| /* |
| * 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 <kai.svahn@nokia.com> |
| * |
| * Code cleanup and modifications to IRQ handler. |
| * by syed khasim <x0khasim@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #include <linux/init.h> |
| #include <linux/mutex.h> |
| #include <linux/module.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/i2c/twl.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 "twl" |
| |
| /* Triton Core internal information (BEGIN) */ |
| |
| /* Base Address defns for twl4030_map[] */ |
| |
| /* subchip/slave 0 - USB ID */ |
| #define TWL4030_BASEADD_USB 0x0000 |
| |
| /* subchip/slave 1 - AUD ID */ |
| #define TWL4030_BASEADD_AUDIO_VOICE 0x0000 |
| #define TWL4030_BASEADD_GPIO 0x0098 |
| #define TWL4030_BASEADD_INTBR 0x0085 |
| #define TWL4030_BASEADD_PIH 0x0080 |
| #define TWL4030_BASEADD_TEST 0x004C |
| |
| /* subchip/slave 2 - AUX ID */ |
| #define TWL4030_BASEADD_INTERRUPTS 0x00B9 |
| #define TWL4030_BASEADD_LED 0x00EE |
| #define TWL4030_BASEADD_MADC 0x0000 |
| #define TWL4030_BASEADD_MAIN_CHARGE 0x0074 |
| #define TWL4030_BASEADD_PRECHARGE 0x00AA |
| #define TWL4030_BASEADD_PWM 0x00F8 |
| #define TWL4030_BASEADD_KEYPAD 0x00D2 |
| |
| #define TWL5031_BASEADD_ACCESSORY 0x0074 /* Replaces Main Charge */ |
| #define TWL5031_BASEADD_INTERRUPTS 0x00B9 /* Different than TWL4030's |
| one */ |
| |
| /* subchip/slave 3 - POWER ID */ |
| #define TWL4030_BASEADD_BACKUP 0x0014 |
| #define TWL4030_BASEADD_INT 0x002E |
| #define TWL4030_BASEADD_PM_MASTER 0x0036 |
| #define TWL4030_BASEADD_PM_RECEIVER 0x005B |
| #define TWL4030_BASEADD_RTC 0x001C |
| #define TWL4030_BASEADD_SECURED_REG 0x0000 |
| |
| /* Triton Core internal information (END) */ |
| |
| |
| /* subchip/slave 0 0x48 - POWER */ |
| #define TWL6030_BASEADD_RTC 0x0000 |
| #define TWL6030_BASEADD_SECURED_REG 0x0017 |
| #define TWL6030_BASEADD_PM_MASTER 0x001F |
| #define TWL6030_BASEADD_PM_SLAVE_MISC 0x0030 /* PM_RECEIVER */ |
| #define TWL6030_BASEADD_PM_MISC 0x00E2 |
| #define TWL6030_BASEADD_PM_PUPD 0x00F0 |
| |
| /* subchip/slave 1 0x49 - FEATURE */ |
| #define TWL6030_BASEADD_USB 0x0000 |
| #define TWL6030_BASEADD_GPADC_CTRL 0x002E |
| #define TWL6030_BASEADD_AUX 0x0090 |
| #define TWL6030_BASEADD_PWM 0x00BA |
| #define TWL6030_BASEADD_GASGAUGE 0x00C0 |
| #define TWL6030_BASEADD_PIH 0x00D0 |
| #define TWL6030_BASEADD_CHARGER 0x00E0 |
| #define TWL6032_BASEADD_CHARGER 0x00DA |
| #define TWL6030_BASEADD_LED 0x00F4 |
| |
| /* subchip/slave 2 0x4A - DFT */ |
| #define TWL6030_BASEADD_DIEID 0x00C0 |
| |
| /* subchip/slave 3 0x4B - AUDIO */ |
| #define TWL6030_BASEADD_AUDIO 0x0000 |
| #define TWL6030_BASEADD_RSV 0x0000 |
| #define TWL6030_BASEADD_ZERO 0x0000 |
| |
| /* Few power values */ |
| #define R_CFG_BOOT 0x05 |
| |
| /* some fields in R_CFG_BOOT */ |
| #define HFCLK_FREQ_19p2_MHZ (1 << 0) |
| #define HFCLK_FREQ_26_MHZ (2 << 0) |
| #define HFCLK_FREQ_38p4_MHZ (3 << 0) |
| #define HIGH_PERF_SQ (1 << 3) |
| #define CK32K_LOWPWR_EN (1 << 7) |
| |
| /*----------------------------------------------------------------------*/ |
| |
| /* Structure for each TWL4030/TWL6030 Slave */ |
| struct twl_client { |
| struct i2c_client *client; |
| struct regmap *regmap; |
| }; |
| |
| /* mapping the module id to slave id and base address */ |
| struct twl_mapping { |
| unsigned char sid; /* Slave ID */ |
| unsigned char base; /* base address */ |
| }; |
| |
| struct twl_private { |
| bool ready; /* The core driver is ready to be used */ |
| u32 twl_idcode; /* TWL IDCODE Register value */ |
| unsigned int twl_id; |
| |
| struct twl_mapping *twl_map; |
| struct twl_client *twl_modules; |
| }; |
| |
| static struct twl_private *twl_priv; |
| |
| static struct twl_mapping twl4030_map[] = { |
| /* |
| * NOTE: don't change this table without updating the |
| * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
| * so they continue to match the order in this table. |
| */ |
| |
| /* Common IPs */ |
| { 0, TWL4030_BASEADD_USB }, |
| { 1, TWL4030_BASEADD_PIH }, |
| { 2, TWL4030_BASEADD_MAIN_CHARGE }, |
| { 3, TWL4030_BASEADD_PM_MASTER }, |
| { 3, TWL4030_BASEADD_PM_RECEIVER }, |
| |
| { 3, TWL4030_BASEADD_RTC }, |
| { 2, TWL4030_BASEADD_PWM }, |
| { 2, TWL4030_BASEADD_LED }, |
| { 3, TWL4030_BASEADD_SECURED_REG }, |
| |
| /* TWL4030 specific IPs */ |
| { 1, TWL4030_BASEADD_AUDIO_VOICE }, |
| { 1, TWL4030_BASEADD_GPIO }, |
| { 1, TWL4030_BASEADD_INTBR }, |
| { 1, TWL4030_BASEADD_TEST }, |
| { 2, TWL4030_BASEADD_KEYPAD }, |
| |
| { 2, TWL4030_BASEADD_MADC }, |
| { 2, TWL4030_BASEADD_INTERRUPTS }, |
| { 2, TWL4030_BASEADD_PRECHARGE }, |
| { 3, TWL4030_BASEADD_BACKUP }, |
| { 3, TWL4030_BASEADD_INT }, |
| |
| { 2, TWL5031_BASEADD_ACCESSORY }, |
| { 2, TWL5031_BASEADD_INTERRUPTS }, |
| }; |
| |
| static struct regmap_config twl4030_regmap_config[4] = { |
| { |
| /* Address 0x48 */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| { |
| /* Address 0x49 */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| { |
| /* Address 0x4a */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| { |
| /* Address 0x4b */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| }; |
| |
| static struct twl_mapping twl6030_map[] = { |
| /* |
| * NOTE: don't change this table without updating the |
| * <linux/i2c/twl.h> defines for TWL4030_MODULE_* |
| * so they continue to match the order in this table. |
| */ |
| |
| /* Common IPs */ |
| { 1, TWL6030_BASEADD_USB }, |
| { 1, TWL6030_BASEADD_PIH }, |
| { 1, TWL6030_BASEADD_CHARGER }, |
| { 0, TWL6030_BASEADD_PM_MASTER }, |
| { 0, TWL6030_BASEADD_PM_SLAVE_MISC }, |
| |
| { 0, TWL6030_BASEADD_RTC }, |
| { 1, TWL6030_BASEADD_PWM }, |
| { 1, TWL6030_BASEADD_LED }, |
| { 0, TWL6030_BASEADD_SECURED_REG }, |
| |
| /* TWL6030 specific IPs */ |
| { 0, TWL6030_BASEADD_ZERO }, |
| { 1, TWL6030_BASEADD_ZERO }, |
| { 2, TWL6030_BASEADD_ZERO }, |
| { 1, TWL6030_BASEADD_GPADC_CTRL }, |
| { 1, TWL6030_BASEADD_GASGAUGE }, |
| }; |
| |
| static struct regmap_config twl6030_regmap_config[3] = { |
| { |
| /* Address 0x48 */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| { |
| /* Address 0x49 */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| { |
| /* Address 0x4a */ |
| .reg_bits = 8, |
| .val_bits = 8, |
| .max_register = 0xff, |
| }, |
| }; |
| |
| /*----------------------------------------------------------------------*/ |
| |
| static inline int twl_get_num_slaves(void) |
| { |
| if (twl_class_is_4030()) |
| return 4; /* TWL4030 class have four slave address */ |
| else |
| return 3; /* TWL6030 class have three slave address */ |
| } |
| |
| static inline int twl_get_last_module(void) |
| { |
| if (twl_class_is_4030()) |
| return TWL4030_MODULE_LAST; |
| else |
| return TWL6030_MODULE_LAST; |
| } |
| |
| /* Exported Functions */ |
| |
| unsigned int twl_rev(void) |
| { |
| return twl_priv ? twl_priv->twl_id : 0; |
| } |
| EXPORT_SYMBOL(twl_rev); |
| |
| /** |
| * 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 the result of operation - 0 is success |
| */ |
| int twl_i2c_write(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
| { |
| int ret; |
| int sid; |
| struct twl_client *twl; |
| |
| if (unlikely(!twl_priv || !twl_priv->ready)) { |
| pr_err("%s: not initialized\n", DRIVER_NAME); |
| return -EPERM; |
| } |
| if (unlikely(mod_no >= twl_get_last_module())) { |
| pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
| return -EPERM; |
| } |
| |
| sid = twl_priv->twl_map[mod_no].sid; |
| twl = &twl_priv->twl_modules[sid]; |
| |
| ret = regmap_bulk_write(twl->regmap, |
| twl_priv->twl_map[mod_no].base + reg, value, |
| num_bytes); |
| |
| if (ret) |
| pr_err("%s: Write failed (mod %d, reg 0x%02x count %d)\n", |
| DRIVER_NAME, mod_no, reg, num_bytes); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(twl_i2c_write); |
| |
| /** |
| * 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 result of operation - num_bytes is success else failure. |
| */ |
| int twl_i2c_read(u8 mod_no, u8 *value, u8 reg, unsigned num_bytes) |
| { |
| int ret; |
| int sid; |
| struct twl_client *twl; |
| |
| if (unlikely(!twl_priv || !twl_priv->ready)) { |
| pr_err("%s: not initialized\n", DRIVER_NAME); |
| return -EPERM; |
| } |
| if (unlikely(mod_no >= twl_get_last_module())) { |
| pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
| return -EPERM; |
| } |
| |
| sid = twl_priv->twl_map[mod_no].sid; |
| twl = &twl_priv->twl_modules[sid]; |
| |
| ret = regmap_bulk_read(twl->regmap, |
| twl_priv->twl_map[mod_no].base + reg, value, |
| num_bytes); |
| |
| if (ret) |
| pr_err("%s: Read failed (mod %d, reg 0x%02x count %d)\n", |
| DRIVER_NAME, mod_no, reg, num_bytes); |
| |
| return ret; |
| } |
| EXPORT_SYMBOL(twl_i2c_read); |
| |
| /*----------------------------------------------------------------------*/ |
| |
| /** |
| * 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) |
| { |
| int err; |
| |
| err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, TWL_EEPROM_R_UNLOCK, |
| REG_UNLOCK_TEST_REG); |
| if (err) { |
| pr_err("TWL4030 Unable to unlock IDCODE registers -%d\n", err); |
| goto fail; |
| } |
| |
| err = twl_i2c_read(TWL4030_MODULE_INTBR, (u8 *)(&twl_priv->twl_idcode), |
| REG_IDCODE_7_0, 4); |
| if (err) { |
| pr_err("TWL4030: unable to read IDCODE -%d\n", err); |
| goto fail; |
| } |
| |
| err = twl_i2c_write_u8(TWL4030_MODULE_INTBR, 0x0, REG_UNLOCK_TEST_REG); |
| if (err) |
| pr_err("TWL4030 Unable to relock IDCODE registers -%d\n", err); |
| fail: |
| return err; |
| } |
| |
| /** |
| * twl_get_type - API to get TWL Si type. |
| * |
| * Api to get the TWL Si type from IDCODE value. |
| */ |
| int twl_get_type(void) |
| { |
| return TWL_SIL_TYPE(twl_priv->twl_idcode); |
| } |
| EXPORT_SYMBOL_GPL(twl_get_type); |
| |
| /** |
| * twl_get_version - API to get TWL Si version. |
| * |
| * Api to get the TWL Si version from IDCODE value. |
| */ |
| int twl_get_version(void) |
| { |
| return TWL_SIL_REV(twl_priv->twl_idcode); |
| } |
| EXPORT_SYMBOL_GPL(twl_get_version); |
| |
| /** |
| * 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) |
| { |
| u8 ctrl; |
| int rate; |
| |
| twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &ctrl, R_CFG_BOOT); |
| |
| switch (ctrl & 0x3) { |
| case HFCLK_FREQ_19p2_MHZ: |
| rate = 19200000; |
| break; |
| case HFCLK_FREQ_26_MHZ: |
| rate = 26000000; |
| break; |
| case HFCLK_FREQ_38p4_MHZ: |
| rate = 38400000; |
| break; |
| default: |
| pr_err("TWL4030: HFCLK is not configured\n"); |
| rate = -EINVAL; |
| break; |
| } |
| |
| return rate; |
| } |
| EXPORT_SYMBOL_GPL(twl_get_hfclk_rate); |
| |
| static struct device * |
| add_numbered_child(unsigned mod_no, const char *name, int num, |
| void *pdata, unsigned pdata_len, |
| bool can_wakeup, int irq0, int irq1) |
| { |
| struct platform_device *pdev; |
| struct twl_client *twl; |
| int status, sid; |
| |
| if (unlikely(mod_no >= twl_get_last_module())) { |
| pr_err("%s: invalid module number %d\n", DRIVER_NAME, mod_no); |
| return ERR_PTR(-EPERM); |
| } |
| sid = twl_priv->twl_map[mod_no].sid; |
| twl = &twl_priv->twl_modules[sid]; |
| |
| pdev = platform_device_alloc(name, num); |
| if (!pdev) { |
| dev_dbg(&twl->client->dev, "can't alloc dev\n"); |
| status = -ENOMEM; |
| goto err; |
| } |
| |
| pdev->dev.parent = &twl->client->dev; |
| |
| if (pdata) { |
| status = platform_device_add_data(pdev, pdata, pdata_len); |
| if (status < 0) { |
| dev_dbg(&pdev->dev, "can't add platform_data\n"); |
| goto err; |
| } |
| } |
| |
| if (irq0) { |
| struct resource r[2] = { |
| { .start = irq0, .flags = IORESOURCE_IRQ, }, |
| { .start = irq1, .flags = IORESOURCE_IRQ, }, |
| }; |
| |
| status = platform_device_add_resources(pdev, r, irq1 ? 2 : 1); |
| if (status < 0) { |
| dev_dbg(&pdev->dev, "can't add irqs\n"); |
| goto err; |
| } |
| } |
| |
| status = platform_device_add(pdev); |
| if (status == 0) |
| device_init_wakeup(&pdev->dev, can_wakeup); |
| |
| err: |
| if (status < 0) { |
| platform_device_put(pdev); |
| dev_err(&twl->client->dev, "can't add %s dev\n", name); |
| return ERR_PTR(status); |
| } |
| return &pdev->dev; |
| } |
| |
| static inline struct device *add_child(unsigned mod_no, const char *name, |
| void *pdata, unsigned pdata_len, |
| bool can_wakeup, int irq0, int irq1) |
| { |
| return add_numbered_child(mod_no, name, -1, pdata, pdata_len, |
| can_wakeup, irq0, irq1); |
| } |
| |
| static struct device * |
| add_regulator_linked(int num, struct regulator_init_data *pdata, |
| struct regulator_consumer_supply *consumers, |
| unsigned num_consumers, unsigned long features) |
| { |
| struct twl_regulator_driver_data drv_data; |
| |
| /* regulator framework demands init_data ... */ |
| if (!pdata) |
| return NULL; |
| |
| if (consumers) { |
| pdata->consumer_supplies = consumers; |
| pdata->num_consumer_supplies = num_consumers; |
| } |
| |
| if (pdata->driver_data) { |
| /* If we have existing drv_data, just add the flags */ |
| struct twl_regulator_driver_data *tmp; |
| tmp = pdata->driver_data; |
| tmp->features |= features; |
| } else { |
| /* add new driver data struct, used only during init */ |
| drv_data.features = features; |
| drv_data.set_voltage = NULL; |
| drv_data.get_voltage = NULL; |
| drv_data.data = NULL; |
| pdata->driver_data = &drv_data; |
| } |
| |
| /* NOTE: we currently ignore regulator IRQs, e.g. for short circuits */ |
| return add_numbered_child(TWL_MODULE_PM_MASTER, "twl_reg", num, |
| pdata, sizeof(*pdata), false, 0, 0); |
| } |
| |
| static struct device * |
| add_regulator(int num, struct regulator_init_data *pdata, |
| unsigned long features) |
| { |
| return add_regulator_linked(num, pdata, NULL, 0, features); |
| } |
| |
| /* |
| * NOTE: We know the first 8 IRQs after pdata->base_irq are |
| * for the PIH, and the next are for the PWR_INT SIH, since |
| * that's how twl_init_irq() sets things up. |
| */ |
| |
| static int |
| add_children(struct twl4030_platform_data *pdata, unsigned irq_base, |
| unsigned long features) |
| { |
| struct device *child; |
| |
| if (IS_ENABLED(CONFIG_GPIO_TWL4030) && pdata->gpio) { |
| child = add_child(TWL4030_MODULE_GPIO, "twl4030_gpio", |
| pdata->gpio, sizeof(*pdata->gpio), |
| false, irq_base + GPIO_INTR_OFFSET, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_KEYBOARD_TWL4030) && pdata->keypad) { |
| child = add_child(TWL4030_MODULE_KEYPAD, "twl4030_keypad", |
| pdata->keypad, sizeof(*pdata->keypad), |
| true, irq_base + KEYPAD_INTR_OFFSET, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_TWL4030_MADC) && pdata->madc && |
| twl_class_is_4030()) { |
| child = add_child(TWL4030_MODULE_MADC, "twl4030_madc", |
| pdata->madc, sizeof(*pdata->madc), |
| true, irq_base + MADC_INTR_OFFSET, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_RTC_DRV_TWL4030)) { |
| /* |
| * REVISIT platform_data here currently might expose the |
| * "msecure" line ... but for now we just expect board |
| * setup to tell the chip "it's always ok to SET_TIME". |
| * Eventually, Linux might become more aware of such |
| * HW security concerns, and "least privilege". |
| */ |
| child = add_child(TWL_MODULE_RTC, "twl_rtc", NULL, 0, |
| true, irq_base + RTC_INTR_OFFSET, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_PWM_TWL)) { |
| child = add_child(TWL_MODULE_PWM, "twl-pwm", NULL, 0, |
| false, 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_PWM_TWL_LED)) { |
| child = add_child(TWL_MODULE_LED, "twl-pwmled", NULL, 0, |
| false, 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_TWL4030_USB) && pdata->usb && |
| twl_class_is_4030()) { |
| |
| static struct regulator_consumer_supply usb1v5 = { |
| .supply = "usb1v5", |
| }; |
| static struct regulator_consumer_supply usb1v8 = { |
| .supply = "usb1v8", |
| }; |
| static struct regulator_consumer_supply usb3v1[] = { |
| { .supply = "usb3v1" }, |
| { .supply = "bci3v1" }, |
| }; |
| |
| /* First add the regulators so that they can be used by transceiver */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { |
| /* this is a template that gets copied */ |
| struct regulator_init_data usb_fixed = { |
| .constraints.valid_modes_mask = |
| REGULATOR_MODE_NORMAL |
| | REGULATOR_MODE_STANDBY, |
| .constraints.valid_ops_mask = |
| REGULATOR_CHANGE_MODE |
| | REGULATOR_CHANGE_STATUS, |
| }; |
| |
| child = add_regulator_linked(TWL4030_REG_VUSB1V5, |
| &usb_fixed, &usb1v5, 1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator_linked(TWL4030_REG_VUSB1V8, |
| &usb_fixed, &usb1v8, 1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator_linked(TWL4030_REG_VUSB3V1, |
| &usb_fixed, usb3v1, 2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| } |
| |
| child = add_child(TWL_MODULE_USB, "twl4030_usb", |
| pdata->usb, sizeof(*pdata->usb), true, |
| /* irq0 = USB_PRES, irq1 = USB */ |
| irq_base + USB_PRES_INTR_OFFSET, |
| irq_base + USB_INTR_OFFSET); |
| |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| /* we need to connect regulators to this transceiver */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) { |
| usb1v5.dev_name = dev_name(child); |
| usb1v8.dev_name = dev_name(child); |
| usb3v1[0].dev_name = dev_name(child); |
| } |
| } |
| if (IS_ENABLED(CONFIG_TWL6030_USB) && pdata->usb && |
| twl_class_is_6030()) { |
| |
| static struct regulator_consumer_supply usb3v3; |
| int regulator; |
| |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030)) { |
| /* this is a template that gets copied */ |
| struct regulator_init_data usb_fixed = { |
| .constraints.valid_modes_mask = |
| REGULATOR_MODE_NORMAL |
| | REGULATOR_MODE_STANDBY, |
| .constraints.valid_ops_mask = |
| REGULATOR_CHANGE_MODE |
| | REGULATOR_CHANGE_STATUS, |
| }; |
| |
| if (features & TWL6032_SUBCLASS) { |
| usb3v3.supply = "ldousb"; |
| regulator = TWL6032_REG_LDOUSB; |
| } else { |
| usb3v3.supply = "vusb"; |
| regulator = TWL6030_REG_VUSB; |
| } |
| child = add_regulator_linked(regulator, &usb_fixed, |
| &usb3v3, 1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| pdata->usb->features = features; |
| |
| child = add_child(TWL_MODULE_USB, "twl6030_usb", |
| pdata->usb, sizeof(*pdata->usb), true, |
| /* irq1 = VBUS_PRES, irq0 = USB ID */ |
| irq_base + USBOTG_INTR_OFFSET, |
| irq_base + USB_PRES_INTR_OFFSET); |
| |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| /* we need to connect regulators to this transceiver */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && child) |
| usb3v3.dev_name = dev_name(child); |
| } else if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && |
| twl_class_is_6030()) { |
| if (features & TWL6032_SUBCLASS) |
| child = add_regulator(TWL6032_REG_LDOUSB, |
| pdata->ldousb, features); |
| else |
| child = add_regulator(TWL6030_REG_VUSB, |
| pdata->vusb, features); |
| |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_TWL4030_WATCHDOG) && twl_class_is_4030()) { |
| child = add_child(TWL_MODULE_PM_RECEIVER, "twl4030_wdt", NULL, |
| 0, false, 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_INPUT_TWL4030_PWRBUTTON) && twl_class_is_4030()) { |
| child = add_child(TWL_MODULE_PM_MASTER, "twl4030_pwrbutton", |
| NULL, 0, true, irq_base + 8 + 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_MFD_TWL4030_AUDIO) && pdata->audio && |
| twl_class_is_4030()) { |
| child = add_child(TWL4030_MODULE_AUDIO_VOICE, "twl4030-audio", |
| pdata->audio, sizeof(*pdata->audio), |
| false, 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| /* twl4030 regulators */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_4030()) { |
| child = add_regulator(TWL4030_REG_VPLL1, pdata->vpll1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VIO, pdata->vio, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VDD1, pdata->vdd1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VDD2, pdata->vdd2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VMMC1, pdata->vmmc1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VDAC, pdata->vdac, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator((features & TWL4030_VAUX2) |
| ? TWL4030_REG_VAUX2_4030 |
| : TWL4030_REG_VAUX2, |
| pdata->vaux2, features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VINTANA1, pdata->vintana1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VINTANA2, pdata->vintana2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VINTDIG, pdata->vintdig, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| /* maybe add LDOs that are omitted on cost-reduced parts */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && !(features & TPS_SUBSET) |
| && twl_class_is_4030()) { |
| child = add_regulator(TWL4030_REG_VPLL2, pdata->vpll2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VMMC2, pdata->vmmc2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VSIM, pdata->vsim, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VAUX1, pdata->vaux1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VAUX3, pdata->vaux3, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL4030_REG_VAUX4, pdata->vaux4, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| /* twl6030 regulators */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() && |
| !(features & TWL6032_SUBCLASS)) { |
| child = add_regulator(TWL6030_REG_VDD1, pdata->vdd1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VDD2, pdata->vdd2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VDD3, pdata->vdd3, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_V1V8, pdata->v1v8, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_V2V1, pdata->v2v1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VMMC, pdata->vmmc, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VPP, pdata->vpp, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VUSIM, pdata->vusim, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VCXIO, pdata->vcxio, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VDAC, pdata->vdac, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VAUX1_6030, pdata->vaux1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VAUX2_6030, pdata->vaux2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_VAUX3_6030, pdata->vaux3, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6030_REG_CLK32KG, pdata->clk32kg, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| /* 6030 and 6025 share this regulator */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030()) { |
| child = add_regulator(TWL6030_REG_VANA, pdata->vana, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| /* twl6032 regulators */ |
| if (IS_ENABLED(CONFIG_REGULATOR_TWL4030) && twl_class_is_6030() && |
| (features & TWL6032_SUBCLASS)) { |
| child = add_regulator(TWL6032_REG_LDO5, pdata->ldo5, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO1, pdata->ldo1, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO7, pdata->ldo7, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO6, pdata->ldo6, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDOLN, pdata->ldoln, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO2, pdata->ldo2, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO4, pdata->ldo4, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_LDO3, pdata->ldo3, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_SMPS3, pdata->smps3, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_SMPS4, pdata->smps4, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| child = add_regulator(TWL6032_REG_VIO, pdata->vio6025, |
| features); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| |
| } |
| |
| if (IS_ENABLED(CONFIG_CHARGER_TWL4030) && pdata->bci && |
| !(features & (TPS_SUBSET | TWL5031))) { |
| child = add_child(TWL_MODULE_MAIN_CHARGE, "twl4030_bci", |
| pdata->bci, sizeof(*pdata->bci), false, |
| /* irq0 = CHG_PRES, irq1 = BCI */ |
| irq_base + BCI_PRES_INTR_OFFSET, |
| irq_base + BCI_INTR_OFFSET); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| if (IS_ENABLED(CONFIG_TWL4030_POWER) && pdata->power) { |
| child = add_child(TWL_MODULE_PM_MASTER, "twl4030_power", |
| pdata->power, sizeof(*pdata->power), false, |
| 0, 0); |
| if (IS_ERR(child)) |
| return PTR_ERR(child); |
| } |
| |
| return 0; |
| } |
| |
| /*----------------------------------------------------------------------*/ |
| |
| /* |
| * These three functions initialize the on-chip clock framework, |
| * letting it generate the right frequencies for USB, MADC, and |
| * other purposes. |
| */ |
| static inline int __init protect_pm_master(void) |
| { |
| int e = 0; |
| |
| e = twl_i2c_write_u8(TWL_MODULE_PM_MASTER, 0, |
| TWL4030_PM_MASTER_PROTECT_KEY); |
| return e; |
| } |
| |
| static inline int __init unprotect_pm_master(void) |
| { |
| int e = 0; |
| |
| e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG1, |
| TWL4030_PM_MASTER_PROTECT_KEY); |
| e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, TWL4030_PM_MASTER_KEY_CFG2, |
| TWL4030_PM_MASTER_PROTECT_KEY); |
| |
| return e; |
| } |
| |
| static void clocks_init(struct device *dev, |
| struct twl4030_clock_init_data *clock) |
| { |
| int e = 0; |
| struct clk *osc; |
| u32 rate; |
| u8 ctrl = HFCLK_FREQ_26_MHZ; |
| |
| osc = clk_get(dev, "fck"); |
| if (IS_ERR(osc)) { |
| printk(KERN_WARNING "Skipping twl internal clock init and " |
| "using bootloader value (unknown osc rate)\n"); |
| return; |
| } |
| |
| rate = clk_get_rate(osc); |
| clk_put(osc); |
| |
| switch (rate) { |
| case 19200000: |
| ctrl = HFCLK_FREQ_19p2_MHZ; |
| break; |
| case 26000000: |
| ctrl = HFCLK_FREQ_26_MHZ; |
| break; |
| case 38400000: |
| ctrl = HFCLK_FREQ_38p4_MHZ; |
| break; |
| } |
| |
| ctrl |= HIGH_PERF_SQ; |
| if (clock && clock->ck32k_lowpwr_enable) |
| ctrl |= CK32K_LOWPWR_EN; |
| |
| e |= unprotect_pm_master(); |
| /* effect->MADC+USB ck en */ |
| e |= twl_i2c_write_u8(TWL_MODULE_PM_MASTER, ctrl, R_CFG_BOOT); |
| e |= protect_pm_master(); |
| |
| if (e < 0) |
| pr_err("%s: clock init err [%d]\n", DRIVER_NAME, e); |
| } |
| |
| /*----------------------------------------------------------------------*/ |
| |
| |
| static int twl_remove(struct i2c_client *client) |
| { |
| unsigned i, num_slaves; |
| int status; |
| |
| if (twl_class_is_4030()) |
| status = twl4030_exit_irq(); |
| else |
| status = twl6030_exit_irq(); |
| |
| if (status < 0) |
| return status; |
| |
| num_slaves = twl_get_num_slaves(); |
| for (i = 0; i < num_slaves; i++) { |
| struct twl_client *twl = &twl_priv->twl_modules[i]; |
| |
| if (twl->client && twl->client != client) |
| i2c_unregister_device(twl->client); |
| twl->client = NULL; |
| } |
| twl_priv->ready = false; |
| return 0; |
| } |
| |
| static struct of_dev_auxdata twl_auxdata_lookup[] = { |
| OF_DEV_AUXDATA("ti,twl4030-gpio", 0, "twl4030-gpio", NULL), |
| { /* sentinel */ }, |
| }; |
| |
| /* NOTE: This driver only handles a single twl4030/tps659x0 chip */ |
| static int |
| twl_probe(struct i2c_client *client, const struct i2c_device_id *id) |
| { |
| struct twl4030_platform_data *pdata = dev_get_platdata(&client->dev); |
| struct device_node *node = client->dev.of_node; |
| struct platform_device *pdev; |
| struct regmap_config *twl_regmap_config; |
| int irq_base = 0; |
| int status; |
| unsigned i, num_slaves; |
| |
| if (!node && !pdata) { |
| dev_err(&client->dev, "no platform data\n"); |
| return -EINVAL; |
| } |
| |
| if (twl_priv) { |
| dev_dbg(&client->dev, "only one instance of %s allowed\n", |
| DRIVER_NAME); |
| return -EBUSY; |
| } |
| |
| pdev = platform_device_alloc(DRIVER_NAME, -1); |
| if (!pdev) { |
| dev_err(&client->dev, "can't alloc pdev\n"); |
| return -ENOMEM; |
| } |
| |
| status = platform_device_add(pdev); |
| if (status) { |
| platform_device_put(pdev); |
| return status; |
| } |
| |
| if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) == 0) { |
| dev_dbg(&client->dev, "can't talk I2C?\n"); |
| status = -EIO; |
| goto free; |
| } |
| |
| twl_priv = devm_kzalloc(&client->dev, sizeof(struct twl_private), |
| GFP_KERNEL); |
| if (!twl_priv) { |
| status = -ENOMEM; |
| goto free; |
| } |
| |
| if ((id->driver_data) & TWL6030_CLASS) { |
| twl_priv->twl_id = TWL6030_CLASS_ID; |
| twl_priv->twl_map = &twl6030_map[0]; |
| /* The charger base address is different in twl6032 */ |
| if ((id->driver_data) & TWL6032_SUBCLASS) |
| twl_priv->twl_map[TWL_MODULE_MAIN_CHARGE].base = |
| TWL6032_BASEADD_CHARGER; |
| twl_regmap_config = twl6030_regmap_config; |
| } else { |
| twl_priv->twl_id = TWL4030_CLASS_ID; |
| twl_priv->twl_map = &twl4030_map[0]; |
| twl_regmap_config = twl4030_regmap_config; |
| } |
| |
| num_slaves = twl_get_num_slaves(); |
| twl_priv->twl_modules = devm_kzalloc(&client->dev, |
| sizeof(struct twl_client) * num_slaves, |
| GFP_KERNEL); |
| if (!twl_priv->twl_modules) { |
| status = -ENOMEM; |
| goto free; |
| } |
| |
| for (i = 0; i < num_slaves; i++) { |
| struct twl_client *twl = &twl_priv->twl_modules[i]; |
| |
| if (i == 0) { |
| twl->client = client; |
| } else { |
| twl->client = i2c_new_dummy(client->adapter, |
| client->addr + i); |
| if (!twl->client) { |
| dev_err(&client->dev, |
| "can't attach client %d\n", i); |
| status = -ENOMEM; |
| goto fail; |
| } |
| } |
| |
| twl->regmap = devm_regmap_init_i2c(twl->client, |
| &twl_regmap_config[i]); |
| if (IS_ERR(twl->regmap)) { |
| status = PTR_ERR(twl->regmap); |
| dev_err(&client->dev, |
| "Failed to allocate regmap %d, err: %d\n", i, |
| status); |
| goto fail; |
| } |
| } |
| |
| twl_priv->ready = true; |
| |
| /* setup clock framework */ |
| clocks_init(&pdev->dev, pdata ? pdata->clock : NULL); |
| |
| /* read TWL IDCODE Register */ |
| if (twl_class_is_4030()) { |
| status = twl_read_idcode_register(); |
| WARN(status < 0, "Error: reading twl_idcode register value\n"); |
| } |
| |
| /* Maybe init the T2 Interrupt subsystem */ |
| if (client->irq) { |
| if (twl_class_is_4030()) { |
| twl4030_init_chip_irq(id->name); |
| irq_base = twl4030_init_irq(&client->dev, client->irq); |
| } else { |
| irq_base = twl6030_init_irq(&client->dev, client->irq); |
| } |
| |
| if (irq_base < 0) { |
| status = irq_base; |
| goto fail; |
| } |
| } |
| |
| /* |
| * Disable TWL4030/TWL5030 I2C Pull-up on I2C1 and I2C4(SR) interface. |
| * Program I2C_SCL_CTRL_PU(bit 0)=0, I2C_SDA_CTRL_PU (bit 2)=0, |
| * SR_I2C_SCL_CTRL_PU(bit 4)=0 and SR_I2C_SDA_CTRL_PU(bit 6)=0. |
| */ |
| if (twl_class_is_4030()) { |
| u8 temp; |
| |
| twl_i2c_read_u8(TWL4030_MODULE_INTBR, &temp, REG_GPPUPDCTR1); |
| temp &= ~(SR_I2C_SDA_CTRL_PU | SR_I2C_SCL_CTRL_PU | \ |
| I2C_SDA_CTRL_PU | I2C_SCL_CTRL_PU); |
| twl_i2c_write_u8(TWL4030_MODULE_INTBR, temp, REG_GPPUPDCTR1); |
| } |
| |
| if (node) { |
| if (pdata) |
| twl_auxdata_lookup[0].platform_data = pdata->gpio; |
| status = of_platform_populate(node, NULL, twl_auxdata_lookup, |
| &client->dev); |
| } else { |
| status = add_children(pdata, irq_base, id->driver_data); |
| } |
| |
| fail: |
| if (status < 0) |
| twl_remove(client); |
| free: |
| if (status < 0) |
| platform_device_unregister(pdev); |
| |
| return status; |
| } |
| |
| static const struct i2c_device_id twl_ids[] = { |
| { "twl4030", TWL4030_VAUX2 }, /* "Triton 2" */ |
| { "twl5030", 0 }, /* T2 updated */ |
| { "twl5031", TWL5031 }, /* TWL5030 updated */ |
| { "tps65950", 0 }, /* catalog version of twl5030 */ |
| { "tps65930", TPS_SUBSET }, /* fewer LDOs and DACs; no charger */ |
| { "tps65920", TPS_SUBSET }, /* fewer LDOs; no codec or charger */ |
| { "tps65921", TPS_SUBSET }, /* fewer LDOs; no codec, no LED |
| and vibrator. Charger in USB module*/ |
| { "twl6030", TWL6030_CLASS }, /* "Phoenix power chip" */ |
| { "twl6032", TWL6030_CLASS | TWL6032_SUBCLASS }, /* "Phoenix lite" */ |
| { /* end of list */ }, |
| }; |
| MODULE_DEVICE_TABLE(i2c, twl_ids); |
| |
| /* One Client Driver , 4 Clients */ |
| static struct i2c_driver twl_driver = { |
| .driver.name = DRIVER_NAME, |
| .id_table = twl_ids, |
| .probe = twl_probe, |
| .remove = twl_remove, |
| }; |
| |
| module_i2c_driver(twl_driver); |
| |
| MODULE_AUTHOR("Texas Instruments, Inc."); |
| MODULE_DESCRIPTION("I2C Core interface for TWL"); |
| MODULE_LICENSE("GPL"); |