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/videodev.h>
29 #include <linux/i2c.h>
30 #include <linux/mutex.h>
31 #include <media/ir-kbd-i2c.h>
33 /* Boards supported by driver */
35 #define EM2800_BOARD_UNKNOWN 0
36 #define EM2820_BOARD_UNKNOWN 1
37 #define EM2820_BOARD_TERRATEC_CINERGY_250 2
38 #define EM2820_BOARD_PINNACLE_USB_2 3
39 #define EM2820_BOARD_HAUPPAUGE_WINTV_USB_2 4
40 #define EM2820_BOARD_MSI_VOX_USB_2 5
41 #define EM2800_BOARD_TERRATEC_CINERGY_200 6
42 #define EM2800_BOARD_LEADTEK_WINFAST_USBII 7
43 #define EM2800_BOARD_KWORLD_USB2800 8
44 #define EM2820_BOARD_PINNACLE_DVC_90 9
45 #define EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900 10
46 #define EM2880_BOARD_TERRATEC_HYBRID_XS 11
47 #define EM2820_BOARD_KWORLD_PVRTV2800RF 12
48 #define EM2880_BOARD_TERRATEC_PRODIGY_XS 13
52 /* maximum number of em28xx boards */
53 #define EM28XX_MAXBOARDS 1 /*FIXME: should be bigger */
55 /* maximum number of frames that can be queued */
56 #define EM28XX_NUM_FRAMES 5
57 /* number of frames that get used for v4l2_read() */
58 #define EM28XX_NUM_READ_FRAMES 2
60 /* number of buffers for isoc transfers */
61 #define EM28XX_NUM_BUFS 5
63 /* number of packets for each buffer
64 windows requests only 40 packets .. so we better do the same
65 this is what I found out for all alternate numbers there!
67 #define EM28XX_NUM_PACKETS 40
69 /* default alternate; 0 means choose the best */
70 #define EM28XX_PINOUT 0
72 #define EM28XX_INTERLACED_DEFAULT 1
75 #define (use usbview if you want to get the other alternate number infos)
77 #define alternate number 2
78 #define Endpoint Address: 82
95 /* time to wait when stopping the isoc transfer */
96 #define EM28XX_URB_TIMEOUT msecs_to_jiffies(EM28XX_NUM_BUFS * EM28XX_NUM_PACKETS)
98 /* time in msecs to wait for i2c writes to finish */
99 #define EM2800_I2C_WRITE_TIMEOUT 20
101 /* the various frame states */
102 enum em28xx_frame_state {
111 enum em28xx_stream_state {
118 struct em28xx_frame_t {
120 struct v4l2_buffer buf;
121 enum em28xx_frame_state state;
122 struct list_head frame;
123 unsigned long vma_use_count;
129 enum em28xx_io_method {
137 #define MAX_EM28XX_INPUT 4
138 enum enum28xx_itype {
139 EM28XX_VMUX_COMPOSITE1 = 1,
140 EM28XX_VMUX_COMPOSITE2,
141 EM28XX_VMUX_COMPOSITE3,
142 EM28XX_VMUX_COMPOSITE4,
144 EM28XX_VMUX_TELEVISION,
151 struct em28xx_input {
152 enum enum28xx_itype type;
157 #define INPUT(nr) (&em28xx_boards[dev->model].input[nr])
159 enum em28xx_decoder {
165 struct em28xx_board {
172 unsigned int is_em2800;
173 unsigned int tda9887_conf;
175 unsigned int has_tuner:1;
176 unsigned int has_msp34xx:1;
178 enum em28xx_decoder decoder;
180 struct em28xx_input input[MAX_EM28XX_INPUT];
183 struct em28xx_eeprom {
184 u32 id; /* 0x9567eb1a */
192 u16 string1, string2, string3;
198 enum em28xx_dev_state {
199 DEV_INITIALIZED = 0x01,
200 DEV_DISCONNECTED = 0x02,
201 DEV_MISCONFIGURED = 0x04,
205 struct em28xx_tvnorm {
208 /* mode for saa7113h */
212 /* main device struct */
214 /* generic device properties */
215 char name[30]; /* name (including minor) of the device */
216 int model; /* index in the device_data struct */
217 int devno; /* marks the number of this device */
218 unsigned int is_em2800;
219 int video_inputs; /* number of video inputs */
220 struct list_head devlist;
221 unsigned int has_tuner:1;
222 unsigned int has_msp34xx:1;
223 unsigned int has_tda9887:1;
225 u32 i2s_speed; /* I2S speed for audio digital stream */
227 enum em28xx_decoder decoder;
229 int tuner_type; /* type of the tuner */
230 int tuner_addr; /* tuner address */
233 struct i2c_adapter i2c_adap;
234 struct i2c_client i2c_client;
235 /* video for linux */
236 int users; /* user count for exclusive use */
237 struct video_device *vdev; /* video for linux device struct */
238 struct video_picture vpic; /* picture settings only used to init saa7113h */
239 struct em28xx_tvnorm *tvnorm; /* selected tv norm */
240 int ctl_freq; /* selected frequency */
241 unsigned int ctl_input; /* selected input */
242 unsigned int ctl_ainput; /* slected audio input */
245 /* frame properties */
246 struct em28xx_frame_t frame[EM28XX_NUM_FRAMES]; /* list of frames */
247 int num_frames; /* number of frames currently in use */
248 unsigned int frame_count; /* total number of transfered frames */
249 struct em28xx_frame_t *frame_current; /* the frame that is being filled */
250 int width; /* current frame width */
251 int height; /* current frame height */
252 int frame_size; /* current frame size */
253 int field_size; /* current field size */
255 int hscale; /* horizontal scale factor (see datasheet) */
256 int vscale; /* vertical scale factor (see datasheet) */
257 int interlaced; /* 1=interlace fileds, 0=just top fileds */
261 enum em28xx_dev_state state;
262 enum em28xx_stream_state stream;
263 enum em28xx_io_method io;
265 struct mutex lock, fileop_lock;
266 spinlock_t queue_lock;
267 struct list_head inqueue, outqueue;
268 wait_queue_head_t open, wait_frame, wait_stream;
269 struct video_device *vbi_dev;
271 unsigned char eedata[256];
274 struct usb_device *udev; /* the usb device */
275 int alt; /* alternate */
276 int max_pkt_size; /* max packet size of isoc transaction */
277 int num_alt; /* Number of alternative settings */
278 unsigned int *alt_max_pkt_size; /* array of wMaxPacketSize */
279 struct urb *urb[EM28XX_NUM_BUFS]; /* urb for isoc transfers */
280 char *transfer_buffer[EM28XX_NUM_BUFS]; /* transfer buffers for isoc transfer */
281 /* helper funcs that call usb_control_msg */
282 int (*em28xx_write_regs) (struct em28xx * dev, u16 reg, char *buf,
284 int (*em28xx_read_reg) (struct em28xx * dev, u16 reg);
285 int (*em28xx_read_reg_req_len) (struct em28xx * dev, u8 req, u16 reg,
287 int (*em28xx_write_regs_req) (struct em28xx * dev, u8 req, u16 reg,
289 int (*em28xx_read_reg_req) (struct em28xx * dev, u8 req, u16 reg);
292 /* Provided by em28xx-i2c.c */
294 void em28xx_i2c_call_clients(struct em28xx *dev, unsigned int cmd, void *arg);
295 int em28xx_i2c_register(struct em28xx *dev);
296 int em28xx_i2c_unregister(struct em28xx *dev);
298 /* Provided by em28xx-input.c */
300 void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir);
302 /* Provided by em28xx-core.c */
304 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
305 void em28xx_queue_unusedframes(struct em28xx *dev);
306 void em28xx_release_buffers(struct em28xx *dev);
308 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
310 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
311 int em28xx_read_reg(struct em28xx *dev, u16 reg);
312 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
314 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
315 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
317 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u8 * val);
318 int em28xx_audio_analog_set(struct em28xx *dev);
319 int em28xx_colorlevels_set_default(struct em28xx *dev);
320 int em28xx_capture_start(struct em28xx *dev, int start);
321 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
322 int em28xx_resolution_set(struct em28xx *dev);
323 int em28xx_init_isoc(struct em28xx *dev);
324 void em28xx_uninit_isoc(struct em28xx *dev);
325 int em28xx_set_alternate(struct em28xx *dev);
327 /* Provided by em28xx-cards.c */
328 extern int em2800_variant_detect(struct usb_device* udev,int model);
329 extern void em28xx_pre_card_setup(struct em28xx *dev);
330 extern void em28xx_card_setup(struct em28xx *dev);
331 extern struct em28xx_board em28xx_boards[];
332 extern struct usb_device_id em28xx_id_table[];
333 extern const unsigned int em28xx_bcount;
335 /* em28xx registers */
336 #define CHIPID_REG 0x0a
337 #define USBSUSP_REG 0x0c /* */
339 #define AUDIOSRC_REG 0x0e
340 #define XCLK_REG 0x0f
342 #define VINMODE_REG 0x10
343 #define VINCTRL_REG 0x11
344 #define VINENABLE_REG 0x12 /* */
346 #define GAMMA_REG 0x14
347 #define RGAIN_REG 0x15
348 #define GGAIN_REG 0x16
349 #define BGAIN_REG 0x17
350 #define ROFFSET_REG 0x18
351 #define GOFFSET_REG 0x19
352 #define BOFFSET_REG 0x1a
354 #define OFLOW_REG 0x1b
355 #define HSTART_REG 0x1c
356 #define VSTART_REG 0x1d
357 #define CWIDTH_REG 0x1e
358 #define CHEIGHT_REG 0x1f
360 #define YGAIN_REG 0x20
361 #define YOFFSET_REG 0x21
362 #define UVGAIN_REG 0x22
363 #define UOFFSET_REG 0x23
364 #define VOFFSET_REG 0x24
365 #define SHARPNESS_REG 0x25
367 #define COMPR_REG 0x26
368 #define OUTFMT_REG 0x27
370 #define XMIN_REG 0x28
371 #define XMAX_REG 0x29
372 #define YMIN_REG 0x2a
373 #define YMAX_REG 0x2b
375 #define HSCALELOW_REG 0x30
376 #define HSCALEHIGH_REG 0x31
377 #define VSCALELOW_REG 0x32
378 #define VSCALEHIGH_REG 0x33
380 #define AC97LSB_REG 0x40
381 #define AC97MSB_REG 0x41
382 #define AC97ADDR_REG 0x42
383 #define AC97BUSY_REG 0x43
385 /* em202 registers */
386 #define MASTER_AC97 0x02
387 #define VIDEO_AC97 0x14
389 /* register settings */
390 #define EM28XX_AUDIO_SRC_TUNER 0xc0
391 #define EM28XX_AUDIO_SRC_LINE 0x80
395 #define em28xx_err(fmt, arg...) do {\
396 printk(KERN_ERR fmt , ##arg); } while (0)
398 #define em28xx_errdev(fmt, arg...) do {\
399 printk(KERN_ERR "%s: "fmt,\
400 dev->name , ##arg); } while (0)
402 #define em28xx_info(fmt, arg...) do {\
403 printk(KERN_INFO "%s: "fmt,\
404 dev->name , ##arg); } while (0)
405 #define em28xx_warn(fmt, arg...) do {\
406 printk(KERN_WARNING "%s: "fmt,\
407 dev->name , ##arg); } while (0)
409 inline static int em28xx_audio_source(struct em28xx *dev, int input)
411 return em28xx_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
414 inline static int em28xx_audio_usb_mute(struct em28xx *dev, int mute)
416 return em28xx_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
419 inline static int em28xx_audio_analog_setup(struct em28xx *dev)
421 /* unmute video mixer with default volume level */
422 return em28xx_write_ac97(dev, VIDEO_AC97, "\x08\x08");
425 inline static int em28xx_compression_disable(struct em28xx *dev)
427 /* side effect of disabling scaler and mixer */
428 return em28xx_write_regs(dev, COMPR_REG, "\x00", 1);
431 inline static int em28xx_contrast_get(struct em28xx *dev)
433 return em28xx_read_reg(dev, YGAIN_REG) & 0x1f;
436 inline static int em28xx_brightness_get(struct em28xx *dev)
438 return em28xx_read_reg(dev, YOFFSET_REG);
441 inline static int em28xx_saturation_get(struct em28xx *dev)
443 return em28xx_read_reg(dev, UVGAIN_REG) & 0x1f;
446 inline static int em28xx_u_balance_get(struct em28xx *dev)
448 return em28xx_read_reg(dev, UOFFSET_REG);
451 inline static int em28xx_v_balance_get(struct em28xx *dev)
453 return em28xx_read_reg(dev, VOFFSET_REG);
456 inline static int em28xx_gamma_get(struct em28xx *dev)
458 return em28xx_read_reg(dev, GAMMA_REG) & 0x3f;
461 inline static int em28xx_contrast_set(struct em28xx *dev, s32 val)
464 return em28xx_write_regs(dev, YGAIN_REG, &tmp, 1);
467 inline static int em28xx_brightness_set(struct em28xx *dev, s32 val)
470 return em28xx_write_regs(dev, YOFFSET_REG, &tmp, 1);
473 inline static int em28xx_saturation_set(struct em28xx *dev, s32 val)
476 return em28xx_write_regs(dev, UVGAIN_REG, &tmp, 1);
479 inline static int em28xx_u_balance_set(struct em28xx *dev, s32 val)
482 return em28xx_write_regs(dev, UOFFSET_REG, &tmp, 1);
485 inline static int em28xx_v_balance_set(struct em28xx *dev, s32 val)
488 return em28xx_write_regs(dev, VOFFSET_REG, &tmp, 1);
491 inline static int em28xx_gamma_set(struct em28xx *dev, s32 val)
494 return em28xx_write_regs(dev, GAMMA_REG, &tmp, 1);
497 /*FIXME: maxw should be dependent of alt mode */
498 inline static unsigned int norm_maxw(struct em28xx *dev)
501 case (EM2820_BOARD_MSI_VOX_USB_2): return(640);
502 default: return(720);
506 inline static unsigned int norm_maxh(struct em28xx *dev)
509 case (EM2820_BOARD_MSI_VOX_USB_2): return(480);
510 default: return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;