From e10f73194d63321d020433fa1287e619d4107b79 Mon Sep 17 00:00:00 2001 From: German Galkin Date: Sun, 7 Mar 2010 06:19:02 -0300 Subject: [PATCH] V4L/DVB: gspca - sn9c20x: Fix exposure control for HV7131R sensor MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Make the range of exposure values (0-0x1770) distribute evenly through HV7131R's exposure control bytes. Signed-off-by: German Galkin Signed-off-by: Jean-François Moine Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/sn9c20x.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/gspca/sn9c20x.c b/drivers/media/video/gspca/sn9c20x.c index 3dee3e5..04bf80d 100644 --- a/drivers/media/video/gspca/sn9c20x.c +++ b/drivers/media/video/gspca/sn9c20x.c @@ -1655,9 +1655,9 @@ static int set_exposure(struct gspca_dev *gspca_dev) case SENSOR_HV7131R: exp[0] |= (4 << 4); exp[2] = 0x25; - exp[3] = ((sd->exposure * 0xffffff) / 0xffff) >> 16; - exp[4] = ((sd->exposure * 0xffffff) / 0xffff) >> 8; - exp[5] = ((sd->exposure * 0xffffff) / 0xffff) & 0xff; + exp[3] = (sd->exposure >> 5) & 0xff; + exp[4] = (sd->exposure << 3) & 0xff; + exp[5] = 0; break; default: return 0; -- 2.7.4