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], res_init_ov9650[i][2]);
158 else if (res_init_ov9650[i][0] == SENSOR) {
159 u8 data = res_init_ov9650[i][2];
160 err = m5602_write_sensor(sd, res_init_ov9650[i][1], &data, 1);
166 switch (cam->cam_mode[sd->gspca_dev.curr_mode].width)
169 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
171 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
172 if (VGA_ov9650[i][0] == SENSOR) {
173 u8 data = VGA_ov9650[i][2];
175 err = m5602_write_sensor(sd,
176 VGA_ov9650[i][1], &data, 1);
178 err = m5602_write_bridge(sd, VGA_ov9650[i][1], VGA_ov9650[i][2]);
184 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
186 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
187 if (CIF_ov9650[i][0] == SENSOR) {
188 u8 data = CIF_ov9650[i][2];
190 err = m5602_write_sensor(sd,
191 CIF_ov9650[i][1], &data, 1);
193 err = m5602_write_bridge(sd, CIF_ov9650[i][1], CIF_ov9650[i][2]);
199 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
201 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
202 if (QVGA_ov9650[i][0] == SENSOR) {
203 u8 data = QVGA_ov9650[i][2];
205 err = m5602_write_sensor(sd,
206 QVGA_ov9650[i][1], &data, 1);
208 err = m5602_write_bridge(sd, QVGA_ov9650[i][1], QVGA_ov9650[i][2]);
214 PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
216 for (i = 0; i < ARRAY_SIZE(QCIF_ov9650) && !err; i++) {
217 if (QCIF_ov9650[i][0] == SENSOR) {
218 u8 data = QCIF_ov9650[i][2];
219 err = m5602_write_sensor(sd,
220 QCIF_ov9650[i][1], &data, 1);
222 err = m5602_write_bridge(sd, QCIF_ov9650[i][1], QCIF_ov9650[i][2]);
231 int ov9650_stop(struct sd *sd)
233 u8 data = OV9650_SOFT_SLEEP | OV9650_OUTPUT_DRIVE_2X;
234 return m5602_write_sensor(sd, OV9650_COM2, &data, 1);
237 int ov9650_power_down(struct sd *sd)
240 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
241 u8 data = power_down_ov9650[i][2];
242 if (power_down_ov9650[i][0] == SENSOR)
243 err = m5602_write_sensor(sd,
244 power_down_ov9650[i][1], &data, 1);
246 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
253 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
255 struct sd *sd = (struct sd *) gspca_dev;
259 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
262 *val = i2c_data & 0x03;
264 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
267 *val |= (i2c_data << 2);
269 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
272 *val |= (i2c_data & 0x3f) << 10;
274 PDEBUG(D_V4L2, "Read exposure %d", *val);
279 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
281 struct sd *sd = (struct sd *) gspca_dev;
285 PDEBUG(D_V4L2, "Set exposure to %d",
289 i2c_data = (val >> 10) & 0x3f;
290 err = m5602_write_sensor(sd, OV9650_AECHM,
295 /* The 8 middle bits */
296 i2c_data = (val >> 2) & 0xff;
297 err = m5602_write_sensor(sd, OV9650_AECH,
303 i2c_data = val & 0x03;
304 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
309 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
313 struct sd *sd = (struct sd *) gspca_dev;
315 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
316 *val = (i2c_data & 0x03) << 8;
318 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
320 PDEBUG(D_V4L2, "Read gain %d", *val);
324 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
328 struct sd *sd = (struct sd *) gspca_dev;
331 /* Read the OV9650_VREF register first to avoid
332 corrupting the VREF high and low bits */
333 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
334 /* Mask away all uninteresting bits */
335 i2c_data = ((val & 0x0300) >> 2) |
337 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
340 i2c_data = val & 0xff;
341 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
345 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
349 struct sd *sd = (struct sd *) gspca_dev;
351 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
354 PDEBUG(D_V4L2, "Read red gain %d", *val);
359 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
363 struct sd *sd = (struct sd *) gspca_dev;
365 PDEBUG(D_V4L2, "Set red gain to %d",
368 i2c_data = val & 0xff;
369 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
374 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
378 struct sd *sd = (struct sd *) gspca_dev;
380 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
383 PDEBUG(D_V4L2, "Read blue gain %d", *val);
388 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
392 struct sd *sd = (struct sd *) gspca_dev;
394 PDEBUG(D_V4L2, "Set blue gain to %d",
397 i2c_data = val & 0xff;
398 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
403 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
407 struct sd *sd = (struct sd *) gspca_dev;
409 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
410 if (dmi_check_system(ov9650_flip_dmi_table))
411 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
413 *val = (i2c_data & OV9650_HFLIP) >> 5;
414 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
419 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
423 struct sd *sd = (struct sd *) gspca_dev;
425 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
426 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
430 if (dmi_check_system(ov9650_flip_dmi_table))
431 i2c_data = ((i2c_data & 0xdf) |
432 (((val ? 0 : 1) & 0x01) << 5));
434 i2c_data = ((i2c_data & 0xdf) |
435 ((val & 0x01) << 5));
437 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
442 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
446 struct sd *sd = (struct sd *) gspca_dev;
448 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
449 if (dmi_check_system(ov9650_flip_dmi_table))
450 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
452 *val = (i2c_data & 0x10) >> 4;
453 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
458 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
462 struct sd *sd = (struct sd *) gspca_dev;
464 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
465 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
469 if (dmi_check_system(ov9650_flip_dmi_table))
470 i2c_data = ((i2c_data & 0xef) |
471 (((val ? 0 : 1) & 0x01) << 4));
473 i2c_data = ((i2c_data & 0xef) |
474 ((val & 0x01) << 4));
476 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
481 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
485 struct sd *sd = (struct sd *) gspca_dev;
487 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
490 *val = (i2c_data & 0x03) << 8;
492 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
494 PDEBUG(D_V4L2, "Read gain %d", *val);
499 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
503 struct sd *sd = (struct sd *) gspca_dev;
505 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
507 /* Read the OV9650_VREF register first to avoid
508 corrupting the VREF high and low bits */
509 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
513 /* Mask away all uninteresting bits */
514 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
515 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
520 i2c_data = val & 0xff;
521 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
526 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
530 struct sd *sd = (struct sd *) gspca_dev;
532 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
533 *val = (i2c_data & OV9650_AWB_EN) >> 1;
534 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
539 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
543 struct sd *sd = (struct sd *) gspca_dev;
545 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
546 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
550 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
551 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
556 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
560 struct sd *sd = (struct sd *) gspca_dev;
562 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
563 *val = (i2c_data & OV9650_AGC_EN) >> 2;
564 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
569 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
573 struct sd *sd = (struct sd *) gspca_dev;
575 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
576 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
580 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
581 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
586 static void ov9650_dump_registers(struct sd *sd)
589 info("Dumping the ov9650 register state");
590 for (address = 0; address < 0xa9; address++) {
592 m5602_read_sensor(sd, address, &value, 1);
593 info("register 0x%x contains 0x%x",
597 info("ov9650 register state dump complete");
599 info("Probing for which registers that are read/write");
600 for (address = 0; address < 0xff; address++) {
601 u8 old_value, ctrl_value;
602 u8 test_value[2] = {0xff, 0xff};
604 m5602_read_sensor(sd, address, &old_value, 1);
605 m5602_write_sensor(sd, address, test_value, 1);
606 m5602_read_sensor(sd, address, &ctrl_value, 1);
608 if (ctrl_value == test_value[0])
609 info("register 0x%x is writeable", address);
611 info("register 0x%x is read only", address);
613 /* Restore original value */
614 m5602_write_sensor(sd, address, &old_value, 1);