[PATCH v1 1/1] riscv: sbi: Introduce system suspend support

[Samuel Holland]

On 2023-10-12 2:21 AM, Andrew Jones wrote:
> When the SUSP SBI extension is present it implies that the standard
> "suspend to RAM" type is available. Wire it up to the generic
> platform suspend support, also applying the already present support
> for non-retentive CPU suspend. When the kernel is built with
> CONFIG_SUSPEND, one can do 'echo mem > /sys/power/state' to suspend.
> Resumption will occur when a platform-specific wake-up event arrives.
> 
> Signed-off-by: Andrew Jones <ajones at ventanamicro.com>
> ---
>  arch/riscv/Kconfig           |  5 ++++-
>  arch/riscv/include/asm/sbi.h |  9 ++++++++
>  arch/riscv/kernel/suspend.c  | 43 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 56 insertions(+), 1 deletion(-)

Tested-by: Samuel Holland <samuel.holland at sifive.com>