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 #include <linux/usb.h> 23 #include <linux/i2c.h> 24 #include <linux/i2c-algo-bit.h> 25 #include <media/tveeprom.h> 26 27 /* Analog */ 28 #include <linux/videodev2.h> 29 #include <media/videobuf-vmalloc.h> 30 #include <media/v4l2-device.h> 31 #include <media/v4l2-ctrls.h> 32 #include <media/v4l2-fh.h> 33 34 /* DVB */ 35 #include "demux.h" 36 #include "dmxdev.h" 37 #include "dvb_demux.h" 38 #include "dvb_frontend.h" 39 #include "dvb_net.h" 40 #include "dvbdev.h" 41 42 #include "au0828-reg.h" 43 #include "au0828-cards.h" 44 45 #define DRIVER_NAME "au0828" 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 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0) 55 56 /* Defination for AU0828 USB transfer */ 57 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */ 58 #define AU0828_ISO_PACKETS_PER_URB 128 59 60 #define AU0828_MIN_BUF 4 61 #define AU0828_DEF_BUF 8 62 63 #define AU0828_MAX_INPUT 4 64 65 /* au0828 resource types (used for res_get/res_lock etc */ 66 #define AU0828_RESOURCE_VIDEO 0x01 67 #define AU0828_RESOURCE_VBI 0x02 68 69 enum au0828_itype { 70 AU0828_VMUX_UNDEFINED = 0, 71 AU0828_VMUX_COMPOSITE, 72 AU0828_VMUX_SVIDEO, 73 AU0828_VMUX_CABLE, 74 AU0828_VMUX_TELEVISION, 75 AU0828_VMUX_DVB, 76 AU0828_VMUX_DEBUG 77 }; 78 79 struct au0828_input { 80 enum au0828_itype type; 81 unsigned int vmux; 82 unsigned int amux; 83 void (*audio_setup) (void *priv, int enable); 84 }; 85 86 struct au0828_board { 87 char *name; 88 unsigned int tuner_type; 89 unsigned char tuner_addr; 90 unsigned char i2c_clk_divider; 91 unsigned char has_ir_i2c:1; 92 struct au0828_input input[AU0828_MAX_INPUT]; 93 94 }; 95 96 struct au0828_dvb { 97 struct mutex lock; 98 struct dvb_adapter adapter; 99 struct dvb_frontend *frontend; 100 struct dvb_demux demux; 101 struct dmxdev dmxdev; 102 struct dmx_frontend fe_hw; 103 struct dmx_frontend fe_mem; 104 struct dvb_net net; 105 int feeding; 106 int start_count; 107 int stop_count; 108 109 int (*set_frontend)(struct dvb_frontend *fe); 110 }; 111 112 enum au0828_stream_state { 113 STREAM_OFF, 114 STREAM_INTERRUPT, 115 STREAM_ON 116 }; 117 118 #define AUVI_INPUT(nr) (dev->board.input[nr]) 119 120 /* device state */ 121 enum au0828_dev_state { 122 DEV_INITIALIZED = 0x01, 123 DEV_DISCONNECTED = 0x02, 124 DEV_MISCONFIGURED = 0x04 125 }; 126 127 struct au0828_fh { 128 /* must be the first field of this struct! */ 129 struct v4l2_fh fh; 130 131 struct au0828_dev *dev; 132 unsigned int resources; 133 134 struct videobuf_queue vb_vidq; 135 struct videobuf_queue vb_vbiq; 136 enum v4l2_buf_type type; 137 }; 138 139 struct au0828_usb_isoc_ctl { 140 /* max packet size of isoc transaction */ 141 int max_pkt_size; 142 143 /* number of allocated urbs */ 144 int num_bufs; 145 146 /* urb for isoc transfers */ 147 struct urb **urb; 148 149 /* transfer buffers for isoc transfer */ 150 char **transfer_buffer; 151 152 /* Last buffer command and region */ 153 u8 cmd; 154 int pos, size, pktsize; 155 156 /* Last field: ODD or EVEN? */ 157 int field; 158 159 /* Stores incomplete commands */ 160 u32 tmp_buf; 161 int tmp_buf_len; 162 163 /* Stores already requested buffers */ 164 struct au0828_buffer *buf; 165 struct au0828_buffer *vbi_buf; 166 167 /* Stores the number of received fields */ 168 int nfields; 169 170 /* isoc urb callback */ 171 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 172 173 }; 174 175 /* buffer for one video frame */ 176 struct au0828_buffer { 177 /* common v4l buffer stuff -- must be first */ 178 struct videobuf_buffer vb; 179 180 struct list_head frame; 181 int top_field; 182 int receiving; 183 }; 184 185 struct au0828_dmaqueue { 186 struct list_head active; 187 struct list_head queued; 188 189 wait_queue_head_t wq; 190 191 /* Counters to control buffer fill */ 192 int pos; 193 }; 194 195 struct au0828_dev { 196 struct mutex mutex; 197 struct usb_device *usbdev; 198 int boardnr; 199 struct au0828_board board; 200 u8 ctrlmsg[64]; 201 202 /* I2C */ 203 struct i2c_adapter i2c_adap; 204 struct i2c_algorithm i2c_algo; 205 struct i2c_client i2c_client; 206 u32 i2c_rc; 207 208 /* Digital */ 209 struct au0828_dvb dvb; 210 struct work_struct restart_streaming; 211 212 #ifdef CONFIG_VIDEO_AU0828_V4L2 213 /* Analog */ 214 struct v4l2_device v4l2_dev; 215 struct v4l2_ctrl_handler v4l2_ctrl_hdl; 216 #endif 217 #ifdef CONFIG_VIDEO_AU0828_RC 218 struct au0828_rc *ir; 219 #endif 220 221 int users; 222 unsigned int resources; /* resources in use */ 223 struct video_device *vdev; 224 struct video_device *vbi_dev; 225 struct timer_list vid_timeout; 226 int vid_timeout_running; 227 struct timer_list vbi_timeout; 228 int vbi_timeout_running; 229 int width; 230 int height; 231 int vbi_width; 232 int vbi_height; 233 u32 vbi_read; 234 v4l2_std_id std; 235 u32 field_size; 236 u32 frame_size; 237 u32 bytesperline; 238 int type; 239 u8 ctrl_ainput; 240 __u8 isoc_in_endpointaddr; 241 u8 isoc_init_ok; 242 int greenscreen_detected; 243 unsigned int frame_count; 244 int ctrl_freq; 245 int input_type; 246 int std_set_in_tuner_core; 247 unsigned int ctrl_input; 248 enum au0828_dev_state 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 /* USB / URB Related */ 270 int urb_streaming; 271 struct urb *urbs[URB_COUNT]; 272 273 /* Preallocated transfer digital transfer buffers */ 274 275 char *dig_transfer_buffer[URB_COUNT]; 276 }; 277 278 /* ----------------------------------------------------------- */ 279 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 280 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 281 #define au0828_andor(dev, reg, mask, value) \ 282 au0828_writereg(dev, reg, \ 283 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 284 285 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 286 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 287 288 /* ----------------------------------------------------------- */ 289 /* au0828-core.c */ 290 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 291 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 292 extern int au0828_debug; 293 294 /* ----------------------------------------------------------- */ 295 /* au0828-cards.c */ 296 extern struct au0828_board au0828_boards[]; 297 extern struct usb_device_id au0828_usb_id_table[]; 298 extern void au0828_gpio_setup(struct au0828_dev *dev); 299 extern int au0828_tuner_callback(void *priv, int component, 300 int command, int arg); 301 extern void au0828_card_setup(struct au0828_dev *dev); 302 303 /* ----------------------------------------------------------- */ 304 /* au0828-i2c.c */ 305 extern int au0828_i2c_register(struct au0828_dev *dev); 306 extern int au0828_i2c_unregister(struct au0828_dev *dev); 307 308 /* ----------------------------------------------------------- */ 309 /* au0828-video.c */ 310 int au0828_analog_register(struct au0828_dev *dev, 311 struct usb_interface *interface); 312 int au0828_analog_stream_disable(struct au0828_dev *d); 313 void au0828_analog_unregister(struct au0828_dev *dev); 314 315 /* ----------------------------------------------------------- */ 316 /* au0828-dvb.c */ 317 extern int au0828_dvb_register(struct au0828_dev *dev); 318 extern void au0828_dvb_unregister(struct au0828_dev *dev); 319 320 /* au0828-vbi.c */ 321 extern struct videobuf_queue_ops au0828_vbi_qops; 322 323 #define dprintk(level, fmt, arg...)\ 324 do { if (au0828_debug & level)\ 325 printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\ 326 } while (0) 327 328 /* au0828-input.c */ 329 int au0828_rc_register(struct au0828_dev *dev); 330 void au0828_rc_unregister(struct au0828_dev *dev); 331 int au0828_rc_suspend(struct au0828_dev *dev); 332 int au0828_rc_resume(struct au0828_dev *dev); 333