2 em2820-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
46 /* maximum number of em28xx boards */
47 #define EM2820_MAXBOARDS 1 /*FIXME: should be bigger */
49 /* maximum number of frames that can be queued */
50 #define EM2820_NUM_FRAMES 5
51 /* number of frames that get used for v4l2_read() */
52 #define EM2820_NUM_READ_FRAMES 2
54 /* number of buffers for isoc transfers */
55 #define EM2820_NUM_BUFS 5
57 /* number of packets for each buffer
58 windows requests only 40 packets .. so we better do the same
59 this is what I found out for all alternate numbers there!
61 #define EM2820_NUM_PACKETS 40
63 /* default alternate; 0 means choose the best */
64 #define EM2820_PINOUT 0
65 #define EM2820_MAX_ALT 7
67 #define EM2820_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 EM2820_URB_TIMEOUT msecs_to_jiffies(EM2820_NUM_BUFS * EM2820_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 em2820_frame_state {
106 enum em2820_stream_state {
113 struct em2820_frame_t {
115 struct v4l2_buffer buf;
116 enum em2820_frame_state state;
117 struct list_head frame;
118 unsigned long vma_use_count;
124 enum em2820_io_method {
132 #define MAX_EM2820_INPUT 4
133 enum enum2820_itype {
134 EM2820_VMUX_COMPOSITE1 = 1,
135 EM2820_VMUX_COMPOSITE2,
136 EM2820_VMUX_COMPOSITE3,
137 EM2820_VMUX_COMPOSITE4,
139 EM2820_VMUX_TELEVISION,
146 struct em2820_input {
147 enum enum2820_itype type;
152 #define INPUT(nr) (&em2820_boards[dev->model].input[nr])
154 enum em2820_decoder {
160 struct em2820_board {
162 unsigned char chip_id;
168 unsigned int is_em2800;
169 unsigned int tda9887_conf;
171 unsigned int has_tuner:1;
172 unsigned int has_msp34xx:1;
174 enum em2820_decoder decoder;
176 struct em2820_input input[MAX_EM2820_INPUT];
179 struct em2820_eeprom {
180 u32 id; /* 0x9567eb1a */
188 u16 string1, string2, string3;
194 enum em2820_dev_state {
195 DEV_INITIALIZED = 0x01,
196 DEV_DISCONNECTED = 0x02,
197 DEV_MISCONFIGURED = 0x04,
201 struct em2820_tvnorm {
204 /* mode for saa7113h */
208 /* main device struct */
210 /* generic device properties */
211 char name[30]; /* name (including minor) of the device */
212 int model; /* index in the device_data struct */
213 unsigned int is_em2800;
214 int video_inputs; /* number of video inputs */
215 unsigned int has_tuner:1;
216 unsigned int has_msp34xx:1;
217 unsigned int has_tda9887:1;
219 enum em2820_decoder decoder;
221 int tuner_type; /* type of the tuner */
222 int tuner_addr; /* tuner address */
225 struct i2c_adapter i2c_adap;
226 struct i2c_client i2c_client;
227 /* video for linux */
228 int users; /* user count for exclusive use */
229 struct video_device *vdev; /* video for linux device struct */
230 struct video_picture vpic; /* picture settings only used to init saa7113h */
231 struct em2820_tvnorm *tvnorm; /* selected tv norm */
232 int ctl_freq; /* selected frequency */
233 unsigned int ctl_input; /* selected input */
234 unsigned int ctl_ainput; /* slected audio input */
237 /* frame properties */
238 struct em2820_frame_t frame[EM2820_NUM_FRAMES]; /* list of frames */
239 int num_frames; /* number of frames currently in use */
240 unsigned int frame_count; /* total number of transfered frames */
241 struct em2820_frame_t *frame_current; /* the frame that is being filled */
242 int width; /* current frame width */
243 int height; /* current frame height */
244 int frame_size; /* current frame size */
245 int field_size; /* current field size */
247 int hscale; /* horizontal scale factor (see datasheet) */
248 int vscale; /* vertical scale factor (see datasheet) */
249 int interlaced; /* 1=interlace fileds, 0=just top fileds */
253 enum em2820_dev_state state;
254 enum em2820_stream_state stream;
255 enum em2820_io_method io;
257 struct semaphore lock, fileop_lock;
258 spinlock_t queue_lock;
259 struct list_head inqueue, outqueue;
260 wait_queue_head_t open, wait_frame, wait_stream;
261 struct video_device *vbi_dev;
263 unsigned char eedata[256];
266 struct usb_device *udev; /* the usb device */
267 int alt; /* alternate */
268 int max_pkt_size; /* max packet size of isoc transaction */
269 unsigned int alt_max_pkt_size[EM2820_MAX_ALT + 1]; /* array of wMaxPacketSize */
270 struct urb *urb[EM2820_NUM_BUFS]; /* urb for isoc transfers */
271 char *transfer_buffer[EM2820_NUM_BUFS]; /* transfer buffers for isoc transfer */
272 /* helper funcs that call usb_control_msg */
273 int (*em2820_write_regs) (struct em2820 * dev, u16 reg, char *buf,
275 int (*em2820_read_reg) (struct em2820 * dev, u16 reg);
276 int (*em2820_read_reg_req_len) (struct em2820 * dev, u8 req, u16 reg,
278 int (*em2820_write_regs_req) (struct em2820 * dev, u8 req, u16 reg,
280 int (*em2820_read_reg_req) (struct em2820 * dev, u8 req, u16 reg);
283 /* Provided by em2820-i2c.c */
285 void em2820_i2c_call_clients(struct em2820 *dev, unsigned int cmd, void *arg);
286 int em2820_i2c_register(struct em2820 *dev);
287 int em2820_i2c_unregister(struct em2820 *dev);
289 /* Provided by em2820-input.c */
291 void em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir);
293 /* Provided by em2820-core.c */
295 void em2820_print_ioctl(char *name, unsigned int cmd);
297 u32 em2820_request_buffers(struct em2820 *dev, u32 count);
298 void em2820_queue_unusedframes(struct em2820 *dev);
299 void em2820_release_buffers(struct em2820 *dev);
301 int em2820_read_reg_req_len(struct em2820 *dev, u8 req, u16 reg,
303 int em2820_read_reg_req(struct em2820 *dev, u8 req, u16 reg);
304 int em2820_read_reg(struct em2820 *dev, u16 reg);
305 int em2820_write_regs_req(struct em2820 *dev, u8 req, u16 reg, char *buf,
307 int em2820_write_regs(struct em2820 *dev, u16 reg, char *buf, int len);
308 int em2820_write_reg_bits(struct em2820 *dev, u16 reg, u8 val,
310 int em2820_write_ac97(struct em2820 *dev, u8 reg, u8 * val);
311 int em2820_audio_analog_set(struct em2820 *dev);
312 int em2820_colorlevels_set_default(struct em2820 *dev);
313 int em2820_capture_start(struct em2820 *dev, int start);
314 int em2820_outfmt_set_yuv422(struct em2820 *dev);
315 int em2820_accumulator_set(struct em2820 *dev, u8 xmin, u8 xmax, u8 ymin,
317 int em2820_capture_area_set(struct em2820 *dev, u8 hstart, u8 vstart,
318 u16 width, u16 height);
319 int em2820_scaler_set(struct em2820 *dev, u16 h, u16 v);
320 int em2820_resolution_set(struct em2820 *dev);
321 void em2820_isocIrq(struct urb *urb, struct pt_regs *regs);
322 int em2820_init_isoc(struct em2820 *dev);
323 void em2820_uninit_isoc(struct em2820 *dev);
324 int em2820_set_alternate(struct em2820 *dev);
326 /* Provided by em2820-cards.c */
327 extern int em2800_variant_detect(struct usb_device* udev,int model);
328 extern void em2820_card_setup(struct em2820 *dev);
329 extern struct em2820_board em2820_boards[];
330 extern struct usb_device_id em2820_id_table[];
331 extern const unsigned int em2820_bcount;
333 /* em2820 registers */
334 #define CHIPID_REG 0x0a
335 #define USBSUSP_REG 0x0c /* */
337 #define AUDIOSRC_REG 0x0e
338 #define XCLK_REG 0x0f
340 #define VINMODE_REG 0x10
341 #define VINCTRL_REG 0x11
342 #define VINENABLE_REG 0x12 /* */
344 #define GAMMA_REG 0x14
345 #define RGAIN_REG 0x15
346 #define GGAIN_REG 0x16
347 #define BGAIN_REG 0x17
348 #define ROFFSET_REG 0x18
349 #define GOFFSET_REG 0x19
350 #define BOFFSET_REG 0x1a
352 #define OFLOW_REG 0x1b
353 #define HSTART_REG 0x1c
354 #define VSTART_REG 0x1d
355 #define CWIDTH_REG 0x1e
356 #define CHEIGHT_REG 0x1f
358 #define YGAIN_REG 0x20
359 #define YOFFSET_REG 0x21
360 #define UVGAIN_REG 0x22
361 #define UOFFSET_REG 0x23
362 #define VOFFSET_REG 0x24
363 #define SHARPNESS_REG 0x25
365 #define COMPR_REG 0x26
366 #define OUTFMT_REG 0x27
368 #define XMIN_REG 0x28
369 #define XMAX_REG 0x29
370 #define YMIN_REG 0x2a
371 #define YMAX_REG 0x2b
373 #define HSCALELOW_REG 0x30
374 #define HSCALEHIGH_REG 0x31
375 #define VSCALELOW_REG 0x32
376 #define VSCALEHIGH_REG 0x33
378 #define AC97LSB_REG 0x40
379 #define AC97MSB_REG 0x41
380 #define AC97ADDR_REG 0x42
381 #define AC97BUSY_REG 0x43
383 /* em202 registers */
384 #define MASTER_AC97 0x02
385 #define VIDEO_AC97 0x14
387 /* register settings */
388 #define EM2820_AUDIO_SRC_TUNER 0xc0
389 #define EM2820_AUDIO_SRC_LINE 0x80
393 #define em2820_err(fmt, arg...) do {\
394 printk(KERN_ERR fmt , ##arg); } while (0)
396 #define em2820_errdev(fmt, arg...) do {\
397 printk(KERN_ERR "%s: "fmt,\
398 dev->name , ##arg); } while (0)
400 #define em2820_info(fmt, arg...) do {\
401 printk(KERN_INFO "%s: "fmt,\
402 dev->name , ##arg); } while (0)
403 #define em2820_warn(fmt, arg...) do {\
404 printk(KERN_WARNING "%s: "fmt,\
405 dev->name , ##arg); } while (0)
407 inline static int em2820_audio_source(struct em2820 *dev, int input)
409 return em2820_write_reg_bits(dev, AUDIOSRC_REG, input, 0xc0);
412 inline static int em2820_audio_usb_mute(struct em2820 *dev, int mute)
414 return em2820_write_reg_bits(dev, XCLK_REG, mute ? 0x00 : 0x80, 0x80);
417 inline static int em2820_audio_analog_setup(struct em2820 *dev)
419 /* unmute video mixer with default volume level */
420 return em2820_write_ac97(dev, VIDEO_AC97, "\x08\x08");
423 inline static int em2820_compression_disable(struct em2820 *dev)
425 /* side effect of disabling scaler and mixer */
426 return em2820_write_regs(dev, COMPR_REG, "\x00", 1);
429 inline static int em2820_contrast_get(struct em2820 *dev)
431 return em2820_read_reg(dev, YGAIN_REG) & 0x1f;
434 inline static int em2820_brightness_get(struct em2820 *dev)
436 return em2820_read_reg(dev, YOFFSET_REG);
439 inline static int em2820_saturation_get(struct em2820 *dev)
441 return em2820_read_reg(dev, UVGAIN_REG) & 0x1f;
444 inline static int em2820_u_balance_get(struct em2820 *dev)
446 return em2820_read_reg(dev, UOFFSET_REG);
449 inline static int em2820_v_balance_get(struct em2820 *dev)
451 return em2820_read_reg(dev, VOFFSET_REG);
454 inline static int em2820_gamma_get(struct em2820 *dev)
456 return em2820_read_reg(dev, GAMMA_REG) & 0x3f;
459 inline static int em2820_contrast_set(struct em2820 *dev, s32 val)
462 return em2820_write_regs(dev, YGAIN_REG, &tmp, 1);
465 inline static int em2820_brightness_set(struct em2820 *dev, s32 val)
468 return em2820_write_regs(dev, YOFFSET_REG, &tmp, 1);
471 inline static int em2820_saturation_set(struct em2820 *dev, s32 val)
474 return em2820_write_regs(dev, UVGAIN_REG, &tmp, 1);
477 inline static int em2820_u_balance_set(struct em2820 *dev, s32 val)
480 return em2820_write_regs(dev, UOFFSET_REG, &tmp, 1);
483 inline static int em2820_v_balance_set(struct em2820 *dev, s32 val)
486 return em2820_write_regs(dev, VOFFSET_REG, &tmp, 1);
489 inline static int em2820_gamma_set(struct em2820 *dev, s32 val)
492 return em2820_write_regs(dev, GAMMA_REG, &tmp, 1);
495 /*FIXME: maxw should be dependent of alt mode */
496 #define norm_maxw(dev) 720
497 inline static unsigned int norm_maxh(struct em2820 *dev)
499 return (dev->tvnorm->id & V4L2_STD_625_50) ? 576 : 480;