projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| df3df646 MR |
1 | /* |
| 2 | * Copyright 2009-2010 Creative Product Design | |
| 3 | * Marc Reilly marc@cpdesign.com.au | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or modify it under | |
| 6 | * the terms of the GNU General Public License version 2 as published by the | |
| 7 | * Free Software Foundation. | |
| 8 | */ | |
| 9 | ||
| 10 | #include <linux/slab.h> | |
| 11 | #include <linux/module.h> | |
| 12 | #include <linux/platform_device.h> | |
| 13 | #include <linux/mutex.h> | |
| 14 | #include <linux/mfd/core.h> | |
| 15 | #include <linux/mfd/mc13xxx.h> | |
| 16 | #include <linux/of.h> | |
| 17 | #include <linux/of_device.h> | |
| 18 | #include <linux/of_gpio.h> | |
| 19 | #include <linux/i2c.h> | |
| 20 | #include <linux/err.h> | |
| 21 | ||
| 22 | #include "mc13xxx.h" | |
| 23 | ||
| 24 | static const struct i2c_device_id mc13xxx_i2c_device_id[] = { | |
| 25 | { | |
| 26 | .name = "mc13892", | |
| 27 | .driver_data = MC13XXX_ID_MC13892, | |
| 28 | }, { | |
| 29 | /* sentinel */ | |
| 30 | } | |
| 31 | }; | |
| 32 | MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); | |
| 33 | ||
| 34 | static const struct of_device_id mc13xxx_dt_ids[] = { | |
| 35 | { | |
| 36 | .compatible = "fsl,mc13892", | |
| 37 | .data = (void *) &mc13xxx_i2c_device_id[0], | |
| 38 | }, { | |
| 39 | /* sentinel */ | |
| 40 | } | |
| 41 | }; | |
| 42 | MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); | |
| 43 | ||
| 44 | static struct regmap_config mc13xxx_regmap_i2c_config = { | |
| 45 | .reg_bits = 8, | |
| 46 | .val_bits = 24, | |
| 47 | ||
| 48 | .max_register = MC13XXX_NUMREGS, | |
| 49 | ||
| 50 | .cache_type = REGCACHE_NONE, | |
| 51 | }; | |
| 52 | ||
| 53 | static int mc13xxx_i2c_probe(struct i2c_client *client, | |
| 54 | const struct i2c_device_id *id) | |
| 55 | { | |
| df3df646 MR |
56 | struct mc13xxx *mc13xxx; |
| 57 | struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev); | |
| 58 | int ret; | |
| 59 | ||
| e7c706b1 | 60 | mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); |
| df3df646 MR |
61 | if (!mc13xxx) |
| 62 | return -ENOMEM; | |
| 63 | ||
| 64 | dev_set_drvdata(&client->dev, mc13xxx); | |
| 65 | ||
| 66 | mc13xxx->dev = &client->dev; | |
| 67 | mutex_init(&mc13xxx->lock); | |
| 68 | ||
| e7c706b1 AL |
69 | mc13xxx->regmap = devm_regmap_init_i2c(client, |
| 70 | &mc13xxx_regmap_i2c_config); | |
| df3df646 MR |
71 | if (IS_ERR(mc13xxx->regmap)) { |
| 72 | ret = PTR_ERR(mc13xxx->regmap); | |
| 73 | dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n", | |
| 74 | ret); | |
| 75 | dev_set_drvdata(&client->dev, NULL); | |
| df3df646 MR |
76 | return ret; |
| 77 | } | |
| 78 | ||
| 79 | ret = mc13xxx_common_init(mc13xxx, pdata, client->irq); | |
| 80 | ||
| 81 | if (ret == 0 && (id->driver_data != mc13xxx->ictype)) | |
| 82 | dev_warn(mc13xxx->dev, | |
| 83 | "device id doesn't match auto detection!\n"); | |
| 84 | ||
| 85 | return ret; | |
| 86 | } | |
| 87 | ||
| 4740f73f | 88 | static int mc13xxx_i2c_remove(struct i2c_client *client) |
| df3df646 MR |
89 | { |
| 90 | struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev); | |
| 91 | ||
| 92 | mc13xxx_common_cleanup(mc13xxx); | |
| 93 | ||
| 94 | return 0; | |
| 95 | } | |
| 96 | ||
| 97 | static struct i2c_driver mc13xxx_i2c_driver = { | |
| 98 | .id_table = mc13xxx_i2c_device_id, | |
| 99 | .driver = { | |
| 100 | .owner = THIS_MODULE, | |
| 101 | .name = "mc13xxx", | |
| 102 | .of_match_table = mc13xxx_dt_ids, | |
| 103 | }, | |
| 104 | .probe = mc13xxx_i2c_probe, | |
| 84449216 | 105 | .remove = mc13xxx_i2c_remove, |
| df3df646 MR |
106 | }; |
| 107 | ||
| 108 | static int __init mc13xxx_i2c_init(void) | |
| 109 | { | |
| 110 | return i2c_add_driver(&mc13xxx_i2c_driver); | |
| 111 | } | |
| 112 | subsys_initcall(mc13xxx_i2c_init); | |
| 113 | ||
| 114 | static void __exit mc13xxx_i2c_exit(void) | |
| 115 | { | |
| 116 | i2c_del_driver(&mc13xxx_i2c_driver); | |
| 117 | } | |
| 118 | module_exit(mc13xxx_i2c_exit); | |
| 119 | ||
| 120 | MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); | |
| 121 | MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); | |
| 122 | MODULE_LICENSE("GPL v2"); |