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SubjectRe: [PATCH v4] HID: apple: Properly handle function keys on non-Apple keyboard
On Wed, Jun 01, 2022 at 12:17:37PM +0800, Hilton Chain wrote:
> This commit extends fa33382c7f74 ("HID: apple: Properly handle function
> keys on Keychron keyboards") by adding an array of known non-Apple
> keyboards' device names, and the function apple_is_non_apple_keyboard()
> to identify and create exception for them.
>
> Signed-off-by: Hilton Chain <hako@ultrarare.space>


v4 looks good to me, thanks for adding the suggested changes!

Reviewed-by: José Expósito <jose.exposito89@gmail.com>


> ---
>
> V3 -> V4: Removed unnecessary strlen()
>
> drivers/hid/hid-apple.c | 33 ++++++++++++++++++++++++++++-----
> 1 file changed, 28 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
> index 42a568902f49..4ec39c5e762a 100644
> --- a/drivers/hid/hid-apple.c
> +++ b/drivers/hid/hid-apple.c
> @@ -36,7 +36,7 @@
> #define APPLE_NUMLOCK_EMULATION BIT(8)
> #define APPLE_RDESC_BATTERY BIT(9)
> #define APPLE_BACKLIGHT_CTL BIT(10)
> -#define APPLE_IS_KEYCHRON BIT(11)
> +#define APPLE_IS_NON_APPLE BIT(11)
>
> #define APPLE_FLAG_FKEY 0x01
>
> @@ -65,6 +65,10 @@ MODULE_PARM_DESC(swap_fn_leftctrl, "Swap the Fn and left Control keys. "
> "(For people who want to keep PC keyboard muscle memory. "
> "[0] = as-is, Mac layout, 1 = swapped, PC layout)");
>
> +struct apple_non_apple_keyboard {
> + char *name;
> +};
> +
> struct apple_sc_backlight {
> struct led_classdev cdev;
> struct hid_device *hdev;
> @@ -313,6 +317,25 @@ static const struct apple_key_translation swapped_fn_leftctrl_keys[] = {
> { }
> };
>
> +static const struct apple_non_apple_keyboard non_apple_keyboards[] = {
> + { "SONiX USB DEVICE" },
> + { "Keychron" },
> +};
> +
> +static bool apple_is_non_apple_keyboard(struct hid_device *hdev)
> +{
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(non_apple_keyboards); i++) {
> + char *non_apple = non_apple_keyboards[i].name;
> +
> + if (strncmp(hdev->name, non_apple, strlen(non_apple)) == 0)
> + return true;
> + }
> +
> + return false;
> +}
> +
> static inline void apple_setup_key_translation(struct input_dev *input,
> const struct apple_key_translation *table)
> {
> @@ -363,7 +386,7 @@ static int hidinput_apple_event(struct hid_device *hid, struct input_dev *input,
> }
>
> if (fnmode == 3) {
> - real_fnmode = (asc->quirks & APPLE_IS_KEYCHRON) ? 2 : 1;
> + real_fnmode = (asc->quirks & APPLE_IS_NON_APPLE) ? 2 : 1;
> } else {
> real_fnmode = fnmode;
> }
> @@ -669,9 +692,9 @@ static int apple_input_configured(struct hid_device *hdev,
> asc->quirks &= ~APPLE_HAS_FN;
> }
>
> - if (strncmp(hdev->name, "Keychron", 8) == 0) {
> - hid_info(hdev, "Keychron keyboard detected; function keys will default to fnmode=2 behavior\n");
> - asc->quirks |= APPLE_IS_KEYCHRON;
> + if (apple_is_non_apple_keyboard(hdev)) {
> + hid_info(hdev, "Non-apple keyboard detected; function keys will default to fnmode=2 behavior\n");
> + asc->quirks |= APPLE_IS_NON_APPLE;
> }
>
> return 0;
>
> base-commit: 700170bf6b4d773e328fa54ebb70ba444007c702
> --
> 2.36.1
>

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