12896434cSAshish Jangam /* I2C access for DA9055 PMICs. 22896434cSAshish Jangam * 32896434cSAshish Jangam * Copyright(c) 2012 Dialog Semiconductor Ltd. 42896434cSAshish Jangam * 52896434cSAshish Jangam * Author: David Dajun Chen <dchen@diasemi.com> 62896434cSAshish Jangam * 72896434cSAshish Jangam * This program is free software; you can redistribute it and/or modify 82896434cSAshish Jangam * it under the terms of the GNU General Public License as published by 92896434cSAshish Jangam * the Free Software Foundation; either version 2 of the License, or 102896434cSAshish Jangam * (at your option) any later version. 112896434cSAshish Jangam * 122896434cSAshish Jangam */ 132896434cSAshish Jangam 142896434cSAshish Jangam #include <linux/module.h> 152896434cSAshish Jangam #include <linux/device.h> 162896434cSAshish Jangam #include <linux/i2c.h> 172896434cSAshish Jangam #include <linux/err.h> 182896434cSAshish Jangam 192896434cSAshish Jangam #include <linux/mfd/da9055/core.h> 202896434cSAshish Jangam 212896434cSAshish Jangam static int __devinit da9055_i2c_probe(struct i2c_client *i2c, 222896434cSAshish Jangam const struct i2c_device_id *id) 232896434cSAshish Jangam { 242896434cSAshish Jangam struct da9055 *da9055; 252896434cSAshish Jangam int ret; 262896434cSAshish Jangam 272896434cSAshish Jangam da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); 282896434cSAshish Jangam if (!da9055) 292896434cSAshish Jangam return -ENOMEM; 302896434cSAshish Jangam 312896434cSAshish Jangam da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); 322896434cSAshish Jangam if (IS_ERR(da9055->regmap)) { 332896434cSAshish Jangam ret = PTR_ERR(da9055->regmap); 342896434cSAshish Jangam dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 352896434cSAshish Jangam ret); 362896434cSAshish Jangam return ret; 372896434cSAshish Jangam } 382896434cSAshish Jangam 392896434cSAshish Jangam da9055->dev = &i2c->dev; 402896434cSAshish Jangam da9055->chip_irq = i2c->irq; 412896434cSAshish Jangam 422896434cSAshish Jangam i2c_set_clientdata(i2c, da9055); 432896434cSAshish Jangam 442896434cSAshish Jangam return da9055_device_init(da9055); 452896434cSAshish Jangam } 462896434cSAshish Jangam 472896434cSAshish Jangam static int __devexit da9055_i2c_remove(struct i2c_client *i2c) 482896434cSAshish Jangam { 492896434cSAshish Jangam struct da9055 *da9055 = i2c_get_clientdata(i2c); 502896434cSAshish Jangam 512896434cSAshish Jangam da9055_device_exit(da9055); 522896434cSAshish Jangam 532896434cSAshish Jangam return 0; 542896434cSAshish Jangam } 552896434cSAshish Jangam 562896434cSAshish Jangam static struct i2c_device_id da9055_i2c_id[] = { 572896434cSAshish Jangam {"da9055-pmic", 0}, 582896434cSAshish Jangam { } 592896434cSAshish Jangam }; 602896434cSAshish Jangam 612896434cSAshish Jangam static struct i2c_driver da9055_i2c_driver = { 622896434cSAshish Jangam .probe = da9055_i2c_probe, 6384449216SBill Pemberton .remove = da9055_i2c_remove, 642896434cSAshish Jangam .id_table = da9055_i2c_id, 652896434cSAshish Jangam .driver = { 662896434cSAshish Jangam .name = "da9055", 672896434cSAshish Jangam .owner = THIS_MODULE, 682896434cSAshish Jangam }, 692896434cSAshish Jangam }; 702896434cSAshish Jangam 712896434cSAshish Jangam static int __init da9055_i2c_init(void) 722896434cSAshish Jangam { 732896434cSAshish Jangam int ret; 742896434cSAshish Jangam 752896434cSAshish Jangam ret = i2c_add_driver(&da9055_i2c_driver); 762896434cSAshish Jangam if (ret != 0) { 772896434cSAshish Jangam pr_err("DA9055 I2C registration failed %d\n", ret); 782896434cSAshish Jangam return ret; 792896434cSAshish Jangam } 802896434cSAshish Jangam 812896434cSAshish Jangam return 0; 822896434cSAshish Jangam } 832896434cSAshish Jangam subsys_initcall(da9055_i2c_init); 842896434cSAshish Jangam 852896434cSAshish Jangam static void __exit da9055_i2c_exit(void) 862896434cSAshish Jangam { 872896434cSAshish Jangam i2c_del_driver(&da9055_i2c_driver); 882896434cSAshish Jangam } 892896434cSAshish Jangam module_exit(da9055_i2c_exit); 902896434cSAshish Jangam 912896434cSAshish Jangam MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); 922896434cSAshish Jangam MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC"); 932896434cSAshish Jangam MODULE_LICENSE("GPL"); 94