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)
155 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
157 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
158 u8 data = VGA_ov9650[i][2];
159 if (VGA_ov9650[i][0] == SENSOR)
160 err = m5602_write_sensor(sd,
161 VGA_ov9650[i][1], &data, 1);
163 err = m5602_write_bridge(sd, VGA_ov9650[i][1], data);
170 int ov9650_power_down(struct sd *sd)
173 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
174 u8 data = power_down_ov9650[i][2];
175 if (power_down_ov9650[i][0] == SENSOR)
176 err = m5602_write_sensor(sd,
177 power_down_ov9650[i][1], &data, 1);
179 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
186 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
188 struct sd *sd = (struct sd *) gspca_dev;
192 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
195 *val = i2c_data & 0x03;
197 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
200 *val |= (i2c_data << 2);
202 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
205 *val |= (i2c_data & 0x3f) << 10;
207 PDEBUG(D_V4L2, "Read exposure %d", *val);
212 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
214 struct sd *sd = (struct sd *) gspca_dev;
218 PDEBUG(D_V4L2, "Set exposure to %d",
222 i2c_data = (val >> 10) & 0x3f;
223 err = m5602_write_sensor(sd, OV9650_AECHM,
228 /* The 8 middle bits */
229 i2c_data = (val >> 2) & 0xff;
230 err = m5602_write_sensor(sd, OV9650_AECH,
236 i2c_data = val & 0x03;
237 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
243 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
247 struct sd *sd = (struct sd *) gspca_dev;
249 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
250 *val = (i2c_data & 0x03) << 8;
252 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
254 PDEBUG(D_V4L2, "Read gain %d", *val);
258 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
262 struct sd *sd = (struct sd *) gspca_dev;
265 /* Read the OV9650_VREF register first to avoid
266 corrupting the VREF high and low bits */
267 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
268 /* Mask away all uninteresting bits */
269 i2c_data = ((val & 0x0300) >> 2) |
271 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
274 i2c_data = val & 0xff;
275 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
279 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
283 struct sd *sd = (struct sd *) gspca_dev;
285 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
288 PDEBUG(D_V4L2, "Read red gain %d", *val);
293 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
297 struct sd *sd = (struct sd *) gspca_dev;
299 PDEBUG(D_V4L2, "Set red gain to %d",
302 i2c_data = val & 0xff;
303 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
308 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
312 struct sd *sd = (struct sd *) gspca_dev;
314 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
317 PDEBUG(D_V4L2, "Read blue gain %d", *val);
322 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
326 struct sd *sd = (struct sd *) gspca_dev;
328 PDEBUG(D_V4L2, "Set blue gain to %d",
331 i2c_data = val & 0xff;
332 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
337 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
341 struct sd *sd = (struct sd *) gspca_dev;
343 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
344 if (dmi_check_system(ov9650_flip_dmi_table))
345 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
347 *val = (i2c_data & OV9650_HFLIP) >> 5;
348 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
353 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
357 struct sd *sd = (struct sd *) gspca_dev;
359 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
360 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
364 if (dmi_check_system(ov9650_flip_dmi_table))
365 i2c_data = ((i2c_data & 0xdf) |
366 (((val ? 0 : 1) & 0x01) << 5));
368 i2c_data = ((i2c_data & 0xdf) |
369 ((val & 0x01) << 5));
371 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
376 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
380 struct sd *sd = (struct sd *) gspca_dev;
382 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
383 if (dmi_check_system(ov9650_flip_dmi_table))
384 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
386 *val = (i2c_data & 0x10) >> 4;
387 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
392 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
396 struct sd *sd = (struct sd *) gspca_dev;
398 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
399 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
403 if (dmi_check_system(ov9650_flip_dmi_table))
404 i2c_data = ((i2c_data & 0xef) |
405 (((val ? 0 : 1) & 0x01) << 4));
407 i2c_data = ((i2c_data & 0xef) |
408 ((val & 0x01) << 4));
410 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
415 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
419 struct sd *sd = (struct sd *) gspca_dev;
421 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
424 *val = (i2c_data & 0x03) << 8;
426 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
428 PDEBUG(D_V4L2, "Read gain %d", *val);
433 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
437 struct sd *sd = (struct sd *) gspca_dev;
439 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
441 /* Read the OV9650_VREF register first to avoid
442 corrupting the VREF high and low bits */
443 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
447 /* Mask away all uninteresting bits */
448 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
449 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
454 i2c_data = val & 0xff;
455 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
461 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
465 struct sd *sd = (struct sd *) gspca_dev;
467 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
468 *val = (i2c_data & OV9650_AWB_EN) >> 1;
469 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
474 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
478 struct sd *sd = (struct sd *) gspca_dev;
480 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
481 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
485 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
486 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
491 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
495 struct sd *sd = (struct sd *) gspca_dev;
497 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
498 *val = (i2c_data & OV9650_AGC_EN) >> 2;
499 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
504 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
508 struct sd *sd = (struct sd *) gspca_dev;
510 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
511 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
515 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
516 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
521 static void ov9650_dump_registers(struct sd *sd)
524 info("Dumping the ov9650 register state");
525 for (address = 0; address < 0xa9; address++) {
527 m5602_read_sensor(sd, address, &value, 1);
528 info("register 0x%x contains 0x%x",
532 info("ov9650 register state dump complete");
534 info("Probing for which registers that are read/write");
535 for (address = 0; address < 0xff; address++) {
536 u8 old_value, ctrl_value;
537 u8 test_value[2] = {0xff, 0xff};
539 m5602_read_sensor(sd, address, &old_value, 1);
540 m5602_write_sensor(sd, address, test_value, 1);
541 m5602_read_sensor(sd, address, &ctrl_value, 1);
543 if (ctrl_value == test_value[0])
544 info("register 0x%x is writeable", address);
546 info("register 0x%x is read only", address);
548 /* Restore original value */
549 m5602_write_sensor(sd, address, &old_value, 1);