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regulator: tps62360: add dt support
Add dt support for the pmu device tps62360 and Add binding documentation with example. With this patch driver will support both device-tree and non-device tree registration. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Laxman Dewangan
Mark Brown
parent
8bdca009e6
commit
684ae39b91
@ -0,0 +1,45 @@
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TPS62360 Voltage regulators
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Required properties:
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- compatible: Must be one of the following.
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"ti,tps62360"
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"ti,tps62361",
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"ti,tps62362",
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"ti,tps62363",
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- reg: I2C slave address
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Optional properties:
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- ti,enable-force-pwm: Enable force PWM mode. This is boolean value.
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- ti,enable-vout-discharge: Enable output discharge. This is boolean value.
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- ti,enable-pull-down: Enable pull down. This is boolean value.
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- ti,vsel0-gpio: GPIO for controlling VSEL0 line.
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If this property is missing, then assume that there is no GPIO
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for vsel0 control.
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- ti,vsel1-gpio: Gpio for controlling VSEL1 line.
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If this property is missing, then assume that there is no GPIO
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for vsel1 control.
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- ti,vsel0-state-high: Inital state of vsel0 input is high.
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If this property is missing, then assume the state as low (0).
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- ti,vsel1-state-high: Inital state of vsel1 input is high.
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If this property is missing, then assume the state as low (0).
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Any property defined as part of the core regulator binding, defined in
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regulator.txt, can also be used.
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Example:
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abc: tps62360 {
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compatible = "ti,tps62361";
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reg = <0x60>;
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regulator-name = "tps62361-vout";
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regulator-min-microvolt = <500000>;
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regulator-max-microvolt = <1500000>;
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regulator-boot-on
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ti,vsel0-gpio = <&gpio1 16 0>;
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ti,vsel1-gpio = <&gpio1 17 0>;
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ti,vsel0-state-high;
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ti,vsel1-state-high;
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ti,enable-pull-down;
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ti,enable-force-pwm;
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ti,enable-vout-discharge;
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};
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@ -26,6 +26,10 @@
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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/of_device.h>
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#include <linux/of_gpio.h>
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#include <linux/regulator/of_regulator.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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@ -297,6 +301,56 @@ static const struct regmap_config tps62360_regmap_config = {
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.cache_type = REGCACHE_RBTREE,
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};
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static struct tps62360_regulator_platform_data *
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of_get_tps62360_platform_data(struct device *dev)
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{
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struct tps62360_regulator_platform_data *pdata;
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struct device_node *np = dev->of_node;
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pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata) {
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dev_err(dev, "Memory alloc failed for platform data\n");
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return NULL;
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}
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pdata->reg_init_data = of_get_regulator_init_data(dev, dev->of_node);
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if (!pdata->reg_init_data) {
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dev_err(dev, "Not able to get OF regulator init data\n");
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return NULL;
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}
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pdata->vsel0_gpio = of_get_named_gpio(np, "vsel0-gpio", 0);
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pdata->vsel1_gpio = of_get_named_gpio(np, "vsel1-gpio", 0);
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if (of_find_property(np, "ti,vsel0-state-high", NULL))
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pdata->vsel0_def_state = 1;
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if (of_find_property(np, "ti,vsel1-state-high", NULL))
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pdata->vsel1_def_state = 1;
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if (of_find_property(np, "ti,enable-pull-down", NULL))
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pdata->en_internal_pulldn = true;
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if (of_find_property(np, "ti,enable-force-pwm", NULL))
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pdata->en_force_pwm = true;
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if (of_find_property(np, "ti,enable-vout-discharge", NULL))
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pdata->en_discharge = true;
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return pdata;
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}
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#if defined(CONFIG_OF)
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static const struct of_device_id tps62360_of_match[] = {
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{ .compatible = "ti,tps62360", .data = (void *)TPS62360},
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{ .compatible = "ti,tps62361", .data = (void *)TPS62361},
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{ .compatible = "ti,tps62362", .data = (void *)TPS62362},
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{ .compatible = "ti,tps62363", .data = (void *)TPS62363},
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{},
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}
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MODULE_DEVICE_TABLE(of, tps62360_of_match);
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#endif
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static int __devinit tps62360_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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@ -306,8 +360,24 @@ static int __devinit tps62360_probe(struct i2c_client *client,
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struct tps62360_chip *tps;
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int ret;
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int i;
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int chip_id;
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pdata = client->dev.platform_data;
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chip_id = id->driver_data;
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if (client->dev.of_node) {
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const struct of_device_id *match;
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match = of_match_device(of_match_ptr(tps62360_of_match),
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&client->dev);
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if (!match) {
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dev_err(&client->dev, "Error: No device match found\n");
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return -ENODEV;
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}
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chip_id = (int)match->data;
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if (!pdata)
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pdata = of_get_tps62360_platform_data(&client->dev);
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}
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if (!pdata) {
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dev_err(&client->dev, "%s(): Platform data not found\n",
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__func__);
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@ -328,7 +398,7 @@ static int __devinit tps62360_probe(struct i2c_client *client,
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tps->vsel1_gpio = pdata->vsel1_gpio;
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tps->dev = &client->dev;
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switch (id->driver_data) {
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switch (chip_id) {
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case TPS62360:
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case TPS62362:
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tps->voltage_base = TPS62360_BASE_VOLTAGE;
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@ -484,6 +554,7 @@ static struct i2c_driver tps62360_i2c_driver = {
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.driver = {
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.name = "tps62360",
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.owner = THIS_MODULE,
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.of_match_table = of_match_ptr(tps62360_of_match),
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},
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.probe = tps62360_probe,
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.remove = __devexit_p(tps62360_remove),
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