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path: root/drivers/usb/host/ehci-hub.c
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Diffstat (limited to 'drivers/usb/host/ehci-hub.c')
-rw-r--r--drivers/usb/host/ehci-hub.c78
1 files changed, 2 insertions, 76 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index ea6184bf48d0..bf2c8f65e1ae 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -471,29 +471,6 @@ static int ehci_bus_resume (struct usb_hcd *hcd)
471 471
472/*-------------------------------------------------------------------------*/ 472/*-------------------------------------------------------------------------*/
473 473
474/* Display the ports dedicated to the companion controller */
475static ssize_t show_companion(struct device *dev,
476 struct device_attribute *attr,
477 char *buf)
478{
479 struct ehci_hcd *ehci;
480 int nports, index, n;
481 int count = PAGE_SIZE;
482 char *ptr = buf;
483
484 ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
485 nports = HCS_N_PORTS(ehci->hcs_params);
486
487 for (index = 0; index < nports; ++index) {
488 if (test_bit(index, &ehci->companion_ports)) {
489 n = scnprintf(ptr, count, "%d\n", index + 1);
490 ptr += n;
491 count -= n;
492 }
493 }
494 return ptr - buf;
495}
496
497/* 474/*
498 * Sets the owner of a port 475 * Sets the owner of a port
499 */ 476 */
@@ -528,58 +505,6 @@ static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner)
528 } 505 }
529} 506}
530 507
531/*
532 * Dedicate or undedicate a port to the companion controller.
533 * Syntax is "[-]portnum", where a leading '-' sign means
534 * return control of the port to the EHCI controller.
535 */
536static ssize_t store_companion(struct device *dev,
537 struct device_attribute *attr,
538 const char *buf, size_t count)
539{
540 struct ehci_hcd *ehci;
541 int portnum, new_owner;
542
543 ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
544 new_owner = PORT_OWNER; /* Owned by companion */
545 if (sscanf(buf, "%d", &portnum) != 1)
546 return -EINVAL;
547 if (portnum < 0) {
548 portnum = - portnum;
549 new_owner = 0; /* Owned by EHCI */
550 }
551 if (portnum <= 0 || portnum > HCS_N_PORTS(ehci->hcs_params))
552 return -ENOENT;
553 portnum--;
554 if (new_owner)
555 set_bit(portnum, &ehci->companion_ports);
556 else
557 clear_bit(portnum, &ehci->companion_ports);
558 set_owner(ehci, portnum, new_owner);
559 return count;
560}
561static DEVICE_ATTR(companion, 0644, show_companion, store_companion);
562
563static inline int create_companion_file(struct ehci_hcd *ehci)
564{
565 int i = 0;
566
567 /* with integrated TT there is no companion! */
568 if (!ehci_is_TDI(ehci))
569 i = device_create_file(ehci_to_hcd(ehci)->self.controller,
570 &dev_attr_companion);
571 return i;
572}
573
574static inline void remove_companion_file(struct ehci_hcd *ehci)
575{
576 /* with integrated TT there is no companion! */
577 if (!ehci_is_TDI(ehci))
578 device_remove_file(ehci_to_hcd(ehci)->self.controller,
579 &dev_attr_companion);
580}
581
582
583/*-------------------------------------------------------------------------*/ 508/*-------------------------------------------------------------------------*/
584 509
585static int check_reset_complete ( 510static int check_reset_complete (
@@ -891,10 +816,11 @@ static int ehci_hub_control (
891 * power switching; they're allowed to just limit the 816 * power switching; they're allowed to just limit the
892 * current. khubd will turn the power back on. 817 * current. khubd will turn the power back on.
893 */ 818 */
894 if (HCS_PPC (ehci->hcs_params)){ 819 if ((temp & PORT_OC) && HCS_PPC(ehci->hcs_params)) {
895 ehci_writel(ehci, 820 ehci_writel(ehci,
896 temp & ~(PORT_RWC_BITS | PORT_POWER), 821 temp & ~(PORT_RWC_BITS | PORT_POWER),
897 status_reg); 822 status_reg);
823 temp = ehci_readl(ehci, status_reg);
898 } 824 }
899 } 825 }
900 826