drivers/media/pci/tw68/tw68.h

   1 /*
   2  *  tw68 driver common header file
   3  *
   4  *  Much of this code is derived from the cx88 and sa7134 drivers, which
   5  *  were in turn derived from the bt87x driver.  The original work was by
   6  *  Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,
   7  *  Hans Verkuil, Andy Walls and many others.  Their work is gratefully
   8  *  acknowledged.  Full credit goes to them - any problems within this code
   9  *  are mine.
  10  *
  11  *  Copyright (C) 2009  William M. Brack
  12  *
  13  *  Refactored and updated to the latest v4l core frameworks:
  14  *
  15  *  Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  */
  27
  28 #include <linux/pci.h>
  29 #include <linux/videodev2.h>
  30 #include <linux/notifier.h>
  31 #include <linux/delay.h>
  32 #include <linux/mutex.h>
  33 #include <linux/io.h>
  34
  35 #include <media/v4l2-common.h>
  36 #include <media/v4l2-ioctl.h>
  37 #include <media/v4l2-ctrls.h>
  38 #include <media/v4l2-device.h>
  39 #include <media/videobuf2-dma-sg.h>
  40
  41 #include "tw68-reg.h"
  42
  43 #define UNSET   (-1U)
  44
  45 /* system vendor and device ID's */
  46 #define PCI_VENDOR_ID_TECHWELL  0x1797
  47 #define PCI_DEVICE_ID_6800      0x6800
  48 #define PCI_DEVICE_ID_6801      0x6801
  49 #define PCI_DEVICE_ID_AUDIO2    0x6802
  50 #define PCI_DEVICE_ID_TS3       0x6803
  51 #define PCI_DEVICE_ID_6804      0x6804
  52 #define PCI_DEVICE_ID_AUDIO5    0x6805
  53 #define PCI_DEVICE_ID_TS6       0x6806
  54
  55 /* tw6816 based cards */
  56 #define PCI_DEVICE_ID_6816_1   0x6810
  57 #define PCI_DEVICE_ID_6816_2   0x6811
  58 #define PCI_DEVICE_ID_6816_3   0x6812
  59 #define PCI_DEVICE_ID_6816_4   0x6813
  60
  61 #define TW68_NORMS ( \
  62         V4L2_STD_NTSC    | V4L2_STD_PAL       | V4L2_STD_SECAM    | \
  63         V4L2_STD_PAL_M   | V4L2_STD_PAL_Nc    | V4L2_STD_PAL_60)
  64
  65 #define TW68_VID_INTS   (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \
  66                          TW68_FFOF   | TW68_DMAPI)
  67 /* TW6800 chips have trouble with these, so we don't set them for that chip */
  68 #define TW68_VID_INTSX  (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)
  69
  70 #define TW68_I2C_INTS   (TW68_SBERR | TW68_SBDONE | TW68_SBERR2  | \
  71                          TW68_SBDONE2)
  72
  73 enum tw68_decoder_type {
  74         TW6800,
  75         TW6801,
  76         TW6804,
  77         TWXXXX,
  78 };
  79
  80 /* ----------------------------------------------------------- */
  81 /* static data                                                 */
  82
  83 struct tw68_tvnorm {
  84         char            *name;
  85         v4l2_std_id     id;
  86
  87         /* video decoder */
  88         u32     sync_control;
  89         u32     luma_control;
  90         u32     chroma_ctrl1;
  91         u32     chroma_gain;
  92         u32     chroma_ctrl2;
  93         u32     vgate_misc;
  94
  95         /* video scaler */
  96         u32     h_delay;
  97         u32     h_delay0;       /* for TW6800 */
  98         u32     h_start;
  99         u32     h_stop;
 100         u32     v_delay;
 101         u32     video_v_start;
 102         u32     video_v_stop;
 103         u32     vbi_v_start_0;
 104         u32     vbi_v_stop_0;
 105         u32     vbi_v_start_1;
 106
 107         /* Techwell specific */
 108         u32     format;
 109 };
 110
 111 struct tw68_format {
 112         char    *name;
 113         u32     fourcc;
 114         u32     depth;
 115         u32     twformat;
 116 };
 117
 118 /* ----------------------------------------------------------- */
 119 /* card configuration                                     */
 120
 121 #define TW68_BOARD_NOAUTO               UNSET
 122 #define TW68_BOARD_UNKNOWN              0
 123 #define TW68_BOARD_GENERIC_6802         1
 124
 125 #define TW68_MAXBOARDS                  16
 126 #define TW68_INPUT_MAX                  4
 127
 128 /* ----------------------------------------------------------- */
 129 /* device / file handle status                                 */
 130
 131 #define BUFFER_TIMEOUT  msecs_to_jiffies(500)   /* 0.5 seconds */
 132
 133 struct tw68_dev;        /* forward delclaration */
 134
 135 /* buffer for one video/vbi/ts frame */
 136 struct tw68_buf {
 137         struct vb2_buffer vb;
 138         struct list_head list;
 139
 140         unsigned int   size;
 141         __le32         *cpu;
 142         __le32         *jmp;
 143         dma_addr_t     dma;
 144 };
 145
 146 struct tw68_fmt {
 147         char                    *name;
 148         u32                     fourcc; /* v4l2 format id */
 149         int                     depth;
 150         int                     flags;
 151         u32                     twformat;
 152 };
 153
 154 /* global device status */
 155 struct tw68_dev {
 156         struct mutex            lock;
 157         spinlock_t              slock;
 158         u16                     instance;
 159         struct v4l2_device      v4l2_dev;
 160
 161         /* various device info */
 162         enum tw68_decoder_type  vdecoder;
 163         struct video_device     vdev;
 164         struct v4l2_ctrl_handler hdl;
 165
 166         /* pci i/o */
 167         char                    *name;
 168         struct pci_dev          *pci;
 169         unsigned char           pci_rev, pci_lat;
 170         u32                     __iomem *lmmio;
 171         u8                      __iomem *bmmio;
 172         u32                     pci_irqmask;
 173         /* The irq mask to be used will depend upon the chip type */
 174         u32                     board_virqmask;
 175
 176         /* video capture */
 177         const struct tw68_format *fmt;
 178         unsigned                width, height;
 179         unsigned                seqnr;
 180         unsigned                field;
 181         struct vb2_queue        vidq;
 182         struct list_head        active;
 183         void                    *alloc_ctx;
 184
 185         /* various v4l controls */
 186         const struct tw68_tvnorm *tvnorm;       /* video */
 187
 188         int                     input;
 189 };
 190
 191 /* ----------------------------------------------------------- */
 192
 193 #define tw_readl(reg)           readl(dev->lmmio + ((reg) >> 2))
 194 #define tw_readb(reg)           readb(dev->bmmio + (reg))
 195 #define tw_writel(reg, value)   writel((value), dev->lmmio + ((reg) >> 2))
 196 #define tw_writeb(reg, value)   writeb((value), dev->bmmio + (reg))
 197
 198 #define tw_andorl(reg, mask, value) \
 199                 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
 200                 ((value) & (mask)), dev->lmmio+((reg)>>2))
 201 #define tw_andorb(reg, mask, value) \
 202                 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
 203                 ((value) & (mask)), dev->bmmio+(reg))
 204 #define tw_setl(reg, bit)       tw_andorl((reg), (bit), (bit))
 205 #define tw_setb(reg, bit)       tw_andorb((reg), (bit), (bit))
 206 #define tw_clearl(reg, bit)     \
 207                 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
 208                 dev->lmmio + ((reg) >> 2))
 209 #define tw_clearb(reg, bit)     \
 210                 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
 211                 dev->bmmio + (reg))
 212
 213 #define tw_wait(us) { udelay(us); }
 214
 215 /* ----------------------------------------------------------- */
 216 /* tw68-video.c                                                */
 217
 218 void tw68_set_tvnorm_hw(struct tw68_dev *dev);
 219
 220 int tw68_video_init1(struct tw68_dev *dev);
 221 int tw68_video_init2(struct tw68_dev *dev, int video_nr);
 222 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
 223 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
 224
 225 /* ----------------------------------------------------------- */
 226 /* tw68-risc.c                                                 */
 227
 228 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
 229         struct scatterlist *sglist, unsigned int top_offset,
 230         unsigned int bottom_offset, unsigned int bpl,
 231         unsigned int padding, unsigned int lines);