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
109 #define EM2882_BOARD_EVGA_INDTUBE 70
110 #define EM2820_BOARD_SILVERCREST_WEBCAM 71
112 /* Limits minimum and default number of buffers */
113 #define EM28XX_MIN_BUF 4
114 #define EM28XX_DEF_BUF 8
116 /*Limits the max URB message size */
117 #define URB_MAX_CTRL_SIZE 80
119 /* Params for validated field */
120 #define EM28XX_BOARD_NOT_VALIDATED 1
121 #define EM28XX_BOARD_VALIDATED 0
123 /* Params for em28xx_cmd() audio */
124 #define EM28XX_START_AUDIO 1
125 #define EM28XX_STOP_AUDIO 0
127 /* maximum number of em28xx boards */
128 #define EM28XX_MAXBOARDS 4 /*FIXME: should be bigger */
130 /* maximum number of frames that can be queued */
131 #define EM28XX_NUM_FRAMES 5
132 /* number of frames that get used for v4l2_read() */
133 #define EM28XX_NUM_READ_FRAMES 2
135 /* number of buffers for isoc transfers */
136 #define EM28XX_NUM_BUFS 5
138 /* number of packets for each buffer
139 windows requests only 40 packets .. so we better do the same
140 this is what I found out for all alternate numbers there!
142 #define EM28XX_NUM_PACKETS 40
144 /* default alternate; 0 means choose the best */
145 #define EM28XX_PINOUT 0
147 #define EM28XX_INTERLACED_DEFAULT 1
150 #define (use usbview if you want to get the other alternate number infos)
152 #define alternate number 2
153 #define Endpoint Address: 82
157 Max Packet Size: 1448
166 Max Packet Size: 3072
170 /* time to wait when stopping the isoc transfer */
171 #define EM28XX_URB_TIMEOUT \
172 msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
174 /* time in msecs to wait for i2c writes to finish */
175 #define EM2800_I2C_WRITE_TIMEOUT 20
183 enum em28xx_stream_state {
191 struct em28xx_usb_isoc_ctl {
192 /* max packet size of isoc transaction */
195 /* number of allocated urbs */
198 /* urb for isoc transfers */
201 /* transfer buffers for isoc transfer */
202 char **transfer_buffer;
204 /* Last buffer command and region */
206 int pos, size, pktsize;
208 /* Last field: ODD or EVEN? */
211 /* Stores incomplete commands */
215 /* Stores already requested buffers */
216 struct em28xx_buffer *buf;
218 /* Stores the number of received fields */
221 /* isoc urb callback */
222 int (*isoc_copy) (struct em28xx *dev, struct urb *urb);
226 /* Struct to enumberate video formats */
229 u32 fourcc; /* v4l2 format id */
234 /* buffer for one video frame */
235 struct em28xx_buffer {
236 /* common v4l buffer stuff -- must be first */
237 struct videobuf_buffer vb;
239 struct list_head frame;
244 struct em28xx_dmaqueue {
245 struct list_head active;
246 struct list_head queued;
248 wait_queue_head_t wq;
250 /* Counters to control buffer fill */
255 enum em28xx_io_method {
263 #define MAX_EM28XX_INPUT 4
264 enum enum28xx_itype {
265 EM28XX_VMUX_COMPOSITE1 = 1,
266 EM28XX_VMUX_COMPOSITE2,
267 EM28XX_VMUX_COMPOSITE3,
268 EM28XX_VMUX_COMPOSITE4,
270 EM28XX_VMUX_TELEVISION,
277 enum em28xx_ac97_mode {
280 EM28XX_AC97_SIGMATEL,
284 struct em28xx_audio_mode {
285 enum em28xx_ac97_mode ac97;
290 unsigned int has_audio:1;
292 unsigned int i2s_3rates:1;
293 unsigned int i2s_5rates:1;
296 /* em28xx has two audio inputs: tuner and line in.
297 However, on most devices, an auxiliary AC97 codec device is used.
298 The AC97 device may have several different inputs and outputs,
299 depending on their model. So, it is possible to use AC97 mixer to
300 address more than two different entries.
303 /* This is the only entry for em28xx tuner input */
304 EM28XX_AMUX_VIDEO, /* em28xx tuner, AC97 mixer Video */
306 EM28XX_AMUX_LINE_IN, /* AC97 mixer Line In */
308 /* Some less-common mixer setups */
309 EM28XX_AMUX_VIDEO2, /* em28xx Line in, AC97 mixer Video */
319 EM28XX_AOUT_MASTER = 1 << 0,
320 EM28XX_AOUT_LINE = 1 << 1,
321 EM28XX_AOUT_MONO = 1 << 2,
322 EM28XX_AOUT_LFE = 1 << 3,
323 EM28XX_AOUT_SURR = 1 << 4,
325 /* PCM IN Mixer - used by AC97_RECORD_SELECT register */
326 EM28XX_AOUT_PCM_IN = 1 << 7,
328 /* Bits 10-8 are used to indicate the PCM IN record select */
329 EM28XX_AOUT_PCM_MIC_PCM = 0 << 8,
330 EM28XX_AOUT_PCM_CD = 1 << 8,
331 EM28XX_AOUT_PCM_VIDEO = 2 << 8,
332 EM28XX_AOUT_PCM_AUX = 3 << 8,
333 EM28XX_AOUT_PCM_LINE = 4 << 8,
334 EM28XX_AOUT_PCM_STEREO = 5 << 8,
335 EM28XX_AOUT_PCM_MONO = 6 << 8,
336 EM28XX_AOUT_PCM_PHONE = 7 << 8,
339 static inline int ac97_return_record_select(int a_out)
341 return (a_out & 0x700) >> 8;
344 struct em28xx_reg_seq {
346 unsigned char val, mask;
350 struct em28xx_input {
351 enum enum28xx_itype type;
353 enum em28xx_amux amux;
354 enum em28xx_aout aout;
355 struct em28xx_reg_seq *gpio;
358 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
360 enum em28xx_decoder {
361 EM28XX_NODECODER = 0,
371 enum em28xx_adecoder {
372 EM28XX_NOADECODER = 0,
376 struct em28xx_board {
383 unsigned int tda9887_conf;
386 struct em28xx_reg_seq *dvb_gpio;
387 struct em28xx_reg_seq *suspend_gpio;
388 struct em28xx_reg_seq *tuner_gpio;
389 struct em28xx_reg_seq *mute_gpio;
391 unsigned int is_em2800:1;
392 unsigned int has_msp34xx:1;
393 unsigned int mts_firmware:1;
394 unsigned int max_range_640_480:1;
395 unsigned int has_dvb:1;
396 unsigned int has_snapshot_button:1;
397 unsigned int is_webcam:1;
398 unsigned int valid:1;
400 unsigned char xclk, i2c_speed;
401 unsigned char radio_addr;
402 unsigned short tvaudio_addr;
404 enum em28xx_decoder decoder;
405 enum em28xx_adecoder adecoder;
407 struct em28xx_input input[MAX_EM28XX_INPUT];
408 struct em28xx_input radio;
409 IR_KEYTAB_TYPE *ir_codes;
412 struct em28xx_eeprom {
413 u32 id; /* 0x9567eb1a */
421 u16 string1, string2, string3;
427 enum em28xx_dev_state {
428 DEV_INITIALIZED = 0x01,
429 DEV_DISCONNECTED = 0x02,
430 DEV_MISCONFIGURED = 0x04,
433 #define EM28XX_AUDIO_BUFS 5
434 #define EM28XX_NUM_AUDIO_PACKETS 64
435 #define EM28XX_AUDIO_MAX_PACKET_SIZE 196 /* static value */
436 #define EM28XX_CAPTURE_STREAM_EN 1
438 /* em28xx extensions */
439 #define EM28XX_AUDIO 0x10
440 #define EM28XX_DVB 0x20
442 struct em28xx_audio {
444 char *transfer_buffer[EM28XX_AUDIO_BUFS];
445 struct urb *urb[EM28XX_AUDIO_BUFS];
446 struct usb_device *udev;
447 unsigned int capture_transfer_done;
448 struct snd_pcm_substream *capture_pcm_substream;
450 unsigned int hwptr_done_capture;
451 struct snd_card *sndcard;
454 enum em28xx_stream_state capture_stream;
462 unsigned int stream_on:1; /* Locks streams */
465 struct videobuf_queue vb_vidq;
467 enum v4l2_buf_type type;
470 /* main device struct */
472 /* generic device properties */
473 char name[30]; /* name (including minor) of the device */
474 int model; /* index in the device_data struct */
475 int devno; /* marks the number of this device */
476 enum em28xx_chip_id chip_id;
478 struct v4l2_device v4l2_dev;
479 struct em28xx_board board;
481 enum em28xx_sensor em28xx_sensor;
482 int sensor_xres, sensor_yres;
484 unsigned int stream_on:1; /* Locks streams */
485 unsigned int has_audio_class:1;
486 unsigned int has_alsa_audio:1;
488 struct em28xx_fmt *format;
490 struct em28xx_IR *ir;
492 /* Some older em28xx chips needs a waiting time after writing */
493 unsigned int wait_after_write;
495 struct list_head devlist;
497 u32 i2s_speed; /* I2S speed for audio digital stream */
499 struct em28xx_audio_mode audio_mode;
501 int tuner_type; /* type of the tuner */
502 int tuner_addr; /* tuner address */
505 struct i2c_adapter i2c_adap;
506 struct i2c_client i2c_client;
507 /* video for linux */
508 int users; /* user count for exclusive use */
509 struct video_device *vdev; /* video for linux device struct */
510 v4l2_std_id norm; /* selected tv norm */
511 int ctl_freq; /* selected frequency */
512 unsigned int ctl_input; /* selected input */
513 unsigned int ctl_ainput;/* selected audio input */
514 unsigned int ctl_aoutput;/* selected audio output */
517 /* frame properties */
518 int width; /* current frame width */
519 int height; /* current frame height */
520 unsigned hscale; /* horizontal scale factor (see datasheet) */
521 unsigned vscale; /* vertical scale factor (see datasheet) */
522 int interlaced; /* 1=interlace fileds, 0=just top fileds */
523 unsigned int video_bytesread; /* Number of bytes read */
525 unsigned long hash; /* eeprom hash - for boards with generic ID */
526 unsigned long i2c_hash; /* i2c devicelist hash -
527 for boards with generic ID */
529 struct em28xx_audio adev;
532 enum em28xx_dev_state state;
533 enum em28xx_io_method io;
535 struct work_struct request_module_wk;
539 struct mutex ctrl_urb_lock; /* protects urb_buf */
540 /* spinlock_t queue_lock; */
541 struct list_head inqueue, outqueue;
542 wait_queue_head_t open, wait_frame, wait_stream;
543 struct video_device *vbi_dev;
544 struct video_device *radio_dev;
546 unsigned char eedata[256];
548 /* Isoc control struct */
549 struct em28xx_dmaqueue vidq;
550 struct em28xx_usb_isoc_ctl isoc_ctl;
554 struct usb_device *udev; /* the usb device */
555 int alt; /* alternate */
556 int max_pkt_size; /* max packet size of isoc transaction */
557 int num_alt; /* Number of alternative settings */
558 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
559 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
560 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc
562 char urb_buf[URB_MAX_CTRL_SIZE]; /* urb control msg buffer */
564 /* helper funcs that call usb_control_msg */
565 int (*em28xx_write_regs) (struct em28xx *dev, u16 reg,
567 int (*em28xx_read_reg) (struct em28xx *dev, u16 reg);
568 int (*em28xx_read_reg_req_len) (struct em28xx *dev, u8 req, u16 reg,
570 int (*em28xx_write_regs_req) (struct em28xx *dev, u8 req, u16 reg,
572 int (*em28xx_read_reg_req) (struct em28xx *dev, u8 req, u16 reg);
574 enum em28xx_mode mode;
576 /* register numbers for GPO/GPIO registers */
577 u16 reg_gpo_num, reg_gpio_num;
579 /* Caches GPO and GPIO registers */
580 unsigned char reg_gpo, reg_gpio;
582 /* Snapshot button */
583 char snapshot_button_path[30]; /* path of the input dev */
584 struct input_dev *sbutton_input_dev;
585 struct delayed_work sbutton_query_work;
587 struct em28xx_dvb *dvb;
591 struct list_head next;
594 int (*init)(struct em28xx *);
595 int (*fini)(struct em28xx *);
598 /* Provided by em28xx-i2c.c */
599 void em28xx_do_i2c_scan(struct em28xx *dev);
600 int em28xx_i2c_register(struct em28xx *dev);
601 int em28xx_i2c_unregister(struct em28xx *dev);
603 /* Provided by em28xx-core.c */
605 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
606 void em28xx_queue_unusedframes(struct em28xx *dev);
607 void em28xx_release_buffers(struct em28xx *dev);
609 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
611 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
612 int em28xx_read_reg(struct em28xx *dev, u16 reg);
613 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
615 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
616 int em28xx_write_reg(struct em28xx *dev, u16 reg, u8 val);
618 int em28xx_read_ac97(struct em28xx *dev, u8 reg);
619 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u16 val);
621 int em28xx_audio_analog_set(struct em28xx *dev);
622 int em28xx_audio_setup(struct em28xx *dev);
624 int em28xx_colorlevels_set_default(struct em28xx *dev);
625 int em28xx_capture_start(struct em28xx *dev, int start);
626 int em28xx_set_outfmt(struct em28xx *dev);
627 int em28xx_resolution_set(struct em28xx *dev);
628 int em28xx_set_alternate(struct em28xx *dev);
629 int em28xx_init_isoc(struct em28xx *dev, int max_packets,
630 int num_bufs, int max_pkt_size,
631 int (*isoc_copy) (struct em28xx *dev, struct urb *urb));
632 void em28xx_uninit_isoc(struct em28xx *dev);
633 int em28xx_isoc_dvb_max_packetsize(struct em28xx *dev);
634 int em28xx_set_mode(struct em28xx *dev, enum em28xx_mode set_mode);
635 int em28xx_gpio_set(struct em28xx *dev, struct em28xx_reg_seq *gpio);
636 void em28xx_wake_i2c(struct em28xx *dev);
637 void em28xx_remove_from_devlist(struct em28xx *dev);
638 void em28xx_add_into_devlist(struct em28xx *dev);
639 struct em28xx *em28xx_get_device(int minor,
640 enum v4l2_buf_type *fh_type,
642 int em28xx_register_extension(struct em28xx_ops *dev);
643 void em28xx_unregister_extension(struct em28xx_ops *dev);
644 void em28xx_init_extension(struct em28xx *dev);
645 void em28xx_close_extension(struct em28xx *dev);
647 /* Provided by em28xx-video.c */
648 int em28xx_register_analog_devices(struct em28xx *dev);
649 void em28xx_release_analog_resources(struct em28xx *dev);
651 /* Provided by em28xx-cards.c */
652 extern int em2800_variant_detect(struct usb_device *udev, int model);
653 extern void em28xx_pre_card_setup(struct em28xx *dev);
654 extern void em28xx_card_setup(struct em28xx *dev);
655 extern struct em28xx_board em28xx_boards[];
656 extern struct usb_device_id em28xx_id_table[];
657 extern const unsigned int em28xx_bcount;
658 void em28xx_register_i2c_ir(struct em28xx *dev);
659 int em28xx_tuner_callback(void *ptr, int component, int command, int arg);
660 void em28xx_release_resources(struct em28xx *dev);
662 /* Provided by em28xx-input.c */
663 int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
664 int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw);
665 int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key,
667 void em28xx_register_snapshot_button(struct em28xx *dev);
668 void em28xx_deregister_snapshot_button(struct em28xx *dev);
670 int em28xx_ir_init(struct em28xx *dev);
671 int em28xx_ir_fini(struct em28xx *dev);
675 #define em28xx_err(fmt, arg...) do {\
676 printk(KERN_ERR fmt , ##arg); } while (0)
678 #define em28xx_errdev(fmt, arg...) do {\
679 printk(KERN_ERR "%s: "fmt,\
680 dev->name , ##arg); } while (0)
682 #define em28xx_info(fmt, arg...) do {\
683 printk(KERN_INFO "%s: "fmt,\
684 dev->name , ##arg); } while (0)
685 #define em28xx_warn(fmt, arg...) do {\
686 printk(KERN_WARNING "%s: "fmt,\
687 dev->name , ##arg); } while (0)
689 static inline int em28xx_compression_disable(struct em28xx *dev)
691 /* side effect of disabling scaler and mixer */
692 return em28xx_write_reg(dev, EM28XX_R26_COMPR, 0x00);
695 static inline int em28xx_contrast_get(struct em28xx *dev)
697 return em28xx_read_reg(dev, EM28XX_R20_YGAIN) & 0x1f;
700 static inline int em28xx_brightness_get(struct em28xx *dev)
702 return em28xx_read_reg(dev, EM28XX_R21_YOFFSET);
705 static inline int em28xx_saturation_get(struct em28xx *dev)
707 return em28xx_read_reg(dev, EM28XX_R22_UVGAIN) & 0x1f;
710 static inline int em28xx_u_balance_get(struct em28xx *dev)
712 return em28xx_read_reg(dev, EM28XX_R23_UOFFSET);
715 static inline int em28xx_v_balance_get(struct em28xx *dev)
717 return em28xx_read_reg(dev, EM28XX_R24_VOFFSET);
720 static inline int em28xx_gamma_get(struct em28xx *dev)
722 return em28xx_read_reg(dev, EM28XX_R14_GAMMA) & 0x3f;
725 static inline int em28xx_contrast_set(struct em28xx *dev, s32 val)
728 return em28xx_write_regs(dev, EM28XX_R20_YGAIN, &tmp, 1);
731 static inline int em28xx_brightness_set(struct em28xx *dev, s32 val)
734 return em28xx_write_regs(dev, EM28XX_R21_YOFFSET, &tmp, 1);
737 static inline int em28xx_saturation_set(struct em28xx *dev, s32 val)
740 return em28xx_write_regs(dev, EM28XX_R22_UVGAIN, &tmp, 1);
743 static inline int em28xx_u_balance_set(struct em28xx *dev, s32 val)
746 return em28xx_write_regs(dev, EM28XX_R23_UOFFSET, &tmp, 1);
749 static inline int em28xx_v_balance_set(struct em28xx *dev, s32 val)
752 return em28xx_write_regs(dev, EM28XX_R24_VOFFSET, &tmp, 1);
755 static inline int em28xx_gamma_set(struct em28xx *dev, s32 val)
758 return em28xx_write_regs(dev, EM28XX_R14_GAMMA, &tmp, 1);
761 /*FIXME: maxw should be dependent of alt mode */
762 static inline unsigned int norm_maxw(struct em28xx *dev)
764 if (dev->board.is_webcam)
765 return dev->sensor_xres;
767 if (dev->board.max_range_640_480)
773 static inline unsigned int norm_maxh(struct em28xx *dev)
775 if (dev->board.is_webcam)
776 return dev->sensor_yres;
778 if (dev->board.max_range_640_480)
781 return (dev->norm & V4L2_STD_625_50) ? 576 : 480;