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i7300_idle driver v1.55

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The Intel 7300 Memory Controller supports dynamic throttling of memory which can
be used to save power when system is idle. This driver does the memory
throttling when all CPUs are idle on such a system.

Refer to "Intel 7300 Memory Controller Hub (MCH)" datasheet
for the config space description.

Signed-off-by: Andy Henroid <andrew.d.henroid@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
This commit is contained in:
Andy Henroid
2008-10-09 11:45:22 -07:00
committed by Len Brown
parent c7d87d79d1
commit 27471fdb32
9 changed files with 706 additions and 0 deletions
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16
drivers/idle/Kconfig Normal file
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menu "Memory power savings"
config I7300_IDLE_IOAT_CHANNEL
bool
config I7300_IDLE
tristate "Intel chipset idle power saving driver"
select I7300_IDLE_IOAT_CHANNEL
depends on X86_64
help
Enable idle power savings with certain Intel server chipsets.
The chipset must have I/O AT support, such as the Intel 7300.
The power savings depends on the type and quantity of DRAM devices.
endmenu