root/drivers/media/pci/tw68/tw68.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *  tw68 driver common header file
   4  *
   5  *  Much of this code is derived from the cx88 and sa7134 drivers, which
   6  *  were in turn derived from the bt87x driver.  The original work was by
   7  *  Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,
   8  *  Hans Verkuil, Andy Walls and many others.  Their work is gratefully
   9  *  acknowledged.  Full credit goes to them - any problems within this code
  10  *  are mine.
  11  *
  12  *  Copyright (C) 2009  William M. Brack
  13  *
  14  *  Refactored and updated to the latest v4l core frameworks:
  15  *
  16  *  Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>
  17  */
  18 
  19 #include <linux/pci.h>
  20 #include <linux/videodev2.h>
  21 #include <linux/notifier.h>
  22 #include <linux/delay.h>
  23 #include <linux/mutex.h>
  24 #include <linux/io.h>
  25 
  26 #include <media/v4l2-common.h>
  27 #include <media/v4l2-ioctl.h>
  28 #include <media/v4l2-ctrls.h>
  29 #include <media/v4l2-device.h>
  30 #include <media/videobuf2-v4l2.h>
  31 #include <media/videobuf2-dma-sg.h>
  32 
  33 #include "tw68-reg.h"
  34 
  35 #define UNSET   (-1U)
  36 
  37 #define TW68_NORMS ( \
  38         V4L2_STD_NTSC    | V4L2_STD_PAL       | V4L2_STD_SECAM    | \
  39         V4L2_STD_PAL_M   | V4L2_STD_PAL_Nc    | V4L2_STD_PAL_60)
  40 
  41 #define TW68_VID_INTS   (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \
  42                          TW68_FFOF   | TW68_DMAPI)
  43 /* TW6800 chips have trouble with these, so we don't set them for that chip */
  44 #define TW68_VID_INTSX  (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)
  45 
  46 #define TW68_I2C_INTS   (TW68_SBERR | TW68_SBDONE | TW68_SBERR2  | \
  47                          TW68_SBDONE2)
  48 
  49 enum tw68_decoder_type {
  50         TW6800,
  51         TW6801,
  52         TW6804,
  53         TWXXXX,
  54 };
  55 
  56 /* ----------------------------------------------------------- */
  57 /* static data                                                 */
  58 
  59 struct tw68_tvnorm {
  60         char            *name;
  61         v4l2_std_id     id;
  62 
  63         /* video decoder */
  64         u32     sync_control;
  65         u32     luma_control;
  66         u32     chroma_ctrl1;
  67         u32     chroma_gain;
  68         u32     chroma_ctrl2;
  69         u32     vgate_misc;
  70 
  71         /* video scaler */
  72         u32     h_delay;
  73         u32     h_delay0;       /* for TW6800 */
  74         u32     h_start;
  75         u32     h_stop;
  76         u32     v_delay;
  77         u32     video_v_start;
  78         u32     video_v_stop;
  79         u32     vbi_v_start_0;
  80         u32     vbi_v_stop_0;
  81         u32     vbi_v_start_1;
  82 
  83         /* Techwell specific */
  84         u32     format;
  85 };
  86 
  87 struct tw68_format {
  88         u32     fourcc;
  89         u32     depth;
  90         u32     twformat;
  91 };
  92 
  93 /* ----------------------------------------------------------- */
  94 /* card configuration                                     */
  95 
  96 #define TW68_BOARD_NOAUTO               UNSET
  97 #define TW68_BOARD_UNKNOWN              0
  98 #define TW68_BOARD_GENERIC_6802         1
  99 
 100 #define TW68_MAXBOARDS                  16
 101 #define TW68_INPUT_MAX                  4
 102 
 103 /* ----------------------------------------------------------- */
 104 /* device / file handle status                                 */
 105 
 106 #define BUFFER_TIMEOUT  msecs_to_jiffies(500)   /* 0.5 seconds */
 107 
 108 struct tw68_dev;        /* forward delclaration */
 109 
 110 /* buffer for one video/vbi/ts frame */
 111 struct tw68_buf {
 112         struct vb2_v4l2_buffer vb;
 113         struct list_head list;
 114 
 115         unsigned int   size;
 116         __le32         *cpu;
 117         __le32         *jmp;
 118         dma_addr_t     dma;
 119 };
 120 
 121 struct tw68_fmt {
 122         char                    *name;
 123         u32                     fourcc; /* v4l2 format id */
 124         int                     depth;
 125         int                     flags;
 126         u32                     twformat;
 127 };
 128 
 129 /* global device status */
 130 struct tw68_dev {
 131         struct mutex            lock;
 132         spinlock_t              slock;
 133         u16                     instance;
 134         struct v4l2_device      v4l2_dev;
 135 
 136         /* various device info */
 137         enum tw68_decoder_type  vdecoder;
 138         struct video_device     vdev;
 139         struct v4l2_ctrl_handler hdl;
 140 
 141         /* pci i/o */
 142         char                    *name;
 143         struct pci_dev          *pci;
 144         unsigned char           pci_rev, pci_lat;
 145         u32                     __iomem *lmmio;
 146         u8                      __iomem *bmmio;
 147         u32                     pci_irqmask;
 148         /* The irq mask to be used will depend upon the chip type */
 149         u32                     board_virqmask;
 150 
 151         /* video capture */
 152         const struct tw68_format *fmt;
 153         unsigned                width, height;
 154         unsigned                seqnr;
 155         unsigned                field;
 156         struct vb2_queue        vidq;
 157         struct list_head        active;
 158 
 159         /* various v4l controls */
 160         const struct tw68_tvnorm *tvnorm;       /* video */
 161 
 162         int                     input;
 163 };
 164 
 165 /* ----------------------------------------------------------- */
 166 
 167 #define tw_readl(reg)           readl(dev->lmmio + ((reg) >> 2))
 168 #define tw_readb(reg)           readb(dev->bmmio + (reg))
 169 #define tw_writel(reg, value)   writel((value), dev->lmmio + ((reg) >> 2))
 170 #define tw_writeb(reg, value)   writeb((value), dev->bmmio + (reg))
 171 
 172 #define tw_andorl(reg, mask, value) \
 173                 writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
 174                 ((value) & (mask)), dev->lmmio+((reg)>>2))
 175 #define tw_andorb(reg, mask, value) \
 176                 writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
 177                 ((value) & (mask)), dev->bmmio+(reg))
 178 #define tw_setl(reg, bit)       tw_andorl((reg), (bit), (bit))
 179 #define tw_setb(reg, bit)       tw_andorb((reg), (bit), (bit))
 180 #define tw_clearl(reg, bit)     \
 181                 writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
 182                 dev->lmmio + ((reg) >> 2))
 183 #define tw_clearb(reg, bit)     \
 184                 writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
 185                 dev->bmmio + (reg))
 186 
 187 #define tw_wait(us) { udelay(us); }
 188 
 189 /* ----------------------------------------------------------- */
 190 /* tw68-video.c                                                */
 191 
 192 void tw68_set_tvnorm_hw(struct tw68_dev *dev);
 193 
 194 int tw68_video_init1(struct tw68_dev *dev);
 195 int tw68_video_init2(struct tw68_dev *dev, int video_nr);
 196 void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
 197 int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
 198 
 199 /* ----------------------------------------------------------- */
 200 /* tw68-risc.c                                                 */
 201 
 202 int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
 203         struct scatterlist *sglist, unsigned int top_offset,
 204         unsigned int bottom_offset, unsigned int bpl,
 205         unsigned int padding, unsigned int lines);