This patch (as1625) splits the PCI portion of ehci-hcd out into its
own separate driver module, called ehci-pci. Consistently with the
current practice, the decision whether to build this module is not
user-configurable. If EHCI and PCI are enabled then the module will
be built, always.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
CC: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/host/Kconfig | 5 ++
drivers/usb/host/Makefile | 2
drivers/usb/host/ehci-hcd.c | 26 ++---------
drivers/usb/host/ehci-pci.c | 101 ++++++++++++++++++++------------------------
4 files changed, 60 insertions(+), 74 deletions(-)
Index: usb-3.7/drivers/usb/host/Kconfig
===================================================================
--- usb-3.7.orig/drivers/usb/host/Kconfig
+++ usb-3.7/drivers/usb/host/Kconfig
@@ -95,6 +95,11 @@ config USB_EHCI_TT_NEWSCHED
If unsure, say Y.
+config USB_EHCI_PCI
+ tristate
+ depends on USB_EHCI_HCD && PCI
+ default y
+
config USB_EHCI_HCD_PMC_MSP
tristate "EHCI support for on-chip PMC MSP71xx USB controller"
depends on USB_EHCI_HCD && MSP_HAS_USB
Index: usb-3.7/drivers/usb/host/Makefile
===================================================================
--- usb-3.7.orig/drivers/usb/host/Makefile
+++ usb-3.7/drivers/usb/host/Makefile
@@ -24,6 +24,8 @@ obj-$(CONFIG_USB_WHCI_HCD) += whci/
obj-$(CONFIG_PCI) += pci-quirks.o
obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
+obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o
+
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
Index: usb-3.7/drivers/usb/host/ehci-hcd.c
===================================================================
--- usb-3.7.orig/drivers/usb/host/ehci-hcd.c
+++ usb-3.7/drivers/usb/host/ehci-hcd.c
@@ -1252,11 +1252,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR (DRIVER_AUTHOR);
MODULE_LICENSE ("GPL");
-#ifdef CONFIG_PCI
-#include "ehci-pci.c"
-#define PCI_DRIVER ehci_pci_driver
-#endif
-
#ifdef CONFIG_USB_EHCI_FSL
#include "ehci-fsl.c"
#define PLATFORM_DRIVER ehci_fsl_driver
@@ -1367,9 +1362,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_platform_driver
#endif
-#if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \
- !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \
- !defined(XILINX_OF_PLATFORM_DRIVER)
+#if !IS_ENABLED(CONFIG_USB_EHCI_PCI) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(PS3_SYSTEM_BUS_DRIVER) && \
+ !defined(OF_PLATFORM_DRIVER) && \
+ !defined(XILINX_OF_PLATFORM_DRIVER)
#error "missing bus glue for ehci-hcd"
#endif
@@ -1406,12 +1403,6 @@ static int __init ehci_hcd_init(void)
goto clean0;
#endif
-#ifdef PCI_DRIVER
- retval = pci_register_driver(&PCI_DRIVER);
- if (retval < 0)
- goto clean1;
-#endif
-
#ifdef PS3_SYSTEM_BUS_DRIVER
retval = ps3_ehci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
if (retval < 0)
@@ -1443,10 +1434,6 @@ clean3:
ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
clean2:
#endif
-#ifdef PCI_DRIVER
- pci_unregister_driver(&PCI_DRIVER);
-clean1:
-#endif
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
clean0:
@@ -1472,9 +1459,6 @@ static void __exit ehci_hcd_cleanup(void
#ifdef PLATFORM_DRIVER
platform_driver_unregister(&PLATFORM_DRIVER);
#endif
-#ifdef PCI_DRIVER
- pci_unregister_driver(&PCI_DRIVER);
-#endif
#ifdef PS3_SYSTEM_BUS_DRIVER
ps3_ehci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
#endif
Index: usb-3.7/drivers/usb/host/ehci-pci.c
===================================================================
--- usb-3.7.orig/drivers/usb/host/ehci-pci.c
+++ usb-3.7/drivers/usb/host/ehci-pci.c
@@ -18,9 +18,18 @@
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-#ifndef CONFIG_PCI
-#error "This file is PCI bus glue. CONFIG_PCI must be defined."
-#endif
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+
+#include "ehci.h"
+#include "pci-quirks.h"
+
+#define DRIVER_DESC "EHCI PCI platform driver"
+
+static const char hcd_name[] = "ehci-pci";
/* defined here to avoid adding to pci_ids.h for single instance use */
#define PCI_DEVICE_ID_INTEL_CE4100_USB 0x2e70
@@ -315,11 +324,6 @@ done:
* Also they depend on separate root hub suspend/resume.
*/
-static int ehci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
-{
- return ehci_suspend(hcd, do_wakeup);
-}
-
static bool usb_is_intel_switchable_ehci(struct pci_dev *pdev)
{
return pdev->class == PCI_CLASS_SERIAL_USB_EHCI &&
@@ -370,55 +374,18 @@ static int ehci_pci_resume(struct usb_hc
(void) ehci_pci_reinit(ehci, pdev);
return 0;
}
-#endif
-static const struct hc_driver ehci_pci_hc_driver = {
- .description = hcd_name,
- .product_desc = "EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_pci_setup,
- .start = ehci_run,
-#ifdef CONFIG_PM
- .pci_suspend = ehci_pci_suspend,
- .pci_resume = ehci_pci_resume,
-#endif
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- /*
- * managing i/o requests and associated device resources
- */
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
+#else
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
+#define ehci_suspend NULL
+#define ehci_pci_resume NULL
+#endif /* CONFIG_PM */
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
+static struct hc_driver __read_mostly ehci_pci_hc_driver;
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+static const struct ehci_driver_overrides overrides = {
+ .product_desc = "EHCI PCI host controller",
+ .reset = ehci_pci_setup,
};
/*-------------------------------------------------------------------------*/
@@ -451,3 +418,31 @@ static struct pci_driver ehci_pci_driver
},
#endif
};
+
+static int __init ehci_pci_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_pci_hc_driver, &overrides);
+
+ /* Entries for the PCI suspend/resume callbacks are special */
+ ehci_pci_hc_driver.pci_suspend = ehci_suspend;
+ ehci_pci_hc_driver.pci_resume = ehci_pci_resume;
+
+ return pci_register_driver(&ehci_pci_driver);
+}
+module_init(ehci_pci_init);
+
+static void __exit ehci_pci_cleanup(void)
+{
+ pci_unregister_driver(&ehci_pci_driver);
+}
+module_exit(ehci_pci_cleanup);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("David Brownell");
+MODULE_AUTHOR("Alan Stern");
+MODULE_LICENSE("GPL");
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
