[PATCH 0/5] fbdev: Remove use of VESA constants

[Thomas Zimmermann <tzimmermann@suse.de>]

Fbdev and its drivers use FB_BLANK constants for controlling the display
blanking state in the fb_blank callback. Several drivers implement the
callback with VESA constants; thus mixing up semantics.

Update the drivers to use VESA constants instead.

Some background: the VESA constants describe DPMS levels for monitor
singal generation. VESA_NO_BLANKING means that the sync signals are on,
although the display adapter might not transfer meaningful pixel data.
The constants FB_BLANK_NORMAL represents this case in fbdev, while
FB_BLANK_UNBLANK represents enabled sync signal generation plus pixel
data. Fbdev drivers using VESA constants therefore often contain
off-by-one errors.

Thomas Zimmermann (5):
  fbdev/au1100fb: Use FB blanking constants
  fbdev/i810fb: Use FB blanking constants
  fbdev/sa1100fb: Remove comment on VESA DPMS modes
  fbdev/platinumfb: Use FB blanking constants
  fbdev/xilinxfb: Use FB blanking constants

 drivers/video/fbdev/au1100fb.c       | 18 ++++++++---------
 drivers/video/fbdev/i810/i810_main.c |  2 +-
 drivers/video/fbdev/platinumfb.c     |  8 +++++---
 drivers/video/fbdev/sa1100fb.c       | 29 ----------------------------
 drivers/video/fbdev/xilinxfb.c       |  2 +-
 5 files changed, 16 insertions(+), 43 deletions(-)

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2.55.0