diff mbox series

[1/2] firmware/psci: Set pm_set_resume/suspend_via_firmware() for SYSTEM_SUSPEND

Message ID 20231227-topic-psci_fw_sus-v1-1-6910add70bf3@linaro.org
State New
Headers
Series Advertise pm_resume/suspend_via_firmware with PSCI |

Commit Message

Konrad Dybcio Dec. 27, 2023, 10:15 p.m. UTC 
  Some device drivers are curious to know whether "the firmware" (which is
often assumed to be ACPI) takes care of suspending or resuming the
platform. Set the flag that reports this behavior if SYSTEM_SUSPEND is
implemented.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
---
 drivers/firmware/psci/psci.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Sudeep Holla Dec. 28, 2023, 10:25 a.m. UTC | #1 
On Wed, Dec 27, 2023 at 11:15:30PM +0100, Konrad Dybcio wrote:
> Some device drivers are curious to know whether "the firmware" (which is
> often assumed to be ACPI) takes care of suspending or resuming the
> platform. Set the flag that reports this behavior if SYSTEM_SUSPEND is
> implemented.
>

Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
diff mbox series

Patch

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index d9629ff87861..1bcb752977b1 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -505,12 +505,22 @@  static int psci_system_suspend(unsigned long unused)
 
 static int psci_system_suspend_enter(suspend_state_t state)
 {
+	pm_set_resume_via_firmware();
+
 	return cpu_suspend(0, psci_system_suspend);
 }
 
+static int psci_system_suspend_begin(suspend_state_t state)
+{
+	pm_set_suspend_via_firmware();
+
+	return 0;
+}
+
 static const struct platform_suspend_ops psci_suspend_ops = {
 	.valid          = suspend_valid_only_mem,
 	.enter          = psci_system_suspend_enter,
+	.begin          = psci_system_suspend_begin,
 };
 
 static void __init psci_init_system_reset2(void)