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 = po1030.nctrls;
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 data[0] = init_po1030[i][2];
92 data[1] = init_po1030[i][3];
93 err = m5602_write_sensor(sd,
94 init_po1030[i][1], data, 2);
97 info("Invalid stream command, exiting init");
103 po1030_dump_registers(sd);
108 int po1030_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
110 struct sd *sd = (struct sd *) gspca_dev;
114 err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_H,
118 *val = (i2c_data << 8);
120 err = m5602_read_sensor(sd, PO1030_REG_INTEGLINES_M,
124 PDEBUG(D_V4L2, "Exposure read as %d", *val);
129 int po1030_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
131 struct sd *sd = (struct sd *) gspca_dev;
135 PDEBUG(D_V4L2, "Set exposure to %d", val & 0xffff);
137 i2c_data = ((val & 0xff00) >> 8);
138 PDEBUG(D_V4L2, "Set exposure to high byte to 0x%x",
141 err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_H,
146 i2c_data = (val & 0xff);
147 PDEBUG(D_V4L2, "Set exposure to low byte to 0x%x",
149 err = m5602_write_sensor(sd, PO1030_REG_INTEGLINES_M,
156 int po1030_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
158 struct sd *sd = (struct sd *) gspca_dev;
162 err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
165 PDEBUG(D_V4L2, "Read global gain %d", *val);
170 int po1030_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
172 struct sd *sd = (struct sd *) gspca_dev;
176 err = m5602_read_sensor(sd, PO1030_REG_CONTROL2,
179 *val = (i2c_data >> 7) & 0x01 ;
181 PDEBUG(D_V4L2, "Read hflip %d", *val);
186 int po1030_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
188 struct sd *sd = (struct sd *) gspca_dev;
192 PDEBUG(D_V4L2, "Set hflip %d", val);
194 i2c_data = (val & 0x01) << 7;
196 err = m5602_write_sensor(sd, PO1030_REG_CONTROL2,
202 int po1030_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
204 struct sd *sd = (struct sd *) gspca_dev;
208 err = m5602_read_sensor(sd, PO1030_REG_GLOBALGAIN,
211 *val = (i2c_data >> 6) & 0x01;
213 PDEBUG(D_V4L2, "Read vflip %d", *val);
218 int po1030_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
220 struct sd *sd = (struct sd *) gspca_dev;
224 PDEBUG(D_V4L2, "Set vflip %d", val);
226 i2c_data = (val & 0x01) << 6;
228 err = m5602_write_sensor(sd, PO1030_REG_CONTROL2,
234 int po1030_set_gain(struct gspca_dev *gspca_dev, __s32 val)
236 struct sd *sd = (struct sd *) gspca_dev;
240 i2c_data = val & 0xff;
241 PDEBUG(D_V4L2, "Set global gain to %d", i2c_data);
242 err = m5602_write_sensor(sd, PO1030_REG_GLOBALGAIN,
247 int po1030_get_red_balance(struct gspca_dev *gspca_dev, __s32 *val)
249 struct sd *sd = (struct sd *) gspca_dev;
253 err = m5602_read_sensor(sd, PO1030_REG_RED_GAIN,
256 PDEBUG(D_V4L2, "Read red gain %d", *val);
260 int po1030_set_red_balance(struct gspca_dev *gspca_dev, __s32 val)
262 struct sd *sd = (struct sd *) gspca_dev;
266 i2c_data = val & 0xff;
267 PDEBUG(D_V4L2, "Set red gain to %d", i2c_data);
268 err = m5602_write_sensor(sd, PO1030_REG_RED_GAIN,
273 int po1030_get_blue_balance(struct gspca_dev *gspca_dev, __s32 *val)
275 struct sd *sd = (struct sd *) gspca_dev;
279 err = m5602_read_sensor(sd, PO1030_REG_BLUE_GAIN,
282 PDEBUG(D_V4L2, "Read blue gain %d", *val);
287 int po1030_set_blue_balance(struct gspca_dev *gspca_dev, __s32 val)
289 struct sd *sd = (struct sd *) gspca_dev;
292 i2c_data = val & 0xff;
293 PDEBUG(D_V4L2, "Set blue gain to %d", i2c_data);
294 err = m5602_write_sensor(sd, PO1030_REG_BLUE_GAIN,
300 int po1030_power_down(struct sd *sd)
305 static void po1030_dump_registers(struct sd *sd)
310 info("Dumping the po1030 sensor core registers");
311 for (address = 0; address < 0x7f; address++) {
312 m5602_read_sensor(sd, address, &value, 1);
313 info("register 0x%x contains 0x%x",
317 info("po1030 register state dump complete");
319 info("Probing for which registers that are read/write");
320 for (address = 0; address < 0xff; address++) {
321 u8 old_value, ctrl_value;
322 u8 test_value[2] = {0xff, 0xff};
324 m5602_read_sensor(sd, address, &old_value, 1);
325 m5602_write_sensor(sd, address, test_value, 1);
326 m5602_read_sensor(sd, address, &ctrl_value, 1);
328 if (ctrl_value == test_value[0])
329 info("register 0x%x is writeable", address);
331 info("register 0x%x is read only", address);
333 /* Restore original value */
334 m5602_write_sensor(sd, address, &old_value, 1);