lwn.git/drivers/media/platform/vivid/vivid-tpg.c, branch docs-next

[media] tpg: Export the tpg code from vivid as a module

2016-04-20T19:14:39+00:00

The test pattern generator will be used by other drivers as the virtual media controller (vimc) Signed-off-by: Helen Mae Koike Fornazier Acked-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid: support new multiplanar YUV formats

2016-03-03T10:48:31+00:00

Add support for the new YUV422M, YVU422M, YUV444M and YVU444M formats. This allows applications to check their support for these formats. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid: add 10 and 12 bit Bayer formats

2015-10-01T10:49:45+00:00

Add support for 10 and 12 bit Bayer formats to the test pattern generator and the vivid driver. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid-tpg: improve Y16 color setup

2015-06-06T10:34:52+00:00

Currently the colors for the Y16 and Y16_BE pixelformats are in the range 0x0000-0xff00. So pure white (0xffff) is never created. Improve this by making white really white. For other colors the lsb remains 0 so vivid can be used to detect endian problems. Signed-off-by: Hans Verkuil Reviewed-by: Ricardo Ribalda Signed-off-by: Mauro Carvalho Chehab

[media] vivid: move PRINTSTR to separate functions

2015-06-06T01:22:05+00:00

Commit 84cb7be43cec12868e94163c99fdc34c0297c3b8 broke vivid-tpg (uninitialized variable p). This patch takes a different approach: four different functions are created, one for each PRINTSTR version. In order to avoid the 'the frame size of 1308 bytes is larger than 1024 bytes' warning I had to mark those functions with 'noinline'. For whatever reason gcc seems to inline this aggressively and it is doing weird things with the stack. I tried to read the assembly code, but I couldn't see what exactly it was doing on the stack. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid-tpg: precalculate colorspace/xfer_func combinations

2015-06-05T14:50:36+00:00

Precalculate all the colorspace/transfer function combinations in order to easily generate the correct colors. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid: add xfer_func support

2015-06-05T14:49:53+00:00

Add support for the transfer function: create a new control for it, and support it for both capture and output sides. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] vivid: don't use more than 1024 bytes of stack

2015-06-05T10:41:54+00:00

Remove the following compilation warnings: drivers/media/platform/vivid/vivid-tpg.c: In function 'tpg_gen_text': drivers/media/platform/vivid/vivid-tpg.c:1562:1: warning: the frame size of 1308 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ This seems to be due to some bad optimization done by gcc. Moving the for() loop to happen inside the macro solves the issue. While here, fix CodingStyle at the switch(). Signed-off-by: Mauro Carvalho Chehab Acked-by: Hans Verkuil

[media] vivid: use new V4L2_MAP_*_DEFAULT defines

2015-05-30T14:39:52+00:00

Use these defines instead of hardcoding this in any driver that needs it. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] media/vivid: Add support for Y16_BE format

2015-05-30T14:34:29+00:00

Support for V4L2_PIX_FMT_Y16_BE, a 16 bit big endian greyscale format. Signed-off-by: Ricardo Ribalda Delgado Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab