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/*
* Copyright (c) 2001 Jean-Fredric Clere, Nikolas Zimmermann, Georg Acher
* Mark Cave-Ayland, Carlo E Prelz, Dick Streefland
* Copyright (c) 2002, 2003 Tuukka Toivonen
* Copyright (c) 2008 Erik Andrén
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* P/N 861037: Sensor HDCS1000 ASIC STV0600
* P/N 861050-0010: Sensor HDCS1000 ASIC STV0600
* P/N 861050-0020: Sensor Photobit PB100 ASIC STV0600-1 - QuickCam Express
* P/N 861055: Sensor ST VV6410 ASIC STV0610 - LEGO cam
* P/N 861075-0040: Sensor HDCS1000 ASIC
* P/N 961179-0700: Sensor ST VV6410 ASIC STV0602 - Dexxa WebCam USB
* P/N 861040-0000: Sensor ST VV6410 ASIC STV0610 - QuickCam Web
*/
#include "stv06xx_vv6410.h"
static struct v4l2_pix_format vv6410_mode[] = {
{
356,
292,
V4L2_PIX_FMT_SGRBG8,
V4L2_FIELD_NONE,
.sizeimage = 356 * 292,
.bytesperline = 356,
.colorspace = V4L2_COLORSPACE_SRGB,
.priv = 0
}
};
static const struct ctrl vv6410_ctrl[] = {
#define HFLIP_IDX 0
{
{
.id = V4L2_CID_HFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "horizontal flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0
},
.set = vv6410_set_hflip,
.get = vv6410_get_hflip
},
#define VFLIP_IDX 1
{
{
.id = V4L2_CID_VFLIP,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "vertical flip",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 0
},
.set = vv6410_set_vflip,
.get = vv6410_get_vflip
},
#define GAIN_IDX 2
{
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "analog gain",
.minimum = 0,
.maximum = 15,
.step = 1,
.default_value = 10
},
.set = vv6410_set_analog_gain,
.get = vv6410_get_analog_gain
},
#define EXPOSURE_IDX 3
{
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "exposure",
.minimum = 0,
.maximum = 32768,
.step = 1,
.default_value = 20000
},
.set = vv6410_set_exposure,
.get = vv6410_get_exposure
}
};
static int vv6410_probe(struct sd *sd)
{
u16 data;
int err, i;
s32 *sensor_settings;
err = stv06xx_read_sensor(sd, VV6410_DEVICEH, &data);
if (err < 0)
return -ENODEV;
if (data == 0x19) {
info("vv6410 sensor detected");
sensor_settings = kmalloc(ARRAY_SIZE(vv6410_ctrl) * sizeof(s32),
GFP_KERNEL);
if (!sensor_settings)
return -ENOMEM;
sd->gspca_dev.cam.cam_mode = vv6410_mode;
sd->gspca_dev.cam.nmodes = ARRAY_SIZE(vv6410_mode);
sd->desc.ctrls = vv6410_ctrl;
sd->desc.nctrls = ARRAY_SIZE(vv6410_ctrl);
for (i = 0; i < sd->desc.nctrls; i++)
sensor_settings[i] = vv6410_ctrl[i].qctrl.default_value;
sd->sensor_priv = sensor_settings;
return 0;
}
return -ENODEV;
}
static int vv6410_init(struct sd *sd)
{
int err = 0, i;
s32 *sensor_settings = sd->sensor_priv;
for (i = 0; i < ARRAY_SIZE(stv_bridge_init); i++) {
/* if NULL then len contains single value */
if (stv_bridge_init[i].data == NULL) {
err = stv06xx_write_bridge(sd,
stv_bridge_init[i].start,
stv_bridge_init[i].len);
} else {
int j;
for (j = 0; j < stv_bridge_init[i].len; j++)
err = stv06xx_write_bridge(sd,
stv_bridge_init[i].start + j,
stv_bridge_init[i].data[j]);
}
}
if (err < 0)
return err;
err = stv06xx_write_sensor_bytes(sd, (u8 *) vv6410_sensor_init,
ARRAY_SIZE(vv6410_sensor_init));
if (err < 0)
return err;
err = vv6410_set_exposure(&sd->gspca_dev,
sensor_settings[EXPOSURE_IDX]);
if (err < 0)
return err;
err = vv6410_set_analog_gain(&sd->gspca_dev,
sensor_settings[GAIN_IDX]);
return (err < 0) ? err : 0;
}
static void vv6410_disconnect(struct sd *sd)
{
sd->sensor = NULL;
kfree(sd->sensor_priv);
}
static int vv6410_start(struct sd *sd)
{
int err;
struct cam *cam = &sd->gspca_dev.cam;
u32 priv = cam->cam_mode[sd->gspca_dev.curr_mode].priv;
if (priv & VV6410_CROP_TO_QVGA) {
PDEBUG(D_CONF, "Cropping to QVGA");
stv06xx_write_sensor(sd, VV6410_XENDH, 320 - 1);
stv06xx_write_sensor(sd, VV6410_YENDH, 240 - 1);
} else {
stv06xx_write_sensor(sd, VV6410_XENDH, 360 - 1);
stv06xx_write_sensor(sd, VV6410_YENDH, 294 - 1);
}
if (priv & VV6410_SUBSAMPLE) {
PDEBUG(D_CONF, "Enabling subsampling");
stv06xx_write_bridge(sd, STV_Y_CTRL, 0x02);
stv06xx_write_bridge(sd, STV_X_CTRL, 0x06);
stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x10);
} else {
stv06xx_write_bridge(sd, STV_Y_CTRL, 0x01);
stv06xx_write_bridge(sd, STV_X_CTRL, 0x0a);
stv06xx_write_bridge(sd, STV_SCAN_RATE, 0x20);
}
/* Turn on LED */
err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_ON);
if (err < 0)
return err;
err = stv06xx_write_sensor(sd, VV6410_SETUP0, 0);
if (err < 0)
return err;
PDEBUG(D_STREAM, "Starting stream");
return 0;
}
static int vv6410_stop(struct sd *sd)
{
int err;
/* Turn off LED */
err = stv06xx_write_bridge(sd, STV_LED_CTRL, LED_OFF);
if (err < 0)
return err;
err = stv06xx_write_sensor(sd, VV6410_SETUP0, VV6410_LOW_POWER_MODE);
if (err < 0)
return err;
PDEBUG(D_STREAM, "Halting stream");
return (err < 0) ? err : 0;
}
static int vv6410_dump(struct sd *sd)
{
u8 i;
int err = 0;
info("Dumping all vv6410 sensor registers");
for (i = 0; i < 0xff && !err; i++) {
u16 data;
err = stv06xx_read_sensor(sd, i, &data);
info("Register 0x%x contained 0x%x", i, data);
}
return (err < 0) ? err : 0;
}
static int vv6410_get_hflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[HFLIP_IDX];
PDEBUG(D_V4L2, "Read horizontal flip %d", *val);
return 0;
}
static int vv6410_set_hflip(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u16 i2c_data;
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
sensor_settings[HFLIP_IDX] = val;
err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
if (err < 0)
return err;
if (val)
i2c_data |= VV6410_HFLIP;
else
i2c_data &= ~VV6410_HFLIP;
PDEBUG(D_V4L2, "Set horizontal flip to %d", val);
err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
return (err < 0) ? err : 0;
}
static int vv6410_get_vflip(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[VFLIP_IDX];
PDEBUG(D_V4L2, "Read vertical flip %d", *val);
return 0;
}
static int vv6410_set_vflip(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
u16 i2c_data;
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
sensor_settings[VFLIP_IDX] = val;
err = stv06xx_read_sensor(sd, VV6410_DATAFORMAT, &i2c_data);
if (err < 0)
return err;
if (val)
i2c_data |= VV6410_VFLIP;
else
i2c_data &= ~VV6410_VFLIP;
PDEBUG(D_V4L2, "Set vertical flip to %d", val);
err = stv06xx_write_sensor(sd, VV6410_DATAFORMAT, i2c_data);
return (err < 0) ? err : 0;
}
static int vv6410_get_analog_gain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[GAIN_IDX];
PDEBUG(D_V4L2, "Read analog gain %d", *val);
return 0;
}
static int vv6410_set_analog_gain(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
sensor_settings[GAIN_IDX] = val;
PDEBUG(D_V4L2, "Set analog gain to %d", val);
err = stv06xx_write_sensor(sd, VV6410_ANALOGGAIN, 0xf0 | (val & 0xf));
return (err < 0) ? err : 0;
}
static int vv6410_get_exposure(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
*val = sensor_settings[EXPOSURE_IDX];
PDEBUG(D_V4L2, "Read exposure %d", *val);
return 0;
}
static int vv6410_set_exposure(struct gspca_dev *gspca_dev, __s32 val)
{
int err;
struct sd *sd = (struct sd *) gspca_dev;
s32 *sensor_settings = sd->sensor_priv;
unsigned int fine, coarse;
sensor_settings[EXPOSURE_IDX] = val;
val = (val * val >> 14) + val / 4;
fine = val % VV6410_CIF_LINELENGTH;
coarse = min(512, val / VV6410_CIF_LINELENGTH);
PDEBUG(D_V4L2, "Set coarse exposure to %d, fine expsure to %d",
coarse, fine);
err = stv06xx_write_sensor(sd, VV6410_FINEH, fine >> 8);
if (err < 0)
goto out;
err = stv06xx_write_sensor(sd, VV6410_FINEL, fine & 0xff);
if (err < 0)
goto out;
err = stv06xx_write_sensor(sd, VV6410_COARSEH, coarse >> 8);
if (err < 0)
goto out;
err = stv06xx_write_sensor(sd, VV6410_COARSEL, coarse & 0xff);
out:
return err;
}
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