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V4L/DVB (12623): gspca_mr97310a: Add controls for CIF type 0 sensor cams

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gspca_mr97310a: Add controls for CIF type 0 sensor cams

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede 2009-08-14 17:11:36 -03:00 committed by Mauro Carvalho Chehab
parent 5494378911
commit a2e081b64e
1 changed files with 47 additions and 9 deletions
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56
drivers/media/video/gspca/mr97310a.c
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@ -220,7 +220,8 @@ static int sensor_write_regs(struct gspca_dev *gspca_dev,
static int sensor_write1(struct gspca_dev *gspca_dev, u8 reg, u8 data)
{
u8 buf;
struct sd *sd = (struct sd *) gspca_dev;
u8 buf, confirm_reg;
int rc;
buf = data;
@ -229,7 +230,8 @@ static int sensor_write1(struct gspca_dev *gspca_dev, u8 reg, u8 data)
return rc;
buf = 0x01;
rc = sensor_write_reg(gspca_dev, 0x13, 0x00, &buf, 1);
confirm_reg = sd->sensor_type ? 0x13 : 0x11;
rc = sensor_write_reg(gspca_dev, confirm_reg, 0x00, &buf, 1);
if (rc < 0)
return rc;
@ -400,8 +402,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
sd->sensor_type);
if (sd->sensor_type == 0)
gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX) |
(1 << EXPOSURE_IDX) | (1 << GAIN_IDX);
gspca_dev->ctrl_dis = (1 << BRIGHTNESS_IDX);
} else {
sd->cam_type = CAM_TYPE_VGA;
PDEBUG(D_PROBE, "MR97310A VGA camera detected");
@ -767,10 +768,43 @@ static void setexposure(struct gspca_dev *gspca_dev)
if (gspca_dev->ctrl_dis & (1 << EXPOSURE_IDX))
return;
val = sd->exposure >> 4;
sensor_write1(gspca_dev, 3, val);
val = sd->exposure & 0xf;
sensor_write1(gspca_dev, 4, val);
if (sd->sensor_type) {
val = sd->exposure >> 4;
sensor_write1(gspca_dev, 3, val);
val = sd->exposure & 0xf;
sensor_write1(gspca_dev, 4, val);
} else {
u8 clockdiv;
int exposure;
/* We have both a clock divider and an exposure register.
We first calculate the clock divider, as that determines
the maximum exposure and then we calculayte the exposure
register setting (which goes from 0 - 511).
Note our 0 - 4095 exposure is mapped to 0 - 511
milliseconds exposure time */
clockdiv = (60 * sd->exposure + 7999) / 8000;
/* Limit framerate to not exceed usb bandwidth */
if (clockdiv < 3 && gspca_dev->width >= 320)
clockdiv = 3;
else if (clockdiv < 2)
clockdiv = 2;
/* Frame exposure time in ms = 1000 * clockdiv / 60 ->
exposure = (sd->exposure / 8) * 511 / (1000 * clockdiv / 60) */
exposure = (60 * 511 * sd->exposure) / (8000 * clockdiv);
if (exposure > 511)
exposure = 511;
/* exposure register value is reversed! */
exposure = 511 - exposure;
sensor_write1(gspca_dev, 0x02, clockdiv);
sensor_write1(gspca_dev, 0x0e, exposure & 0xff);
sensor_write1(gspca_dev, 0x0f, exposure >> 8);
}
}
static void setgain(struct gspca_dev *gspca_dev)
@ -780,7 +814,11 @@ static void setgain(struct gspca_dev *gspca_dev)
if (gspca_dev->ctrl_dis & (1 << GAIN_IDX))
return;
sensor_write1(gspca_dev, 3, sd->gain);
if (sd->sensor_type) {
sensor_write1(gspca_dev, 3, sd->gain);
} else {
sensor_write1(gspca_dev, 0x10, sd->gain);
}
}
static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)