[PATCH v13 15/53] xhci: export XHCI IMOD setting helper for interrupters

Wesley Cheng
2024-02-03T02:37:55Z

Utilize the xhci_set_interrupter_moderation() API to set the IMOD value for
interrupters, so that secondary interrupts can also configure this
parameter when clients request for it.

Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
---
drivers/usb/host/xhci.c | 3 ++-
drivers/usb/host/xhci.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 834d8d160da4..d2ce1e1421e6 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -349,7 +349,7 @@ int xhci_disable_interrupter(struct xhci_interrupter *ir)
EXPORT_SYMBOL_GPL(xhci_disable_interrupter);

/* interrupt moderation interval imod_interval in nanoseconds */
-static int xhci_set_interrupter_moderation(struct xhci_interrupter *ir,
+int xhci_set_interrupter_moderation(struct xhci_interrupter *ir,
u32 imod_interval)
{
u32 imod;
@@ -364,6 +364,7 @@ static int xhci_set_interrupter_moderation(struct xhci_interrupter *ir,

return 0;
}
+EXPORT_SYMBOL_GPL(xhci_set_interrupter_moderation);

static void compliance_mode_recovery(struct timer_list *t)
{
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index ad9d93c645ad..d88d2f67e3ed 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1874,6 +1874,8 @@ int xhci_alloc_tt_info(struct xhci_hcd *xhci,
struct usb_tt *tt, gfp_t mem_flags);
int xhci_enable_interrupter(struct xhci_interrupter *ir);
int xhci_disable_interrupter(struct xhci_interrupter *ir);
+int xhci_set_interrupter_moderation(struct xhci_interrupter *ir,
+ u32 imod_interval);

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