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);
199 PDEBUG(D_V4L2, "Configuring camera for QCIF mode");
201 for (i = 0; i < ARRAY_SIZE(QCIF_ov9650) && !err; i++) {
202 u8 data = QCIF_ov9650[i][2];
203 if (QCIF_ov9650[i][0] == SENSOR)
204 err = m5602_write_sensor(sd,
205 QCIF_ov9650[i][1], &data, 1);
207 err = m5602_write_bridge(sd, QCIF_ov9650[i][1], data);
215 int ov9650_power_down(struct sd *sd)
218 for (i = 0; i < ARRAY_SIZE(power_down_ov9650) && !err; i++) {
219 u8 data = power_down_ov9650[i][2];
220 if (power_down_ov9650[i][0] == SENSOR)
221 err = m5602_write_sensor(sd,
222 power_down_ov9650[i][1], &data, 1);
224 err = m5602_write_bridge(sd, power_down_ov9650[i][1],
231 int ov9650_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
233 struct sd *sd = (struct sd *) gspca_dev;
237 err = m5602_read_sensor(sd, OV9650_COM1, &i2c_data, 1);
240 *val = i2c_data & 0x03;
242 err = m5602_read_sensor(sd, OV9650_AECH, &i2c_data, 1);
245 *val |= (i2c_data << 2);
247 err = m5602_read_sensor(sd, OV9650_AECHM, &i2c_data, 1);
250 *val |= (i2c_data & 0x3f) << 10;
252 PDEBUG(D_V4L2, "Read exposure %d", *val);
257 int ov9650_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
259 struct sd *sd = (struct sd *) gspca_dev;
263 PDEBUG(D_V4L2, "Set exposure to %d",
267 i2c_data = (val >> 10) & 0x3f;
268 err = m5602_write_sensor(sd, OV9650_AECHM,
273 /* The 8 middle bits */
274 i2c_data = (val >> 2) & 0xff;
275 err = m5602_write_sensor(sd, OV9650_AECH,
281 i2c_data = val & 0x03;
282 err = m5602_write_sensor(sd, OV9650_COM1, &i2c_data, 1);
287 int ov9650_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
291 struct sd *sd = (struct sd *) gspca_dev;
293 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
294 *val = (i2c_data & 0x03) << 8;
296 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
298 PDEBUG(D_V4L2, "Read gain %d", *val);
302 int ov9650_set_gain(struct gspca_dev *gspca_dev, __s32 val)
306 struct sd *sd = (struct sd *) gspca_dev;
309 /* Read the OV9650_VREF register first to avoid
310 corrupting the VREF high and low bits */
311 m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
312 /* Mask away all uninteresting bits */
313 i2c_data = ((val & 0x0300) >> 2) |
315 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
318 i2c_data = val & 0xff;
319 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
323 int ov9650_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
327 struct sd *sd = (struct sd *) gspca_dev;
329 err = m5602_read_sensor(sd, OV9650_RED, &i2c_data, 1);
332 PDEBUG(D_V4L2, "Read red gain %d", *val);
337 int ov9650_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
341 struct sd *sd = (struct sd *) gspca_dev;
343 PDEBUG(D_V4L2, "Set red gain to %d",
346 i2c_data = val & 0xff;
347 err = m5602_write_sensor(sd, OV9650_RED, &i2c_data, 1);
352 int ov9650_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
356 struct sd *sd = (struct sd *) gspca_dev;
358 err = m5602_read_sensor(sd, OV9650_BLUE, &i2c_data, 1);
361 PDEBUG(D_V4L2, "Read blue gain %d", *val);
366 int ov9650_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
370 struct sd *sd = (struct sd *) gspca_dev;
372 PDEBUG(D_V4L2, "Set blue gain to %d",
375 i2c_data = val & 0xff;
376 err = m5602_write_sensor(sd, OV9650_BLUE, &i2c_data, 1);
381 int ov9650_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
385 struct sd *sd = (struct sd *) gspca_dev;
387 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
388 if (dmi_check_system(ov9650_flip_dmi_table))
389 *val = ((i2c_data & OV9650_HFLIP) >> 5) ? 0 : 1;
391 *val = (i2c_data & OV9650_HFLIP) >> 5;
392 PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
397 int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
401 struct sd *sd = (struct sd *) gspca_dev;
403 PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
404 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
408 if (dmi_check_system(ov9650_flip_dmi_table))
409 i2c_data = ((i2c_data & 0xdf) |
410 (((val ? 0 : 1) & 0x01) << 5));
412 i2c_data = ((i2c_data & 0xdf) |
413 ((val & 0x01) << 5));
415 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
420 int ov9650_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
424 struct sd *sd = (struct sd *) gspca_dev;
426 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
427 if (dmi_check_system(ov9650_flip_dmi_table))
428 *val = ((i2c_data & 0x10) >> 4) ? 0 : 1;
430 *val = (i2c_data & 0x10) >> 4;
431 PDEBUG(D_V4L2, "Read vertical flip %d", *val);
436 int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
440 struct sd *sd = (struct sd *) gspca_dev;
442 PDEBUG(D_V4L2, "Set vertical flip to %d", val);
443 err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1);
447 if (dmi_check_system(ov9650_flip_dmi_table))
448 i2c_data = ((i2c_data & 0xef) |
449 (((val ? 0 : 1) & 0x01) << 4));
451 i2c_data = ((i2c_data & 0xef) |
452 ((val & 0x01) << 4));
454 err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1);
459 int ov9650_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
463 struct sd *sd = (struct sd *) gspca_dev;
465 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
468 *val = (i2c_data & 0x03) << 8;
470 err = m5602_read_sensor(sd, OV9650_GAIN, &i2c_data, 1);
472 PDEBUG(D_V4L2, "Read gain %d", *val);
477 int ov9650_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
481 struct sd *sd = (struct sd *) gspca_dev;
483 PDEBUG(D_V4L2, "Set gain to %d", val & 0x3ff);
485 /* Read the OV9650_VREF register first to avoid
486 corrupting the VREF high and low bits */
487 err = m5602_read_sensor(sd, OV9650_VREF, &i2c_data, 1);
491 /* Mask away all uninteresting bits */
492 i2c_data = ((val & 0x0300) >> 2) | (i2c_data & 0x3F);
493 err = m5602_write_sensor(sd, OV9650_VREF, &i2c_data, 1);
498 i2c_data = val & 0xff;
499 err = m5602_write_sensor(sd, OV9650_GAIN, &i2c_data, 1);
504 int ov9650_get_auto_white_balance(struct gspca_dev *gspca_dev, __s32 *val)
508 struct sd *sd = (struct sd *) gspca_dev;
510 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
511 *val = (i2c_data & OV9650_AWB_EN) >> 1;
512 PDEBUG(D_V4L2, "Read auto white balance %d", *val);
517 int ov9650_set_auto_white_balance(struct gspca_dev *gspca_dev, __s32 val)
521 struct sd *sd = (struct sd *) gspca_dev;
523 PDEBUG(D_V4L2, "Set auto white balance to %d", val);
524 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
528 i2c_data = ((i2c_data & 0xfd) | ((val & 0x01) << 1));
529 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
534 int ov9650_get_auto_gain(struct gspca_dev *gspca_dev, __s32 *val)
538 struct sd *sd = (struct sd *) gspca_dev;
540 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
541 *val = (i2c_data & OV9650_AGC_EN) >> 2;
542 PDEBUG(D_V4L2, "Read auto gain control %d", *val);
547 int ov9650_set_auto_gain(struct gspca_dev *gspca_dev, __s32 val)
551 struct sd *sd = (struct sd *) gspca_dev;
553 PDEBUG(D_V4L2, "Set auto gain control to %d", val);
554 err = m5602_read_sensor(sd, OV9650_COM8, &i2c_data, 1);
558 i2c_data = ((i2c_data & 0xfb) | ((val & 0x01) << 2));
559 err = m5602_write_sensor(sd, OV9650_COM8, &i2c_data, 1);
564 static void ov9650_dump_registers(struct sd *sd)
567 info("Dumping the ov9650 register state");
568 for (address = 0; address < 0xa9; address++) {
570 m5602_read_sensor(sd, address, &value, 1);
571 info("register 0x%x contains 0x%x",
575 info("ov9650 register state dump complete");
577 info("Probing for which registers that are read/write");
578 for (address = 0; address < 0xff; address++) {
579 u8 old_value, ctrl_value;
580 u8 test_value[2] = {0xff, 0xff};
582 m5602_read_sensor(sd, address, &old_value, 1);
583 m5602_write_sensor(sd, address, test_value, 1);
584 m5602_read_sensor(sd, address, &ctrl_value, 1);
586 if (ctrl_value == test_value[0])
587 info("register 0x%x is writeable", address);
589 info("register 0x%x is read only", address);
591 /* Restore original value */
592 m5602_write_sensor(sd, address, &old_value, 1);