target/linux/at91/patches-5.10/175-media-atmel-atmel-isc-add-CC-initialization-function.patch

   1 From 0db91d2a803221c313c9f2cd1d71050d7c5a7b5b Mon Sep 17 00:00:00 2001
   2 From: Eugen Hristev <eugen.hristev@microchip.com>
   3 Date: Tue, 13 Apr 2021 12:57:17 +0200
   4 Subject: [PATCH 175/247] media: atmel: atmel-isc: add CC initialization
   5  function
   6
   7 The CC submodule is a part of the atmel-isc pipeline, and stands for
   8 Color Correction. It is used to apply gains and offsets to the
   9 chroma (U, V) components of the YUV elements.
  10 Implement the CC submodule initialization, as a product
  11 specific function, which currently configures the neutral point in color
  12 correction.
  13
  14 [hverkuil: made isc_sama5d2_config_cc static]
  15
  16 Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
  17 Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
  18 Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
  19 ---
  20  drivers/media/platform/atmel/atmel-isc-base.c    |  1 +
  21  drivers/media/platform/atmel/atmel-isc.h         |  3 +++
  22  drivers/media/platform/atmel/atmel-sama5d2-isc.c | 14 ++++++++++++++
  23  3 files changed, 18 insertions(+)
  24
  25 --- a/drivers/media/platform/atmel/atmel-isc-base.c
  26 +++ b/drivers/media/platform/atmel/atmel-isc-base.c
  27 @@ -661,6 +661,7 @@ static void isc_set_pipeline(struct isc_
  28
  29         isc->config_csc(isc);
  30         isc->config_cbc(isc);
  31 +       isc->config_cc(isc);
  32  }
  33
  34  static int isc_update_profile(struct isc_device *isc)
  35 --- a/drivers/media/platform/atmel/atmel-isc.h
  36 +++ b/drivers/media/platform/atmel/atmel-isc.h
  37 @@ -224,6 +224,8 @@ struct isc_reg_offsets {
  38   *                     specific CSC module
  39   * @config_cbc:                pointer to a function that initializes product
  40   *                     specific CBC module
  41 + * @config_cc:         pointer to a function that initializes product
  42 + *                     specific CC module
  43   *
  44   * @offsets:           struct holding the product specific register offsets
  45   */
  46 @@ -297,6 +299,7 @@ struct isc_device {
  47         struct {
  48                 void (*config_csc)(struct isc_device *isc);
  49                 void (*config_cbc)(struct isc_device *isc);
  50 +               void (*config_cc)(struct isc_device *isc);
  51         };
  52
  53         struct isc_reg_offsets          offsets;
  54 --- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  55 +++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  56 @@ -83,6 +83,19 @@ static void isc_sama5d2_config_cbc(struc
  57                      isc->ctrls.contrast);
  58  }
  59
  60 +static void isc_sama5d2_config_cc(struct isc_device *isc)
  61 +{
  62 +       struct regmap *regmap = isc->regmap;
  63 +
  64 +       /* Configure each register at the neutral fixed point 1.0 or 0.0 */
  65 +       regmap_write(regmap, ISC_CC_RR_RG, (1 << 8));
  66 +       regmap_write(regmap, ISC_CC_RB_OR, 0);
  67 +       regmap_write(regmap, ISC_CC_GR_GG, (1 << 8) << 16);
  68 +       regmap_write(regmap, ISC_CC_GB_OG, 0);
  69 +       regmap_write(regmap, ISC_CC_BR_BG, 0);
  70 +       regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
  71 +}
  72 +
  73  /* Gamma table with gamma 1/2.2 */
  74  static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
  75         /* 0 --> gamma 1/1.8 */
  76 @@ -251,6 +264,7 @@ static int atmel_isc_probe(struct platfo
  77
  78         isc->config_csc = isc_sama5d2_config_csc;
  79         isc->config_cbc = isc_sama5d2_config_cbc;
  80 +       isc->config_cc = isc_sama5d2_config_cc;
  81
  82         isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
  83         isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;