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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 | /* * tps65910.c -- TI TPS6591x * * Copyright 2010 Texas Instruments Inc. * * Author: Graeme Gregory <gg@slimlogic.co.uk> * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk> * * 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. * */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> #include <linux/err.h> #include <linux/slab.h> #include <linux/i2c.h> #include <linux/gpio.h> #include <linux/mfd/core.h> #include <linux/regmap.h> #include <linux/mfd/tps65910.h> static struct mfd_cell tps65910s[] = { { .name = "tps65910-pmic", }, { .name = "tps65910-rtc", }, { .name = "tps65910-power", }, }; static int tps65910_i2c_read(struct tps65910 *tps65910, u8 reg, int bytes, void *dest) { return regmap_bulk_read(tps65910->regmap, reg, dest, bytes); } static int tps65910_i2c_write(struct tps65910 *tps65910, u8 reg, int bytes, void *src) { return regmap_bulk_write(tps65910->regmap, reg, src, bytes); } int tps65910_set_bits(struct tps65910 *tps65910, u8 reg, u8 mask) { return regmap_update_bits(tps65910->regmap, reg, mask, mask); } EXPORT_SYMBOL_GPL(tps65910_set_bits); int tps65910_clear_bits(struct tps65910 *tps65910, u8 reg, u8 mask) { return regmap_update_bits(tps65910->regmap, reg, mask, 0); } EXPORT_SYMBOL_GPL(tps65910_clear_bits); static bool is_volatile_reg(struct device *dev, unsigned int reg) { struct tps65910 *tps65910 = dev_get_drvdata(dev); /* * Caching all regulator registers. * All regualator register address range is same for * TPS65910 and TPS65911 */ if ((reg >= TPS65910_VIO) && (reg <= TPS65910_VDAC)) { /* Check for non-existing register */ if (tps65910_chip_id(tps65910) == TPS65910) if ((reg == TPS65911_VDDCTRL_OP) || (reg == TPS65911_VDDCTRL_SR)) return true; return false; } return true; } static const struct regmap_config tps65910_regmap_config = { .reg_bits = 8, .val_bits = 8, .volatile_reg = is_volatile_reg, .max_register = TPS65910_MAX_REGISTER, .num_reg_defaults_raw = TPS65910_MAX_REGISTER, .cache_type = REGCACHE_RBTREE, }; static int tps65910_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct tps65910 *tps65910; struct tps65910_board *pmic_plat_data; struct tps65910_platform_data *init_data; int ret = 0; pmic_plat_data = dev_get_platdata(&i2c->dev); if (!pmic_plat_data) return -EINVAL; init_data = kzalloc(sizeof(struct tps65910_platform_data), GFP_KERNEL); if (init_data == NULL) return -ENOMEM; tps65910 = kzalloc(sizeof(struct tps65910), GFP_KERNEL); if (tps65910 == NULL) { kfree(init_data); return -ENOMEM; } i2c_set_clientdata(i2c, tps65910); tps65910->dev = &i2c->dev; tps65910->i2c_client = i2c; tps65910->id = id->driver_data; tps65910->read = tps65910_i2c_read; tps65910->write = tps65910_i2c_write; mutex_init(&tps65910->io_mutex); tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config); if (IS_ERR(tps65910->regmap)) { ret = PTR_ERR(tps65910->regmap); dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret); goto regmap_err; } ret = mfd_add_devices(tps65910->dev, -1, tps65910s, ARRAY_SIZE(tps65910s), NULL, 0); if (ret < 0) goto err; init_data->irq = pmic_plat_data->irq; init_data->irq_base = pmic_plat_data->irq_base; tps65910_gpio_init(tps65910, pmic_plat_data->gpio_base); tps65910_irq_init(tps65910, init_data->irq, init_data); kfree(init_data); return ret; err: regmap_exit(tps65910->regmap); regmap_err: kfree(tps65910); kfree(init_data); return ret; } static int tps65910_i2c_remove(struct i2c_client *i2c) { struct tps65910 *tps65910 = i2c_get_clientdata(i2c); tps65910_irq_exit(tps65910); mfd_remove_devices(tps65910->dev); regmap_exit(tps65910->regmap); kfree(tps65910); return 0; } static const struct i2c_device_id tps65910_i2c_id[] = { { "tps65910", TPS65910 }, { "tps65911", TPS65911 }, { } }; MODULE_DEVICE_TABLE(i2c, tps65910_i2c_id); static struct i2c_driver tps65910_i2c_driver = { .driver = { .name = "tps65910", .owner = THIS_MODULE, }, .probe = tps65910_i2c_probe, .remove = tps65910_i2c_remove, .id_table = tps65910_i2c_id, }; static int __init tps65910_i2c_init(void) { return i2c_add_driver(&tps65910_i2c_driver); } /* init early so consumer devices can complete system boot */ subsys_initcall(tps65910_i2c_init); static void __exit tps65910_i2c_exit(void) { i2c_del_driver(&tps65910_i2c_driver); } module_exit(tps65910_i2c_exit); MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>"); MODULE_AUTHOR("Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>"); MODULE_DESCRIPTION("TPS6591x chip family multi-function driver"); MODULE_LICENSE("GPL"); |