1 /* I2C access for DA9055 PMICs. 2 * 3 * Copyright(c) 2012 Dialog Semiconductor Ltd. 4 * 5 * Author: David Dajun Chen <dchen@diasemi.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 */ 13 14 #include <linux/module.h> 15 #include <linux/device.h> 16 #include <linux/i2c.h> 17 #include <linux/err.h> 18 19 #include <linux/mfd/da9055/core.h> 20 21 static int __devinit da9055_i2c_probe(struct i2c_client *i2c, 22 const struct i2c_device_id *id) 23 { 24 struct da9055 *da9055; 25 int ret; 26 27 da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); 28 if (!da9055) 29 return -ENOMEM; 30 31 da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); 32 if (IS_ERR(da9055->regmap)) { 33 ret = PTR_ERR(da9055->regmap); 34 dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 35 ret); 36 return ret; 37 } 38 39 da9055->dev = &i2c->dev; 40 da9055->chip_irq = i2c->irq; 41 42 i2c_set_clientdata(i2c, da9055); 43 44 return da9055_device_init(da9055); 45 } 46 47 static int __devexit da9055_i2c_remove(struct i2c_client *i2c) 48 { 49 struct da9055 *da9055 = i2c_get_clientdata(i2c); 50 51 da9055_device_exit(da9055); 52 53 return 0; 54 } 55 56 static struct i2c_device_id da9055_i2c_id[] = { 57 {"da9055-pmic", 0}, 58 { } 59 }; 60 61 static struct i2c_driver da9055_i2c_driver = { 62 .probe = da9055_i2c_probe, 63 .remove = __devexit_p(da9055_i2c_remove), 64 .id_table = da9055_i2c_id, 65 .driver = { 66 .name = "da9055", 67 .owner = THIS_MODULE, 68 }, 69 }; 70 71 static int __init da9055_i2c_init(void) 72 { 73 int ret; 74 75 ret = i2c_add_driver(&da9055_i2c_driver); 76 if (ret != 0) { 77 pr_err("DA9055 I2C registration failed %d\n", ret); 78 return ret; 79 } 80 81 return 0; 82 } 83 subsys_initcall(da9055_i2c_init); 84 85 static void __exit da9055_i2c_exit(void) 86 { 87 i2c_del_driver(&da9055_i2c_driver); 88 } 89 module_exit(da9055_i2c_exit); 90 91 MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); 92 MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); 93 MODULE_LICENSE("GPL"); 94