[PATCH 1/4] mfd: tps65090: add DT support for tps65090
Laxman Dewangan
ldewangan at nvidia.com
Fri Dec 28 20:29:38 EST 2012
Add device tree support for the TI PMIC TPS65090.
The device can be registered through platform or DT.
Add device tree binding document for this device.
Signed-off-by: Laxman Dewangan <ldewangan at nvidia.com>
---
.../devicetree/bindings/regulator/tps65090.txt | 121 ++++++++++++++++++++
drivers/mfd/tps65090.c | 52 ++++++++-
include/linux/mfd/tps65090.h | 1 +
3 files changed, 172 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/regulator/tps65090.txt
diff --git a/Documentation/devicetree/bindings/regulator/tps65090.txt b/Documentation/devicetree/bindings/regulator/tps65090.txt
new file mode 100644
index 0000000..e81f47d
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/tps65090.txt
@@ -0,0 +1,121 @@
+TPS65090 regulators
+
+Required properties:
+- compatible: "ti,tps65090"
+- reg: I2C slave address
+- interrupts: the interrupt outputs of the controller
+- regulators: A node that houses a sub-node for each regulator within the
+ device. Each sub-node is identified using the node's name (or the deprecated
+ regulator-compatible property if present), with valid values listed below.
+ The content of each sub-node is defined by the standard binding for
+ regulators; see regulator.txt.
+ dcdc[1-3], fet[1-7] and ldo[1-2] respectively.
+- vsys[1-3]-supply: The input supply for DCDC[1-3] respectively.
+- infet[1-7]-supply: The input supply for FET[1-7] respectively.
+- vsys_l[1-2]-supply: The input supply for LDO[1-2] respectively.
+
+Optional properties:
+- ti,enable-ext-control: This is applicable for DCDC1, DCDC2 and DCDC3.
+ If DCDCs are externally controlled then this property should be there.
+- gpio: This is applicable for DCDC1, DCDC2 and DCDC3. If DCDCs are
+ extrenally controlled and if it is from GPIO then gpio number should
+ be provided. If it is externally controlled and no gpio entry then
+ driver will just configure this rails as external control and will not
+ provide any enable/disable APIs.
+
+Each regulator is defined using the standard binding for regulators.
+
+Example:
+
+ tps65090 at 48 {
+ compatible = "ti,tps65090";
+ reg = <0x48>;
+ interrupts = <0 88 0x4>;
+
+ vsys1-supply = <&some_reg>;
+ vsys2-supply = <&some_reg>;
+ vsys3-supply = <&some_reg>;
+ infet1-supply = <&some_reg>;
+ infet2-supply = <&some_reg>;
+ infet3-supply = <&some_reg>;
+ infet4-supply = <&some_reg>;
+ infet5-supply = <&some_reg>;
+ infet6-supply = <&some_reg>;
+ infet7-supply = <&some_reg>;
+ vsys_l1-supply = <&some_reg>;
+ vsys_l2-supply = <&some_reg>;
+
+ regulators {
+ dcdc1 {
+ regulator-name = "dcdc1";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ dcdc2 {
+ regulator-name = "dcdc2";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ dcdc3 {
+ regulator-name = "dcdc3";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet1 {
+ regulator-name = "fet1";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet2 {
+ regulator-name = "fet2";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet3 {
+ regulator-name = "fet3";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet4 {
+ regulator-name = "fet4";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet5 {
+ regulator-name = "fet5";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet6 {
+ regulator-name = "fet6";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ fet7 {
+ regulator-name = "fet7";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo1 {
+ regulator-name = "ldo1";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ ldo2 {
+ regulator-name = "ldo2";
+ regulator-boot-on;
+ regulator-always-on;
+ };
+ };
+ };
diff --git a/drivers/mfd/tps65090.c b/drivers/mfd/tps65090.c
index 8d12a8e..e4cf030 100644
--- a/drivers/mfd/tps65090.c
+++ b/drivers/mfd/tps65090.c
@@ -25,6 +25,8 @@
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tps65090.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/err.h>
#define NUM_INT_REG 2
@@ -148,6 +150,37 @@ static const struct regmap_config tps65090_regmap_config = {
.volatile_reg = is_volatile_reg,
};
+#ifdef CONFIG_OF
+static const struct of_device_id tps65090_of_match[] = {
+ { .compatible = "ti,tps65090",},
+ {},
+};
+MODULE_DEVICE_TABLE(of, tps65090_of_match);
+
+static struct tps65090_platform_data *
+ of_get_tps65090_platform_data(struct device *dev)
+{
+ struct tps65090_platform_data *pdata;
+
+ pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(dev, "Memory alloc failed for platform data\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ /*
+ * Nothing to set/parse here as DT parsing of regulators will be
+ * done in regulator driver.
+ */
+ return pdata;
+}
+#else
+static struct tps65090_platform_data *
+ of_get_tps65090_platform_data(struct device *dev)
+{
+ return NULL;
+}
+#endif
+
static int tps65090_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -155,9 +188,22 @@ static int tps65090_i2c_probe(struct i2c_client *client,
struct tps65090 *tps65090;
int ret;
- if (!pdata) {
+ if (client->dev.of_node) {
+ const struct of_device_id *match;
+
+ match = of_match_device(of_match_ptr(tps65090_of_match),
+ &client->dev);
+ if (!match) {
+ dev_err(&client->dev, "No match device found\n");
+ return -ENODEV;
+ }
+ }
+
+ if (!pdata && client->dev.of_node)
+ pdata = of_get_tps65090_platform_data(&client->dev);
+ if (IS_ERR_OR_NULL(pdata)) {
dev_err(&client->dev, "tps65090 requires platform data\n");
- return -EINVAL;
+ return (pdata) ? PTR_ERR(pdata) : -EINVAL;
}
tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
@@ -167,6 +213,7 @@ static int tps65090_i2c_probe(struct i2c_client *client,
}
tps65090->dev = &client->dev;
+ tps65090->pdata = pdata;
i2c_set_clientdata(client, tps65090);
tps65090->rmap = devm_regmap_init_i2c(client, &tps65090_regmap_config);
@@ -247,6 +294,7 @@ static struct i2c_driver tps65090_driver = {
.driver = {
.name = "tps65090",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tps65090_of_match),
.pm = &tps65090_pm_ops,
},
.probe = tps65090_i2c_probe,
diff --git a/include/linux/mfd/tps65090.h b/include/linux/mfd/tps65090.h
index 6694cf4..4403c54 100644
--- a/include/linux/mfd/tps65090.h
+++ b/include/linux/mfd/tps65090.h
@@ -67,6 +67,7 @@ struct tps65090 {
struct device *dev;
struct regmap *rmap;
struct regmap_irq_chip_data *irq_data;
+ struct tps65090_platform_data *pdata;
};
/*
--
1.7.1.1
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