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| author | Zhang Lixu <lixu.zhang@intel.com> | 2019-08-08 12:21:13 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2019-08-19 14:01:50 +0200 |
| commit | fc19a57dd4834a939b5eef574c61cd4f81af6cf8 (patch) | |
| tree | 822b9b58669c7bfd280d5eb582bfac80fb95ddde /drivers/hid/intel-ish-hid/ipc | |
| parent | HID: intel-ish-hid: ipc: make ish suspend paths clear (diff) | |
| download | linux-fc19a57dd4834a939b5eef574c61cd4f81af6cf8.tar.xz linux-fc19a57dd4834a939b5eef574c61cd4f81af6cf8.zip | |
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>
Diffstat (limited to 'drivers/hid/intel-ish-hid/ipc')
| -rw-r--r-- | drivers/hid/intel-ish-hid/ipc/pci-ish.c | 34 |
1 files changed, 15 insertions, 19 deletions
diff --git a/drivers/hid/intel-ish-hid/ipc/pci-ish.c b/drivers/hid/intel-ish-hid/ipc/pci-ish.c index 35081f2cf781..f269852304e5 100644 --- a/drivers/hid/intel-ish-hid/ipc/pci-ish.c +++ b/drivers/hid/intel-ish-hid/ipc/pci-ish.c @@ -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); + } } /** |