[media] gscpa_pac207: Switch to coarse_grained_expo auto gain algorithm
The pac207's exposure control is a clock-divider, so it goes with quite
big steps. So lets use an autogain algorithm optimised for that.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c
index 44ad57a..fa661c6 100644
--- a/drivers/media/video/gspca/pac207.c
+++ b/drivers/media/video/gspca/pac207.c
@@ -46,13 +46,11 @@
#define PAC207_EXPOSURE_MIN 3
#define PAC207_EXPOSURE_MAX 90 /* 1 sec expo time / 1 fps */
#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 */
-#define PAC207_EXPOSURE_KNEE 9 /* fps: 90 / exposure -> 9: 10 fps */
#define PAC207_EXPOSURE_REG 0x02
#define PAC207_GAIN_MIN 0
#define PAC207_GAIN_MAX 31
#define PAC207_GAIN_DEFAULT 7 /* power on default: 9 */
-#define PAC207_GAIN_KNEE 15
#define PAC207_GAIN_REG 0x0e
#define PAC207_AUTOGAIN_DEADZONE 30
@@ -343,9 +341,8 @@
if (sd->autogain_ignore_frames > 0)
sd->autogain_ignore_frames--;
- else if (gspca_expo_autogain(gspca_dev, avg_lum,
- 90, PAC207_AUTOGAIN_DEADZONE,
- PAC207_GAIN_KNEE, PAC207_EXPOSURE_KNEE))
+ else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
+ 90, PAC207_AUTOGAIN_DEADZONE))
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}