Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Arizona-i2c.c -- Arizona I2C bus interface |
| 3 | * |
| 4 | * Copyright 2012 Wolfson Microelectronics plc |
| 5 | * |
| 6 | * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/err.h> |
| 14 | #include <linux/i2c.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/pm_runtime.h> |
| 17 | #include <linux/regmap.h> |
| 18 | #include <linux/regulator/consumer.h> |
| 19 | #include <linux/slab.h> |
Sachin Kamat | 3d6d1d1 | 2013-10-16 14:26:56 +0530 | [diff] [blame] | 20 | #include <linux/of.h> |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 21 | |
| 22 | #include <linux/mfd/arizona/core.h> |
| 23 | |
| 24 | #include "arizona.h" |
| 25 | |
Bill Pemberton | f791be4 | 2012-11-19 13:23:04 -0500 | [diff] [blame] | 26 | static int arizona_i2c_probe(struct i2c_client *i2c, |
Lee Jones | 942786e | 2014-07-02 14:28:46 +0100 | [diff] [blame] | 27 | const struct i2c_device_id *id) |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 28 | { |
| 29 | struct arizona *arizona; |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 30 | const struct regmap_config *regmap_config = NULL; |
Lee Jones | 942786e | 2014-07-02 14:28:46 +0100 | [diff] [blame] | 31 | unsigned long type; |
| 32 | int ret; |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 33 | |
Mark Brown | d781009 | 2013-03-25 00:11:27 +0000 | [diff] [blame] | 34 | if (i2c->dev.of_node) |
| 35 | type = arizona_of_get_type(&i2c->dev); |
| 36 | else |
| 37 | type = id->driver_data; |
| 38 | |
| 39 | switch (type) { |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 40 | case WM5102: |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 41 | if (IS_ENABLED(CONFIG_MFD_WM5102)) |
| 42 | regmap_config = &wm5102_i2c_regmap; |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 43 | break; |
Mark Brown | e102bef | 2012-07-10 12:37:58 +0100 | [diff] [blame] | 44 | case WM5110: |
Richard Fitzgerald | e5d4ef0 | 2015-01-17 15:21:22 +0000 | [diff] [blame] | 45 | case WM8280: |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 46 | if (IS_ENABLED(CONFIG_MFD_WM5110)) |
| 47 | regmap_config = &wm5110_i2c_regmap; |
Mark Brown | e102bef | 2012-07-10 12:37:58 +0100 | [diff] [blame] | 48 | break; |
Charles Keepax | dc7d486 | 2013-06-13 09:43:29 +0100 | [diff] [blame] | 49 | case WM8997: |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 50 | if (IS_ENABLED(CONFIG_MFD_WM8997)) |
| 51 | regmap_config = &wm8997_i2c_regmap; |
Charles Keepax | dc7d486 | 2013-06-13 09:43:29 +0100 | [diff] [blame] | 52 | break; |
Richard Fitzgerald | 6887b04 | 2015-07-03 16:16:35 +0100 | [diff] [blame] | 53 | case WM8998: |
| 54 | case WM1814: |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 55 | if (IS_ENABLED(CONFIG_MFD_WM8998)) |
| 56 | regmap_config = &wm8998_i2c_regmap; |
Richard Fitzgerald | 6887b04 | 2015-07-03 16:16:35 +0100 | [diff] [blame] | 57 | break; |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 58 | default: |
Richard Fitzgerald | 2e44e28 | 2015-10-02 13:29:15 +0100 | [diff] [blame^] | 59 | dev_err(&i2c->dev, "Unknown device type %ld\n", type); |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 60 | return -EINVAL; |
| 61 | } |
| 62 | |
Richard Fitzgerald | b61c1ec | 2015-10-02 13:29:14 +0100 | [diff] [blame] | 63 | if (!regmap_config) { |
| 64 | dev_err(&i2c->dev, |
| 65 | "No kernel support for device type %ld\n", type); |
| 66 | return -EINVAL; |
| 67 | } |
| 68 | |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 69 | arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL); |
| 70 | if (arizona == NULL) |
| 71 | return -ENOMEM; |
| 72 | |
| 73 | arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config); |
| 74 | if (IS_ERR(arizona->regmap)) { |
| 75 | ret = PTR_ERR(arizona->regmap); |
| 76 | dev_err(&i2c->dev, "Failed to allocate register map: %d\n", |
| 77 | ret); |
| 78 | return ret; |
| 79 | } |
| 80 | |
Richard Fitzgerald | 2e44e28 | 2015-10-02 13:29:15 +0100 | [diff] [blame^] | 81 | arizona->type = type; |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 82 | arizona->dev = &i2c->dev; |
| 83 | arizona->irq = i2c->irq; |
| 84 | |
| 85 | return arizona_dev_init(arizona); |
| 86 | } |
| 87 | |
Bill Pemberton | 4740f73 | 2012-11-19 13:26:01 -0500 | [diff] [blame] | 88 | static int arizona_i2c_remove(struct i2c_client *i2c) |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 89 | { |
| 90 | struct arizona *arizona = dev_get_drvdata(&i2c->dev); |
| 91 | arizona_dev_exit(arizona); |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | static const struct i2c_device_id arizona_i2c_id[] = { |
| 96 | { "wm5102", WM5102 }, |
Mark Brown | e102bef | 2012-07-10 12:37:58 +0100 | [diff] [blame] | 97 | { "wm5110", WM5110 }, |
Richard Fitzgerald | e5d4ef0 | 2015-01-17 15:21:22 +0000 | [diff] [blame] | 98 | { "wm8280", WM8280 }, |
Charles Keepax | dc7d486 | 2013-06-13 09:43:29 +0100 | [diff] [blame] | 99 | { "wm8997", WM8997 }, |
Richard Fitzgerald | 6887b04 | 2015-07-03 16:16:35 +0100 | [diff] [blame] | 100 | { "wm8998", WM8998 }, |
| 101 | { "wm1814", WM1814 }, |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 102 | { } |
| 103 | }; |
| 104 | MODULE_DEVICE_TABLE(i2c, arizona_i2c_id); |
| 105 | |
| 106 | static struct i2c_driver arizona_i2c_driver = { |
| 107 | .driver = { |
| 108 | .name = "arizona", |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 109 | .pm = &arizona_pm_ops, |
Mark Brown | d781009 | 2013-03-25 00:11:27 +0000 | [diff] [blame] | 110 | .of_match_table = of_match_ptr(arizona_of_match), |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 111 | }, |
| 112 | .probe = arizona_i2c_probe, |
Bill Pemberton | 8444921 | 2012-11-19 13:20:24 -0500 | [diff] [blame] | 113 | .remove = arizona_i2c_remove, |
Mark Brown | c6f7562 | 2012-06-19 16:35:49 +0100 | [diff] [blame] | 114 | .id_table = arizona_i2c_id, |
| 115 | }; |
| 116 | |
| 117 | module_i2c_driver(arizona_i2c_driver); |
| 118 | |
| 119 | MODULE_DESCRIPTION("Arizona I2C bus interface"); |
| 120 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); |
| 121 | MODULE_LICENSE("GPL"); |