drivers/media/pci/tw5864/tw5864.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  TW5864 driver  - common header file
   4  *
   5  *  Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com>
   6  */
   7
   8 #include <linux/pci.h>
   9 #include <linux/videodev2.h>
  10 #include <linux/notifier.h>
  11 #include <linux/delay.h>
  12 #include <linux/mutex.h>
  13 #include <linux/io.h>
  14 #include <linux/interrupt.h>
  15
  16 #include <media/v4l2-common.h>
  17 #include <media/v4l2-ioctl.h>
  18 #include <media/v4l2-ctrls.h>
  19 #include <media/v4l2-device.h>
  20 #include <media/videobuf2-dma-sg.h>
  21
  22 #include "tw5864-reg.h"
  23
  24 #define PCI_DEVICE_ID_TECHWELL_5864 0x5864
  25
  26 #define TW5864_NORMS V4L2_STD_ALL
  27
  28 /* ----------------------------------------------------------- */
  29 /* card configuration   */
  30
  31 #define TW5864_INPUTS 4
  32
  33 /* The TW5864 uses 192 (16x12) detection cells in full screen for motion
  34  * detection. Each detection cell is composed of 44 pixels and 20 lines for
  35  * NTSC and 24 lines for PAL.
  36  */
  37 #define MD_CELLS_HOR 16
  38 #define MD_CELLS_VERT 12
  39 #define MD_CELLS (MD_CELLS_HOR * MD_CELLS_VERT)
  40
  41 #define H264_VLC_BUF_SIZE 0x80000
  42 #define H264_MV_BUF_SIZE 0x2000 /* device writes 5396 bytes */
  43 #define QP_VALUE 28
  44 #define MAX_GOP_SIZE 255
  45 #define GOP_SIZE MAX_GOP_SIZE
  46
  47 enum resolution {
  48         D1 = 1,
  49         HD1 = 2, /* half d1 - 360x(240|288) */
  50         CIF = 3,
  51         QCIF = 4,
  52 };
  53
  54 /* ----------------------------------------------------------- */
  55 /* device / file handle status                                 */
  56
  57 struct tw5864_dev; /* forward delclaration */
  58
  59 /* buffer for one video/vbi/ts frame */
  60 struct tw5864_buf {
  61         struct vb2_v4l2_buffer vb;
  62         struct list_head list;
  63
  64         unsigned int size;
  65 };
  66
  67 struct tw5864_dma_buf {
  68         void *addr;
  69         dma_addr_t dma_addr;
  70 };
  71
  72 enum tw5864_vid_std {
  73         STD_NTSC = 0, /* NTSC (M) */
  74         STD_PAL = 1, /* PAL (B, D, G, H, I) */
  75         STD_SECAM = 2, /* SECAM */
  76         STD_NTSC443 = 3, /* NTSC4.43 */
  77         STD_PAL_M = 4, /* PAL (M) */
  78         STD_PAL_CN = 5, /* PAL (CN) */
  79         STD_PAL_60 = 6, /* PAL 60 */
  80         STD_INVALID = 7,
  81         STD_AUTO = 7,
  82 };
  83
  84 struct tw5864_input {
  85         int nr; /* input number */
  86         struct tw5864_dev *root;
  87         struct mutex lock; /* used for vidq and vdev */
  88         spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
  89         struct video_device vdev;
  90         struct v4l2_ctrl_handler hdl;
  91         struct vb2_queue vidq;
  92         struct list_head active;
  93         enum resolution resolution;
  94         unsigned int width, height;
  95         unsigned int frame_seqno;
  96         unsigned int frame_gop_seqno;
  97         unsigned int h264_idr_pic_id;
  98         int enabled;
  99         enum tw5864_vid_std std;
 100         v4l2_std_id v4l2_std;
 101         int tail_nb_bits;
 102         u8 tail;
 103         u8 *buf_cur_ptr;
 104         int buf_cur_space_left;
 105
 106         u32 reg_interlacing;
 107         u32 reg_vlc;
 108         u32 reg_dsp_codec;
 109         u32 reg_dsp;
 110         u32 reg_emu;
 111         u32 reg_dsp_qp;
 112         u32 reg_dsp_ref_mvp_lambda;
 113         u32 reg_dsp_i4x4_weight;
 114         u32 buf_id;
 115
 116         struct tw5864_buf *vb;
 117
 118         struct v4l2_ctrl *md_threshold_grid_ctrl;
 119         u16 md_threshold_grid_values[12 * 16];
 120         int qp;
 121         int gop;
 122
 123         /*
 124          * In (1/MAX_FPS) units.
 125          * For max FPS (default), set to 1.
 126          * For 1 FPS, set to e.g. 32.
 127          */
 128         int frame_interval;
 129         unsigned long new_frame_deadline;
 130 };
 131
 132 struct tw5864_h264_frame {
 133         struct tw5864_dma_buf vlc;
 134         struct tw5864_dma_buf mv;
 135         int vlc_len;
 136         u32 checksum;
 137         struct tw5864_input *input;
 138         u64 timestamp;
 139         unsigned int seqno;
 140         unsigned int gop_seqno;
 141 };
 142
 143 /* global device status */
 144 struct tw5864_dev {
 145         spinlock_t slock; /* used for sync between ISR, tasklet & V4L2 API */
 146         struct v4l2_device v4l2_dev;
 147         struct tw5864_input inputs[TW5864_INPUTS];
 148 #define H264_BUF_CNT 4
 149         struct tw5864_h264_frame h264_buf[H264_BUF_CNT];
 150         int h264_buf_r_index;
 151         int h264_buf_w_index;
 152
 153         struct tasklet_struct tasklet;
 154
 155         int encoder_busy;
 156         /* Input number to check next for ready raw picture (in RR fashion) */
 157         int next_input;
 158
 159         /* pci i/o */
 160         char name[64];
 161         struct pci_dev *pci;
 162         void __iomem *mmio;
 163         u32 irqmask;
 164 };
 165
 166 #define tw_readl(reg) readl(dev->mmio + reg)
 167 #define tw_mask_readl(reg, mask) \
 168         (tw_readl(reg) & (mask))
 169 #define tw_mask_shift_readl(reg, mask, shift) \
 170         (tw_mask_readl((reg), ((mask) << (shift))) >> (shift))
 171
 172 #define tw_writel(reg, value) writel((value), dev->mmio + reg)
 173 #define tw_mask_writel(reg, mask, value) \
 174         tw_writel(reg, (tw_readl(reg) & ~(mask)) | ((value) & (mask)))
 175 #define tw_mask_shift_writel(reg, mask, shift, value) \
 176         tw_mask_writel((reg), ((mask) << (shift)), ((value) << (shift)))
 177
 178 #define tw_setl(reg, bit) tw_writel((reg), tw_readl(reg) | (bit))
 179 #define tw_clearl(reg, bit) tw_writel((reg), tw_readl(reg) & ~(bit))
 180
 181 u8 tw5864_indir_readb(struct tw5864_dev *dev, u16 addr);
 182 #define tw_indir_readb(addr) tw5864_indir_readb(dev, addr)
 183 void tw5864_indir_writeb(struct tw5864_dev *dev, u16 addr, u8 data);
 184 #define tw_indir_writeb(addr, data) tw5864_indir_writeb(dev, addr, data)
 185
 186 void tw5864_irqmask_apply(struct tw5864_dev *dev);
 187 int tw5864_video_init(struct tw5864_dev *dev, int *video_nr);
 188 void tw5864_video_fini(struct tw5864_dev *dev);
 189 void tw5864_prepare_frame_headers(struct tw5864_input *input);
 190 void tw5864_h264_put_stream_header(u8 **buf, size_t *space_left, int qp,
 191                                    int width, int height);
 192 void tw5864_h264_put_slice_header(u8 **buf, size_t *space_left,
 193                                   unsigned int idr_pic_id,
 194                                   unsigned int frame_gop_seqno,
 195                                   int *tail_nb_bits, u8 *tail);
 196 void tw5864_request_encoded_frame(struct tw5864_input *input);