Eric Lee / smarc-fsl-linux-kernel

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drivers/mfd/act8945a.c 2.01 KB
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2874c5fd2   Thomas Gleixner   treewide: Replace... 
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  // SPDX-License-Identifier: GPL-2.0-or-later
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  /*
   * MFD driver for Active-semi ACT8945a PMIC
   *
   * Copyright (C) 2015 Atmel Corporation.
   *
   * Author: Wenyou Yang <wenyou.yang@atmel.com>
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   */
  
  #include <linux/i2c.h>
  #include <linux/mfd/core.h>
  #include <linux/module.h>
  #include <linux/of_device.h>
  #include <linux/regmap.h>
  
  static const struct mfd_cell act8945a_devs[] = {
  	{
  		.name = "act8945a-regulator",
  	},
  	{
  		.name = "act8945a-charger",
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  		.of_compatible = "active-semi,act8945a-charger",
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  	},
  };
  
  static const struct regmap_config act8945a_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  };
  
  static int act8945a_i2c_probe(struct i2c_client *i2c,
  			      const struct i2c_device_id *id)
  {
  	int ret;
  	struct regmap *regmap;
  
  	regmap = devm_regmap_init_i2c(i2c, &act8945a_regmap_config);
  	if (IS_ERR(regmap)) {
  		ret = PTR_ERR(regmap);
  		dev_err(&i2c->dev, "regmap init failed: %d
  ", ret);
  		return ret;
  	}
  
  	i2c_set_clientdata(i2c, regmap);
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  	ret = devm_mfd_add_devices(&i2c->dev, PLATFORM_DEVID_NONE,
  				   act8945a_devs, ARRAY_SIZE(act8945a_devs),
  				   NULL, 0, NULL);
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  	if (ret) {
  		dev_err(&i2c->dev, "Failed to add sub devices
  ");
  		return ret;
  	}
  
  	return 0;
  }
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  static const struct i2c_device_id act8945a_i2c_id[] = {
  	{ "act8945a", 0 },
  	{}
  };
  MODULE_DEVICE_TABLE(i2c, act8945a_i2c_id);
  
  static const struct of_device_id act8945a_of_match[] = {
  	{ .compatible = "active-semi,act8945a", },
  	{},
  };
  MODULE_DEVICE_TABLE(of, act8945a_of_match);
  
  static struct i2c_driver act8945a_i2c_driver = {
  	.driver = {
  		   .name = "act8945a",
  		   .of_match_table = of_match_ptr(act8945a_of_match),
  	},
  	.probe = act8945a_i2c_probe,
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  	.id_table = act8945a_i2c_id,
  };
  
  static int __init act8945a_i2c_init(void)
  {
  	return i2c_add_driver(&act8945a_i2c_driver);
  }
  subsys_initcall(act8945a_i2c_init);
  
  static void __exit act8945a_i2c_exit(void)
  {
  	i2c_del_driver(&act8945a_i2c_driver);
  }
  module_exit(act8945a_i2c_exit);
  
  MODULE_DESCRIPTION("ACT8945A PMIC multi-function driver");
  MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
  MODULE_LICENSE("GPL");