target/linux/at91/patches-5.15/176-media-atmel-atmel-isc-create-product-specific-v4l2-c.patch

   1 From 0a75c502eac4f2ef71b6c3e0b3a01db1b3c37ba9 Mon Sep 17 00:00:00 2001
   2 From: Eugen Hristev <eugen.hristev@microchip.com>
   3 Date: Tue, 13 Apr 2021 12:57:18 +0200
   4 Subject: [PATCH 176/247] media: atmel: atmel-isc: create product specific v4l2
   5  controls config
   6
   7 Create product specific callback for initializing v4l2 controls.
   8 Call this from v4l2 controls init function.
   9
  10 [hverkuil: made isc_sama5d2_config_ctrls static]
  11
  12 Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
  13 Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
  14 Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
  15 ---
  16  drivers/media/platform/atmel/atmel-isc-base.c    |  5 +++--
  17  drivers/media/platform/atmel/atmel-isc.h         |  5 +++++
  18  drivers/media/platform/atmel/atmel-sama5d2-isc.c | 12 ++++++++++++
  19  3 files changed, 20 insertions(+), 2 deletions(-)
  20
  21 --- a/drivers/media/platform/atmel/atmel-isc-base.c
  22 +++ b/drivers/media/platform/atmel/atmel-isc-base.c
  23 @@ -2051,11 +2051,12 @@ static int isc_ctrl_init(struct isc_devi
  24         if (ret < 0)
  25                 return ret;
  26
  27 +       /* Initialize product specific controls. For example, contrast */
  28 +       isc->config_ctrls(isc, ops);
  29 +
  30         ctrls->brightness = 0;
  31 -       ctrls->contrast = 256;
  32
  33         v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -1024, 1023, 1, 0);
  34 -       v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256);
  35         v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAMMA, 0, isc->gamma_max, 1,
  36                           isc->gamma_max);
  37         isc->awb_ctrl = v4l2_ctrl_new_std(hdl, &isc_awb_ops,
  38 --- a/drivers/media/platform/atmel/atmel-isc.h
  39 +++ b/drivers/media/platform/atmel/atmel-isc.h
  40 @@ -226,6 +226,8 @@ struct isc_reg_offsets {
  41   *                     specific CBC module
  42   * @config_cc:         pointer to a function that initializes product
  43   *                     specific CC module
  44 + * @config_ctrls:      pointer to a functoin that initializes product
  45 + *                     specific v4l2 controls.
  46   *
  47   * @offsets:           struct holding the product specific register offsets
  48   */
  49 @@ -300,6 +302,9 @@ struct isc_device {
  50                 void (*config_csc)(struct isc_device *isc);
  51                 void (*config_cbc)(struct isc_device *isc);
  52                 void (*config_cc)(struct isc_device *isc);
  53 +
  54 +               void (*config_ctrls)(struct isc_device *isc,
  55 +                                    const struct v4l2_ctrl_ops *ops);
  56         };
  57
  58         struct isc_reg_offsets          offsets;
  59 --- a/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  60 +++ b/drivers/media/platform/atmel/atmel-sama5d2-isc.c
  61 @@ -96,6 +96,17 @@ static void isc_sama5d2_config_cc(struct
  62         regmap_write(regmap, ISC_CC_BB_OB, (1 << 8));
  63  }
  64
  65 +static void isc_sama5d2_config_ctrls(struct isc_device *isc,
  66 +                                    const struct v4l2_ctrl_ops *ops)
  67 +{
  68 +       struct isc_ctrls *ctrls = &isc->ctrls;
  69 +       struct v4l2_ctrl_handler *hdl = &ctrls->handler;
  70 +
  71 +       ctrls->contrast = 256;
  72 +
  73 +       v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -2048, 2047, 1, 256);
  74 +}
  75 +
  76  /* Gamma table with gamma 1/2.2 */
  77  static const u32 isc_sama5d2_gamma_table[][GAMMA_ENTRIES] = {
  78         /* 0 --> gamma 1/1.8 */
  79 @@ -265,6 +276,7 @@ static int atmel_isc_probe(struct platfo
  80         isc->config_csc = isc_sama5d2_config_csc;
  81         isc->config_cbc = isc_sama5d2_config_cbc;
  82         isc->config_cc = isc_sama5d2_config_cc;
  83 +       isc->config_ctrls = isc_sama5d2_config_ctrls;
  84
  85         isc->offsets.csc = ISC_SAMA5D2_CSC_OFFSET;
  86         isc->offsets.cbc = ISC_SAMA5D2_CBC_OFFSET;