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 void ov9650_dump_registers(struct sd *sd);
73 int ov9650_probe(struct sd *sd)
75 u8 prod_id = 0, ver_id = 0, i;
78 if (force_sensor == OV9650_SENSOR) {
79 info("Forcing an %s sensor", ov9650.name);
82 /* If we want to force another sensor,
83 don't try to probe this one */
87 info("Probing for an ov9650 sensor");
89 /* Run the pre-init to actually probe the unit */
90 for (i = 0; i < ARRAY_SIZE(preinit_ov9650); i++) {
91 u8 data = preinit_ov9650[i][2];
92 if (preinit_ov9650[i][0] == SENSOR)
93 m5602_write_sensor(sd,
94 preinit_ov9650[i][1], &data, 1);
96 m5602_write_bridge(sd, preinit_ov9650[i][1], data);
99 if (m5602_read_sensor(sd, OV9650_PID, &prod_id, 1))
102 if (m5602_read_sensor(sd, OV9650_VER, &ver_id, 1))
105 if ((prod_id == 0x96) && (ver_id == 0x52)) {
106 info("Detected an ov9650 sensor");
113 sd->gspca_dev.cam.cam_mode = ov9650.modes;
114 sd->gspca_dev.cam.nmodes = ov9650.nmodes;
115 sd->desc->ctrls = ov9650.ctrls;
116 sd->desc->nctrls = ARRAY_SIZE(ov9650_ctrls);
120 int ov9650_init(struct sd *sd)
126 ov9650_dump_registers(sd);
128 for (i = 0; i < ARRAY_SIZE(init_ov9650) && !err; i++) {
129 data = init_ov9650[i][2];
130 if (init_ov9650[i][0] == SENSOR)
131 err = m5602_write_sensor(sd, init_ov9650[i][1],
134 err = m5602_write_bridge(sd, init_ov9650[i][1], data);
137 if (dmi_check_system(ov9650_flip_dmi_table) && !err) {
138 info("vflip quirk active");
140 err = m5602_write_sensor(sd, OV9650_MVFP, &data, 1);
146 int ov9650_start(struct sd *sd)
149 struct cam *cam = &sd->gspca_dev.cam;
151 err = ov9650_init(sd);
155 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
156 if (res_init_ov9650[i][0] == BRIDGE)
157 err = m5602_write_bridge(sd, res_init_ov9650[i][1],
158 res_init_ov9650[i][2]);
159 else if (res_init_ov9650[i][0] == SENSOR) {
160 u8 data = res_init_ov9650[i][2];
161 err = m5602_write_sensor(sd,
162 res_init_ov9650[i][1], &data, 1);
168 switch (cam->cam_mode[sd->gspca_dev.curr_mode].width) {
170 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
172 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
173 if (VGA_ov9650[i][0] == SENSOR) {
174 u8 data = VGA_ov9650[i][2];
176 err = m5602_write_sensor(sd,
177 VGA_ov9650[i][1], &data, 1);
179 err = m5602_write_bridge(sd, VGA_ov9650[i][1],
186 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
188 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
189 if (CIF_ov9650[i][0] == SENSOR) {
190 u8 data = CIF_ov9650[i][2];
192 err = m5602_write_sensor(sd,
193 CIF_ov9650[i][1], &data, 1);
195 err = m5602_write_bridge(sd, CIF_ov9650[i][1],
202 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
204 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
205 if (QVGA_ov9650[i][0] == SENSOR) {
206 u8 data = QVGA_ov9650[i][2];
208 err = m5602_write_sensor(sd,
209 QVGA_ov9650[i][1], &data, 1);
211 err = m5602_write_bridge(sd, QVGA_ov9650[i][1],
218 PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
220 for (i = 0; i < ARRAY_SIZE(QCIF_ov9650) && !err; i++) {
221 if (QCIF_ov9650[i][0] == SENSOR) {
222 u8 data = QCIF_ov9650[i][2];
223 err = m5602_write_sensor(sd,
224 QCIF_ov9650[i][1], &data, 1);
226 err = m5602_write_bridge(sd, QCIF_ov9650[i][1],
236 int ov9650_stop(struct sd *sd)
238 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X;
239 return m5602_write_sensor(sd, OV9650_COM2, &data, 1);
242 int ov9650_power_down(struct sd *sd)
245 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
246 u8 data = power_down_ov9650[i][2];
247 if (power_down_ov9650[i][0] == SENSOR)
248 err = m5602_write_sensor(sd,
249 power_down_ov9650[i][1], &data, 1);
251 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
258 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
260 struct sd *sd = (struct sd *) gspca_dev;
264 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
267 *val = i2c_data & 0x03;
269 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
272 *val |= (i2c_data << 2);
274 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
277 *val |= (i2c_data & 0x3f) << 10;
279 PDEBUG(D_V4L2, "Read exposure %d", *val);
284 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
286 struct sd *sd = (struct sd *) gspca_dev;
290 PDEBUG(D_V4L2, "Set exposure to %d",
294 i2c_data = (val >> 10) & 0x3f;
295 err = m5602_write_sensor(sd, OV9650_AECHM,
300 /* The 8 middle bits */
301 i2c_data = (val >> 2) & 0xff;
302 err = m5602_write_sensor(sd, OV9650_AECH,
308 i2c_data = val & 0x03;
309 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
314 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
318 struct sd *sd = (struct sd *) gspca_dev;
320 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
321 *val = (i2c_data & 0x03) << 8;
323 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
325 PDEBUG(D_V4L2, "Read gain %d", *val);
329 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
333 struct sd *sd = (struct sd *) gspca_dev;
336 /* Read the OV9650_VREF register first to avoid
337 corrupting the VREF high and low bits */
338 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
339 /* Mask away all uninteresting bits */
340 i2c_data = ((val & 0x0300) >> 2) |
342 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
345 i2c_data = val & 0xff;
346 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
350 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
354 struct sd *sd = (struct sd *) gspca_dev;
356 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
359 PDEBUG(D_V4L2, "Read red gain %d", *val);
364 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
368 struct sd *sd = (struct sd *) gspca_dev;
370 PDEBUG(D_V4L2, "Set red gain to %d",
373 i2c_data = val & 0xff;
374 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
379 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
383 struct sd *sd = (struct sd *) gspca_dev;
385 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
388 PDEBUG(D_V4L2, "Read blue gain %d", *val);
393 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
397 struct sd *sd = (struct sd *) gspca_dev;
399 PDEBUG(D_V4L2, "Set blue gain to %d",
402 i2c_data = val & 0xff;
403 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
408 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
412 struct sd *sd = (struct sd *) gspca_dev;
414 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
415 if (dmi_check_system(ov9650_flip_dmi_table))
416 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
418 *val = (i2c_data & OV9650_HFLIP) >> 5;
419 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
424 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
428 struct sd *sd = (struct sd *) gspca_dev;
430 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
431 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
435 if (dmi_check_system(ov9650_flip_dmi_table))
436 i2c_data = ((i2c_data & 0xdf) |
437 (((val ? 0 : 1) & 0x01) << 5));
439 i2c_data = ((i2c_data & 0xdf) |
440 ((val & 0x01) << 5));
442 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
447 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
451 struct sd *sd = (struct sd *) gspca_dev;
453 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
454 if (dmi_check_system(ov9650_flip_dmi_table))
455 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
457 *val = (i2c_data & 0x10) >> 4;
458 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
463 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
467 struct sd *sd = (struct sd *) gspca_dev;
469 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
470 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
474 if (dmi_check_system(ov9650_flip_dmi_table))
475 i2c_data = ((i2c_data & 0xef) |
476 (((val ? 0 : 1) & 0x01) << 4));
478 i2c_data = ((i2c_data & 0xef) |
479 ((val & 0x01) << 4));
481 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
486 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
490 struct sd *sd = (struct sd *) gspca_dev;
492 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);
504 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
508 struct sd *sd = (struct sd *) gspca_dev;
510 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
512 /* Read the OV9650_VREF register first to avoid
513 corrupting the VREF high and low bits */
514 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
518 /* Mask away all uninteresting bits */
519 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
520 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
525 i2c_data = val & 0xff;
526 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
531 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
535 struct sd *sd = (struct sd *) gspca_dev;
537 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
538 *val = (i2c_data & OV9650_AWB_EN) >> 1;
539 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
544 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
548 struct sd *sd = (struct sd *) gspca_dev;
550 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
551 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
555 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
556 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
561 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
565 struct sd *sd = (struct sd *) gspca_dev;
567 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
568 *val = (i2c_data & OV9650_AGC_EN) >> 2;
569 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
574 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
578 struct sd *sd = (struct sd *) gspca_dev;
580 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
581 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
585 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
586 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
591 static void ov9650_dump_registers(struct sd *sd)
594 info("Dumping the ov9650 register state");
595 for (address = 0; address < 0xa9; address++) {
597 m5602_read_sensor(sd, address, &value, 1);
598 info("register 0x%x contains 0x%x",
602 info("ov9650 register state dump complete");
604 info("Probing for which registers that are read/write");
605 for (address = 0; address < 0xff; address++) {
606 u8 old_value, ctrl_value;
607 u8 test_value[2] = {0xff, 0xff};
609 m5602_read_sensor(sd, address, &old_value, 1);
610 m5602_write_sensor(sd, address, test_value, 1);
611 m5602_read_sensor(sd, address, &ctrl_value, 1);
613 if (ctrl_value == test_value[0])
614 info("register 0x%x is writeable", address);
616 info("register 0x%x is read only", address);
618 /* Restore original value */
619 m5602_write_sensor(sd, address, &old_value, 1);