From 5196d7c63197b03b29985e8bd9bfa4425b253673 Mon Sep 17 00:00:00 2001 From: Erik Andr?n Date: Sun, 4 Jan 2009 07:28:42 -0300 Subject: [PATCH] V4L/DVB (11426): gspca - m5602: Don't touch hflip/vflip register on Read/Modify/Write Touching the hflip/vflip register while doing the read/modify/write corrupts the image. Just read from the sensor ctrl cache instead and all is good. Signed-off-by: Erik Andr?n Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/gspca/m5602/m5602_ov9650.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/media/video/gspca/m5602/m5602_ov9650.c b/drivers/media/video/gspca/m5602/m5602_ov9650.c index 9c79a51..7967a65 100644 --- a/drivers/media/video/gspca/m5602/m5602_ov9650.c +++ b/drivers/media/video/gspca/m5602/m5602_ov9650.c @@ -662,12 +662,7 @@ int ov9650_set_hflip(struct gspca_dev *gspca_dev, __s32 val) PDEBUG(D_V4L2, "Set horizontal flip to %d", val); sensor_settings[HFLIP_IDX] = val; - err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1); - if (err < 0) - return err; - - i2c_data = ((i2c_data & 0xdf) | ((val & 0x01) << 5)); - + i2c_data = ((val & 0x01) << 5) | (sensor_settings[VFLIP_IDX] << 4); err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); return err; @@ -692,19 +687,14 @@ int ov9650_set_vflip(struct gspca_dev *gspca_dev, __s32 val) s32 *sensor_settings = sd->sensor_priv; PDEBUG(D_V4L2, "Set vertical flip to %d", val); - sensor_settings[VFLIP_IDX] = val; - err = m5602_read_sensor(sd, OV9650_MVFP, &i2c_data, 1); - if (err < 0) - return err; - - i2c_data = ((i2c_data & 0xef) | ((val & 0x01) << 4)); + i2c_data = ((val & 0x01) << 4) | (sensor_settings[VFLIP_IDX] << 5); err = m5602_write_sensor(sd, OV9650_MVFP, &i2c_data, 1); - if (err < 0) return err; + /* When vflip is toggled we need to readjust the bridge hsync/vsync */ if (gspca_dev->streaming) err = ov9650_start(sd); -- 2.7.4