From f181bf60e3f31cdab48bd8b9d913201ed2f9e522 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin Date: Wed, 11 Nov 2009 14:57:05 +0800 Subject: MIPS: Loongson 2F: Add suspend support framework This patch add basic suspend support for loongson2f family machines, loongson2f have a specific feature: when we set it's frequency to ZERO, it will go into a wait mode, and then can be waked up by the external interrupt. so, if we setup suitable interrupts before putting it into wait mode, we will be able wake it up whenever we want via sending the relative interrupts to it. These interrupts are board-specific, Yeeloong2F use the keyboard interrupt and SCI interrupt, but LingLoong and Fuloong2F use the interrupts connected to the processors directly. and BTW: some old LingLoong and FuLoong2F have no such interrupts connected, so, there is no way to wake them up from suspend mode. and therefore, please do not enable the kernel support for them. The board-specific support will be added in the coming patches. Signed-off-by: Wu Zhangjin Cc: linux-mips@linux-mips.org Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: Wu Zhangjin Cc: Len Brown Cc: Rafael J. Wysocki Cc: linux-pm@lists.linux-foundation.org Patchwork: http://patchwork.linux-mips.org/patch/629/ Acked-by: Pavel Machek Signed-off-by: Ralf Baechle --- arch/mips/loongson/Kconfig | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/mips/loongson/Kconfig') diff --git a/arch/mips/loongson/Kconfig b/arch/mips/loongson/Kconfig index a214127895f2..17e72fde908c 100644 --- a/arch/mips/loongson/Kconfig +++ b/arch/mips/loongson/Kconfig @@ -61,3 +61,8 @@ endchoice config CS5536 bool + +config LOONGSON_SUSPEND + bool + default y + depends on CPU_SUPPORTS_CPUFREQ && SUSPEND -- cgit v1.2.3