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 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 23 24 #include <linux/usb.h> 25 #include <linux/i2c.h> 26 #include <linux/i2c-algo-bit.h> 27 #include <media/tveeprom.h> 28 29 /* Analog */ 30 #include <linux/videodev2.h> 31 #include <media/videobuf-vmalloc.h> 32 #include <media/v4l2-device.h> 33 #include <media/v4l2-ctrls.h> 34 #include <media/v4l2-fh.h> 35 36 /* DVB */ 37 #include "demux.h" 38 #include "dmxdev.h" 39 #include "dvb_demux.h" 40 #include "dvb_frontend.h" 41 #include "dvb_net.h" 42 #include "dvbdev.h" 43 44 #include "au0828-reg.h" 45 #include "au0828-cards.h" 46 47 #define URB_COUNT 16 48 #define URB_BUFSIZE (0xe522) 49 50 /* Analog constants */ 51 #define NTSC_STD_W 720 52 #define NTSC_STD_H 480 53 54 #define AU0828_INTERLACED_DEFAULT 1 55 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0) 56 57 /* Defination for AU0828 USB transfer */ 58 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */ 59 #define AU0828_ISO_PACKETS_PER_URB 128 60 61 #define AU0828_MIN_BUF 4 62 #define AU0828_DEF_BUF 8 63 64 #define AU0828_MAX_INPUT 4 65 66 /* au0828 resource types (used for res_get/res_lock etc */ 67 #define AU0828_RESOURCE_VIDEO 0x01 68 #define AU0828_RESOURCE_VBI 0x02 69 70 enum au0828_itype { 71 AU0828_VMUX_UNDEFINED = 0, 72 AU0828_VMUX_COMPOSITE, 73 AU0828_VMUX_SVIDEO, 74 AU0828_VMUX_CABLE, 75 AU0828_VMUX_TELEVISION, 76 AU0828_VMUX_DVB, 77 AU0828_VMUX_DEBUG 78 }; 79 80 struct au0828_input { 81 enum au0828_itype type; 82 unsigned int vmux; 83 unsigned int amux; 84 void (*audio_setup) (void *priv, int enable); 85 }; 86 87 struct au0828_board { 88 char *name; 89 unsigned int tuner_type; 90 unsigned char tuner_addr; 91 unsigned char i2c_clk_divider; 92 unsigned char has_ir_i2c:1; 93 unsigned char has_analog:1; 94 struct au0828_input input[AU0828_MAX_INPUT]; 95 96 }; 97 98 struct au0828_dvb { 99 struct mutex lock; 100 struct dvb_adapter adapter; 101 struct dvb_frontend *frontend; 102 struct dvb_demux demux; 103 struct dmxdev dmxdev; 104 struct dmx_frontend fe_hw; 105 struct dmx_frontend fe_mem; 106 struct dvb_net net; 107 int feeding; 108 int start_count; 109 int stop_count; 110 111 int (*set_frontend)(struct dvb_frontend *fe); 112 }; 113 114 enum au0828_stream_state { 115 STREAM_OFF, 116 STREAM_INTERRUPT, 117 STREAM_ON 118 }; 119 120 #define AUVI_INPUT(nr) (dev->board.input[nr]) 121 122 /* device state */ 123 enum au0828_dev_state { 124 DEV_INITIALIZED = 0x01, 125 DEV_DISCONNECTED = 0x02, 126 DEV_MISCONFIGURED = 0x04 127 }; 128 129 struct au0828_fh { 130 /* must be the first field of this struct! */ 131 struct v4l2_fh fh; 132 133 struct au0828_dev *dev; 134 unsigned int resources; 135 136 struct videobuf_queue vb_vidq; 137 struct videobuf_queue vb_vbiq; 138 enum v4l2_buf_type type; 139 }; 140 141 struct au0828_usb_isoc_ctl { 142 /* max packet size of isoc transaction */ 143 int max_pkt_size; 144 145 /* number of allocated urbs */ 146 int num_bufs; 147 148 /* urb for isoc transfers */ 149 struct urb **urb; 150 151 /* transfer buffers for isoc transfer */ 152 char **transfer_buffer; 153 154 /* Last buffer command and region */ 155 u8 cmd; 156 int pos, size, pktsize; 157 158 /* Last field: ODD or EVEN? */ 159 int field; 160 161 /* Stores incomplete commands */ 162 u32 tmp_buf; 163 int tmp_buf_len; 164 165 /* Stores already requested buffers */ 166 struct au0828_buffer *buf; 167 struct au0828_buffer *vbi_buf; 168 169 /* Stores the number of received fields */ 170 int nfields; 171 172 /* isoc urb callback */ 173 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 174 175 }; 176 177 /* buffer for one video frame */ 178 struct au0828_buffer { 179 /* common v4l buffer stuff -- must be first */ 180 struct videobuf_buffer vb; 181 182 struct list_head frame; 183 int top_field; 184 int receiving; 185 }; 186 187 struct au0828_dmaqueue { 188 struct list_head active; 189 struct list_head queued; 190 191 wait_queue_head_t wq; 192 193 /* Counters to control buffer fill */ 194 int pos; 195 }; 196 197 struct au0828_dev { 198 struct mutex mutex; 199 struct usb_device *usbdev; 200 int boardnr; 201 struct au0828_board board; 202 u8 ctrlmsg[64]; 203 204 /* I2C */ 205 struct i2c_adapter i2c_adap; 206 struct i2c_algorithm i2c_algo; 207 struct i2c_client i2c_client; 208 u32 i2c_rc; 209 210 /* Digital */ 211 struct au0828_dvb dvb; 212 struct work_struct restart_streaming; 213 214 #ifdef CONFIG_VIDEO_AU0828_V4L2 215 /* Analog */ 216 struct v4l2_device v4l2_dev; 217 struct v4l2_ctrl_handler v4l2_ctrl_hdl; 218 #endif 219 #ifdef CONFIG_VIDEO_AU0828_RC 220 struct au0828_rc *ir; 221 #endif 222 223 int users; 224 unsigned int resources; /* resources in use */ 225 struct video_device *vdev; 226 struct video_device *vbi_dev; 227 struct timer_list vid_timeout; 228 int vid_timeout_running; 229 struct timer_list vbi_timeout; 230 int vbi_timeout_running; 231 int width; 232 int height; 233 int vbi_width; 234 int vbi_height; 235 u32 vbi_read; 236 v4l2_std_id std; 237 u32 field_size; 238 u32 frame_size; 239 u32 bytesperline; 240 int type; 241 u8 ctrl_ainput; 242 __u8 isoc_in_endpointaddr; 243 u8 isoc_init_ok; 244 int greenscreen_detected; 245 unsigned int frame_count; 246 int ctrl_freq; 247 int input_type; 248 int std_set_in_tuner_core; 249 unsigned int ctrl_input; 250 enum au0828_dev_state dev_state; 251 enum au0828_stream_state stream_state; 252 wait_queue_head_t open; 253 254 struct mutex lock; 255 256 /* Isoc control struct */ 257 struct au0828_dmaqueue vidq; 258 struct au0828_dmaqueue vbiq; 259 struct au0828_usb_isoc_ctl isoc_ctl; 260 spinlock_t slock; 261 262 /* usb transfer */ 263 int alt; /* alternate */ 264 int max_pkt_size; /* max packet size of isoc transaction */ 265 int num_alt; /* Number of alternative settings */ 266 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ 267 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */ 268 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc 269 transfer */ 270 271 /* DVB USB / URB Related */ 272 bool urb_streaming, need_urb_start; 273 struct urb *urbs[URB_COUNT]; 274 275 /* Preallocated transfer digital transfer buffers */ 276 277 char *dig_transfer_buffer[URB_COUNT]; 278 }; 279 280 /* ----------------------------------------------------------- */ 281 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 282 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 283 #define au0828_andor(dev, reg, mask, value) \ 284 au0828_writereg(dev, reg, \ 285 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 286 287 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 288 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 289 290 /* ----------------------------------------------------------- */ 291 /* au0828-core.c */ 292 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 293 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 294 extern int au0828_debug; 295 296 /* ----------------------------------------------------------- */ 297 /* au0828-cards.c */ 298 extern struct au0828_board au0828_boards[]; 299 extern struct usb_device_id au0828_usb_id_table[]; 300 extern void au0828_gpio_setup(struct au0828_dev *dev); 301 extern int au0828_tuner_callback(void *priv, int component, 302 int command, int arg); 303 extern void au0828_card_setup(struct au0828_dev *dev); 304 305 /* ----------------------------------------------------------- */ 306 /* au0828-i2c.c */ 307 extern int au0828_i2c_register(struct au0828_dev *dev); 308 extern int au0828_i2c_unregister(struct au0828_dev *dev); 309 310 /* ----------------------------------------------------------- */ 311 /* au0828-video.c */ 312 int au0828_analog_register(struct au0828_dev *dev, 313 struct usb_interface *interface); 314 int au0828_analog_stream_disable(struct au0828_dev *d); 315 void au0828_analog_unregister(struct au0828_dev *dev); 316 #ifdef CONFIG_VIDEO_AU0828_V4L2 317 void au0828_v4l2_suspend(struct au0828_dev *dev); 318 void au0828_v4l2_resume(struct au0828_dev *dev); 319 #else 320 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { }; 321 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { }; 322 #endif 323 324 /* ----------------------------------------------------------- */ 325 /* au0828-dvb.c */ 326 extern int au0828_dvb_register(struct au0828_dev *dev); 327 extern void au0828_dvb_unregister(struct au0828_dev *dev); 328 void au0828_dvb_suspend(struct au0828_dev *dev); 329 void au0828_dvb_resume(struct au0828_dev *dev); 330 331 /* au0828-vbi.c */ 332 extern struct videobuf_queue_ops au0828_vbi_qops; 333 334 #define dprintk(level, fmt, arg...)\ 335 do { if (au0828_debug & level)\ 336 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\ 337 } while (0) 338 339 /* au0828-input.c */ 340 #ifdef CONFIG_VIDEO_AU0828_RC 341 extern int au0828_rc_register(struct au0828_dev *dev); 342 extern void au0828_rc_unregister(struct au0828_dev *dev); 343 extern int au0828_rc_suspend(struct au0828_dev *dev); 344 extern int au0828_rc_resume(struct au0828_dev *dev); 345 #else 346 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; } 347 static inline void au0828_rc_unregister(struct au0828_dev *dev) { } 348 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; } 349 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; } 350 #endif 351