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/videobuf2-v4l2.h> 32 #include <media/videobuf2-vmalloc.h> 33 #include <media/v4l2-device.h> 34 #include <media/v4l2-ctrls.h> 35 #include <media/v4l2-fh.h> 36 37 /* DVB */ 38 #include "demux.h" 39 #include "dmxdev.h" 40 #include "dvb_demux.h" 41 #include "dvb_frontend.h" 42 #include "dvb_net.h" 43 #include "dvbdev.h" 44 45 #include "au0828-reg.h" 46 #include "au0828-cards.h" 47 48 #define URB_COUNT 16 49 #define URB_BUFSIZE (0xe522) 50 51 /* Analog constants */ 52 #define NTSC_STD_W 720 53 #define NTSC_STD_H 480 54 55 #define AU0828_INTERLACED_DEFAULT 1 56 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0) 57 58 /* Defination for AU0828 USB transfer */ 59 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */ 60 #define AU0828_ISO_PACKETS_PER_URB 128 61 62 #define AU0828_MIN_BUF 4 63 #define AU0828_DEF_BUF 8 64 65 #define AU0828_MAX_INPUT 4 66 67 /* au0828 resource types (used for res_get/res_lock etc */ 68 #define AU0828_RESOURCE_VIDEO 0x01 69 #define AU0828_RESOURCE_VBI 0x02 70 71 enum au0828_itype { 72 AU0828_VMUX_UNDEFINED = 0, 73 AU0828_VMUX_COMPOSITE, 74 AU0828_VMUX_SVIDEO, 75 AU0828_VMUX_CABLE, 76 AU0828_VMUX_TELEVISION, 77 AU0828_VMUX_DVB, 78 AU0828_VMUX_DEBUG 79 }; 80 81 struct au0828_input { 82 enum au0828_itype type; 83 unsigned int vmux; 84 unsigned int amux; 85 void (*audio_setup) (void *priv, int enable); 86 }; 87 88 struct au0828_board { 89 char *name; 90 unsigned int tuner_type; 91 unsigned char tuner_addr; 92 unsigned char i2c_clk_divider; 93 unsigned char has_ir_i2c:1; 94 unsigned char has_analog:1; 95 struct au0828_input input[AU0828_MAX_INPUT]; 96 97 }; 98 99 struct au0828_dvb { 100 struct mutex lock; 101 struct dvb_adapter adapter; 102 struct dvb_frontend *frontend; 103 struct dvb_demux demux; 104 struct dmxdev dmxdev; 105 struct dmx_frontend fe_hw; 106 struct dmx_frontend fe_mem; 107 struct dvb_net net; 108 int feeding; 109 int start_count; 110 int stop_count; 111 112 int (*set_frontend)(struct dvb_frontend *fe); 113 }; 114 115 enum au0828_stream_state { 116 STREAM_OFF, 117 STREAM_INTERRUPT, 118 STREAM_ON 119 }; 120 121 #define AUVI_INPUT(nr) (dev->board.input[nr]) 122 123 /* device state */ 124 enum au0828_dev_state { 125 DEV_INITIALIZED = 0x01, 126 DEV_DISCONNECTED = 0x02, 127 DEV_MISCONFIGURED = 0x04 128 }; 129 130 struct au0828_dev; 131 132 struct au0828_usb_isoc_ctl { 133 /* max packet size of isoc transaction */ 134 int max_pkt_size; 135 136 /* number of allocated urbs */ 137 int num_bufs; 138 139 /* urb for isoc transfers */ 140 struct urb **urb; 141 142 /* transfer buffers for isoc transfer */ 143 char **transfer_buffer; 144 145 /* Last buffer command and region */ 146 u8 cmd; 147 int pos, size, pktsize; 148 149 /* Last field: ODD or EVEN? */ 150 int field; 151 152 /* Stores incomplete commands */ 153 u32 tmp_buf; 154 int tmp_buf_len; 155 156 /* Stores already requested buffers */ 157 struct au0828_buffer *buf; 158 struct au0828_buffer *vbi_buf; 159 160 /* Stores the number of received fields */ 161 int nfields; 162 163 /* isoc urb callback */ 164 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 165 166 }; 167 168 /* buffer for one video frame */ 169 struct au0828_buffer { 170 /* common v4l buffer stuff -- must be first */ 171 struct vb2_v4l2_buffer vb; 172 struct list_head list; 173 174 void *mem; 175 unsigned long length; 176 int top_field; 177 /* pointer to vmalloc memory address in vb */ 178 char *vb_buf; 179 }; 180 181 struct au0828_dmaqueue { 182 struct list_head active; 183 /* Counters to control buffer fill */ 184 int pos; 185 }; 186 187 struct au0828_dev { 188 struct mutex mutex; 189 struct usb_device *usbdev; 190 int boardnr; 191 struct au0828_board board; 192 u8 ctrlmsg[64]; 193 194 /* I2C */ 195 struct i2c_adapter i2c_adap; 196 struct i2c_algorithm i2c_algo; 197 struct i2c_client i2c_client; 198 u32 i2c_rc; 199 200 /* Digital */ 201 struct au0828_dvb dvb; 202 struct work_struct restart_streaming; 203 204 #ifdef CONFIG_VIDEO_AU0828_V4L2 205 /* Analog */ 206 struct v4l2_device v4l2_dev; 207 struct v4l2_ctrl_handler v4l2_ctrl_hdl; 208 #endif 209 #ifdef CONFIG_VIDEO_AU0828_RC 210 struct au0828_rc *ir; 211 #endif 212 213 struct video_device vdev; 214 struct video_device vbi_dev; 215 216 /* Videobuf2 */ 217 struct vb2_queue vb_vidq; 218 struct vb2_queue vb_vbiq; 219 struct mutex vb_queue_lock; 220 struct mutex vb_vbi_queue_lock; 221 222 unsigned int frame_count; 223 unsigned int vbi_frame_count; 224 225 struct timer_list vid_timeout; 226 int vid_timeout_running; 227 struct timer_list vbi_timeout; 228 int vbi_timeout_running; 229 230 int users; 231 int streaming_users; 232 233 int width; 234 int height; 235 int vbi_width; 236 int vbi_height; 237 u32 vbi_read; 238 v4l2_std_id std; 239 u32 field_size; 240 u32 frame_size; 241 u32 bytesperline; 242 int type; 243 u8 ctrl_ainput; 244 __u8 isoc_in_endpointaddr; 245 u8 isoc_init_ok; 246 int greenscreen_detected; 247 int ctrl_freq; 248 int input_type; 249 int std_set_in_tuner_core; 250 unsigned int ctrl_input; 251 enum au0828_dev_state dev_state; 252 enum au0828_stream_state stream_state; 253 wait_queue_head_t open; 254 255 struct mutex lock; 256 257 /* Isoc control struct */ 258 struct au0828_dmaqueue vidq; 259 struct au0828_dmaqueue vbiq; 260 struct au0828_usb_isoc_ctl isoc_ctl; 261 spinlock_t slock; 262 263 /* usb transfer */ 264 int alt; /* alternate */ 265 int max_pkt_size; /* max packet size of isoc transaction */ 266 int num_alt; /* Number of alternative settings */ 267 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ 268 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */ 269 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc 270 transfer */ 271 272 /* DVB USB / URB Related */ 273 bool urb_streaming, need_urb_start; 274 struct urb *urbs[URB_COUNT]; 275 276 /* Preallocated transfer digital transfer buffers */ 277 278 char *dig_transfer_buffer[URB_COUNT]; 279 }; 280 281 282 /* ----------------------------------------------------------- */ 283 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 284 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 285 #define au0828_andor(dev, reg, mask, value) \ 286 au0828_writereg(dev, reg, \ 287 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 288 289 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 290 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 291 292 /* ----------------------------------------------------------- */ 293 /* au0828-core.c */ 294 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 295 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 296 extern int au0828_debug; 297 298 /* ----------------------------------------------------------- */ 299 /* au0828-cards.c */ 300 extern struct au0828_board au0828_boards[]; 301 extern struct usb_device_id au0828_usb_id_table[]; 302 extern void au0828_gpio_setup(struct au0828_dev *dev); 303 extern int au0828_tuner_callback(void *priv, int component, 304 int command, int arg); 305 extern void au0828_card_setup(struct au0828_dev *dev); 306 307 /* ----------------------------------------------------------- */ 308 /* au0828-i2c.c */ 309 extern int au0828_i2c_register(struct au0828_dev *dev); 310 extern int au0828_i2c_unregister(struct au0828_dev *dev); 311 312 /* ----------------------------------------------------------- */ 313 /* au0828-video.c */ 314 extern int au0828_analog_register(struct au0828_dev *dev, 315 struct usb_interface *interface); 316 extern void au0828_analog_unregister(struct au0828_dev *dev); 317 extern int au0828_start_analog_streaming(struct vb2_queue *vq, 318 unsigned int count); 319 extern void au0828_stop_vbi_streaming(struct vb2_queue *vq); 320 #ifdef CONFIG_VIDEO_AU0828_V4L2 321 extern void au0828_v4l2_suspend(struct au0828_dev *dev); 322 extern void au0828_v4l2_resume(struct au0828_dev *dev); 323 #else 324 static inline void au0828_v4l2_suspend(struct au0828_dev *dev) { }; 325 static inline void au0828_v4l2_resume(struct au0828_dev *dev) { }; 326 #endif 327 328 /* ----------------------------------------------------------- */ 329 /* au0828-dvb.c */ 330 extern int au0828_dvb_register(struct au0828_dev *dev); 331 extern void au0828_dvb_unregister(struct au0828_dev *dev); 332 void au0828_dvb_suspend(struct au0828_dev *dev); 333 void au0828_dvb_resume(struct au0828_dev *dev); 334 335 /* au0828-vbi.c */ 336 extern struct vb2_ops au0828_vbi_qops; 337 338 #define dprintk(level, fmt, arg...)\ 339 do { if (au0828_debug & level)\ 340 printk(KERN_DEBUG pr_fmt(fmt), ## arg);\ 341 } while (0) 342 343 /* au0828-input.c */ 344 #ifdef CONFIG_VIDEO_AU0828_RC 345 extern int au0828_rc_register(struct au0828_dev *dev); 346 extern void au0828_rc_unregister(struct au0828_dev *dev); 347 extern int au0828_rc_suspend(struct au0828_dev *dev); 348 extern int au0828_rc_resume(struct au0828_dev *dev); 349 #else 350 static inline int au0828_rc_register(struct au0828_dev *dev) { return 0; } 351 static inline void au0828_rc_unregister(struct au0828_dev *dev) { } 352 static inline int au0828_rc_suspend(struct au0828_dev *dev) { return 0; } 353 static inline int au0828_rc_resume(struct au0828_dev *dev) { return 0; } 354 #endif 355