target/linux/bcm27xx/patches-4.19/950-0729-media-bcm2835-unicam-Add-support-for-luma-greyscale-.patch

   1 From 253dd469e6403b6c2afd25d4f8338a0c1588583f Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.org>
   3 Date: Thu, 3 Oct 2019 13:45:51 +0100
   4 Subject: [PATCH] media: bcm2835-unicam: Add support for luma/greyscale
   5  formats
   6
   7 Add support for V4L2_PIX_FMT_GREY, V4L2_PIX_FMT_Y10P,
   8 V4L2_PIX_FMT_Y10, and V4L2_PIX_FMT_Y12 image formats from the
   9 appropriate mediabus formats advertised by sensors.
  10
  11 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
  12 ---
  13  .../media/platform/bcm2835/bcm2835-unicam.c   | 21 ++++++++++++++++++-
  14  1 file changed, 20 insertions(+), 1 deletion(-)
  15
  16 --- a/drivers/media/platform/bcm2835/bcm2835-unicam.c
  17 +++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
  18 @@ -307,12 +307,31 @@ static const struct unicam_fmt formats[]
  19                 .code           = MEDIA_BUS_FMT_SRGGB14_1X14,
  20                 .depth          = 14,
  21                 .csi_dt         = 0x2d,
  22 -       },
  23 +       }, {
  24         /*
  25          * 16 bit Bayer formats could be supported, but there is no CSI2
  26          * data_type defined for raw 16, and no sensors that produce it at
  27          * present.
  28          */
  29 +
  30 +       /* Greyscale formats */
  31 +               .fourcc         = V4L2_PIX_FMT_GREY,
  32 +               .code           = MEDIA_BUS_FMT_Y8_1X8,
  33 +               .depth          = 8,
  34 +               .csi_dt         = 0x2a,
  35 +       }, {
  36 +               .fourcc         = V4L2_PIX_FMT_Y10P,
  37 +               .repacked_fourcc = V4L2_PIX_FMT_Y10,
  38 +               .code           = MEDIA_BUS_FMT_Y10_1X10,
  39 +               .depth          = 10,
  40 +               .csi_dt         = 0x2b,
  41 +       }, {
  42 +               /* NB There is no packed V4L2 fourcc for this format. */
  43 +               .repacked_fourcc = V4L2_PIX_FMT_Y12,
  44 +               .code           = MEDIA_BUS_FMT_Y12_1X12,
  45 +               .depth          = 12,
  46 +               .csi_dt         = 0x2c,
  47 +       },
  48  };
  49
  50  struct unicam_dmaqueue {