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authorHaojian Zhuang <haojian.zhuang@gmail.com>2012-09-21 18:06:52 +0800
committerSamuel Ortiz <sameo@linux.intel.com>2012-10-02 11:43:13 +0200
commit2e57d56747e601b3e0ff6697e524025d0504d161 (patch)
tree29a7c677878d39f64e90dfbdf7063a11c08d4c15 /drivers/mfd
parent837c8293ba24d08cd7438d82ad9bb8d2fb0f8a5b (diff)
downloadop-kernel-dev-2e57d56747e601b3e0ff6697e524025d0504d161.zip
op-kernel-dev-2e57d56747e601b3e0ff6697e524025d0504d161.tar.gz
mfd: 88pm860x: Device tree support
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/88pm860x-core.c62
1 files changed, 53 insertions, 9 deletions
diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index 5b56fe8..fdaf686 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -16,6 +16,8 @@
#include <linux/irq.h>
#include <linux/interrupt.h>
#include <linux/irqdomain.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
@@ -1112,12 +1114,6 @@ static void __devexit pm860x_device_exit(struct pm860x_chip *chip)
mfd_remove_devices(chip->dev);
}
-static const struct i2c_device_id pm860x_id_table[] = {
- { "88PM860x", 0 },
- {}
-};
-MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
-
static int verify_addr(struct i2c_client *i2c)
{
unsigned short addr_8607[] = {0x30, 0x34};
@@ -1144,21 +1140,52 @@ static struct regmap_config pm860x_regmap_config = {
.val_bits = 8,
};
+static int __devinit pm860x_dt_init(struct device_node *np,
+ struct device *dev,
+ struct pm860x_platform_data *pdata)
+{
+ int ret;
+
+ if (of_get_property(np, "marvell,88pm860x-irq-read-clr", NULL))
+ pdata->irq_mode = 1;
+ ret = of_property_read_u32(np, "marvell,88pm860x-slave-addr",
+ &pdata->companion_addr);
+ if (ret) {
+ dev_err(dev, "Not found \"marvell,88pm860x-slave-addr\" "
+ "property\n");
+ pdata->companion_addr = 0;
+ }
+ return 0;
+}
+
static int __devinit pm860x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct pm860x_platform_data *pdata = client->dev.platform_data;
+ struct device_node *node = client->dev.of_node;
struct pm860x_chip *chip;
int ret;
- if (!pdata) {
+ if (node && !pdata) {
+ /* parse DT to get platform data */
+ pdata = devm_kzalloc(&client->dev,
+ sizeof(struct pm860x_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ return -ENOMEM;
+ ret = pm860x_dt_init(node, &client->dev, pdata);
+ if (ret)
+ goto err;
+ } else if (!pdata) {
pr_info("No platform data in %s!\n", __func__);
return -EINVAL;
}
chip = kzalloc(sizeof(struct pm860x_chip), GFP_KERNEL);
- if (chip == NULL)
- return -ENOMEM;
+ if (chip == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
chip->id = verify_addr(client);
chip->regmap = regmap_init_i2c(client, &pm860x_regmap_config);
@@ -1198,6 +1225,10 @@ static int __devinit pm860x_probe(struct i2c_client *client,
pm860x_device_init(chip, pdata);
return 0;
+err:
+ if (node)
+ devm_kfree(&client->dev, pdata);
+ return ret;
}
static int __devexit pm860x_remove(struct i2c_client *client)
@@ -1238,11 +1269,24 @@ static int pm860x_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
+static const struct i2c_device_id pm860x_id_table[] = {
+ { "88PM860x", 0 },
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, pm860x_id_table);
+
+static const struct of_device_id pm860x_dt_ids[] = {
+ { .compatible = "marvell,88pm860x", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, pm860x_dt_ids);
+
static struct i2c_driver pm860x_driver = {
.driver = {
.name = "88PM860x",
.owner = THIS_MODULE,
.pm = &pm860x_pm_ops,
+ .of_match_table = of_match_ptr(pm860x_dt_ids),
},
.probe = pm860x_probe,
.remove = __devexit_p(pm860x_remove),
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