2 * tps65910.c -- TI TPS6591x
4 * Copyright 2010 Texas Instruments Inc.
6 * Author: Graeme Gregory <gg@slimlogic.co.uk>
7 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/init.h>
19 #include <linux/err.h>
20 #include <linux/slab.h>
21 #include <linux/i2c.h>
22 #include <linux/gpio.h>
23 #include <linux/mfd/core.h>
24 #include <linux/regmap.h>
25 #include <linux/mfd/tps65910.h>
27 static struct mfd_cell tps65910s[] = {
29 .name = "tps65910-pmic",
32 .name = "tps65910-rtc",
35 .name = "tps65910-power",
40 static int tps65910_i2c_read(struct tps65910 *tps65910, u8 reg,
41 int bytes, void *dest)
43 return regmap_bulk_read(tps65910->regmap, reg, dest, bytes);
46 static int tps65910_i2c_write(struct tps65910 *tps65910, u8 reg,
49 return regmap_bulk_write(tps65910->regmap, reg, src, bytes);
52 int tps65910_set_bits(struct tps65910 *tps65910, u8 reg, u8 mask)
54 return regmap_update_bits(tps65910->regmap, reg, mask, mask);
56 EXPORT_SYMBOL_GPL(tps65910_set_bits);
58 int tps65910_clear_bits(struct tps65910 *tps65910, u8 reg, u8 mask)
60 return regmap_update_bits(tps65910->regmap, reg, mask, 0);
62 EXPORT_SYMBOL_GPL(tps65910_clear_bits);
64 static bool is_volatile_reg(struct device *dev, unsigned int reg)
66 struct tps65910 *tps65910 = dev_get_drvdata(dev);
69 * Caching all regulator registers.
70 * All regualator register address range is same for
71 * TPS65910 and TPS65911
73 if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) {
74 /* Check for non-existing register */
75 if (tps65910_chip_id(tps65910) == TPS65910)
76 if ((reg == TPS65911_VDDCTRL_OP) ||
77 (reg == TPS65911_VDDCTRL_SR))
84 static const struct regmap_config tps65910_regmap_config = {
87 .volatile_reg = is_volatile_reg,
88 .max_register = TPS65910_MAX_REGISTER,
89 .num_reg_defaults_raw = TPS65910_MAX_REGISTER,
90 .cache_type = REGCACHE_RBTREE,
93 static int __init tps65910_sleepinit(struct tps65910 *tps65910,
94 struct tps65910_board *pmic_pdata)
96 struct device *dev = NULL;
101 if (!pmic_pdata->en_dev_slp)
104 /* enabling SLEEP device state */
105 ret = tps65910_set_bits(tps65910, TPS65910_DEVCTRL,
106 DEVCTRL_DEV_SLP_MASK);
108 dev_err(dev, "set dev_slp failed: %d\n", ret);
112 /* Return if there is no sleep keepon data. */
113 if (!pmic_pdata->slp_keepon)
116 if (pmic_pdata->slp_keepon->therm_keepon) {
117 ret = tps65910_set_bits(tps65910, TPS65910_SLEEP_KEEP_RES_ON,
118 SLEEP_KEEP_RES_ON_THERM_KEEPON_MASK);
120 dev_err(dev, "set therm_keepon failed: %d\n", ret);
121 goto disable_dev_slp;
125 if (pmic_pdata->slp_keepon->clkout32k_keepon) {
126 ret = tps65910_set_bits(tps65910, TPS65910_SLEEP_KEEP_RES_ON,
127 SLEEP_KEEP_RES_ON_CLKOUT32K_KEEPON_MASK);
129 dev_err(dev, "set clkout32k_keepon failed: %d\n", ret);
130 goto disable_dev_slp;
134 if (pmic_pdata->slp_keepon->i2chs_keepon) {
135 ret = tps65910_set_bits(tps65910, TPS65910_SLEEP_KEEP_RES_ON,
136 SLEEP_KEEP_RES_ON_I2CHS_KEEPON_MASK);
138 dev_err(dev, "set i2chs_keepon failed: %d\n", ret);
139 goto disable_dev_slp;
146 tps65910_clear_bits(tps65910, TPS65910_DEVCTRL, DEVCTRL_DEV_SLP_MASK);
153 static int tps65910_i2c_probe(struct i2c_client *i2c,
154 const struct i2c_device_id *id)
156 struct tps65910 *tps65910;
157 struct tps65910_board *pmic_plat_data;
158 struct tps65910_platform_data *init_data;
161 pmic_plat_data = dev_get_platdata(&i2c->dev);
165 init_data = kzalloc(sizeof(struct tps65910_platform_data), GFP_KERNEL);
166 if (init_data == NULL)
169 tps65910 = kzalloc(sizeof(struct tps65910), GFP_KERNEL);
170 if (tps65910 == NULL) {
175 i2c_set_clientdata(i2c, tps65910);
176 tps65910->dev = &i2c->dev;
177 tps65910->i2c_client = i2c;
178 tps65910->id = id->driver_data;
179 tps65910->read = tps65910_i2c_read;
180 tps65910->write = tps65910_i2c_write;
181 mutex_init(&tps65910->io_mutex);
183 tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config);
184 if (IS_ERR(tps65910->regmap)) {
185 ret = PTR_ERR(tps65910->regmap);
186 dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
190 ret = mfd_add_devices(tps65910->dev, -1,
191 tps65910s, ARRAY_SIZE(tps65910s),
196 init_data->irq = pmic_plat_data->irq;
197 init_data->irq_base = pmic_plat_data->irq_base;
199 tps65910_gpio_init(tps65910, pmic_plat_data->gpio_base);
201 tps65910_irq_init(tps65910, init_data->irq, init_data);
203 tps65910_sleepinit(tps65910, pmic_plat_data);
209 regmap_exit(tps65910->regmap);
216 static int tps65910_i2c_remove(struct i2c_client *i2c)
218 struct tps65910 *tps65910 = i2c_get_clientdata(i2c);
220 tps65910_irq_exit(tps65910);
221 mfd_remove_devices(tps65910->dev);
222 regmap_exit(tps65910->regmap);
228 static const struct i2c_device_id tps65910_i2c_id[] = {
229 { "tps65910", TPS65910 },
230 { "tps65911", TPS65911 },
233 MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id);
236 static struct i2c_driver tps65910_i2c_driver = {
239 .owner = THIS_MODULE,
241 .probe = tps65910_i2c_probe,
242 .remove = tps65910_i2c_remove,
243 .id_table = tps65910_i2c_id,
246 static int __init tps65910_i2c_init(void)
248 return i2c_add_driver(&tps65910_i2c_driver);
250 /* init early so consumer devices can complete system boot */
251 subsys_initcall(tps65910_i2c_init);
253 static void __exit tps65910_i2c_exit(void)
255 i2c_del_driver(&tps65910_i2c_driver);
257 module_exit(tps65910_i2c_exit);
259 MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
260 MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>");
261 MODULE_DESCRIPTION("TPS6591x chip family multi-function driver");
262 MODULE_LICENSE("GPL");