Eric Lee / smarc-fsl-linux-kernel

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drivers/regulator/88pg86x.c 2.83 KB
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a265b03bd   Alexander Monakov   regulator: 88pg86... 
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  // SPDX-License-Identifier: GPL-2.0
  #include <linux/module.h>
  #include <linux/i2c.h>
  #include <linux/of.h>
  #include <linux/regulator/driver.h>
  #include <linux/regmap.h>
  
  static const struct regulator_ops pg86x_ops = {
  	.set_voltage_sel = regulator_set_voltage_sel_regmap,
  	.get_voltage_sel = regulator_get_voltage_sel_regmap,
  	.list_voltage = regulator_list_voltage_linear_range,
  };
60ab7f415   Matti Vaittinen   regulator: use li... 
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  static const struct linear_range pg86x_buck1_ranges[] = {
a265b03bd   Alexander Monakov   regulator: 88pg86... 
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  	REGULATOR_LINEAR_RANGE(      0,  0, 10,     0),
  	REGULATOR_LINEAR_RANGE(1000000, 11, 34, 25000),
  	REGULATOR_LINEAR_RANGE(1600000, 35, 47, 50000),
  };
60ab7f415   Matti Vaittinen   regulator: use li... 
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  static const struct linear_range pg86x_buck2_ranges[] = {
a265b03bd   Alexander Monakov   regulator: 88pg86... 
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  	REGULATOR_LINEAR_RANGE(      0,  0, 15,     0),
  	REGULATOR_LINEAR_RANGE(1000000, 16, 39, 25000),
  	REGULATOR_LINEAR_RANGE(1600000, 40, 52, 50000),
  };
  
  static const struct regulator_desc pg86x_regulators[] = {
  	{
  		.id = 0,
  		.type = REGULATOR_VOLTAGE,
  		.name = "buck1",
  		.of_match = of_match_ptr("buck1"),
  		.n_voltages = 11 + 24 + 13,
  		.linear_ranges = pg86x_buck1_ranges,
  		.n_linear_ranges = 3,
  		.vsel_reg  = 0x24,
  		.vsel_mask = 0xff,
  		.ops = &pg86x_ops,
  		.owner = THIS_MODULE
  	},
  	{
  		.id = 1,
  		.type = REGULATOR_VOLTAGE,
  		.name = "buck2",
  		.of_match = of_match_ptr("buck2"),
  		.n_voltages = 16 + 24 + 13,
  		.linear_ranges = pg86x_buck2_ranges,
  		.n_linear_ranges = 3,
  		.vsel_reg  = 0x13,
  		.vsel_mask = 0xff,
  		.ops = &pg86x_ops,
  		.owner = THIS_MODULE
  	},
  };
  
  static const struct regmap_config pg86x_regmap = {
  	.reg_bits = 8,
  	.val_bits = 8,
  };
  
  static int pg86x_i2c_probe(struct i2c_client *i2c)
  {
  	int id, ret;
  	struct regulator_config config = {.dev = &i2c->dev};
  	struct regmap *regmap = devm_regmap_init_i2c(i2c, &pg86x_regmap);
  
  	if (IS_ERR(regmap)) {
  		ret = PTR_ERR(regmap);
  		dev_err(&i2c->dev, "regmap init failed: %d
  ", ret);
  		return ret;
  	}
  
  	for (id = 0; id < ARRAY_SIZE(pg86x_regulators); id++) {
  		struct regulator_dev *rdev;
  		rdev = devm_regulator_register(&i2c->dev,
  					       &pg86x_regulators[id],
  					       &config);
  		if (IS_ERR(rdev)) {
  			ret = PTR_ERR(rdev);
  			dev_err(&i2c->dev, "failed to register %s: %d
  ",
  				pg86x_regulators[id].name, ret);
  			return ret;
  		}
  	}
  	return 0;
  }
e11e068cc   Jisheng Zhang   regulator: 88pg86... 
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  static const struct of_device_id __maybe_unused pg86x_dt_ids[] = {
a265b03bd   Alexander Monakov   regulator: 88pg86... 
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  	{ .compatible = "marvell,88pg867" },
  	{ .compatible = "marvell,88pg868" },
  	{ }
  };
  MODULE_DEVICE_TABLE(of, pg86x_dt_ids);
  
  static const struct i2c_device_id pg86x_i2c_id[] = {
  	{ "88pg867", },
  	{ "88pg868", },
  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, pg86x_i2c_id);
  
  static struct i2c_driver pg86x_regulator_driver = {
  	.driver = {
  		.name = "88pg86x",
  		.of_match_table = of_match_ptr(pg86x_dt_ids),
  	},
  	.probe_new = pg86x_i2c_probe,
  	.id_table = pg86x_i2c_id,
  };
  
  module_i2c_driver(pg86x_regulator_driver);
  
  MODULE_DESCRIPTION("Marvell 88PG86X voltage regulator");
  MODULE_AUTHOR("Alexander Monakov <amonakov@gmail.com>");
  MODULE_LICENSE("GPL");