On Fri, 25 Apr 2014 21:20:08 +0800, Hanjun Guo hanjun.guo@linaro.org wrote:
The _PDC (Processor Driver Capabilities) object provides OSPM a mechanism to convey to the platform the capabilities supported by OSPM for processor power management.
OSPM evaluates _PDC prior to evaluating any other processor power management objects returning configuration information.
This patch introduces the skeleton of _PDC related file to make ACPI core can be compiled on ARM64, and should be revisited when implementing CPU power control.
Signed-off-by: Al Stone al.stone@linaro.org Signed-off-by: Graeme Gregory graeme.gregory@linaro.org Signed-off-by: Hanjun Guo hanjun.guo@linaro.org
arch/arm64/include/asm/acpi.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/arm64/include/asm/acpi.h
diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h new file mode 100644 index 0000000..e3e990e --- /dev/null +++ b/arch/arm64/include/asm/acpi.h @@ -0,0 +1,37 @@ +/*
- Copyright (C) 2013~2014, Al Stone al.stone@linaro.org
Not really a correct copyright assignement. The copyright is held by Linaro, but the author is Al. It should instead read:
* Copyright (C0 2013-2014, Linaro Ltd. * Author: Al Stone al.stone@linaro.org
Acked-by: Grant Likely grant.likely@linaro.org
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- */
+#ifndef _ASM_ACPI_H +#define _ASM_ACPI_H
+static inline bool arch_has_acpi_pdc(void) +{
- /*
* Always false for now, should be revisited when* implementing CPU power management*/- return false;
+}
+static inline void arch_acpi_set_pdc_bits(u32 *buf) +{
- /* Should be revisited when implementing CPU power management */
- return;
+}
+#endif /*_ASM_ACPI_H*/
1.7.9.5