56 lines
1.4 KiB
Diff
56 lines
1.4 KiB
Diff
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From ab83ef10f0b3f4878e9655b166f778487bb6c795 Mon Sep 17 00:00:00 2001
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From: Ondrej Jirman <megous@megous.com>
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Date: Sat, 2 Nov 2019 15:21:04 +0100
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Subject: [PATCH 040/351] ARM: sunxi: Use SCPI to send suspend message to SCP
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on A83T
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We use undefined value of 3, to mean SUSPEND_SYSTEM. SCP should:
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- kill CPU0
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- kill cluster 0
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- shutdown power to both clusters (Linux MCPM doesn't do that)
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...
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- reverse all of the above on interrupt
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Signed-off-by: Ondrej Jirman <megous@megous.com>
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---
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arch/arm/mach-sunxi/sunxi.c | 15 +++++++++++++--
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1 file changed, 13 insertions(+), 2 deletions(-)
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diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
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index fd6432faa103..244341ffe8f3 100644
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--- a/arch/arm/mach-sunxi/sunxi.c
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+++ b/arch/arm/mach-sunxi/sunxi.c
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@@ -16,6 +16,7 @@
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#include <linux/platform_device.h>
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#include <linux/of_platform.h>
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#include <linux/reset/sunxi.h>
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+#include <linux/scpi_protocol.h>
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#include <linux/suspend.h>
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#include <asm/mach/arch.h>
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@@ -99,8 +100,18 @@ static int sun8i_a83t_pm_valid(suspend_state_t state)
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static int sun8i_a83t_suspend_finish(unsigned long val)
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{
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- // don't do much
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- cpu_do_idle();
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+ struct scpi_ops *scpi;
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+
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+ scpi = get_scpi_ops();
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+ if (scpi && scpi->sys_set_power_state) {
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+ //HACK: use invalid state to mean: suspend last CPU and the system
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+ scpi->sys_set_power_state(3);
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+ cpu_do_idle();
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+ } else {
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+ // don't do much if scpi is not available
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+ cpu_do_idle();
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+ }
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+
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return 0;
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}
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--
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2.34.0
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