target/linux/bcm27xx/patches-6.1/950-1203-media-rp1-cfe-Add-cfe_find_16bit_code-and-cfe_find_c.patch

   1 From 2e0e1d7b493dffe7baa763d499e51ba42f0bad19 Mon Sep 17 00:00:00 2001
   2 From: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
   3 Date: Fri, 29 Sep 2023 17:14:11 +0300
   4 Subject: [PATCH] media: rp1: cfe: Add cfe_find_16bit_code() and
   5  cfe_find_compressed_code()
   6
   7 Add helper functions which, given an mbus code, return the 16-bit
   8 remapped mbus code or the compressed mbus code.
   9
  10 Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
  11 ---
  12  .../media/platform/raspberrypi/rp1_cfe/cfe.c  | 40 +++++++++++++++++++
  13  .../media/platform/raspberrypi/rp1_cfe/cfe.h  |  2 +
  14  2 files changed, 42 insertions(+)
  15
  16 --- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
  17 +++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.c
  18 @@ -473,6 +473,46 @@ const struct cfe_fmt *find_format_by_pix
  19         return NULL;
  20  }
  21
  22 +/*
  23 + * Given the mbus code, find the 16 bit remapped code. Returns 0 if no remap
  24 + * possible.
  25 + */
  26 +u32 cfe_find_16bit_code(u32 code)
  27 +{
  28 +       const struct cfe_fmt *cfe_fmt;
  29 +
  30 +       cfe_fmt = find_format_by_code(code);
  31 +
  32 +       if (!cfe_fmt || !cfe_fmt->remap[CFE_REMAP_16BIT])
  33 +               return 0;
  34 +
  35 +       cfe_fmt = find_format_by_pix(cfe_fmt->remap[CFE_REMAP_16BIT]);
  36 +       if (!cfe_fmt)
  37 +               return 0;
  38 +
  39 +       return cfe_fmt->code;
  40 +}
  41 +
  42 +/*
  43 + * Given the mbus code, find the 8 bit compressed code. Returns 0 if no remap
  44 + * possible.
  45 + */
  46 +u32 cfe_find_compressed_code(u32 code)
  47 +{
  48 +       const struct cfe_fmt *cfe_fmt;
  49 +
  50 +       cfe_fmt = find_format_by_code(code);
  51 +
  52 +       if (!cfe_fmt || !cfe_fmt->remap[CFE_REMAP_COMPRESSED])
  53 +               return 0;
  54 +
  55 +       cfe_fmt = find_format_by_pix(cfe_fmt->remap[CFE_REMAP_COMPRESSED]);
  56 +       if (!cfe_fmt)
  57 +               return 0;
  58 +
  59 +       return cfe_fmt->code;
  60 +}
  61 +
  62  static int cfe_calc_format_size_bpl(struct cfe_device *cfe,
  63                                     const struct cfe_fmt *fmt,
  64                                     struct v4l2_format *f)
  65 --- a/drivers/media/platform/raspberrypi/rp1_cfe/cfe.h
  66 +++ b/drivers/media/platform/raspberrypi/rp1_cfe/cfe.h
  67 @@ -37,5 +37,7 @@ extern const struct v4l2_mbus_framefmt c
  68
  69  const struct cfe_fmt *find_format_by_code(u32 code);
  70  const struct cfe_fmt *find_format_by_pix(u32 pixelformat);
  71 +u32 cfe_find_16bit_code(u32 code);
  72 +u32 cfe_find_compressed_code(u32 code);
  73
  74  #endif