projects / mirror_ubuntu-artful-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", | |
| cd0f34b0 | 27 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892, |
| 0312e024 UKK |
28 | }, { |
| 29 | .name = "mc34708", | |
| 30 | .driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708, | |
| df3df646 MR |
31 | }, { |
| 32 | /* sentinel */ | |
| 33 | } | |
| 34 | }; | |
| 35 | MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id); | |
| 36 | ||
| 37 | static const struct of_device_id mc13xxx_dt_ids[] = { | |
| 38 | { | |
| 39 | .compatible = "fsl,mc13892", | |
| cd0f34b0 | 40 | .data = &mc13xxx_variant_mc13892, |
| 0312e024 UKK |
41 | }, { |
| 42 | .compatible = "fsl,mc34708", | |
| 43 | .data = &mc13xxx_variant_mc34708, | |
| df3df646 MR |
44 | }, { |
| 45 | /* sentinel */ | |
| 46 | } | |
| 47 | }; | |
| 48 | MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids); | |
| 49 | ||
| 50 | static struct regmap_config mc13xxx_regmap_i2c_config = { | |
| 51 | .reg_bits = 8, | |
| 52 | .val_bits = 24, | |
| 53 | ||
| 54 | .max_register = MC13XXX_NUMREGS, | |
| 55 | ||
| 56 | .cache_type = REGCACHE_NONE, | |
| 57 | }; | |
| 58 | ||
| 59 | static int mc13xxx_i2c_probe(struct i2c_client *client, | |
| 60 | const struct i2c_device_id *id) | |
| 61 | { | |
| df3df646 MR |
62 | struct mc13xxx *mc13xxx; |
| 63 | struct mc13xxx_platform_data *pdata = dev_get_platdata(&client->dev); | |
| 64 | int ret; | |
| 65 | ||
| e7c706b1 | 66 | mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL); |
| df3df646 MR |
67 | if (!mc13xxx) |
| 68 | return -ENOMEM; | |
| 69 | ||
| 70 | dev_set_drvdata(&client->dev, mc13xxx); | |
| 71 | ||
| 72 | mc13xxx->dev = &client->dev; | |
| 73 | mutex_init(&mc13xxx->lock); | |
| 74 | ||
| e7c706b1 AL |
75 | mc13xxx->regmap = devm_regmap_init_i2c(client, |
| 76 | &mc13xxx_regmap_i2c_config); | |
| df3df646 MR |
77 | if (IS_ERR(mc13xxx->regmap)) { |
| 78 | ret = PTR_ERR(mc13xxx->regmap); | |
| 79 | dev_err(mc13xxx->dev, "Failed to initialize register map: %d\n", | |
| 80 | ret); | |
| 81 | dev_set_drvdata(&client->dev, NULL); | |
| df3df646 MR |
82 | return ret; |
| 83 | } | |
| 84 | ||
| cd0f34b0 UKK |
85 | if (client->dev.of_node) { |
| 86 | const struct of_device_id *of_id = | |
| 87 | of_match_device(mc13xxx_dt_ids, &client->dev); | |
| 88 | mc13xxx->variant = of_id->data; | |
| 89 | } else { | |
| 90 | mc13xxx->variant = (void *)id->driver_data; | |
| 91 | } | |
| df3df646 | 92 | |
| cd0f34b0 | 93 | ret = mc13xxx_common_init(mc13xxx, pdata, client->irq); |
| df3df646 MR |
94 | |
| 95 | return ret; | |
| 96 | } | |
| 97 | ||
| 4740f73f | 98 | static int mc13xxx_i2c_remove(struct i2c_client *client) |
| df3df646 MR |
99 | { |
| 100 | struct mc13xxx *mc13xxx = dev_get_drvdata(&client->dev); | |
| 101 | ||
| 102 | mc13xxx_common_cleanup(mc13xxx); | |
| 103 | ||
| 104 | return 0; | |
| 105 | } | |
| 106 | ||
| 107 | static struct i2c_driver mc13xxx_i2c_driver = { | |
| 108 | .id_table = mc13xxx_i2c_device_id, | |
| 109 | .driver = { | |
| 110 | .owner = THIS_MODULE, | |
| 111 | .name = "mc13xxx", | |
| 112 | .of_match_table = mc13xxx_dt_ids, | |
| 113 | }, | |
| 114 | .probe = mc13xxx_i2c_probe, | |
| 84449216 | 115 | .remove = mc13xxx_i2c_remove, |
| df3df646 MR |
116 | }; |
| 117 | ||
| 118 | static int __init mc13xxx_i2c_init(void) | |
| 119 | { | |
| 120 | return i2c_add_driver(&mc13xxx_i2c_driver); | |
| 121 | } | |
| 122 | subsys_initcall(mc13xxx_i2c_init); | |
| 123 | ||
| 124 | static void __exit mc13xxx_i2c_exit(void) | |
| 125 | { | |
| 126 | i2c_del_driver(&mc13xxx_i2c_driver); | |
| 127 | } | |
| 128 | module_exit(mc13xxx_i2c_exit); | |
| 129 | ||
| 130 | MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC"); | |
| 131 | MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au"); | |
| 132 | MODULE_LICENSE("GPL v2"); |