2 * Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
3 * Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
4 * Copyright (c) 2002, 2003 Tuukka Toivonen
5 * Copyright (c) 2008 Erik Andrén
6 * Copyright (c) 2008 Chia-I Wu
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * P/N 861037: Sensor HDCS1000 ASIC STV0600
23 * P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
24 * P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
25 * P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
26 * P/N 861075-0040: Sensor HDCS1000 ASIC
27 * P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
28 * P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
31 #include "stv06xx_hdcs.h"
33 static const struct ctrl hdcs1x00_ctrl
[] = {
36 .id
= V4L2_CID_EXPOSURE
,
37 .type
= V4L2_CTRL_TYPE_INTEGER
,
42 .default_value
= HDCS_DEFAULT_EXPOSURE
,
43 .flags
= V4L2_CTRL_FLAG_SLIDER
45 .set
= hdcs_set_exposure
,
46 .get
= hdcs_get_exposure
50 .type
= V4L2_CTRL_TYPE_INTEGER
,
55 .default_value
= HDCS_DEFAULT_GAIN
,
56 .flags
= V4L2_CTRL_FLAG_SLIDER
63 static struct v4l2_pix_format hdcs1x00_mode
[] = {
70 HDCS_1X00_DEF_WIDTH
* HDCS_1X00_DEF_HEIGHT
,
71 .bytesperline
= HDCS_1X00_DEF_WIDTH
,
72 .colorspace
= V4L2_COLORSPACE_SRGB
,
77 static const struct ctrl hdcs1020_ctrl
[] = {};
79 static struct v4l2_pix_format hdcs1020_mode
[] = {
86 HDCS_1020_DEF_WIDTH
* HDCS_1020_DEF_HEIGHT
,
87 .bytesperline
= HDCS_1020_DEF_WIDTH
,
88 .colorspace
= V4L2_COLORSPACE_SRGB
,
93 enum hdcs_power_state
{
101 enum hdcs_power_state state
;
104 /* visible area of the sensor array */
112 /* Column timing overhead */
114 /* Column processing overhead */
116 /* Row sample period constant */
118 /* Exposure reset duration */
125 static int hdcs_reg_write_seq(struct sd
*sd
, u8 reg
, u8
*vals
, u8 len
)
127 u8 regs
[I2C_MAX_BYTES
* 2];
130 if (unlikely((len
<= 0) || (len
>= I2C_MAX_BYTES
) ||
134 for (i
= 0; i
< len
; i
++, reg
++) {
136 regs
[2*i
+1] = vals
[i
];
139 return stv06xx_write_sensor_bytes(sd
, regs
, len
);
142 static int hdcs_set_state(struct sd
*sd
, enum hdcs_power_state state
)
144 struct hdcs
*hdcs
= sd
->sensor_priv
;
148 if (hdcs
->state
== state
)
151 /* we need to go idle before running or sleeping */
152 if (hdcs
->state
!= HDCS_STATE_IDLE
) {
153 ret
= stv06xx_write_sensor(sd
, HDCS_REG_CONTROL(sd
), 0);
158 hdcs
->state
= HDCS_STATE_IDLE
;
160 if (state
== HDCS_STATE_IDLE
)
164 case HDCS_STATE_SLEEP
:
165 val
= HDCS_SLEEP_MODE
;
169 val
= HDCS_RUN_ENABLE
;
176 ret
= stv06xx_write_sensor(sd
, HDCS_REG_CONTROL(sd
), val
);
183 static int hdcs_reset(struct sd
*sd
)
185 struct hdcs
*hdcs
= sd
->sensor_priv
;
188 err
= stv06xx_write_sensor(sd
, HDCS_REG_CONTROL(sd
), 1);
192 err
= stv06xx_write_sensor(sd
, HDCS_REG_CONTROL(sd
), 0);
194 hdcs
->state
= HDCS_STATE_IDLE
;
199 static int hdcs_get_exposure(struct gspca_dev
*gspca_dev
, __s32
*val
)
201 struct sd
*sd
= (struct sd
*) gspca_dev
;
202 struct hdcs
*hdcs
= sd
->sensor_priv
;
204 /* Column time period */
206 /* Column processing period */
208 /* Row processing period */
215 err
= stv06xx_read_sensor(sd
, HDCS_ROWEXPL
, &data
[0]);
219 err
= stv06xx_read_sensor(sd
, HDCS_ROWEXPH
, &data
[1]);
223 rowexp
= (data
[1] << 8) | data
[0];
225 ct
= hdcs
->exp
.cto
+ hdcs
->psmp
+ (HDCS_ADC_START_SIG_DUR
+ 2);
226 cp
= hdcs
->exp
.cto
+ (hdcs
->w
* ct
/ 2);
227 rp
= hdcs
->exp
.rs
+ cp
;
229 cycles
= rp
* rowexp
;
230 *val
= cycles
/ HDCS_CLK_FREQ_MHZ
;
231 PDEBUG(D_V4L2
, "Read exposure %d", *val
);
235 static int hdcs_set_exposure(struct gspca_dev
*gspca_dev
, __s32 val
)
237 struct sd
*sd
= (struct sd
*) gspca_dev
;
238 struct hdcs
*hdcs
= sd
->sensor_priv
;
241 /* Column time period */
243 /* Column processing period */
245 /* Row processing period */
247 /* Minimum number of column timing periods
248 within the column processing period */
253 cycles
= val
* HDCS_CLK_FREQ_MHZ
;
255 ct
= hdcs
->exp
.cto
+ hdcs
->psmp
+ (HDCS_ADC_START_SIG_DUR
+ 2);
256 cp
= hdcs
->exp
.cto
+ (hdcs
->w
* ct
/ 2);
258 /* the cycles one row takes */
259 rp
= hdcs
->exp
.rs
+ cp
;
261 rowexp
= cycles
/ rp
;
263 /* the remaining cycles */
264 cycles
-= rowexp
* rp
;
266 /* calculate sub-row exposure */
268 /* see HDCS-1020 datasheet 3.5.6.4, p. 63 */
269 srowexp
= hdcs
->w
- (cycles
+ hdcs
->exp
.er
+ 13) / ct
;
271 mnct
= (hdcs
->exp
.er
+ 12 + ct
- 1) / ct
;
272 max_srowexp
= hdcs
->w
- mnct
;
274 /* see HDCS-1000 datasheet 3.4.5.5, p. 61 */
275 srowexp
= cp
- hdcs
->exp
.er
- 6 - cycles
;
277 mnct
= (hdcs
->exp
.er
+ 5 + ct
- 1) / ct
;
278 max_srowexp
= cp
- mnct
* ct
- 1;
283 else if (srowexp
> max_srowexp
)
284 srowexp
= max_srowexp
;
287 exp
[0] = rowexp
& 0xff;
288 exp
[1] = rowexp
>> 8;
289 exp
[2] = (srowexp
>> 2) & 0xff;
290 /* this clears exposure error flag */
292 err
= hdcs_reg_write_seq(sd
, HDCS_ROWEXPL
, exp
, 4);
294 exp
[0] = rowexp
& 0xff;
295 exp
[1] = rowexp
>> 8;
296 exp
[2] = srowexp
& 0xff;
297 exp
[3] = srowexp
>> 8;
298 err
= hdcs_reg_write_seq(sd
, HDCS_ROWEXPL
, exp
, 4);
302 /* clear exposure error flag */
303 err
= stv06xx_write_sensor(sd
,
304 HDCS_STATUS
, BIT(4));
306 PDEBUG(D_V4L2
, "Writing exposure %d, rowexp %d, srowexp %d",
307 val
, rowexp
, srowexp
);
311 static int hdcs_set_gains(struct sd
*sd
, u8 r
, u8 g
, u8 b
)
315 /* the voltage gain Av = (1 + 19 * val / 127) * (1 + bit7) */
328 return hdcs_reg_write_seq(sd
, HDCS_ERECPGA
, gains
, 4);
331 static int hdcs_get_gain(struct gspca_dev
*gspca_dev
, __s32
*val
)
333 struct sd
*sd
= (struct sd
*) gspca_dev
;
337 err
= stv06xx_read_sensor(sd
, HDCS_ERECPGA
, &data
);
339 /* Bit 7 doubles the gain */
341 *val
= (data
& 0x7f) * 2;
345 PDEBUG(D_V4L2
, "Read gain %d", *val
);
349 static int hdcs_set_gain(struct gspca_dev
*gspca_dev
, __s32 val
)
351 PDEBUG(D_V4L2
, "Writing gain %d", val
);
352 return hdcs_set_gains((struct sd
*) gspca_dev
,
353 val
& 0xff, val
& 0xff, val
& 0xff);
356 static int hdcs_set_size(struct sd
*sd
,
357 unsigned int width
, unsigned int height
)
359 struct hdcs
*hdcs
= sd
->sensor_priv
;
364 /* must be multiple of 4 */
365 width
= (width
+ 3) & ~0x3;
366 height
= (height
+ 3) & ~0x3;
368 if (width
> hdcs
->array
.width
)
369 width
= hdcs
->array
.width
;
372 /* the borders are also invalid */
373 if (height
+ 2 * hdcs
->array
.border
+ HDCS_1020_BOTTOM_Y_SKIP
374 > hdcs
->array
.height
)
375 height
= hdcs
->array
.height
- 2 * hdcs
->array
.border
-
376 HDCS_1020_BOTTOM_Y_SKIP
;
378 y
= (hdcs
->array
.height
- HDCS_1020_BOTTOM_Y_SKIP
- height
) / 2
381 if (height
> hdcs
->array
.height
)
382 height
= hdcs
->array
.height
;
384 y
= hdcs
->array
.top
+ (hdcs
->array
.height
- height
) / 2;
387 x
= hdcs
->array
.left
+ (hdcs
->array
.width
- width
) / 2;
391 win
[2] = (y
+ height
) / 4 - 1;
392 win
[3] = (x
+ width
) / 4 - 1;
394 err
= hdcs_reg_write_seq(sd
, HDCS_FWROW
, win
, 4);
398 /* Update the current width and height */
404 static int hdcs_probe_1x00(struct sd
*sd
)
410 ret
= stv06xx_read_sensor(sd
, HDCS_IDENT
, &sensor
);
411 if (ret
< 0 || sensor
!= 0x08)
414 info("HDCS-1000/1100 sensor detected");
416 sd
->gspca_dev
.cam
.cam_mode
= hdcs1x00_mode
;
417 sd
->gspca_dev
.cam
.nmodes
= ARRAY_SIZE(hdcs1x00_mode
);
418 sd
->desc
.ctrls
= hdcs1x00_ctrl
;
419 sd
->desc
.nctrls
= ARRAY_SIZE(hdcs1x00_ctrl
);
421 hdcs
= kmalloc(sizeof(struct hdcs
), GFP_KERNEL
);
425 hdcs
->array
.left
= 8;
427 hdcs
->array
.width
= HDCS_1X00_DEF_WIDTH
;
428 hdcs
->array
.height
= HDCS_1X00_DEF_HEIGHT
;
429 hdcs
->array
.border
= 4;
437 * Frame rate on HDCS-1000 0x46D:0x840 depends on PSMP:
438 * 4 = doesn't work at all
446 * Frame rate on HDCS-1000 0x46D:0x870 depends on PSMP:
447 * 15 = doesn't work at all
448 * 18 = doesn't work at all
456 hdcs
->psmp
= IS_870(sd
) ? 20 : 5;
458 sd
->sensor_priv
= hdcs
;
463 static int hdcs_probe_1020(struct sd
*sd
)
469 ret
= stv06xx_read_sensor(sd
, HDCS_IDENT
, &sensor
);
470 if (ret
< 0 || sensor
!= 0x10)
473 info("HDCS-1020 sensor detected");
475 sd
->gspca_dev
.cam
.cam_mode
= hdcs1020_mode
;
476 sd
->gspca_dev
.cam
.nmodes
= ARRAY_SIZE(hdcs1020_mode
);
477 sd
->desc
.ctrls
= hdcs1020_ctrl
;
478 sd
->desc
.nctrls
= ARRAY_SIZE(hdcs1020_ctrl
);
480 hdcs
= kmalloc(sizeof(struct hdcs
), GFP_KERNEL
);
485 * From Andrey's test image: looks like HDCS-1020 upper-left
486 * visible pixel is at 24,8 (y maybe even smaller?) and lower-right
487 * visible pixel at 375,299 (x maybe even larger?)
489 hdcs
->array
.left
= 24;
491 hdcs
->array
.width
= HDCS_1020_DEF_WIDTH
;
492 hdcs
->array
.height
= 304;
493 hdcs
->array
.border
= 4;
502 sd
->sensor_priv
= hdcs
;
507 static int hdcs_start(struct sd
*sd
)
509 PDEBUG(D_STREAM
, "Starting stream");
511 return hdcs_set_state(sd
, HDCS_STATE_RUN
);
514 static int hdcs_stop(struct sd
*sd
)
516 PDEBUG(D_STREAM
, "Halting stream");
518 return hdcs_set_state(sd
, HDCS_STATE_SLEEP
);
521 static void hdcs_disconnect(struct sd
*sd
)
523 PDEBUG(D_PROBE
, "Disconnecting the sensor");
524 kfree(sd
->sensor_priv
);
527 static int hdcs_init(struct sd
*sd
)
529 struct hdcs
*hdcs
= sd
->sensor_priv
;
532 /* Set the STV0602AA in STV0600 emulation mode */
534 stv06xx_write_bridge(sd
, STV_STV0600_EMULATION
, 1);
536 /* Execute the bridge init */
537 for (i
= 0; i
< ARRAY_SIZE(stv_bridge_init
) && !err
; i
++) {
538 err
= stv06xx_write_bridge(sd
, stv_bridge_init
[i
][0],
539 stv_bridge_init
[i
][1]);
544 /* sensor soft reset */
547 /* Execute the sensor init */
548 for (i
= 0; i
< ARRAY_SIZE(stv_sensor_init
) && !err
; i
++) {
549 err
= stv06xx_write_sensor(sd
, stv_sensor_init
[i
][0],
550 stv_sensor_init
[i
][1]);
555 /* Enable continous frame capture, bit 2: stop when frame complete */
556 err
= stv06xx_write_sensor(sd
, HDCS_REG_CONFIG(sd
), BIT(3));
560 /* Set PGA sample duration
561 (was 0x7E for IS_870, but caused slow framerate with HDCS-1020) */
563 err
= stv06xx_write_sensor(sd
, HDCS_TCTRL
,
564 (HDCS_ADC_START_SIG_DUR
<< 6) | hdcs
->psmp
);
566 err
= stv06xx_write_sensor(sd
, HDCS_TCTRL
,
567 (HDCS_ADC_START_SIG_DUR
<< 5) | hdcs
->psmp
);
571 err
= hdcs_set_gains(sd
, HDCS_DEFAULT_GAIN
, HDCS_DEFAULT_GAIN
,
576 err
= hdcs_set_exposure(&sd
->gspca_dev
, HDCS_DEFAULT_EXPOSURE
);
580 err
= hdcs_set_size(sd
, hdcs
->array
.width
, hdcs
->array
.height
);
584 static int hdcs_dump(struct sd
*sd
)
588 info("Dumping sensor registers:");
590 for (reg
= HDCS_IDENT
; reg
<= HDCS_ROWEXPH
; reg
++) {
591 stv06xx_read_sensor(sd
, reg
, &val
);
592 info("reg 0x%02x = 0x%02x", reg
, val
);