On Wed, Dec 23, 2020 at 1:57 PM Jian-Hong Pan <jhp@xxxxxxxxxxxxx> wrote:
>
> Some Chicony's keyboards support airplane mode hotkey (Fn+F2) with
> "Wireless Radio Control" feature. For example, the wireless keyboard
> [04f2:1236] shipped with ASUS all-in-one desktop.
>
> After consulting Chicony for this hotkey, learned the device will send
> with 0x11 as the report ID and 0x1 as the value when the key is pressed
> down.
>
> This patch maps the event as KEY_RFKILL.
>
> Signed-off-by: Jian-Hong Pan <jhp@xxxxxxxxxxxxx>
Reviewed-by: Chris Chiu <chiu@xxxxxxxxxxxxx>
> ---
> v2: Remove the duplicated key pressed check.
>
> drivers/hid/hid-chicony.c | 55 +++++++++++++++++++++++++++++++++++++++
> drivers/hid/hid-ids.h | 1 +
> 2 files changed, 56 insertions(+)
>
> diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c
> index 3f0ed6a95223..ca556d39da2a 100644
> --- a/drivers/hid/hid-chicony.c
> +++ b/drivers/hid/hid-chicony.c
> @@ -21,6 +21,39 @@
>
> #include "hid-ids.h"
>
> +#define CH_WIRELESS_CTL_REPORT_ID 0x11
> +
> +static int ch_report_wireless(struct hid_report *report, u8 *data, int size)
> +{
> + struct hid_device *hdev = report->device;
> + struct input_dev *input;
> +
> + if (report->id != CH_WIRELESS_CTL_REPORT_ID || report->maxfield != 1)
> + return 0;
> +
> + input = report->field[0]->hidinput->input;
> + if (!input) {
> + hid_warn(hdev, "can't find wireless radio control's input");
> + return 0;
> + }
> +
> + input_report_key(input, KEY_RFKILL, 1);
> + input_sync(input);
> + input_report_key(input, KEY_RFKILL, 0);
> + input_sync(input);
> +
> + return 1;
> +}
> +
> +static int ch_raw_event(struct hid_device *hdev,
> + struct hid_report *report, u8 *data, int size)
> +{
> + if (report->application == HID_GD_WIRELESS_RADIO_CTLS)
> + return ch_report_wireless(report, data, size);
> +
> + return 0;
> +}
> +
> #define ch_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
> EV_KEY, (c))
> static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
> @@ -77,10 +110,30 @@ static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
> return rdesc;
> }
>
> +static int ch_probe(struct hid_device *hdev, const struct hid_device_id *id)
> +{
> + int ret;
> +
> + hdev->quirks |= HID_QUIRK_INPUT_PER_APP;
> + ret = hid_parse(hdev);
> + if (ret) {
> + hid_err(hdev, "Chicony hid parse failed: %d\n", ret);
> + return ret;
> + }
> +
> + ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
> + if (ret) {
> + hid_err(hdev, "Chicony hw start failed: %d\n", ret);
> + return ret;
> + }
> +
> + return 0;
> +}
>
> static const struct hid_device_id ch_devices[] = {
> { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
> { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
> + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS3) },
> { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
> { }
> };
> @@ -91,6 +144,8 @@ static struct hid_driver ch_driver = {
> .id_table = ch_devices,
> .report_fixup = ch_switch12_report_fixup,
> .input_mapping = ch_input_mapping,
> + .probe = ch_probe,
> + .raw_event = ch_raw_event,
> };
> module_hid_driver(ch_driver);
>
> diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
> index 4c5f23640f9c..06d90301a3dc 100644
> --- a/drivers/hid/hid-ids.h
> +++ b/drivers/hid/hid-ids.h
> @@ -270,6 +270,7 @@
> #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE 0x1053
> #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE2 0x0939
> #define USB_DEVICE_ID_CHICONY_WIRELESS2 0x1123
> +#define USB_DEVICE_ID_CHICONY_WIRELESS3 0x1236
> #define USB_DEVICE_ID_ASUS_AK1D 0x1125
> #define USB_DEVICE_ID_CHICONY_TOSHIBA_WT10A 0x1408
> #define USB_DEVICE_ID_CHICONY_ACER_SWITCH12 0x1421
> --
> 2.29.2
>
