x86/platform: New Intel Atom SOC power management controller driver

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The Power Management Controller (PMC) controls many of the power
management features present in the Atom SoC. This driver provides
a native power off function via PMC PCI IO port.

On some ACPI hardware-reduced platforms(e.g. ASUS-T100), ACPI sleep
registers are not valid so that (*pm_power_off)() is not hooked by
acpi_power_off(). The power off function in this driver is installed
only when pm_power_off is NULL.

Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Link: http://lkml.kernel.org/r/53B0FEEA.3010805@linux.intel.com
Signed-off-by: Lejun Zhu <lejun.zhu@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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Li, Aubrey 2014-06-30 14:08:42 +08:00 • committed by H. Peter Anvin

parent 832fcc899a

commit 93e5eadd1f

4 changed files with 140 additions and 0 deletions

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4

arch/x86/Kconfig

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31

arch/x86/include/asm/pmc_atom.h

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1

arch/x86/kernel/Makefile

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104

arch/x86/kernel/pmc_atom.c

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