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| author |   Freeman Liu <freeman.liu@unisoc.com> | 2020-07-22 11:06:55 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-29 17:12:08 +0200 |
| commit | 2eef018efb9624b8717945f5e2ea0a1965520956 (patch) | |
| tree | 1c7c6b2b3938ca7151b8940190d7fc25f113446b /drivers/nvmem | |
| parent | nvmem: Enforce nvmem stride in the sysfs interface (diff) | |
| download | linux-dev-2eef018efb9624b8717945f5e2ea0a1965520956.tar.xz linux-dev-2eef018efb9624b8717945f5e2ea0a1965520956.zip | |
nvmem: sc27xx: add sc2730 efuse support
Add support to the new efuse IP which is integrated in the SC2730
which includes multiple blocks in a single chip.
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200722100705.7772-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvmem')
| -rw-r--r-- | drivers/nvmem/sc27xx-efuse.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/nvmem/sc27xx-efuse.c b/drivers/nvmem/sc27xx-efuse.c index ab5e7e0bc3d8..c825fc902d10 100644 --- a/drivers/nvmem/sc27xx-efuse.c +++ b/drivers/nvmem/sc27xx-efuse.c @@ -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}, { } }; |