V4L/DVB (8364): gspca: Support of powerline frequency 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>
diff --git a/drivers/media/video/gspca/sonixb.c b/drivers/media/video/gspca/sonixb.c
index a512772..51435e3 100644
--- a/drivers/media/video/gspca/sonixb.c
+++ b/drivers/media/video/gspca/sonixb.c
@@ -44,6 +44,7 @@
unsigned char brightness;
unsigned char autogain;
unsigned char autogain_ignore_frames;
+ unsigned char freq; /* light freq filter setting */
unsigned char fr_h_sz; /* size of frame header */
char sensor; /* Type of image sensor chip */
@@ -85,6 +86,8 @@
static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
static struct ctrl sd_ctrls[] = {
{
@@ -147,6 +150,20 @@
.set = sd_setautogain,
.get = sd_getautogain,
},
+ {
+ {
+ .id = V4L2_CID_POWER_LINE_FREQUENCY,
+ .type = V4L2_CTRL_TYPE_MENU,
+ .name = "Light frequency filter",
+ .minimum = 0,
+ .maximum = 2, /* 0: 0, 1: 50Hz, 2:60Hz */
+ .step = 1,
+#define FREQ_DEF 1
+ .default_value = FREQ_DEF,
+ },
+ .set = sd_setfreq,
+ .get = sd_getfreq,
+ },
};
static struct v4l2_pix_format vga_mode[] = {
@@ -225,11 +242,6 @@
/* Some more unknown stuff */
{0xa0, 0x60, 0x68, 0x04, 0x68, 0xd8, 0xa4, 0x10},
{0xd0, 0x60, 0x17, 0x24, 0xd6, 0x04, 0x94, 0x10}, /* Clipreg */
- {0xa0, 0x60, 0x10, 0x57, 0x99, 0x04, 0x94, 0x16},
- /* Framerate adjust register for artificial light 50 hz flicker
- compensation, identical to ov6630 0x2b register, see 6630 datasheet.
- 0x4f -> (30 fps -> 25 fps), 0x00 -> no adjustment */
- {0xa0, 0x60, 0x2b, 0x4f, 0x99, 0x04, 0x94, 0x15},
};
static const __u8 initOv7630[] = {
@@ -657,8 +669,12 @@
*/
__u8 i2c[] = {0xb0, 0x60, 0x10, 0x00, 0xc0, 0x00, 0x00, 0x10};
int reg10, reg11;
- /* No clear idea why, but setting reg10 above this value
- results in no change */
+ /* ov6645 datasheet says reg10_max is 9a, but that uses
+ tline * 2 * reg10 as formula for calculating texpo, the
+ ov6650 probably uses the same formula as the 7730 which uses
+ tline * 4 * reg10, which explains why the reg10max we've
+ found experimentally for the ov6650 is exactly half that of
+ the ov6645. */
const int reg10_max = 0x4d;
reg11 = (60 * sd->exposure + 999) / 1000;
@@ -713,6 +729,34 @@
}
}
+static void setfreq(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ switch (sd->sensor) {
+ case SENSOR_OV6650: {
+ /* Framerate adjust register for artificial light 50 hz flicker
+ compensation, identical to ov6630 0x2b register, see ov6630
+ datasheet.
+ 0x4f -> (30 fps -> 25 fps), 0x00 -> no adjustment */
+ __u8 i2c[] = {0xa0, 0x60, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10};
+ switch (sd->freq) {
+ default:
+/* case 0: * no filter*/
+/* case 2: * 60 hz */
+ i2c[3] = 0;
+ break;
+ case 1: /* 50 hz */
+ i2c[3] = 0x4f;
+ break;
+ }
+ if (i2c_w(gspca_dev, i2c) < 0)
+ PDEBUG(D_ERR, "i2c error setfreq");
+ break;
+ }
+ }
+}
+
static void do_autogain(struct gspca_dev *gspca_dev)
{
@@ -746,6 +790,7 @@
sd->fr_h_sz = 12; /* default size of the frame header */
sd->sd_desc.nctrls = 2; /* default nb of ctrls */
sd->autogain = AUTOGAIN_DEF; /* default is autogain active */
+ sd->freq = FREQ_DEF;
product = id->idProduct;
/* switch (id->idVendor) { */
@@ -1004,6 +1049,7 @@
setgain(gspca_dev);
setbrightness(gspca_dev);
setexposure(gspca_dev);
+ setfreq(gspca_dev);
sd->autogain_ignore_frames = 0;
atomic_set(&sd->avg_lum, -1);
@@ -1161,6 +1207,45 @@
return 0;
}
+static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->freq = val;
+ if (gspca_dev->streaming)
+ setfreq(gspca_dev);
+ return 0;
+}
+
+static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->freq;
+ 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, "NoFliker");
+ return 0;
+ case 1: /* V4L2_CID_POWER_LINE_FREQUENCY_50HZ */
+ strcpy((char *) menu->name, "50 Hz");
+ return 0;
+ case 2: /* V4L2_CID_POWER_LINE_FREQUENCY_60HZ */
+ strcpy((char *) menu->name, "60 Hz");
+ return 0;
+ }
+ break;
+ }
+ return -EINVAL;
+}
+
/* sub-driver description */
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
@@ -1173,6 +1258,7 @@
.stop0 = sd_stop0,
.close = sd_close,
.pkt_scan = sd_pkt_scan,
+ .querymenu = sd_querymenu,
};
/* -- module initialisation -- */