target/linux/at91/patches-5.10/178-media-atmel-atmel-isc-create-callback-for-GAM-submod.patch

   1 From 96936a6753a13dea5a8f66de949e6594dd82ce22 Mon Sep 17 00:00:00 2001
   2 From: Eugen Hristev <eugen.hristev@microchip.com>
   3 Date: Tue, 13 Apr 2021 12:57:20 +0200
   4 Subject: [PATCH 178/247] media: atmel: atmel-isc: create callback for GAM
   5  submodule product specific
   6
   7 The GAM submodule is a part of the atmel-isc pipeline, and stands for
   8 Gamma Correction. It is used to apply the gamma curve to the incoming pixels.
   9 Create a product specific callback for initializing the GAM submodule
  10 of the pipeline.
  11 For sama5d2 product, there is no special configuration at this moment,
  12 thus this function is a noop.
  13
  14 [hverkuil: made isc_sama5d2_config_gam 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 | 6 ++++++
  23  3 files changed, 10 insertions(+)
  24
  25 --- a/drivers/media/platform/atmel/atmel-isc-base.c
  26 +++ b/drivers/media/platform/atmel/atmel-isc-base.c
  27 @@ -663,6 +663,7 @@ static void isc_set_pipeline(struct isc_
  28         isc->config_csc(isc);
  29         isc->config_cbc(isc);
  30         isc->config_cc(isc);
  31 +       isc->config_gam(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 @@ -228,6 +228,8 @@ struct isc_reg_offsets {
  38   *                     specific CBC module
  39   * @config_cc:         pointer to a function that initializes product
  40   *                     specific CC module
  41 + * @config_gam:                pointer to a function that initializes product
  42 + *                     specific GAMMA module
  43   * @config_ctrls:      pointer to a functoin that initializes product
  44   *                     specific v4l2 controls.
  45   *
  46 @@ -305,6 +307,7 @@ struct isc_device {
  47                 void (*config_csc)(struct isc_device *isc);
  48                 void (*config_cbc)(struct isc_device *isc);
  49                 void (*config_cc)(struct isc_device *isc);
  50 +               void (*config_gam)(struct isc_device *isc);
  51
  52                 void (*config_ctrls)(struct isc_device *isc,
  53                                      const struct v4l2_ctrl_ops *ops);
  54 --- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  55 +++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  56 @@ -112,6 +112,11 @@ static void isc_sama5d2_config_dpc(struc
  57         /* This module is not present on sama5d2 pipeline */
  58  }
  59
  60 +static void isc_sama5d2_config_gam(struct isc_device *isc)
  61 +{
  62 +       /* No specific gamma configuration */
  63 +}
  64 +
  65  /* Gamma table with gamma 1/2.2 */
  66  static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
  67         /* 0 --> gamma 1/1.8 */
  68 @@ -282,6 +287,7 @@ static int atmel_isc_probe(struct platfo
  69         isc->config_csc = isc_sama5d2_config_csc;
  70         isc->config_cbc = isc_sama5d2_config_cbc;
  71         isc->config_cc = isc_sama5d2_config_cc;
  72 +       isc->config_gam = isc_sama5d2_config_gam;
  73         isc->config_ctrls = isc_sama5d2_config_ctrls;
  74
  75         isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;