linux/drivers/regulator/isl9305.c
Arnaud Ebalard 6fd753572c regulator: isl9305: deprecate use of isl in compatible string for isil
"isil" and "isl" prefixes are used at various locations inside the kernel
to reference Intersil corporation. This patch is part of a series fixing
those locations were "isl" is used in compatible strings to use the now
expected "isil" prefix instead (NASDAQ symbol for Intersil and most used
version). The old compatible string is kept for backward compatibility.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2014-12-22 17:51:11 +00:00

210 lines
5.2 KiB
C

/*
* isl9305 - Intersil ISL9305 DCDC regulator
*
* Copyright 2014 Linaro Ltd
*
* Author: Mark Brown <broonie@kernel.org>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/platform_data/isl9305.h>
#include <linux/regmap.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
/*
* Registers
*/
#define ISL9305_DCD1OUT 0x0
#define ISL9305_DCD2OUT 0x1
#define ISL9305_LDO1OUT 0x2
#define ISL9305_LDO2OUT 0x3
#define ISL9305_DCD_PARAMETER 0x4
#define ISL9305_SYSTEM_PARAMETER 0x5
#define ISL9305_DCD_SRCTL 0x6
#define ISL9305_MAX_REG ISL9305_DCD_SRCTL
/*
* DCD_PARAMETER
*/
#define ISL9305_DCD_PHASE 0x40
#define ISL9305_DCD2_ULTRA 0x20
#define ISL9305_DCD1_ULTRA 0x10
#define ISL9305_DCD2_BLD 0x08
#define ISL9305_DCD1_BLD 0x04
#define ISL9305_DCD2_MODE 0x02
#define ISL9305_DCD1_MODE 0x01
/*
* SYSTEM_PARAMETER
*/
#define ISL9305_I2C_EN 0x40
#define ISL9305_DCDPOR_MASK 0x30
#define ISL9305_LDO2_EN 0x08
#define ISL9305_LDO1_EN 0x04
#define ISL9305_DCD2_EN 0x02
#define ISL9305_DCD1_EN 0x01
/*
* DCD_SRCTL
*/
#define ISL9305_DCD2SR_MASK 0xc0
#define ISL9305_DCD1SR_MASK 0x07
static const struct regulator_ops isl9305_ops = {
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
.list_voltage = regulator_list_voltage_linear,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
};
static const struct regulator_desc isl9305_regulators[] = {
[ISL9305_DCD1] = {
.name = "DCD1",
.of_match = of_match_ptr("dcd1"),
.regulators_node = of_match_ptr("regulators"),
.n_voltages = 0x70,
.min_uV = 825000,
.uV_step = 25000,
.vsel_reg = ISL9305_DCD1OUT,
.vsel_mask = 0x7f,
.enable_reg = ISL9305_SYSTEM_PARAMETER,
.enable_mask = ISL9305_DCD1_EN,
.supply_name = "VINDCD1",
.ops = &isl9305_ops,
},
[ISL9305_DCD2] = {
.name = "DCD2",
.of_match = of_match_ptr("dcd2"),
.regulators_node = of_match_ptr("regulators"),
.n_voltages = 0x70,
.min_uV = 825000,
.uV_step = 25000,
.vsel_reg = ISL9305_DCD2OUT,
.vsel_mask = 0x7f,
.enable_reg = ISL9305_SYSTEM_PARAMETER,
.enable_mask = ISL9305_DCD2_EN,
.supply_name = "VINDCD2",
.ops = &isl9305_ops,
},
[ISL9305_LDO1] = {
.name = "LDO1",
.of_match = of_match_ptr("ldo1"),
.regulators_node = of_match_ptr("regulators"),
.n_voltages = 0x37,
.min_uV = 900000,
.uV_step = 50000,
.vsel_reg = ISL9305_LDO1OUT,
.vsel_mask = 0x3f,
.enable_reg = ISL9305_SYSTEM_PARAMETER,
.enable_mask = ISL9305_LDO1_EN,
.supply_name = "VINLDO1",
.ops = &isl9305_ops,
},
[ISL9305_LDO2] = {
.name = "LDO2",
.of_match = of_match_ptr("ldo2"),
.regulators_node = of_match_ptr("regulators"),
.n_voltages = 0x37,
.min_uV = 900000,
.uV_step = 50000,
.vsel_reg = ISL9305_LDO2OUT,
.vsel_mask = 0x3f,
.enable_reg = ISL9305_SYSTEM_PARAMETER,
.enable_mask = ISL9305_LDO2_EN,
.supply_name = "VINLDO2",
.ops = &isl9305_ops,
},
};
static const struct regmap_config isl9305_regmap = {
.reg_bits = 8,
.val_bits = 8,
.max_register = ISL9305_MAX_REG,
.cache_type = REGCACHE_RBTREE,
};
static int isl9305_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct regulator_config config = { };
struct isl9305_pdata *pdata = i2c->dev.platform_data;
struct regulator_dev *rdev;
struct regmap *regmap;
int i, ret;
regmap = devm_regmap_init_i2c(i2c, &isl9305_regmap);
if (IS_ERR(regmap)) {
ret = PTR_ERR(regmap);
dev_err(&i2c->dev, "Failed to create regmap: %d\n", ret);
return ret;
}
config.dev = &i2c->dev;
for (i = 0; i < ARRAY_SIZE(isl9305_regulators); i++) {
if (pdata)
config.init_data = pdata->init_data[i];
else
config.init_data = NULL;
rdev = devm_regulator_register(&i2c->dev,
&isl9305_regulators[i],
&config);
if (IS_ERR(rdev)) {
ret = PTR_ERR(rdev);
dev_err(&i2c->dev, "Failed to register %s: %d\n",
isl9305_regulators[i].name, ret);
return ret;
}
}
return 0;
}
#ifdef CONFIG_OF
static const struct of_device_id isl9305_dt_ids[] = {
{ .compatible = "isl,isl9305" }, /* for backward compat., don't use */
{ .compatible = "isil,isl9305" },
{ .compatible = "isl,isl9305h" }, /* for backward compat., don't use */
{ .compatible = "isil,isl9305h" },
{},
};
#endif
static const struct i2c_device_id isl9305_i2c_id[] = {
{ "isl9305", },
{ "isl9305h", },
{ }
};
MODULE_DEVICE_TABLE(i2c, isl9305_i2c_id);
static struct i2c_driver isl9305_regulator_driver = {
.driver = {
.name = "isl9305",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(isl9305_dt_ids),
},
.probe = isl9305_i2c_probe,
.id_table = isl9305_i2c_id,
};
module_i2c_driver(isl9305_regulator_driver);
MODULE_AUTHOR("Mark Brown");
MODULE_DESCRIPTION("Intersil ISL9305 DCDC regulator");
MODULE_LICENSE("GPL");