V4L/DVB (10075): pxa-camera: setup the FIFO inactivity time-out register
Using PXA270's FIFO inactivity time-out register (CITOR) reduces FIFO overruns. The time-out is calculated in CICLK / LCDCLK ticks and has to be longer than one pixel time. For this we have to know the pixel clock frequency, which usually is provided by the camera. We use the struct soc_camera_sense to request PCLK frequency from the camera driver upon each data format change. Tested-by: NRobert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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