// SPDX-License-Identifier: GPL-2.0-or-later /* * twl_core.c - driver for TWL4030/TWL5030/TWL60X0/TPS659x0 PM * and audio CODEC devices * * Copyright (C) 2005-2006 Texas Instruments, Inc. * * Modifications to defer interrupt handling to a kernel thread: * Copyright (C) 2006 MontaVista Software, Inc. * * Based on tlv320aic23.c: * Copyright (c) by Kai Svahn <[email protected]> * * Code cleanup and modifications to IRQ handler. * by syed khasim <[email protected]> */ #include <linux/init.h> #include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/device.h> #include <linux/of.h> #include <linux/of_irq.h> #include <linux/of_platform.h> #include <linux/irq.h> #include <linux/irqdomain.h> #include <linux/regulator/machine.h> #include <linux/i2c.h> #include <linux/mfd/core.h> #include <linux/mfd/twl.h> /* Register descriptions for audio */ #include <linux/mfd/twl4030-audio.h> #include "twl-core.h" /* * The TWL4030 "Triton 2" is one of a family of a multi-function "Power * Management and System Companion Device" chips originally designed for * use in OMAP2 and OMAP 3 based systems. Its control interfaces use I2C, * often at around 3 Mbit/sec, including for interrupt handling. * * This driver core provides genirq support for the interrupts emitted, * by the various modules, and exports register access primitives. * * FIXME this driver currently requires use of the first interrupt line * (and associated registers). */ #define DRIVER_NAME … /* Triton Core internal information (BEGIN) */ /* Base Address defns for twl4030_map[] */ /* subchip/slave 0 - USB ID */ #define TWL4030_BASEADD_USB … /* subchip/slave 1 - AUD ID */ #define TWL4030_BASEADD_AUDIO_VOICE … #define TWL4030_BASEADD_GPIO … #define TWL4030_BASEADD_INTBR … #define TWL4030_BASEADD_PIH … #define TWL4030_BASEADD_TEST … /* subchip/slave 2 - AUX ID */ #define TWL4030_BASEADD_INTERRUPTS … #define TWL4030_BASEADD_LED … #define TWL4030_BASEADD_MADC … #define TWL4030_BASEADD_MAIN_CHARGE … #define TWL4030_BASEADD_PRECHARGE … #define TWL4030_BASEADD_PWM … #define TWL4030_BASEADD_KEYPAD … #define TWL5031_BASEADD_ACCESSORY … #define TWL5031_BASEADD_INTERRUPTS … /* subchip/slave 3 - POWER ID */ #define TWL4030_BASEADD_BACKUP … #define TWL4030_BASEADD_INT … #define TWL4030_BASEADD_PM_MASTER … #define TWL4030_BASEADD_PM_RECEIVER … #define TWL4030_DCDC_GLOBAL_CFG … #define SMARTREFLEX_ENABLE … #define TWL4030_BASEADD_RTC … #define TWL4030_BASEADD_SECURED_REG … /* Triton Core internal information (END) */ /* subchip/slave 0 0x48 - POWER */ #define TWL6030_BASEADD_RTC … #define TWL6030_BASEADD_SECURED_REG … #define TWL6030_BASEADD_PM_MASTER … #define TWL6030_BASEADD_PM_SLAVE_MISC … #define TWL6030_BASEADD_PM_MISC … #define TWL6030_BASEADD_PM_PUPD … /* subchip/slave 1 0x49 - FEATURE */ #define TWL6030_BASEADD_USB … #define TWL6030_BASEADD_GPADC_CTRL … #define TWL6030_BASEADD_AUX … #define TWL6030_BASEADD_PWM … #define TWL6030_BASEADD_GASGAUGE … #define TWL6030_BASEADD_PIH … #define TWL6032_BASEADD_CHARGER … #define TWL6030_BASEADD_CHARGER … #define TWL6030_BASEADD_LED … /* subchip/slave 2 0x4A - DFT */ #define TWL6030_BASEADD_DIEID … /* subchip/slave 3 0x4B - AUDIO */ #define TWL6030_BASEADD_AUDIO … #define TWL6030_BASEADD_RSV … #define TWL6030_BASEADD_ZERO … /* Some fields in TWL6030_PHOENIX_DEV_ON */ #define TWL6030_APP_DEVOFF … #define TWL6030_CON_DEVOFF … #define TWL6030_MOD_DEVOFF … /* Few power values */ #define R_CFG_BOOT … /* some fields in R_CFG_BOOT */ #define HFCLK_FREQ_19p2_MHZ … #define HFCLK_FREQ_26_MHZ … #define HFCLK_FREQ_38p4_MHZ … #define HIGH_PERF_SQ … #define CK32K_LOWPWR_EN … /*----------------------------------------------------------------------*/ /* Structure for each TWL4030/TWL6030 Slave */ struct twl_client { … }; /* mapping the module id to slave id and base address */ struct twl_mapping { … }; struct twl_private { … }; static struct twl_private *twl_priv; static struct twl_mapping twl4030_map[] = …; static const struct reg_default twl4030_49_defaults[] = …; static bool twl4030_49_nop_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_range twl4030_49_volatile_ranges[] = …; static const struct regmap_access_table twl4030_49_volatile_table = …; static const struct regmap_config twl4030_regmap_config[4] = …; static struct twl_mapping twl6030_map[] = …; static const struct regmap_config twl6030_regmap_config[3] = …; /*----------------------------------------------------------------------*/ static inline int twl_get_num_slaves(void) { … } static inline int twl_get_last_module(void) { … } /* Exported Functions */ unsigned int twl_rev(void) { … } EXPORT_SYMBOL(…); /** * twl_get_regmap - Get the regmap associated with the given module * @mod_no: module number * * Returns the regmap pointer or NULL in case of failure. */ static struct regmap *twl_get_regmap(u8 mod_no) { … } /** * twl_i2c_write - Writes a n bit register in TWL4030/TWL5030/TWL60X0 * @mod_no: module number * @value: an array of num_bytes+1 containing data to write * @reg: register address (just offset will do) * @num_bytes: number of bytes to transfer * * Returns 0 on success or else a negative error code. */ int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) { … } EXPORT_SYMBOL(…); /** * twl_i2c_read - Reads a n bit register in TWL4030/TWL5030/TWL60X0 * @mod_no: module number * @value: an array of num_bytes containing data to be read * @reg: register address (just offset will do) * @num_bytes: number of bytes to transfer * * Returns 0 on success or else a negative error code. */ int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) { … } EXPORT_SYMBOL(…); /** * twl_set_regcache_bypass - Configure the regcache bypass for the regmap associated * with the module * @mod_no: module number * @enable: Regcache bypass state * * Returns 0 else failure. */ int twl_set_regcache_bypass(u8 mod_no, bool enable) { … } EXPORT_SYMBOL(…); /*----------------------------------------------------------------------*/ /** * twl_read_idcode_register - API to read the IDCODE register. * * Unlocks the IDCODE register and read the 32 bit value. */ static int twl_read_idcode_register(void) { … } /** * twl_get_type - API to get TWL Si type. * * Api to get the TWL Si type from IDCODE value. */ int twl_get_type(void) { … } EXPORT_SYMBOL_GPL(…); /** * twl_get_version - API to get TWL Si version. * * Api to get the TWL Si version from IDCODE value. */ int twl_get_version(void) { … } EXPORT_SYMBOL_GPL(…); /** * twl_get_hfclk_rate - API to get TWL external HFCLK clock rate. * * Api to get the TWL HFCLK rate based on BOOT_CFG register. */ int twl_get_hfclk_rate(void) { … } EXPORT_SYMBOL_GPL(…); /*----------------------------------------------------------------------*/ /* * These three functions initialize the on-chip clock framework, * letting it generate the right frequencies for USB, MADC, and * other purposes. */ static inline int protect_pm_master(void) { … } static inline int unprotect_pm_master(void) { … } static void clocks_init(struct device *dev) { … } /*----------------------------------------------------------------------*/ static void twl_remove(struct i2c_client *client) { … } static void twl6030_power_off(void) { … } static struct of_dev_auxdata twl_auxdata_lookup[] = …; static const struct mfd_cell twl6032_cells[] = …; /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ static int twl_probe(struct i2c_client *client) { … } static int __maybe_unused twl_suspend(struct device *dev) { … } static int __maybe_unused twl_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(twl_dev_pm_ops, twl_suspend, twl_resume); static const struct i2c_device_id twl_ids[] = …; /* One Client Driver , 4 Clients */ static struct i2c_driver twl_driver = …; builtin_i2c_driver(…) …;
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