linux/drivers/media/usb/au0828/au0828.h
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   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 *  Driver for the Auvitek AU0828 USB bridge
   4 *
   5 *  Copyright (c) 2008 Steven Toth <stoth@linuxtv.org>
   6 */
   7
   8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   9
  10#include <linux/bitops.h>
  11#include <linux/usb.h>
  12#include <linux/i2c.h>
  13#include <linux/i2c-algo-bit.h>
  14#include <media/tveeprom.h>
  15
  16/* Analog */
  17#include <linux/videodev2.h>
  18#include <media/videobuf2-v4l2.h>
  19#include <media/videobuf2-vmalloc.h>
  20#include <media/v4l2-device.h>
  21#include <media/v4l2-ctrls.h>
  22#include <media/v4l2-fh.h>
  23#include <media/media-device.h>
  24#include <media/media-dev-allocator.h>
  25
  26/* DVB */
  27#include <media/demux.h>
  28#include <media/dmxdev.h>
  29#include <media/dvb_demux.h>
  30#include <media/dvb_frontend.h>
  31#include <media/dvb_net.h>
  32#include <media/dvbdev.h>
  33
  34#include "au0828-reg.h"
  35#include "au0828-cards.h"
  36
  37#define URB_COUNT   16
  38#define URB_BUFSIZE (0xe522)
  39
  40/* Analog constants */
  41#define NTSC_STD_W      720
  42#define NTSC_STD_H      480
  43
  44#define AU0828_INTERLACED_DEFAULT       1
  45
  46/* Definition for AU0828 USB transfer */
  47#define AU0828_MAX_ISO_BUFS    12  /* maybe resize this value in the future */
  48#define AU0828_ISO_PACKETS_PER_URB      128
  49
  50#define AU0828_MIN_BUF 4
  51#define AU0828_DEF_BUF 8
  52
  53#define AU0828_MAX_INPUT        4
  54
  55/* au0828 resource types (used for res_get/res_lock etc */
  56#define AU0828_RESOURCE_VIDEO 0x01
  57#define AU0828_RESOURCE_VBI   0x02
  58
  59enum au0828_itype {
  60        AU0828_VMUX_UNDEFINED = 0,
  61        AU0828_VMUX_COMPOSITE,
  62        AU0828_VMUX_SVIDEO,
  63        AU0828_VMUX_CABLE,
  64        AU0828_VMUX_TELEVISION,
  65        AU0828_VMUX_DVB,
  66};
  67
  68struct au0828_input {
  69        enum au0828_itype type;
  70        unsigned int vmux;
  71        unsigned int amux;
  72        void (*audio_setup) (void *priv, int enable);
  73};
  74
  75struct au0828_board {
  76        char *name;
  77        unsigned int tuner_type;
  78        unsigned char tuner_addr;
  79        unsigned char i2c_clk_divider;
  80        unsigned char has_ir_i2c:1;
  81        unsigned char has_analog:1;
  82        struct au0828_input input[AU0828_MAX_INPUT];
  83};
  84
  85struct au0828_dvb {
  86        struct mutex lock;
  87        struct dvb_adapter adapter;
  88        struct dvb_frontend *frontend;
  89        struct dvb_demux demux;
  90        struct dmxdev dmxdev;
  91        struct dmx_frontend fe_hw;
  92        struct dmx_frontend fe_mem;
  93        struct dvb_net net;
  94        int feeding;
  95        int start_count;
  96        int stop_count;
  97
  98        int (*set_frontend)(struct dvb_frontend *fe);
  99};
 100
 101enum au0828_stream_state {
 102        STREAM_OFF,
 103        STREAM_INTERRUPT,
 104        STREAM_ON
 105};
 106
 107#define AUVI_INPUT(nr) (dev->board.input[nr])
 108
 109/* device state */
 110enum au0828_dev_state {
 111        DEV_INITIALIZED = 0,
 112        DEV_DISCONNECTED = 1,
 113        DEV_MISCONFIGURED = 2
 114};
 115
 116struct au0828_dev;
 117
 118struct au0828_usb_isoc_ctl {
 119                /* max packet size of isoc transaction */
 120        int                             max_pkt_size;
 121
 122                /* number of allocated urbs */
 123        int                             num_bufs;
 124
 125                /* urb for isoc transfers */
 126        struct urb                      **urb;
 127
 128                /* transfer buffers for isoc transfer */
 129        char                            **transfer_buffer;
 130
 131                /* Last buffer command and region */
 132        u8                              cmd;
 133        int                             pos, size, pktsize;
 134
 135                /* Last field: ODD or EVEN? */
 136        int                             field;
 137
 138                /* Stores incomplete commands */
 139        u32                             tmp_buf;
 140        int                             tmp_buf_len;
 141
 142                /* Stores already requested buffers */
 143        struct au0828_buffer            *buf;
 144        struct au0828_buffer            *vbi_buf;
 145
 146                /* Stores the number of received fields */
 147        int                             nfields;
 148
 149                /* isoc urb callback */
 150        int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb);
 151
 152};
 153
 154/* buffer for one video frame */
 155struct au0828_buffer {
 156        /* common v4l buffer stuff -- must be first */
 157        struct vb2_v4l2_buffer vb;
 158        struct list_head list;
 159
 160        void *mem;
 161        unsigned long length;
 162        int top_field;
 163        /* pointer to vmalloc memory address in vb */
 164        char *vb_buf;
 165};
 166
 167struct au0828_dmaqueue {
 168        struct list_head       active;
 169        /* Counters to control buffer fill */
 170        int                    pos;
 171};
 172
 173struct au0828_dev {
 174        struct mutex mutex;
 175        struct usb_device       *usbdev;
 176        int                     boardnr;
 177        struct au0828_board     board;
 178        u8                      ctrlmsg[64];
 179
 180        /* I2C */
 181        struct i2c_adapter              i2c_adap;
 182        struct i2c_algorithm            i2c_algo;
 183        struct i2c_client               i2c_client;
 184        u32                             i2c_rc;
 185
 186        /* Digital */
 187        struct au0828_dvb               dvb;
 188        struct work_struct              restart_streaming;
 189        struct timer_list               bulk_timeout;
 190        int                             bulk_timeout_running;
 191
 192#ifdef CONFIG_VIDEO_AU0828_V4L2
 193        /* Analog */
 194        struct v4l2_device v4l2_dev;
 195        struct v4l2_ctrl_handler v4l2_ctrl_hdl;
 196#endif
 197#ifdef CONFIG_VIDEO_AU0828_RC
 198        struct au0828_rc *ir;
 199#endif
 200
 201        struct video_device vdev;
 202        struct video_device vbi_dev;
 203
 204        /* Videobuf2 */
 205        struct vb2_queue vb_vidq;
 206        struct vb2_queue vb_vbiq;
 207        struct mutex vb_queue_lock;
 208        struct mutex vb_vbi_queue_lock;
 209
 210        unsigned int frame_count;
 211        unsigned int vbi_frame_count;
 212
 213        struct timer_list vid_timeout;
 214        int vid_timeout_running;
 215        struct timer_list vbi_timeout;
 216        int vbi_timeout_running;
 217
 218        int users;
 219        int streaming_users;
 220
 221        int width;
 222        int height;
 223        int vbi_width;
 224        int vbi_height;
 225        u32 vbi_read;
 226        v4l2_std_id std;
 227        u32 field_size;
 228        u32 frame_size;
 229        u32 bytesperline;
 230        int type;
 231        u8 ctrl_ainput;
 232        __u8 isoc_in_endpointaddr;
 233        u8 isoc_init_ok;
 234        int greenscreen_detected;
 235        int ctrl_freq;
 236        int input_type;
 237        int std_set_in_tuner_core;
 238        unsigned int ctrl_input;
 239        long unsigned int dev_state; /* defined at enum au0828_dev_state */;
 240        enum au0828_stream_state stream_state;
 241        wait_queue_head_t open;
 242
 243        struct mutex lock;
 244
 245        /* Isoc control struct */
 246        struct au0828_dmaqueue vidq;
 247        struct au0828_dmaqueue vbiq;
 248        struct au0828_usb_isoc_ctl isoc_ctl;
 249        spinlock_t slock;
 250
 251        /* usb transfer */
 252        int alt;                /* alternate */
 253        int max_pkt_size;       /* max packet size of isoc transaction */
 254        int num_alt;            /* Number of alternative settings */
 255        unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
 256        struct urb *urb[AU0828_MAX_ISO_BUFS];   /* urb for isoc transfers */
 257        char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc
 258                                                   transfer */
 259
 260        /* DVB USB / URB Related */
 261        bool            urb_streaming, need_urb_start;
 262        struct urb      *urbs[URB_COUNT];
 263
 264        /* Preallocated transfer digital transfer buffers */
 265
 266        char *dig_transfer_buffer[URB_COUNT];
 267
 268#ifdef CONFIG_MEDIA_CONTROLLER
 269        struct media_device *media_dev;
 270        struct media_pad video_pad, vbi_pad;
 271        struct media_entity *decoder;
 272        struct media_entity input_ent[AU0828_MAX_INPUT];
 273        struct media_pad input_pad[AU0828_MAX_INPUT];
 274        struct media_entity_notify entity_notify;
 275        struct media_entity *tuner;
 276        struct media_link *active_link;
 277        struct media_entity *active_source;
 278        struct media_entity *active_sink;
 279        struct media_entity *active_link_owner;
 280        struct media_entity *active_link_user;
 281        struct media_pipeline *active_link_user_pipe;
 282        bool active_link_shared;
 283#endif
 284};
 285
 286
 287/* ----------------------------------------------------------- */
 288#define au0828_read(dev, reg) au0828_readreg(dev, reg)
 289#define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value)
 290#define au0828_andor(dev, reg, mask, value)                             \
 291         au0828_writereg(dev, reg,                                      \
 292        (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask)))
 293
 294#define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit))
 295#define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0)
 296
 297/* ----------------------------------------------------------- */
 298/* au0828-core.c */
 299extern u32 au0828_read(struct au0828_dev *dev, u16 reg);
 300extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val);
 301extern void au0828_usb_release(struct au0828_dev *dev);
 302extern int au0828_debug;
 303
 304/* ----------------------------------------------------------- */
 305/* au0828-cards.c */
 306extern struct au0828_board au0828_boards[];
 307extern struct usb_device_id au0828_usb_id_table[];
 308extern void au0828_gpio_setup(struct au0828_dev *dev);
 309extern int au0828_tuner_callback(void *priv, int component,
 310                                 int command, int arg);
 311extern void au0828_card_setup(struct au0828_dev *dev);
 312
 313/* ----------------------------------------------------------- */
 314/* au0828-i2c.c */
 315extern int au0828_i2c_register(struct au0828_dev *dev);
 316extern int au0828_i2c_unregister(struct au0828_dev *dev);
 317
 318/* ----------------------------------------------------------- */
 319/* au0828-video.c */
 320extern int au0828_start_analog_streaming(struct vb2_queue *vq,
 321                                                unsigned int count);
 322extern void au0828_stop_vbi_streaming(struct vb2_queue *vq);
 323#ifdef CONFIG_VIDEO_AU0828_V4L2
 324extern int au0828_v4l2_device_register(struct usb_interface *interface,
 325                                      struct au0828_dev *dev);
 326
 327extern int au0828_analog_register(struct au0828_dev *dev,
 328                           struct usb_interface *interface);
 329extern int au0828_analog_unregister(struct au0828_dev *dev);
 330extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev);
 331extern void au0828_v4l2_suspend(struct au0828_dev *dev);
 332extern void au0828_v4l2_resume(struct au0828_dev *dev);
 333#else
 334static inline int au0828_v4l2_device_register(struct usb_interface *interface,
 335                                              struct au0828_dev *dev)
 336{ return 0; };
 337static inline int au0828_analog_register(struct au0828_dev *dev,
 338                                     struct usb_interface *interface)
 339{ return 0; };
 340static inline int au0828_analog_unregister(struct au0828_dev *dev)
 341{ return 0; };
 342static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { };
 343static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { };
 344static inline void au0828_v4l2_resume(struct au0828_dev *dev) { };
 345#endif
 346
 347/* ----------------------------------------------------------- */
 348/* au0828-dvb.c */
 349extern int au0828_dvb_register(struct au0828_dev *dev);
 350extern void au0828_dvb_unregister(struct au0828_dev *dev);
 351void au0828_dvb_suspend(struct au0828_dev *dev);
 352void au0828_dvb_resume(struct au0828_dev *dev);
 353
 354/* au0828-vbi.c */
 355extern const struct vb2_ops au0828_vbi_qops;
 356
 357#define dprintk(level, fmt, arg...)\
 358        do { if (au0828_debug & level)\
 359                printk(KERN_DEBUG pr_fmt(fmt), ## arg);\
 360        } while (0)
 361
 362/* au0828-input.c */
 363#ifdef CONFIG_VIDEO_AU0828_RC
 364extern int au0828_rc_register(struct au0828_dev *dev);
 365extern void au0828_rc_unregister(struct au0828_dev *dev);
 366extern int au0828_rc_suspend(struct au0828_dev *dev);
 367extern int au0828_rc_resume(struct au0828_dev *dev);
 368#else
 369static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; }
 370static inline void au0828_rc_unregister(struct au0828_dev *dev) { }
 371static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; }
 372static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; }
 373#endif
 374
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