Eric Lee / smarc-fsl-linux-kernel

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drivers/mfd/lp87565.c 2.52 KB
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a10e763b8   Thomas Gleixner   treewide: Replace... 
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  // SPDX-License-Identifier: GPL-2.0-only
1e3496000   Keerthy   mfd: Add LP87565 ... 
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  /*
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   * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
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   *
   * Author: Keerthy <j-keerthy@ti.com>
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   */
  
  #include <linux/interrupt.h>
  #include <linux/mfd/core.h>
  #include <linux/module.h>
  #include <linux/of_device.h>
  #include <linux/regmap.h>
  
  #include <linux/mfd/lp87565.h>
  
  static const struct regmap_config lp87565_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  	.max_register = LP87565_REG_MAX,
  };
  
  static const struct mfd_cell lp87565_cells[] = {
  	{ .name = "lp87565-q1-regulator", },
  	{ .name = "lp87565-q1-gpio", },
  };
  
  static const struct of_device_id of_lp87565_match_table[] = {
  	{ .compatible = "ti,lp87565", },
  	{
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  		.compatible = "ti,lp87524-q1",
  		.data = (void *)LP87565_DEVICE_TYPE_LP87524_Q1,
  	},
  	{
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  		.compatible = "ti,lp87565-q1",
  		.data = (void *)LP87565_DEVICE_TYPE_LP87565_Q1,
  	},
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  	{
  		.compatible = "ti,lp87561-q1",
  		.data = (void *)LP87565_DEVICE_TYPE_LP87561_Q1,
  	},
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  	{}
  };
  MODULE_DEVICE_TABLE(of, of_lp87565_match_table);
  
  static int lp87565_probe(struct i2c_client *client,
  			 const struct i2c_device_id *ids)
  {
  	struct lp87565 *lp87565;
  	const struct of_device_id *of_id;
  	int ret;
  	unsigned int otpid;
  
  	lp87565 = devm_kzalloc(&client->dev, sizeof(*lp87565), GFP_KERNEL);
  	if (!lp87565)
  		return -ENOMEM;
  
  	lp87565->dev = &client->dev;
  
  	lp87565->regmap = devm_regmap_init_i2c(client, &lp87565_regmap_config);
  	if (IS_ERR(lp87565->regmap)) {
  		ret = PTR_ERR(lp87565->regmap);
  		dev_err(lp87565->dev,
  			"Failed to initialize register map: %d
  ", ret);
  		return ret;
  	}
  
  	ret = regmap_read(lp87565->regmap, LP87565_REG_OTP_REV, &otpid);
  	if (ret) {
  		dev_err(lp87565->dev, "Failed to read OTP ID
  ");
  		return ret;
  	}
  
  	lp87565->rev = otpid & LP87565_OTP_REV_OTP_ID;
  
  	of_id = of_match_device(of_lp87565_match_table, &client->dev);
  	if (of_id)
  		lp87565->dev_type = (enum lp87565_device_type)of_id->data;
  
  	i2c_set_clientdata(client, lp87565);
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  	return devm_mfd_add_devices(lp87565->dev, PLATFORM_DEVID_AUTO,
  				    lp87565_cells, ARRAY_SIZE(lp87565_cells),
  				    NULL, 0, NULL);
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  }
  
  static const struct i2c_device_id lp87565_id_table[] = {
  	{ "lp87565-q1", 0 },
  	{ },
  };
  MODULE_DEVICE_TABLE(i2c, lp87565_id_table);
  
  static struct i2c_driver lp87565_driver = {
  	.driver	= {
  		.name	= "lp87565",
  		.of_match_table = of_lp87565_match_table,
  	},
  	.probe = lp87565_probe,
  	.id_table = lp87565_id_table,
  };
  module_i2c_driver(lp87565_driver);
  
  MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
  MODULE_DESCRIPTION("lp87565 chip family Multi-Function Device driver");
  MODULE_LICENSE("GPL v2");