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>
7 Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com>
9 Based on the em2800 driver from Sascha Sommer <saschasommer@freenet.de>
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define EM28XX_VERSION "0.2.1"
30 #define DRIVER_DESC "Empia em28xx device driver"
32 #include <linux/workqueue.h>
33 #include <linux/i2c.h>
34 #include <linux/mutex.h>
35 #include <linux/kref.h>
36 #include <linux/videodev2.h>
38 #include <media/videobuf2-vmalloc.h>
39 #include <media/v4l2-device.h>
40 #include <media/v4l2-ctrls.h>
41 #include <media/v4l2-fh.h>
42 #include <media/ir-kbd-i2c.h>
43 #include <media/rc-core.h>
44 #include "tuner-xc2028.h"
46 #include "em28xx-reg.h"
48 /* Boards supported by driver */
49 #define EM2800_BOARD_UNKNOWN 0
50 #define EM2820_BOARD_UNKNOWN 1
51 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
52 #define EM2820_BOARD_PINNACLE_USB_2 3
53 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
54 #define EM2820_BOARD_MSI_VOX_USB_2 5
55 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
56 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
57 #define EM2800_BOARD_KWORLD_USB2800 8
58 #define EM2820_BOARD_PINNACLE_DVC_90 9
59 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
60 #define EM2880_BOARD_TERRATEC_HYBRID_XS 11
61 #define EM2820_BOARD_KWORLD_PVRTV2800RF 12
62 #define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
63 #define EM2820_BOARD_PROLINK_PLAYTV_USB2 14
64 #define EM2800_BOARD_VGEAR_POCKETTV 15
65 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 16
66 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
67 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
68 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN 19
69 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
70 #define EM2800_BOARD_GRABBEEX_USB2800 21
71 #define EM2750_BOARD_UNKNOWN 22
72 #define EM2750_BOARD_DLCW_130 23
73 #define EM2820_BOARD_DLINK_USB_TV 24
74 #define EM2820_BOARD_GADMEI_UTV310 25
75 #define EM2820_BOARD_HERCULES_SMART_TV_USB2 26
76 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME 27
77 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
78 #define EM2860_BOARD_TVP5150_REFERENCE_DESIGN 29
79 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
80 #define EM2821_BOARD_USBGEAR_VD204 31
81 #define EM2821_BOARD_SUPERCOMP_USB_2 32
82 #define EM2860_BOARD_ELGATO_VIDEO_CAPTURE 33
83 #define EM2860_BOARD_TERRATEC_HYBRID_XS 34
84 #define EM2860_BOARD_TYPHOON_DVD_MAKER 35
85 #define EM2860_BOARD_NETGMBH_CAM 36
86 #define EM2860_BOARD_GADMEI_UTV330 37
87 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
88 #define EM2861_BOARD_KWORLD_PVRTV_300U 39
89 #define EM2861_BOARD_PLEXTOR_PX_TV100U 40
90 #define EM2870_BOARD_KWORLD_350U 41
91 #define EM2870_BOARD_KWORLD_355U 42
92 #define EM2870_BOARD_TERRATEC_XS 43
93 #define EM2870_BOARD_TERRATEC_XS_MT2060 44
94 #define EM2870_BOARD_PINNACLE_PCTV_DVB 45
95 #define EM2870_BOARD_COMPRO_VIDEOMATE 46
96 #define EM2880_BOARD_KWORLD_DVB_305U 47
97 #define EM2880_BOARD_KWORLD_DVB_310U 48
98 #define EM2880_BOARD_MSI_DIGIVOX_AD 49
99 #define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
100 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
101 #define EM2881_BOARD_DNT_DA2_HYBRID 52
102 #define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
103 #define EM2882_BOARD_KWORLD_VS_DVBT 54
104 #define EM2882_BOARD_TERRATEC_HYBRID_XS 55
105 #define EM2882_BOARD_PINNACLE_HYBRID_PRO_330E 56
106 #define EM2883_BOARD_KWORLD_HYBRID_330U 57
107 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
108 #define EM2874_BOARD_PCTV_HD_MINI_80E 59
109 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
110 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
111 #define EM2820_BOARD_GADMEI_TVR200 62
112 #define EM2860_BOARD_KAIOMY_TVNPC_U2 63
113 #define EM2860_BOARD_EASYCAP 64
114 #define EM2820_BOARD_IODATA_GVMVP_SZ 65
115 #define EM2880_BOARD_EMPIRE_DUAL_TV 66
116 #define EM2860_BOARD_TERRATEC_GRABBY 67
117 #define EM2860_BOARD_TERRATEC_AV350 68
118 #define EM2882_BOARD_KWORLD_ATSC_315U 69
119 #define EM2882_BOARD_EVGA_INDTUBE 70
120 #define EM2820_BOARD_SILVERCREST_WEBCAM 71
121 #define EM2861_BOARD_GADMEI_UTV330PLUS 72
122 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX 73
123 #define EM2800_BOARD_VC211A 74
124 #define EM2882_BOARD_DIKOM_DK300 75
125 #define EM2870_BOARD_KWORLD_A340 76
126 #define EM2874_BOARD_LEADERSHIP_ISDBT 77
127 #define EM28174_BOARD_PCTV_290E 78
128 #define EM2884_BOARD_TERRATEC_H5 79
129 #define EM28174_BOARD_PCTV_460E 80
130 #define EM2884_BOARD_HAUPPAUGE_WINTV_HVR_930C 81
131 #define EM2884_BOARD_CINERGY_HTC_STICK 82
132 #define EM2860_BOARD_HT_VIDBOX_NW03 83
133 #define EM2874_BOARD_MAXMEDIA_UB425_TC 84
134 #define EM2884_BOARD_PCTV_510E 85
135 #define EM2884_BOARD_PCTV_520E 86
136 #define EM2884_BOARD_TERRATEC_HTC_USB_XS 87
137 #define EM2884_BOARD_C3TECH_DIGITAL_DUO 88
138 #define EM2874_BOARD_DELOCK_61959 89
139 #define EM2874_BOARD_KWORLD_UB435Q_V2 90
140 #define EM2765_BOARD_SPEEDLINK_VAD_LAPLACE 91
141 #define EM28178_BOARD_PCTV_461E 92
142 #define EM2874_BOARD_KWORLD_UB435Q_V3 93
143 #define EM28178_BOARD_PCTV_292E 94
144 #define EM2861_BOARD_LEADTEK_VC100 95
145 #define EM28178_BOARD_TERRATEC_T2_STICK_HD 96
146 #define EM2884_BOARD_ELGATO_EYETV_HYBRID_2008 97
148 /* Limits minimum and default number of buffers */
149 #define EM28XX_MIN_BUF 4
150 #define EM28XX_DEF_BUF 8
152 /*Limits the max URB message size */
153 #define URB_MAX_CTRL_SIZE 80
155 /* Params for validated field */
156 #define EM28XX_BOARD_NOT_VALIDATED 1
157 #define EM28XX_BOARD_VALIDATED 0
159 /* Params for em28xx_cmd() audio */
160 #define EM28XX_START_AUDIO 1
161 #define EM28XX_STOP_AUDIO 0
163 /* maximum number of em28xx boards */
164 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
166 /* maximum number of frames that can be queued */
167 #define EM28XX_NUM_FRAMES 5
168 /* number of frames that get used for v4l2_read() */
169 #define EM28XX_NUM_READ_FRAMES 2
171 /* number of buffers for isoc transfers */
172 #define EM28XX_NUM_BUFS 5
173 #define EM28XX_DVB_NUM_BUFS 5
175 /* max number of I2C buses on em28xx devices */
176 #define NUM_I2C_BUSES 2
178 /* isoc transfers: number of packets for each buffer
179 windows requests only 64 packets .. so we better do the same
180 this is what I found out for all alternate numbers there!
182 #define EM28XX_NUM_ISOC_PACKETS 64
183 #define EM28XX_DVB_NUM_ISOC_PACKETS 64
185 /* bulk transfers: transfer buffer size = packet size * packet multiplier
186 USB 2.0 spec says bulk packet size is always 512 bytes
188 #define EM28XX_BULK_PACKET_MULTIPLIER 384
189 #define EM28XX_DVB_BULK_PACKET_MULTIPLIER 384
191 #define EM28XX_INTERLACED_DEFAULT 1
194 * Time in msecs to wait for i2c xfers to finish.
195 * 35ms is the maximum time a SMBUS device could wait when
196 * clock stretching is used. As the transfer itself will take
197 * some time to happen, set it to 35 ms.
199 * Ok, I2C doesn't specify any limit. So, eventually, we may need
200 * to increase this timeout.
202 * FIXME: this assumes that an I2C message is not longer than 1ms.
203 * This is actually dependent on the I2C bus speed, although most
204 * devices use a 100kHz clock. So, this assumtion is true most of
207 #define EM28XX_I2C_XFER_TIMEOUT 36
209 /* time in msecs to wait for AC97 xfers to finish */
210 #define EM28XX_AC97_XFER_TIMEOUT 100
212 /* max. number of button state polling addresses */
213 #define EM28XX_NUM_BUTTON_ADDRESSES_MAX 5
223 struct em28xx_usb_bufs {
224 /* max packet size of isoc transaction */
227 /* number of packets in each buffer */
230 /* number of allocated urbs */
233 /* urb for isoc/bulk transfers */
236 /* transfer buffers for isoc/bulk transfer */
237 char **transfer_buffer;
240 struct em28xx_usb_ctl {
241 /* isoc/bulk transfer buffers for analog mode */
242 struct em28xx_usb_bufs analog_bufs;
244 /* isoc/bulk transfer buffers for digital mode */
245 struct em28xx_usb_bufs digital_bufs;
247 /* Stores already requested buffers */
248 struct em28xx_buffer *vid_buf;
249 struct em28xx_buffer *vbi_buf;
251 /* copy data from URB */
252 int (*urb_data_copy)(struct em28xx *dev, struct urb *urb);
256 /* Struct to enumberate video formats */
259 u32 fourcc; /* v4l2 format id */
264 /* buffer for one video frame */
265 struct em28xx_buffer {
266 /* common v4l buffer stuff -- must be first */
267 struct vb2_buffer vb;
268 struct list_head list;
274 /* counter to control buffer fill */
276 /* NOTE; in interlaced mode, this value is reset to zero at
277 * the start of each new field (not frame !) */
279 /* pointer to vmalloc memory address in vb */
283 struct em28xx_dmaqueue {
284 struct list_head active;
286 wait_queue_head_t wq;
291 #define MAX_EM28XX_INPUT 4
292 enum enum28xx_itype {
293 EM28XX_VMUX_COMPOSITE1 = 1,
294 EM28XX_VMUX_COMPOSITE2,
295 EM28XX_VMUX_COMPOSITE3,
296 EM28XX_VMUX_COMPOSITE4,
298 EM28XX_VMUX_TELEVISION,
305 enum em28xx_ac97_mode {
308 EM28XX_AC97_SIGMATEL,
312 struct em28xx_audio_mode {
313 enum em28xx_ac97_mode ac97;
316 enum em28xx_int_audio_type {
317 EM28XX_INT_AUDIO_NONE = 0,
318 EM28XX_INT_AUDIO_AC97,
319 EM28XX_INT_AUDIO_I2S,
322 enum em28xx_usb_audio_type {
323 EM28XX_USB_AUDIO_NONE = 0,
324 EM28XX_USB_AUDIO_CLASS,
325 EM28XX_USB_AUDIO_VENDOR,
328 /* em28xx has two audio inputs: tuner and line in.
329 However, on most devices, an auxiliary AC97 codec device is used.
330 The AC97 device may have several different inputs and outputs,
331 depending on their model. So, it is possible to use AC97 mixer to
332 address more than two different entries.
335 /* This is the only entry for em28xx tuner input */
336 EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
338 EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
340 /* Some less-common mixer setups */
341 EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
351 EM28XX_AOUT_MASTER = 1 << 0,
352 EM28XX_AOUT_LINE = 1 << 1,
353 EM28XX_AOUT_MONO = 1 << 2,
354 EM28XX_AOUT_LFE = 1 << 3,
355 EM28XX_AOUT_SURR = 1 << 4,
357 /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
358 EM28XX_AOUT_PCM_IN = 1 << 7,
360 /* Bits 10-8 are used to indicate the PCM IN record select */
361 EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
362 EM28XX_AOUT_PCM_CD = 1 << 8,
363 EM28XX_AOUT_PCM_VIDEO = 2 << 8,
364 EM28XX_AOUT_PCM_AUX = 3 << 8,
365 EM28XX_AOUT_PCM_LINE = 4 << 8,
366 EM28XX_AOUT_PCM_STEREO = 5 << 8,
367 EM28XX_AOUT_PCM_MONO = 6 << 8,
368 EM28XX_AOUT_PCM_PHONE = 7 << 8,
371 static inline int ac97_return_record_select(int a_out)
373 return (a_out & 0x700) >> 8;
376 struct em28xx_reg_seq {
378 unsigned char val, mask;
382 struct em28xx_input {
383 enum enum28xx_itype type;
385 enum em28xx_amux amux;
386 enum em28xx_aout aout;
387 struct em28xx_reg_seq *gpio;
390 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
392 enum em28xx_decoder {
393 EM28XX_NODECODER = 0,
406 enum em28xx_adecoder {
407 EM28XX_NOADECODER = 0,
411 enum em28xx_led_role {
412 EM28XX_LED_ANALOG_CAPTURING = 0,
413 EM28XX_LED_DIGITAL_CAPTURING,
414 EM28XX_LED_ILLUMINATION,
415 EM28XX_NUM_LED_ROLES, /* must be the last */
419 enum em28xx_led_role role;
425 enum em28xx_button_role {
426 EM28XX_BUTTON_SNAPSHOT = 0,
427 EM28XX_BUTTON_ILLUMINATION,
428 EM28XX_NUM_BUTTON_ROLES, /* must be the last */
431 struct em28xx_button {
432 enum em28xx_button_role role;
439 struct em28xx_board {
444 unsigned def_i2c_bus; /* Default I2C bus */
447 unsigned int tda9887_conf;
450 struct em28xx_reg_seq *dvb_gpio;
451 struct em28xx_reg_seq *suspend_gpio;
452 struct em28xx_reg_seq *tuner_gpio;
453 struct em28xx_reg_seq *mute_gpio;
455 unsigned int is_em2800:1;
456 unsigned int has_msp34xx:1;
457 unsigned int mts_firmware:1;
458 unsigned int max_range_640_480:1;
459 unsigned int has_dvb:1;
460 unsigned int is_webcam:1;
461 unsigned int valid:1;
462 unsigned int has_ir_i2c:1;
464 unsigned char xclk, i2c_speed;
465 unsigned char radio_addr;
466 unsigned short tvaudio_addr;
468 enum em28xx_decoder decoder;
469 enum em28xx_adecoder adecoder;
471 struct em28xx_input input[MAX_EM28XX_INPUT];
472 struct em28xx_input radio;
475 /* LEDs that need to be controlled explicitly */
476 struct em28xx_led *leds;
479 struct em28xx_button *buttons;
482 struct em28xx_eeprom {
483 u8 id[4]; /* 1a eb 67 95 */
491 __le16 string1, string2, string3;
496 #define EM28XX_CAPTURE_STREAM_EN 1
498 /* em28xx extensions */
499 #define EM28XX_AUDIO 0x10
500 #define EM28XX_DVB 0x20
501 #define EM28XX_RC 0x30
502 #define EM28XX_V4L2 0x40
504 /* em28xx resource types (used for res_get/res_lock etc */
505 #define EM28XX_RESOURCE_VIDEO 0x01
506 #define EM28XX_RESOURCE_VBI 0x02
512 struct v4l2_device v4l2_dev;
513 struct v4l2_ctrl_handler ctrl_handler;
514 struct v4l2_clk *clk;
516 struct video_device vdev;
517 struct video_device vbi_dev;
518 struct video_device radio_dev;
521 struct vb2_queue vb_vidq;
522 struct vb2_queue vb_vbiq;
523 struct mutex vb_queue_lock;
524 struct mutex vb_vbi_queue_lock;
529 /* Camera specific fields */
534 int users; /* user count for exclusive use */
535 int streaming_users; /* number of actively streaming users */
537 u32 frequency; /* selected tuner frequency */
539 struct em28xx_fmt *format;
540 v4l2_std_id norm; /* selected tv norm */
542 /* Progressive/interlaced mode */
544 int interlaced_fieldmode; /* 1=interlaced fields, 0=just top fields */
545 /* FIXME: everything else than interlaced_fieldmode=1 doesn't work */
547 /* Frame properties */
548 int width; /* current frame width */
549 int height; /* current frame height */
550 unsigned hscale; /* horizontal scale factor (see datasheet) */
551 unsigned vscale; /* vertical scale factor (see datasheet) */
552 unsigned int vbi_width;
553 unsigned int vbi_height; /* lines per field */
555 /* Capture state tracking */
559 unsigned int field_count;
562 struct em28xx_audio {
565 char **transfer_buffer;
567 struct usb_device *udev;
568 unsigned int capture_transfer_done;
569 struct snd_pcm_substream *capture_pcm_substream;
571 unsigned int hwptr_done_capture;
572 struct snd_card *sndcard;
579 /* Controls streaming */
580 struct work_struct wq_trigger; /* trigger to start/stop audio */
581 atomic_t stream_started; /* stream should be running if true */
586 enum em28xx_i2c_algo_type {
587 EM28XX_I2C_ALGO_EM28XX = 0,
588 EM28XX_I2C_ALGO_EM2800,
589 EM28XX_I2C_ALGO_EM25XX_BUS_B,
592 struct em28xx_i2c_bus {
596 enum em28xx_i2c_algo_type algo_type;
599 /* main device struct */
603 /* Sub-module data */
604 struct em28xx_v4l2 *v4l2;
605 struct em28xx_dvb *dvb;
606 struct em28xx_audio adev;
607 struct em28xx_IR *ir;
609 /* generic device properties */
610 char name[30]; /* name (including minor) of the device */
611 int model; /* index in the device_data struct */
612 int devno; /* marks the number of this device */
613 enum em28xx_chip_id chip_id;
615 unsigned int is_em25xx:1; /* em25xx/em276x/7x/8x family bridge */
616 unsigned char disconnected:1; /* device has been diconnected */
617 unsigned int has_video:1;
618 unsigned int is_audio_only:1;
619 enum em28xx_int_audio_type int_audio_type;
620 enum em28xx_usb_audio_type usb_audio_type;
622 struct em28xx_board board;
624 enum em28xx_sensor em28xx_sensor; /* camera specific */
626 /* Some older em28xx chips needs a waiting time after writing */
627 unsigned int wait_after_write;
629 struct list_head devlist;
631 u32 i2s_speed; /* I2S speed for audio digital stream */
633 struct em28xx_audio_mode audio_mode;
635 int tuner_type; /* type of the tuner */
638 struct i2c_adapter i2c_adap[NUM_I2C_BUSES];
639 struct i2c_client i2c_client[NUM_I2C_BUSES];
640 struct em28xx_i2c_bus i2c_bus[NUM_I2C_BUSES];
642 unsigned char eeprom_addrwidth_16bit:1;
643 unsigned def_i2c_bus; /* Default I2C bus */
644 unsigned cur_i2c_bus; /* Current I2C bus */
645 struct rt_mutex i2c_bus_lock;
647 /* video for linux */
648 unsigned int ctl_input; /* selected input */
649 unsigned int ctl_ainput;/* selected audio input */
650 unsigned int ctl_aoutput;/* selected audio output */
654 unsigned long hash; /* eeprom hash - for boards with generic ID */
655 unsigned long i2c_hash; /* i2c devicelist hash -
656 for boards with generic ID */
658 struct work_struct request_module_wk;
662 struct mutex ctrl_urb_lock; /* protects urb_buf */
664 /* resources in use */
665 unsigned int resources;
671 /* Isoc control struct */
672 struct em28xx_dmaqueue vidq;
673 struct em28xx_dmaqueue vbiq;
674 struct em28xx_usb_ctl usb_ctl;
678 struct usb_device *udev; /* the usb device */
679 u8 ifnum; /* number of the assigned usb interface */
680 u8 analog_ep_isoc; /* address of isoc endpoint for analog */
681 u8 analog_ep_bulk; /* address of bulk endpoint for analog */
682 u8 dvb_ep_isoc; /* address of isoc endpoint for DVB */
683 u8 dvb_ep_bulk; /* address of bulk endpoint for DVB */
684 int alt; /* alternate setting */
685 int max_pkt_size; /* max packet size of the selected ep at alt */
686 int packet_multiplier; /* multiplier for wMaxPacketSize, used for
687 URB buffer size definition */
688 int num_alt; /* number of alternative settings */
689 unsigned int *alt_max_pkt_size_isoc; /* array of isoc wMaxPacketSize */
690 unsigned int analog_xfer_bulk:1; /* use bulk instead of isoc
691 transfers for analog */
692 int dvb_alt_isoc; /* alternate setting for DVB isoc transfers */
693 unsigned int dvb_max_pkt_size_isoc; /* isoc max packet size of the
694 selected DVB ep at dvb_alt */
695 unsigned int dvb_xfer_bulk:1; /* use bulk instead of isoc
697 char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
699 /* helper funcs that call usb_control_msg */
700 int (*em28xx_write_regs)(struct em28xx *dev, u16 reg,
702 int (*em28xx_read_reg)(struct em28xx *dev, u16 reg);
703 int (*em28xx_read_reg_req_len)(struct em28xx *dev, u8 req, u16 reg,
705 int (*em28xx_write_regs_req)(struct em28xx *dev, u8 req, u16 reg,
707 int (*em28xx_read_reg_req)(struct em28xx *dev, u8 req, u16 reg);
709 enum em28xx_mode mode;
711 /* Button state polling */
712 struct delayed_work buttons_query_work;
713 u8 button_polling_addresses[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
714 u8 button_polling_last_values[EM28XX_NUM_BUTTON_ADDRESSES_MAX];
715 u8 num_button_polling_addresses;
716 u16 button_polling_interval; /* [ms] */
717 /* Snapshot button input device */
718 char snapshot_button_path[30]; /* path of the input dev */
719 struct input_dev *sbutton_input_dev;
722 #define kref_to_dev(d) container_of(d, struct em28xx, ref)
725 struct list_head next;
728 int (*init)(struct em28xx *);
729 int (*fini)(struct em28xx *);
730 int (*suspend)(struct em28xx *);
731 int (*resume)(struct em28xx *);
734 /* Provided by em28xx-i2c.c */
735 void em28xx_do_i2c_scan(struct em28xx *dev, unsigned bus);
736 int em28xx_i2c_register(struct em28xx *dev, unsigned bus,
737 enum em28xx_i2c_algo_type algo_type);
738 int em28xx_i2c_unregister(struct em28xx *dev, unsigned bus);
740 /* Provided by em28xx-core.c */
741 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
743 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
744 int em28xx_read_reg(struct em28xx *dev, u16 reg);
745 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
747 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
748 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
749 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
751 int em28xx_toggle_reg_bits(struct em28xx *dev, u16 reg, u8 bitmask);
753 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
754 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
756 int em28xx_audio_analog_set(struct em28xx *dev);
757 int em28xx_audio_setup(struct em28xx *dev);
759 const struct em28xx_led *em28xx_find_led(struct em28xx *dev,
760 enum em28xx_led_role role);
761 int em28xx_capture_start(struct em28xx *dev, int start);
762 int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk,
763 int num_bufs, int max_pkt_size, int packet_multiplier);
764 int em28xx_init_usb_xfer(struct em28xx *dev, enum em28xx_mode mode,
766 int num_bufs, int max_pkt_size, int packet_multiplier,
768 (struct em28xx *dev, struct urb *urb));
769 void em28xx_uninit_usb_xfer(struct em28xx *dev, enum em28xx_mode mode);
770 void em28xx_stop_urbs(struct em28xx *dev);
771 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
772 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
773 int em28xx_register_extension(struct em28xx_ops *dev);
774 void em28xx_unregister_extension(struct em28xx_ops *dev);
775 void em28xx_init_extension(struct em28xx *dev);
776 void em28xx_close_extension(struct em28xx *dev);
777 int em28xx_suspend_extension(struct em28xx *dev);
778 int em28xx_resume_extension(struct em28xx *dev);
780 /* Provided by em28xx-cards.c */
781 extern struct em28xx_board em28xx_boards[];
782 extern struct usb_device_id em28xx_id_table[];
783 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
784 void em28xx_setup_xc3028(struct em28xx *dev, struct xc2028_ctrl *ctl);
785 void em28xx_free_device(struct kref *ref);
787 /* Provided by em28xx-camera.c */
788 int em28xx_detect_sensor(struct em28xx *dev);
789 int em28xx_init_camera(struct em28xx *dev);
793 #define em28xx_err(fmt, arg...) do {\
794 printk(KERN_ERR fmt , ##arg); } while (0)
796 #define em28xx_errdev(fmt, arg...) do {\
797 printk(KERN_ERR "%s: "fmt,\
798 dev->name , ##arg); } while (0)
800 #define em28xx_info(fmt, arg...) do {\
801 printk(KERN_INFO "%s: "fmt,\
802 dev->name , ##arg); } while (0)
803 #define em28xx_warn(fmt, arg...) do {\
804 printk(KERN_WARNING "%s: "fmt,\
805 dev->name , ##arg); } while (0)