From 4b7875407b2fb56433586877ca0a564b8d999f4e Mon Sep 17 00:00:00 2001 From: Mosalam Ebrahimi Date: Mon, 8 Mar 2010 13:52:17 -0300 Subject: [PATCH] V4L/DVB: gspca - ov534: Add Powerline Frequency control MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Note that setting this options to 50Hz can reduce the framerate, so it is still disabled (60Hz) by default. Signed-off-by: Mosalam Ebrahimi Signed-off-by: Antonio Ospite Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/ov534.c | 71 ++++++++++++++++++++++++++++++- 1 file changed, 70 insertions(+), 1 deletion(-) diff --git a/drivers/media/video/gspca/ov534.c b/drivers/media/video/gspca/ov534.c index 87838444248..29af17e173d 100644 --- a/drivers/media/video/gspca/ov534.c +++ b/drivers/media/video/gspca/ov534.c @@ -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, }; -- 2.46.0