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
60 /* Limits minimum and default number of buffers */
61 #define EM28XX_MIN_BUF 4
62 #define EM28XX_DEF_BUF 8
64 /* maximum number of em28xx boards */
65 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
67 /* maximum number of frames that can be queued */
68 #define EM28XX_NUM_FRAMES 5
69 /* number of frames that get used for v4l2_read() */
70 #define EM28XX_NUM_READ_FRAMES 2
72 /* number of buffers for isoc transfers */
73 #define EM28XX_NUM_BUFS 5
75 /* number of packets for each buffer
76 windows requests only 40 packets .. so we better do the same
77 this is what I found out for all alternate numbers there!
79 #define EM28XX_NUM_PACKETS 40
81 /* default alternate; 0 means choose the best */
82 #define EM28XX_PINOUT 0
84 #define EM28XX_INTERLACED_DEFAULT 1
87 #define (use usbview if you want to get the other alternate number infos)
89 #define alternate number 2
90 #define Endpoint Address: 82
103 Max Packet Size: 3072
107 /* time to wait when stopping the isoc transfer */
108 #define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
110 /* time in msecs to wait for i2c writes to finish */
111 #define EM2800_I2C_WRITE_TIMEOUT 20
114 EM28XX_MODE_UNDEFINED,
119 enum em28xx_stream_state {
127 struct em28xx_usb_isoc_ctl {
128 /* max packet size of isoc transaction */
131 /* number of allocated urbs */
134 /* urb for isoc transfers */
137 /* transfer buffers for isoc transfer */
138 char **transfer_buffer;
140 /* Last buffer command and region */
142 int pos, size, pktsize;
144 /* Last field: ODD or EVEN? */
147 /* Stores incomplete commands */
151 /* Stores already requested buffers */
152 struct em28xx_buffer *buf;
154 /* Stores the number of received fields */
157 /* isoc urb callback */
158 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
164 u32 fourcc; /* v4l2 format id */
167 /* buffer for one video frame */
168 struct em28xx_buffer {
169 /* common v4l buffer stuff -- must be first */
170 struct videobuf_buffer vb;
172 struct list_head frame;
177 struct em28xx_dmaqueue {
178 struct list_head active;
179 struct list_head queued;
181 wait_queue_head_t wq;
183 /* Counters to control buffer fill */
188 enum em28xx_io_method {
196 #define MAX_EM28XX_INPUT 4
197 enum enum28xx_itype {
198 EM28XX_VMUX_COMPOSITE1 = 1,
199 EM28XX_VMUX_COMPOSITE2,
200 EM28XX_VMUX_COMPOSITE3,
201 EM28XX_VMUX_COMPOSITE4,
203 EM28XX_VMUX_TELEVISION,
213 EM28XX_AMUX_AC97_VIDEO,
214 EM28XX_AMUX_AC97_LINE_IN,
217 struct em28xx_input {
218 enum enum28xx_itype type;
220 enum em28xx_amux amux;
223 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
225 enum em28xx_decoder {
231 struct em28xx_reg_seq {
233 unsigned char val, mask;
237 struct em28xx_board {
243 unsigned int tda9887_conf;
245 unsigned int is_em2800:1;
246 unsigned int has_msp34xx:1;
247 unsigned int mts_firmware:1;
248 unsigned int has_12mhz_i2s:1;
249 unsigned int max_range_640_480:1;
250 unsigned int has_dvb:1;
252 enum em28xx_decoder decoder;
254 struct em28xx_input input[MAX_EM28XX_INPUT];
255 struct em28xx_input radio;
258 struct em28xx_eeprom {
259 u32 id; /* 0x9567eb1a */
267 u16 string1, string2, string3;
273 enum em28xx_dev_state {
274 DEV_INITIALIZED = 0x01,
275 DEV_DISCONNECTED = 0x02,
276 DEV_MISCONFIGURED = 0x04,
279 #define EM28XX_AUDIO_BUFS 5
280 #define EM28XX_NUM_AUDIO_PACKETS 64
281 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
282 #define EM28XX_CAPTURE_STREAM_EN 1
284 /* em28xx extensions */
285 #define EM28XX_AUDIO 0x10
286 #define EM28XX_DVB 0x20
288 struct em28xx_audio {
290 char *transfer_buffer[EM28XX_AUDIO_BUFS];
291 struct urb *urb[EM28XX_AUDIO_BUFS];
292 struct usb_device *udev;
293 unsigned int capture_transfer_done;
294 struct snd_pcm_substream *capture_pcm_substream;
296 unsigned int hwptr_done_capture;
297 struct snd_card *sndcard;
300 enum em28xx_stream_state capture_stream;
308 unsigned int stream_on:1; /* Locks streams */
311 struct videobuf_queue vb_vidq;
313 enum v4l2_buf_type type;
316 /* main device struct */
318 /* generic device properties */
319 char name[30]; /* name (including minor) of the device */
320 int model; /* index in the device_data struct */
321 int devno; /* marks the number of this device */
322 unsigned int is_em2800:1;
323 unsigned int has_msp34xx:1;
324 unsigned int has_tda9887:1;
325 unsigned int stream_on:1; /* Locks streams */
326 unsigned int has_audio_class:1;
327 unsigned int has_12mhz_i2s:1;
328 unsigned int max_range_640_480:1;
329 unsigned int has_dvb:1;
331 /* Some older em28xx chips needs a waiting time after writing */
332 unsigned int wait_after_write;
334 /* GPIO sequences for analog and digital mode */
335 struct em28xx_reg_seq *analog_gpio, *digital_gpio;
337 /* GPIO sequences for tuner callbacks */
338 struct em28xx_reg_seq *tun_analog_gpio, *tun_digital_gpio;
340 int video_inputs; /* number of video inputs */
341 struct list_head devlist;
343 u32 i2s_speed; /* I2S speed for audio digital stream */
345 enum em28xx_decoder decoder;
347 int tuner_type; /* type of the tuner */
348 int tuner_addr; /* tuner address */
351 struct i2c_adapter i2c_adap;
352 struct i2c_client i2c_client;
353 /* video for linux */
354 int users; /* user count for exclusive use */
355 struct video_device *vdev; /* video for linux device struct */
356 v4l2_std_id norm; /* selected tv norm */
357 int ctl_freq; /* selected frequency */
358 unsigned int ctl_input; /* selected input */
359 unsigned int ctl_ainput; /* slected audio input */
362 /* frame properties */
363 int width; /* current frame width */
364 int height; /* current frame height */
365 int hscale; /* horizontal scale factor (see datasheet) */
366 int vscale; /* vertical scale factor (see datasheet) */
367 int interlaced; /* 1=interlace fileds, 0=just top fileds */
368 unsigned int video_bytesread; /* Number of bytes read */
370 unsigned long hash; /* eeprom hash - for boards with generic ID */
371 unsigned long i2c_hash; /* i2c devicelist hash -
372 for boards with generic ID */
374 struct em28xx_audio *adev;
377 enum em28xx_dev_state state;
378 enum em28xx_io_method io;
380 struct work_struct request_module_wk;
384 /* spinlock_t queue_lock; */
385 struct list_head inqueue, outqueue;
386 wait_queue_head_t open, wait_frame, wait_stream;
387 struct video_device *vbi_dev;
388 struct video_device *radio_dev;
390 unsigned char eedata[256];
392 /* Isoc control struct */
393 struct em28xx_dmaqueue vidq;
394 struct em28xx_usb_isoc_ctl isoc_ctl;
398 struct usb_device *udev; /* the usb device */
399 int alt; /* alternate */
400 int max_pkt_size; /* max packet size of isoc transaction */
401 int num_alt; /* Number of alternative settings */
402 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
403 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
404 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
405 /* helper funcs that call usb_control_msg */
406 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
408 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
409 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
411 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
413 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
415 enum em28xx_mode mode;
417 /* Caches GPO and GPIO registers */
418 unsigned char reg_gpo, reg_gpio;
420 struct em28xx_dvb *dvb;
424 struct list_head next;
427 int (*init)(struct em28xx *);
428 int (*fini)(struct em28xx *);
431 /* Provided by em28xx-i2c.c */
433 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
434 void em28xx_do_i2c_scan(struct em28xx *dev);
435 int em28xx_i2c_register(struct em28xx *dev);
436 int em28xx_i2c_unregister(struct em28xx *dev);
438 /* Provided by em28xx-core.c */
440 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
441 void em28xx_queue_unusedframes(struct em28xx *dev);
442 void em28xx_release_buffers(struct em28xx *dev);
444 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
446 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
447 int em28xx_read_reg(struct em28xx *dev, u16 reg);
448 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
450 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
451 int em28xx_audio_analog_set(struct em28xx *dev);
453 int em28xx_colorlevels_set_default(struct em28xx *dev);
454 int em28xx_capture_start(struct em28xx *dev, int start);
455 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
456 int em28xx_resolution_set(struct em28xx *dev);
457 int em28xx_set_alternate(struct em28xx *dev);
458 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
459 int num_bufs, int max_pkt_size,
460 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
461 void em28xx_uninit_isoc(struct em28xx *dev);
462 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
463 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
465 /* Provided by em28xx-video.c */
466 int em28xx_register_extension(struct em28xx_ops *dev);
467 void em28xx_unregister_extension(struct em28xx_ops *dev);
469 /* Provided by em28xx-cards.c */
470 extern int em2800_variant_detect(struct usb_device *udev, int model);
471 extern void em28xx_pre_card_setup(struct em28xx *dev);
472 extern void em28xx_card_setup(struct em28xx *dev);
473 extern struct em28xx_board em28xx_boards[];
474 extern struct usb_device_id em28xx_id_table[];
475 extern const unsigned int em28xx_bcount;
476 void em28xx_set_ir(struct em28xx *dev, struct IR_i2c *ir);
477 int em28xx_tuner_callback(void *ptr, int command, int arg);
479 /* Provided by em28xx-input.c */
480 /* TODO: Check if the standard get_key handlers on ir-common can be used */
481 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
482 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
483 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
488 #define em28xx_err(fmt, arg...) do {\
489 printk(KERN_ERR fmt , ##arg); } while (0)
491 #define em28xx_errdev(fmt, arg...) do {\
492 printk(KERN_ERR "%s: "fmt,\
493 dev->name , ##arg); } while (0)
495 #define em28xx_info(fmt, arg...) do {\
496 printk(KERN_INFO "%s: "fmt,\
497 dev->name , ##arg); } while (0)
498 #define em28xx_warn(fmt, arg...) do {\
499 printk(KERN_WARNING "%s: "fmt,\
500 dev->name , ##arg); } while (0)
502 static inline int em28xx_compression_disable(struct em28xx *dev)
504 /* side effect of disabling scaler and mixer */
505 return em28xx_write_regs(dev, EM28XX_R26_COMPR, "\x00", 1);
508 static inline int em28xx_contrast_get(struct em28xx *dev)
510 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
513 static inline int em28xx_brightness_get(struct em28xx *dev)
515 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
518 static inline int em28xx_saturation_get(struct em28xx *dev)
520 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
523 static inline int em28xx_u_balance_get(struct em28xx *dev)
525 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
528 static inline int em28xx_v_balance_get(struct em28xx *dev)
530 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
533 static inline int em28xx_gamma_get(struct em28xx *dev)
535 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
538 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
541 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
544 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
547 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
550 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
553 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
556 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
559 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
562 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
565 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
568 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
571 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
574 /*FIXME: maxw should be dependent of alt mode */
575 static inline unsigned int norm_maxw(struct em28xx *dev)
577 if (dev->max_range_640_480)
583 static inline unsigned int norm_maxh(struct em28xx *dev)
585 if (dev->max_range_640_480)
588 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;