drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_bridge.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright 2021-2022 Bootlin
   4  * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
   5  */
   6
   7 #ifndef _SUN6I_CSI_BRIDGE_H_
   8 #define _SUN6I_CSI_BRIDGE_H_
   9
  10 #include <media/v4l2-device.h>
  11 #include <media/v4l2-fwnode.h>
  12
  13 #define SUN6I_CSI_BRIDGE_NAME   "sun6i-csi-bridge"
  14
  15 enum sun6i_csi_bridge_pad {
  16         SUN6I_CSI_BRIDGE_PAD_SINK       = 0,
  17         SUN6I_CSI_BRIDGE_PAD_SOURCE     = 1,
  18         SUN6I_CSI_BRIDGE_PAD_COUNT      = 2,
  19 };
  20
  21 struct sun6i_csi_device;
  22
  23 struct sun6i_csi_bridge_format {
  24         u32     mbus_code;
  25         u8      input_format;
  26         u8      input_yuv_seq;
  27         u8      input_yuv_seq_invert;
  28 };
  29
  30 struct sun6i_csi_bridge_source {
  31         struct v4l2_subdev              *subdev;
  32         struct v4l2_fwnode_endpoint     endpoint;
  33         bool                            expected;
  34 };
  35
  36 struct sun6i_csi_bridge_async_subdev {
  37         struct v4l2_async_connection    async_subdev;
  38         struct sun6i_csi_bridge_source  *source;
  39 };
  40
  41 struct sun6i_csi_bridge {
  42         struct v4l2_subdev              subdev;
  43         struct v4l2_async_notifier      notifier;
  44         struct media_pad                pads[2];
  45         struct v4l2_mbus_framefmt       mbus_format;
  46         struct mutex                    lock; /* Mbus format lock. */
  47
  48         struct sun6i_csi_bridge_source  source_parallel;
  49         struct sun6i_csi_bridge_source  source_mipi_csi2;
  50 };
  51
  52 /* Helpers */
  53
  54 void sun6i_csi_bridge_dimensions(struct sun6i_csi_device *csi_dev,
  55                                  unsigned int *width, unsigned int *height);
  56 void sun6i_csi_bridge_format(struct sun6i_csi_device *csi_dev,
  57                              u32 *mbus_code, u32 *field);
  58
  59 /* Format */
  60
  61 const struct sun6i_csi_bridge_format *
  62 sun6i_csi_bridge_format_find(u32 mbus_code);
  63
  64 /* Bridge */
  65
  66 int sun6i_csi_bridge_setup(struct sun6i_csi_device *csi_dev);
  67 void sun6i_csi_bridge_cleanup(struct sun6i_csi_device *csi_dev);
  68
  69 #endif