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net:rfkill: add a gpio setup function into GPIO rfkill

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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@linaro.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sangwook Lee 2011-09-29 12:57:17 +01:00 committed by John W. Linville
parent 893d73f4a1
commit e209c5a7ed
2 changed files with 15 additions and 0 deletions
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4
include/linux/rfkill-gpio.h
View File

@ -30,6 +30,8 @@
* @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_close: clean up platform specific gpio configuration
* @gpio_runtime_setup: set up platform specific gpio configuration
*/
struct rfkill_gpio_platform_data {
@ -38,6 +40,8 @@ struct rfkill_gpio_platform_data {
int shutdown_gpio;
const char *power_clk_name;
enum rfkill_type type;
void (*gpio_runtime_close)(struct platform_device *);
int (*gpio_runtime_setup)(struct platform_device *);
};
#endif /* __RFKILL_GPIO_H */

11
net/rfkill/rfkill-gpio.c
View File

@ -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);
@ -182,7 +190,10 @@ fail_alloc:
static int rfkill_gpio_remove(struct platform_device *pdev)
{
struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev);
struct rfkill_gpio_platform_data *pdata = pdev->dev.platform_data;
if (pdata->gpio_runtime_close)
pdata->gpio_runtime_close(pdev);
rfkill_unregister(rfkill->rfkill_dev);
rfkill_destroy(rfkill->rfkill_dev);
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))