2 em28xx-cards.c - 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@brturbo.com.br>
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/videodev.h>
29 #include <linux/i2c.h>
30 #include <media/ir-kbd-i2c.h>
32 /* Boards supported by driver */
34 #define EM2800_BOARD_UNKNOWN 0
35 #define EM2820_BOARD_UNKNOWN 1
36 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
37 #define EM2820_BOARD_PINNACLE_USB_2 3
38 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
39 #define EM2820_BOARD_MSI_VOX_USB_2 5
40 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
41 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
42 #define EM2800_BOARD_KWORLD_USB2800 8
43 #define EM2820_BOARD_PINNACLE_DVC_90 9
47 /* maximum number of em28xx boards */
48 #define EM28XX_MAXBOARDS 1 /*FIXME: should be bigger */
50 /* maximum number of frames that can be queued */
51 #define EM28XX_NUM_FRAMES 5
52 /* number of frames that get used for v4l2_read() */
53 #define EM28XX_NUM_READ_FRAMES 2
55 /* number of buffers for isoc transfers */
56 #define EM28XX_NUM_BUFS 5
58 /* number of packets for each buffer
59 windows requests only 40 packets .. so we better do the same
60 this is what I found out for all alternate numbers there!
62 #define EM28XX_NUM_PACKETS 40
64 /* default alternate; 0 means choose the best */
65 #define EM28XX_PINOUT 0
67 #define EM28XX_INTERLACED_DEFAULT 1
70 #define (use usbview if you want to get the other alternate number infos)
72 #define alternate number 2
73 #define Endpoint Address: 82
90 /* time to wait when stopping the isoc transfer */
91 #define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
93 /* time in msecs to wait for i2c writes to finish */
94 #define EM2800_I2C_WRITE_TIMEOUT 20
96 /* the various frame states */
97 enum em28xx_frame_state
{
106 enum em28xx_stream_state
{
113 struct em28xx_frame_t
{
115 struct v4l2_buffer buf
;
116 enum em28xx_frame_state state
;
117 struct list_head frame
;
118 unsigned long vma_use_count
;
124 enum em28xx_io_method
{
132 #define MAX_EM28XX_INPUT 4
133 enum enum28xx_itype
{
134 EM28XX_VMUX_COMPOSITE1
= 1,
135 EM28XX_VMUX_COMPOSITE2
,
136 EM28XX_VMUX_COMPOSITE3
,
137 EM28XX_VMUX_COMPOSITE4
,
139 EM28XX_VMUX_TELEVISION
,
146 struct em28xx_input
{
147 enum enum28xx_itype type
;
152 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
154 enum em28xx_decoder
{
160 struct em28xx_board
{
167 unsigned int is_em2800
;
168 unsigned int tda9887_conf
;
170 unsigned int has_tuner
:1;
171 unsigned int has_msp34xx
:1;
173 enum em28xx_decoder decoder
;
175 struct em28xx_input input
[MAX_EM28XX_INPUT
];
178 struct em28xx_eeprom
{
179 u32 id
; /* 0x9567eb1a */
187 u16 string1
, string2
, string3
;
193 enum em28xx_dev_state
{
194 DEV_INITIALIZED
= 0x01,
195 DEV_DISCONNECTED
= 0x02,
196 DEV_MISCONFIGURED
= 0x04,
200 struct em28xx_tvnorm
{
203 /* mode for saa7113h */
207 /* main device struct */
209 /* generic device properties */
210 char name
[30]; /* name (including minor) of the device */
211 int model
; /* index in the device_data struct */
212 unsigned int is_em2800
;
213 int video_inputs
; /* number of video inputs */
214 struct list_head devlist
;
215 unsigned int has_tuner
:1;
216 unsigned int has_msp34xx
:1;
217 unsigned int has_tda9887
:1;
219 u32 i2s_speed
; /* I2S speed for audio digital stream */
221 enum em28xx_decoder decoder
;
223 int tuner_type
; /* type of the tuner */
224 int tuner_addr
; /* tuner address */
227 struct i2c_adapter i2c_adap
;
228 struct i2c_client i2c_client
;
229 /* video for linux */
230 int users
; /* user count for exclusive use */
231 struct video_device
*vdev
; /* video for linux device struct */
232 struct video_picture vpic
; /* picture settings only used to init saa7113h */
233 struct em28xx_tvnorm
*tvnorm
; /* selected tv norm */
234 int ctl_freq
; /* selected frequency */
235 unsigned int ctl_input
; /* selected input */
236 unsigned int ctl_ainput
; /* slected audio input */
239 /* frame properties */
240 struct em28xx_frame_t frame
[EM28XX_NUM_FRAMES
]; /* list of frames */
241 int num_frames
; /* number of frames currently in use */
242 unsigned int frame_count
; /* total number of transfered frames */
243 struct em28xx_frame_t
*frame_current
; /* the frame that is being filled */
244 int width
; /* current frame width */
245 int height
; /* current frame height */
246 int frame_size
; /* current frame size */
247 int field_size
; /* current field size */
249 int hscale
; /* horizontal scale factor (see datasheet) */
250 int vscale
; /* vertical scale factor (see datasheet) */
251 int interlaced
; /* 1=interlace fileds, 0=just top fileds */
255 enum em28xx_dev_state state
;
256 enum em28xx_stream_state stream
;
257 enum em28xx_io_method io
;
259 struct semaphore lock
, fileop_lock
;
260 spinlock_t queue_lock
;
261 struct list_head inqueue
, outqueue
;
262 wait_queue_head_t open
, wait_frame
, wait_stream
;
263 struct video_device
*vbi_dev
;
265 unsigned char eedata
[256];
268 struct usb_device
*udev
; /* the usb device */
269 int alt
; /* alternate */
270 int max_pkt_size
; /* max packet size of isoc transaction */
271 int num_alt
; /* Number of alternative settings */
272 unsigned int *alt_max_pkt_size
; /* array of wMaxPacketSize */
273 struct urb
*urb
[EM28XX_NUM_BUFS
]; /* urb for isoc transfers */
274 char *transfer_buffer
[EM28XX_NUM_BUFS
]; /* transfer buffers for isoc transfer */
275 /* helper funcs that call usb_control_msg */
276 int (*em28xx_write_regs
) (struct em28xx
* dev
, u16 reg
, char *buf
,
278 int (*em28xx_read_reg
) (struct em28xx
* dev
, u16 reg
);
279 int (*em28xx_read_reg_req_len
) (struct em28xx
* dev
, u8 req
, u16 reg
,
281 int (*em28xx_write_regs_req
) (struct em28xx
* dev
, u8 req
, u16 reg
,
283 int (*em28xx_read_reg_req
) (struct em28xx
* dev
, u8 req
, u16 reg
);
286 /* Provided by em28xx-i2c.c */
288 void em28xx_i2c_call_clients(struct em28xx
*dev
, unsigned int cmd
, void *arg
);
289 int em28xx_i2c_register(struct em28xx
*dev
);
290 int em28xx_i2c_unregister(struct em28xx
*dev
);
292 /* Provided by em28xx-input.c */
294 void em28xx_set_ir(struct em28xx
* dev
,struct IR_i2c
*ir
);
296 /* Provided by em28xx-core.c */
298 void em28xx_print_ioctl(char *name
, unsigned int cmd
);
300 u32
em28xx_request_buffers(struct em28xx
*dev
, u32 count
);
301 void em28xx_queue_unusedframes(struct em28xx
*dev
);
302 void em28xx_release_buffers(struct em28xx
*dev
);
304 int em28xx_read_reg_req_len(struct em28xx
*dev
, u8 req
, u16 reg
,
306 int em28xx_read_reg_req(struct em28xx
*dev
, u8 req
, u16 reg
);
307 int em28xx_read_reg(struct em28xx
*dev
, u16 reg
);
308 int em28xx_write_regs_req(struct em28xx
*dev
, u8 req
, u16 reg
, char *buf
,
310 int em28xx_write_regs(struct em28xx
*dev
, u16 reg
, char *buf
, int len
);
311 int em28xx_write_reg_bits(struct em28xx
*dev
, u16 reg
, u8 val
,
313 int em28xx_write_ac97(struct em28xx
*dev
, u8 reg
, u8
* val
);
314 int em28xx_audio_analog_set(struct em28xx
*dev
);
315 int em28xx_colorlevels_set_default(struct em28xx
*dev
);
316 int em28xx_capture_start(struct em28xx
*dev
, int start
);
317 int em28xx_outfmt_set_yuv422(struct em28xx
*dev
);
318 int em28xx_accumulator_set(struct em28xx
*dev
, u8 xmin
, u8 xmax
, u8 ymin
,
320 int em28xx_capture_area_set(struct em28xx
*dev
, u8 hstart
, u8 vstart
,
321 u16 width
, u16 height
);
322 int em28xx_scaler_set(struct em28xx
*dev
, u16 h
, u16 v
);
323 int em28xx_resolution_set(struct em28xx
*dev
);
324 void em28xx_isocIrq(struct urb
*urb
, struct pt_regs
*regs
);
325 int em28xx_init_isoc(struct em28xx
*dev
);
326 void em28xx_uninit_isoc(struct em28xx
*dev
);
327 int em28xx_set_alternate(struct em28xx
*dev
);
329 /* Provided by em28xx-cards.c */
330 extern int em2800_variant_detect(struct usb_device
* udev
,int model
);
331 extern void em28xx_card_setup(struct em28xx
*dev
);
332 extern struct em28xx_board em28xx_boards
[];
333 extern struct usb_device_id em28xx_id_table
[];
334 extern const unsigned int em28xx_bcount
;
336 /* em28xx registers */
337 #define CHIPID_REG 0x0a
338 #define USBSUSP_REG 0x0c /* */
340 #define AUDIOSRC_REG 0x0e
341 #define XCLK_REG 0x0f
343 #define VINMODE_REG 0x10
344 #define VINCTRL_REG 0x11
345 #define VINENABLE_REG 0x12 /* */
347 #define GAMMA_REG 0x14
348 #define RGAIN_REG 0x15
349 #define GGAIN_REG 0x16
350 #define BGAIN_REG 0x17
351 #define ROFFSET_REG 0x18
352 #define GOFFSET_REG 0x19
353 #define BOFFSET_REG 0x1a
355 #define OFLOW_REG 0x1b
356 #define HSTART_REG 0x1c
357 #define VSTART_REG 0x1d
358 #define CWIDTH_REG 0x1e
359 #define CHEIGHT_REG 0x1f
361 #define YGAIN_REG 0x20
362 #define YOFFSET_REG 0x21
363 #define UVGAIN_REG 0x22
364 #define UOFFSET_REG 0x23
365 #define VOFFSET_REG 0x24
366 #define SHARPNESS_REG 0x25
368 #define COMPR_REG 0x26
369 #define OUTFMT_REG 0x27
371 #define XMIN_REG 0x28
372 #define XMAX_REG 0x29
373 #define YMIN_REG 0x2a
374 #define YMAX_REG 0x2b
376 #define HSCALELOW_REG 0x30
377 #define HSCALEHIGH_REG 0x31
378 #define VSCALELOW_REG 0x32
379 #define VSCALEHIGH_REG 0x33
381 #define AC97LSB_REG 0x40
382 #define AC97MSB_REG 0x41
383 #define AC97ADDR_REG 0x42
384 #define AC97BUSY_REG 0x43
386 /* em202 registers */
387 #define MASTER_AC97 0x02
388 #define VIDEO_AC97 0x14
390 /* register settings */
391 #define EM28XX_AUDIO_SRC_TUNER 0xc0
392 #define EM28XX_AUDIO_SRC_LINE 0x80
396 #define em28xx_err(fmt, arg...) do {\
397 printk(KERN_ERR fmt , ##arg); } while (0)
399 #define em28xx_errdev(fmt, arg...) do {\
400 printk(KERN_ERR "%s: "fmt,\
401 dev->name , ##arg); } while (0)
403 #define em28xx_info(fmt, arg...) do {\
404 printk(KERN_INFO "%s: "fmt,\
405 dev->name , ##arg); } while (0)
406 #define em28xx_warn(fmt, arg...) do {\
407 printk(KERN_WARNING "%s: "fmt,\
408 dev->name , ##arg); } while (0)
410 inline static int em28xx_audio_source(struct em28xx
*dev
, int input
)
412 return em28xx_write_reg_bits(dev
, AUDIOSRC_REG
, input
, 0xc0);
415 inline static int em28xx_audio_usb_mute(struct em28xx
*dev
, int mute
)
417 return em28xx_write_reg_bits(dev
, XCLK_REG
, mute
? 0x00 : 0x80, 0x80);
420 inline static int em28xx_audio_analog_setup(struct em28xx
*dev
)
422 /* unmute video mixer with default volume level */
423 return em28xx_write_ac97(dev
, VIDEO_AC97
, "\x08\x08");
426 inline static int em28xx_compression_disable(struct em28xx
*dev
)
428 /* side effect of disabling scaler and mixer */
429 return em28xx_write_regs(dev
, COMPR_REG
, "\x00", 1);
432 inline static int em28xx_contrast_get(struct em28xx
*dev
)
434 return em28xx_read_reg(dev
, YGAIN_REG
) & 0x1f;
437 inline static int em28xx_brightness_get(struct em28xx
*dev
)
439 return em28xx_read_reg(dev
, YOFFSET_REG
);
442 inline static int em28xx_saturation_get(struct em28xx
*dev
)
444 return em28xx_read_reg(dev
, UVGAIN_REG
) & 0x1f;
447 inline static int em28xx_u_balance_get(struct em28xx
*dev
)
449 return em28xx_read_reg(dev
, UOFFSET_REG
);
452 inline static int em28xx_v_balance_get(struct em28xx
*dev
)
454 return em28xx_read_reg(dev
, VOFFSET_REG
);
457 inline static int em28xx_gamma_get(struct em28xx
*dev
)
459 return em28xx_read_reg(dev
, GAMMA_REG
) & 0x3f;
462 inline static int em28xx_contrast_set(struct em28xx
*dev
, s32 val
)
465 return em28xx_write_regs(dev
, YGAIN_REG
, &tmp
, 1);
468 inline static int em28xx_brightness_set(struct em28xx
*dev
, s32 val
)
471 return em28xx_write_regs(dev
, YOFFSET_REG
, &tmp
, 1);
474 inline static int em28xx_saturation_set(struct em28xx
*dev
, s32 val
)
477 return em28xx_write_regs(dev
, UVGAIN_REG
, &tmp
, 1);
480 inline static int em28xx_u_balance_set(struct em28xx
*dev
, s32 val
)
483 return em28xx_write_regs(dev
, UOFFSET_REG
, &tmp
, 1);
486 inline static int em28xx_v_balance_set(struct em28xx
*dev
, s32 val
)
489 return em28xx_write_regs(dev
, VOFFSET_REG
, &tmp
, 1);
492 inline static int em28xx_gamma_set(struct em28xx
*dev
, s32 val
)
495 return em28xx_write_regs(dev
, GAMMA_REG
, &tmp
, 1);
498 /*FIXME: maxw should be dependent of alt mode */
499 inline static unsigned int norm_maxw(struct em28xx
*dev
)
502 case (EM2820_BOARD_MSI_VOX_USB_2
): return(640);
503 default: return(720);
507 inline static unsigned int norm_maxh(struct em28xx
*dev
)
510 case (EM2820_BOARD_MSI_VOX_USB_2
): return(480);
511 default: return (dev
->tvnorm
->id
& V4L2_STD_625_50
) ? 576 : 480;