forked from luck/tmp_suning_uos_patched
Merge remote-tracking branch 'regulator/topic/max8973' into regulator-next
This commit is contained in:
commit
5ee6c72880
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@ -0,0 +1,21 @@
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* Maxim MAX8973 Voltage Regulator
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Required properties:
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- compatible: must be "maxim,max8973"
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- reg: the i2c slave address of the regulator. It should be 0x1b.
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Any standard regulator properties can be used to configure the single max8973
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DCDC.
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Example:
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max8973@1b {
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compatible = "maxim,max8973";
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reg = <0x1b>;
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regulator-min-microvolt = <935000>;
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regulator-max-microvolt = <1200000>;
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regulator-boot-on;
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regulator-always-on;
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};
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@ -26,10 +26,12 @@
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/max8973-regulator.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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@ -100,6 +102,7 @@ struct max8973_chip {
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int curr_vout_reg;
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int curr_gpio_val;
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bool valid_dvs_gpio;
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struct regulator_ops ops;
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};
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/*
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@ -240,7 +243,7 @@ static unsigned int max8973_dcdc_get_mode(struct regulator_dev *rdev)
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REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
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}
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static struct regulator_ops max8973_dcdc_ops = {
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static const struct regulator_ops max8973_dcdc_ops = {
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.get_voltage_sel = max8973_dcdc_get_voltage_sel,
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.set_voltage_sel = max8973_dcdc_set_voltage_sel,
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.list_voltage = regulator_list_voltage_linear,
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@ -369,7 +372,8 @@ static int max8973_probe(struct i2c_client *client,
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int ret;
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pdata = client->dev.platform_data;
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if (!pdata) {
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if (!pdata && !client->dev.of_node) {
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dev_err(&client->dev, "No Platform data");
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return -EIO;
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}
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@ -388,30 +392,36 @@ static int max8973_probe(struct i2c_client *client,
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}
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i2c_set_clientdata(client, max);
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max->ops = max8973_dcdc_ops;
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max->dev = &client->dev;
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max->desc.name = id->name;
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max->desc.id = 0;
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max->desc.ops = &max8973_dcdc_ops;
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max->desc.ops = &max->ops;
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max->desc.type = REGULATOR_VOLTAGE;
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max->desc.owner = THIS_MODULE;
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max->desc.min_uV = MAX8973_MIN_VOLATGE;
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max->desc.uV_step = MAX8973_VOLATGE_STEP;
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max->desc.n_voltages = MAX8973_BUCK_N_VOLTAGE;
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if (!pdata->enable_ext_control) {
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if (!pdata || !pdata->enable_ext_control) {
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max->desc.enable_reg = MAX8973_VOUT;
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max->desc.enable_mask = MAX8973_VOUT_ENABLE;
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max8973_dcdc_ops.enable = regulator_enable_regmap;
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max8973_dcdc_ops.disable = regulator_disable_regmap;
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max8973_dcdc_ops.is_enabled = regulator_is_enabled_regmap;
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max->ops.enable = regulator_enable_regmap;
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max->ops.disable = regulator_disable_regmap;
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max->ops.is_enabled = regulator_is_enabled_regmap;
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}
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if (pdata) {
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max->dvs_gpio = pdata->dvs_gpio;
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max->enable_external_control = pdata->enable_ext_control;
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max->curr_gpio_val = pdata->dvs_def_state;
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max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;
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} else {
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max->dvs_gpio = -EINVAL;
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max->curr_vout_reg = MAX8973_VOUT;
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}
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max->enable_external_control = pdata->enable_ext_control;
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max->dvs_gpio = pdata->dvs_gpio;
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max->curr_gpio_val = pdata->dvs_def_state;
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max->curr_vout_reg = MAX8973_VOUT + pdata->dvs_def_state;
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max->lru_index[0] = max->curr_vout_reg;
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max->valid_dvs_gpio = false;
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if (gpio_is_valid(max->dvs_gpio)) {
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int gpio_flags;
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@ -437,16 +447,21 @@ static int max8973_probe(struct i2c_client *client,
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max->lru_index[i] = i;
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max->lru_index[0] = max->curr_vout_reg;
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max->lru_index[max->curr_vout_reg] = 0;
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} else {
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max->valid_dvs_gpio = false;
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}
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ret = max8973_init_dcdc(max, pdata);
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if (ret < 0) {
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dev_err(max->dev, "Max8973 Init failed, err = %d\n", ret);
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return ret;
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if (pdata) {
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ret = max8973_init_dcdc(max, pdata);
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if (ret < 0) {
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dev_err(max->dev, "Max8973 Init failed, err = %d\n", ret);
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return ret;
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}
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}
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config.dev = &client->dev;
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config.init_data = pdata->reg_init_data;
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config.init_data = pdata ? pdata->reg_init_data :
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of_get_regulator_init_data(&client->dev, client->dev.of_node);
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config.driver_data = max;
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config.of_node = client->dev.of_node;
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config.regmap = max->regmap;
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