On Mon, 2011-09-26 at 15:22 +0100, Sangwook Lee wrote:
> 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>
> ---
> 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..d6cec90 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 -EINVAL;
Wouldn't you want to return ret?
johannes
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