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 32 /* DVB */ 33 #include "demux.h" 34 #include "dmxdev.h" 35 #include "dvb_demux.h" 36 #include "dvb_frontend.h" 37 #include "dvb_net.h" 38 #include "dvbdev.h" 39 40 #include "au0828-reg.h" 41 #include "au0828-cards.h" 42 43 #define DRIVER_NAME "au0828" 44 #define URB_COUNT 16 45 #define URB_BUFSIZE (0xe522) 46 47 /* Analog constants */ 48 #define NTSC_STD_W 720 49 #define NTSC_STD_H 480 50 51 #define AU0828_INTERLACED_DEFAULT 1 52 #define V4L2_CID_PRIVATE_SHARPNESS (V4L2_CID_PRIVATE_BASE + 0) 53 54 /* Defination for AU0828 USB transfer */ 55 #define AU0828_MAX_ISO_BUFS 12 /* maybe resize this value in the future */ 56 #define AU0828_ISO_PACKETS_PER_URB 128 57 58 #define AU0828_MIN_BUF 4 59 #define AU0828_DEF_BUF 8 60 61 #define AU0828_MAX_INPUT 4 62 63 /* au0828 resource types (used for res_get/res_lock etc */ 64 #define AU0828_RESOURCE_VIDEO 0x01 65 #define AU0828_RESOURCE_VBI 0x02 66 67 enum au0828_itype { 68 AU0828_VMUX_UNDEFINED = 0, 69 AU0828_VMUX_COMPOSITE, 70 AU0828_VMUX_SVIDEO, 71 AU0828_VMUX_CABLE, 72 AU0828_VMUX_TELEVISION, 73 AU0828_VMUX_DVB, 74 AU0828_VMUX_DEBUG 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 struct au0828_input input[AU0828_MAX_INPUT]; 90 91 }; 92 93 struct au0828_dvb { 94 struct mutex lock; 95 struct dvb_adapter adapter; 96 struct dvb_frontend *frontend; 97 struct dvb_demux demux; 98 struct dmxdev dmxdev; 99 struct dmx_frontend fe_hw; 100 struct dmx_frontend fe_mem; 101 struct dvb_net net; 102 int feeding; 103 }; 104 105 enum au0828_stream_state { 106 STREAM_OFF, 107 STREAM_INTERRUPT, 108 STREAM_ON 109 }; 110 111 #define AUVI_INPUT(nr) (dev->board.input[nr]) 112 113 /* device state */ 114 enum au0828_dev_state { 115 DEV_INITIALIZED = 0x01, 116 DEV_DISCONNECTED = 0x02, 117 DEV_MISCONFIGURED = 0x04 118 }; 119 120 struct au0828_fh { 121 struct au0828_dev *dev; 122 unsigned int resources; 123 124 struct videobuf_queue vb_vidq; 125 struct videobuf_queue vb_vbiq; 126 enum v4l2_buf_type type; 127 }; 128 129 struct au0828_usb_isoc_ctl { 130 /* max packet size of isoc transaction */ 131 int max_pkt_size; 132 133 /* number of allocated urbs */ 134 int num_bufs; 135 136 /* urb for isoc transfers */ 137 struct urb **urb; 138 139 /* transfer buffers for isoc transfer */ 140 char **transfer_buffer; 141 142 /* Last buffer command and region */ 143 u8 cmd; 144 int pos, size, pktsize; 145 146 /* Last field: ODD or EVEN? */ 147 int field; 148 149 /* Stores incomplete commands */ 150 u32 tmp_buf; 151 int tmp_buf_len; 152 153 /* Stores already requested buffers */ 154 struct au0828_buffer *buf; 155 struct au0828_buffer *vbi_buf; 156 157 /* Stores the number of received fields */ 158 int nfields; 159 160 /* isoc urb callback */ 161 int (*isoc_copy) (struct au0828_dev *dev, struct urb *urb); 162 163 }; 164 165 /* buffer for one video frame */ 166 struct au0828_buffer { 167 /* common v4l buffer stuff -- must be first */ 168 struct videobuf_buffer vb; 169 170 struct list_head frame; 171 int top_field; 172 int receiving; 173 }; 174 175 struct au0828_dmaqueue { 176 struct list_head active; 177 struct list_head queued; 178 179 wait_queue_head_t wq; 180 181 /* Counters to control buffer fill */ 182 int pos; 183 }; 184 185 struct au0828_dev { 186 struct mutex mutex; 187 struct usb_device *usbdev; 188 int boardnr; 189 struct au0828_board board; 190 u8 ctrlmsg[64]; 191 192 /* I2C */ 193 struct i2c_adapter i2c_adap; 194 struct i2c_algorithm i2c_algo; 195 struct i2c_client i2c_client; 196 u32 i2c_rc; 197 198 /* Digital */ 199 struct au0828_dvb dvb; 200 struct work_struct restart_streaming; 201 202 /* Analog */ 203 struct v4l2_device v4l2_dev; 204 int users; 205 unsigned int resources; /* resources in use */ 206 struct video_device *vdev; 207 struct video_device *vbi_dev; 208 struct timer_list vid_timeout; 209 int vid_timeout_running; 210 struct timer_list vbi_timeout; 211 int vbi_timeout_running; 212 int width; 213 int height; 214 int vbi_width; 215 int vbi_height; 216 u32 vbi_read; 217 u32 field_size; 218 u32 frame_size; 219 u32 bytesperline; 220 int type; 221 u8 ctrl_ainput; 222 __u8 isoc_in_endpointaddr; 223 u8 isoc_init_ok; 224 int greenscreen_detected; 225 unsigned int frame_count; 226 int ctrl_freq; 227 int input_type; 228 int std_set_in_tuner_core; 229 unsigned int ctrl_input; 230 enum au0828_dev_state dev_state; 231 enum au0828_stream_state stream_state; 232 wait_queue_head_t open; 233 234 struct mutex lock; 235 236 /* Isoc control struct */ 237 struct au0828_dmaqueue vidq; 238 struct au0828_dmaqueue vbiq; 239 struct au0828_usb_isoc_ctl isoc_ctl; 240 spinlock_t slock; 241 242 /* usb transfer */ 243 int alt; /* alternate */ 244 int max_pkt_size; /* max packet size of isoc transaction */ 245 int num_alt; /* Number of alternative settings */ 246 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */ 247 struct urb *urb[AU0828_MAX_ISO_BUFS]; /* urb for isoc transfers */ 248 char *transfer_buffer[AU0828_MAX_ISO_BUFS];/* transfer buffers for isoc 249 transfer */ 250 251 /* USB / URB Related */ 252 int urb_streaming; 253 struct urb *urbs[URB_COUNT]; 254 }; 255 256 /* ----------------------------------------------------------- */ 257 #define au0828_read(dev, reg) au0828_readreg(dev, reg) 258 #define au0828_write(dev, reg, value) au0828_writereg(dev, reg, value) 259 #define au0828_andor(dev, reg, mask, value) \ 260 au0828_writereg(dev, reg, \ 261 (au0828_readreg(dev, reg) & ~(mask)) | ((value) & (mask))) 262 263 #define au0828_set(dev, reg, bit) au0828_andor(dev, (reg), (bit), (bit)) 264 #define au0828_clear(dev, reg, bit) au0828_andor(dev, (reg), (bit), 0) 265 266 /* ----------------------------------------------------------- */ 267 /* au0828-core.c */ 268 extern u32 au0828_read(struct au0828_dev *dev, u16 reg); 269 extern u32 au0828_write(struct au0828_dev *dev, u16 reg, u32 val); 270 extern int au0828_debug; 271 272 /* ----------------------------------------------------------- */ 273 /* au0828-cards.c */ 274 extern struct au0828_board au0828_boards[]; 275 extern struct usb_device_id au0828_usb_id_table[]; 276 extern void au0828_gpio_setup(struct au0828_dev *dev); 277 extern int au0828_tuner_callback(void *priv, int component, 278 int command, int arg); 279 extern void au0828_card_setup(struct au0828_dev *dev); 280 281 /* ----------------------------------------------------------- */ 282 /* au0828-i2c.c */ 283 extern int au0828_i2c_register(struct au0828_dev *dev); 284 extern int au0828_i2c_unregister(struct au0828_dev *dev); 285 286 /* ----------------------------------------------------------- */ 287 /* au0828-video.c */ 288 int au0828_analog_register(struct au0828_dev *dev, 289 struct usb_interface *interface); 290 int au0828_analog_stream_disable(struct au0828_dev *d); 291 void au0828_analog_unregister(struct au0828_dev *dev); 292 293 /* ----------------------------------------------------------- */ 294 /* au0828-dvb.c */ 295 extern int au0828_dvb_register(struct au0828_dev *dev); 296 extern void au0828_dvb_unregister(struct au0828_dev *dev); 297 298 /* au0828-vbi.c */ 299 extern struct videobuf_queue_ops au0828_vbi_qops; 300 301 #define dprintk(level, fmt, arg...)\ 302 do { if (au0828_debug & level)\ 303 printk(KERN_DEBUG DRIVER_NAME "/0: " fmt, ## arg);\ 304 } while (0) 305