Add DT support to the 88pm800 driver, along with compatible
field for it's sub-devices (rtc, onkey and regulator)
Signed-off-by: Chao Xie <chao.xie@xxxxxxxxxxx>
Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@xxxxxxxxxx>
---
drivers/mfd/88pm800.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c
index 841717a..059f01a 100644
--- a/drivers/mfd/88pm800.c
+++ b/drivers/mfd/88pm800.c
@@ -27,6 +27,7 @@
#include <linux/mfd/core.h>
#include <linux/mfd/88pm80x.h>
#include <linux/slab.h>
+#include <linux/of_device.h>
/* Interrupt Registers */
#define PM800_INT_STATUS1 (0x05)
@@ -121,6 +122,11 @@ static const struct i2c_device_id pm80x_id_table[] = {
};
MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
+static const struct of_device_id pm80x_of_match_table[] = {
+ { .compatible = "marvell,88pm800", },
+ {},
+};
+
static struct resource rtc_resources[] = {
{
.name = "88pm80x-rtc",
@@ -133,6 +139,7 @@ static struct resource rtc_resources[] = {
static struct mfd_cell rtc_devs[] = {
{
.name = "88pm80x-rtc",
+ .of_compatible = "marvell,88pm80x-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = &rtc_resources[0],
.id = -1,
@@ -151,6 +158,7 @@ static struct resource onkey_resources[] = {
static const struct mfd_cell onkey_devs[] = {
{
.name = "88pm80x-onkey",
+ .of_compatible = "marvell,88pm80x-onkey",
.num_resources = 1,
.resources = &onkey_resources[0],
.id = -1,
@@ -160,6 +168,7 @@ static const struct mfd_cell onkey_devs[] = {
static const struct mfd_cell regulator_devs[] = {
{
.name = "88pm80x-regulator",
+ .of_compatible = "marvell,88pm80x-regulator",
.id = -1,
},
};
@@ -544,8 +553,23 @@ static int pm800_probe(struct i2c_client *client,
int ret = 0;
struct pm80x_chip *chip;
struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
+ struct device_node *np = client->dev.of_node;
struct pm80x_subchip *subchip;
+ if (!pdata && !np) {
+ dev_err(&client->dev,
+ "pm80x requires platform data or of_node\n");
+ return -EINVAL;
+ }
+
+ if (!pdata) {
+ pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata) {
+ dev_err(&client->dev, "failed to allocaate memory\n");
+ return -ENOMEM;
+ }
+ }
+
ret = pm80x_init(client);
if (ret) {
dev_err(&client->dev, "pm800_init fail\n");
@@ -611,6 +635,7 @@ static struct i2c_driver pm800_driver = {
.name = "88PM800",
.owner = THIS_MODULE,
.pm = &pm80x_pm_ops,
+ .of_match_table = pm80x_of_match_table,
},
.probe = pm800_probe,
.remove = pm800_remove,
--
1.9.1
--
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