1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Broadcom BCM2835 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 extern int bcm2835_v4l2_debug; 34 35 struct bcm2835_mmal_dev { 36 /* v4l2 devices */ 37 struct v4l2_device v4l2_dev; 38 struct video_device vdev; 39 struct mutex mutex; 40 41 /* controls */ 42 struct v4l2_ctrl_handler ctrl_handler; 43 struct v4l2_ctrl *ctrls[V4L2_CTRL_COUNT]; 44 enum v4l2_scene_mode scene_mode; 45 struct mmal_colourfx colourfx; 46 int hflip; 47 int vflip; 48 int red_gain; 49 int blue_gain; 50 enum mmal_parameter_exposuremode exposure_mode_user; 51 enum v4l2_exposure_auto_type exposure_mode_v4l2_user; 52 /* active exposure mode may differ if selected via a scene mode */ 53 enum mmal_parameter_exposuremode exposure_mode_active; 54 enum mmal_parameter_exposuremeteringmode metering_mode; 55 unsigned int manual_shutter_speed; 56 bool exp_auto_priority; 57 bool manual_iso_enabled; 58 u32 iso; 59 60 /* allocated mmal instance and components */ 61 struct vchiq_mmal_instance *instance; 62 struct vchiq_mmal_component *component[COMP_COUNT]; 63 int camera_use_count; 64 65 struct v4l2_window overlay; 66 67 struct { 68 unsigned int width; /* width */ 69 unsigned int height; /* height */ 70 unsigned int stride; /* stride */ 71 unsigned int buffersize; /* buffer size with padding */ 72 struct mmal_fmt *fmt; 73 struct v4l2_fract timeperframe; 74 75 /* H264 encode bitrate */ 76 int encode_bitrate; 77 /* H264 bitrate mode. CBR/VBR */ 78 int encode_bitrate_mode; 79 /* H264 profile */ 80 enum v4l2_mpeg_video_h264_profile enc_profile; 81 /* H264 level */ 82 enum v4l2_mpeg_video_h264_level enc_level; 83 /* JPEG Q-factor */ 84 int q_factor; 85 86 struct vb2_queue vb_vidq; 87 88 /* VC start timestamp for streaming */ 89 s64 vc_start_timestamp; 90 /* Kernel start timestamp for streaming */ 91 ktime_t kernel_start_ts; 92 /* Sequence number of last buffer */ 93 u32 sequence; 94 95 struct vchiq_mmal_port *port; /* port being used for capture */ 96 /* camera port being used for capture */ 97 struct vchiq_mmal_port *camera_port; 98 /* component being used for encode */ 99 struct vchiq_mmal_component *encode_component; 100 /* number of frames remaining which driver should capture */ 101 unsigned int frame_count; 102 /* last frame completion */ 103 struct completion frame_cmplt; 104 105 } capture; 106 107 unsigned int camera_num; 108 unsigned int max_width; 109 unsigned int max_height; 110 unsigned int rgb_bgr_swapped; 111 }; 112 113 int bcm2835_mmal_init_controls(struct bcm2835_mmal_dev *dev, struct v4l2_ctrl_handler *hdl); 114 115 int bcm2835_mmal_set_all_camera_controls(struct bcm2835_mmal_dev *dev); 116 int set_framerate_params(struct bcm2835_mmal_dev *dev); 117 118 /* Debug helpers */ 119 120 #define v4l2_dump_pix_format(level, debug, dev, pix_fmt, desc) \ 121 { \ 122 v4l2_dbg(level, debug, dev, \ 123 "%s: w %u h %u field %u pfmt 0x%x bpl %u sz_img %u colorspace 0x%x priv %u\n", \ 124 desc, \ 125 (pix_fmt)->width, (pix_fmt)->height, (pix_fmt)->field, \ 126 (pix_fmt)->pixelformat, (pix_fmt)->bytesperline, \ 127 (pix_fmt)->sizeimage, (pix_fmt)->colorspace, (pix_fmt)->priv); \ 128 } 129 130 #define v4l2_dump_win_format(level, debug, dev, win_fmt, desc) \ 131 { \ 132 v4l2_dbg(level, debug, dev, \ 133 "%s: w %u h %u l %u t %u field %u chromakey %06X clip %p " \ 134 "clipcount %u bitmap %p\n", \ 135 desc, \ 136 (win_fmt)->w.width, (win_fmt)->w.height, \ 137 (win_fmt)->w.left, (win_fmt)->w.top, \ 138 (win_fmt)->field, \ 139 (win_fmt)->chromakey, \ 140 (win_fmt)->clips, (win_fmt)->clipcount, \ 141 (win_fmt)->bitmap); \ 142 } 143