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Message-ID: <1356686981-4152-2-git-send-email-ldewangan@nvidia.com>
Date: Fri, 28 Dec 2012 14:59:38 +0530
From: Laxman Dewangan <ldewangan@...dia.com>
To: <broonie@...nsource.wolfsonmicro.com>, <sameo@...ux.intel.com>
CC: <grant.likely@...retlab.ca>, <rob.herring@...xeda.com>,
<rob@...dley.net>, <lrg@...com>,
<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
Laxman Dewangan <ldewangan@...dia.com>
Subject: [PATCH 1/4] mfd: tps65090: add DT support for tps65090
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@...dia.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@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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