soc/mediatek/mt8186: Move GPIO driving-related functions to common

Move GPIO driving-related functions to common for code reuse.

BUG=b:270911452
TEST=build pass

Change-Id: I234a2b7ef5075313144a930332bed10ffec00c6c
Signed-off-by: Jason Chen <Jason-ch.Chen@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74068
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 2 insertions, 121 deletions

diff --git a/src/soc/mediatek/mt8186/gpio.c b/src/soc/mediatek/mt8186/gpio.c
index 0dad34205c..a92349c3a5 100644
--- a/src/soc/mediatek/mt8186/gpio.c
+++ b/src/soc/mediatek/mt8186/gpio.c
@@ -278,7 +278,7 @@ void *gpio_find_reg_addr(gpio_t gpio)
 	return reg_addr;
 }
 
-static const struct gpio_drv_info *get_gpio_driving_info(uint32_t raw_id)
+const struct gpio_drv_info *get_gpio_driving_info(uint32_t raw_id)
 {
 	if (ENV_BOOTBLOCK) {
 		uint32_t id;
@@ -321,7 +321,7 @@ static const struct gpio_drv_info *get_gpio_driving_info(uint32_t raw_id)
 	}
 }
 
-static const struct gpio_drv_info *get_gpio_driving_adv_info(uint32_t raw_id)
+const struct gpio_drv_info *get_gpio_driving_adv_info(uint32_t raw_id)
 {
 	if (ENV_BOOTBLOCK) {
 		return NULL;
@@ -331,111 +331,3 @@ static const struct gpio_drv_info *get_gpio_driving_adv_info(uint32_t raw_id)
 		return &gpio_driving_adv_info[raw_id];
 	}
 }
-
-static inline bool is_valid_drv(uint8_t drv)
-{
-	return drv <= GPIO_DRV_16_MA;
-}
-
-static inline bool is_valid_drv_adv(enum gpio_drv_adv drv)
-{
-	return drv <= GPIO_DRV_ADV_1_MA && drv >= GPIO_DRV_ADV_125_UA;
-}
-
-int gpio_set_driving(gpio_t gpio, uint8_t drv)
-{
-	uint32_t mask;
-	const struct gpio_drv_info *info = get_gpio_driving_info(gpio.id);
-	const struct gpio_drv_info *adv_info = get_gpio_driving_adv_info(gpio.id);
-	void *reg, *reg_adv, *reg_addr;
-
-	if (!info)
-		return -1;
-
-	if (!is_valid_drv(drv))
-		return -1;
-
-	if (info->width == 0)
-		return -1;
-
-	mask = BIT(info->width) - 1;
-	/* Check setting value is not beyond width */
-	if ((uint32_t)drv > mask)
-		return -1;
-
-	reg_addr = gpio_find_reg_addr(gpio);
-	reg = reg_addr + info->offset;
-	clrsetbits32(reg, mask << info->shift, drv << info->shift);
-
-	/* Disable EH if supported */
-	if (adv_info && adv_info->width != 0) {
-		reg_adv = reg_addr + adv_info->offset;
-		clrbits32(reg_adv, BIT(adv_info->shift));
-	}
-
-	return 0;
-}
-
-int gpio_get_driving(gpio_t gpio)
-{
-	const struct gpio_drv_info *info = get_gpio_driving_info(gpio.id);
-	void *reg;
-
-	if (!info)
-		return -1;
-
-	reg = gpio_find_reg_addr(gpio) + info->offset;
-	if (info->width == 0)
-		return -1;
-
-	return (read32(reg) >> info->shift) & (BIT(info->width) - 1);
-}
-
-int gpio_set_driving_adv(gpio_t gpio, enum gpio_drv_adv drv)
-{
-	uint32_t mask;
-	const struct gpio_drv_info *adv_info = get_gpio_driving_adv_info(gpio.id);
-	void *reg_adv;
-
-	if (!adv_info)
-		return -1;
-
-	if (!is_valid_drv_adv(drv))
-		return -1;
-
-	reg_adv = gpio_find_reg_addr(gpio) + adv_info->offset;
-
-	if (adv_info->width == 0)
-		return -1;
-
-	/* Not include EH bit (the lowest bit) */
-	if ((uint32_t)drv > (BIT(adv_info->width - 1) - 1))
-		return -1;
-
-	mask = BIT(adv_info->width) - 1;
-	/* EH enable */
-	drv = (drv << 1) | BIT(0);
-
-	clrsetbits32(reg_adv, mask << adv_info->shift, drv << adv_info->shift);
-
-	return 0;
-}
-
-int gpio_get_driving_adv(gpio_t gpio)
-{
-	const struct gpio_drv_info *adv_info = get_gpio_driving_adv_info(gpio.id);
-	void *reg_adv;
-	uint32_t drv;
-
-	if (!adv_info)
-		return -1;
-
-	reg_adv = gpio_find_reg_addr(gpio) + adv_info->offset;
-	if (adv_info->width == 0)
-		return -1;
-
-	drv = (read32(reg_adv) >> adv_info->shift) & (BIT(adv_info->width) - 1);
-
-	/* Drop EH bit */
-	return drv >> 1;
-}
diff --git a/src/soc/mediatek/mt8186/include/soc/gpio.h b/src/soc/mediatek/mt8186/include/soc/gpio.h
index 1377e015a1..4ce1e98a85 100644
--- a/src/soc/mediatek/mt8186/include/soc/gpio.h
+++ b/src/soc/mediatek/mt8186/include/soc/gpio.h
@@ -20,17 +20,6 @@ enum {
 	GPIO_MODE_BITS = 4,
 };
 
-enum gpio_drv {
-	GPIO_DRV_2_MA = 0,
-	GPIO_DRV_4_MA = 1,
-	GPIO_DRV_6_MA = 2,
-	GPIO_DRV_8_MA = 3,
-	GPIO_DRV_10_MA = 4,
-	GPIO_DRV_12_MA = 5,
-	GPIO_DRV_14_MA = 6,
-	GPIO_DRV_16_MA = 7,
-};
-
 #define GPIO_ID(name) PAD_##name##_ID
 
 #define PIN(id, name, flag, bit, base, offset, \