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[media] v4l: mt9v032: Do not unset master_mode
The power_on function of the driver resets the chip and sets the CHIP_CONTROL register to 0. This switches the operating mode to slave. The s_stream function sets the correct mode. But this caused problems on a board where the camera chip is operated as master. The camera started after a random amount of time streaming an image, I observed between 10 and 300 seconds. The STRFM_OUT and STLN_OUT pins are not connected on this board which may cause some issues in slave mode. I could not find any documentation about this. Keeping the chip in master mode after the reset helped to fix this issue for me. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
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@ -348,7 +348,8 @@ static int mt9v032_power_on(struct mt9v032 *mt9v032)
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if (ret < 0)
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return ret;
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return regmap_write(map, MT9V032_CHIP_CONTROL, 0);
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return regmap_write(map, MT9V032_CHIP_CONTROL,
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MT9V032_CHIP_CONTROL_MASTER_MODE);
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}
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static void mt9v032_power_off(struct mt9v032 *mt9v032)
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@ -420,8 +421,7 @@ __mt9v032_get_pad_crop(struct mt9v032 *mt9v032, struct v4l2_subdev_pad_config *c
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static int mt9v032_s_stream(struct v4l2_subdev *subdev, int enable)
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{
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const u16 mode = MT9V032_CHIP_CONTROL_MASTER_MODE
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| MT9V032_CHIP_CONTROL_DOUT_ENABLE
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const u16 mode = MT9V032_CHIP_CONTROL_DOUT_ENABLE
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| MT9V032_CHIP_CONTROL_SEQUENTIAL;
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struct mt9v032 *mt9v032 = to_mt9v032(subdev);
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struct v4l2_rect *crop = &mt9v032->crop;
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