1 /* 2 * Driver for the Auvitek AU0828 USB bridge 3 * 4 * Copyright (c) 2008 Steven Toth <stoth@linuxtv.org> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * 15 * GNU General Public License for more details. 16 */ 17 18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 19 20 #include <linux/bitops.h> 21 #include <linux/usb.h> 22 #include <linux/i2c.h> 23 #include <linux/i2c-algo-bit.h> 24 #include <media/tveeprom.h> 25 26 /* Analog */ 27 #include <linux/videodev2.h> 28 #include <media/videobuf2-v4l2.h> 29 #include <media/videobuf2-vmalloc.h> 30 #include <media/v4l2-device.h> 31 #include <media/v4l2-ctrls.h> 32 #include <media/v4l2-fh.h> 33 #include <media/media-device.h> 34 35 /* DVB */ 36 #include <media/demux.h> 37 #include <media/dmxdev.h> 38 #include <media/dvb_demux.h> 39 #include <media/dvb_frontend.h> 40 #include <media/dvb_net.h> 41 #include <media/dvbdev.h> 42 43 #include "au0828-reg.h" 44 #include "au0828-cards.h" 45 46 #define URB_COUNT 16 47 #define URB_BUFSIZE (0xe522) 48 49 /* Analog constants */ 50 #define NTSC_STD_W 720 51 #define NTSC_STD_H 480 52 53 #define AU0828_INTERLACED_DEFAULT 1 54 55 /* Defination for AU0828 USB transfer */ 56 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */ 57 #define AU0828_ISO_PACKETS_PER_URB 128 58 59 #define AU0828_MIN_BUF 4 60 #define AU0828_DEF_BUF 8 61 62 #define AU0828_MAX_INPUT 4 63 64 /* au0828 resource types (used for res_get/res_lock etc */ 65 #define AU0828_RESOURCE_VIDEO 0x01 66 #define AU0828_RESOURCE_VBI 0x02 67 68 enum au0828_itype { 69 AU0828_VMUX_UNDEFINED = 0, 70 AU0828_VMUX_COMPOSITE, 71 AU0828_VMUX_SVIDEO, 72 AU0828_VMUX_CABLE, 73 AU0828_VMUX_TELEVISION, 74 AU0828_VMUX_DVB, 75 }; 76 77 struct au0828_input { 78 enum au0828_itype type; 79 unsigned int vmux; 80 unsigned int amux; 81 void (*audio_setup) (void *priv, int enable); 82 }; 83 84 struct au0828_board { 85 char *name; 86 unsigned int tuner_type; 87 unsigned char tuner_addr; 88 unsigned char i2c_clk_divider; 89 unsigned char has_ir_i2c:1; 90 unsigned char has_analog:1; 91 struct au0828_input input[AU0828_MAX_INPUT]; 92 }; 93 94 struct au0828_dvb { 95 struct mutex lock; 96 struct dvb_adapter adapter; 97 struct dvb_frontend *frontend; 98 struct dvb_demux demux; 99 struct dmxdev dmxdev; 100 struct dmx_frontend fe_hw; 101 struct dmx_frontend fe_mem; 102 struct dvb_net net; 103 int feeding; 104 int start_count; 105 int stop_count; 106 107 int (*set_frontend)(struct dvb_frontend *fe); 108 }; 109 110 enum au0828_stream_state { 111 STREAM_OFF, 112 STREAM_INTERRUPT, 113 STREAM_ON 114 }; 115 116 #define AUVI_INPUT(nr) (dev->board.input[nr]) 117 118 /* device state */ 119 enum au0828_dev_state { 120 DEV_INITIALIZED = 0, 121 DEV_DISCONNECTED = 1, 122 DEV_MISCONFIGURED = 2 123 }; 124 125 struct au0828_dev; 126 127 struct au0828_usb_isoc_ctl { 128 /* max packet size of isoc transaction */ 129 int max_pkt_size; 130 131 /* number of allocated urbs */ 132 int num_bufs; 133 134 /* urb for isoc transfers */ 135 struct urb **urb; 136 137 /* transfer buffers for isoc transfer */ 138 char **transfer_buffer; 139 140 /* Last buffer command and region */ 141 u8 cmd; 142 int pos, size, pktsize; 143 144 /* Last field: ODD or EVEN? */ 145 int field; 146 147 /* Stores incomplete commands */ 148 u32 tmp_buf; 149 int tmp_buf_len; 150 151 /* Stores already requested buffers */ 152 struct au0828_buffer *buf; 153 struct au0828_buffer *vbi_buf; 154 155 /* Stores the number of received fields */ 156 int nfields; 157 158 /* isoc urb callback */ 159 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 160 161 }; 162 163 /* buffer for one video frame */ 164 struct au0828_buffer { 165 /* common v4l buffer stuff -- must be first */ 166 struct vb2_v4l2_buffer vb; 167 struct list_head list; 168 169 void *mem; 170 unsigned long length; 171 int top_field; 172 /* pointer to vmalloc memory address in vb */ 173 char *vb_buf; 174 }; 175 176 struct au0828_dmaqueue { 177 struct list_head active; 178 /* Counters to control buffer fill */ 179 int pos; 180 }; 181 182 struct au0828_dev { 183 struct mutex mutex; 184 struct usb_device *usbdev; 185 int boardnr; 186 struct au0828_board board; 187 u8 ctrlmsg[64]; 188 189 /* I2C */ 190 struct i2c_adapter i2c_adap; 191 struct i2c_algorithm i2c_algo; 192 struct i2c_client i2c_client; 193 u32 i2c_rc; 194 195 /* Digital */ 196 struct au0828_dvb dvb; 197 struct work_struct restart_streaming; 198 struct timer_list bulk_timeout; 199 int bulk_timeout_running; 200 201 #ifdef CONFIG_VIDEO_AU0828_V4L2 202 /* Analog */ 203 struct v4l2_device v4l2_dev; 204 struct v4l2_ctrl_handler v4l2_ctrl_hdl; 205 #endif 206 #ifdef CONFIG_VIDEO_AU0828_RC 207 struct au0828_rc *ir; 208 #endif 209 210 struct video_device vdev; 211 struct video_device vbi_dev; 212 213 /* Videobuf2 */ 214 struct vb2_queue vb_vidq; 215 struct vb2_queue vb_vbiq; 216 struct mutex vb_queue_lock; 217 struct mutex vb_vbi_queue_lock; 218 219 unsigned int frame_count; 220 unsigned int vbi_frame_count; 221 222 struct timer_list vid_timeout; 223 int vid_timeout_running; 224 struct timer_list vbi_timeout; 225 int vbi_timeout_running; 226 227 int users; 228 int streaming_users; 229 230 int width; 231 int height; 232 int vbi_width; 233 int vbi_height; 234 u32 vbi_read; 235 v4l2_std_id std; 236 u32 field_size; 237 u32 frame_size; 238 u32 bytesperline; 239 int type; 240 u8 ctrl_ainput; 241 __u8 isoc_in_endpointaddr; 242 u8 isoc_init_ok; 243 int greenscreen_detected; 244 int ctrl_freq; 245 int input_type; 246 int std_set_in_tuner_core; 247 unsigned int ctrl_input; 248 long unsigned int dev_state; /* defined at enum au0828_dev_state */; 249 enum au0828_stream_state stream_state; 250 wait_queue_head_t open; 251 252 struct mutex lock; 253 254 /* Isoc control struct */ 255 struct au0828_dmaqueue vidq; 256 struct au0828_dmaqueue vbiq; 257 struct au0828_usb_isoc_ctl isoc_ctl; 258 spinlock_t slock; 259 260 /* usb transfer */ 261 int alt; /* alternate */ 262 int max_pkt_size; /* max packet size of isoc transaction */ 263 int num_alt; /* Number of alternative settings */ 264 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ 265 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */ 266 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc 267 transfer */ 268 269 /* DVB USB / URB Related */ 270 bool urb_streaming, need_urb_start; 271 struct urb *urbs[URB_COUNT]; 272 273 /* Preallocated transfer digital transfer buffers */ 274 275 char *dig_transfer_buffer[URB_COUNT]; 276 277 #ifdef CONFIG_MEDIA_CONTROLLER 278 struct media_device *media_dev; 279 struct media_pad video_pad, vbi_pad; 280 struct media_entity *decoder; 281 struct media_entity input_ent[AU0828_MAX_INPUT]; 282 struct media_pad input_pad[AU0828_MAX_INPUT]; 283 struct media_entity_notify entity_notify; 284 struct media_entity *tuner; 285 struct media_link *active_link; 286 struct media_entity *active_link_owner; 287 struct media_entity *active_source; 288 struct media_entity *active_sink; 289 #endif 290 }; 291 292 293 /* ----------------------------------------------------------- */ 294 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 295 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 296 #define au0828_andor(dev, reg, mask, value) \ 297 au0828_writereg(dev, reg, \ 298 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 299 300 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 301 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 302 303 /* ----------------------------------------------------------- */ 304 /* au0828-core.c */ 305 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 306 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 307 extern void au0828_usb_release(struct au0828_dev *dev); 308 extern int au0828_debug; 309 310 /* ----------------------------------------------------------- */ 311 /* au0828-cards.c */ 312 extern struct au0828_board au0828_boards[]; 313 extern struct usb_device_id au0828_usb_id_table[]; 314 extern void au0828_gpio_setup(struct au0828_dev *dev); 315 extern int au0828_tuner_callback(void *priv, int component, 316 int command, int arg); 317 extern void au0828_card_setup(struct au0828_dev *dev); 318 319 /* ----------------------------------------------------------- */ 320 /* au0828-i2c.c */ 321 extern int au0828_i2c_register(struct au0828_dev *dev); 322 extern int au0828_i2c_unregister(struct au0828_dev *dev); 323 324 /* ----------------------------------------------------------- */ 325 /* au0828-video.c */ 326 extern int au0828_start_analog_streaming(struct vb2_queue *vq, 327 unsigned int count); 328 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq); 329 #ifdef CONFIG_VIDEO_AU0828_V4L2 330 extern int au0828_v4l2_device_register(struct usb_interface *interface, 331 struct au0828_dev *dev); 332 333 extern int au0828_analog_register(struct au0828_dev *dev, 334 struct usb_interface *interface); 335 extern int au0828_analog_unregister(struct au0828_dev *dev); 336 extern void au0828_usb_v4l2_media_release(struct au0828_dev *dev); 337 extern void au0828_v4l2_suspend(struct au0828_dev *dev); 338 extern void au0828_v4l2_resume(struct au0828_dev *dev); 339 #else 340 static inline int au0828_v4l2_device_register(struct usb_interface *interface, 341 struct au0828_dev *dev) 342 { return 0; }; 343 static inline int au0828_analog_register(struct au0828_dev *dev, 344 struct usb_interface *interface) 345 { return 0; }; 346 static inline int au0828_analog_unregister(struct au0828_dev *dev) 347 { return 0; }; 348 static inline void au0828_usb_v4l2_media_release(struct au0828_dev *dev) { }; 349 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { }; 350 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { }; 351 #endif 352 353 /* ----------------------------------------------------------- */ 354 /* au0828-dvb.c */ 355 extern int au0828_dvb_register(struct au0828_dev *dev); 356 extern void au0828_dvb_unregister(struct au0828_dev *dev); 357 void au0828_dvb_suspend(struct au0828_dev *dev); 358 void au0828_dvb_resume(struct au0828_dev *dev); 359 360 /* au0828-vbi.c */ 361 extern const struct vb2_ops au0828_vbi_qops; 362 363 #define dprintk(level, fmt, arg...)\ 364 do { if (au0828_debug & level)\ 365 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\ 366 } while (0) 367 368 /* au0828-input.c */ 369 #ifdef CONFIG_VIDEO_AU0828_RC 370 extern int au0828_rc_register(struct au0828_dev *dev); 371 extern void au0828_rc_unregister(struct au0828_dev *dev); 372 extern int au0828_rc_suspend(struct au0828_dev *dev); 373 extern int au0828_rc_resume(struct au0828_dev *dev); 374 #else 375 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; } 376 static inline void au0828_rc_unregister(struct au0828_dev *dev) { } 377 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; } 378 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; } 379 #endif 380