atmel_lcdfb: FIFO underflow management

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Manage atmel_lcdfb FIFO underflow

Resetting the LCD and DMA allows to fix screen shifting after a FIFO
underflow.  It follows reset sequence from errata "LCD Screen Shifting
After a Reset".

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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Nicolas Ferre 2008-07-23 21:31:20 -07:00 • committed by Linus Torvalds

parent 77a6e7abb0

commit d22579b837

2 changed files with 57 additions and 1 deletions

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drivers/video/atmel_lcdfb.c

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