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V4L/DVB (8706): Make contrast and brightness work for pac7302.

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Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Jean-Francois Moine 2008-09-03 16:47:57 -03:00 committed by Mauro Carvalho Chehab
parent 3a1ea70503
commit dff6d321d4
1 changed files with 37 additions and 6 deletions
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43
drivers/media/video/gspca/pac7311.c
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@ -82,9 +82,10 @@ static struct ctrl sd_ctrls[] = {
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contrast",
.minimum = 0,
.maximum = 255,
#define CONTRAST_MAX 255
.maximum = CONTRAST_MAX,
.step = 1,
#define CONTRAST_DEF 127
#define CONTRAST_DEF 60
.default_value = CONTRAST_DEF,
},
.set = sd_setcontrast,
@ -94,7 +95,7 @@ static struct ctrl sd_ctrls[] = {
{
.id = V4L2_CID_SATURATION,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Color",
.name = "Saturation",
.minimum = 0,
.maximum = 255,
.step = 1,
@ -429,13 +430,42 @@ static int sd_config(struct gspca_dev *gspca_dev,
return 0;
}
/* rev 12a only */
static void setbrightcont(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int i, v;
static const __u8 max[10] =
{0x29, 0x33, 0x42, 0x5a, 0x6e, 0x80, 0x9f, 0xbb,
0xd4, 0xec};
static const __u8 delta[10] =
{0x35, 0x33, 0x33, 0x2f, 0x2a, 0x25, 0x1e, 0x17,
0x11, 0x0b};
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 10; i++) {
v = max[i];
v += (sd->brightness - BRIGHTNESS_MAX)
* 150 / BRIGHTNESS_MAX; /* 200 ? */
v -= delta[i] * sd->contrast / CONTRAST_MAX;
if (v < 0)
v = 0;
else if (v > 0xff)
v = 0xff;
reg_w(gspca_dev, 0xa2 + i, v);
}
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setbrightness(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int brightness;
if (sd->sensor == SENSOR_PAC7302)
if (sd->sensor == SENSOR_PAC7302) {
setbrightcont(gspca_dev);
return;
}
/*jfm: inverted?*/
brightness = BRIGHTNESS_MAX - sd->brightness;
reg_w(gspca_dev, 0xff, 0x04);
@ -449,13 +479,14 @@ static void setcontrast(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->sensor == SENSOR_PAC7302)
if (sd->sensor == SENSOR_PAC7302) {
setbrightcont(gspca_dev);
return;
}
reg_w(gspca_dev, 0xff, 0x01);
reg_w(gspca_dev, 0x80, sd->contrast);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
PDEBUG(D_CONF|D_STREAM, "contrast: %i", sd->contrast);
}
static void setcolors(struct gspca_dev *gspca_dev)