gpio: sx150x: add dts support for sx150x driver

Current sx150x gpio expander driver doesn't support
DTS. Now we added dts support for this driver.

Signed-off-by: Wei Chen <Wei.Chen@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/gpio/gpio-sx150x.c b/drivers/gpio/gpio-sx150x.c
index 20573ac714fc..88012e2b5b15 100644
--- a/drivers/gpio/gpio-sx150x.c
+++ b/drivers/gpio/gpio-sx150x.c
@@ -23,6 +23,11 @@
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/i2c/sx150x.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
 
 #define NO_UPDATE_PENDING       -1
 
@@ -147,6 +152,13 @@ static const struct i2c_device_id sx150x_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, sx150x_id);
 
+static const struct of_device_id sx150x_dt_id[] = {
+        { .compatible = "semtech,sx1508q" },
+        { .compatible = "semtech,sx1509q" },
+        { .compatible = "semtech,sx1506q" },
+        {},
+};
+
 static s32 sx150x_i2c_write(struct i2c_client *client, u8 reg, u8 val)
 {
         s32 err = i2c_smbus_write_byte_data(client, reg, val);
@@ -472,6 +484,8 @@ static void sx150x_init_chip(struct sx150x_chip *chip,
         chip->gpio_chip.base             = pdata->gpio_base;
         chip->gpio_chip.can_sleep        = true;
         chip->gpio_chip.ngpio            = chip->dev_cfg->ngpios;
+        chip->gpio_chip.of_node          = client->dev.of_node;
+        chip->gpio_chip.of_gpio_n_cells  = 2;
         if (pdata->oscio_is_gpo)
                 ++chip->gpio_chip.ngpio;
 
@@ -666,7 +680,8 @@ static int sx150x_remove(struct i2c_client *client)
 static struct i2c_driver sx150x_driver = {
         .driver = {
                 .name = "sx150x",
-                .owner = THIS_MODULE
+                .owner = THIS_MODULE,
+                .of_match_table = of_match_ptr(sx150x_dt_id),
         },
         .probe    = sx150x_probe,
         .remove   = sx150x_remove,