projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| dc21c7ad K |
1 | /* |
| 2 | * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/ | |
| 3 | * | |
| 4 | * Author: Keerthy <j-keerthy@ti.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU General Public License as | |
| 8 | * published by the Free Software Foundation version 2. | |
| 9 | * | |
| 10 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
| 11 | * kind, whether express or implied; without even the implied warranty | |
| 12 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 | * GNU General Public License for more details. | |
| 14 | */ | |
| 15 | ||
| 16 | #include <linux/interrupt.h> | |
| 17 | #include <linux/mfd/core.h> | |
| 18 | #include <linux/module.h> | |
| 19 | #include <linux/of_device.h> | |
| 20 | #include <linux/regmap.h> | |
| 21 | ||
| 22 | #include <linux/mfd/lp873x.h> | |
| 23 | ||
| 24 | static const struct regmap_config lp873x_regmap_config = { | |
| 25 | .reg_bits = 8, | |
| 26 | .val_bits = 8, | |
| 27 | .max_register = LP873X_REG_MAX, | |
| 28 | }; | |
| 29 | ||
| 30 | static const struct mfd_cell lp873x_cells[] = { | |
| 31 | { .name = "lp873x-regulator", }, | |
| 32 | { .name = "lp873x-gpio", }, | |
| 33 | }; | |
| 34 | ||
| 35 | static int lp873x_probe(struct i2c_client *client, | |
| 36 | const struct i2c_device_id *ids) | |
| 37 | { | |
| 38 | struct lp873x *lp873; | |
| 39 | int ret; | |
| 40 | unsigned int otpid; | |
| 41 | ||
| 42 | lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); | |
| 43 | if (!lp873) | |
| 44 | return -ENOMEM; | |
| 45 | ||
| 46 | lp873->dev = &client->dev; | |
| 47 | ||
| 48 | lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); | |
| 49 | if (IS_ERR(lp873->regmap)) { | |
| 50 | ret = PTR_ERR(lp873->regmap); | |
| 51 | dev_err(lp873->dev, | |
| 52 | "Failed to initialize register map: %d\n", ret); | |
| 53 | return ret; | |
| 54 | } | |
| 55 | ||
| dc21c7ad K |
56 | ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); |
| 57 | if (ret) { | |
| 58 | dev_err(lp873->dev, "Failed to read OTP ID\n"); | |
| 59 | return ret; | |
| 60 | } | |
| 61 | ||
| 62 | lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; | |
| 63 | ||
| 64 | i2c_set_clientdata(client, lp873); | |
| 65 | ||
| 66 | ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, | |
| 67 | ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); | |
| 68 | ||
| 69 | return ret; | |
| 70 | } | |
| 71 | ||
| 72 | static const struct of_device_id of_lp873x_match_table[] = { | |
| 73 | { .compatible = "ti,lp8733", }, | |
| 74 | { .compatible = "ti,lp8732", }, | |
| 75 | {} | |
| 76 | }; | |
| 77 | MODULE_DEVICE_TABLE(of, of_lp873x_match_table); | |
| 78 | ||
| 79 | static const struct i2c_device_id lp873x_id_table[] = { | |
| 80 | { "lp873x", 0 }, | |
| 81 | { }, | |
| 82 | }; | |
| 83 | MODULE_DEVICE_TABLE(i2c, lp873x_id_table); | |
| 84 | ||
| 85 | static struct i2c_driver lp873x_driver = { | |
| 86 | .driver = { | |
| 87 | .name = "lp873x", | |
| 88 | .of_match_table = of_lp873x_match_table, | |
| 89 | }, | |
| 90 | .probe = lp873x_probe, | |
| 91 | .id_table = lp873x_id_table, | |
| 92 | }; | |
| 93 | module_i2c_driver(lp873x_driver); | |
| 94 | ||
| 95 | MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>"); | |
| 96 | MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver"); | |
| 97 | MODULE_LICENSE("GPL v2"); |