[PATCH v13 13/53] usb: host: xhci: Export enable and disable interrupter APIs

Wesley Cheng
2024-02-03T02:37:47Z

Secondary interrupters can be OS owned, so expose the enable and disable
interrupter APIs, so that the interrupts can be configured as requested
depending on the client.

Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
drivers/usb/host/xhci.c | 6 ++++--
drivers/usb/host/xhci.h | 2 ++
2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 872ce8c1a5ba..834d8d160da4 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -320,7 +320,7 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci)
xhci_info(xhci, "Fault detected\n");
}

-static int xhci_enable_interrupter(struct xhci_interrupter *ir)
+int xhci_enable_interrupter(struct xhci_interrupter *ir)
{
u32 iman;

@@ -332,8 +332,9 @@ static int xhci_enable_interrupter(struct xhci_interrupter *ir)

return 0;
}
+EXPORT_SYMBOL_GPL(xhci_enable_interrupter);

-static int xhci_disable_interrupter(struct xhci_interrupter *ir)
+int xhci_disable_interrupter(struct xhci_interrupter *ir)
{
u32 iman;

@@ -345,6 +346,7 @@ static int xhci_disable_interrupter(struct xhci_interrupter *ir)

return 0;
}
+EXPORT_SYMBOL_GPL(xhci_disable_interrupter);

/* interrupt moderation interval imod_interval in nanoseconds */
static int xhci_set_interrupter_moderation(struct xhci_interrupter *ir,
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index eaea676c85d2..7c2481838f79 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1871,6 +1871,8 @@ int xhci_alloc_tt_info(struct xhci_hcd *xhci,
struct xhci_virt_device *virt_dev,
struct usb_device *hdev,
struct usb_tt *tt, gfp_t mem_flags);
+int xhci_enable_interrupter(struct xhci_interrupter *ir);
+int xhci_disable_interrupter(struct xhci_interrupter *ir);

/* xHCI ring, segment, TRB, and TD functions */
dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);