linux_dsm_epyc7002/arch/x86/platform
Chen Yu 1373718194 ACPI / PM: Introduce efi poweroff for HW-full platforms without _S5
The problem is Linux registers pm_power_off = efi_power_off only if
we are in hardware reduced mode. Actually, what we also want is to do
this when ACPI S5 is simply not supported on non-legacy platforms.
Since some future Intel platforms are HW-full mode where the DSDT
fails to supply an _S5 object(without SLP_TYP), we should let such
kind of platform to leverage efi runtime service to poweroff.

This patch uses efi power off as first choice when S5 is unavailable,
even if there is a customized poweroff(driver provided, eg).
Meanwhile, the legacy platforms will not be affected because there is
no path for them to overwrite the pm_power_off to efi power off.

Suggested-by: Len Brown <len.brown@intel.com>
Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-09 02:11:43 +02:00
..
atom x86/platform/iosf_mbi: Remove duplicate definitions 2015-12-09 01:18:34 +01:00
ce4100 x86: ce4100, irq: Do not set legacy_pic to null_legacy_pic 2014-06-21 23:05:42 +02:00
efi ACPI / PM: Introduce efi poweroff for HW-full platforms without _S5 2016-04-09 02:11:43 +02:00
geode x86/platform: Make platform/geode/net5501.c explicitly non-modular 2016-02-16 09:11:09 +01:00
goldfish goldfish: platform device for x86 2013-01-21 12:09:19 -08:00
intel x86/platform/iosf_mbi: Add Intel Tangier PCI id 2015-07-16 17:48:48 +02:00
intel-mid Merge branch 'x86/cleanups' into x86/urgent 2016-03-17 09:44:57 +01:00
intel-quark x86/platform/intel/quark: Drop IMR lock bit support 2016-02-23 07:37:23 +01:00
iris x86: platform: iris: drop owner assignment from platform_drivers 2014-10-20 16:20:15 +02:00
olpc x86/olpc/xo15/sci: Use newly added power_supply_put API 2015-03-13 23:15:53 +01:00
scx200 X86: drivers: remove __dev* attributes. 2013-01-03 15:57:04 -08:00
sfi x86: Cleanup irq_domain ops 2015-04-24 15:36:55 +02:00
ts5500 x86/platform/ts5500: Add support for TS-5400 boards 2014-07-16 21:17:42 +02:00
uv x86/platform/uv: Include clocksource.h for clocksource_touch_watchdog() 2015-12-11 09:04:04 +01:00
Makefile x86/platform/iosf_mbi: Move to dedicated folder 2015-07-16 17:48:47 +02:00