Commit 148b95ee authored by Biao Huang's avatar Biao Huang Committed by Linus Walleij
Browse files

pinctrl: mediatek: Add Pinctrl/GPIO/EINT driver for mt2701 



Add mt2701 support using mediatek common pinctrl driver.
MT2701 have some special pins need an extra setting register
than other ICs, so adding this support to common code.

Signed-off-by: default avatarBiao Huang <biao.huang@mediatek.com>
Acked-by: default avatarYingjoe Chen <yingjoe.chen@mediatek.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 53723815

drivers/pinctrl/mediatek/Kconfig

+6 −0
Original line number Diff line number Diff line
@@ -9,6 +9,12 @@ config PINCTRL_MTK_COMMON 
	select OF_GPIO



# For ARMv7 SoCs

config PINCTRL_MT2701

	bool "Mediatek MT2701 pin control" if COMPILE_TEST && !MACH_MT2701

	depends on OF

	default MACH_MT2701

	select PINCTRL_MTK_COMMON



config PINCTRL_MT8135

	bool "Mediatek MT8135 pin control" if COMPILE_TEST && !MACH_MT8135

	depends on OF

drivers/pinctrl/mediatek/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
obj-$(CONFIG_PINCTRL_MTK_COMMON)	+= pinctrl-mtk-common.o



# SoC Drivers

obj-$(CONFIG_PINCTRL_MT2701)		+= pinctrl-mt2701.o

obj-$(CONFIG_PINCTRL_MT8135)		+= pinctrl-mt8135.o

obj-$(CONFIG_PINCTRL_MT8127)		+= pinctrl-mt8127.o

obj-$(CONFIG_PINCTRL_MT8173)		+= pinctrl-mt8173.o

drivers/pinctrl/mediatek/pinctrl-mt2701.c

0 → 100644
+586 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/pinctrl/mediatek/pinctrl-mtk-common.c

+14 −0
Original line number Diff line number Diff line
@@ -47,6 +47,8 @@ 
static const char * const mtk_gpio_functions[] = {

	"func0", "func1", "func2", "func3",

	"func4", "func5", "func6", "func7",

	"func8", "func9", "func10", "func11",

	"func12", "func13", "func14", "func15",

};



/*
@@ -81,6 +83,9 @@ static int mtk_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, 
	reg_addr = mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;

	bit = BIT(offset & 0xf);



	if (pctl->devdata->spec_dir_set)

		pctl->devdata->spec_dir_set(&reg_addr, offset);



	if (input)

		/* Different SoC has different alignment offset. */

		reg_addr = CLR_ADDR(reg_addr, pctl);
@@ -675,9 +680,14 @@ static int mtk_pmx_set_mode(struct pinctrl_dev *pctldev, 
	unsigned int mask = (1L << GPIO_MODE_BITS) - 1;

	struct mtk_pinctrl *pctl = pinctrl_dev_get_drvdata(pctldev);



	if (pctl->devdata->spec_pinmux_set)

		pctl->devdata->spec_pinmux_set(mtk_get_regmap(pctl, pin),

					pin, mode);



	reg_addr = ((pin / MAX_GPIO_MODE_PER_REG) << pctl->devdata->port_shf)

			+ pctl->devdata->pinmux_offset;



	mode &= mask;

	bit = pin % MAX_GPIO_MODE_PER_REG;

	mask <<= (GPIO_MODE_BITS * bit);

	val = (mode << (GPIO_MODE_BITS * bit));
@@ -754,6 +764,10 @@ static int mtk_gpio_get_direction(struct gpio_chip *chip, unsigned offset) 


	reg_addr =  mtk_get_port(pctl, offset) + pctl->devdata->dir_offset;

	bit = BIT(offset & 0xf);



	if (pctl->devdata->spec_dir_set)

		pctl->devdata->spec_dir_set(&reg_addr, offset);



	regmap_read(pctl->regmap1, reg_addr, &read_val);

	return !(read_val & bit);

}

drivers/pinctrl/mediatek/pinctrl-mtk-common.h

+11 −1
Original line number Diff line number Diff line
@@ -209,7 +209,14 @@ struct mtk_eint_offsets { 
 * means when user set smt, input enable is set at the same time. So they

 * also need special control. If special control is success, this should

 * return 0, otherwise return non-zero value.

 *

 * @spec_pinmux_set: In some cases, there are two pinmux functions share

 * the same value in the same segment of pinmux control register. If user

 * want to use one of the two functions, they need an extra bit setting to

 * select the right one.

 * @spec_dir_set: In very few SoCs, direction control registers are not

 * arranged continuously, they may be cut to parts. So they need special

 * dir setting.



 * @dir_offset: The direction register offset.

 * @pullen_offset: The pull-up/pull-down enable register offset.

 * @pinmux_offset: The pinmux register offset.
@@ -234,6 +241,9 @@ struct mtk_pinctrl_devdata { 
			unsigned char align, bool isup, unsigned int arg);

	int (*spec_ies_smt_set)(struct regmap *reg, unsigned int pin,

			unsigned char align, int value, enum pin_config_param arg);

	void (*spec_pinmux_set)(struct regmap *reg, unsigned int pin,

			unsigned int mode);

	void (*spec_dir_set)(unsigned int *reg_addr, unsigned int pin);

	unsigned int dir_offset;

	unsigned int ies_offset;

	unsigned int smt_offset;