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V4L/DVB (8354): gspca: Better gain for bridge sn9c10x - sensor ov6650.

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sonixb:   Better gain for ov6650.

Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans de Goede 2008-07-14 10:11:42 -03:00 committed by Mauro Carvalho Chehab
parent 4b972d29bb
commit ad5ef80dd7
1 changed files with 13 additions and 17 deletions
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30
drivers/media/video/gspca/sonixb.c
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@ -39,8 +39,8 @@ struct sd {
sensor, so we use a per cam copy */
atomic_t avg_lum;
unsigned short gain;
unsigned short exposure;
unsigned char gain;
unsigned char exposure;
unsigned char brightness;
unsigned char autogain;
unsigned char autogain_ignore_frames;
@ -73,7 +73,7 @@ struct sd {
ignore atleast the 2 next frames for the new settings to come into effect
before doing any other adjustments */
#define AUTOGAIN_IGNORE_FRAMES 3
#define AUTOGAIN_DEADZONE 500
#define AUTOGAIN_DEADZONE 1000
#define DESIRED_AVG_LUM 7000
/* V4L2 controls supported by the driver */
@ -107,10 +107,10 @@ static struct ctrl sd_ctrls[] = {
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
.minimum = 0,
.maximum = 511,
.maximum = 255,
.step = 1,
#define GAIN_DEF 255
#define GAIN_KNEE 400
#define GAIN_DEF 127
#define GAIN_KNEE 200
.default_value = GAIN_DEF,
},
.set = sd_setgain,
@ -122,9 +122,9 @@ static struct ctrl sd_ctrls[] = {
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
#define EXPOSURE_DEF 0
#define EXPOSURE_KNEE 353 /* 10 fps */
#define EXPOSURE_KNEE 176 /* 10 fps */
.minimum = 0,
.maximum = 511,
.maximum = 255,
.step = 1,
.default_value = EXPOSURE_DEF,
.flags = 0,
@ -563,11 +563,6 @@ err:
static void setsensorgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
unsigned short gain;
gain = (sd->gain + 1) >> 1;
if (gain > 255)
gain = 255;
switch (sd->sensor) {
@ -575,14 +570,15 @@ static void setsensorgain(struct gspca_dev *gspca_dev)
__u8 i2c[] =
{0x30, 0x11, 0x02, 0x20, 0x70, 0x00, 0x00, 0x10};
i2c[4] = 255 - gain;
i2c[4] = 255 - sd->gain;
if (i2c_w(gspca_dev, i2c) < 0)
goto err;
break;
}
case SENSOR_OV6650: {
__u8 i2c[] = {0xa0, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10};
i2c[3] = gain;
i2c[3] = sd->gain >> 3;
if (i2c_w(gspca_dev, i2c) < 0)
goto err;
break;
@ -599,7 +595,7 @@ static void setgain(struct gspca_dev *gspca_dev)
__u8 gain;
__u8 rgb_value;
gain = sd->gain >> 5;
gain = sd->gain >> 4;
/* red and blue gain */
rgb_value = gain << 4 | gain;
@ -616,7 +612,7 @@ static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
/* translate 0 - 255 to a number of fps in a 30 - 1 scale */
int fps = 30 - sd->exposure * 29 / 511;
int fps = 30 - sd->exposure * 29 / 255;
switch (sd->sensor) {
case SENSOR_TAS5110: {