f181bf60e3
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 <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: yanh@lemote.com Cc: huhb@lemote.com Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: Len Brown <len.brown@intel.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: linux-pm@lists.linux-foundation.org Patchwork: http://patchwork.linux-mips.org/patch/629/ Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
69 lines
1.6 KiB
Plaintext
69 lines
1.6 KiB
Plaintext
choice
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prompt "Machine Type"
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depends on MACH_LOONGSON
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config LEMOTE_FULOONG2E
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bool "Lemote Fuloong(2e) mini-PC"
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select ARCH_SPARSEMEM_ENABLE
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select CEVT_R4K
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select CSRC_R4K
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select SYS_HAS_CPU_LOONGSON2E
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select DMA_NONCOHERENT
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select BOOT_ELF32
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select BOARD_SCACHE
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select HW_HAS_PCI
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select I8259
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select ISA
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select IRQ_CPU
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_64BIT_KERNEL
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select SYS_SUPPORTS_LITTLE_ENDIAN
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select SYS_SUPPORTS_HIGHMEM
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select SYS_HAS_EARLY_PRINTK
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select GENERIC_HARDIRQS_NO__DO_IRQ
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select GENERIC_ISA_DMA_SUPPORT_BROKEN
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select CPU_HAS_WB
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help
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Lemote Fuloong(2e) mini-PC board based on the Chinese Loongson-2E CPU and
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an FPGA northbridge
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Lemote Fuloong(2e) mini PC have a VIA686B south bridge.
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config LEMOTE_MACH2F
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bool "Lemote Loongson 2F family machines"
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select ARCH_SPARSEMEM_ENABLE
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select BOARD_SCACHE
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select BOOT_ELF32
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select CEVT_R4K
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select CPU_HAS_WB
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select CS5536
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select CSRC_R4K
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select DMA_NONCOHERENT
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select GENERIC_HARDIRQS_NO__DO_IRQ
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select GENERIC_ISA_DMA_SUPPORT_BROKEN
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select HW_HAS_PCI
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select I8259
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select IRQ_CPU
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select ISA
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select SYS_HAS_CPU_LOONGSON2F
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select SYS_HAS_EARLY_PRINTK
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select SYS_SUPPORTS_32BIT_KERNEL
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select SYS_SUPPORTS_64BIT_KERNEL
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select SYS_SUPPORTS_HIGHMEM
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select SYS_SUPPORTS_LITTLE_ENDIAN
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help
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Lemote Loongson 2F family machines utilize the 2F revision of
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Loongson processor and the AMD CS5536 south bridge.
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These family machines include fuloong2f mini PC, yeeloong2f notebook,
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LingLoong allinone PC and so forth.
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endchoice
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config CS5536
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bool
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config LOONGSON_SUSPEND
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bool
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default y
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depends on CPU_SUPPORTS_CPUFREQ && SUSPEND
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