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);
145 int ov9650_start(struct sd *sd)
148 struct cam *cam = &sd->gspca_dev.cam;
150 for (i = 0; i < ARRAY_SIZE(res_init_ov9650) && !err; i++) {
151 u8 data = res_init_ov9650[i][1];
152 err = m5602_write_bridge(sd, res_init_ov9650[i][0], data);
157 switch (cam->cam_mode[sd->gspca_dev.curr_mode].width)
160 PDEBUG(D_V4L2, "Configuring camera for VGA mode");
162 for (i = 0; i < ARRAY_SIZE(VGA_ov9650) && !err; i++) {
163 u8 data = VGA_ov9650[i][2];
164 if (VGA_ov9650[i][0] == SENSOR)
165 err = m5602_write_sensor(sd,
166 VGA_ov9650[i][1], &data, 1);
168 err = m5602_write_bridge(sd, VGA_ov9650[i][1], data);
173 PDEBUG(D_V4L2, "Configuring camera for CIF mode");
175 for (i = 0; i < ARRAY_SIZE(CIF_ov9650) && !err; i++) {
176 u8 data = CIF_ov9650[i][2];
177 if (CIF_ov9650[i][0] == SENSOR)
178 err = m5602_write_sensor(sd,
179 CIF_ov9650[i][1], &data, 1);
181 err = m5602_write_bridge(sd, CIF_ov9650[i][1], data);
186 PDEBUG(D_V4L2, "Configuring camera for QVGA mode");
188 for (i = 0; i < ARRAY_SIZE(QVGA_ov9650) && !err; i++) {
189 u8 data = QVGA_ov9650[i][2];
190 if (QVGA_ov9650[i][0] == SENSOR)
191 err = m5602_write_sensor(sd,
192 QVGA_ov9650[i][1], &data, 1);
194 err = m5602_write_bridge(sd, QVGA_ov9650[i][1], data);
201 int ov9650_power_down(struct sd *sd)
204 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
205 u8 data = power_down_ov9650[i][2];
206 if (power_down_ov9650[i][0] == SENSOR)
207 err = m5602_write_sensor(sd,
208 power_down_ov9650[i][1], &data, 1);
210 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
217 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
219 struct sd *sd = (struct sd *) gspca_dev;
223 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
226 *val = i2c_data & 0x03;
228 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
231 *val |= (i2c_data << 2);
233 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
236 *val |= (i2c_data & 0x3f) << 10;
238 PDEBUG(D_V4L2, "Read exposure %d", *val);
243 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
245 struct sd *sd = (struct sd *) gspca_dev;
249 PDEBUG(D_V4L2, "Set exposure to %d",
253 i2c_data = (val >> 10) & 0x3f;
254 err = m5602_write_sensor(sd, OV9650_AECHM,
259 /* The 8 middle bits */
260 i2c_data = (val >> 2) & 0xff;
261 err = m5602_write_sensor(sd, OV9650_AECH,
267 i2c_data = val & 0x03;
268 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
274 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
278 struct sd *sd = (struct sd *) gspca_dev;
280 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
281 *val = (i2c_data & 0x03) << 8;
283 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
285 PDEBUG(D_V4L2, "Read gain %d", *val);
289 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
293 struct sd *sd = (struct sd *) gspca_dev;
296 /* Read the OV9650_VREF register first to avoid
297 corrupting the VREF high and low bits */
298 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
299 /* Mask away all uninteresting bits */
300 i2c_data = ((val & 0x0300) >> 2) |
302 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
305 i2c_data = val & 0xff;
306 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
310 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
314 struct sd *sd = (struct sd *) gspca_dev;
316 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
319 PDEBUG(D_V4L2, "Read red gain %d", *val);
324 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
328 struct sd *sd = (struct sd *) gspca_dev;
330 PDEBUG(D_V4L2, "Set red gain to %d",
333 i2c_data = val & 0xff;
334 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
339 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
343 struct sd *sd = (struct sd *) gspca_dev;
345 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
348 PDEBUG(D_V4L2, "Read blue gain %d", *val);
353 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
357 struct sd *sd = (struct sd *) gspca_dev;
359 PDEBUG(D_V4L2, "Set blue gain to %d",
362 i2c_data = val & 0xff;
363 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
368 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
372 struct sd *sd = (struct sd *) gspca_dev;
374 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
375 if (dmi_check_system(ov9650_flip_dmi_table))
376 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
378 *val = (i2c_data & OV9650_HFLIP) >> 5;
379 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
384 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
388 struct sd *sd = (struct sd *) gspca_dev;
390 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
391 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
395 if (dmi_check_system(ov9650_flip_dmi_table))
396 i2c_data = ((i2c_data & 0xdf) |
397 (((val ? 0 : 1) & 0x01) << 5));
399 i2c_data = ((i2c_data & 0xdf) |
400 ((val & 0x01) << 5));
402 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
407 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
411 struct sd *sd = (struct sd *) gspca_dev;
413 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
414 if (dmi_check_system(ov9650_flip_dmi_table))
415 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
417 *val = (i2c_data & 0x10) >> 4;
418 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
423 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
427 struct sd *sd = (struct sd *) gspca_dev;
429 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
430 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
434 if (dmi_check_system(ov9650_flip_dmi_table))
435 i2c_data = ((i2c_data & 0xef) |
436 (((val ? 0 : 1) & 0x01) << 4));
438 i2c_data = ((i2c_data & 0xef) |
439 ((val & 0x01) << 4));
441 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
446 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
450 struct sd *sd = (struct sd *) gspca_dev;
452 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
455 *val = (i2c_data & 0x03) << 8;
457 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
459 PDEBUG(D_V4L2, "Read gain %d", *val);
464 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
468 struct sd *sd = (struct sd *) gspca_dev;
470 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
472 /* Read the OV9650_VREF register first to avoid
473 corrupting the VREF high and low bits */
474 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
478 /* Mask away all uninteresting bits */
479 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
480 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
485 i2c_data = val & 0xff;
486 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
492 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
496 struct sd *sd = (struct sd *) gspca_dev;
498 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
499 *val = (i2c_data & OV9650_AWB_EN) >> 1;
500 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
505 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
509 struct sd *sd = (struct sd *) gspca_dev;
511 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
512 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
516 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
517 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
522 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
526 struct sd *sd = (struct sd *) gspca_dev;
528 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
529 *val = (i2c_data & OV9650_AGC_EN) >> 2;
530 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
535 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
539 struct sd *sd = (struct sd *) gspca_dev;
541 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
542 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
546 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
547 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
552 static void ov9650_dump_registers(struct sd *sd)
555 info("Dumping the ov9650 register state");
556 for (address = 0; address < 0xa9; address++) {
558 m5602_read_sensor(sd, address, &value, 1);
559 info("register 0x%x contains 0x%x",
563 info("ov9650 register state dump complete");
565 info("Probing for which registers that are read/write");
566 for (address = 0; address < 0xff; address++) {
567 u8 old_value, ctrl_value;
568 u8 test_value[2] = {0xff, 0xff};
570 m5602_read_sensor(sd, address, &old_value, 1);
571 m5602_write_sensor(sd, address, test_value, 1);
572 m5602_read_sensor(sd, address, &ctrl_value, 1);
574 if (ctrl_value == test_value[0])
575 info("register 0x%x is writeable", address);
577 info("register 0x%x is read only", address);
579 /* Restore original value */
580 m5602_write_sensor(sd, address, &old_value, 1);