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Date: Tue, 09 Apr 2013 13:03:05 +0200
From: Andrzej Hajda <a.hajda@...sung.com>
To: sameo@...ux.intel.com
Cc: linux-media@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
linux-kernel@...r.kernel.org, kyungmin.park@...sung.com,
s.nawrocki@...sung.com, Andrzej Hajda <a.hajda@...sung.com>
Subject: [PATCH] max77693: added device tree support
max77693 mfd main device uses only wakeup field
from max77693_platform_data. This field is mapped
to wakeup-source common property in device tree.
Signed-off-by: Andrzej Hajda <a.hajda@...sung.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
---
Hi Samuel,
This is "max77693: added device tree support" patch rebased to mfd-next/master.
I have added Documentation/devicetree/bindings/mfd/max77693.txt.
Thanks for the review.
Regards
Andrzej
Documentation/devicetree/bindings/mfd/max77693.txt | 31 ++++++++++++
drivers/mfd/max77693.c | 50 +++++++++++++++-----
2 files changed, 68 insertions(+), 13 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/max77693.txt
diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
new file mode 100644
index 0000000..a7213b7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -0,0 +1,31 @@
+Maxim MAX77693 multi-function device
+
+MAX77686 is a Mulitifunction device with the following submodules:
+- PMIC,
+- Charger,
+- LED,
+- MUIC,
+- HAPTIC.
+
+It is interfaced to host controller using i2c.
+This document describes the bindings for the mfd device.
+
+Required properties:
+- compatible : Must be "maxim,max77693".
+- reg : Specifies the i2c slave address of PMIC block.
+- interrupts : This i2c device has an IRQ line connected to the main SoC.
+- interrupt-parent : The parent interrupt controller.
+
+Optional properties:
+- wakeup-source : Indicates if the device can wakeup the system from the sleep
+ state.
+
+Example:
+max77693@66 {
+ compatible = "maxim,max77693";
+ reg = <0x66>;
+ interrupt-parent = <&gpx1>;
+ interrupts = <5 0>;
+ wakeup-source;
+ };
+};
diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
index 9e60fed..6045706 100644
--- a/drivers/mfd/max77693.c
+++ b/drivers/mfd/max77693.c
@@ -106,29 +106,41 @@ static const struct regmap_config max77693_regmap_config = {
.max_register = MAX77693_PMIC_REG_END,
};
+static int max77693_get_platform_data(struct max77693_dev *max77693,
+ struct device *dev)
+{
+ struct device_node *node = dev->of_node;
+ struct max77693_platform_data *pdata = dev->platform_data;
+
+ if (node) {
+ max77693->wakeup = of_property_read_bool(node, "wakeup-source");
+ return 0;
+ }
+
+ if (pdata) {
+ max77693->wakeup = pdata->wakeup;
+ return 0;
+ }
+
+ dev_err(dev, "No platform data found.\n");
+ return -EINVAL;
+}
+
static int max77693_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct max77693_dev *max77693;
- struct max77693_platform_data *pdata = i2c->dev.platform_data;
u8 reg_data;
int ret = 0;
- if (!pdata) {
- dev_err(&i2c->dev, "No platform data found.\n");
- return -EINVAL;
- }
-
max77693 = devm_kzalloc(&i2c->dev,
sizeof(struct max77693_dev), GFP_KERNEL);
if (max77693 == NULL)
return -ENOMEM;
- i2c_set_clientdata(i2c, max77693);
- max77693->dev = &i2c->dev;
- max77693->i2c = i2c;
- max77693->irq = i2c->irq;
- max77693->type = id->driver_data;
+ ret = max77693_get_platform_data(max77693, &i2c->dev);
+ if (ret < 0)
+ return ret;
max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
if (IS_ERR(max77693->regmap)) {
@@ -138,7 +150,11 @@ static int max77693_i2c_probe(struct i2c_client *i2c,
return ret;
}
- max77693->wakeup = pdata->wakeup;
+ i2c_set_clientdata(i2c, max77693);
+ max77693->dev = &i2c->dev;
+ max77693->i2c = i2c;
+ max77693->irq = i2c->irq;
+ max77693->type = id->driver_data;
ret = max77693_read_reg(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,
®_data);
@@ -179,7 +195,7 @@ static int max77693_i2c_probe(struct i2c_client *i2c,
if (ret < 0)
goto err_mfd;
- device_init_wakeup(max77693->dev, pdata->wakeup);
+ device_init_wakeup(max77693->dev, max77693->wakeup);
return ret;
@@ -235,11 +251,19 @@ static const struct dev_pm_ops max77693_pm = {
.resume = max77693_resume,
};
+#ifdef CONFIG_OF
+static struct of_device_id max77693_dt_match[] = {
+ {.compatible = "maxim,max77693"},
+ {},
+};
+#endif
+
static struct i2c_driver max77693_i2c_driver = {
.driver = {
.name = "max77693",
.owner = THIS_MODULE,
.pm = &max77693_pm,
+ .of_match_table = of_match_ptr(max77693_dt_match),
},
.probe = max77693_i2c_probe,
.remove = max77693_i2c_remove,
--
1.7.10.4
--
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