Input: auo-pixcir-ts - handle reset gpio directly
From: Heiko Stuebner <heiko@...> Date: Thu, 21 Feb 2013 16:16:27 +0100
Commit-Message
Devicetree based platforms don't handle device callbacks very well and until now no board has come along that needs more extended hwinit than pulling the rst gpio high. Therefore pull the reset handling directly into the driver and remove the callbacks from the driver. If extended device setup is needed at some later point, power-sequences would probably be the solution of choice. Signed-off-by: Heiko Stuebner <heiko@...>
Patch-Comment
drivers/input/touchscreen/auo-pixcir-ts.c | 26 ++++++++++++++++++++------ include/linux/input/auo-pixcir-ts.h | 4 +--- 2 files changed, 21 insertions(+), 9 deletions(-)
Statistics
- 21 lines added
- 9 lines removed
Changes
------------------ drivers/input/touchscreen/auo-pixcir-ts.c -------------------
index 813413e..6317a9c 100644
@@ -511,8 +511,21 @@ static int auo_pixcir_probe(struct i2c_client *client,
goto err_gpio_dir;
}
+ ret = gpio_request(pdata->gpio_rst, "auo_pixcir_ts_rst");
+ if (ret) {
+ dev_err(&client->dev, "request of gpio %d failed, %d\n",
+ pdata->gpio_rst, ret);
+ goto err_gpio_dir;
+ }
+
+ ret = gpio_direction_output(pdata->gpio_rst, 1);
+ if (ret) {
+ dev_err(&client->dev, "setting direction of gpio %d failed %d\n",
+ pdata->gpio_rst, ret);
+ goto err_gpio_rst;
+ }
+
+ msleep(200);
ts->client = client;
ts->touch_ind_mode = 0;
@@ -597,8 +610,9 @@ err_input_register:
err_fw_vers:
input_free_device(input_dev);
err_input_alloc:
+ gpio_set_value(pdata->gpio_rst, 0);
+err_gpio_rst:
+ gpio_free(pdata->gpio_rst);
err_gpio_dir:
gpio_free(pdata->gpio_int);
err_gpio_int:
@@ -616,8 +630,8 @@ static int auo_pixcir_remove(struct i2c_client *client)
input_unregister_device(ts->input);
+ gpio_set_value(pdata->gpio_rst, 0);
+ gpio_free(pdata->gpio_rst);
gpio_free(pdata->gpio_int);
--------------------- include/linux/input/auo-pixcir-ts.h ----------------------
index 75d4be7..5049f21 100644
@@ -43,12 +43,10 @@
*/
struct auo_pixcir_ts_platdata {
int gpio_int;
+ int gpio_rst;
int int_setting;
unsigned int x_max;
unsigned int y_max;
};