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HID: intel-ish-hid: ipc: check the NO_D3 flag to distinguish resume paths 

The NO_D3 flag would be set if the ISH enter D0i3 in ish_suspend(),
The resume paths can be distinguished by checking the NO_D3 flag.
It's more reasonable than checking the FW status.

Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Zhang Lixu 2019-08-08 18:21:13 +08:00 committed by Jiri Kosina
parent 2db8edaa88
commit fc19a57dd4
1 changed files with 15 additions and 19 deletions
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34
drivers/hid/intel-ish-hid/ipc/pci-ish.c
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@ -210,19 +210,11 @@ static void __maybe_unused ish_resume_handler(struct work_struct *work)
{
struct pci_dev *pdev = to_pci_dev(ish_resume_device);
struct ishtp_device *dev = pci_get_drvdata(pdev);
uint32_t fwsts;
int ret;
pdev->dev_flags &= ~PCI_DEV_FLAGS_NO_D3;
/* Get ISH FW status */
fwsts = IPC_GET_ISH_FWSTS(dev->ops->get_fw_status(dev));
/*
* If currently, in ISH FW, sensor app is loaded or beyond that,
* it means ISH isn't powered off, in this case, send a resume message.
*/
if (fwsts >= FWSTS_SENSOR_APP_LOADED) {
/* Check the NO_D3 flag to distinguish the resume paths */
if (pdev->dev_flags & PCI_DEV_FLAGS_NO_D3) {
pdev->dev_flags &= ~PCI_DEV_FLAGS_NO_D3;
disable_irq_wake(pdev->irq);
ishtp_send_resume(dev);
@ -232,16 +224,20 @@ static void __maybe_unused ish_resume_handler(struct work_struct *work)
ret = wait_event_interruptible_timeout(dev->resume_wait,
!dev->resume_flag,
msecs_to_jiffies(WAIT_FOR_RESUME_ACK_MS));
}
/*
* If in ISH FW, sensor app isn't loaded yet, or no resume response.
* That means this platform is not S0ix compatible, or something is
* wrong with ISH FW. So on resume, full reboot of ISH processor will
* happen, so need to go through init sequence again.
*/
if (dev->resume_flag)
/*
* If the flag is not cleared, something is wrong with ISH FW.
* So on resume, need to go through init sequence again.
*/
if (dev->resume_flag)
ish_init(dev);
} else {
/*
* Resume from the D3, full reboot of ISH processor will happen,
* so need to go through init sequence again.
*/
ish_init(dev);
}
}
/**