1 /* 2 * TW5864 driver - common header file 3 * 4 * Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 17 #include <linux/pci.h> 18 #include <linux/videodev2.h> 19 #include <linux/notifier.h> 20 #include <linux/delay.h> 21 #include <linux/mutex.h> 22 #include <linux/io.h> 23 #include <linux/interrupt.h> 24 25 #include <media/v4l2-common.h> 26 #include <media/v4l2-ioctl.h> 27 #include <media/v4l2-ctrls.h> 28 #include <media/v4l2-device.h> 29 #include <media/videobuf2-dma-sg.h> 30 31 #include "tw5864-reg.h" 32 33 #define PCI_DEVICE_ID_TECHWELL_5864 0x5864 34 35 #define TW5864_NORMS V4L2_STD_ALL 36 37 /* ----------------------------------------------------------- */ 38 /* card configuration */ 39 40 #define TW5864_INPUTS 4 41 42 /* The TW5864 uses 192 (16x12) detection cells in full screen for motion 43 * detection. Each detection cell is composed of 44 pixels and 20 lines for 44 * NTSC and 24 lines for PAL. 45 */ 46 #define MD_CELLS_HOR 16 47 #define MD_CELLS_VERT 12 48 #define MD_CELLS (MD_CELLS_HOR * MD_CELLS_VERT) 49 50 #define H264_VLC_BUF_SIZE 0x80000 51 #define H264_MV_BUF_SIZE 0x2000 /* device writes 5396 bytes */ 52 #define QP_VALUE 28 53 #define MAX_GOP_SIZE 255 54 #define GOP_SIZE MAX_GOP_SIZE 55 56 enum resolution { 57 D1 = 1, 58 HD1 = 2, /* half d1 - 360x(240|288) */ 59 CIF = 3, 60 QCIF = 4, 61 }; 62 63 /* ----------------------------------------------------------- */ 64 /* device / file handle status */ 65 66 struct tw5864_dev; /* forward delclaration */ 67 68 /* buffer for one video/vbi/ts frame */ 69 struct tw5864_buf { 70 struct vb2_v4l2_buffer vb; 71 struct list_head list; 72 73 unsigned int size; 74 }; 75 76 struct tw5864_dma_buf { 77 void *addr; 78 dma_addr_t dma_addr; 79 }; 80 81 enum tw5864_vid_std { 82 STD_NTSC = 0, /* NTSC (M) */ 83 STD_PAL = 1, /* PAL (B, D, G, H, I) */ 84 STD_SECAM = 2, /* SECAM */ 85 STD_NTSC443 = 3, /* NTSC4.43 */ 86 STD_PAL_M = 4, /* PAL (M) */ 87 STD_PAL_CN = 5, /* PAL (CN) */ 88 STD_PAL_60 = 6, /* PAL 60 */ 89 STD_INVALID = 7, 90 STD_AUTO = 7, 91 }; 92 93 struct tw5864_input { 94 int nr; /* input number */ 95 struct tw5864_dev *root; 96 struct mutex lock; /* used for vidq and vdev */ 97 spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ 98 struct video_device vdev; 99 struct v4l2_ctrl_handler hdl; 100 struct vb2_queue vidq; 101 struct list_head active; 102 enum resolution resolution; 103 unsigned int width, height; 104 unsigned int frame_seqno; 105 unsigned int frame_gop_seqno; 106 unsigned int h264_idr_pic_id; 107 int enabled; 108 enum tw5864_vid_std std; 109 v4l2_std_id v4l2_std; 110 int tail_nb_bits; 111 u8 tail; 112 u8 *buf_cur_ptr; 113 int buf_cur_space_left; 114 115 u32 reg_interlacing; 116 u32 reg_vlc; 117 u32 reg_dsp_codec; 118 u32 reg_dsp; 119 u32 reg_emu; 120 u32 reg_dsp_qp; 121 u32 reg_dsp_ref_mvp_lambda; 122 u32 reg_dsp_i4x4_weight; 123 u32 buf_id; 124 125 struct tw5864_buf *vb; 126 127 struct v4l2_ctrl *md_threshold_grid_ctrl; 128 u16 md_threshold_grid_values[12 * 16]; 129 int qp; 130 int gop; 131 132 /* 133 * In (1/MAX_FPS) units. 134 * For max FPS (default), set to 1. 135 * For 1 FPS, set to e.g. 32. 136 */ 137 int frame_interval; 138 unsigned long new_frame_deadline; 139 }; 140 141 struct tw5864_h264_frame { 142 struct tw5864_dma_buf vlc; 143 struct tw5864_dma_buf mv; 144 int vlc_len; 145 u32 checksum; 146 struct tw5864_input *input; 147 u64 timestamp; 148 unsigned int seqno; 149 unsigned int gop_seqno; 150 }; 151 152 /* global device status */ 153 struct tw5864_dev { 154 spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */ 155 struct v4l2_device v4l2_dev; 156 struct tw5864_input inputs[TW5864_INPUTS]; 157 #define H264_BUF_CNT 4 158 struct tw5864_h264_frame h264_buf[H264_BUF_CNT]; 159 int h264_buf_r_index; 160 int h264_buf_w_index; 161 162 struct tasklet_struct tasklet; 163 164 int encoder_busy; 165 /* Input number to check next for ready raw picture (in RR fashion) */ 166 int next_input; 167 168 /* pci i/o */ 169 char name[64]; 170 struct pci_dev *pci; 171 void __iomem *mmio; 172 u32 irqmask; 173 }; 174 175 #define tw_readl(reg) readl(dev->mmio + reg) 176 #define tw_mask_readl(reg, mask) \ 177 (tw_readl(reg) & (mask)) 178 #define tw_mask_shift_readl(reg, mask, shift) \ 179 (tw_mask_readl((reg), ((mask) << (shift))) >> (shift)) 180 181 #define tw_writel(reg, value) writel((value), dev->mmio + reg) 182 #define tw_mask_writel(reg, mask, value) \ 183 tw_writel(reg, (tw_readl(reg) & ~(mask)) | ((value) & (mask))) 184 #define tw_mask_shift_writel(reg, mask, shift, value) \ 185 tw_mask_writel((reg), ((mask) << (shift)), ((value) << (shift))) 186 187 #define tw_setl(reg, bit) tw_writel((reg), tw_readl(reg) | (bit)) 188 #define tw_clearl(reg, bit) tw_writel((reg), tw_readl(reg) & ~(bit)) 189 190 u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr); 191 #define tw_indir_readb(addr) tw5864_indir_readb(dev, addr) 192 void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data); 193 #define tw_indir_writeb(addr, data) tw5864_indir_writeb(dev, addr, data) 194 195 void tw5864_irqmask_apply(struct tw5864_dev *dev); 196 int tw5864_video_init(struct tw5864_dev *dev, int *video_nr); 197 void tw5864_video_fini(struct tw5864_dev *dev); 198 void tw5864_prepare_frame_headers(struct tw5864_input *input); 199 void tw5864_h264_put_stream_header(u8 **buf, size_t *space_left, int qp, 200 int width, int height); 201 void tw5864_h264_put_slice_header(u8 **buf, size_t *space_left, 202 unsigned int idr_pic_id, 203 unsigned int frame_gop_seqno, 204 int *tail_nb_bits, u8 *tail); 205 void tw5864_request_encoded_frame(struct tw5864_input *input); 206