diff options
| author | Zhang Lixu <lixu.zhang@intel.com> | 2020-12-16 14:36:40 +0800 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2021-01-06 17:20:02 +0100 |
| commit | 2f4ec1548b4e816b25c1486df30b1a2920c62cbc (patch) | |
| tree | 461cba7a01b94f663da8744c286e6ed924bac657 /drivers/hid/intel-ish-hid/ipc/hw-ish.h | |
| parent | 2e23a70edabe933284f690dff49497fb6b82b0e5 (diff) | |
HID: intel-ish-hid: ipc: Address EHL Sx resume issues
When OOB is disabled, FW will be power gated when system is in S3/S4/S5
which is the same behavior with legacy ISH FW.
When OOB is enabled, FW will always power on which is totally different
comparing to legacy ISH FW.
So NO_D3 flag is not enough to check FW's status after resume.
Here we can use IPC FW status register to check host link status.
If it is false, it means FW get reset after power gated, need go through
the whole initialization flow; If it is true, it means FW is alive, just
set host ready bit to let fw know host is up.
Co-developed-by: Wei Jiang <wei.w.jiang@intel.com>
Signed-off-by: Wei Jiang <wei.w.jiang@intel.com>
Signed-off-by: Even Xu <even.xu@intel.com>
Signed-off-by: Zhang Lixu <lixu.zhang@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/intel-ish-hid/ipc/hw-ish.h')
| -rw-r--r-- | drivers/hid/intel-ish-hid/ipc/hw-ish.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hid/intel-ish-hid/ipc/hw-ish.h b/drivers/hid/intel-ish-hid/ipc/hw-ish.h index 1fb294ca463e..111ad259ba74 100644 --- a/drivers/hid/intel-ish-hid/ipc/hw-ish.h +++ b/drivers/hid/intel-ish-hid/ipc/hw-ish.h @@ -81,5 +81,6 @@ struct ishtp_device *ish_dev_init(struct pci_dev *pdev); int ish_hw_start(struct ishtp_device *dev); void ish_device_disable(struct ishtp_device *dev); int ish_disable_dma(struct ishtp_device *dev); +void ish_set_host_ready(struct ishtp_device *dev); #endif /* _ISHTP_HW_ISH_H_ */ |