From b16ac8d28034b1275a2cde2b3144d82bfcaf801f Mon Sep 17 00:00:00 2001
From: Jarried Lin <jarried.lin@mediatek.corp-partner.google.com>
Date: Tue, 20 Aug 2024 15:40:44 +0800
Subject: soc/mediatek: Move SNFC pad_func into MediaTek common directory

To reduce duplicate pad_func of MediaTek SoCs, move the pad_fun to a
common directory.

TEST=Build pass
BUG=b:317009620

Change-Id: I145233ef887a38251e8fc129b8357f236c5f7a2b
Signed-off-by: Jarried Lin <jarried.lin@mediatek.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/83989
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
---
 src/soc/mediatek/common/flash_controller.c             | 18 ++++++++++++++++++
 .../common/include/soc/flash_controller_common.h       |  8 ++++++++
 2 files changed, 26 insertions(+)

(limited to 'src/soc/mediatek/common')

diff --git a/src/soc/mediatek/common/flash_controller.c b/src/soc/mediatek/common/flash_controller.c
index c4c758ef19..4eaa37d3c3 100644
--- a/src/soc/mediatek/common/flash_controller.c
+++ b/src/soc/mediatek/common/flash_controller.c
@@ -223,3 +223,21 @@ int mtk_spi_flash_probe(const struct spi_slave *spi,
 
 	return 0;
 }
+
+int mtk_snfc_init_pad_func(const struct mtk_snfc_pad_func *pad_func, enum gpio_drv strength)
+{
+	gpio_set_pull(pad_func->gpio, GPIO_PULL_ENABLE, pad_func->select);
+	gpio_set_mode(pad_func->gpio, pad_func->func);
+
+	if (gpio_set_driving(pad_func->gpio, strength) < 0) {
+		printk(BIOS_ERR,
+		       "%s: failed to set pin drive to %d for %d\n",
+		       __func__, strength, pad_func->gpio.id);
+		return -1;
+	}
+
+	printk(BIOS_DEBUG, "%s: got pin drive: %#x\n", __func__,
+	       gpio_get_driving(pad_func->gpio));
+
+	return 0;
+}
diff --git a/src/soc/mediatek/common/include/soc/flash_controller_common.h b/src/soc/mediatek/common/include/soc/flash_controller_common.h
index 2da3805da1..c71ae1773d 100644
--- a/src/soc/mediatek/common/include/soc/flash_controller_common.h
+++ b/src/soc/mediatek/common/include/soc/flash_controller_common.h
@@ -3,6 +3,7 @@
 #ifndef __SOC_MEDIATEK_COMMON_FLASH_CONTROLLER_COMMON_H__
 #define __SOC_MEDIATEK_COMMON_FLASH_CONTROLLER_COMMON_H__
 
+#include <gpio.h>
 #include <spi-generic.h>
 #include <stdint.h>
 #include <soc/addressmap.h>
@@ -75,6 +76,13 @@ struct mtk_nor_regs {
 };
 check_member(mtk_nor_regs, fdma_end_dadr, 0x724);
 
+struct mtk_snfc_pad_func {
+	gpio_t gpio;
+	u8 func;
+	enum pull_select select;
+};
+
 int mtk_spi_flash_probe(const struct spi_slave *spi, struct spi_flash *flash);
+int mtk_snfc_init_pad_func(const struct mtk_snfc_pad_func *pad_func, enum gpio_drv strength);
 
 #endif /* __SOC_MEDIATEK_COMMON_FLASH_CONTROLLER_COMMON_H__ */
-- 
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