2 * Driver for the s5k83a 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_s5k83a.h"
21 static void s5k83a_dump_registers(struct sd *sd);
23 int s5k83a_probe(struct sd *sd)
25 u8 prod_id = 0, ver_id = 0;
29 if (force_sensor == S5K83A_SENSOR) {
30 info("Forcing a %s sensor", s5k83a.name);
33 /* If we want to force another sensor, don't try to probe this
38 info("Probing for a s5k83a sensor");
40 /* Preinit the sensor */
41 for (i = 0; i < ARRAY_SIZE(preinit_s5k83a) && !err; i++) {
42 u8 data[2] = {preinit_s5k83a[i][2], preinit_s5k83a[i][3]};
43 if (preinit_s5k83a[i][0] == SENSOR)
44 err = m5602_write_sensor(sd, preinit_s5k83a[i][1],
47 err = m5602_write_bridge(sd, preinit_s5k83a[i][1],
51 /* We don't know what register (if any) that contain the product id
52 * Just pick the first addresses that seem to produce the same results
53 * on multiple machines */
54 if (m5602_read_sensor(sd, 0x00, &prod_id, 1))
57 if (m5602_read_sensor(sd, 0x01, &ver_id, 1))
60 if ((prod_id == 0xff) || (ver_id == 0xff))
63 info("Detected a s5k83a sensor");
66 sd->gspca_dev.cam.cam_mode = s5k83a.modes;
67 sd->gspca_dev.cam.nmodes = s5k83a.nmodes;
68 sd->desc->ctrls = s5k83a.ctrls;
69 sd->desc->nctrls = s5k83a.nctrls;
73 int s5k83a_init(struct sd *sd)
77 for (i = 0; i < ARRAY_SIZE(init_s5k83a) && !err; i++) {
78 u8 data[2] = {0x00, 0x00};
80 switch (init_s5k83a[i][0]) {
82 err = m5602_write_bridge(sd,
88 data[0] = init_s5k83a[i][2];
89 err = m5602_write_sensor(sd,
90 init_s5k83a[i][1], data, 1);
94 data[0] = init_s5k83a[i][2];
95 data[1] = init_s5k83a[i][3];
96 err = m5602_write_sensor(sd,
97 init_s5k83a[i][1], data, 2);
100 info("Invalid stream command, exiting init");
106 s5k83a_dump_registers(sd);
108 return (err < 0) ? err : 0;
111 int s5k83a_start(struct sd *sd)
113 return s5k83a_set_led_indication(sd, 1);
116 int s5k83a_stop(struct sd *sd)
118 return s5k83a_set_led_indication(sd, 0);
121 int s5k83a_power_down(struct sd *sd)
126 static void s5k83a_dump_registers(struct sd *sd)
130 m5602_read_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
132 for (page = 0; page < 16; page++) {
133 m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1);
134 info("Dumping the s5k83a register state for page 0x%x", page);
135 for (address = 0; address <= 0xff; address++) {
137 m5602_read_sensor(sd, address, &val, 1);
138 info("register 0x%x contains 0x%x",
142 info("s5k83a register state dump complete");
144 for (page = 0; page < 16; page++) {
145 m5602_write_sensor(sd, S5K83A_PAGE_MAP, &page, 1);
146 info("Probing for which registers that are read/write "
147 "for page 0x%x", page);
148 for (address = 0; address <= 0xff; address++) {
149 u8 old_val, ctrl_val, test_val = 0xff;
151 m5602_read_sensor(sd, address, &old_val, 1);
152 m5602_write_sensor(sd, address, &test_val, 1);
153 m5602_read_sensor(sd, address, &ctrl_val, 1);
155 if (ctrl_val == test_val)
156 info("register 0x%x is writeable", address);
158 info("register 0x%x is read only", address);
160 /* Restore original val */
161 m5602_write_sensor(sd, address, &old_val, 1);
164 info("Read/write register probing complete");
165 m5602_write_sensor(sd, S5K83A_PAGE_MAP, &old_page, 1);
168 int s5k83a_get_brightness(struct gspca_dev *gspca_dev, __s32 *val)
172 struct sd *sd = (struct sd *) gspca_dev;
174 err = m5602_read_sensor(sd, S5K83A_BRIGHTNESS, data, 2);
178 data[1] = data[1] << 1;
184 int s5k83a_set_brightness(struct gspca_dev *gspca_dev, __s32 val)
188 struct sd *sd = (struct sd *) gspca_dev;
192 err = m5602_write_sensor(sd, 0x14, data, 2);
198 err = m5602_write_sensor(sd, 0x0d, data, 2);
202 /* FIXME: This is not sane, we need to figure out the composition
203 of these registers */
204 data[0] = val >> 3; /* brightness, high 5 bits */
205 data[1] = val >> 1; /* brightness, high 7 bits */
206 err = m5602_write_sensor(sd, S5K83A_BRIGHTNESS, data, 2);
211 int s5k83a_get_whiteness(struct gspca_dev *gspca_dev, __s32 *val)
215 struct sd *sd = (struct sd *) gspca_dev;
217 err = m5602_read_sensor(sd, S5K83A_WHITENESS, &data, 1);
226 int s5k83a_set_whiteness(struct gspca_dev *gspca_dev, __s32 val)
230 struct sd *sd = (struct sd *) gspca_dev;
233 err = m5602_write_sensor(sd, S5K83A_WHITENESS, data, 1);
238 int s5k83a_get_gain(struct gspca_dev *gspca_dev, __s32 *val)
242 struct sd *sd = (struct sd *) gspca_dev;
244 err = m5602_read_sensor(sd, S5K83A_GAIN, data, 2);
248 data[1] = data[1] & 0x3f;
249 if (data[1] > S5K83A_MAXIMUM_GAIN)
250 data[1] = S5K83A_MAXIMUM_GAIN;
257 int s5k83a_set_gain(struct gspca_dev *gspca_dev, __s32 val)
261 struct sd *sd = (struct sd *) gspca_dev;
265 err = m5602_write_sensor(sd, S5K83A_GAIN, data, 2);
269 int s5k83a_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
273 struct sd *sd = (struct sd *) gspca_dev;
276 err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
280 err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1);
281 *val = (data[0] | 0x40) ? 1 : 0;
286 int s5k83a_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
290 struct sd *sd = (struct sd *) gspca_dev;
293 err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
297 err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1);
301 /* set or zero six bit, seven is hflip */
302 data[0] = (val) ? (data[0] & 0x80) | 0x40 | S5K83A_FLIP_MASK
303 : (data[0] & 0x80) | S5K83A_FLIP_MASK;
304 err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1);
308 data[0] = (val) ? 0x0b : 0x0a;
309 err = m5602_write_sensor(sd, S5K83A_VFLIP_TUNE, data, 1);
314 int s5k83a_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
318 struct sd *sd = (struct sd *) gspca_dev;
321 err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
325 err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1);
326 *val = (data[0] | 0x80) ? 1 : 0;
331 int s5k83a_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
335 struct sd *sd = (struct sd *) gspca_dev;
338 err = m5602_write_sensor(sd, S5K83A_PAGE_MAP, data, 1);
342 err = m5602_read_sensor(sd, S5K83A_FLIP, data, 1);
346 /* set or zero seven bit, six is vflip */
347 data[0] = (val) ? (data[0] & 0x40) | 0x80 | S5K83A_FLIP_MASK
348 : (data[0] & 0x40) | S5K83A_FLIP_MASK;
349 err = m5602_write_sensor(sd, S5K83A_FLIP, data, 1);
353 data[0] = (val) ? 0x0a : 0x0b;
354 err = m5602_write_sensor(sd, S5K83A_HFLIP_TUNE, data, 1);
359 int s5k83a_set_led_indication(struct sd *sd, u8 val)
364 err = m5602_read_bridge(sd, M5602_XB_GPIO_DAT, data);
369 data[0] = data[0] | S5K83A_GPIO_LED_MASK;
371 data[0] = data[0] & ~S5K83A_GPIO_LED_MASK;
373 err = m5602_write_bridge(sd, M5602_XB_GPIO_DAT, data[0]);
375 return (err < 0) ? err : 0;