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 = ov9650.nctrls;
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 switch (cam->cam_mode[sd->gspca_dev.curr_mode].width)
154 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
156 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
157 u8 data = VGA_ov9650[i][2];
158 if (VGA_ov9650[i][0] == SENSOR)
159 err = m5602_write_sensor(sd,
160 VGA_ov9650[i][1], &data, 1);
162 err = m5602_write_bridge(sd, VGA_ov9650[i][1], data);
167 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
169 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
170 u8 data = CIF_ov9650[i][2];
171 if (CIF_ov9650[i][0] == SENSOR)
172 err = m5602_write_sensor(sd,
173 CIF_ov9650[i][1], &data, 1);
175 err = m5602_write_bridge(sd, CIF_ov9650[i][1], data);
180 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
182 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
183 u8 data = QVGA_ov9650[i][2];
184 if (QVGA_ov9650[i][0] == SENSOR)
185 err = m5602_write_sensor(sd,
186 QVGA_ov9650[i][1], &data, 1);
188 err = m5602_write_bridge(sd, QVGA_ov9650[i][1], data);
195 int ov9650_power_down(struct sd *sd)
198 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
199 u8 data = power_down_ov9650[i][2];
200 if (power_down_ov9650[i][0] == SENSOR)
201 err = m5602_write_sensor(sd,
202 power_down_ov9650[i][1], &data, 1);
204 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
211 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
213 struct sd *sd = (struct sd *) gspca_dev;
217 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
220 *val = i2c_data & 0x03;
222 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
225 *val |= (i2c_data << 2);
227 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
230 *val |= (i2c_data & 0x3f) << 10;
232 PDEBUG(D_V4L2, "Read exposure %d", *val);
237 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
239 struct sd *sd = (struct sd *) gspca_dev;
243 PDEBUG(D_V4L2, "Set exposure to %d",
247 i2c_data = (val >> 10) & 0x3f;
248 err = m5602_write_sensor(sd, OV9650_AECHM,
253 /* The 8 middle bits */
254 i2c_data = (val >> 2) & 0xff;
255 err = m5602_write_sensor(sd, OV9650_AECH,
261 i2c_data = val & 0x03;
262 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
268 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
272 struct sd *sd = (struct sd *) gspca_dev;
274 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
275 *val = (i2c_data & 0x03) << 8;
277 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
279 PDEBUG(D_V4L2, "Read gain %d", *val);
283 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
287 struct sd *sd = (struct sd *) gspca_dev;
290 /* Read the OV9650_VREF register first to avoid
291 corrupting the VREF high and low bits */
292 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
293 /* Mask away all uninteresting bits */
294 i2c_data = ((val & 0x0300) >> 2) |
296 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
299 i2c_data = val & 0xff;
300 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
304 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
308 struct sd *sd = (struct sd *) gspca_dev;
310 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
313 PDEBUG(D_V4L2, "Read red gain %d", *val);
318 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
322 struct sd *sd = (struct sd *) gspca_dev;
324 PDEBUG(D_V4L2, "Set red gain to %d",
327 i2c_data = val & 0xff;
328 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
333 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
337 struct sd *sd = (struct sd *) gspca_dev;
339 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
342 PDEBUG(D_V4L2, "Read blue gain %d", *val);
347 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
351 struct sd *sd = (struct sd *) gspca_dev;
353 PDEBUG(D_V4L2, "Set blue gain to %d",
356 i2c_data = val & 0xff;
357 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
362 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
366 struct sd *sd = (struct sd *) gspca_dev;
368 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
369 if (dmi_check_system(ov9650_flip_dmi_table))
370 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
372 *val = (i2c_data & OV9650_HFLIP) >> 5;
373 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
378 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
382 struct sd *sd = (struct sd *) gspca_dev;
384 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
385 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
389 if (dmi_check_system(ov9650_flip_dmi_table))
390 i2c_data = ((i2c_data & 0xdf) |
391 (((val ? 0 : 1) & 0x01) << 5));
393 i2c_data = ((i2c_data & 0xdf) |
394 ((val & 0x01) << 5));
396 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
401 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
405 struct sd *sd = (struct sd *) gspca_dev;
407 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
408 if (dmi_check_system(ov9650_flip_dmi_table))
409 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
411 *val = (i2c_data & 0x10) >> 4;
412 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
417 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
421 struct sd *sd = (struct sd *) gspca_dev;
423 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
424 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
428 if (dmi_check_system(ov9650_flip_dmi_table))
429 i2c_data = ((i2c_data & 0xef) |
430 (((val ? 0 : 1) & 0x01) << 4));
432 i2c_data = ((i2c_data & 0xef) |
433 ((val & 0x01) << 4));
435 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
440 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
444 struct sd *sd = (struct sd *) gspca_dev;
446 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
449 *val = (i2c_data & 0x03) << 8;
451 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
453 PDEBUG(D_V4L2, "Read gain %d", *val);
458 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
462 struct sd *sd = (struct sd *) gspca_dev;
464 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
466 /* Read the OV9650_VREF register first to avoid
467 corrupting the VREF high and low bits */
468 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
472 /* Mask away all uninteresting bits */
473 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
474 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
479 i2c_data = val & 0xff;
480 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
486 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
490 struct sd *sd = (struct sd *) gspca_dev;
492 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
493 *val = (i2c_data & OV9650_AWB_EN) >> 1;
494 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
499 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
503 struct sd *sd = (struct sd *) gspca_dev;
505 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
506 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
510 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
511 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
516 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
520 struct sd *sd = (struct sd *) gspca_dev;
522 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
523 *val = (i2c_data & OV9650_AGC_EN) >> 2;
524 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
529 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
533 struct sd *sd = (struct sd *) gspca_dev;
535 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
536 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
540 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
541 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
546 static void ov9650_dump_registers(struct sd *sd)
549 info("Dumping the ov9650 register state");
550 for (address = 0; address < 0xa9; address++) {
552 m5602_read_sensor(sd, address, &value, 1);
553 info("register 0x%x contains 0x%x",
557 info("ov9650 register state dump complete");
559 info("Probing for which registers that are read/write");
560 for (address = 0; address < 0xff; address++) {
561 u8 old_value, ctrl_value;
562 u8 test_value[2] = {0xff, 0xff};
564 m5602_read_sensor(sd, address, &old_value, 1);
565 m5602_write_sensor(sd, address, test_value, 1);
566 m5602_read_sensor(sd, address, &ctrl_value, 1);
568 if (ctrl_value == test_value[0])
569 info("register 0x%x is writeable", address);
571 info("register 0x%x is read only", address);
573 /* Restore original value */
574 m5602_write_sensor(sd, address, &old_value, 1);