[PATCH 10/10] USB: EHCI: make ehci-w90X900 a separate driver

manjunath.goudar at linaro.org
2013-02-07T17:34:07Z

From: Manjunath Goudar <manjunath.goudar@linaro.org>

Separate the Nuvoton On-Chip host controller driver from ehci-hcd host code
into its own driver module.

Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Cc: Greg KH <greg@kroah.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Wan ZongShun <mcuos.com@gmail.com>
Cc: linux-usb at vger.kernel.org
Cc: linux-kernel at vger.kernel.org
---
drivers/usb/host/Kconfig | 2 +-
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-hcd.c | 6 +--
drivers/usb/host/ehci-w90x900.c | 90 +++++++++++++++++----------------------
4 files changed, 43 insertions(+), 56 deletions(-)

diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 8d18a6c..1b5e30b 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -245,7 +245,7 @@ config USB_EHCI_MV
only be EHCI host. OTG is controller that can switch to host mode.

config USB_W90X900_EHCI
- bool "W90X900(W90P910) EHCI support"
+ tristate "W90X900(W90P910) EHCI support"
depends on USB_EHCI_HCD && ARCH_W90X900
---help---
Enables support for the W90X900 USB controller
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 6c1d0e0..74db4d4 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o
obj-$(CONFIG_USB_EHCI_MV) += ehci-mv.o
obj-$(CONFIG_USB_EHCI_HCD_VT8500)+= ehci-vt8500.o
obj-$(CONFIG_USB_EHCI_MSM) += ehci-msm.o
+obj-$(CONFIG_USB_W90X900_EHCI) += ehci-w90x900.o
obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index d44115b..84ed7d7 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1267,11 +1267,6 @@ MODULE_LICENSE ("GPL");
#define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver
#endif

-#ifdef CONFIG_USB_W90X900_EHCI
-#include "ehci-w90x900.c"
-#define PLATFORM_DRIVER ehci_hcd_w90x900_driver
-#endif
-
#ifdef CONFIG_USB_OCTEON_EHCI
#include "ehci-octeon.c"
#define PLATFORM_DRIVER ehci_octeon_driver
@@ -1314,6 +1309,7 @@ MODULE_LICENSE ("GPL");
!IS_ENABLED(CONFIG_USB_EHCI_MV) && \
!IS_ENABLED(CONFIG_ARCH_VT8500) && \
!IS_ENABLED(CONFIG_USB_EHCI_MSM) && \
+ !IS_ENABLED(CONFIG_USB_W90X900_EHCI) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(OF_PLATFORM_DRIVER) && \
!defined(XILINX_OF_PLATFORM_DRIVER)
diff --git a/drivers/usb/host/ehci-w90x900.c b/drivers/usb/host/ehci-w90x900.c
index 59e0e24..0b677ec 100644
--- a/drivers/usb/host/ehci-w90x900.c
+++ b/drivers/usb/host/ehci-w90x900.c
@@ -13,11 +13,31 @@

#include <linux/platform_device.h>

+#include <linux/dma-mapping.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/io.h>
+#include "ehci.h"
+
/* enable phy0 and phy1 for w90p910 */
#define ENPHY (0x01<<8)
#define PHY0_CTR (0xA4)
#define PHY1_CTR (0xA8)

+#define DRIVER_DESC "Nuvoton w90x900 On-Chip EHCI Host driver"
+
+static const char hcd_name[] = "ehci-w90x900";
+
+static struct hc_driver __read_mostly ehci_w90x900_hc_driver;
+
+static const struct ehci_driver_overrides ehci_w90X900_overrides __initdata = {
+ .reset = ehci_setup,
+};
+
static int usb_w90x900_probe(const struct hc_driver *driver,
struct platform_device *pdev)
{
@@ -99,54 +119,6 @@ void usb_w90x900_remove(struct usb_hcd *hcd, struct platform_device *pdev)
usb_put_hcd(hcd);
}

-static const struct hc_driver ehci_w90x900_hc_driver = {
- .description = hcd_name,
- .product_desc = "Nuvoton w90x900 EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_USB2|HCD_MEMORY,
-
- /*
- * basic lifecycle operations
- */
- .reset = ehci_setup,
- .start = ehci_run,
-
- .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,
-
- /*
- * scheduling support
- */
- .get_frame_number = ehci_get_frame,
-
- /*
- * root hub support
- */
- .hub_status_data = ehci_hub_status_data,
- .hub_control = ehci_hub_control,
-#ifdef CONFIG_PM
- .bus_suspend = ehci_bus_suspend,
- .bus_resume = ehci_bus_resume,
-#endif
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
-};
-
static int ehci_w90x900_probe(struct platform_device *pdev)
{
if (usb_disabled())
@@ -168,12 +140,30 @@ static struct platform_driver ehci_hcd_w90x900_driver = {
.probe = ehci_w90x900_probe,
.remove = ehci_w90x900_remove,
.driver = {
- .name = "w90x900-ehci",
+ .name = hcd_name,
.owner = THIS_MODULE,
},
};

+static int __init ehci_w90X900_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+
+ ehci_init_driver(&ehci_w90x900_hc_driver, &ehci_w90X900_overrides);
+ return platform_driver_register(&ehci_hcd_w90x900_driver);
+}
+module_init(ehci_w90X900_init);
+
+static void __exit ehci_w90X900_cleanup(void)
+{
+ platform_driver_unregister(&ehci_hcd_w90x900_driver);
+}
+module_exit(ehci_w90X900_cleanup);
+
MODULE_AUTHOR("Wan ZongShun <mcuos.com@gmail.com>");
-MODULE_DESCRIPTION("w90p910 usb ehci driver!");
+MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:w90p910-ehci");
--
1.7.9.5