diff options
author | Volker Braun <vbraun@physics.upenn.edu> | 2006-07-30 03:04:18 -0700 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-31 13:28:45 -0700 |
commit | 994aad251acab32a5d40d4a9501dc3e736562b6d (patch) | |
tree | 4c816fa097d07b2c4a4f46d26023af94f9a26822 /include/asm-powerpc | |
parent | 256154fbc31c25a8df4d398232acfa9d4892224c (diff) |
[PATCH] radeonfb sleep fixes
Many IBM Thinkpad T4* models and some R* and X* with radeon video cards draw
too much power when suspended to RAM, reducing drastically the battery
lifetime. The solution is to enable suspend-to-D2 on these machines. They
are whitelisted through their subsystem vendor/device ID. This fixes
http://bugzilla.kernel.org/show_bug.cgi?id=3022
The patch introduces a framework to alter the pm_mode and reinit_func fields
of the radeonfb_info structure based on a whitelist. This should facilitate
future hardware-dependent workarounds. The workaround for the Samsung P35
that is already in the radeonfb code has been rewritten using this framework.
The behavior can be overridden with module options:
i) video=radeonfb:force_sleep=1
enable suspend-to-D2 also on non-whitelisted machines (useful for
testing new notebook models),
ii) video=radeonfb:ignore_devlist=1
Disable checking the whitelist and do not apply any workarounds.
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc')
0 files changed, 0 insertions, 0 deletions