2 * Driver for the po1030 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_po1030.h"
21 static void po1030_dump_registers(struct sd *sd);
23 int po1030_probe(struct sd *sd)
25 u8 prod_id = 0, ver_id = 0, i;
28 if (force_sensor == PO1030_SENSOR) {
29 info("Forcing a %s sensor", po1030.name);
32 /* If we want to force another sensor, don't try to probe this
37 info("Probing for a po1030 sensor");
39 /* Run the pre-init to actually probe the unit */
40 for (i = 0; i < ARRAY_SIZE(preinit_po1030); i++) {
41 u8 data = preinit_po1030[i][2];
42 if (preinit_po1030[i][0] == SENSOR)
43 m5602_write_sensor(sd,
44 preinit_po1030[i][1], &data, 1);
46 m5602_write_bridge(sd, preinit_po1030[i][1], data);
49 if (m5602_read_sensor(sd, 0x3, &prod_id, 1))
52 if (m5602_read_sensor(sd, 0x4, &ver_id, 1))
55 if ((prod_id == 0x02) && (ver_id == 0xef)) {
56 info("Detected a po1030 sensor");
62 sd->gspca_dev.cam.cam_mode = po1030.modes;
63 sd->gspca_dev.cam.nmodes = po1030.nmodes;
64 sd->desc->ctrls = po1030.ctrls;
65 sd->desc->nctrls = ARRAY_SIZE(po1030_ctrls);
69 int po1030_init(struct sd *sd)
74 for (i = 0; i < ARRAY_SIZE(init_po1030) && !err; i++) {
75 u8 data[2] = {0x00, 0x00};
77 switch (init_po1030[i][0]) {
79 err = m5602_write_bridge(sd,
85 data[0] = init_po1030[i][2];
86 err = m5602_write_sensor(sd,
87 init_po1030[i][1], data, 1);
91 info("Invalid stream command, exiting init");
97 po1030_dump_registers(sd);
102 int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
104 struct sd *sd = (struct sd *) gspca_dev;
108 err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_H,
112 *val = (i2c_data << 8);
114 err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_M,
118 PDEBUG(D_V4L2, "Exposure read as %d", *val);
123 int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
125 struct sd *sd = (struct sd *) gspca_dev;
129 PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff);
131 i2c_data = ((val & 0xff00) >> 8);
132 PDEBUG(D_V4L2, "Set exposure to high byte to 0x%x",
135 err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_H,
140 i2c_data = (val & 0xff);
141 PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x",
143 err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_M,
149 int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
151 struct sd *sd = (struct sd *) gspca_dev;
155 err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
158 PDEBUG(D_V4L2, "Read global gain %d", *val);
163 int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
165 struct sd *sd = (struct sd *) gspca_dev;
169 err = m5602_read_sensor(sd, PO1030_REG_CONTROL2,
172 *val = (i2c_data >> 7) & 0x01 ;
174 PDEBUG(D_V4L2, "Read hflip %d", *val);
179 int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
181 struct sd *sd = (struct sd *) gspca_dev;
185 PDEBUG(D_V4L2, "Set hflip %d", val);
186 err = m5602_read_sensor(sd, PO1030_REG_CONTROL2, &i2c_data, 1);
190 i2c_data = (0x7f & i2c_data) | ((val & 0x01) << 7);
192 err = m5602_write_sensor(sd, PO1030_REG_CONTROL2,
198 int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
200 struct sd *sd = (struct sd *) gspca_dev;
204 err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
207 *val = (i2c_data >> 6) & 0x01;
209 PDEBUG(D_V4L2, "Read vflip %d", *val);
214 int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
216 struct sd *sd = (struct sd *) gspca_dev;
220 PDEBUG(D_V4L2, "Set vflip %d", val);
221 err = m5602_read_sensor(sd, PO1030_REG_CONTROL2, &i2c_data, 1);
225 i2c_data = (i2c_data & 0xbf) | ((val & 0x01) << 6);
227 err = m5602_write_sensor(sd, PO1030_REG_CONTROL2,
233 int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
235 struct sd *sd = (struct sd *) gspca_dev;
239 i2c_data = val & 0xff;
240 PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
241 err = m5602_write_sensor(sd, PO1030_REG_GLOBALGAIN,
246 int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
248 struct sd *sd = (struct sd *) gspca_dev;
252 err = m5602_read_sensor(sd, PO1030_REG_RED_GAIN,
255 PDEBUG(D_V4L2, "Read red gain %d", *val);
259 int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
261 struct sd *sd = (struct sd *) gspca_dev;
265 i2c_data = val & 0xff;
266 PDEBUG(D_V4L2, "Set red gain to %d", i2c_data);
267 err = m5602_write_sensor(sd, PO1030_REG_RED_GAIN,
272 int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
274 struct sd *sd = (struct sd *) gspca_dev;
278 err = m5602_read_sensor(sd, PO1030_REG_BLUE_GAIN,
281 PDEBUG(D_V4L2, "Read blue gain %d", *val);
286 int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
288 struct sd *sd = (struct sd *) gspca_dev;
291 i2c_data = val & 0xff;
292 PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data);
293 err = m5602_write_sensor(sd, PO1030_REG_BLUE_GAIN,
299 int po1030_power_down(struct sd *sd)
304 static void po1030_dump_registers(struct sd *sd)
309 info("Dumping the po1030 sensor core registers");
310 for (address = 0; address < 0x7f; address++) {
311 m5602_read_sensor(sd, address, &value, 1);
312 info("register 0x%x contains 0x%x",
316 info("po1030 register state dump complete");
318 info("Probing for which registers that are read/write");
319 for (address = 0; address < 0xff; address++) {
320 u8 old_value, ctrl_value;
321 u8 test_value[2] = {0xff, 0xff};
323 m5602_read_sensor(sd, address, &old_value, 1);
324 m5602_write_sensor(sd, address, test_value, 1);
325 m5602_read_sensor(sd, address, &ctrl_value, 1);
327 if (ctrl_value == test_value[0])
328 info("register 0x%x is writeable", address);
330 info("register 0x%x is read only", address);
332 /* Restore original value */
333 m5602_write_sensor(sd, address, &old_value, 1);