1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Broadcom BM2835 V4L2 driver 4 * 5 * Copyright © 2013 Raspberry Pi (Trading) Ltd. 6 * 7 * Authors: Vincent Sanders @ Collabora 8 * Dave Stevenson @ Broadcom 9 * (now dave.stevenson@raspberrypi.org) 10 * Simon Mellor @ Broadcom 11 * Luke Diamand @ Broadcom 12 * 13 * core driver device 14 */ 15 16 #define V4L2_CTRL_COUNT 29 /* number of v4l controls */ 17 18 enum { 19 COMP_CAMERA = 0, 20 COMP_PREVIEW, 21 COMP_IMAGE_ENCODE, 22 COMP_VIDEO_ENCODE, 23 COMP_COUNT 24 }; 25 26 enum { 27 CAM_PORT_PREVIEW = 0, 28 CAM_PORT_VIDEO, 29 CAM_PORT_CAPTURE, 30 CAM_PORT_COUNT 31 }; 32 33 #define PREVIEW_LAYER 2 34 35 extern int bcm2835_v4l2_debug; 36 37 struct bm2835_mmal_dev { 38 /* v4l2 devices */ 39 struct v4l2_device v4l2_dev; 40 struct video_device vdev; 41 struct mutex mutex; 42 43 /* controls */ 44 struct v4l2_ctrl_handler ctrl_handler; 45 struct v4l2_ctrl *ctrls[V4L2_CTRL_COUNT]; 46 enum v4l2_scene_mode scene_mode; 47 struct mmal_colourfx colourfx; 48 int hflip; 49 int vflip; 50 int red_gain; 51 int blue_gain; 52 enum mmal_parameter_exposuremode exposure_mode_user; 53 enum v4l2_exposure_auto_type exposure_mode_v4l2_user; 54 /* active exposure mode may differ if selected via a scene mode */ 55 enum mmal_parameter_exposuremode exposure_mode_active; 56 enum mmal_parameter_exposuremeteringmode metering_mode; 57 unsigned int manual_shutter_speed; 58 bool exp_auto_priority; 59 bool manual_iso_enabled; 60 u32 iso; 61 62 /* allocated mmal instance and components */ 63 struct vchiq_mmal_instance *instance; 64 struct vchiq_mmal_component *component[COMP_COUNT]; 65 int camera_use_count; 66 67 struct v4l2_window overlay; 68 69 struct { 70 unsigned int width; /* width */ 71 unsigned int height; /* height */ 72 unsigned int stride; /* stride */ 73 unsigned int buffersize; /* buffer size with padding */ 74 struct mmal_fmt *fmt; 75 struct v4l2_fract timeperframe; 76 77 /* H264 encode bitrate */ 78 int encode_bitrate; 79 /* H264 bitrate mode. CBR/VBR */ 80 int encode_bitrate_mode; 81 /* H264 profile */ 82 enum v4l2_mpeg_video_h264_profile enc_profile; 83 /* H264 level */ 84 enum v4l2_mpeg_video_h264_level enc_level; 85 /* JPEG Q-factor */ 86 int q_factor; 87 88 struct vb2_queue vb_vidq; 89 90 /* VC start timestamp for streaming */ 91 s64 vc_start_timestamp; 92 /* Kernel start timestamp for streaming */ 93 ktime_t kernel_start_ts; 94 /* Sequence number of last buffer */ 95 u32 sequence; 96 97 struct vchiq_mmal_port *port; /* port being used for capture */ 98 /* camera port being used for capture */ 99 struct vchiq_mmal_port *camera_port; 100 /* component being used for encode */ 101 struct vchiq_mmal_component *encode_component; 102 /* number of frames remaining which driver should capture */ 103 unsigned int frame_count; 104 /* last frame completion */ 105 struct completion frame_cmplt; 106 107 } capture; 108 109 unsigned int camera_num; 110 unsigned int max_width; 111 unsigned int max_height; 112 unsigned int rgb_bgr_swapped; 113 }; 114 115 int bm2835_mmal_init_controls( 116 struct bm2835_mmal_dev *dev, 117 struct v4l2_ctrl_handler *hdl); 118 119 int bm2835_mmal_set_all_camera_controls(struct bm2835_mmal_dev *dev); 120 int set_framerate_params(struct bm2835_mmal_dev *dev); 121 122 /* Debug helpers */ 123 124 #define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc) \ 125 { \ 126 v4l2_dbg(level, debug, dev, \ 127 "%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \ 128 desc, \ 129 (pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field, \ 130 (pix_fmt)->pixelformat, (pix_fmt)->bytesperline, \ 131 (pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \ 132 } 133 134 #define v4l2_dump_win_format(level, debug, dev, win_fmt, desc) \ 135 { \ 136 v4l2_dbg(level, debug, dev, \ 137 "%s: w %u h %u l %u t %u field %u chromakey %06X clip %p " \ 138 "clipcount %u bitmap %p\n", \ 139 desc, \ 140 (win_fmt)->w.width, (win_fmt)->w.height, \ 141 (win_fmt)->w.left, (win_fmt)->w.top, \ 142 (win_fmt)->field, \ 143 (win_fmt)->chromakey, \ 144 (win_fmt)->clips, (win_fmt)->clipcount, \ 145 (win_fmt)->bitmap); \ 146 } 147