The read mode register bits 8 and 9 are set and marked as reserved.
Don't clear them.
Signed-off-by: Philipp Zabel <p.za...@pengutronix.de>
---
drivers/media/i2c/mt9v032.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 33a110a..052e754 100644
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -415,6 +415,7 @@ static int mt9v032_s_stream(struct v4l2_subdev *subdev, int
enable)
struct i2c_client *client = v4l2_get_subdevdata(subdev);
struct mt9v032 *mt9v032 = to_mt9v032(subdev);
struct v4l2_rect *crop = &mt9v032->crop;
+ unsigned int read_mode;
unsigned int hbin;
unsigned int vbin;
int ret;
@@ -425,9 +426,11 @@ static int mt9v032_s_stream(struct v4l2_subdev *subdev,
int enable)
/* Configure the window size and row/column bin */
hbin = fls(mt9v032->hratio) - 1;
vbin = fls(mt9v032->vratio) - 1;
- ret = mt9v032_write(client, MT9V032_READ_MODE,
- hbin << MT9V032_READ_MODE_COLUMN_BIN_SHIFT |
- vbin << MT9V032_READ_MODE_ROW_BIN_SHIFT);
+ read_mode = mt9v032_read(client, MT9V032_READ_MODE);
+ read_mode &= ~0xff; /* bits 0x300 are reserved */
+ read_mode |= hbin << MT9V032_READ_MODE_COLUMN_BIN_SHIFT |
+ vbin << MT9V032_READ_MODE_ROW_BIN_SHIFT;
+ ret = mt9v032_write(client, MT9V032_READ_MODE, read_mode);
if (ret < 0)
return ret;
--
2.0.0.rc2
--
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