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 EM2820_BOARD_VIDEOLOGY_20K14XUSB 30
72 #define EM2821_BOARD_USBGEAR_VD204 31
73 #define EM2821_BOARD_SUPERCOMP_USB_2 32
74 #define EM2860_BOARD_TERRATEC_HYBRID_XS 34
75 #define EM2860_BOARD_TYPHOON_DVD_MAKER 35
76 #define EM2860_BOARD_NETGMBH_CAM 36
77 #define EM2860_BOARD_GADMEI_UTV330 37
78 #define EM2861_BOARD_YAKUMO_MOVIE_MIXER 38
79 #define EM2861_BOARD_KWORLD_PVRTV_300U 39
80 #define EM2861_BOARD_PLEXTOR_PX_TV100U 40
81 #define EM2870_BOARD_KWORLD_350U 41
82 #define EM2870_BOARD_KWORLD_355U 42
83 #define EM2870_BOARD_TERRATEC_XS 43
84 #define EM2870_BOARD_TERRATEC_XS_MT2060 44
85 #define EM2870_BOARD_PINNACLE_PCTV_DVB 45
86 #define EM2870_BOARD_COMPRO_VIDEOMATE 46
87 #define EM2880_BOARD_KWORLD_DVB_305U 47
88 #define EM2880_BOARD_KWORLD_DVB_310U 48
89 #define EM2880_BOARD_MSI_DIGIVOX_AD 49
90 #define EM2880_BOARD_MSI_DIGIVOX_AD_II 50
91 #define EM2880_BOARD_TERRATEC_HYBRID_XS_FR 51
92 #define EM2881_BOARD_DNT_DA2_HYBRID 52
93 #define EM2881_BOARD_PINNACLE_HYBRID_PRO 53
94 #define EM2882_BOARD_KWORLD_VS_DVBT 54
95 #define EM2882_BOARD_TERRATEC_HYBRID_XS 55
96 #define EM2882_BOARD_PINNACLE_HYBRID_PRO 56
97 #define EM2883_BOARD_KWORLD_HYBRID_330U 57
98 #define EM2820_BOARD_COMPRO_VIDEOMATE_FORYOU 58
99 #define EM2883_BOARD_HAUPPAUGE_WINTV_HVR_850 60
100 #define EM2820_BOARD_PROLINK_PLAYTV_BOX4_USB2 61
101 #define EM2820_BOARD_GADMEI_TVR200 62
102 #define EM2860_BOARD_KAIOMY_TVNPC_U2 63
103 #define EM2860_BOARD_EASYCAP 64
104 #define EM2820_BOARD_IODATA_GVMVP_SZ 65
105 #define EM2880_BOARD_EMPIRE_DUAL_TV 66
106 #define EM2860_BOARD_TERRATEC_GRABBY 67
107 #define EM2860_BOARD_TERRATEC_AV350 68
108 #define EM2882_BOARD_KWORLD_ATSC_315U 69
110 /* Limits minimum and default number of buffers */
111 #define EM28XX_MIN_BUF 4
112 #define EM28XX_DEF_BUF 8
114 /*Limits the max URB message size */
115 #define URB_MAX_CTRL_SIZE 80
117 /* Params for validated field */
118 #define EM28XX_BOARD_NOT_VALIDATED 1
119 #define EM28XX_BOARD_VALIDATED 0
121 /* Params for em28xx_cmd() audio */
122 #define EM28XX_START_AUDIO 1
123 #define EM28XX_STOP_AUDIO 0
125 /* maximum number of em28xx boards */
126 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
128 /* maximum number of frames that can be queued */
129 #define EM28XX_NUM_FRAMES 5
130 /* number of frames that get used for v4l2_read() */
131 #define EM28XX_NUM_READ_FRAMES 2
133 /* number of buffers for isoc transfers */
134 #define EM28XX_NUM_BUFS 5
136 /* number of packets for each buffer
137 windows requests only 40 packets .. so we better do the same
138 this is what I found out for all alternate numbers there!
140 #define EM28XX_NUM_PACKETS 40
142 /* default alternate; 0 means choose the best */
143 #define EM28XX_PINOUT 0
145 #define EM28XX_INTERLACED_DEFAULT 1
148 #define (use usbview if you want to get the other alternate number infos)
150 #define alternate number 2
151 #define Endpoint Address: 82
155 Max Packet Size: 1448
164 Max Packet Size: 3072
168 /* time to wait when stopping the isoc transfer */
169 #define EM28XX_URB_TIMEOUT \
170 msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
172 /* time in msecs to wait for i2c writes to finish */
173 #define EM2800_I2C_WRITE_TIMEOUT 20
181 enum em28xx_stream_state {
189 struct em28xx_usb_isoc_ctl {
190 /* max packet size of isoc transaction */
193 /* number of allocated urbs */
196 /* urb for isoc transfers */
199 /* transfer buffers for isoc transfer */
200 char **transfer_buffer;
202 /* Last buffer command and region */
204 int pos, size, pktsize;
206 /* Last field: ODD or EVEN? */
209 /* Stores incomplete commands */
213 /* Stores already requested buffers */
214 struct em28xx_buffer *buf;
216 /* Stores the number of received fields */
219 /* isoc urb callback */
220 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
224 /* Struct to enumberate video formats */
227 u32 fourcc; /* v4l2 format id */
232 /* buffer for one video frame */
233 struct em28xx_buffer {
234 /* common v4l buffer stuff -- must be first */
235 struct videobuf_buffer vb;
237 struct list_head frame;
242 struct em28xx_dmaqueue {
243 struct list_head active;
244 struct list_head queued;
246 wait_queue_head_t wq;
248 /* Counters to control buffer fill */
253 enum em28xx_io_method {
261 #define MAX_EM28XX_INPUT 4
262 enum enum28xx_itype {
263 EM28XX_VMUX_COMPOSITE1 = 1,
264 EM28XX_VMUX_COMPOSITE2,
265 EM28XX_VMUX_COMPOSITE3,
266 EM28XX_VMUX_COMPOSITE4,
268 EM28XX_VMUX_TELEVISION,
275 enum em28xx_ac97_mode {
278 EM28XX_AC97_SIGMATEL,
282 struct em28xx_audio_mode {
283 enum em28xx_ac97_mode ac97;
288 unsigned int has_audio:1;
290 unsigned int i2s_3rates:1;
291 unsigned int i2s_5rates:1;
294 /* em28xx has two audio inputs: tuner and line in.
295 However, on most devices, an auxiliary AC97 codec device is used.
296 The AC97 device may have several different inputs and outputs,
297 depending on their model. So, it is possible to use AC97 mixer to
298 address more than two different entries.
301 /* This is the only entry for em28xx tuner input */
302 EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
304 EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
306 /* Some less-common mixer setups */
307 EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
317 EM28XX_AOUT_MASTER = 1 << 0,
318 EM28XX_AOUT_LINE = 1 << 1,
319 EM28XX_AOUT_MONO = 1 << 2,
320 EM28XX_AOUT_LFE = 1 << 3,
321 EM28XX_AOUT_SURR = 1 << 4,
323 /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
324 EM28XX_AOUT_PCM_IN = 1 << 7,
326 /* Bits 10-8 are used to indicate the PCM IN record select */
327 EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
328 EM28XX_AOUT_PCM_CD = 1 << 8,
329 EM28XX_AOUT_PCM_VIDEO = 2 << 8,
330 EM28XX_AOUT_PCM_AUX = 3 << 8,
331 EM28XX_AOUT_PCM_LINE = 4 << 8,
332 EM28XX_AOUT_PCM_STEREO = 5 << 8,
333 EM28XX_AOUT_PCM_MONO = 6 << 8,
334 EM28XX_AOUT_PCM_PHONE = 7 << 8,
337 static inline int ac97_return_record_select(int a_out)
339 return (a_out & 0x700) >> 8;
342 struct em28xx_reg_seq {
344 unsigned char val, mask;
348 struct em28xx_input {
349 enum enum28xx_itype type;
351 enum em28xx_amux amux;
352 enum em28xx_aout aout;
353 struct em28xx_reg_seq *gpio;
356 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
358 enum em28xx_decoder {
364 enum em28xx_adecoder {
365 EM28XX_NOADECODER = 0,
369 struct em28xx_board {
376 unsigned int tda9887_conf;
379 struct em28xx_reg_seq *dvb_gpio;
380 struct em28xx_reg_seq *suspend_gpio;
381 struct em28xx_reg_seq *tuner_gpio;
382 struct em28xx_reg_seq *mute_gpio;
384 unsigned int is_em2800:1;
385 unsigned int has_msp34xx:1;
386 unsigned int mts_firmware:1;
387 unsigned int max_range_640_480:1;
388 unsigned int has_dvb:1;
389 unsigned int has_snapshot_button:1;
390 unsigned int valid:1;
392 unsigned char xclk, i2c_speed;
393 unsigned char radio_addr;
394 unsigned short tvaudio_addr;
396 enum em28xx_decoder decoder;
397 enum em28xx_adecoder adecoder;
399 struct em28xx_input input[MAX_EM28XX_INPUT];
400 struct em28xx_input radio;
401 IR_KEYTAB_TYPE *ir_codes;
404 struct em28xx_eeprom {
405 u32 id; /* 0x9567eb1a */
413 u16 string1, string2, string3;
419 enum em28xx_dev_state {
420 DEV_INITIALIZED = 0x01,
421 DEV_DISCONNECTED = 0x02,
422 DEV_MISCONFIGURED = 0x04,
425 #define EM28XX_AUDIO_BUFS 5
426 #define EM28XX_NUM_AUDIO_PACKETS 64
427 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
428 #define EM28XX_CAPTURE_STREAM_EN 1
430 /* em28xx extensions */
431 #define EM28XX_AUDIO 0x10
432 #define EM28XX_DVB 0x20
434 struct em28xx_audio {
436 char *transfer_buffer[EM28XX_AUDIO_BUFS];
437 struct urb *urb[EM28XX_AUDIO_BUFS];
438 struct usb_device *udev;
439 unsigned int capture_transfer_done;
440 struct snd_pcm_substream *capture_pcm_substream;
442 unsigned int hwptr_done_capture;
443 struct snd_card *sndcard;
446 enum em28xx_stream_state capture_stream;
454 unsigned int stream_on:1; /* Locks streams */
457 struct videobuf_queue vb_vidq;
459 enum v4l2_buf_type type;
462 /* main device struct */
464 /* generic device properties */
465 char name[30]; /* name (including minor) of the device */
466 int model; /* index in the device_data struct */
467 int devno; /* marks the number of this device */
468 enum em28xx_chip_id chip_id;
470 struct v4l2_device v4l2_dev;
471 struct em28xx_board board;
473 unsigned int stream_on:1; /* Locks streams */
474 unsigned int has_audio_class:1;
475 unsigned int has_alsa_audio:1;
477 struct em28xx_fmt *format;
479 struct em28xx_IR *ir;
481 /* Some older em28xx chips needs a waiting time after writing */
482 unsigned int wait_after_write;
484 struct list_head devlist;
486 u32 i2s_speed; /* I2S speed for audio digital stream */
488 struct em28xx_audio_mode audio_mode;
490 int tuner_type; /* type of the tuner */
491 int tuner_addr; /* tuner address */
494 struct i2c_adapter i2c_adap;
495 struct i2c_client i2c_client;
496 /* video for linux */
497 int users; /* user count for exclusive use */
498 struct video_device *vdev; /* video for linux device struct */
499 v4l2_std_id norm; /* selected tv norm */
500 int ctl_freq; /* selected frequency */
501 unsigned int ctl_input; /* selected input */
502 unsigned int ctl_ainput;/* selected audio input */
503 unsigned int ctl_aoutput;/* selected audio output */
506 /* frame properties */
507 int width; /* current frame width */
508 int height; /* current frame height */
509 unsigned hscale; /* horizontal scale factor (see datasheet) */
510 unsigned vscale; /* vertical scale factor (see datasheet) */
511 int interlaced; /* 1=interlace fileds, 0=just top fileds */
512 unsigned int video_bytesread; /* Number of bytes read */
514 unsigned long hash; /* eeprom hash - for boards with generic ID */
515 unsigned long i2c_hash; /* i2c devicelist hash -
516 for boards with generic ID */
518 struct em28xx_audio adev;
521 enum em28xx_dev_state state;
522 enum em28xx_io_method io;
524 struct work_struct request_module_wk;
528 struct mutex ctrl_urb_lock; /* protects urb_buf */
529 /* spinlock_t queue_lock; */
530 struct list_head inqueue, outqueue;
531 wait_queue_head_t open, wait_frame, wait_stream;
532 struct video_device *vbi_dev;
533 struct video_device *radio_dev;
535 unsigned char eedata[256];
537 /* Isoc control struct */
538 struct em28xx_dmaqueue vidq;
539 struct em28xx_usb_isoc_ctl isoc_ctl;
543 struct usb_device *udev; /* the usb device */
544 int alt; /* alternate */
545 int max_pkt_size; /* max packet size of isoc transaction */
546 int num_alt; /* Number of alternative settings */
547 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
548 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
549 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
551 char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
553 /* helper funcs that call usb_control_msg */
554 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
556 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
557 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
559 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
561 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
563 enum em28xx_mode mode;
565 /* register numbers for GPO/GPIO registers */
566 u16 reg_gpo_num, reg_gpio_num;
568 /* Caches GPO and GPIO registers */
569 unsigned char reg_gpo, reg_gpio;
571 /* Snapshot button */
572 char snapshot_button_path[30]; /* path of the input dev */
573 struct input_dev *sbutton_input_dev;
574 struct delayed_work sbutton_query_work;
576 struct em28xx_dvb *dvb;
580 struct list_head next;
583 int (*init)(struct em28xx *);
584 int (*fini)(struct em28xx *);
587 /* Provided by em28xx-i2c.c */
588 void em28xx_do_i2c_scan(struct em28xx *dev);
589 int em28xx_i2c_register(struct em28xx *dev);
590 int em28xx_i2c_unregister(struct em28xx *dev);
592 /* Provided by em28xx-core.c */
594 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
595 void em28xx_queue_unusedframes(struct em28xx *dev);
596 void em28xx_release_buffers(struct em28xx *dev);
598 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
600 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
601 int em28xx_read_reg(struct em28xx *dev, u16 reg);
602 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
604 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
605 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
607 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
608 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
610 int em28xx_audio_analog_set(struct em28xx *dev);
611 int em28xx_audio_setup(struct em28xx *dev);
613 int em28xx_colorlevels_set_default(struct em28xx *dev);
614 int em28xx_capture_start(struct em28xx *dev, int start);
615 int em28xx_set_outfmt(struct em28xx *dev);
616 int em28xx_resolution_set(struct em28xx *dev);
617 int em28xx_set_alternate(struct em28xx *dev);
618 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
619 int num_bufs, int max_pkt_size,
620 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
621 void em28xx_uninit_isoc(struct em28xx *dev);
622 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
623 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
624 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
625 void em28xx_wake_i2c(struct em28xx *dev);
626 void em28xx_remove_from_devlist(struct em28xx *dev);
627 void em28xx_add_into_devlist(struct em28xx *dev);
628 struct em28xx *em28xx_get_device(int minor,
629 enum v4l2_buf_type *fh_type,
631 int em28xx_register_extension(struct em28xx_ops *dev);
632 void em28xx_unregister_extension(struct em28xx_ops *dev);
633 void em28xx_init_extension(struct em28xx *dev);
634 void em28xx_close_extension(struct em28xx *dev);
636 /* Provided by em28xx-video.c */
637 int em28xx_register_analog_devices(struct em28xx *dev);
638 void em28xx_release_analog_resources(struct em28xx *dev);
640 /* Provided by em28xx-cards.c */
641 extern int em2800_variant_detect(struct usb_device *udev, int model);
642 extern void em28xx_pre_card_setup(struct em28xx *dev);
643 extern void em28xx_card_setup(struct em28xx *dev);
644 extern struct em28xx_board em28xx_boards[];
645 extern struct usb_device_id em28xx_id_table[];
646 extern const unsigned int em28xx_bcount;
647 void em28xx_register_i2c_ir(struct em28xx *dev);
648 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
649 void em28xx_release_resources(struct em28xx *dev);
651 /* Provided by em28xx-input.c */
652 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
653 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
654 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
656 void em28xx_register_snapshot_button(struct em28xx *dev);
657 void em28xx_deregister_snapshot_button(struct em28xx *dev);
659 int em28xx_ir_init(struct em28xx *dev);
660 int em28xx_ir_fini(struct em28xx *dev);
664 #define em28xx_err(fmt, arg...) do {\
665 printk(KERN_ERR fmt , ##arg); } while (0)
667 #define em28xx_errdev(fmt, arg...) do {\
668 printk(KERN_ERR "%s: "fmt,\
669 dev->name , ##arg); } while (0)
671 #define em28xx_info(fmt, arg...) do {\
672 printk(KERN_INFO "%s: "fmt,\
673 dev->name , ##arg); } while (0)
674 #define em28xx_warn(fmt, arg...) do {\
675 printk(KERN_WARNING "%s: "fmt,\
676 dev->name , ##arg); } while (0)
678 static inline int em28xx_compression_disable(struct em28xx *dev)
680 /* side effect of disabling scaler and mixer */
681 return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
684 static inline int em28xx_contrast_get(struct em28xx *dev)
686 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
689 static inline int em28xx_brightness_get(struct em28xx *dev)
691 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
694 static inline int em28xx_saturation_get(struct em28xx *dev)
696 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
699 static inline int em28xx_u_balance_get(struct em28xx *dev)
701 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
704 static inline int em28xx_v_balance_get(struct em28xx *dev)
706 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
709 static inline int em28xx_gamma_get(struct em28xx *dev)
711 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
714 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
717 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
720 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
723 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
726 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
729 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
732 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
735 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
738 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
741 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
744 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
747 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
750 /*FIXME: maxw should be dependent of alt mode */
751 static inline unsigned int norm_maxw(struct em28xx *dev)
753 if (dev->board.max_range_640_480)
759 static inline unsigned int norm_maxh(struct em28xx *dev)
761 if (dev->board.max_range_640_480)
764 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;