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
61 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
62 #define EM2800_BOARD_GRABBEEX_USB2800 21
64 /* Limits minimum and default number of buffers */
65 #define EM28XX_MIN_BUF 4
66 #define EM28XX_DEF_BUF 8
68 /* maximum number of em28xx boards */
69 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
71 /* maximum number of frames that can be queued */
72 #define EM28XX_NUM_FRAMES 5
73 /* number of frames that get used for v4l2_read() */
74 #define EM28XX_NUM_READ_FRAMES 2
76 /* number of buffers for isoc transfers */
77 #define EM28XX_NUM_BUFS 5
79 /* number of packets for each buffer
80 windows requests only 40 packets .. so we better do the same
81 this is what I found out for all alternate numbers there!
83 #define EM28XX_NUM_PACKETS 40
85 /* default alternate; 0 means choose the best */
86 #define EM28XX_PINOUT 0
88 #define EM28XX_INTERLACED_DEFAULT 1
91 #define (use usbview if you want to get the other alternate number infos)
93 #define alternate number 2
94 #define Endpoint Address: 82
107 Max Packet Size: 3072
111 /* time to wait when stopping the isoc transfer */
112 #define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
114 /* time in msecs to wait for i2c writes to finish */
115 #define EM2800_I2C_WRITE_TIMEOUT 20
118 EM28XX_MODE_UNDEFINED,
123 enum em28xx_stream_state {
131 struct em28xx_usb_isoc_ctl {
132 /* max packet size of isoc transaction */
135 /* number of allocated urbs */
138 /* urb for isoc transfers */
141 /* transfer buffers for isoc transfer */
142 char **transfer_buffer;
144 /* Last buffer command and region */
146 int pos, size, pktsize;
148 /* Last field: ODD or EVEN? */
151 /* Stores incomplete commands */
155 /* Stores already requested buffers */
156 struct em28xx_buffer *buf;
158 /* Stores the number of received fields */
161 /* isoc urb callback */
162 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
168 u32 fourcc; /* v4l2 format id */
171 /* buffer for one video frame */
172 struct em28xx_buffer {
173 /* common v4l buffer stuff -- must be first */
174 struct videobuf_buffer vb;
176 struct list_head frame;
181 struct em28xx_dmaqueue {
182 struct list_head active;
183 struct list_head queued;
185 wait_queue_head_t wq;
187 /* Counters to control buffer fill */
192 enum em28xx_io_method {
200 #define MAX_EM28XX_INPUT 4
201 enum enum28xx_itype {
202 EM28XX_VMUX_COMPOSITE1 = 1,
203 EM28XX_VMUX_COMPOSITE2,
204 EM28XX_VMUX_COMPOSITE3,
205 EM28XX_VMUX_COMPOSITE4,
207 EM28XX_VMUX_TELEVISION,
217 EM28XX_AMUX_AC97_VIDEO,
218 EM28XX_AMUX_AC97_LINE_IN,
221 struct em28xx_input {
222 enum enum28xx_itype type;
224 enum em28xx_amux amux;
227 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
229 enum em28xx_decoder {
235 struct em28xx_reg_seq {
237 unsigned char val, mask;
241 struct em28xx_board {
247 unsigned int tda9887_conf;
249 unsigned int is_em2800:1;
250 unsigned int has_msp34xx:1;
251 unsigned int mts_firmware:1;
252 unsigned int has_12mhz_i2s:1;
253 unsigned int max_range_640_480:1;
254 unsigned int has_dvb:1;
255 unsigned int has_snapshot_button:1;
257 enum em28xx_decoder decoder;
259 struct em28xx_input input[MAX_EM28XX_INPUT];
260 struct em28xx_input radio;
263 struct em28xx_eeprom {
264 u32 id; /* 0x9567eb1a */
272 u16 string1, string2, string3;
278 enum em28xx_dev_state {
279 DEV_INITIALIZED = 0x01,
280 DEV_DISCONNECTED = 0x02,
281 DEV_MISCONFIGURED = 0x04,
284 #define EM28XX_AUDIO_BUFS 5
285 #define EM28XX_NUM_AUDIO_PACKETS 64
286 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
287 #define EM28XX_CAPTURE_STREAM_EN 1
289 /* em28xx extensions */
290 #define EM28XX_AUDIO 0x10
291 #define EM28XX_DVB 0x20
293 struct em28xx_audio {
295 char *transfer_buffer[EM28XX_AUDIO_BUFS];
296 struct urb *urb[EM28XX_AUDIO_BUFS];
297 struct usb_device *udev;
298 unsigned int capture_transfer_done;
299 struct snd_pcm_substream *capture_pcm_substream;
301 unsigned int hwptr_done_capture;
302 struct snd_card *sndcard;
305 enum em28xx_stream_state capture_stream;
313 unsigned int stream_on:1; /* Locks streams */
316 struct videobuf_queue vb_vidq;
318 enum v4l2_buf_type type;
321 /* main device struct */
323 /* generic device properties */
324 char name[30]; /* name (including minor) of the device */
325 int model; /* index in the device_data struct */
326 int devno; /* marks the number of this device */
327 unsigned int is_em2800:1;
328 unsigned int has_msp34xx:1;
329 unsigned int has_tda9887:1;
330 unsigned int stream_on:1; /* Locks streams */
331 unsigned int has_audio_class:1;
332 unsigned int has_12mhz_i2s:1;
333 unsigned int max_range_640_480:1;
334 unsigned int has_dvb:1;
335 unsigned int has_snapshot_button:1;
337 /* Some older em28xx chips needs a waiting time after writing */
338 unsigned int wait_after_write;
340 /* GPIO sequences for analog and digital mode */
341 struct em28xx_reg_seq *analog_gpio, *digital_gpio;
343 /* GPIO sequences for tuner callbacks */
344 struct em28xx_reg_seq *tun_analog_gpio, *tun_digital_gpio;
346 int video_inputs; /* number of video inputs */
347 struct list_head devlist;
349 u32 i2s_speed; /* I2S speed for audio digital stream */
351 enum em28xx_decoder decoder;
353 int tuner_type; /* type of the tuner */
354 int tuner_addr; /* tuner address */
357 struct i2c_adapter i2c_adap;
358 struct i2c_client i2c_client;
359 /* video for linux */
360 int users; /* user count for exclusive use */
361 struct video_device *vdev; /* video for linux device struct */
362 v4l2_std_id norm; /* selected tv norm */
363 int ctl_freq; /* selected frequency */
364 unsigned int ctl_input; /* selected input */
365 unsigned int ctl_ainput; /* slected audio input */
368 /* frame properties */
369 int width; /* current frame width */
370 int height; /* current frame height */
371 int hscale; /* horizontal scale factor (see datasheet) */
372 int vscale; /* vertical scale factor (see datasheet) */
373 int interlaced; /* 1=interlace fileds, 0=just top fileds */
374 unsigned int video_bytesread; /* Number of bytes read */
376 unsigned long hash; /* eeprom hash - for boards with generic ID */
377 unsigned long i2c_hash; /* i2c devicelist hash -
378 for boards with generic ID */
380 struct em28xx_audio *adev;
383 enum em28xx_dev_state state;
384 enum em28xx_io_method io;
386 struct work_struct request_module_wk;
390 /* spinlock_t queue_lock; */
391 struct list_head inqueue, outqueue;
392 wait_queue_head_t open, wait_frame, wait_stream;
393 struct video_device *vbi_dev;
394 struct video_device *radio_dev;
396 unsigned char eedata[256];
398 /* Isoc control struct */
399 struct em28xx_dmaqueue vidq;
400 struct em28xx_usb_isoc_ctl isoc_ctl;
404 struct usb_device *udev; /* the usb device */
405 int alt; /* alternate */
406 int max_pkt_size; /* max packet size of isoc transaction */
407 int num_alt; /* Number of alternative settings */
408 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
409 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
410 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
411 /* helper funcs that call usb_control_msg */
412 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
414 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
415 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
417 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
419 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
421 enum em28xx_mode mode;
423 /* Caches GPO and GPIO registers */
424 unsigned char reg_gpo, reg_gpio;
426 /* Snapshot button */
427 char snapshot_button_path[30]; /* path of the input dev */
428 struct input_dev *sbutton_input_dev;
429 struct delayed_work sbutton_query_work;
431 struct em28xx_dvb *dvb;
435 struct list_head next;
438 int (*init)(struct em28xx *);
439 int (*fini)(struct em28xx *);
442 /* Provided by em28xx-i2c.c */
444 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
445 void em28xx_do_i2c_scan(struct em28xx *dev);
446 int em28xx_i2c_register(struct em28xx *dev);
447 int em28xx_i2c_unregister(struct em28xx *dev);
449 /* Provided by em28xx-core.c */
451 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
452 void em28xx_queue_unusedframes(struct em28xx *dev);
453 void em28xx_release_buffers(struct em28xx *dev);
455 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
457 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
458 int em28xx_read_reg(struct em28xx *dev, u16 reg);
459 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
461 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
462 int em28xx_audio_analog_set(struct em28xx *dev);
464 int em28xx_colorlevels_set_default(struct em28xx *dev);
465 int em28xx_capture_start(struct em28xx *dev, int start);
466 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
467 int em28xx_resolution_set(struct em28xx *dev);
468 int em28xx_set_alternate(struct em28xx *dev);
469 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
470 int num_bufs, int max_pkt_size,
471 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
472 void em28xx_uninit_isoc(struct em28xx *dev);
473 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
474 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
476 /* Provided by em28xx-video.c */
477 int em28xx_register_extension(struct em28xx_ops *dev);
478 void em28xx_unregister_extension(struct em28xx_ops *dev);
480 /* Provided by em28xx-cards.c */
481 extern int em2800_variant_detect(struct usb_device *udev, int model);
482 extern void em28xx_pre_card_setup(struct em28xx *dev);
483 extern void em28xx_card_setup(struct em28xx *dev);
484 extern struct em28xx_board em28xx_boards[];
485 extern struct usb_device_id em28xx_id_table[];
486 extern const unsigned int em28xx_bcount;
487 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
488 int em28xx_tuner_callback(void *ptr, int command, int arg);
490 /* Provided by em28xx-input.c */
491 /* TODO: Check if the standard get_key handlers on ir-common can be used */
492 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
493 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
494 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
496 void em28xx_register_snapshot_button(struct em28xx *dev);
497 void em28xx_deregister_snapshot_button(struct em28xx *dev);
501 #define em28xx_err(fmt, arg...) do {\
502 printk(KERN_ERR fmt , ##arg); } while (0)
504 #define em28xx_errdev(fmt, arg...) do {\
505 printk(KERN_ERR "%s: "fmt,\
506 dev->name , ##arg); } while (0)
508 #define em28xx_info(fmt, arg...) do {\
509 printk(KERN_INFO "%s: "fmt,\
510 dev->name , ##arg); } while (0)
511 #define em28xx_warn(fmt, arg...) do {\
512 printk(KERN_WARNING "%s: "fmt,\
513 dev->name , ##arg); } while (0)
515 static inline int em28xx_compression_disable(struct em28xx *dev)
517 /* side effect of disabling scaler and mixer */
518 return em28xx_write_regs(dev, EM28XX_R26_COMPR, "\x00", 1);
521 static inline int em28xx_contrast_get(struct em28xx *dev)
523 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
526 static inline int em28xx_brightness_get(struct em28xx *dev)
528 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
531 static inline int em28xx_saturation_get(struct em28xx *dev)
533 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
536 static inline int em28xx_u_balance_get(struct em28xx *dev)
538 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
541 static inline int em28xx_v_balance_get(struct em28xx *dev)
543 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
546 static inline int em28xx_gamma_get(struct em28xx *dev)
548 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
551 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
554 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
557 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
560 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
563 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
566 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
569 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
572 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
575 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
578 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
581 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
584 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
587 /*FIXME: maxw should be dependent of alt mode */
588 static inline unsigned int norm_maxw(struct em28xx *dev)
590 if (dev->max_range_640_480)
596 static inline unsigned int norm_maxh(struct em28xx *dev)
598 if (dev->max_range_640_480)
601 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;