regulator: da9211: support DA9213
This is a patch for supporting DA9213. Signed-off-by: James Ban <james.ban.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -199,13 +199,14 @@ config REGULATOR_DA9210
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interface.
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config REGULATOR_DA9211
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tristate "Dialog Semiconductor DA9211/DA9212 regulator"
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tristate "Dialog Semiconductor DA9211/DA9212/DA9213/DA9214 regulator"
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depends on I2C
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select REGMAP_I2C
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help
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Say y here to support for the Dialog Semiconductor DA9211/DA9212.
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The DA9211/DA9212 is a multi-phase synchronous step down
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converter 12A DC-DC Buck controlled through an I2C
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Say y here to support for the Dialog Semiconductor DA9211/DA9212
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/DA9213/DA9214.
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The DA9211/DA9212/DA9213/DA9214 is a multi-phase synchronous
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step down converter 12A or 16A DC-DC Buck controlled through an I2C
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interface.
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config REGULATOR_DBX500_PRCMU
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@ -1,5 +1,5 @@
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/*
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* da9211-regulator.c - Regulator device driver for DA9211
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* da9211-regulator.c - Regulator device driver for DA9211/DA9213
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* Copyright (C) 2014 Dialog Semiconductor Ltd.
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*
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* This library is free software; you can redistribute it and/or
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@ -27,6 +27,10 @@
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#include <linux/regulator/da9211.h>
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#include "da9211-regulator.h"
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/* DEVICE IDs */
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#define DA9211_DEVICE_ID 0x22
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#define DA9213_DEVICE_ID 0x23
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#define DA9211_BUCK_MODE_SLEEP 1
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#define DA9211_BUCK_MODE_SYNC 2
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#define DA9211_BUCK_MODE_AUTO 3
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@ -42,6 +46,7 @@ struct da9211 {
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struct regulator_dev *rdev[DA9211_MAX_REGULATORS];
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int num_regulator;
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int chip_irq;
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int chip_id;
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};
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static const struct regmap_range_cfg da9211_regmap_range[] = {
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@ -52,14 +57,14 @@ static const struct regmap_range_cfg da9211_regmap_range[] = {
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.window_start = 0,
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.window_len = 256,
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.range_min = 0,
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.range_max = 2*256,
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.range_max = 5*128,
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},
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};
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static const struct regmap_config da9211_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = 2 * 256,
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.max_register = 5 * 128,
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.ranges = da9211_regmap_range,
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.num_ranges = ARRAY_SIZE(da9211_regmap_range),
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};
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@ -69,11 +74,20 @@ static const struct regmap_config da9211_regmap_config = {
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#define DA9211_MAX_MV 1570
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#define DA9211_STEP_MV 10
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/* Current limits for buck (uA) indices corresponds with register values */
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/* Current limits for DA9211 buck (uA) indices
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* corresponds with register values
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*/
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static const int da9211_current_limits[] = {
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2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000,
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3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000
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};
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/* Current limits for DA9213 buck (uA) indices
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* corresponds with register values
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*/
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static const int da9213_current_limits[] = {
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3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
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4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
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};
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static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev)
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{
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@ -129,12 +143,26 @@ static int da9211_set_current_limit(struct regulator_dev *rdev, int min,
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{
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int id = rdev_get_id(rdev);
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struct da9211 *chip = rdev_get_drvdata(rdev);
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int i;
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int i, max_size;
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const int *current_limits;
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switch (chip->chip_id) {
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case DA9211:
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current_limits = da9211_current_limits;
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max_size = ARRAY_SIZE(da9211_current_limits)-1;
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break;
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case DA9213:
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current_limits = da9213_current_limits;
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max_size = ARRAY_SIZE(da9213_current_limits)-1;
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break;
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default:
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return -EINVAL;
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}
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/* search for closest to maximum */
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for (i = ARRAY_SIZE(da9211_current_limits)-1; i >= 0; i--) {
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if (min <= da9211_current_limits[i] &&
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max >= da9211_current_limits[i]) {
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for (i = max_size; i >= 0; i--) {
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if (min <= current_limits[i] &&
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max >= current_limits[i]) {
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return regmap_update_bits(chip->regmap,
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DA9211_REG_BUCK_ILIM,
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(0x0F << id*4), (i << id*4));
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@ -150,14 +178,28 @@ static int da9211_get_current_limit(struct regulator_dev *rdev)
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struct da9211 *chip = rdev_get_drvdata(rdev);
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unsigned int data;
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int ret;
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const int *current_limits;
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switch (chip->chip_id) {
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case DA9211:
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current_limits = da9211_current_limits;
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break;
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case DA9213:
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current_limits = da9213_current_limits;
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break;
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default:
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return -EINVAL;
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}
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ret = regmap_read(chip->regmap, DA9211_REG_BUCK_ILIM, &data);
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if (ret < 0)
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return ret;
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/* select one of 16 values: 0000 (2000mA) to 1111 (5000mA) */
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/* select one of 16 values: 0000 (2000mA or 3000mA)
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* to 1111 (5000mA or 6000mA).
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*/
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data = (data >> id*4) & 0x0F;
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return da9211_current_limits[data];
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return current_limits[data];
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}
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static struct regulator_ops da9211_buck_ops = {
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@ -264,10 +306,7 @@ static int da9211_regulator_init(struct da9211 *chip)
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}
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for (i = 0; i < chip->num_regulator; i++) {
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if (chip->pdata)
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config.init_data =
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&(chip->pdata->init_data[i]);
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config.init_data = &(chip->pdata->init_data[i]);
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config.dev = chip->dev;
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config.driver_data = chip;
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config.regmap = chip->regmap;
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@ -301,6 +340,7 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
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{
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struct da9211 *chip;
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int error, ret;
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unsigned int data;
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chip = devm_kzalloc(&i2c->dev, sizeof(struct da9211), GFP_KERNEL);
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@ -308,7 +348,7 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
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chip->regmap = devm_regmap_init_i2c(i2c, &da9211_regmap_config);
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if (IS_ERR(chip->regmap)) {
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error = PTR_ERR(chip->regmap);
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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dev_err(chip->dev, "Failed to allocate register map: %d\n",
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error);
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return error;
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}
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@ -316,8 +356,22 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
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i2c_set_clientdata(i2c, chip);
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chip->pdata = i2c->dev.platform_data;
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if (!chip->pdata) {
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dev_err(&i2c->dev, "No platform init data supplied\n");
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ret = regmap_read(chip->regmap, DA9211_REG_DEVICE_ID, &data);
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if (ret < 0) {
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dev_err(chip->dev, "Failed to read DEVICE_ID reg: %d\n", ret);
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return ret;
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}
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switch (data) {
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case DA9211_DEVICE_ID:
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chip->chip_id = DA9211;
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break;
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case DA9213_DEVICE_ID:
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chip->chip_id = DA9213;
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break;
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default:
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dev_err(chip->dev, "Unsupported device id = 0x%x.\n", data);
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return -ENODEV;
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}
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@ -340,13 +394,14 @@ static int da9211_i2c_probe(struct i2c_client *i2c,
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ret = da9211_regulator_init(chip);
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if (ret < 0)
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dev_err(&i2c->dev, "Failed to initialize regulator: %d\n", ret);
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dev_err(chip->dev, "Failed to initialize regulator: %d\n", ret);
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return ret;
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}
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static const struct i2c_device_id da9211_i2c_id[] = {
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{"da9211", 0},
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{"da9211", DA9211},
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{"da9213", DA9213},
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{},
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};
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@ -364,5 +419,5 @@ static struct i2c_driver da9211_regulator_driver = {
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module_i2c_driver(da9211_regulator_driver);
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MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>");
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MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211");
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MODULE_DESCRIPTION("Regulator device driver for Dialog DA9211/DA9213");
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MODULE_LICENSE("GPL v2");
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@ -1,5 +1,5 @@
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/*
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* da9211-regulator.h - Regulator definitions for DA9211
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* da9211-regulator.h - Regulator definitions for DA9211/DA9213
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* Copyright (C) 2014 Dialog Semiconductor Ltd.
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*
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* This library is free software; you can redistribute it and/or
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@ -53,12 +53,15 @@
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/* BUCK Phase Selection*/
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#define DA9211_REG_CONFIG_E 0x147
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/* Device ID */
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#define DA9211_REG_DEVICE_ID 0x201
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/*
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* Registers bits
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*/
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/* DA9211_REG_PAGE_CON (addr=0x00) */
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#define DA9211_REG_PAGE_SHIFT 1
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#define DA9211_REG_PAGE_MASK 0x02
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#define DA9211_REG_PAGE_MASK 0x06
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/* On I2C registers 0x00 - 0xFF */
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#define DA9211_REG_PAGE0 0
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/* On I2C registers 0x100 - 0x1FF */
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/*
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* da9211.h - Regulator device driver for DA9211
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* da9211.h - Regulator device driver for DA9211/DA9213
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* Copyright (C) 2014 Dialog Semiconductor Ltd.
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*
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* This library is free software; you can redistribute it and/or
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@ -20,6 +20,11 @@
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#define DA9211_MAX_REGULATORS 2
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enum da9211_chip_id {
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DA9211,
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DA9213,
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};
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struct da9211_pdata {
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/*
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* Number of buck
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