Exposure is now a u16 value, both MSB and LSB are set, but values in the v4l2
control are limited to the interval [0,506] as 0x01fa (506) is the maximum
observed value with AEC enabled.
Skip setting exposure when AEC is enabled.
Signed-off-by: Antonio Ospite <osp...@studenti.unina.it>
---
linux/drivers/media/video/gspca/ov534.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
Index: gspca/linux/drivers/media/video/gspca/ov534.c
===================================================================
--- gspca.orig/linux/drivers/media/video/gspca/ov534.c
+++ gspca/linux/drivers/media/video/gspca/ov534.c
@@ -59,7 +59,7 @@
u8 brightness;
u8 contrast;
u8 gain;
- u8 exposure;
+ u16 exposure;
u8 agc;
u8 awb;
u8 aec;
@@ -140,7 +140,7 @@
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
.minimum = 0,
- .maximum = 255,
+ .maximum = 506,
.step = 1,
#define EXPO_DEF 120
.default_value = EXPO_DEF,
@@ -684,11 +684,15 @@
static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- u8 val;
+ u16 val;
+
+ if (sd->aec)
+ return;
val = sd->exposure;
- sccb_reg_write(gspca_dev, 0x08, val >> 7);
- sccb_reg_write(gspca_dev, 0x10, val << 1);
+ sccb_reg_write(gspca_dev, 0x08, val >> 8);
+ sccb_reg_write(gspca_dev, 0x10, val & 0xff);
+
}
static void setagc(struct gspca_dev *gspca_dev)
--
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