soc/mediatek: Remove redundant struct pad_func and PAD_* definitions

Clean up redundant `struct pad_func` and `PAD_*` definitions. This patch
also refactors the PAD_* macros by,
- Repurposing PAD_FUNC and dropping PAD_FUNC_SEL.
- Adding PAD_FUNC_DOWN and PAD_FUNC_UP to avoid the implicit
  initialization.

BUG=none
TEST=emerge-{elm, kukui, asurada, cherry, corsola, geralt, rauru} coreboot

Change-Id: I12b8f6749015bff52988208a7c3aa01e952612c6
Signed-off-by: Yidi Lin <yidilin@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84222
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 21 insertions, 28 deletions

diff --git a/src/soc/mediatek/mt8192/i2c.c b/src/soc/mediatek/mt8192/i2c.c
index a3f236ad8a..3e8c21e30a 100644
--- a/src/soc/mediatek/mt8192/i2c.c
+++ b/src/soc/mediatek/mt8192/i2c.c
@@ -66,53 +66,46 @@ struct mtk_i2c mtk_i2c_bus_controller[] = {
 _Static_assert(ARRAY_SIZE(mtk_i2c_bus_controller) == I2C_BUS_NUMBER,
 	       "Wrong size of mtk_i2c_bus_controller");
 
-struct pad_func {
-	gpio_t gpio;
-	u8 func;
-};
-
-#define PAD_FUNC(name, func) {GPIO(name), PAD_##name##_FUNC_##func}
-
 static const struct pad_func i2c_funcs[I2C_BUS_NUMBER][2] = {
 	[0] = {
-		PAD_FUNC(SDA0, SDA0),
-		PAD_FUNC(SCL0, SCL0),
+		PAD_FUNC_UP(SDA0, SDA0),
+		PAD_FUNC_UP(SCL0, SCL0),
 	},
 	[1] = {
-		PAD_FUNC(SDA1, SDA1),
-		PAD_FUNC(SCL1, SCL1),
+		PAD_FUNC_UP(SDA1, SDA1),
+		PAD_FUNC_UP(SCL1, SCL1),
 	},
 	[2] = {
-		PAD_FUNC(SDA2, SDA2),
-		PAD_FUNC(SCL2, SCL2),
+		PAD_FUNC_UP(SDA2, SDA2),
+		PAD_FUNC_UP(SCL2, SCL2),
 	},
 	[3] = {
-		PAD_FUNC(SDA3, SDA3),
-		PAD_FUNC(SCL3, SCL3),
+		PAD_FUNC_UP(SDA3, SDA3),
+		PAD_FUNC_UP(SCL3, SCL3),
 	},
 	[4] = {
-		PAD_FUNC(SDA4, SDA4),
-		PAD_FUNC(SCL4, SCL4),
+		PAD_FUNC_UP(SDA4, SDA4),
+		PAD_FUNC_UP(SCL4, SCL4),
 	},
 	[5] = {
-		PAD_FUNC(SDA5, SDA5),
-		PAD_FUNC(SCL5, SCL5),
+		PAD_FUNC_UP(SDA5, SDA5),
+		PAD_FUNC_UP(SCL5, SCL5),
 	},
 	[6] = {
-		PAD_FUNC(SDA6, SDA6),
-		PAD_FUNC(SCL6, SCL6),
+		PAD_FUNC_UP(SDA6, SDA6),
+		PAD_FUNC_UP(SCL6, SCL6),
 	},
 	[7] = {
-		PAD_FUNC(SDA7, SDA7),
-		PAD_FUNC(SCL7, SCL7),
+		PAD_FUNC_UP(SDA7, SDA7),
+		PAD_FUNC_UP(SCL7, SCL7),
 	},
 	[8] = {
-		PAD_FUNC(SDA8, SDA8),
-		PAD_FUNC(SCL8, SCL8),
+		PAD_FUNC_UP(SDA8, SDA8),
+		PAD_FUNC_UP(SCL8, SCL8),
 	},
 	[9] = {
-		PAD_FUNC(SDA9, SDA9),
-		PAD_FUNC(SCL9, SCL9),
+		PAD_FUNC_UP(SDA9, SDA9),
+		PAD_FUNC_UP(SCL9, SCL9),
 	},
 };
 
@@ -123,7 +116,7 @@ static void mtk_i2c_set_gpio_pinmux(uint8_t bus)
 	const struct pad_func *ptr = i2c_funcs[bus];
 	for (size_t i = 0; i < 2; i++) {
 		gpio_set_mode(ptr[i].gpio, ptr[i].func);
-		gpio_set_pull(ptr[i].gpio, GPIO_PULL_ENABLE, GPIO_PULL_UP);
+		gpio_set_pull(ptr[i].gpio, GPIO_PULL_ENABLE, ptr[i].select);
 	}
 }