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Commit 728d3f5a authored by david.wu's avatar david.wu Committed by Linus Walleij
Browse files

pinctrl: rockchip: Add input schmitt support for rk3328 



Signed-off-by: default avatarDavid Wu <david.wu@rock-chips.com>
Reviewed-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent e3b357d7

drivers/pinctrl/pinctrl-rockchip.c

+23 −0
Original line number Diff line number Diff line
@@ -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[] = {