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-v4l2.h>
  40 #include <media/videobuf2-dma-sg.h>
  41
  42 #include "tw68-reg.h"
  43
  44 #define UNSET   (-1U)
  45
  46 #define TW68_NORMS ( \
  47         V4L2_STD_NTSC    | V4L2_STD_PAL       | V4L2_STD_SECAM    | \
  48         V4L2_STD_PAL_M   | V4L2_STD_PAL_Nc    | V4L2_STD_PAL_60)
  49
  50 #define TW68_VID_INTS   (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \
  51                          TW68_FFOF   | TW68_DMAPI)
  52 /* TW6800 chips have trouble with these, so we don't set them for that chip */
  53 #define TW68_VID_INTSX  (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)
  54
  55 #define TW68_I2C_INTS   (TW68_SBERR | TW68_SBDONE | TW68_SBERR2  | \
  56                          TW68_SBDONE2)
  57
  58 enum tw68_decoder_type {
  59         TW6800,
  60         TW6801,
  61         TW6804,
  62         TWXXXX,
  63 };
  64
  65 /* ----------------------------------------------------------- */
  66 /* static data                                                 */
  67
  68 struct tw68_tvnorm {
  69         char            *name;
  70         v4l2_std_id     id;
  71
  72         /* video decoder */
  73         u32     sync_control;
  74         u32     luma_control;
  75         u32     chroma_ctrl1;
  76         u32     chroma_gain;
  77         u32     chroma_ctrl2;
  78         u32     vgate_misc;
  79
  80         /* video scaler */
  81         u32     h_delay;
  82         u32     h_delay0;       /* for TW6800 */
  83         u32     h_start;
  84         u32     h_stop;
  85         u32     v_delay;
  86         u32     video_v_start;
  87         u32     video_v_stop;
  88         u32     vbi_v_start_0;
  89         u32     vbi_v_stop_0;
  90         u32     vbi_v_start_1;
  91
  92         /* Techwell specific */
  93         u32     format;
  94 };
  95
  96 struct tw68_format {
  97         char    *name;
  98         u32     fourcc;
  99         u32     depth;
 100         u32     twformat;
 101 };
 102
 103 /* ----------------------------------------------------------- */
 104 /* card configuration                                     */
 105
 106 #define TW68_BOARD_NOAUTO               UNSET
 107 #define TW68_BOARD_UNKNOWN              0
 108 #define TW68_BOARD_GENERIC_6802         1
 109
 110 #define TW68_MAXBOARDS                  16
 111 #define TW68_INPUT_MAX                  4
 112
 113 /* ----------------------------------------------------------- */
 114 /* device / file handle status                                 */
 115
 116 #define BUFFER_TIMEOUT  msecs_to_jiffies(500)   /* 0.5 seconds */
 117
 118 struct tw68_dev;        /* forward delclaration */
 119
 120 /* buffer for one video/vbi/ts frame */
 121 struct tw68_buf {
 122         struct vb2_v4l2_buffer vb;
 123         struct list_head list;
 124
 125         unsigned int   size;
 126         __le32         *cpu;
 127         __le32         *jmp;
 128         dma_addr_t     dma;
 129 };
 130
 131 struct tw68_fmt {
 132         char                    *name;
 133         u32                     fourcc; /* v4l2 format id */
 134         int                     depth;
 135         int                     flags;
 136         u32                     twformat;
 137 };
 138
 139 /* global device status */
 140 struct tw68_dev {
 141         struct mutex            lock;
 142         spinlock_t              slock;
 143         u16                     instance;
 144         struct v4l2_device      v4l2_dev;
 145
 146         /* various device info */
 147         enum tw68_decoder_type  vdecoder;
 148         struct video_device     vdev;
 149         struct v4l2_ctrl_handler hdl;
 150
 151         /* pci i/o */
 152         char                    *name;
 153         struct pci_dev          *pci;
 154         unsigned char           pci_rev, pci_lat;
 155         u32                     __iomem *lmmio;
 156         u8                      __iomem *bmmio;
 157         u32                     pci_irqmask;
 158         /* The irq mask to be used will depend upon the chip type */
 159         u32                     board_virqmask;
 160
 161         /* video capture */
 162         const struct tw68_format *fmt;
 163         unsigned                width, height;
 164         unsigned                seqnr;
 165         unsigned                field;
 166         struct vb2_queue        vidq;
 167         struct list_head        active;
 168         void                    *alloc_ctx;
 169
 170         /* various v4l controls */
 171         const struct tw68_tvnorm *tvnorm;       /* video */
 172
 173         int                     input;
 174 };
 175
 176 /* ----------------------------------------------------------- */
 177
 178 #define tw_readl(reg)           readl(dev->lmmio + ((reg) >> 2))
 179 #define tw_readb(reg)           readb(dev->bmmio + (reg))
 180 #define tw_writel(reg, value)   writel((value), dev->lmmio + ((reg) >> 2))
 181 #define tw_writeb(reg, value)   writeb((value), dev->bmmio + (reg))
 182
 183 #define tw_andorl(reg, mask, value) \
 184                 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
 185                 ((value) & (mask)), dev->lmmio+((reg)>>2))
 186 #define tw_andorb(reg, mask, value) \
 187                 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
 188                 ((value) & (mask)), dev->bmmio+(reg))
 189 #define tw_setl(reg, bit)       tw_andorl((reg), (bit), (bit))
 190 #define tw_setb(reg, bit)       tw_andorb((reg), (bit), (bit))
 191 #define tw_clearl(reg, bit)     \
 192                 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
 193                 dev->lmmio + ((reg) >> 2))
 194 #define tw_clearb(reg, bit)     \
 195                 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
 196                 dev->bmmio + (reg))
 197
 198 #define tw_wait(us) { udelay(us); }
 199
 200 /* ----------------------------------------------------------- */
 201 /* tw68-video.c                                                */
 202
 203 void tw68_set_tvnorm_hw(struct tw68_dev *dev);
 204
 205 int tw68_video_init1(struct tw68_dev *dev);
 206 int tw68_video_init2(struct tw68_dev *dev, int video_nr);
 207 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
 208 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
 209
 210 /* ----------------------------------------------------------- */
 211 /* tw68-risc.c                                                 */
 212
 213 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
 214         struct scatterlist *sglist, unsigned int top_offset,
 215         unsigned int bottom_offset, unsigned int bpl,
 216         unsigned int padding, unsigned int lines);