + return 0; +} + static int rockchip_get_schmitt(struct rockchip_pin_bank *bank, int pin_num) { struct rockchip_pinctrl *info = bank->drvdata; @@ -2861,6 +2883,7 @@ static struct rockchip_pin_ctrl rk3328_pin_ctrl = { .pull_calc_reg = rk3228_calc_pull_reg_and_bit, .drv_calc_reg = rk3228_calc_drv_reg_and_bit, .iomux_recalc = rk3328_recalc_mux, + .schmitt_calc_reg = rk3328_calc_schmitt_reg_and_bit, }; static struct rockchip_pin_bank rk3368_pin_banks[] = { |