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@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 u32 em28xx_request_buffers(struct em28xx *dev, u32 count);
299 void em28xx_queue_unusedframes(struct em28xx *dev);
300 void em28xx_release_buffers(struct em28xx *dev);
302 int em28xx_read_reg_req_len(struct em28xx *dev, u8 req, u16 reg,
304 int em28xx_read_reg_req(struct em28xx *dev, u8 req, u16 reg);
305 int em28xx_read_reg(struct em28xx *dev, u16 reg);
306 int em28xx_write_regs_req(struct em28xx *dev, u8 req, u16 reg, char *buf,
308 int em28xx_write_regs(struct em28xx *dev, u16 reg, char *buf, int len);
309 int em28xx_write_reg_bits(struct em28xx *dev, u16 reg, u8 val,
311 int em28xx_write_ac97(struct em28xx *dev, u8 reg, u8 * val);
312 int em28xx_audio_analog_set(struct em28xx *dev);
313 int em28xx_colorlevels_set_default(struct em28xx *dev);
314 int em28xx_capture_start(struct em28xx *dev, int start);
315 int em28xx_outfmt_set_yuv422(struct em28xx *dev);
316 int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, u8 ymin,
318 int em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart,
319 u16 width, u16 height);
320 int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v);
321 int em28xx_resolution_set(struct em28xx *dev);
322 void em28xx_isocIrq(struct urb *urb, struct pt_regs *regs);
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_card_setup(struct em28xx *dev);
330 extern struct em28xx_board em28xx_boards[];
331 extern struct usb_device_id em28xx_id_table[];
332 extern const unsigned int em28xx_bcount;
334 /* em28xx registers */
335 #define CHIPID_REG 0x0a
336 #define USBSUSP_REG 0x0c /* */
338 #define AUDIOSRC_REG 0x0e
339 #define XCLK_REG 0x0f
341 #define VINMODE_REG 0x10
342 #define VINCTRL_REG 0x11
343 #define VINENABLE_REG 0x12 /* */
345 #define GAMMA_REG 0x14
346 #define RGAIN_REG 0x15
347 #define GGAIN_REG 0x16
348 #define BGAIN_REG 0x17
349 #define ROFFSET_REG 0x18
350 #define GOFFSET_REG 0x19
351 #define BOFFSET_REG 0x1a
353 #define OFLOW_REG 0x1b
354 #define HSTART_REG 0x1c
355 #define VSTART_REG 0x1d
356 #define CWIDTH_REG 0x1e
357 #define CHEIGHT_REG 0x1f
359 #define YGAIN_REG 0x20
360 #define YOFFSET_REG 0x21
361 #define UVGAIN_REG 0x22
362 #define UOFFSET_REG 0x23
363 #define VOFFSET_REG 0x24
364 #define SHARPNESS_REG 0x25
366 #define COMPR_REG 0x26
367 #define OUTFMT_REG 0x27
369 #define XMIN_REG 0x28
370 #define XMAX_REG 0x29
371 #define YMIN_REG 0x2a
372 #define YMAX_REG 0x2b
374 #define HSCALELOW_REG 0x30
375 #define HSCALEHIGH_REG 0x31
376 #define VSCALELOW_REG 0x32
377 #define VSCALEHIGH_REG 0x33
379 #define AC97LSB_REG 0x40
380 #define AC97MSB_REG 0x41
381 #define AC97ADDR_REG 0x42
382 #define AC97BUSY_REG 0x43
384 /* em202 registers */
385 #define MASTER_AC97 0x02
386 #define VIDEO_AC97 0x14
388 /* register settings */
389 #define EM28XX_AUDIO_SRC_TUNER 0xc0
390 #define EM28XX_AUDIO_SRC_LINE 0x80
394 #define em28xx_err(fmt, arg...) do {\
395 printk(KERN_ERR fmt , ##arg); } while (0)
397 #define em28xx_errdev(fmt, arg...) do {\
398 printk(KERN_ERR "%s: "fmt,\
399 dev->name , ##arg); } while (0)
401 #define em28xx_info(fmt, arg...) do {\
402 printk(KERN_INFO "%s: "fmt,\
403 dev->name , ##arg); } while (0)
404 #define em28xx_warn(fmt, arg...) do {\
405 printk(KERN_WARNING "%s: "fmt,\
406 dev->name , ##arg); } while (0)
408 inline static int em28xx_audio_source(struct em28xx *dev, int input)
410 return em28xx_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
413 inline static int em28xx_audio_usb_mute(struct em28xx *dev, int mute)
415 return em28xx_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
418 inline static int em28xx_audio_analog_setup(struct em28xx *dev)
420 /* unmute video mixer with default volume level */
421 return em28xx_write_ac97(dev, VIDEO_AC97, "\x08\x08");
424 inline static int em28xx_compression_disable(struct em28xx *dev)
426 /* side effect of disabling scaler and mixer */
427 return em28xx_write_regs(dev, COMPR_REG, "\x00", 1);
430 inline static int em28xx_contrast_get(struct em28xx *dev)
432 return em28xx_read_reg(dev, YGAIN_REG) & 0x1f;
435 inline static int em28xx_brightness_get(struct em28xx *dev)
437 return em28xx_read_reg(dev, YOFFSET_REG);
440 inline static int em28xx_saturation_get(struct em28xx *dev)
442 return em28xx_read_reg(dev, UVGAIN_REG) & 0x1f;
445 inline static int em28xx_u_balance_get(struct em28xx *dev)
447 return em28xx_read_reg(dev, UOFFSET_REG);
450 inline static int em28xx_v_balance_get(struct em28xx *dev)
452 return em28xx_read_reg(dev, VOFFSET_REG);
455 inline static int em28xx_gamma_get(struct em28xx *dev)
457 return em28xx_read_reg(dev, GAMMA_REG) & 0x3f;
460 inline static int em28xx_contrast_set(struct em28xx *dev, s32 val)
463 return em28xx_write_regs(dev, YGAIN_REG, &tmp, 1);
466 inline static int em28xx_brightness_set(struct em28xx *dev, s32 val)
469 return em28xx_write_regs(dev, YOFFSET_REG, &tmp, 1);
472 inline static int em28xx_saturation_set(struct em28xx *dev, s32 val)
475 return em28xx_write_regs(dev, UVGAIN_REG, &tmp, 1);
478 inline static int em28xx_u_balance_set(struct em28xx *dev, s32 val)
481 return em28xx_write_regs(dev, UOFFSET_REG, &tmp, 1);
484 inline static int em28xx_v_balance_set(struct em28xx *dev, s32 val)
487 return em28xx_write_regs(dev, VOFFSET_REG, &tmp, 1);
490 inline static int em28xx_gamma_set(struct em28xx *dev, s32 val)
493 return em28xx_write_regs(dev, GAMMA_REG, &tmp, 1);
496 /*FIXME: maxw should be dependent of alt mode */
497 inline static unsigned int norm_maxw(struct em28xx *dev)
500 case (EM2820_BOARD_MSI_VOX_USB_2): return(640);
501 default: return(720);
505 inline static unsigned int norm_maxh(struct em28xx *dev)
508 case (EM2820_BOARD_MSI_VOX_USB_2): return(480);
509 default: return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;