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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2018-01-16 20:53:14 +1100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-01-17 15:08:56 +0100
commit26c502701c5287cd826b8a62358187f4b8941363 (patch)
treeaa22bf62aa4918c1651b34cc7148b04ee439147b /drivers/usb/host/uhci-hcd.h
parentcbeef22fd611c4f47c494b821b2b105b8af970bb (diff)
downloadlinux-26c502701c5287cd826b8a62358187f4b8941363.tar.bz2
usb: uhci: Add clk support to uhci-platform
The Aspeed SoCs use uhci-platform. With the new dynamic clock control framework, the corresponding IP block clock must be properly enabled. This is a simplified variant of what ehci-platform does, it looks for *one* clock attached to the device, and if it's there, enables it. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/uhci-hcd.h')
-rw-r--r--drivers/usb/host/uhci-hcd.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index f1cc47292a59..7f9f33c8c232 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -4,6 +4,7 @@
#include <linux/list.h>
#include <linux/usb.h>
+#include <linux/clk.h>
#define usb_packetid(pipe) (usb_pipein(pipe) ? USB_PID_IN : USB_PID_OUT)
#define PIPE_DEVEP_MASK 0x0007ff00
@@ -447,6 +448,8 @@ struct uhci_hcd {
int total_load; /* Sum of array values */
short load[MAX_PHASE]; /* Periodic allocations */
+ struct clk *clk; /* (optional) clock source */
+
/* Reset host controller */
void (*reset_hc) (struct uhci_hcd *uhci);
int (*check_and_reset_hc) (struct uhci_hcd *uhci);