target/linux/bcm27xx/patches-5.4/950-0680-media-i2c-ov5647-Set-V4L2_SUBDEV_FL_HAS_EVENTS-flag.patch

   1 From 0e864ac98ffc97d0bb5fc343ca62d860fbe8da09 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Wed, 29 Apr 2020 17:25:56 +0100
   4 Subject: [PATCH] media: i2c: ov5647: Set V4L2_SUBDEV_FL_HAS_EVENTS
   5  flag
   6
   7 The ov5647 subdev can generate control events, therefore set
   8 the V4L2_SUBDEV_FL_HAS_EVENTS flag.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  drivers/media/i2c/ov5647.c | 29 +++++++++++++++++++++++++++--
  13  1 file changed, 27 insertions(+), 2 deletions(-)
  14
  15 --- a/drivers/media/i2c/ov5647.c
  16 +++ b/drivers/media/i2c/ov5647.c
  17 @@ -90,6 +90,8 @@ struct ov5647_mode {
  18         struct v4l2_rect crop;
  19
  20         u64 pixel_rate;
  21 +       /* HTS as defined in the register set (0x380C/0x380D) */
  22 +       int hts;
  23
  24         struct regval_list              *reg_list;
  25         unsigned int                    num_regs;
  26 @@ -106,6 +108,7 @@ struct ov5647 {
  27         unsigned int                    flags;
  28         struct v4l2_ctrl_handler        ctrls;
  29         struct v4l2_ctrl                *pixel_rate;
  30 +       struct v4l2_ctrl                *hblank;
  31         bool                            write_mode_regs;
  32  };
  33
  34 @@ -605,6 +608,7 @@ static struct ov5647_mode supported_mode
  35                         .height = 960,
  36                 },
  37                 .pixel_rate = 77291670,
  38 +               .hts = 1896,
  39                 ov5647_640x480_8bit,
  40                 ARRAY_SIZE(ov5647_640x480_8bit)
  41         },
  42 @@ -629,6 +633,7 @@ static struct ov5647_mode supported_mode
  43                         .height = 1944
  44                 },
  45                 .pixel_rate = 87500000,
  46 +               .hts = 2844,
  47                 ov5647_2592x1944_10bit,
  48                 ARRAY_SIZE(ov5647_2592x1944_10bit)
  49         },
  50 @@ -651,6 +656,7 @@ static struct ov5647_mode supported_mode
  51                         .height = 1080,
  52                 },
  53                 .pixel_rate = 81666700,
  54 +               .hts = 2416,
  55                 ov5647_1080p30_10bit,
  56                 ARRAY_SIZE(ov5647_1080p30_10bit)
  57         },
  58 @@ -672,6 +678,7 @@ static struct ov5647_mode supported_mode
  59                         .height = 1944,
  60                 },
  61                 .pixel_rate = 81666700,
  62 +               .hts = 1896,
  63                 ov5647_2x2binned_10bit,
  64                 ARRAY_SIZE(ov5647_2x2binned_10bit)
  65         },
  66 @@ -694,6 +701,7 @@ static struct ov5647_mode supported_mode
  67                         .height = 1920,
  68                 },
  69                 .pixel_rate = 55000000,
  70 +               .hts = 1852,
  71                 ov5647_640x480_10bit,
  72                 ARRAY_SIZE(ov5647_640x480_10bit)
  73         },
  74 @@ -1168,6 +1176,8 @@ static int ov5647_set_fmt(struct v4l2_su
  75                  * If we have changed modes, write the I2C register list on
  76                  * a stream_on().
  77                  */
  78 +               int hblank;
  79 +
  80                 if (state->mode != mode)
  81                         state->write_mode_regs = true;
  82                 state->mode = mode;
  83 @@ -1176,6 +1186,9 @@ static int ov5647_set_fmt(struct v4l2_su
  84                                          mode->pixel_rate,
  85                                          mode->pixel_rate, 1,
  86                                          mode->pixel_rate);
  87 +               hblank = mode->hts - mode->format.width;
  88 +               __v4l2_ctrl_modify_range(state->hblank, hblank, hblank, 1,
  89 +                                        hblank);
  90         }
  91
  92         mutex_unlock(&state->lock);
  93 @@ -1395,6 +1408,9 @@ static int ov5647_s_ctrl(struct v4l2_ctr
  94         case V4L2_CID_PIXEL_RATE:
  95                 /* Read-only, but we adjust it based on mode. */
  96                 break;
  97 +       case V4L2_CID_HBLANK:
  98 +               /* Read-only, but we adjust it based on mode. */
  99 +               break;
 100         default:
 101                 dev_info(&client->dev,
 102                          "ctrl(id:0x%x,val:0x%x) is not handled\n",
 103 @@ -1419,6 +1435,7 @@ static int ov5647_probe(struct i2c_clien
 104         struct device_node *np = client->dev.of_node;
 105         u32 xclk_freq;
 106         struct v4l2_ctrl *ctrl;
 107 +       int hblank;
 108
 109         sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
 110         if (!sensor)
 111 @@ -1452,7 +1469,7 @@ static int ov5647_probe(struct i2c_clien
 112         mutex_init(&sensor->lock);
 113
 114         /* Initialise controls. */
 115 -       v4l2_ctrl_handler_init(&sensor->ctrls, 6);
 116 +       v4l2_ctrl_handler_init(&sensor->ctrls, 7);
 117         v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
 118                           V4L2_CID_AUTOGAIN,
 119                           0,  /* min */
 120 @@ -1495,6 +1512,13 @@ static int ov5647_probe(struct i2c_clien
 121                                                sensor->mode->pixel_rate, 1,
 122                                                sensor->mode->pixel_rate);
 123
 124 +       /* By default, HBLANK is read only, but it does change per mode */
 125 +       hblank = sensor->mode->hts - sensor->mode->format.width;
 126 +       sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,
 127 +                                          V4L2_CID_HBLANK, hblank, hblank, 1,
 128 +                                          hblank);
 129 +       sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
 130 +
 131         if (sensor->ctrls.error) {
 132                 ret = sensor->ctrls.error;
 133                 dev_err(&client->dev, "%s control init failed (%d)\n",
 134 @@ -1509,7 +1533,8 @@ static int ov5647_probe(struct i2c_clien
 135         sd = &sensor->sd;
 136         v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops);
 137         sensor->sd.internal_ops = &ov5647_subdev_internal_ops;
 138 -       sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 139 +       sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
 140 +                           V4L2_SUBDEV_FL_HAS_EVENTS;
 141
 142         sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
 143         sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;