mirror of https://gitee.com/openkylin/linux.git
tps6586x: Add device tree support
This commit adds device tree support for the TPS6586x regulator. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Thierry Reding
Mark Brown
parent
1c8fa58f47
commit
62f6b08793
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@ -0,0 +1,97 @@
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TPS6586x family of regulators
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Required properties:
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- compatible: "ti,tps6586x"
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- reg: I2C slave address
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- interrupts: the interrupt outputs of the controller
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- #gpio-cells: number of cells to describe a GPIO
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- gpio-controller: mark the device as a GPIO controller
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- regulators: list of regulators provided by this controller, must be named
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after their hardware counterparts: sm[0-2], ldo[0-9] and ldo_rtc
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Each regulator is defined using the standard binding for regulators.
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Example:
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pmu: tps6586x@34 {
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compatible = "ti,tps6586x";
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reg = <0x34>;
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interrupts = <0 88 0x4>;
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#gpio-cells = <2>;
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gpio-controller;
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regulators {
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sm0_reg: sm0 {
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regulator-min-microvolt = < 725000>;
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regulator-max-microvolt = <1500000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sm1_reg: sm1 {
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regulator-min-microvolt = < 725000>;
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regulator-max-microvolt = <1500000>;
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regulator-boot-on;
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regulator-always-on;
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};
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sm2_reg: sm2 {
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regulator-min-microvolt = <3000000>;
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regulator-max-microvolt = <4550000>;
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regulator-boot-on;
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regulator-always-on;
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};
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ldo0_reg: ldo0 {
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regulator-name = "PCIE CLK";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo1_reg: ldo1 {
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regulator-min-microvolt = < 725000>;
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regulator-max-microvolt = <1500000>;
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};
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ldo2_reg: ldo2 {
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regulator-min-microvolt = < 725000>;
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regulator-max-microvolt = <1500000>;
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};
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ldo3_reg: ldo3 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo4_reg: ldo4 {
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regulator-min-microvolt = <1700000>;
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regulator-max-microvolt = <2475000>;
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};
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ldo5_reg: ldo5 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo6_reg: ldo6 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo7_reg: ldo7 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo8_reg: ldo8 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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ldo9_reg: ldo9 {
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regulator-min-microvolt = <1250000>;
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regulator-max-microvolt = <3300000>;
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};
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};
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};
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@ -23,6 +23,7 @@
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tps6586x.h>
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@ -460,6 +461,7 @@ static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x,
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pdev->dev.parent = tps6586x->dev;
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pdev->dev.platform_data = subdev->platform_data;
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pdev->dev.of_node = subdev->of_node;
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ret = platform_device_add(pdev);
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if (ret) {
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@ -474,6 +476,86 @@ static int __devinit tps6586x_add_subdevs(struct tps6586x *tps6586x,
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return ret;
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}
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#ifdef CONFIG_OF
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static struct of_regulator_match tps6586x_matches[] = {
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{ .name = "sm0", .driver_data = (void *)TPS6586X_ID_SM_0 },
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{ .name = "sm1", .driver_data = (void *)TPS6586X_ID_SM_1 },
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{ .name = "sm2", .driver_data = (void *)TPS6586X_ID_SM_2 },
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{ .name = "ldo0", .driver_data = (void *)TPS6586X_ID_LDO_0 },
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{ .name = "ldo1", .driver_data = (void *)TPS6586X_ID_LDO_1 },
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{ .name = "ldo2", .driver_data = (void *)TPS6586X_ID_LDO_2 },
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{ .name = "ldo3", .driver_data = (void *)TPS6586X_ID_LDO_3 },
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{ .name = "ldo4", .driver_data = (void *)TPS6586X_ID_LDO_4 },
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{ .name = "ldo5", .driver_data = (void *)TPS6586X_ID_LDO_5 },
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{ .name = "ldo6", .driver_data = (void *)TPS6586X_ID_LDO_6 },
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{ .name = "ldo7", .driver_data = (void *)TPS6586X_ID_LDO_7 },
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{ .name = "ldo8", .driver_data = (void *)TPS6586X_ID_LDO_8 },
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{ .name = "ldo9", .driver_data = (void *)TPS6586X_ID_LDO_9 },
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{ .name = "ldo_rtc", .driver_data = (void *)TPS6586X_ID_LDO_RTC },
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};
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static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
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{
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const unsigned int num = ARRAY_SIZE(tps6586x_matches);
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struct device_node *np = client->dev.of_node;
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struct tps6586x_platform_data *pdata;
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struct tps6586x_subdev_info *devs;
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struct device_node *regs;
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unsigned int count;
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unsigned int i, j;
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int err;
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regs = of_find_node_by_name(np, "regulators");
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if (!regs)
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return NULL;
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err = of_regulator_match(&client->dev, regs, tps6586x_matches, num);
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if (err < 0) {
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of_node_put(regs);
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return NULL;
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}
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of_node_put(regs);
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count = err;
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devs = devm_kzalloc(&client->dev, count * sizeof(*devs), GFP_KERNEL);
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if (!devs)
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return NULL;
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for (i = 0, j = 0; i < num && j < count; i++) {
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if (!tps6586x_matches[i].init_data)
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continue;
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devs[j].name = "tps6586x-regulator";
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devs[j].platform_data = tps6586x_matches[i].init_data;
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devs[j].id = (int)tps6586x_matches[i].driver_data;
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devs[j].of_node = tps6586x_matches[i].of_node;
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j++;
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}
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pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
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if (!pdata)
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return NULL;
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pdata->num_subdevs = count;
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pdata->subdevs = devs;
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pdata->gpio_base = -1;
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pdata->irq_base = -1;
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return pdata;
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}
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static struct of_device_id tps6586x_of_match[] = {
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{ .compatible = "ti,tps6586x", },
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{ },
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};
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#else
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static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *client)
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{
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return NULL;
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}
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#endif
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static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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@ -481,6 +563,9 @@ static int __devinit tps6586x_i2c_probe(struct i2c_client *client,
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struct tps6586x *tps6586x;
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int ret;
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if (!pdata && client->dev.of_node)
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pdata = tps6586x_parse_dt(client);
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if (!pdata) {
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dev_err(&client->dev, "tps6586x requires platform data\n");
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return -ENOTSUPP;
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@ -573,6 +658,7 @@ static struct i2c_driver tps6586x_driver = {
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.driver = {
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.name = "tps6586x",
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.owner = THIS_MODULE,
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.of_match_table = of_match_ptr(tps6586x_of_match),
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},
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.probe = tps6586x_i2c_probe,
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.remove = __devexit_p(tps6586x_i2c_remove),
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@ -363,6 +363,7 @@ static int __devinit tps6586x_regulator_probe(struct platform_device *pdev)
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return err;
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config.dev = &pdev->dev;
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config.of_node = pdev->dev.of_node;
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config.init_data = pdev->dev.platform_data;
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config.driver_data = ri;
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@ -68,6 +68,7 @@ struct tps6586x_subdev_info {
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int id;
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const char *name;
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void *platform_data;
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struct device_node *of_node;
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};
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struct tps6586x_platform_data {
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