// SPDX-License-Identifier: GPL-2.0 // Copyright (C) 2018 Spreadtrum Communications Inc. #include <linux/hwspinlock.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/nvmem-provider.h> /* PMIC global registers definition */ #define SC27XX_MODULE_EN … #define SC2730_MODULE_EN … #define SC27XX_EFUSE_EN … /* Efuse controller registers definition */ #define SC27XX_EFUSE_GLB_CTRL … #define SC27XX_EFUSE_DATA_RD … #define SC27XX_EFUSE_DATA_WR … #define SC27XX_EFUSE_BLOCK_INDEX … #define SC27XX_EFUSE_MODE_CTRL … #define SC27XX_EFUSE_STATUS … #define SC27XX_EFUSE_WR_TIMING_CTRL … #define SC27XX_EFUSE_RD_TIMING_CTRL … #define SC27XX_EFUSE_EFUSE_DEB_CTRL … /* Mask definition for SC27XX_EFUSE_BLOCK_INDEX register */ #define SC27XX_EFUSE_BLOCK_MASK … /* Bits definitions for SC27XX_EFUSE_MODE_CTRL register */ #define SC27XX_EFUSE_PG_START … #define SC27XX_EFUSE_RD_START … #define SC27XX_EFUSE_CLR_RDDONE … /* Bits definitions for SC27XX_EFUSE_STATUS register */ #define SC27XX_EFUSE_PGM_BUSY … #define SC27XX_EFUSE_READ_BUSY … #define SC27XX_EFUSE_STANDBY … #define SC27XX_EFUSE_GLOBAL_PROT … #define SC27XX_EFUSE_RD_DONE … /* Block number and block width (bytes) definitions */ #define SC27XX_EFUSE_BLOCK_MAX … #define SC27XX_EFUSE_BLOCK_WIDTH … /* Timeout (ms) for the trylock of hardware spinlocks */ #define SC27XX_EFUSE_HWLOCK_TIMEOUT … /* Timeout (us) of polling the status */ #define SC27XX_EFUSE_POLL_TIMEOUT … #define SC27XX_EFUSE_POLL_DELAY_US … /* * Since different PMICs of SC27xx series can have different * address , we should save address in the device data structure. */ struct sc27xx_efuse_variant_data { … }; struct sc27xx_efuse { … }; static const struct sc27xx_efuse_variant_data sc2731_edata = …; static const struct sc27xx_efuse_variant_data sc2730_edata = …; /* * On Spreadtrum platform, we have multi-subsystems will access the unique * efuse controller, so we need one hardware spinlock to synchronize between * the multiple subsystems. */ static int sc27xx_efuse_lock(struct sc27xx_efuse *efuse) { … } static void sc27xx_efuse_unlock(struct sc27xx_efuse *efuse) { … } static int sc27xx_efuse_poll_status(struct sc27xx_efuse *efuse, u32 bits) { … } static int sc27xx_efuse_read(void *context, u32 offset, void *val, size_t bytes) { … } static int sc27xx_efuse_probe(struct platform_device *pdev) { … } static const struct of_device_id sc27xx_efuse_of_match[] = …; MODULE_DEVICE_TABLE(of, sc27xx_efuse_of_match); static struct platform_driver sc27xx_efuse_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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