diff options
| author | Mathias Nyman <mathias.nyman@linux.intel.com> | 2024-02-17 03:09:27 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-17 18:24:37 +0300 |
| commit | 4f022aad80dc8b175e309197720f4fca8004fb2e (patch) | |
| tree | 087b4abac7870341756be6965f06b2f1c95a7490 /drivers/usb/host/xhci.h | |
| parent | 88bae831f3810e02c9c951233c7ee662aa13dc2c (diff) | |
| download | linux-4f022aad80dc8b175e309197720f4fca8004fb2e.tar.xz | |
xhci: Add interrupt pending autoclear flag to each interrupter
Each interrupter has an interrupt pending (IP) bit that should be cleared
in the interrupt handler. This is done automatically for systems using
MSI/MSI-X interrupts.
Secondary interrupters used by audio offload may not actually trigger
MSI/MSI-X messages, so driver may need to clear the IP bit manually for
these, even if the primary interrupter IP is cleared automatically.
Add an ip_autoclear flag to each interrupter that driver can configure
when requesting an interrupt for that xHC interrupter, and move
the interrupt pending clearing code to its own helper function.
Use this ip_autoclear flag instead of the current hcd->msi_enabled
to check if IP flag is cleared by software.
[Moved ip_autoclear into xhci and set based on msi_enabled -wcheng]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20240217001017.29969-2-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 32d27134cc48..36c3ba64da51 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1432,6 +1432,7 @@ struct xhci_interrupter { struct xhci_erst erst; struct xhci_intr_reg __iomem *ir_set; unsigned int intr_num; + bool ip_autoclear; /* For interrupter registers save and restore over suspend/resume */ u32 s3_irq_pending; u32 s3_irq_control; |