Re: [PATCH v5 1/9] [media] v4l2-core: Add support for touch devices
From: Nick Dyer <hidden>
Date: 2016-06-24 13:48:34
Also in:
linux-media, lkml
On 22/06/2016 23:08, Nick Dyer wrote:
Some touch controllers send out touch data in a similar way to a greyscale frame grabber. Use a new device prefix v4l-touch for these devices, to stop generic capture software from treating them as webcams. Add formats: - V4L2_TCH_FMT_DELTA_TD16 for signed 16-bit touch deltas - V4L2_TCH_FMT_DELTA_TD08 for signed 16-bit touch deltas - V4L2_TCH_FMT_TU16 for unsigned 16-bit touch data - V4L2_TCH_FMT_TU08 for unsigned 8-bit touch data This support will be used by: * Atmel maXTouch (atmel_mxt_ts) * Synaptics RMI4. * sur40 Signed-off-by: Nick Dyer <redacted> ---
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diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 8f95191..7e19782 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h@@ -143,6 +143,7 @@ enum v4l2_buf_type { V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE = 10, V4L2_BUF_TYPE_SDR_CAPTURE = 11, V4L2_BUF_TYPE_SDR_OUTPUT = 12, + V4L2_BUF_TYPE_TOUCH_CAPTURE = 13, /* Deprecated, do not use */ V4L2_BUF_TYPE_PRIVATE = 0x80, };@@ -440,6 +441,8 @@ struct v4l2_capability { #define V4L2_CAP_ASYNCIO 0x02000000 /* async I/O */ #define V4L2_CAP_STREAMING 0x04000000 /* streaming I/O ioctls */ +#define V4L2_CAP_TOUCH 0x00100000 /* Is a touch device */
Apologies, this should have been #define V4L2_CAP_TOUCH 0x10000000 You will find my changes to v4l2-compliance to support these changes here: https://github.com/ndyer/v4l-utils I've tested the atmel_mxt_ts version of this with v4l2-compliance on Pixel 2.