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authorNick Dyer <nick@shmanahar.org>2016-07-18 18:10:30 -0300
committerMauro Carvalho Chehab <mchehab@s-opensource.com>2016-08-23 16:28:04 -0300
commitb2fe22d0cf64708c50c26f11b3da8b79809c699b (patch)
treede7ba78bc3260c2af09a9ec6a2065497e8ea3088 /drivers/media/media-entity.c
parentaaf578e12e06160792ae5dd71dee3b074e0f9475 (diff)
download96b-common-b2fe22d0cf64708c50c26f11b3da8b79809c699b.tar.gz
[media] v4l2-core: Add support for touch devices
Some touch controllers send out touch data in a similar way to a greyscale frame grabber. Add new device type VFL_TYPE_TOUCH: - This uses a new device prefix v4l-touch for these devices, to stop generic capture software from treating them as webcams. Otherwise, touch is treated similarly to video capture. - Add V4L2_INPUT_TYPE_TOUCH - Add MEDIA_INTF_T_V4L_TOUCH - Add V4L2_CAP_TOUCH to indicate device is a touch device 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 <nick@shmanahar.org> Tested-by: Chris Healy <cphealy@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/media/media-entity.c')
-rw-r--r--drivers/media/media-entity.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c
index d8a2299f0c2a..9014362e904d 100644
--- a/drivers/media/media-entity.c
+++ b/drivers/media/media-entity.c
@@ -65,6 +65,8 @@ static inline const char *intf_type(struct media_interface *intf)
return "v4l-subdev";
case MEDIA_INTF_T_V4L_SWRADIO:
return "v4l-swradio";
+ case MEDIA_INTF_T_V4L_TOUCH:
+ return "v4l-touch";
case MEDIA_INTF_T_ALSA_PCM_CAPTURE:
return "alsa-pcm-capture";
case MEDIA_INTF_T_ALSA_PCM_PLAYBACK: