add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/nvmem/sc27xx-efuse.c
..
..
@@ -4,12 +4,14 @@
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4
 #include <linux/hwspinlock.h>
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5
 #include <linux/module.h>
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 #include <linux/of.h>
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+#include <linux/of_device.h>
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 #include <linux/platform_device.h>
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 #include <linux/regmap.h>
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 #include <linux/nvmem-provider.h>
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11
 
11
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 /* PMIC global registers definition */
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 #define SC27XX_MODULE_EN		0xc08
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+#define SC2730_MODULE_EN		0x1808
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 #define SC27XX_EFUSE_EN			BIT(6)
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16
 
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 /* Efuse controller registers definition */
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@@ -49,12 +51,29 @@
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 #define SC27XX_EFUSE_POLL_TIMEOUT	3000000
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 #define SC27XX_EFUSE_POLL_DELAY_US	10000
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53
 
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+/*
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+ * Since different PMICs of SC27xx series can have different
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+ * address , we should save address in the device data structure.
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+ */
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+struct sc27xx_efuse_variant_data {
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+	u32 module_en;
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+};
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+
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 struct sc27xx_efuse {
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 	struct device *dev;
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 	struct regmap *regmap;
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 	struct hwspinlock *hwlock;
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 	struct mutex mutex;
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 	u32 base;
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+	const struct sc27xx_efuse_variant_data *var_data;
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+};
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+
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+static const struct sc27xx_efuse_variant_data sc2731_edata = {
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+	.module_en = SC27XX_MODULE_EN,
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+};
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+
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+static const struct sc27xx_efuse_variant_data sc2730_edata = {
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+	.module_en = SC2730_MODULE_EN,
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 };
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78
 
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 /*
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@@ -106,10 +125,12 @@
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 static int sc27xx_efuse_read(void *context, u32 offset, void *val, size_t bytes)
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126
 {
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 	struct sc27xx_efuse *efuse = context;
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-	u32 buf;
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+	u32 buf, blk_index = offset / SC27XX_EFUSE_BLOCK_WIDTH;
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+	u32 blk_offset = (offset % SC27XX_EFUSE_BLOCK_WIDTH) * BITS_PER_BYTE;
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 	int ret;
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131
 
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-	if (offset > SC27XX_EFUSE_BLOCK_MAX || bytes > SC27XX_EFUSE_BLOCK_WIDTH)
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+	if (blk_index > SC27XX_EFUSE_BLOCK_MAX ||
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+	    bytes > SC27XX_EFUSE_BLOCK_WIDTH)
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 		return -EINVAL;
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135
 
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 	ret = sc27xx_efuse_lock(efuse);
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@@ -117,7 +138,7 @@
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 		return ret;
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139
 
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 	/* Enable the efuse controller. */
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-	ret = regmap_update_bits(efuse->regmap, SC27XX_MODULE_EN,
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+	ret = regmap_update_bits(efuse->regmap, efuse->var_data->module_en,
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 				 SC27XX_EFUSE_EN, SC27XX_EFUSE_EN);
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 	if (ret)
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 		goto unlock_efuse;
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@@ -133,7 +154,7 @@
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 	/* Set the block address to be read. */
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 	ret = regmap_write(efuse->regmap,
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 			   efuse->base + SC27XX_EFUSE_BLOCK_INDEX,
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-			   offset & SC27XX_EFUSE_BLOCK_MASK);
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+			   blk_index & SC27XX_EFUSE_BLOCK_MASK);
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 	if (ret)
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 		goto disable_efuse;
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160
 
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@@ -167,12 +188,14 @@
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188
 
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 disable_efuse:
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 	/* Disable the efuse controller after reading. */
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-	regmap_update_bits(efuse->regmap, SC27XX_MODULE_EN, SC27XX_EFUSE_EN, 0);
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+	regmap_update_bits(efuse->regmap, efuse->var_data->module_en, SC27XX_EFUSE_EN, 0);
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192
 unlock_efuse:
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 	sc27xx_efuse_unlock(efuse);
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194
 
174
-	if (!ret)
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+	if (!ret) {
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+		buf >>= blk_offset;
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197
 		memcpy(val, &buf, bytes);
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+	}
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199
 
177
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 	return ret;
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201
 }
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@@ -207,7 +230,7 @@
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 		return ret;
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231
 	}
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232
 
210
-	efuse->hwlock = hwspin_lock_request_specific(ret);
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+	efuse->hwlock = devm_hwspin_lock_request_specific(&pdev->dev, ret);
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234
 	if (!efuse->hwlock) {
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 		dev_err(&pdev->dev, "failed to request hwspinlock\n");
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 		return -ENXIO;
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@@ -215,7 +238,7 @@
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238
 
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 	mutex_init(&efuse->mutex);
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 	efuse->dev = &pdev->dev;
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-	platform_set_drvdata(pdev, efuse);
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+	efuse->var_data = of_device_get_match_data(&pdev->dev);
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242
 
220
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 	econfig.stride = 1;
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 	econfig.word_size = 1;
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@@ -228,29 +251,20 @@
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 	nvmem = devm_nvmem_register(&pdev->dev, &econfig);
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 	if (IS_ERR(nvmem)) {
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 		dev_err(&pdev->dev, "failed to register nvmem config\n");
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-		hwspin_lock_free(efuse->hwlock);
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254
 		return PTR_ERR(nvmem);
233
255
 	}
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256
 
235
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 	return 0;
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258
 }
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259
 
238
-static int sc27xx_efuse_remove(struct platform_device *pdev)
239
-{
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-	struct sc27xx_efuse *efuse = platform_get_drvdata(pdev);
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-
242
-	hwspin_lock_free(efuse->hwlock);
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-	return 0;
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-}
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-
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260
 static const struct of_device_id sc27xx_efuse_of_match[] = {
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-	{ .compatible = "sprd,sc2731-efuse" },
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+	{ .compatible = "sprd,sc2731-efuse", .data = &sc2731_edata},
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+	{ .compatible = "sprd,sc2730-efuse", .data = &sc2730_edata},
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 	{ }
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264
 };
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265
 
251
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 static struct platform_driver sc27xx_efuse_driver = {
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267
 	.probe = sc27xx_efuse_probe,
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-	.remove = sc27xx_efuse_remove,
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268
 	.driver = {
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269
 		.name = "sc27xx-efuse",
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270
 		.of_match_table = sc27xx_efuse_of_match,