Add a gpio setup function which gives a chance to set up
platform specific configuration such as pin multiplexing,
input/output direction at the runtime or booting time.
Signed-off-by: Sangwook Lee <sangwook.lee@xxxxxxxxxx>
v2:
- fixed the return type after checking gpio_runtime_setup
---
include/linux/rfkill-gpio.h | 2 ++
net/rfkill/rfkill-gpio.c | 8 ++++++++
2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/include/linux/rfkill-gpio.h b/include/linux/rfkill-gpio.h
index a175d05..786e7bb 100644
--- a/include/linux/rfkill-gpio.h
+++ b/include/linux/rfkill-gpio.h
@@ -30,6 +30,7 @@
* @reset_gpio: GPIO which is used for reseting rfkill switch
* @shutdown_gpio: GPIO which is used for shutdown of rfkill switch
* @power_clk_name: [optional] name of clk to turn off while blocked
+ * @gpio_runtime_setup: set up platform specific gpio configuration
*/
struct rfkill_gpio_platform_data {
@@ -38,6 +39,7 @@ struct rfkill_gpio_platform_data {
int shutdown_gpio;
const char *power_clk_name;
enum rfkill_type type;
+ int (*gpio_runtime_setup)(struct platform_device *);
};
#endif /* __RFKILL_GPIO_H */
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c
index 256c5dd..96a910c 100644
--- a/net/rfkill/rfkill-gpio.c
+++ b/net/rfkill/rfkill-gpio.c
@@ -101,6 +101,14 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
if (!rfkill)
return -ENOMEM;
+ if (pdata->gpio_runtime_setup) {
+ ret = pdata->gpio_runtime_setup(pdev);
+ if (ret) {
+ pr_warn("%s: can't set up gpio\n", __func__);
+ return ret;
+ }
+ }
+
rfkill->pdata = pdata;
len = strlen(pdata->name);
--
1.7.4.1
--
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