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Message-Id: <1354758949-29186-1-git-send-email-qingx@marvell.com>
Date: Thu, 6 Dec 2012 09:55:49 +0800
From: Qing Xu <qingx@...vell.com>
To: qingx@...vell.com, sameo@...ux.intel.com, haojian.zhuang@...il.com,
grant.likely@...retlab.ca, rob.herring@...xeda.com,
rob@...dley.net, zhouqiao@...vell.com, cxie4@...vell.com,
linux-kernel@...r.kernel.org
Subject: [PATCH] mfd: 88pm80x: add dt support
From: Qing Xu <qingx@...vell.com>
add dt support for 88pm800 and 88pm805
Signed-off-by: Qing Xu <qingx@...vell.com>
---
Documentation/devicetree/bindings/mfd/88pm80x.txt | 52 +++++++++++++++++++++
drivers/mfd/88pm800.c | 26 +++++++++-
drivers/mfd/88pm805.c | 26 +++++++++-
drivers/mfd/88pm80x.c | 32 +++++++++++++
include/linux/mfd/88pm80x.h | 3 +
5 files changed, 133 insertions(+), 6 deletions(-)
create mode 100644 Documentation/devicetree/bindings/mfd/88pm80x.txt
diff --git a/Documentation/devicetree/bindings/mfd/88pm80x.txt b/Documentation/devicetree/bindings/mfd/88pm80x.txt
new file mode 100644
index 0000000..8a0ed07
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/88pm80x.txt
@@ -0,0 +1,52 @@
+* Marvell 88pm80x Power Management IC
+
+Required parent device properties:
+- compatible : "marvell,88pm80x"
+- reg : the I2C slave address for the 88pm80x chip
+- interrupts : IRQ line for the 88pm80x chip
+- interrupt-controller: describes the 88pm80x as an interrupt controller (has its own domain)
+- #interrupt-cells : should be 1.
+ - The cell is the 88pm80x local IRQ number
+
+Optional parent device properties:
+- marvell,88pm80x-irqmode: inicates whether interrupt status is cleared by read
+- marvell,88pm80x-poweraddr: 88pm80x are multi-chips solution. <reg> stores the I2C address
+ of one chip, and this property stores the I2C address of
+ power related chip.
+- marvell,88pm80x-gpadcaddr: 88pm80x are multi-chips solution. <reg> stores the I2C address
+ of one chip, and this property stores the I2C address of
+ gpadc related chip.
+
+88pm80x consists of various groups of sub-devices:
+
+Device Supply Names Description
+------ ------------ -----------
+88pm80x-onkey : : On key
+88pm80x-rtc : : RTC
+
+Example:
+ pmic: 88pm800@30 {
+ compatible = "marvell,88pm80x";
+ reg = <0x30>;
+ interrupts = <4>;
+ interrupt-parent = <&intc>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ marvell,88pm80x-irqmode = 0;
+ marvell,88pm80x-poweraddr = <0x31>;
+ marvell,88pm80x-gpadcaddr = <0x32>;
+ };
+
+
+ pmic: 88pm805@38 {
+ compatible = "marvell,88pm80x";
+ reg = <0x38>;
+ interrupts = <124>;
+ interrupt-parent = <&gpio>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ marvell,88pm80x-irqmode = 0;
+ };
+
diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
index 3fcc8dd..20b67d7 100644
--- a/drivers/mfd/88pm800.c
+++ b/drivers/mfd/88pm800.c
@@ -506,6 +506,22 @@ static int __devinit pm800_probe(struct i2c_client *client,
struct pm80x_chip *chip;
struct pm80x_platform_data *pdata = client->dev.platform_data;
struct pm80x_subchip *subchip;
+ struct device_node *node = client->dev.of_node;
+
+ if (node && !pdata) {
+ /* parse DT to get platform data */
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct pm80x_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ ret = pm80x_dt_init(node, &client->dev, pdata);
+ if (ret)
+ return -EINVAL;
+ } else if (!pdata) {
+ pr_info("No platform data in %s!\n", __func__);
+ return -EINVAL;
+ }
ret = pm80x_init(client, id);
if (ret) {
@@ -540,9 +556,6 @@ static int __devinit pm800_probe(struct i2c_client *client,
goto err_800_init;
}
- if (pdata->plat_config)
- pdata->plat_config(chip, pdata);
-
return 0;
err_800_init:
@@ -570,11 +583,18 @@ static int __devexit pm800_remove(struct i2c_client *client)
return 0;
}
+static const struct of_device_id pm800_dt_ids[] = {
+ { .compatible = "marvell,88pm800", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pm800_dt_ids);
+
static struct i2c_driver pm800_driver = {
.driver = {
.name = "88PM800",
.owner = THIS_MODULE,
.pm = &pm80x_pm_ops,
+ .of_match_table = of_match_ptr(pm800_dt_ids),
},
.probe = pm800_probe,
.remove = __devexit_p(pm800_remove),
diff --git a/drivers/mfd/88pm805.c b/drivers/mfd/88pm805.c
index 39a91bd..b0fb3ff 100644
--- a/drivers/mfd/88pm805.c
+++ b/drivers/mfd/88pm805.c
@@ -239,6 +239,22 @@ static int __devinit pm805_probe(struct i2c_client *client,
int ret = 0;
struct pm80x_chip *chip;
struct pm80x_platform_data *pdata = client->dev.platform_data;
+ struct device_node *node = client->dev.of_node;
+
+ if (node && !pdata) {
+ /* parse DT to get platform data */
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct pm80x_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ ret = pm80x_dt_init(node, &client->dev, pdata);
+ if (ret)
+ return -EINVAL;
+ } else if (!pdata) {
+ pr_info("No platform data in %s!\n", __func__);
+ return -EINVAL;
+ }
ret = pm80x_init(client, id);
if (ret) {
@@ -254,9 +270,6 @@ static int __devinit pm805_probe(struct i2c_client *client,
goto err_805_init;
}
- if (pdata->plat_config)
- pdata->plat_config(chip, pdata);
-
return 0;
err_805_init:
@@ -277,11 +290,18 @@ static int __devexit pm805_remove(struct i2c_client *client)
return 0;
}
+static const struct of_device_id pm805_dt_ids[] = {
+ { .compatible = "marvell,88pm805", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pm805_dt_ids);
+
static struct i2c_driver pm805_driver = {
.driver = {
.name = "88PM805",
.owner = THIS_MODULE,
.pm = &pm80x_pm_ops,
+ .of_match_table = of_match_ptr(pm805_dt_ids),
},
.probe = pm805_probe,
.remove = __devexit_p(pm805_remove),
diff --git a/drivers/mfd/88pm80x.c b/drivers/mfd/88pm80x.c
index 1adb355..ad42d2a 100644
--- a/drivers/mfd/88pm80x.c
+++ b/drivers/mfd/88pm80x.c
@@ -111,6 +111,38 @@ int pm80x_deinit(struct i2c_client *client)
}
EXPORT_SYMBOL_GPL(pm80x_deinit);
+int pm80x_dt_init(struct device_node *np,
+ struct device *dev,
+ struct pm80x_platform_data *pdata)
+{
+ int ret;
+ ret = of_property_read_u32(np, "marvell,88pm80x-irqmode",
+ &pdata->irq_mode);
+ if (ret) {
+ dev_err(dev, "Not found \"marvell,88pm80x-irqmode\" "
+ "property\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32(np, "marvell,88pm80x-poweraddr",
+ (u32*)(&pdata->power_page_addr));
+ if (ret) {
+ dev_err(dev, "Not found \"marvell,88pm80x-poweraddr\" "
+ "property\n");
+ return 0;
+ }
+
+ ret = of_property_read_u32(np, "marvell,88pm80x-gpadcaddr",
+ (u32*)(&pdata->gpadc_page_addr));
+ if (ret) {
+ dev_err(dev, "Not found \"marvell,88pm80x-gpadcaddr\" "
+ "property\n");
+ return 0;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(pm80x_dt_init);
+
#ifdef CONFIG_PM_SLEEP
static int pm80x_suspend(struct device *dev)
{
diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h
index 904efb9..153f492 100644
--- a/include/linux/mfd/88pm80x.h
+++ b/include/linux/mfd/88pm80x.h
@@ -367,4 +367,7 @@ static inline int pm80x_dev_resume(struct device *dev)
extern int pm80x_init(struct i2c_client *client,
const struct i2c_device_id *id) __devinit;
extern int pm80x_deinit(struct i2c_client *client);
+extern int pm80x_dt_init(struct device_node *np,
+ struct device *dev,
+ struct pm80x_platform_data *pdata);
#endif /* __LINUX_MFD_88PM80X_H */
--
1.7.0.4
--
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