19dc15f81SMark Brown // SPDX-License-Identifier: GPL-2.0-only 29dc15f81SMark Brown /* 39dc15f81SMark Brown * wm8731-i2c.c -- WM8731 ALSA SoC Audio driver I2C code 49dc15f81SMark Brown * 59dc15f81SMark Brown * Copyright 2005 Openedhand Ltd. 69dc15f81SMark Brown * Copyright 2006-12 Wolfson Microelectronics, plc 79dc15f81SMark Brown * 89dc15f81SMark Brown * Author: Richard Purdie <richard@openedhand.com> 99dc15f81SMark Brown * 109dc15f81SMark Brown * Based on wm8753.c by Liam Girdwood 119dc15f81SMark Brown */ 129dc15f81SMark Brown 139dc15f81SMark Brown #include <linux/i2c.h> 14340d79a1SRob Herring #include <linux/mod_devicetable.h> 159dc15f81SMark Brown #include <linux/module.h> 169dc15f81SMark Brown 179dc15f81SMark Brown #include "wm8731.h" 189dc15f81SMark Brown 199dc15f81SMark Brown 209dc15f81SMark Brown static const struct of_device_id wm8731_of_match[] = { 219dc15f81SMark Brown { .compatible = "wlf,wm8731", }, 229dc15f81SMark Brown { } 239dc15f81SMark Brown }; 249dc15f81SMark Brown MODULE_DEVICE_TABLE(of, wm8731_of_match); 259dc15f81SMark Brown 2640658542SStephen Kitt static int wm8731_i2c_probe(struct i2c_client *i2c) 279dc15f81SMark Brown { 289dc15f81SMark Brown struct wm8731_priv *wm8731; 299dc15f81SMark Brown int ret; 309dc15f81SMark Brown 319dc15f81SMark Brown wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv), 329dc15f81SMark Brown GFP_KERNEL); 339dc15f81SMark Brown if (wm8731 == NULL) 349dc15f81SMark Brown return -ENOMEM; 359dc15f81SMark Brown 369dc15f81SMark Brown i2c_set_clientdata(i2c, wm8731); 379dc15f81SMark Brown 389dc15f81SMark Brown wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap); 399dc15f81SMark Brown if (IS_ERR(wm8731->regmap)) { 409dc15f81SMark Brown ret = PTR_ERR(wm8731->regmap); 419dc15f81SMark Brown dev_err(&i2c->dev, "Failed to allocate register map: %d\n", 429dc15f81SMark Brown ret); 439dc15f81SMark Brown return ret; 449dc15f81SMark Brown } 459dc15f81SMark Brown 469dc15f81SMark Brown return wm8731_init(&i2c->dev, wm8731); 479dc15f81SMark Brown } 489dc15f81SMark Brown 499dc15f81SMark Brown static const struct i2c_device_id wm8731_i2c_id[] = { 50*ba2a2c37SUwe Kleine-König { "wm8731" }, 519dc15f81SMark Brown { } 529dc15f81SMark Brown }; 539dc15f81SMark Brown MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id); 549dc15f81SMark Brown 559dc15f81SMark Brown static struct i2c_driver wm8731_i2c_driver = { 569dc15f81SMark Brown .driver = { 579dc15f81SMark Brown .name = "wm8731", 589dc15f81SMark Brown .of_match_table = wm8731_of_match, 599dc15f81SMark Brown }, 609abcd240SUwe Kleine-König .probe = wm8731_i2c_probe, 619dc15f81SMark Brown .id_table = wm8731_i2c_id, 629dc15f81SMark Brown }; 639dc15f81SMark Brown 649dc15f81SMark Brown module_i2c_driver(wm8731_i2c_driver); 659dc15f81SMark Brown 669dc15f81SMark Brown MODULE_DESCRIPTION("ASoC WM8731 driver - I2C"); 679dc15f81SMark Brown MODULE_AUTHOR("Richard Purdie"); 689dc15f81SMark Brown MODULE_LICENSE("GPL"); 69