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_power_down(struct sd *sd)
149 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
150 u8 data = power_down_ov9650[i][2];
151 if (power_down_ov9650[i][0] == SENSOR)
152 err = m5602_write_sensor(sd,
153 power_down_ov9650[i][1], &data, 1);
155 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
162 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
164 struct sd *sd = (struct sd *) gspca_dev;
168 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
171 *val = i2c_data & 0x03;
173 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
176 *val |= (i2c_data << 2);
178 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
181 *val |= (i2c_data & 0x3f) << 10;
183 PDEBUG(D_V4L2, "Read exposure %d", *val);
188 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
190 struct sd *sd = (struct sd *) gspca_dev;
194 PDEBUG(D_V4L2, "Set exposure to %d",
198 i2c_data = (val >> 10) & 0x3f;
199 err = m5602_write_sensor(sd, OV9650_AECHM,
204 /* The 8 middle bits */
205 i2c_data = (val >> 2) & 0xff;
206 err = m5602_write_sensor(sd, OV9650_AECH,
212 i2c_data = val & 0x03;
213 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
219 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
223 struct sd *sd = (struct sd *) gspca_dev;
225 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
226 *val = (i2c_data & 0x03) << 8;
228 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
230 PDEBUG(D_V4L2, "Read gain %d", *val);
234 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
238 struct sd *sd = (struct sd *) gspca_dev;
241 /* Read the OV9650_VREF register first to avoid
242 corrupting the VREF high and low bits */
243 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
244 /* Mask away all uninteresting bits */
245 i2c_data = ((val & 0x0300) >> 2) |
247 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
250 i2c_data = val & 0xff;
251 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
255 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
259 struct sd *sd = (struct sd *) gspca_dev;
261 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
264 PDEBUG(D_V4L2, "Read red gain %d", *val);
269 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
273 struct sd *sd = (struct sd *) gspca_dev;
275 PDEBUG(D_V4L2, "Set red gain to %d",
278 i2c_data = val & 0xff;
279 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
284 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
288 struct sd *sd = (struct sd *) gspca_dev;
290 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
293 PDEBUG(D_V4L2, "Read blue gain %d", *val);
298 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
302 struct sd *sd = (struct sd *) gspca_dev;
304 PDEBUG(D_V4L2, "Set blue gain to %d",
307 i2c_data = val & 0xff;
308 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
313 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
317 struct sd *sd = (struct sd *) gspca_dev;
319 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
320 if (dmi_check_system(ov9650_flip_dmi_table))
321 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
323 *val = (i2c_data & OV9650_HFLIP) >> 5;
324 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
329 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
333 struct sd *sd = (struct sd *) gspca_dev;
335 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
336 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
340 if (dmi_check_system(ov9650_flip_dmi_table))
341 i2c_data = ((i2c_data & 0xdf) |
342 (((val ? 0 : 1) & 0x01) << 5));
344 i2c_data = ((i2c_data & 0xdf) |
345 ((val & 0x01) << 5));
347 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
352 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
356 struct sd *sd = (struct sd *) gspca_dev;
358 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
359 if (dmi_check_system(ov9650_flip_dmi_table))
360 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
362 *val = (i2c_data & 0x10) >> 4;
363 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
368 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
372 struct sd *sd = (struct sd *) gspca_dev;
374 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
375 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
379 if (dmi_check_system(ov9650_flip_dmi_table))
380 i2c_data = ((i2c_data & 0xef) |
381 (((val ? 0 : 1) & 0x01) << 4));
383 i2c_data = ((i2c_data & 0xef) |
384 ((val & 0x01) << 4));
386 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
391 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
395 struct sd *sd = (struct sd *) gspca_dev;
397 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
400 *val = (i2c_data & 0x03) << 8;
402 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
404 PDEBUG(D_V4L2, "Read gain %d", *val);
409 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
413 struct sd *sd = (struct sd *) gspca_dev;
415 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
417 /* Read the OV9650_VREF register first to avoid
418 corrupting the VREF high and low bits */
419 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
423 /* Mask away all uninteresting bits */
424 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
425 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
430 i2c_data = val & 0xff;
431 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
437 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
441 struct sd *sd = (struct sd *) gspca_dev;
443 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
444 *val = (i2c_data & OV9650_AWB_EN) >> 1;
445 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
450 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
454 struct sd *sd = (struct sd *) gspca_dev;
456 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
457 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
461 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
462 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
467 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
471 struct sd *sd = (struct sd *) gspca_dev;
473 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
474 *val = (i2c_data & OV9650_AGC_EN) >> 2;
475 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
480 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
484 struct sd *sd = (struct sd *) gspca_dev;
486 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
487 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
491 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
492 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
497 static void ov9650_dump_registers(struct sd *sd)
500 info("Dumping the ov9650 register state");
501 for (address = 0; address < 0xa9; address++) {
503 m5602_read_sensor(sd, address, &value, 1);
504 info("register 0x%x contains 0x%x",
508 info("ov9650 register state dump complete");
510 info("Probing for which registers that are read/write");
511 for (address = 0; address < 0xff; address++) {
512 u8 old_value, ctrl_value;
513 u8 test_value[2] = {0xff, 0xff};
515 m5602_read_sensor(sd, address, &old_value, 1);
516 m5602_write_sensor(sd, address, test_value, 1);
517 m5602_read_sensor(sd, address, &ctrl_value, 1);
519 if (ctrl_value == test_value[0])
520 info("register 0x%x is writeable", address);
522 info("register 0x%x is read only", address);
524 /* Restore original value */
525 m5602_write_sensor(sd, address, &old_value, 1);