On Wed, Nov 17, 2010 at 03:00:38PM +0800, Ike Panhc wrote:
> Hotkey enabled by this patch:
> Fn+F3: Video mode switch
> Fn+F5: software rfkill for wifi
>
> For some ideapad when push Fn+F3, hardware generates Super-P keys, those key
> will not be enabled by this patch.
>
> Signed-off-by: Ike Panhc <[email protected]>
> ---
> drivers/platform/x86/ideapad-laptop.c | 74
> +++++++++++++++++++++++++++++++++
> 1 files changed, 74 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/platform/x86/ideapad-laptop.c
> b/drivers/platform/x86/ideapad-laptop.c
> index d75c21f..d397034 100644
> --- a/drivers/platform/x86/ideapad-laptop.c
> +++ b/drivers/platform/x86/ideapad-laptop.c
> @@ -28,6 +28,8 @@
> #include <acpi/acpi_drivers.h>
> #include <linux/rfkill.h>
> #include <linux/platform_device.h>
> +#include <linux/input.h>
> +#include <linux/input/sparse-keymap.h>
>
> #define IDEAPAD_DEV_CAMERA 0
> #define IDEAPAD_DEV_WLAN 1
> @@ -39,6 +41,7 @@ struct ideapad_private {
> acpi_handle handle;
> struct rfkill *rfk[5];
> struct platform_device *platform_device;
> + struct input_dev *inputdev;
> } *ideapad_priv;
>
> static struct {
> @@ -325,6 +328,68 @@ static void ideapad_platform_exit(void)
> }
> /* the above is platform device */
>
> +/*
> + * input device
> + */
> +static const struct key_entry ideapad_keymap[] = {
> + { KE_KEY, 0x06, { KEY_SWITCHVIDEOMODE } },
> + { KE_KEY, 0x0D, { KEY_WLAN } },
> + { KE_END, 0 },
> +};
> +
> +static int ideapad_input_init(void)
__devinit?
> +{
> + struct input_dev *inputdev;
> + int error;
> +
> + inputdev = input_allocate_device();
> + if (!inputdev) {
> + pr_info("Unable to allocate input device\n");
> + return -ENOMEM;
> + }
> +
> + inputdev->name = "Ideapad extra buttons";
> + inputdev->phys = "ideapad/input0";
> + inputdev->id.bustype = BUS_HOST;
> + inputdev->dev.parent = &ideapad_priv->platform_device->dev;
> +
> + error = sparse_keymap_setup(inputdev, ideapad_keymap, NULL);
> + if (error) {
> + pr_err("Unable to setup input device keymap\n");
> + goto err_free_dev;
> + }
> +
> + error = input_register_device(inputdev);
> + if (error) {
> + pr_err("Unable to register input device\n");
> + goto err_free_keymap;
> + }
> +
> + ideapad_priv->inputdev = inputdev;
Why don't you pass ideapad_priv in as an argument instead of relying on
global. I know that there can only be one, but then why do you have a
structure?
> + return 0;
> +
> +err_free_keymap:
> + sparse_keymap_free(inputdev);
> +err_free_dev:
> + input_free_device(inputdev);
> + return error;
> +}
> +
> +static void ideapad_input_exit(void)
__devexit? The rest of the driver might user these markups as well.
> +{
> + if (ideapad_priv->inputdev) {
> + sparse_keymap_free(ideapad_priv->inputdev);
> + input_unregister_device(ideapad_priv->inputdev);
> + }
> + ideapad_priv->inputdev = NULL;
You fail driver initialization when ideapad_input_init() fails so there
is no point in checking whether ideapad_priv->inputdev is null or not.
Otherwise looks good from input POV.
Thanks.
--
Dmitry
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