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>
30 #include <media/v4l2-device.h>
32 #include <linux/i2c.h>
33 #include <linux/mutex.h>
34 #include <media/ir-kbd-i2c.h>
35 #if defined(CONFIG_VIDEO_EM28XX_DVB) || defined(CONFIG_VIDEO_EM28XX_DVB_MODULE)
36 #include <media/videobuf-dvb.h>
38 #include "tuner-xc2028.h"
39 #include "em28xx-reg.h"
41 /* Boards supported by driver */
42 #define EM2800_BOARD_UNKNOWN 0
43 #define EM2820_BOARD_UNKNOWN 1
44 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
45 #define EM2820_BOARD_PINNACLE_USB_2 3
46 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
47 #define EM2820_BOARD_MSI_VOX_USB_2 5
48 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
49 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
50 #define EM2800_BOARD_KWORLD_USB2800 8
51 #define EM2820_BOARD_PINNACLE_DVC_90 9
52 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
53 #define EM2880_BOARD_TERRATEC_HYBRID_XS 11
54 #define EM2820_BOARD_KWORLD_PVRTV2800RF 12
55 #define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
56 #define EM2820_BOARD_PROLINK_PLAYTV_USB2 14
57 #define EM2800_BOARD_VGEAR_POCKETTV 15
58 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950 16
59 #define EM2880_BOARD_PINNACLE_PCTV_HD_PRO 17
60 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2 18
61 #define EM2860_BOARD_SAA711X_REFERENCE_DESIGN 19
62 #define EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600 20
63 #define EM2800_BOARD_GRABBEEX_USB2800 21
64 #define EM2750_BOARD_UNKNOWN 22
65 #define EM2750_BOARD_DLCW_130 23
66 #define EM2820_BOARD_DLINK_USB_TV 24
67 #define EM2820_BOARD_GADMEI_UTV310 25
68 #define EM2820_BOARD_HERCULES_SMART_TV_USB2 26
69 #define EM2820_BOARD_PINNACLE_USB_2_FM1216ME 27
70 #define EM2820_BOARD_LEADTEK_WINFAST_USBII_DELUXE 28
71 #define EM2860_BOARD_TVP5150_REFERENCE_DESIGN 29
72 #define EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
73 #define EM2821_BOARD_USBGEAR_VD204 31
74 #define EM2821_BOARD_SUPERCOMP_USB_2 32
75 #define EM2860_BOARD_TERRATEC_HYBRID_XS 34
76 #define EM2860_BOARD_TYPHOON_DVD_MAKER 35
77 #define EM2860_BOARD_NETGMBH_CAM 36
78 #define EM2860_BOARD_GADMEI_UTV330 37
79 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
80 #define EM2861_BOARD_KWORLD_PVRTV_300U 39
81 #define EM2861_BOARD_PLEXTOR_PX_TV100U 40
82 #define EM2870_BOARD_KWORLD_350U 41
83 #define EM2870_BOARD_KWORLD_355U 42
84 #define EM2870_BOARD_TERRATEC_XS 43
85 #define EM2870_BOARD_TERRATEC_XS_MT2060 44
86 #define EM2870_BOARD_PINNACLE_PCTV_DVB 45
87 #define EM2870_BOARD_COMPRO_VIDEOMATE 46
88 #define EM2880_BOARD_KWORLD_DVB_305U 47
89 #define EM2880_BOARD_KWORLD_DVB_310U 48
90 #define EM2880_BOARD_MSI_DIGIVOX_AD 49
91 #define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
92 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
93 #define EM2881_BOARD_DNT_DA2_HYBRID 52
94 #define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
95 #define EM2882_BOARD_KWORLD_VS_DVBT 54
96 #define EM2882_BOARD_TERRATEC_HYBRID_XS 55
97 #define EM2882_BOARD_PINNACLE_HYBRID_PRO 56
98 #define EM2883_BOARD_KWORLD_HYBRID_330U 57
99 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
100 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
101 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
102 #define EM2820_BOARD_GADMEI_TVR200 62
103 #define EM2860_BOARD_KAIOMY_TVNPC_U2 63
104 #define EM2860_BOARD_EASYCAP 64
105 #define EM2820_BOARD_IODATA_GVMVP_SZ 65
106 #define EM2880_BOARD_EMPIRE_DUAL_TV 66
107 #define EM2860_BOARD_TERRATEC_GRABBY 67
108 #define EM2860_BOARD_TERRATEC_AV350 68
109 #define EM2882_BOARD_KWORLD_ATSC_315U 69
110 #define EM2882_BOARD_EVGA_INDTUBE 70
111 #define EM2820_BOARD_SILVERCREST_WEBCAM 71
112 #define EM2861_BOARD_GADMEI_UTV330PLUS 72
113 #define EM2870_BOARD_REDDO_DVB_C_USB_BOX 73
114 #define EM2800_BOARD_VC211A 74
115 #define EM2882_BOARD_DIKOM_DK300 75
117 /* Limits minimum and default number of buffers */
118 #define EM28XX_MIN_BUF 4
119 #define EM28XX_DEF_BUF 8
121 /*Limits the max URB message size */
122 #define URB_MAX_CTRL_SIZE 80
124 /* Params for validated field */
125 #define EM28XX_BOARD_NOT_VALIDATED 1
126 #define EM28XX_BOARD_VALIDATED 0
128 /* Params for em28xx_cmd() audio */
129 #define EM28XX_START_AUDIO 1
130 #define EM28XX_STOP_AUDIO 0
132 /* maximum number of em28xx boards */
133 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
135 /* maximum number of frames that can be queued */
136 #define EM28XX_NUM_FRAMES 5
137 /* number of frames that get used for v4l2_read() */
138 #define EM28XX_NUM_READ_FRAMES 2
140 /* number of buffers for isoc transfers */
141 #define EM28XX_NUM_BUFS 5
143 /* number of packets for each buffer
144 windows requests only 64 packets .. so we better do the same
145 this is what I found out for all alternate numbers there!
147 #define EM28XX_NUM_PACKETS 64
149 #define EM28XX_INTERLACED_DEFAULT 1
152 #define (use usbview if you want to get the other alternate number infos)
154 #define alternate number 2
155 #define Endpoint Address: 82
159 Max Packet Size: 1448
168 Max Packet Size: 3072
172 /* time to wait when stopping the isoc transfer */
173 #define EM28XX_URB_TIMEOUT \
174 msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
176 /* time in msecs to wait for i2c writes to finish */
177 #define EM2800_I2C_WRITE_TIMEOUT 20
185 enum em28xx_stream_state {
193 struct em28xx_usb_isoc_ctl {
194 /* max packet size of isoc transaction */
197 /* number of allocated urbs */
200 /* urb for isoc transfers */
203 /* transfer buffers for isoc transfer */
204 char **transfer_buffer;
206 /* Last buffer command and region */
208 int pos, size, pktsize;
210 /* Last field: ODD or EVEN? */
213 /* Stores incomplete commands */
217 /* Stores already requested buffers */
218 struct em28xx_buffer *vid_buf;
219 struct em28xx_buffer *vbi_buf;
221 /* Stores the number of received fields */
224 /* isoc urb callback */
225 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
229 /* Struct to enumberate video formats */
232 u32 fourcc; /* v4l2 format id */
237 /* buffer for one video frame */
238 struct em28xx_buffer {
239 /* common v4l buffer stuff -- must be first */
240 struct videobuf_buffer vb;
242 struct list_head frame;
247 struct em28xx_dmaqueue {
248 struct list_head active;
249 struct list_head queued;
251 wait_queue_head_t wq;
253 /* Counters to control buffer fill */
258 enum em28xx_io_method {
266 #define MAX_EM28XX_INPUT 4
267 enum enum28xx_itype {
268 EM28XX_VMUX_COMPOSITE1 = 1,
269 EM28XX_VMUX_COMPOSITE2,
270 EM28XX_VMUX_COMPOSITE3,
271 EM28XX_VMUX_COMPOSITE4,
273 EM28XX_VMUX_TELEVISION,
280 enum em28xx_ac97_mode {
283 EM28XX_AC97_SIGMATEL,
287 struct em28xx_audio_mode {
288 enum em28xx_ac97_mode ac97;
293 unsigned int has_audio:1;
295 unsigned int i2s_3rates:1;
296 unsigned int i2s_5rates:1;
299 /* em28xx has two audio inputs: tuner and line in.
300 However, on most devices, an auxiliary AC97 codec device is used.
301 The AC97 device may have several different inputs and outputs,
302 depending on their model. So, it is possible to use AC97 mixer to
303 address more than two different entries.
306 /* This is the only entry for em28xx tuner input */
307 EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
309 EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
311 /* Some less-common mixer setups */
312 EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
322 EM28XX_AOUT_MASTER = 1 << 0,
323 EM28XX_AOUT_LINE = 1 << 1,
324 EM28XX_AOUT_MONO = 1 << 2,
325 EM28XX_AOUT_LFE = 1 << 3,
326 EM28XX_AOUT_SURR = 1 << 4,
328 /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
329 EM28XX_AOUT_PCM_IN = 1 << 7,
331 /* Bits 10-8 are used to indicate the PCM IN record select */
332 EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
333 EM28XX_AOUT_PCM_CD = 1 << 8,
334 EM28XX_AOUT_PCM_VIDEO = 2 << 8,
335 EM28XX_AOUT_PCM_AUX = 3 << 8,
336 EM28XX_AOUT_PCM_LINE = 4 << 8,
337 EM28XX_AOUT_PCM_STEREO = 5 << 8,
338 EM28XX_AOUT_PCM_MONO = 6 << 8,
339 EM28XX_AOUT_PCM_PHONE = 7 << 8,
342 static inline int ac97_return_record_select(int a_out)
344 return (a_out & 0x700) >> 8;
347 struct em28xx_reg_seq {
349 unsigned char val, mask;
353 struct em28xx_input {
354 enum enum28xx_itype type;
356 enum em28xx_amux amux;
357 enum em28xx_aout aout;
358 struct em28xx_reg_seq *gpio;
361 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
363 enum em28xx_decoder {
364 EM28XX_NODECODER = 0,
376 enum em28xx_adecoder {
377 EM28XX_NOADECODER = 0,
381 struct em28xx_board {
388 unsigned int tda9887_conf;
391 struct em28xx_reg_seq *dvb_gpio;
392 struct em28xx_reg_seq *suspend_gpio;
393 struct em28xx_reg_seq *tuner_gpio;
394 struct em28xx_reg_seq *mute_gpio;
396 unsigned int is_em2800:1;
397 unsigned int has_msp34xx:1;
398 unsigned int mts_firmware:1;
399 unsigned int max_range_640_480:1;
400 unsigned int has_dvb:1;
401 unsigned int has_snapshot_button:1;
402 unsigned int is_webcam:1;
403 unsigned int valid:1;
404 unsigned int has_ir_i2c:1;
406 unsigned char xclk, i2c_speed;
407 unsigned char radio_addr;
408 unsigned short tvaudio_addr;
410 enum em28xx_decoder decoder;
411 enum em28xx_adecoder adecoder;
413 struct em28xx_input input[MAX_EM28XX_INPUT];
414 struct em28xx_input radio;
418 struct em28xx_eeprom {
419 u32 id; /* 0x9567eb1a */
427 u16 string1, string2, string3;
433 enum em28xx_dev_state {
434 DEV_INITIALIZED = 0x01,
435 DEV_DISCONNECTED = 0x02,
436 DEV_MISCONFIGURED = 0x04,
439 #define EM28XX_AUDIO_BUFS 5
440 #define EM28XX_NUM_AUDIO_PACKETS 64
441 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
442 #define EM28XX_CAPTURE_STREAM_EN 1
444 /* em28xx extensions */
445 #define EM28XX_AUDIO 0x10
446 #define EM28XX_DVB 0x20
448 /* em28xx resource types (used for res_get/res_lock etc */
449 #define EM28XX_RESOURCE_VIDEO 0x01
450 #define EM28XX_RESOURCE_VBI 0x02
452 struct em28xx_audio {
454 char *transfer_buffer[EM28XX_AUDIO_BUFS];
455 struct urb *urb[EM28XX_AUDIO_BUFS];
456 struct usb_device *udev;
457 unsigned int capture_transfer_done;
458 struct snd_pcm_substream *capture_pcm_substream;
460 unsigned int hwptr_done_capture;
461 struct snd_card *sndcard;
464 enum em28xx_stream_state capture_stream;
473 unsigned int resources;
475 struct videobuf_queue vb_vidq;
476 struct videobuf_queue vb_vbiq;
478 enum v4l2_buf_type type;
481 /* main device struct */
483 /* generic device properties */
484 char name[30]; /* name (including minor) of the device */
485 int model; /* index in the device_data struct */
486 int devno; /* marks the number of this device */
487 enum em28xx_chip_id chip_id;
489 struct v4l2_device v4l2_dev;
490 struct em28xx_board board;
492 /* Webcam specific fields */
493 enum em28xx_sensor em28xx_sensor;
494 int sensor_xres, sensor_yres;
497 /* Allows progressive (e. g. non-interlaced) mode */
500 /* Vinmode/Vinctl used at the driver */
503 unsigned int has_audio_class:1;
504 unsigned int has_alsa_audio:1;
506 struct em28xx_fmt *format;
508 struct em28xx_IR *ir;
510 /* Some older em28xx chips needs a waiting time after writing */
511 unsigned int wait_after_write;
513 struct list_head devlist;
515 u32 i2s_speed; /* I2S speed for audio digital stream */
517 struct em28xx_audio_mode audio_mode;
519 int tuner_type; /* type of the tuner */
520 int tuner_addr; /* tuner address */
523 struct i2c_adapter i2c_adap;
524 struct i2c_client i2c_client;
525 /* video for linux */
526 int users; /* user count for exclusive use */
527 struct video_device *vdev; /* video for linux device struct */
528 v4l2_std_id norm; /* selected tv norm */
529 int ctl_freq; /* selected frequency */
530 unsigned int ctl_input; /* selected input */
531 unsigned int ctl_ainput;/* selected audio input */
532 unsigned int ctl_aoutput;/* selected audio output */
535 /* frame properties */
536 int width; /* current frame width */
537 int height; /* current frame height */
538 unsigned hscale; /* horizontal scale factor (see datasheet) */
539 unsigned vscale; /* vertical scale factor (see datasheet) */
540 int interlaced; /* 1=interlace fileds, 0=just top fileds */
541 unsigned int video_bytesread; /* Number of bytes read */
543 unsigned long hash; /* eeprom hash - for boards with generic ID */
544 unsigned long i2c_hash; /* i2c devicelist hash -
545 for boards with generic ID */
547 struct em28xx_audio adev;
550 enum em28xx_dev_state state;
551 enum em28xx_io_method io;
553 /* vbi related state tracking */
556 unsigned char cur_field;
557 unsigned int vbi_width;
558 unsigned int vbi_height; /* lines per field */
560 struct work_struct request_module_wk;
564 struct mutex ctrl_urb_lock; /* protects urb_buf */
565 /* spinlock_t queue_lock; */
566 struct list_head inqueue, outqueue;
567 wait_queue_head_t open, wait_frame, wait_stream;
568 struct video_device *vbi_dev;
569 struct video_device *radio_dev;
571 /* resources in use */
572 unsigned int resources;
574 unsigned char eedata[256];
576 /* Isoc control struct */
577 struct em28xx_dmaqueue vidq;
578 struct em28xx_dmaqueue vbiq;
579 struct em28xx_usb_isoc_ctl isoc_ctl;
583 struct usb_device *udev; /* the usb device */
584 int alt; /* alternate */
585 int max_pkt_size; /* max packet size of isoc transaction */
586 int num_alt; /* Number of alternative settings */
587 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
588 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
589 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
591 char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
593 /* helper funcs that call usb_control_msg */
594 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
596 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
597 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
599 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
601 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
603 enum em28xx_mode mode;
605 /* register numbers for GPO/GPIO registers */
606 u16 reg_gpo_num, reg_gpio_num;
608 /* Caches GPO and GPIO registers */
609 unsigned char reg_gpo, reg_gpio;
611 /* Snapshot button */
612 char snapshot_button_path[30]; /* path of the input dev */
613 struct input_dev *sbutton_input_dev;
614 struct delayed_work sbutton_query_work;
616 struct em28xx_dvb *dvb;
618 /* I2C keyboard data */
619 struct IR_i2c_init_data init_data;
623 struct list_head next;
626 int (*init)(struct em28xx *);
627 int (*fini)(struct em28xx *);
630 /* Provided by em28xx-i2c.c */
631 void em28xx_do_i2c_scan(struct em28xx *dev);
632 int em28xx_i2c_register(struct em28xx *dev);
633 int em28xx_i2c_unregister(struct em28xx *dev);
635 /* Provided by em28xx-core.c */
637 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
638 void em28xx_queue_unusedframes(struct em28xx *dev);
639 void em28xx_release_buffers(struct em28xx *dev);
641 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
643 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
644 int em28xx_read_reg(struct em28xx *dev, u16 reg);
645 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
647 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
648 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
649 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
652 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
653 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
655 int em28xx_audio_analog_set(struct em28xx *dev);
656 int em28xx_audio_setup(struct em28xx *dev);
658 int em28xx_colorlevels_set_default(struct em28xx *dev);
659 int em28xx_capture_start(struct em28xx *dev, int start);
660 int em28xx_vbi_supported(struct em28xx *dev);
661 int em28xx_set_outfmt(struct em28xx *dev);
662 int em28xx_resolution_set(struct em28xx *dev);
663 int em28xx_set_alternate(struct em28xx *dev);
664 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
665 int num_bufs, int max_pkt_size,
666 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
667 void em28xx_uninit_isoc(struct em28xx *dev);
668 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
669 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
670 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
671 void em28xx_wake_i2c(struct em28xx *dev);
672 void em28xx_remove_from_devlist(struct em28xx *dev);
673 void em28xx_add_into_devlist(struct em28xx *dev);
674 int em28xx_register_extension(struct em28xx_ops *dev);
675 void em28xx_unregister_extension(struct em28xx_ops *dev);
676 void em28xx_init_extension(struct em28xx *dev);
677 void em28xx_close_extension(struct em28xx *dev);
679 /* Provided by em28xx-video.c */
680 int em28xx_register_analog_devices(struct em28xx *dev);
681 void em28xx_release_analog_resources(struct em28xx *dev);
683 /* Provided by em28xx-cards.c */
684 extern int em2800_variant_detect(struct usb_device *udev, int model);
685 extern void em28xx_pre_card_setup(struct em28xx *dev);
686 extern void em28xx_card_setup(struct em28xx *dev);
687 extern struct em28xx_board em28xx_boards[];
688 extern struct usb_device_id em28xx_id_table[];
689 extern const unsigned int em28xx_bcount;
690 void em28xx_register_i2c_ir(struct em28xx *dev);
691 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
692 void em28xx_release_resources(struct em28xx *dev);
694 /* Provided by em28xx-input.c */
695 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
696 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
697 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
699 int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key,
701 void em28xx_register_snapshot_button(struct em28xx *dev);
702 void em28xx_deregister_snapshot_button(struct em28xx *dev);
704 int em28xx_ir_init(struct em28xx *dev);
705 int em28xx_ir_fini(struct em28xx *dev);
707 /* Provided by em28xx-vbi.c */
708 extern struct videobuf_queue_ops em28xx_vbi_qops;
712 #define em28xx_err(fmt, arg...) do {\
713 printk(KERN_ERR fmt , ##arg); } while (0)
715 #define em28xx_errdev(fmt, arg...) do {\
716 printk(KERN_ERR "%s: "fmt,\
717 dev->name , ##arg); } while (0)
719 #define em28xx_info(fmt, arg...) do {\
720 printk(KERN_INFO "%s: "fmt,\
721 dev->name , ##arg); } while (0)
722 #define em28xx_warn(fmt, arg...) do {\
723 printk(KERN_WARNING "%s: "fmt,\
724 dev->name , ##arg); } while (0)
726 static inline int em28xx_compression_disable(struct em28xx *dev)
728 /* side effect of disabling scaler and mixer */
729 return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
732 static inline int em28xx_contrast_get(struct em28xx *dev)
734 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
737 static inline int em28xx_brightness_get(struct em28xx *dev)
739 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
742 static inline int em28xx_saturation_get(struct em28xx *dev)
744 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
747 static inline int em28xx_u_balance_get(struct em28xx *dev)
749 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
752 static inline int em28xx_v_balance_get(struct em28xx *dev)
754 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
757 static inline int em28xx_gamma_get(struct em28xx *dev)
759 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
762 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
765 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
768 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
771 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
774 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
777 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
780 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
783 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
786 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
789 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
792 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
795 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
798 /*FIXME: maxw should be dependent of alt mode */
799 static inline unsigned int norm_maxw(struct em28xx *dev)
801 if (dev->board.is_webcam)
802 return dev->sensor_xres;
804 if (dev->board.max_range_640_480 || dev->board.is_em2800)
810 static inline unsigned int norm_maxh(struct em28xx *dev)
812 if (dev->board.is_webcam)
813 return dev->sensor_yres;
815 if (dev->board.max_range_640_480)
818 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;