xhci: Refactor bus suspend state into a struct.
There are several variables in the xhci_hcd structure that are related to
bus suspend and resume state. There are a couple different port status
arrays that are accessed by port index. Move those variables into a
separate structure, xhci_bus_state. Stash that structure in xhci_hcd.
When we have two roothhubs that can be suspended and resumed separately,
we can have two xhci_bus_states, and index into the port arrays in each
structure with the fake roothub port index (not the real hardware port
index).
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index daa8858..c15470e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1161,6 +1161,22 @@
u64 erst_dequeue;
};
+struct xhci_bus_state {
+ unsigned long bus_suspended;
+ unsigned long next_statechange;
+
+ /* Port suspend arrays are indexed by the portnum of the fake roothub */
+ /* ports suspend status arrays - max 31 ports for USB2, 15 for USB3 */
+ u32 port_c_suspend;
+ u32 suspended_ports;
+ unsigned long resume_done[USB_MAXCHILDREN];
+};
+
+static inline unsigned int hcd_index(struct usb_hcd *hcd)
+{
+ return 0;
+}
+
/* There is one ehci_hci structure per controller */
struct xhci_hcd {
struct usb_hcd *main_hcd;
@@ -1225,9 +1241,6 @@
/* Host controller watchdog timer structures */
unsigned int xhc_state;
- unsigned long bus_suspended;
- unsigned long next_statechange;
-
u32 command;
struct s3_save s3;
/* Host controller is dying - not responding to commands. "I'm not dead yet!"
@@ -1249,11 +1262,10 @@
#define XHCI_LINK_TRB_QUIRK (1 << 0)
#define XHCI_RESET_EP_QUIRK (1 << 1)
#define XHCI_NEC_HOST (1 << 2)
- /* port suspend change*/
- u32 port_c_suspend;
- /* which ports are suspended */
- u32 suspended_ports;
- unsigned long resume_done[USB_MAXCHILDREN];
+ /* There's only one roothub to keep track of bus suspend info for
+ * (right now).
+ */
+ struct xhci_bus_state bus_state[1];
/* Is each xHCI roothub port a USB 3.0, USB 2.0, or USB 1.1 port? */
u8 *port_array;
/* Array of pointers to USB 3.0 PORTSC registers */