git.openwrt.org Git - openwrt/staging/neocturne.git/blob

   1 From 1cec09c2c2f4c65350d29a0c597da6c7df5ef3bc Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Thu, 25 Jun 2020 17:03:11 +0100
   4 Subject: [PATCH] media : i2c: imx290: Add support for the mono sensor
   5  variant.
   6
   7 The IMX290 module is available as either mono or colour (Bayer).
   8
   9 Update the driver so that it can advertise the correct mono
  10 formats instead of the colour ones.
  11
  12 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  13 ---
  14  drivers/media/i2c/imx290.c | 58 +++++++++++++++++++++++++++-----------
  15  1 file changed, 41 insertions(+), 17 deletions(-)
  16
  17 --- a/drivers/media/i2c/imx290.c
  18 +++ b/drivers/media/i2c/imx290.c
  19 @@ -1,10 +1,12 @@
  20  // SPDX-License-Identifier: GPL-2.0
  21  /*
  22 - * Sony IMX290/327 CMOS Image Sensor Driver
  23 + * Sony IMX290 & IMX327 CMOS Image Sensor Driver
  24   *
  25   * The IMX290 and IMX327 are very similar 1920x1080 1/2.8 CMOS image sensors.
  26 - * IMX327 can support up to 60fps, whilst IMX290 support up to 120fps (only
  27 - * 10bit and when connected over 4 CSI-2 lanes).
  28 + * IMX327 can support up to 60fps, whilst IMX290 can support up to 120fps, but
  29 + * only 10bit and when connected over 4 CSI-2 lanes.
  30 + * The modules don't appear to have a mechanism to identify whether the mono or
  31 + * colour variant is connected, therefore it is done via compatible string.
  32   *
  33   * Copyright (C) 2019 FRAMOS GmbH.
  34   *
  35 @@ -17,6 +19,7 @@
  36  #include <linux/gpio/consumer.h>
  37  #include <linux/i2c.h>
  38  #include <linux/module.h>
  39 +#include <linux/of_device.h>
  40  #include <linux/pm_runtime.h>
  41  #include <linux/regmap.h>
  42  #include <linux/regulator/consumer.h>
  43 @@ -95,6 +98,8 @@ struct imx290 {
  44         u8 bpp;
  45         u16 hmax_min;
  46
  47 +       const struct imx290_pixfmt *formats;
  48 +
  49         struct v4l2_subdev sd;
  50         struct media_pad pad;
  51         struct v4l2_mbus_framefmt current_format;
  52 @@ -120,11 +125,18 @@ struct imx290_pixfmt {
  53         u8 bpp;
  54  };
  55
  56 -static const struct imx290_pixfmt imx290_formats[] = {
  57 +#define IMX290_NUM_FORMATS 2
  58 +
  59 +static const struct imx290_pixfmt imx290_colour_formats[IMX290_NUM_FORMATS] = {
  60         { MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
  61         { MEDIA_BUS_FMT_SRGGB12_1X12, 12 },
  62  };
  63
  64 +static const struct imx290_pixfmt imx290_mono_formats[IMX290_NUM_FORMATS] = {
  65 +       { MEDIA_BUS_FMT_Y10_1X10, 10 },
  66 +       { MEDIA_BUS_FMT_Y12_1X12, 12 },
  67 +};
  68 +
  69  static const struct regmap_config imx290_regmap_config = {
  70         .reg_bits = 16,
  71         .val_bits = 8,
  72 @@ -671,10 +683,12 @@ static int imx290_enum_mbus_code(struct
  73                                  struct v4l2_subdev_state *sd_state,
  74                                  struct v4l2_subdev_mbus_code_enum *code)
  75  {
  76 -       if (code->index >= ARRAY_SIZE(imx290_formats))
  77 +       const struct imx290 *imx290 = to_imx290(sd);
  78 +
  79 +       if (code->index >= IMX290_NUM_FORMATS)
  80                 return -EINVAL;
  81
  82 -       code->code = imx290_formats[code->index].code;
  83 +       code->code = imx290->formats[code->index].code;
  84
  85         return 0;
  86  }
  87 @@ -686,8 +700,8 @@ static int imx290_enum_frame_size(struct
  88         const struct imx290 *imx290 = to_imx290(sd);
  89         const struct imx290_mode *imx290_modes = imx290_modes_ptr(imx290);
  90
  91 -       if ((fse->code != imx290_formats[0].code) &&
  92 -           (fse->code != imx290_formats[1].code))
  93 +       if (fse->code != imx290->formats[0].code &&
  94 +           fse->code != imx290->formats[1].code)
  95                 return -EINVAL;
  96
  97         if (fse->index >= imx290_modes_num(imx290))
  98 @@ -765,14 +779,14 @@ static int imx290_set_fmt(struct v4l2_su
  99         fmt->format.width = mode->width;
 100         fmt->format.height = mode->height;
 101
 102 -       for (i = 0; i < ARRAY_SIZE(imx290_formats); i++)
 103 -               if (imx290_formats[i].code == fmt->format.code)
 104 +       for (i = 0; i < IMX290_NUM_FORMATS; i++)
 105 +               if (imx290->formats[i].code == fmt->format.code)
 106                         break;
 107
 108 -       if (i >= ARRAY_SIZE(imx290_formats))
 109 +       if (i >= IMX290_NUM_FORMATS)
 110                 i = 0;
 111
 112 -       fmt->format.code = imx290_formats[i].code;
 113 +       fmt->format.code = imx290->formats[i].code;
 114         fmt->format.field = V4L2_FIELD_NONE;
 115
 116         if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
 117 @@ -780,7 +794,7 @@ static int imx290_set_fmt(struct v4l2_su
 118         } else {
 119                 format = &imx290->current_format;
 120                 imx290->current_mode = mode;
 121 -               imx290->bpp = imx290_formats[i].bpp;
 122 +               imx290->bpp = imx290->formats[i].bpp;
 123
 124                 if (imx290->link_freq)
 125                         __v4l2_ctrl_s_ctrl(imx290->link_freq,
 126 @@ -835,6 +849,7 @@ static int imx290_write_current_format(s
 127
 128         switch (imx290->current_format.code) {
 129         case MEDIA_BUS_FMT_SRGGB10_1X10:
 130 +       case MEDIA_BUS_FMT_Y10_1X10:
 131                 ret = imx290_set_register_array(imx290, imx290_10bit_settings,
 132                                                 ARRAY_SIZE(
 133                                                         imx290_10bit_settings));
 134 @@ -844,6 +859,7 @@ static int imx290_write_current_format(s
 135                 }
 136                 break;
 137         case MEDIA_BUS_FMT_SRGGB12_1X12:
 138 +       case MEDIA_BUS_FMT_Y12_1X12:
 139                 ret = imx290_set_register_array(imx290, imx290_12bit_settings,
 140                                                 ARRAY_SIZE(
 141                                                         imx290_12bit_settings));
 142 @@ -1087,6 +1103,12 @@ static s64 imx290_check_link_freqs(const
 143         return 0;
 144  }
 145
 146 +static const struct of_device_id imx290_of_match[] = {
 147 +       { .compatible = "sony,imx290", .data = imx290_colour_formats },
 148 +       { .compatible = "sony,imx290-mono", .data = imx290_mono_formats },
 149 +       { /* sentinel */ }
 150 +};
 151 +
 152  static int imx290_probe(struct i2c_client *client)
 153  {
 154         struct device *dev = &client->dev;
 155 @@ -1095,6 +1117,7 @@ static int imx290_probe(struct i2c_clien
 156         struct v4l2_fwnode_endpoint ep = {
 157                 .bus_type = V4L2_MBUS_CSI2_DPHY
 158         };
 159 +       const struct of_device_id *match;
 160         const struct imx290_mode *mode;
 161         struct imx290 *imx290;
 162         s64 fq;
 163 @@ -1111,6 +1134,11 @@ static int imx290_probe(struct i2c_clien
 164                 return -ENODEV;
 165         }
 166
 167 +       match = of_match_device(imx290_of_match, dev);
 168 +       if (!match)
 169 +               return -ENODEV;
 170 +       imx290->formats = (const struct imx290_pixfmt *)match->data;
 171 +
 172         endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
 173         if (!endpoint) {
 174                 dev_err(dev, "Endpoint node not found\n");
 175 @@ -1329,10 +1357,6 @@ static int imx290_remove(struct i2c_clie
 176         return 0;
 177  }
 178
 179 -static const struct of_device_id imx290_of_match[] = {
 180 -       { .compatible = "sony,imx290" },
 181 -       { /* sentinel */ }
 182 -};
 183  MODULE_DEVICE_TABLE(of, imx290_of_match);
 184
 185  static struct i2c_driver imx290_i2c_driver = {