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soc: rockchip_system_monitor: Add support to set uevent suppress for cpu

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Android healthd try to listen power_supply subsystem uevent,
but which will block system from suspend on big.LITTLE system
because thermal_cooling_device_unregister will called when
cpufreq_exit. So ignore this uevent when suspend.

Signed-off-by: Finley Xiao <finley.xiao@rock-chips.com>
Change-Id: I2ce98efce1bcaa06cfc87f305b6730f67eb1eb3c
This commit is contained in:
Finley Xiao
2022-02-22 19:16:22 +08:00
committed by Tao Huang
parent b8cdbf0c87
commit 6580996b5b
1 changed files with 22 additions and 0 deletions
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22
drivers/soc/rockchip/rockchip_system_monitor.c
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@@ -1513,6 +1513,26 @@ static int rockchip_system_status_notifier(struct notifier_block *nb,
return NOTIFY_OK;
}
static int rockchip_system_monitor_set_cpu_uevent_suppress(bool is_suppress)
{
struct monitor_dev_info *info;
struct cpufreq_policy *policy;
list_for_each_entry(info, &monitor_dev_list, node) {
if (info->devp->type != MONITOR_TPYE_CPU)
continue;
policy = (struct cpufreq_policy *)info->devp->data;
if (!policy || !policy->cdev)
continue;
if (is_suppress)
dev_set_uevent_suppress(&policy->cdev->device, 1);
else
dev_set_uevent_suppress(&policy->cdev->device, 0);
}
return 0;
}
static int monitor_pm_notify(struct notifier_block *nb,
unsigned long mode, void *_unused)
{
@@ -1521,6 +1541,7 @@ static int monitor_pm_notify(struct notifier_block *nb,
case PM_RESTORE_PREPARE:
case PM_SUSPEND_PREPARE:
atomic_set(&monitor_in_suspend, 1);
rockchip_system_monitor_set_cpu_uevent_suppress(true);
break;
case PM_POST_HIBERNATION:
case PM_POST_RESTORE:
@@ -1528,6 +1549,7 @@ static int monitor_pm_notify(struct notifier_block *nb,
if (system_monitor->tz)
rockchip_system_monitor_thermal_update();
atomic_set(&monitor_in_suspend, 0);
rockchip_system_monitor_set_cpu_uevent_suppress(false);
break;
default:
break;