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V4L/DVB: gspca - ov534: Add Powerline Frequency control

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Note that setting this options to 50Hz can reduce the framerate, so it is
still disabled (60Hz) by default.

Signed-off-by: Mosalam Ebrahimi <m.ebrahimi@ieee.org>
Signed-off-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mosalam Ebrahimi 2010-03-08 13:52:17 -03:00 committed by Mauro Carvalho Chehab
parent 7f9e9e8dc2
commit 4b7875407b
1 changed files with 70 additions and 1 deletions
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71
drivers/media/video/gspca/ov534.c
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@ -66,7 +66,7 @@ struct sd {
s8 sharpness;
u8 hflip;
u8 vflip;
u8 freqfltr;
};
/* V4L2 controls supported by the driver */
@ -90,6 +90,10 @@ static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getcontrast(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu);
static const struct ctrl sd_ctrls[] = {
{ /* 0 */
@ -233,6 +237,20 @@ static const struct ctrl sd_ctrls[] = {
.set = sd_setvflip,
.get = sd_getvflip,
},
{ /* 10 */
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
.type = V4L2_CTRL_TYPE_MENU,
.name = "Light Frequency Filter",
.minimum = 0,
.maximum = 1,
.step = 1,
#define FREQFLTR_DEF 0
.default_value = FREQFLTR_DEF,
},
.set = sd_setfreqfltr,
.get = sd_getfreqfltr,
},
};
static const struct v4l2_pix_format ov772x_mode[] = {
@ -784,6 +802,17 @@ static void setvflip(struct gspca_dev *gspca_dev)
sccb_reg_read(gspca_dev, 0x0c) & ~0x80);
}
static void setfreqfltr(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->freqfltr == 0)
sccb_reg_write(gspca_dev, 0x2b, 0x00);
else
sccb_reg_write(gspca_dev, 0x2b, 0x9e);
}
/* this function is called at probe time */
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
@ -817,6 +846,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
sd->sharpness = SHARPNESS_DEF;
sd->hflip = HFLIP_DEF;
sd->vflip = VFLIP_DEF;
sd->freqfltr = FREQFLTR_DEF;
return 0;
}
@ -886,6 +916,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
setsharpness(gspca_dev);
setvflip(gspca_dev);
sethflip(gspca_dev);
setfreqfltr(gspca_dev);
ov534_set_led(gspca_dev, 1);
ov534_reg_write(gspca_dev, 0xe0, 0x00);
@ -1179,6 +1210,43 @@ static int sd_getvflip(struct gspca_dev *gspca_dev, __s32 *val)
return 0;
}
static int sd_setfreqfltr(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
sd->freqfltr = val;
if (gspca_dev->streaming)
setfreqfltr(gspca_dev);
return 0;
}
static int sd_getfreqfltr(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
*val = sd->freqfltr;
return 0;
}
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu)
{
switch (menu->id) {
case V4L2_CID_POWER_LINE_FREQUENCY:
switch (menu->index) {
case 0: /* V4L2_CID_POWER_LINE_FREQUENCY_DISABLED */
strcpy((char *) menu->name, "Disabled");
return 0;
case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
strcpy((char *) menu->name, "50 Hz");
return 0;
}
break;
}
return -EINVAL;
}
/* get stream parameters (framerate) */
static int sd_get_streamparm(struct gspca_dev *gspca_dev,
struct v4l2_streamparm *parm)
@ -1230,6 +1298,7 @@ static const struct sd_desc sd_desc = {
.start = sd_start,
.stopN = sd_stopN,
.pkt_scan = sd_pkt_scan,
.querymenu = sd_querymenu,
.get_streamparm = sd_get_streamparm,
.set_streamparm = sd_set_streamparm,
};