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97 lines
2.5 KiB
97 lines
2.5 KiB
/* |
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* Copyright (C) 2016 Texas Instruments Incorporated - https://www.ti.com/ |
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* |
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* Author: Keerthy <[email protected]> |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation version 2. |
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* |
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
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* kind, whether express or implied; without even the implied warranty |
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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*/ |
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#include <linux/interrupt.h> |
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#include <linux/mfd/core.h> |
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#include <linux/module.h> |
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#include <linux/of_device.h> |
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#include <linux/regmap.h> |
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#include <linux/mfd/lp873x.h> |
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static const struct regmap_config lp873x_regmap_config = { |
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.reg_bits = 8, |
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.val_bits = 8, |
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.max_register = LP873X_REG_MAX, |
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}; |
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static const struct mfd_cell lp873x_cells[] = { |
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{ .name = "lp873x-regulator", }, |
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{ .name = "lp873x-gpio", }, |
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}; |
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static int lp873x_probe(struct i2c_client *client, |
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const struct i2c_device_id *ids) |
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{ |
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struct lp873x *lp873; |
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int ret; |
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unsigned int otpid; |
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lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL); |
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if (!lp873) |
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return -ENOMEM; |
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lp873->dev = &client->dev; |
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lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config); |
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if (IS_ERR(lp873->regmap)) { |
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ret = PTR_ERR(lp873->regmap); |
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dev_err(lp873->dev, |
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"Failed to initialize register map: %d\n", ret); |
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return ret; |
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} |
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ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid); |
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if (ret) { |
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dev_err(lp873->dev, "Failed to read OTP ID\n"); |
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return ret; |
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} |
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lp873->rev = otpid & LP873X_OTP_REV_OTP_ID; |
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i2c_set_clientdata(client, lp873); |
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ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells, |
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ARRAY_SIZE(lp873x_cells), NULL, 0, NULL); |
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return ret; |
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} |
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static const struct of_device_id of_lp873x_match_table[] = { |
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{ .compatible = "ti,lp8733", }, |
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{ .compatible = "ti,lp8732", }, |
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{} |
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}; |
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MODULE_DEVICE_TABLE(of, of_lp873x_match_table); |
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static const struct i2c_device_id lp873x_id_table[] = { |
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{ "lp873x", 0 }, |
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{ }, |
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}; |
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MODULE_DEVICE_TABLE(i2c, lp873x_id_table); |
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static struct i2c_driver lp873x_driver = { |
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.driver = { |
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.name = "lp873x", |
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.of_match_table = of_lp873x_match_table, |
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}, |
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.probe = lp873x_probe, |
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.id_table = lp873x_id_table, |
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}; |
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module_i2c_driver(lp873x_driver); |
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MODULE_AUTHOR("J Keerthy <[email protected]>"); |
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MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver"); |
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MODULE_LICENSE("GPL v2");
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