2 em28xx.h - driver for Empia EM2800/EM2820/2840 USB video capture devices
4 Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com>
5 Ludovico Cavedon <cavedon@sssup.it>
6 Mauro Carvalho Chehab <mchehab@infradead.org>
8 Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #include <linux/videodev2.h>
29 #include <media/videobuf-vmalloc.h>
31 #include <linux/i2c.h>
32 #include <linux/mutex.h>
33 #include <media/ir-kbd-i2c.h>
34 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
35 #include <media/videobuf-dvb.h>
37 #include "tuner-xc2028.h"
38 #include "em28xx-reg.h"
40 /* Boards supported by driver */
41 #define EM2800_BOARD_UNKNOWN 0
42 #define EM2820_BOARD_UNKNOWN 1
43 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
44 #define EM2820_BOARD_PINNACLE_USB_2 3
45 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
46 #define EM2820_BOARD_MSI_VOX_USB_2 5
47 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
48 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
49 #define EM2800_BOARD_KWORLD_USB2800 8
50 #define EM2820_BOARD_PINNACLE_DVC_90 9
51 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
52 #define EM2880_BOARD_TERRATEC_HYBRID_XS 11
53 #define EM2820_BOARD_KWORLD_PVRTV2800RF 12
54 #define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
55 #define EM2820_BOARD_PROLINK_PLAYTV_USB2 14
56 #define EM2800_BOARD_VGEAR_POCKETTV 15
57 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_950 16
58 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
59 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
60 #define EM2860_BOARD_POINTNIX_INTRAORAL_CAMERA 19
62 /* Limits minimum and default number of buffers */
63 #define EM28XX_MIN_BUF 4
64 #define EM28XX_DEF_BUF 8
66 /* maximum number of em28xx boards */
67 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
69 /* maximum number of frames that can be queued */
70 #define EM28XX_NUM_FRAMES 5
71 /* number of frames that get used for v4l2_read() */
72 #define EM28XX_NUM_READ_FRAMES 2
74 /* number of buffers for isoc transfers */
75 #define EM28XX_NUM_BUFS 5
77 /* number of packets for each buffer
78 windows requests only 40 packets .. so we better do the same
79 this is what I found out for all alternate numbers there!
81 #define EM28XX_NUM_PACKETS 40
83 /* default alternate; 0 means choose the best */
84 #define EM28XX_PINOUT 0
86 #define EM28XX_INTERLACED_DEFAULT 1
89 #define (use usbview if you want to get the other alternate number infos)
91 #define alternate number 2
92 #define Endpoint Address: 82
105 Max Packet Size: 3072
109 /* time to wait when stopping the isoc transfer */
110 #define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
112 /* time in msecs to wait for i2c writes to finish */
113 #define EM2800_I2C_WRITE_TIMEOUT 20
116 EM28XX_MODE_UNDEFINED,
121 enum em28xx_stream_state {
129 struct em28xx_usb_isoc_ctl {
130 /* max packet size of isoc transaction */
133 /* number of allocated urbs */
136 /* urb for isoc transfers */
139 /* transfer buffers for isoc transfer */
140 char **transfer_buffer;
142 /* Last buffer command and region */
144 int pos, size, pktsize;
146 /* Last field: ODD or EVEN? */
149 /* Stores incomplete commands */
153 /* Stores already requested buffers */
154 struct em28xx_buffer *buf;
156 /* Stores the number of received fields */
159 /* isoc urb callback */
160 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
166 u32 fourcc; /* v4l2 format id */
169 /* buffer for one video frame */
170 struct em28xx_buffer {
171 /* common v4l buffer stuff -- must be first */
172 struct videobuf_buffer vb;
174 struct list_head frame;
179 struct em28xx_dmaqueue {
180 struct list_head active;
181 struct list_head queued;
183 wait_queue_head_t wq;
185 /* Counters to control buffer fill */
190 enum em28xx_io_method {
198 #define MAX_EM28XX_INPUT 4
199 enum enum28xx_itype {
200 EM28XX_VMUX_COMPOSITE1 = 1,
201 EM28XX_VMUX_COMPOSITE2,
202 EM28XX_VMUX_COMPOSITE3,
203 EM28XX_VMUX_COMPOSITE4,
205 EM28XX_VMUX_TELEVISION,
215 EM28XX_AMUX_AC97_VIDEO,
216 EM28XX_AMUX_AC97_LINE_IN,
219 struct em28xx_input {
220 enum enum28xx_itype type;
222 enum em28xx_amux amux;
225 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
227 enum em28xx_decoder {
233 struct em28xx_reg_seq {
235 unsigned char val, mask;
239 struct em28xx_board {
245 unsigned int tda9887_conf;
247 unsigned int is_em2800:1;
248 unsigned int has_msp34xx:1;
249 unsigned int mts_firmware:1;
250 unsigned int has_12mhz_i2s:1;
251 unsigned int max_range_640_480:1;
252 unsigned int has_dvb:1;
253 unsigned int has_snapshot_button:1;
255 enum em28xx_decoder decoder;
257 struct em28xx_input input[MAX_EM28XX_INPUT];
258 struct em28xx_input radio;
261 struct em28xx_eeprom {
262 u32 id; /* 0x9567eb1a */
270 u16 string1, string2, string3;
276 enum em28xx_dev_state {
277 DEV_INITIALIZED = 0x01,
278 DEV_DISCONNECTED = 0x02,
279 DEV_MISCONFIGURED = 0x04,
282 #define EM28XX_AUDIO_BUFS 5
283 #define EM28XX_NUM_AUDIO_PACKETS 64
284 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
285 #define EM28XX_CAPTURE_STREAM_EN 1
287 /* em28xx extensions */
288 #define EM28XX_AUDIO 0x10
289 #define EM28XX_DVB 0x20
291 struct em28xx_audio {
293 char *transfer_buffer[EM28XX_AUDIO_BUFS];
294 struct urb *urb[EM28XX_AUDIO_BUFS];
295 struct usb_device *udev;
296 unsigned int capture_transfer_done;
297 struct snd_pcm_substream *capture_pcm_substream;
299 unsigned int hwptr_done_capture;
300 struct snd_card *sndcard;
303 enum em28xx_stream_state capture_stream;
311 unsigned int stream_on:1; /* Locks streams */
314 struct videobuf_queue vb_vidq;
316 enum v4l2_buf_type type;
319 /* main device struct */
321 /* generic device properties */
322 char name[30]; /* name (including minor) of the device */
323 int model; /* index in the device_data struct */
324 int devno; /* marks the number of this device */
325 unsigned int is_em2800:1;
326 unsigned int has_msp34xx:1;
327 unsigned int has_tda9887:1;
328 unsigned int stream_on:1; /* Locks streams */
329 unsigned int has_audio_class:1;
330 unsigned int has_12mhz_i2s:1;
331 unsigned int max_range_640_480:1;
332 unsigned int has_dvb:1;
333 unsigned int has_snapshot_button:1;
335 /* Some older em28xx chips needs a waiting time after writing */
336 unsigned int wait_after_write;
338 /* GPIO sequences for analog and digital mode */
339 struct em28xx_reg_seq *analog_gpio, *digital_gpio;
341 /* GPIO sequences for tuner callbacks */
342 struct em28xx_reg_seq *tun_analog_gpio, *tun_digital_gpio;
344 int video_inputs; /* number of video inputs */
345 struct list_head devlist;
347 u32 i2s_speed; /* I2S speed for audio digital stream */
349 enum em28xx_decoder decoder;
351 int tuner_type; /* type of the tuner */
352 int tuner_addr; /* tuner address */
355 struct i2c_adapter i2c_adap;
356 struct i2c_client i2c_client;
357 /* video for linux */
358 int users; /* user count for exclusive use */
359 struct video_device *vdev; /* video for linux device struct */
360 v4l2_std_id norm; /* selected tv norm */
361 int ctl_freq; /* selected frequency */
362 unsigned int ctl_input; /* selected input */
363 unsigned int ctl_ainput; /* slected audio input */
366 /* frame properties */
367 int width; /* current frame width */
368 int height; /* current frame height */
369 int hscale; /* horizontal scale factor (see datasheet) */
370 int vscale; /* vertical scale factor (see datasheet) */
371 int interlaced; /* 1=interlace fileds, 0=just top fileds */
372 unsigned int video_bytesread; /* Number of bytes read */
374 unsigned long hash; /* eeprom hash - for boards with generic ID */
375 unsigned long i2c_hash; /* i2c devicelist hash -
376 for boards with generic ID */
378 struct em28xx_audio *adev;
381 enum em28xx_dev_state state;
382 enum em28xx_io_method io;
384 struct work_struct request_module_wk;
388 /* spinlock_t queue_lock; */
389 struct list_head inqueue, outqueue;
390 wait_queue_head_t open, wait_frame, wait_stream;
391 struct video_device *vbi_dev;
392 struct video_device *radio_dev;
394 unsigned char eedata[256];
396 /* Isoc control struct */
397 struct em28xx_dmaqueue vidq;
398 struct em28xx_usb_isoc_ctl isoc_ctl;
402 struct usb_device *udev; /* the usb device */
403 int alt; /* alternate */
404 int max_pkt_size; /* max packet size of isoc transaction */
405 int num_alt; /* Number of alternative settings */
406 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
407 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
408 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
409 /* helper funcs that call usb_control_msg */
410 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
412 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
413 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
415 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
417 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
419 enum em28xx_mode mode;
421 /* Caches GPO and GPIO registers */
422 unsigned char reg_gpo, reg_gpio;
424 /* Snapshot button */
425 char snapshot_button_path[30]; /* path of the input dev */
426 struct input_dev *sbutton_input_dev;
427 struct delayed_work sbutton_query_work;
429 struct em28xx_dvb *dvb;
433 struct list_head next;
436 int (*init)(struct em28xx *);
437 int (*fini)(struct em28xx *);
440 /* Provided by em28xx-i2c.c */
442 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
443 void em28xx_do_i2c_scan(struct em28xx *dev);
444 int em28xx_i2c_register(struct em28xx *dev);
445 int em28xx_i2c_unregister(struct em28xx *dev);
447 /* Provided by em28xx-core.c */
449 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
450 void em28xx_queue_unusedframes(struct em28xx *dev);
451 void em28xx_release_buffers(struct em28xx *dev);
453 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
455 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
456 int em28xx_read_reg(struct em28xx *dev, u16 reg);
457 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
459 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
460 int em28xx_audio_analog_set(struct em28xx *dev);
462 int em28xx_colorlevels_set_default(struct em28xx *dev);
463 int em28xx_capture_start(struct em28xx *dev, int start);
464 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
465 int em28xx_resolution_set(struct em28xx *dev);
466 int em28xx_set_alternate(struct em28xx *dev);
467 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
468 int num_bufs, int max_pkt_size,
469 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
470 void em28xx_uninit_isoc(struct em28xx *dev);
471 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
472 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
474 /* Provided by em28xx-video.c */
475 int em28xx_register_extension(struct em28xx_ops *dev);
476 void em28xx_unregister_extension(struct em28xx_ops *dev);
478 /* Provided by em28xx-cards.c */
479 extern int em2800_variant_detect(struct usb_device *udev, int model);
480 extern void em28xx_pre_card_setup(struct em28xx *dev);
481 extern void em28xx_card_setup(struct em28xx *dev);
482 extern struct em28xx_board em28xx_boards[];
483 extern struct usb_device_id em28xx_id_table[];
484 extern const unsigned int em28xx_bcount;
485 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
486 int em28xx_tuner_callback(void *ptr, int command, int arg);
488 /* Provided by em28xx-input.c */
489 /* TODO: Check if the standard get_key handlers on ir-common can be used */
490 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
491 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
492 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
494 void em28xx_register_snapshot_button(struct em28xx *dev);
495 void em28xx_deregister_snapshot_button(struct em28xx *dev);
499 #define em28xx_err(fmt, arg...) do {\
500 printk(KERN_ERR fmt , ##arg); } while (0)
502 #define em28xx_errdev(fmt, arg...) do {\
503 printk(KERN_ERR "%s: "fmt,\
504 dev->name , ##arg); } while (0)
506 #define em28xx_info(fmt, arg...) do {\
507 printk(KERN_INFO "%s: "fmt,\
508 dev->name , ##arg); } while (0)
509 #define em28xx_warn(fmt, arg...) do {\
510 printk(KERN_WARNING "%s: "fmt,\
511 dev->name , ##arg); } while (0)
513 static inline int em28xx_compression_disable(struct em28xx *dev)
515 /* side effect of disabling scaler and mixer */
516 return em28xx_write_regs(dev, EM28XX_R26_COMPR, "\x00", 1);
519 static inline int em28xx_contrast_get(struct em28xx *dev)
521 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
524 static inline int em28xx_brightness_get(struct em28xx *dev)
526 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
529 static inline int em28xx_saturation_get(struct em28xx *dev)
531 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
534 static inline int em28xx_u_balance_get(struct em28xx *dev)
536 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
539 static inline int em28xx_v_balance_get(struct em28xx *dev)
541 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
544 static inline int em28xx_gamma_get(struct em28xx *dev)
546 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
549 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
552 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
555 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
558 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
561 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
564 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
567 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
570 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
573 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
576 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
579 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
582 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
585 /*FIXME: maxw should be dependent of alt mode */
586 static inline unsigned int norm_maxw(struct em28xx *dev)
588 if (dev->max_range_640_480)
594 static inline unsigned int norm_maxh(struct em28xx *dev)
596 if (dev->max_range_640_480)
599 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;