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 struct au0828_input input[AU0828_MAX_INPUT]; 92 93 }; 94 95 struct au0828_dvb { 96 struct mutex lock; 97 struct dvb_adapter adapter; 98 struct dvb_frontend *frontend; 99 struct dvb_demux demux; 100 struct dmxdev dmxdev; 101 struct dmx_frontend fe_hw; 102 struct dmx_frontend fe_mem; 103 struct dvb_net net; 104 int feeding; 105 int start_count; 106 int stop_count; 107 108 int (*set_frontend)(struct dvb_frontend *fe); 109 }; 110 111 enum au0828_stream_state { 112 STREAM_OFF, 113 STREAM_INTERRUPT, 114 STREAM_ON 115 }; 116 117 #define AUVI_INPUT(nr) (dev->board.input[nr]) 118 119 /* device state */ 120 enum au0828_dev_state { 121 DEV_INITIALIZED = 0x01, 122 DEV_DISCONNECTED = 0x02, 123 DEV_MISCONFIGURED = 0x04 124 }; 125 126 struct au0828_fh { 127 /* must be the first field of this struct! */ 128 struct v4l2_fh fh; 129 130 struct au0828_dev *dev; 131 unsigned int resources; 132 133 struct videobuf_queue vb_vidq; 134 struct videobuf_queue vb_vbiq; 135 enum v4l2_buf_type type; 136 }; 137 138 struct au0828_usb_isoc_ctl { 139 /* max packet size of isoc transaction */ 140 int max_pkt_size; 141 142 /* number of allocated urbs */ 143 int num_bufs; 144 145 /* urb for isoc transfers */ 146 struct urb **urb; 147 148 /* transfer buffers for isoc transfer */ 149 char **transfer_buffer; 150 151 /* Last buffer command and region */ 152 u8 cmd; 153 int pos, size, pktsize; 154 155 /* Last field: ODD or EVEN? */ 156 int field; 157 158 /* Stores incomplete commands */ 159 u32 tmp_buf; 160 int tmp_buf_len; 161 162 /* Stores already requested buffers */ 163 struct au0828_buffer *buf; 164 struct au0828_buffer *vbi_buf; 165 166 /* Stores the number of received fields */ 167 int nfields; 168 169 /* isoc urb callback */ 170 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 171 172 }; 173 174 /* buffer for one video frame */ 175 struct au0828_buffer { 176 /* common v4l buffer stuff -- must be first */ 177 struct videobuf_buffer vb; 178 179 struct list_head frame; 180 int top_field; 181 int receiving; 182 }; 183 184 struct au0828_dmaqueue { 185 struct list_head active; 186 struct list_head queued; 187 188 wait_queue_head_t wq; 189 190 /* Counters to control buffer fill */ 191 int pos; 192 }; 193 194 struct au0828_dev { 195 struct mutex mutex; 196 struct usb_device *usbdev; 197 int boardnr; 198 struct au0828_board board; 199 u8 ctrlmsg[64]; 200 201 /* I2C */ 202 struct i2c_adapter i2c_adap; 203 struct i2c_algorithm i2c_algo; 204 struct i2c_client i2c_client; 205 u32 i2c_rc; 206 207 /* Digital */ 208 struct au0828_dvb dvb; 209 struct work_struct restart_streaming; 210 211 #ifdef CONFIG_VIDEO_AU0828_V4L2 212 /* Analog */ 213 struct v4l2_device v4l2_dev; 214 struct v4l2_ctrl_handler v4l2_ctrl_hdl; 215 #endif 216 int users; 217 unsigned int resources; /* resources in use */ 218 struct video_device *vdev; 219 struct video_device *vbi_dev; 220 struct timer_list vid_timeout; 221 int vid_timeout_running; 222 struct timer_list vbi_timeout; 223 int vbi_timeout_running; 224 int width; 225 int height; 226 int vbi_width; 227 int vbi_height; 228 u32 vbi_read; 229 v4l2_std_id std; 230 u32 field_size; 231 u32 frame_size; 232 u32 bytesperline; 233 int type; 234 u8 ctrl_ainput; 235 __u8 isoc_in_endpointaddr; 236 u8 isoc_init_ok; 237 int greenscreen_detected; 238 unsigned int frame_count; 239 int ctrl_freq; 240 int input_type; 241 int std_set_in_tuner_core; 242 unsigned int ctrl_input; 243 enum au0828_dev_state dev_state; 244 enum au0828_stream_state stream_state; 245 wait_queue_head_t open; 246 247 struct mutex lock; 248 249 /* Isoc control struct */ 250 struct au0828_dmaqueue vidq; 251 struct au0828_dmaqueue vbiq; 252 struct au0828_usb_isoc_ctl isoc_ctl; 253 spinlock_t slock; 254 255 /* usb transfer */ 256 int alt; /* alternate */ 257 int max_pkt_size; /* max packet size of isoc transaction */ 258 int num_alt; /* Number of alternative settings */ 259 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ 260 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */ 261 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc 262 transfer */ 263 264 /* USB / URB Related */ 265 int urb_streaming; 266 struct urb *urbs[URB_COUNT]; 267 268 /* Preallocated transfer digital transfer buffers */ 269 270 char *dig_transfer_buffer[URB_COUNT]; 271 }; 272 273 /* ----------------------------------------------------------- */ 274 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 275 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 276 #define au0828_andor(dev, reg, mask, value) \ 277 au0828_writereg(dev, reg, \ 278 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 279 280 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 281 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 282 283 /* ----------------------------------------------------------- */ 284 /* au0828-core.c */ 285 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 286 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 287 extern int au0828_debug; 288 289 /* ----------------------------------------------------------- */ 290 /* au0828-cards.c */ 291 extern struct au0828_board au0828_boards[]; 292 extern struct usb_device_id au0828_usb_id_table[]; 293 extern void au0828_gpio_setup(struct au0828_dev *dev); 294 extern int au0828_tuner_callback(void *priv, int component, 295 int command, int arg); 296 extern void au0828_card_setup(struct au0828_dev *dev); 297 298 /* ----------------------------------------------------------- */ 299 /* au0828-i2c.c */ 300 extern int au0828_i2c_register(struct au0828_dev *dev); 301 extern int au0828_i2c_unregister(struct au0828_dev *dev); 302 303 /* ----------------------------------------------------------- */ 304 /* au0828-video.c */ 305 int au0828_analog_register(struct au0828_dev *dev, 306 struct usb_interface *interface); 307 int au0828_analog_stream_disable(struct au0828_dev *d); 308 void au0828_analog_unregister(struct au0828_dev *dev); 309 310 /* ----------------------------------------------------------- */ 311 /* au0828-dvb.c */ 312 extern int au0828_dvb_register(struct au0828_dev *dev); 313 extern void au0828_dvb_unregister(struct au0828_dev *dev); 314 315 /* au0828-vbi.c */ 316 extern struct videobuf_queue_ops au0828_vbi_qops; 317 318 #define dprintk(level, fmt, arg...)\ 319 do { if (au0828_debug & level)\ 320 printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\ 321 } while (0) 322