From 10bb7530108cc11fedd0d615467a54f341079778 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Thu, 4 Feb 2010 06:10:55 -0300 Subject: [PATCH] V4L/DVB: gscpa_sonixb: limit ov7630 max framerate at 640x480 In 640x480, if the reg11 has less than 4, the image is unstable (the bridge goes into a higher compression mode which we have not reverse engineered yet). Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sonixb.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/media/video/gspca/sonixb.c b/drivers/media/video/gspca/sonixb.c index 66fffa345e7..fda14200a05 100644 --- a/drivers/media/video/gspca/sonixb.c +++ b/drivers/media/video/gspca/sonixb.c @@ -809,10 +809,11 @@ static void setexposure(struct gspca_dev *gspca_dev) else if (reg11 > 16) reg11 = 16; - /* In 640x480, if the reg11 has less than 3, the image is - unstable (not enough bandwidth). */ - if (gspca_dev->width == 640 && reg11 < 3) - reg11 = 3; + /* In 640x480, if the reg11 has less than 4, the image is + unstable (the bridge goes into a higher compression mode + which we have not reverse engineered yet). */ + if (gspca_dev->width == 640 && reg11 < 4) + reg11 = 4; /* frame exposure time in ms = 1000 * reg11 / 30 -> reg10 = (sd->exposure / 2) * reg10_max / (1000 * reg11 / 30) */ -- 2.20.1