mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 11:13:58 +08:00
66ec6d5940
Background operations in the UFS device can be disabled by the host to reduce the response latency of transfer requests. Add support for enabling/disabling the background operations during runtime suspend/resume of the device. If the device is in critical need of BKOPS it will raise an URGENT_BKOPS exception which should be handled by the host to make sure the device performs as expected. During bootup, the BKOPS is enabled in the device by default. The disable of BKOPS is supported only when the driver supports runtime suspend/resume operations as the runtime PM framework provides a way to determine the device idleness and hence BKOPS can be managed effectively. During runtime resume the BKOPS is disabled to reduce latency and during runtime suspend the BKOPS is enabled to allow device to carry out idle time BKOPS. In some cases where the BKOPS is disabled during runtime resume and due to continuous data transfers the runtime suspend is not triggered, the BKOPS is enabled when the device raises a level-2 exception (outstanding operations - performance impact). Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org> Signed-off-by: Santosh Y <santoshsy@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com> |
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| ufs.h | ||
| ufshcd-pci.c | ||
| ufshcd-pltfrm.c | ||
| ufshcd.c | ||
| ufshcd.h | ||
| ufshci.h | ||