2 * Driver for the ov9650 sensor
4 * Copyright (C) 2008 Erik Andrén
5 * Copyright (C) 2007 Ilyes Gouta. Based on the m5603x Linux Driver Project.
6 * Copyright (C) 2005 m5603x Linux Driver Project <m5602@x3ng.com.br>
8 * Portions of code to USB interface and ALi driver software,
9 * Copyright (c) 2006 Willem Duinker
10 * v4l2 interface modeled after the V4L2 driver
11 * for SN9C10x PC Camera Controllers
13 * This program is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU General Public License as
15 * published by the Free Software Foundation, version 2.
19 #include "m5602_ov9650.h"
21 /* Vertically and horizontally flips the image if matched, needed for machines
22 where the sensor is mounted upside down */
25 struct dmi_system_id ov9650_flip_dmi_table[] = {
29 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
30 DMI_MATCH(DMI_PRODUCT_NAME, "A6VC")
36 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
37 DMI_MATCH(DMI_PRODUCT_NAME, "A6VM")
43 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
44 DMI_MATCH(DMI_PRODUCT_NAME, "A6JC")
50 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
51 DMI_MATCH(DMI_PRODUCT_NAME, "A6J")
57 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
58 DMI_MATCH(DMI_PRODUCT_NAME, "A6Kt")
62 .ident = "Alienware Aurora m9700",
64 DMI_MATCH(DMI_SYS_VENDOR, "alienware"),
65 DMI_MATCH(DMI_PRODUCT_NAME, "Aurora m9700")
71 const static struct ctrl ov9650_ctrls[] = {
74 .id = V4L2_CID_EXPOSURE,
75 .type = V4L2_CTRL_TYPE_INTEGER,
80 .default_value = EXPOSURE_DEFAULT,
81 .flags = V4L2_CTRL_FLAG_SLIDER
83 .set = ov9650_set_exposure,
84 .get = ov9650_get_exposure
88 .type = V4L2_CTRL_TYPE_INTEGER,
93 .default_value = GAIN_DEFAULT,
94 .flags = V4L2_CTRL_FLAG_SLIDER
96 .set = ov9650_set_gain,
97 .get = ov9650_get_gain
100 .type = V4L2_CTRL_TYPE_INTEGER,
101 .name = "red balance",
105 .default_value = RED_GAIN_DEFAULT,
106 .flags = V4L2_CTRL_FLAG_SLIDER
108 .set = ov9650_set_red_balance,
109 .get = ov9650_get_red_balance
112 .type = V4L2_CTRL_TYPE_INTEGER,
113 .name = "blue balance",
117 .default_value = BLUE_GAIN_DEFAULT,
118 .flags = V4L2_CTRL_FLAG_SLIDER
120 .set = ov9650_set_blue_balance,
121 .get = ov9650_get_blue_balance
124 .id = V4L2_CID_HFLIP,
125 .type = V4L2_CTRL_TYPE_BOOLEAN,
126 .name = "horizontal flip",
132 .set = ov9650_set_hflip,
133 .get = ov9650_get_hflip
136 .id = V4L2_CID_VFLIP,
137 .type = V4L2_CTRL_TYPE_BOOLEAN,
138 .name = "vertical flip",
144 .set = ov9650_set_vflip,
145 .get = ov9650_get_vflip
148 .id = V4L2_CID_AUTO_WHITE_BALANCE,
149 .type = V4L2_CTRL_TYPE_BOOLEAN,
150 .name = "auto white balance",
156 .set = ov9650_set_auto_white_balance,
157 .get = ov9650_get_auto_white_balance
160 .id = V4L2_CID_AUTOGAIN,
161 .type = V4L2_CTRL_TYPE_BOOLEAN,
162 .name = "auto gain control",
168 .set = ov9650_set_auto_gain,
169 .get = ov9650_get_auto_gain
173 static struct v4l2_pix_format ov9650_modes[] = {
182 .colorspace = V4L2_COLORSPACE_SRGB,
192 .colorspace = V4L2_COLORSPACE_SRGB,
202 .colorspace = V4L2_COLORSPACE_SRGB,
212 .colorspace = V4L2_COLORSPACE_SRGB,
217 static void ov9650_dump_registers(struct sd *sd);
219 int ov9650_probe(struct sd *sd)
222 u8 prod_id = 0, ver_id = 0, i;
225 if (force_sensor == OV9650_SENSOR) {
226 info("Forcing an %s sensor", ov9650.name);
229 /* If we want to force another sensor,
230 don't try to probe this one */
234 info("Probing for an ov9650 sensor");
236 /* Run the pre-init to actually probe the unit */
237 for (i = 0; i < ARRAY_SIZE(preinit_ov9650) && !err; i++) {
238 u8 data = preinit_ov9650[i][2];
239 if (preinit_ov9650[i][0] == SENSOR)
240 err = m5602_write_sensor(sd,
241 preinit_ov9650[i][1], &data, 1);
243 err = m5602_write_bridge(sd, preinit_ov9650[i][1], data);
249 if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
252 if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1))
255 if ((prod_id == 0x96) && (ver_id == 0x52)) {
256 info("Detected an ov9650 sensor");
263 sd->gspca_dev.cam.cam_mode = ov9650_modes;
264 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes);
265 sd->desc->ctrls = ov9650_ctrls;
266 sd->desc->nctrls = ARRAY_SIZE(ov9650_ctrls);
270 int ov9650_init(struct sd *sd)
276 ov9650_dump_registers(sd);
278 for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
279 data = init_ov9650[i][2];
280 if (init_ov9650[i][0] == SENSOR)
281 err = m5602_write_sensor(sd, init_ov9650[i][1],
284 err = m5602_write_bridge(sd, init_ov9650[i][1], data);
287 if (dmi_check_system(ov9650_flip_dmi_table) && !err) {
288 info("vflip quirk active");
290 err = m5602_write_sensor(sd, OV9650_MVFP, &data, 1);
296 int ov9650_start(struct sd *sd)
300 struct cam *cam = &sd->gspca_dev.cam;
301 int width = cam->cam_mode[sd->gspca_dev.curr_mode].width;
302 int height = cam->cam_mode[sd->gspca_dev.curr_mode].height;
303 int ver_offs = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
304 int hor_offs = OV9650_LEFT_OFFSET;
309 err = ov9650_init(sd);
313 /* Synthesize the vsync/hsync setup */
314 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
315 if (res_init_ov9650[i][0] == BRIDGE)
316 err = m5602_write_bridge(sd, res_init_ov9650[i][1],
317 res_init_ov9650[i][2]);
318 else if (res_init_ov9650[i][0] == SENSOR) {
319 u8 data = res_init_ov9650[i][2];
320 err = m5602_write_sensor(sd,
321 res_init_ov9650[i][1], &data, 1);
327 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, ((ver_offs >> 8) & 0xff));
331 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (ver_offs & 0xff));
335 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
339 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height >> 8) & 0xff);
343 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, (height & 0xff));
347 for (i = 0; i < 2 && !err; i++) {
348 err = m5602_write_bridge(sd, M5602_XB_VSYNC_PARA, 0);
353 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, (hor_offs >> 8) & 0xff);
357 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, hor_offs & 0xff);
361 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) >> 8) & 0xff);
365 err = m5602_write_bridge(sd, M5602_XB_HSYNC_PARA, ((width + hor_offs) & 0xff));
371 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
373 data = OV9650_VGA_SELECT | OV9650_RGB_SELECT |
374 OV9650_RAW_RGB_SELECT;
376 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
381 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
383 data = OV9650_CIF_SELECT | OV9650_RGB_SELECT |
384 OV9650_RAW_RGB_SELECT;
386 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
391 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
393 data = OV9650_QVGA_SELECT | OV9650_RGB_SELECT |
394 OV9650_RAW_RGB_SELECT;
396 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
401 PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
403 data = OV9650_QCIF_SELECT | OV9650_RGB_SELECT |
404 OV9650_RAW_RGB_SELECT;
406 err = m5602_write_sensor(sd, OV9650_COM7, &data, 1);
412 int ov9650_stop(struct sd *sd)
414 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X;
415 return m5602_write_sensor(sd, OV9650_COM2, &data, 1);
418 int ov9650_power_down(struct sd *sd)
421 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
422 u8 data = power_down_ov9650[i][2];
423 if (power_down_ov9650[i][0] == SENSOR)
424 err = m5602_write_sensor(sd,
425 power_down_ov9650[i][1], &data, 1);
427 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
434 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
436 struct sd *sd = (struct sd *) gspca_dev;
440 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
443 *val |= (i2c_data << 2);
445 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
448 *val |= (i2c_data & 0x3f) << 10;
450 PDEBUG(D_V4L2, "Read exposure %d", *val);
455 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
457 struct sd *sd = (struct sd *) gspca_dev;
461 PDEBUG(D_V4L2, "Set exposure to %d",
465 i2c_data = (val >> 10) & 0x3f;
466 err = m5602_write_sensor(sd, OV9650_AECHM,
471 /* The 8 middle bits */
472 i2c_data = (val >> 2) & 0xff;
473 err = m5602_write_sensor(sd, OV9650_AECH,
479 i2c_data = val & 0x03;
480 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
485 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
489 struct sd *sd = (struct sd *) gspca_dev;
491 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
495 *val = (i2c_data & 0x03) << 8;
497 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
499 PDEBUG(D_V4L2, "Read gain %d", *val);
503 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
507 struct sd *sd = (struct sd *) gspca_dev;
510 /* Read the OV9650_VREF register first to avoid
511 corrupting the VREF high and low bits */
512 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
516 /* Mask away all uninteresting bits */
517 i2c_data = ((val & 0x0300) >> 2) |
519 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
524 i2c_data = val & 0xff;
525 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
529 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
533 struct sd *sd = (struct sd *) gspca_dev;
535 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
538 PDEBUG(D_V4L2, "Read red gain %d", *val);
543 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
547 struct sd *sd = (struct sd *) gspca_dev;
549 PDEBUG(D_V4L2, "Set red gain to %d",
552 i2c_data = val & 0xff;
553 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
558 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
562 struct sd *sd = (struct sd *) gspca_dev;
564 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
567 PDEBUG(D_V4L2, "Read blue gain %d", *val);
572 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
576 struct sd *sd = (struct sd *) gspca_dev;
578 PDEBUG(D_V4L2, "Set blue gain to %d",
581 i2c_data = val & 0xff;
582 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
587 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
591 struct sd *sd = (struct sd *) gspca_dev;
593 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
594 if (dmi_check_system(ov9650_flip_dmi_table))
595 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
597 *val = (i2c_data & OV9650_HFLIP) >> 5;
598 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
603 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
607 struct sd *sd = (struct sd *) gspca_dev;
609 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
610 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
614 if (dmi_check_system(ov9650_flip_dmi_table))
615 i2c_data = ((i2c_data & 0xdf) |
616 (((val ? 0 : 1) & 0x01) << 5));
618 i2c_data = ((i2c_data & 0xdf) |
619 ((val & 0x01) << 5));
621 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
626 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
630 struct sd *sd = (struct sd *) gspca_dev;
632 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
633 if (dmi_check_system(ov9650_flip_dmi_table))
634 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
636 *val = (i2c_data & 0x10) >> 4;
637 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
642 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
646 struct sd *sd = (struct sd *) gspca_dev;
648 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
649 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
653 if (dmi_check_system(ov9650_flip_dmi_table))
654 i2c_data = ((i2c_data & 0xef) |
655 (((val ? 0 : 1) & 0x01) << 4));
657 i2c_data = ((i2c_data & 0xef) |
658 ((val & 0x01) << 4));
660 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
665 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
669 struct sd *sd = (struct sd *) gspca_dev;
671 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
674 *val = (i2c_data & 0x03) << 8;
676 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
678 PDEBUG(D_V4L2, "Read gain %d", *val);
683 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
687 struct sd *sd = (struct sd *) gspca_dev;
689 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
691 /* Read the OV9650_VREF register first to avoid
692 corrupting the VREF high and low bits */
693 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
697 /* Mask away all uninteresting bits */
698 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
699 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
704 i2c_data = val & 0xff;
705 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
710 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
714 struct sd *sd = (struct sd *) gspca_dev;
716 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
717 *val = (i2c_data & OV9650_AWB_EN) >> 1;
718 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
723 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
727 struct sd *sd = (struct sd *) gspca_dev;
729 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
730 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
734 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
735 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
740 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
744 struct sd *sd = (struct sd *) gspca_dev;
746 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
747 *val = (i2c_data & OV9650_AGC_EN) >> 2;
748 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
753 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
757 struct sd *sd = (struct sd *) gspca_dev;
759 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
760 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
764 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
765 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
770 static void ov9650_dump_registers(struct sd *sd)
773 info("Dumping the ov9650 register state");
774 for (address = 0; address < 0xa9; address++) {
776 m5602_read_sensor(sd, address, &value, 1);
777 info("register 0x%x contains 0x%x",
781 info("ov9650 register state dump complete");
783 info("Probing for which registers that are read/write");
784 for (address = 0; address < 0xff; address++) {
785 u8 old_value, ctrl_value;
786 u8 test_value[2] = {0xff, 0xff};
788 m5602_read_sensor(sd, address, &old_value, 1);
789 m5602_write_sensor(sd, address, test_value, 1);
790 m5602_read_sensor(sd, address, &ctrl_value, 1);
792 if (ctrl_value == test_value[0])
793 info("register 0x%x is writeable", address);
795 info("register 0x%x is read only", address);
797 /* Restore original value */
798 m5602_write_sensor(sd, address, &old_value, 1);