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firmware: imx: make sure MU irq can wake up system from suspend mode 

IRQF_NO_SUSPEND flag is set for MU IRQ of IPC work, but with this
flag set, IRQD_WAKEUP_ARMED flag will NOT be set during
suspend_device_irq() phase, then when MU IRQ arrives, it will NOT
wake up system from suspend.

To fix this issue, pm_system_wakeup() is called in general MU IRQ
handler to make sure system can be waked up when MU IRQ arrives.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
5.4-rM2-2.2.x-imx-squashed
Anson Huang 2019-08-15 13:22:44 +08:00 committed by Dong Aisheng
parent 255d962ee5
commit faa4898632
1 changed files with 3 additions and 1 deletions
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4
drivers/firmware/imx/imx-scu-irq.c
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@ -9,10 +9,11 @@
#include <dt-bindings/firmware/imx/rsrc.h>
#include <linux/firmware/imx/ipc.h>
#include <linux/mailbox_client.h>
#include <linux/suspend.h>
#define IMX_SC_IRQ_FUNC_ENABLE 1
#define IMX_SC_IRQ_FUNC_STATUS 2
#define IMX_SC_IRQ_NUM_GROUP 4
#define IMX_SC_IRQ_NUM_GROUP 7
static u32 mu_resource_id;
@ -90,6 +91,7 @@ static void imx_scu_irq_work_handler(struct work_struct *work)
if (!irq_status)
continue;
pm_system_wakeup();
imx_scu_irq_notifier_call_chain(irq_status, &i);
}
}