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 static struct v4l2_pix_format ov9650_modes[] = {
80 .colorspace = V4L2_COLORSPACE_SRGB,
90 .colorspace = V4L2_COLORSPACE_SRGB,
100 .colorspace = V4L2_COLORSPACE_SRGB,
110 .colorspace = V4L2_COLORSPACE_SRGB,
115 static void ov9650_dump_registers(struct sd *sd);
117 int ov9650_probe(struct sd *sd)
119 u8 prod_id = 0, ver_id = 0, i;
122 if (force_sensor == OV9650_SENSOR) {
123 info("Forcing an %s sensor", ov9650.name);
126 /* If we want to force another sensor,
127 don't try to probe this one */
131 info("Probing for an ov9650 sensor");
133 /* Run the pre-init to actually probe the unit */
134 for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) {
135 u8 data = preinit_ov9650[i][2];
136 if (preinit_ov9650[i][0] == SENSOR)
137 m5602_write_sensor(sd,
138 preinit_ov9650[i][1], &data, 1);
140 m5602_write_bridge(sd, preinit_ov9650[i][1], data);
143 if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
146 if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1))
149 if ((prod_id == 0x96) && (ver_id == 0x52)) {
150 info("Detected an ov9650 sensor");
157 // sd->gspca_dev.cam.cam_mode = ov9650.modes;
158 // sd->gspca_dev.cam.nmodes = ov9650.nmodes;
159 sd->gspca_dev.cam.cam_mode = ov9650_modes;
160 sd->gspca_dev.cam.nmodes = ARRAY_SIZE(ov9650_modes);
162 sd->desc->ctrls = ov9650.ctrls;
163 sd->desc->nctrls = ARRAY_SIZE(ov9650_ctrls);
167 int ov9650_init(struct sd *sd)
173 ov9650_dump_registers(sd);
175 for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
176 data = init_ov9650[i][2];
177 if (init_ov9650[i][0] == SENSOR)
178 err = m5602_write_sensor(sd, init_ov9650[i][1],
181 err = m5602_write_bridge(sd, init_ov9650[i][1], data);
184 if (dmi_check_system(ov9650_flip_dmi_table) && !err) {
185 info("vflip quirk active");
187 err = m5602_write_sensor(sd, OV9650_MVFP, &data, 1);
193 int ov9650_start(struct sd *sd)
196 struct cam *cam = &sd->gspca_dev.cam;
198 err = ov9650_init(sd);
202 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
203 if (res_init_ov9650[i][0] == BRIDGE)
204 err = m5602_write_bridge(sd, res_init_ov9650[i][1],
205 res_init_ov9650[i][2]);
206 else if (res_init_ov9650[i][0] == SENSOR) {
207 u8 data = res_init_ov9650[i][2];
208 err = m5602_write_sensor(sd,
209 res_init_ov9650[i][1], &data, 1);
215 switch (cam->cam_mode[sd->gspca_dev.curr_mode].width) {
217 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
219 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
220 if (VGA_ov9650[i][0] == SENSOR) {
221 u8 data = VGA_ov9650[i][2];
223 err = m5602_write_sensor(sd,
224 VGA_ov9650[i][1], &data, 1);
226 err = m5602_write_bridge(sd, VGA_ov9650[i][1],
233 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
235 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
236 if (CIF_ov9650[i][0] == SENSOR) {
237 u8 data = CIF_ov9650[i][2];
239 err = m5602_write_sensor(sd,
240 CIF_ov9650[i][1], &data, 1);
242 err = m5602_write_bridge(sd, CIF_ov9650[i][1],
249 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
251 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
252 if (QVGA_ov9650[i][0] == SENSOR) {
253 u8 data = QVGA_ov9650[i][2];
255 err = m5602_write_sensor(sd,
256 QVGA_ov9650[i][1], &data, 1);
258 err = m5602_write_bridge(sd, QVGA_ov9650[i][1],
265 PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
267 for (i = 0; i < ARRAY_SIZE(QCIF_ov9650) && !err; i++) {
268 if (QCIF_ov9650[i][0] == SENSOR) {
269 u8 data = QCIF_ov9650[i][2];
270 err = m5602_write_sensor(sd,
271 QCIF_ov9650[i][1], &data, 1);
273 err = m5602_write_bridge(sd, QCIF_ov9650[i][1],
283 int ov9650_stop(struct sd *sd)
285 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X;
286 return m5602_write_sensor(sd, OV9650_COM2, &data, 1);
289 int ov9650_power_down(struct sd *sd)
292 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
293 u8 data = power_down_ov9650[i][2];
294 if (power_down_ov9650[i][0] == SENSOR)
295 err = m5602_write_sensor(sd,
296 power_down_ov9650[i][1], &data, 1);
298 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
305 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
307 struct sd *sd = (struct sd *) gspca_dev;
311 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
314 *val = i2c_data & 0x03;
316 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
319 *val |= (i2c_data << 2);
321 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
324 *val |= (i2c_data & 0x3f) << 10;
326 PDEBUG(D_V4L2, "Read exposure %d", *val);
331 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
333 struct sd *sd = (struct sd *) gspca_dev;
337 PDEBUG(D_V4L2, "Set exposure to %d",
341 i2c_data = (val >> 10) & 0x3f;
342 err = m5602_write_sensor(sd, OV9650_AECHM,
347 /* The 8 middle bits */
348 i2c_data = (val >> 2) & 0xff;
349 err = m5602_write_sensor(sd, OV9650_AECH,
355 i2c_data = val & 0x03;
356 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
361 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
365 struct sd *sd = (struct sd *) gspca_dev;
367 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
368 *val = (i2c_data & 0x03) << 8;
370 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
372 PDEBUG(D_V4L2, "Read gain %d", *val);
376 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
380 struct sd *sd = (struct sd *) gspca_dev;
383 /* Read the OV9650_VREF register first to avoid
384 corrupting the VREF high and low bits */
385 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
386 /* Mask away all uninteresting bits */
387 i2c_data = ((val & 0x0300) >> 2) |
389 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
392 i2c_data = val & 0xff;
393 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
397 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
401 struct sd *sd = (struct sd *) gspca_dev;
403 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
406 PDEBUG(D_V4L2, "Read red gain %d", *val);
411 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
415 struct sd *sd = (struct sd *) gspca_dev;
417 PDEBUG(D_V4L2, "Set red gain to %d",
420 i2c_data = val & 0xff;
421 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
426 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
430 struct sd *sd = (struct sd *) gspca_dev;
432 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
435 PDEBUG(D_V4L2, "Read blue gain %d", *val);
440 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
444 struct sd *sd = (struct sd *) gspca_dev;
446 PDEBUG(D_V4L2, "Set blue gain to %d",
449 i2c_data = val & 0xff;
450 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
455 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
459 struct sd *sd = (struct sd *) gspca_dev;
461 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
462 if (dmi_check_system(ov9650_flip_dmi_table))
463 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
465 *val = (i2c_data & OV9650_HFLIP) >> 5;
466 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
471 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
475 struct sd *sd = (struct sd *) gspca_dev;
477 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
478 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
482 if (dmi_check_system(ov9650_flip_dmi_table))
483 i2c_data = ((i2c_data & 0xdf) |
484 (((val ? 0 : 1) & 0x01) << 5));
486 i2c_data = ((i2c_data & 0xdf) |
487 ((val & 0x01) << 5));
489 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
494 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
498 struct sd *sd = (struct sd *) gspca_dev;
500 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
501 if (dmi_check_system(ov9650_flip_dmi_table))
502 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
504 *val = (i2c_data & 0x10) >> 4;
505 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
510 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
514 struct sd *sd = (struct sd *) gspca_dev;
516 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
517 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
521 if (dmi_check_system(ov9650_flip_dmi_table))
522 i2c_data = ((i2c_data & 0xef) |
523 (((val ? 0 : 1) & 0x01) << 4));
525 i2c_data = ((i2c_data & 0xef) |
526 ((val & 0x01) << 4));
528 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
533 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
537 struct sd *sd = (struct sd *) gspca_dev;
539 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
542 *val = (i2c_data & 0x03) << 8;
544 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
546 PDEBUG(D_V4L2, "Read gain %d", *val);
551 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
555 struct sd *sd = (struct sd *) gspca_dev;
557 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
559 /* Read the OV9650_VREF register first to avoid
560 corrupting the VREF high and low bits */
561 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
565 /* Mask away all uninteresting bits */
566 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
567 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
572 i2c_data = val & 0xff;
573 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
578 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
582 struct sd *sd = (struct sd *) gspca_dev;
584 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
585 *val = (i2c_data & OV9650_AWB_EN) >> 1;
586 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
591 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
595 struct sd *sd = (struct sd *) gspca_dev;
597 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
598 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
602 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
603 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
608 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
612 struct sd *sd = (struct sd *) gspca_dev;
614 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
615 *val = (i2c_data & OV9650_AGC_EN) >> 2;
616 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
621 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
625 struct sd *sd = (struct sd *) gspca_dev;
627 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
628 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
632 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
633 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
638 static void ov9650_dump_registers(struct sd *sd)
641 info("Dumping the ov9650 register state");
642 for (address = 0; address < 0xa9; address++) {
644 m5602_read_sensor(sd, address, &value, 1);
645 info("register 0x%x contains 0x%x",
649 info("ov9650 register state dump complete");
651 info("Probing for which registers that are read/write");
652 for (address = 0; address < 0xff; address++) {
653 u8 old_value, ctrl_value;
654 u8 test_value[2] = {0xff, 0xff};
656 m5602_read_sensor(sd, address, &old_value, 1);
657 m5602_write_sensor(sd, address, test_value, 1);
658 m5602_read_sensor(sd, address, &ctrl_value, 1);
660 if (ctrl_value == test_value[0])
661 info("register 0x%x is writeable", address);
663 info("register 0x%x is read only", address);
665 /* Restore original value */
666 m5602_write_sensor(sd, address, &old_value, 1);