nvmem: sc27xx: add sc2730 efuse support (2eef018e) · Commits · 戴 / test

drivers/nvmem/sc27xx-efuse.c

+24 −3

Original line number	Diff line number	Diff line
		@@ -4,12 +4,14 @@
		#include <linux/hwspinlock.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/of_device.h>
		#include <linux/platform_device.h>
		#include <linux/regmap.h>
		#include <linux/nvmem-provider.h>

		/* PMIC global registers definition */
		#define SC27XX_MODULE_EN 0xc08
		#define SC2730_MODULE_EN 0x1808
		#define SC27XX_EFUSE_EN BIT(6)

		/* Efuse controller registers definition */
		@@ -49,12 +51,29 @@
		#define SC27XX_EFUSE_POLL_TIMEOUT 3000000
		#define SC27XX_EFUSE_POLL_DELAY_US 10000

		/*
		* Since different PMICs of SC27xx series can have different
		* address , we should save address in the device data structure.
		*/
		struct sc27xx_efuse_variant_data {
		u32 module_en;
		};

		struct sc27xx_efuse {
		struct device *dev;
		struct regmap *regmap;
		struct hwspinlock *hwlock;
		struct mutex mutex;
		u32 base;
		const struct sc27xx_efuse_variant_data *var_data;
		};

		static const struct sc27xx_efuse_variant_data sc2731_edata = {
		.module_en = SC27XX_MODULE_EN,
		};

		static const struct sc27xx_efuse_variant_data sc2730_edata = {
		.module_en = SC2730_MODULE_EN,
		};

		/*
		@@ -119,7 +138,7 @@ static int sc27xx_efuse_read(void context, u32 offset, void val, size_t bytes)
		return ret;

		/* Enable the efuse controller. */
		ret = regmap_update_bits(efuse->regmap, SC27XX_MODULE_EN,
		ret = regmap_update_bits(efuse->regmap, efuse->var_data->module_en,
		SC27XX_EFUSE_EN, SC27XX_EFUSE_EN);
		if (ret)
		goto unlock_efuse;
		@@ -169,7 +188,7 @@ static int sc27xx_efuse_read(void context, u32 offset, void val, size_t bytes)

		disable_efuse:
		/* Disable the efuse controller after reading. */
		regmap_update_bits(efuse->regmap, SC27XX_MODULE_EN, SC27XX_EFUSE_EN, 0);
		regmap_update_bits(efuse->regmap, efuse->var_data->module_en, SC27XX_EFUSE_EN, 0);
		unlock_efuse:
		sc27xx_efuse_unlock(efuse);

		@@ -219,6 +238,7 @@ static int sc27xx_efuse_probe(struct platform_device *pdev)

		mutex_init(&efuse->mutex);
		efuse->dev = &pdev->dev;
		efuse->var_data = of_device_get_match_data(&pdev->dev);

		econfig.stride = 1;
		econfig.word_size = 1;
		@@ -238,7 +258,8 @@ static int sc27xx_efuse_probe(struct platform_device *pdev)
		}

		static const struct of_device_id sc27xx_efuse_of_match[] = {
		{ .compatible = "sprd,sc2731-efuse" },
		{ .compatible = "sprd,sc2731-efuse", .data = &sc2731_edata},
		{ .compatible = "sprd,sc2730-efuse", .data = &sc2730_edata},
		{ }
		};

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