Re: [PATCH 2/3] HID: core: Add bus define for SoundWire bus

[Charles Keepax <ckeepax@opensource.cirrus.com>]

On Wed, Jun 11, 2025 at 06:26:50PM +0800, shumingf@realtek.com wrote:

Adding Pierre.

> From: Charles Keepax <ckeepax@opensource.cirrus.com>
> 
> SDCA (SoundWire Device Class for Audio) uses HID to convey
> input events from peripheral devices. Add a bus define for the
> SoundWire bus to prepare support for this.
> 
> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
> ---
>  drivers/hid/hid-core.c     | 3 +++
>  include/uapi/linux/input.h | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
> index b348d0464314..b419e31005b8 100644
> --- a/drivers/hid/hid-core.c
> +++ b/drivers/hid/hid-core.c
> @@ -2294,6 +2294,9 @@ int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
>  	case BUS_I2C:
>  		bus = "I2C";
>  		break;
> +	case BUS_SDW:
> +		bus = "SOUNDWIRE";
> +		break;
>  	case BUS_VIRTUAL:
>  		bus = "VIRTUAL";
>  		break;
> diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
> index 2557eb7b0561..127119c287cf 100644
> --- a/include/uapi/linux/input.h
> +++ b/include/uapi/linux/input.h
> @@ -275,6 +275,7 @@ struct input_mask {
>  #define BUS_CEC			0x1E
>  #define BUS_INTEL_ISHTP		0x1F
>  #define BUS_AMD_SFH		0x20
> +#define BUS_SDW			0x21
>  
>  /*
>   * MT_TOOL types
> -- 
> 2.34.1
>