Make Freescale EHCI driver an independent entity from ehci-hcd.c.
This involves
- using module_init/module_exit functions
- using overrides structure
- some necessary code cleanup
Signed-off-by: Ramneek Mehresh <ramneek.mehresh@xxxxxxxxxxxxx>
---
Changes for v2:
- merged previous two separate patches into one
- modified DRIVER_DESC to be more descriptive
- remove "driver" parameter explanation from
fsl_ehci_drv_probe()
- updated year in copyright
drivers/usb/host/Kconfig | 2 +-
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-fsl.c | 168 +++++++++++++++++++-------------------------
drivers/usb/host/ehci-hcd.c | 5 --
4 files changed, 74 insertions(+), 102 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 197a6a3..547cee8 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -137,7 +137,7 @@ config XPS_USB_HCD_XILINX
devices only.
config USB_EHCI_FSL
- bool "Support for Freescale PPC on-chip EHCI USB controller"
+ tristate "Support for Freescale PPC on-chip EHCI USB controller"
depends on FSL_SOC
select USB_EHCI_ROOT_HUB_TT
select USB_FSL_MPH_DR_OF if OF
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 972a74a..754efaa 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -72,6 +72,7 @@ obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o
+obj-$(CONFIG_USB_EHCI_FSL) += ehci-fsl.o
obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index ab4eee3..5352e74 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -1,6 +1,6 @@
/*
* Copyright 2005-2009 MontaVista Software, Inc.
- * Copyright 2008,2012 Freescale Semiconductor, Inc.
+ * Copyright 2008,2012,2015 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -24,29 +24,38 @@
*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/err.h>
+#include <linux/usb.h>
+#include <linux/usb/ehci_def.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
+#include "ehci.h"
#include "ehci-fsl.h"
+#define DRIVER_DESC "Freescale EHCI Host controller driver"
+#define DRV_NAME "ehci-fsl"
+
+static struct hc_driver __read_mostly fsl_ehci_hc_driver;
+
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
-/**
- * usb_hcd_fsl_probe - initialize FSL-based HCDs
- * @drvier: Driver to be used for this HCD
+/*
+ * fsl_ehci_drv_probe - initialize FSL-based HCDs
* @pdev: USB Host Controller being probed
* Context: !in_interrupt()
*
* Allocates basic resources for this USB host controller.
*
*/
-static int usb_hcd_fsl_probe(const struct hc_driver *driver,
- struct platform_device *pdev)
+static int fsl_ehci_drv_probe(struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata;
struct usb_hcd *hcd;
@@ -86,7 +95,8 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
}
irq = res->start;
- hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev,
+ dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto err1;
@@ -159,38 +169,6 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
return retval;
}
-/* may be called without controller electrically present */
-/* may be called with controller, bus, and devices active */
-
-/**
- * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
- *
- * Reverses the effect of usb_hcd_fsl_probe().
- *
- */
-static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
- struct platform_device *pdev)
-{
- struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
- if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
- otg_set_host(hcd->usb_phy->otg, NULL);
- usb_put_phy(hcd->usb_phy);
- }
-
- usb_remove_hcd(hcd);
-
- /*
- * do platform specific un-initialization:
- * release iomux pins, disable clock, etc.
- */
- if (pdata->exit)
- pdata->exit(pdev);
- usb_put_hcd(hcd);
-}
-
static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
enum fsl_usb2_phy_modes phy_mode,
unsigned int port_offset)
@@ -636,79 +614,77 @@ static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
#define ehci_start_port_reset NULL
#endif /* CONFIG_USB_OTG */
+static struct ehci_driver_overrides ehci_fsl_overrides __initdata = {
+ .extra_priv_size = sizeof(struct ehci_fsl),
+ .reset = ehci_fsl_setup,
+};
-static const struct hc_driver ehci_fsl_hc_driver = {
- .description = hcd_name,
- .product_desc = "Freescale On-Chip EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_fsl),
+/**
+ * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_fsl_probe().
+ *
+ */
- /*
- * generic hardware linkage
- */
- .irq = ehci_irq,
- .flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
+static int fsl_ehci_drv_remove(struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
- /*
- * basic lifecycle operations
- */
- .reset = ehci_fsl_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
+ if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
+ otg_set_host(hcd->usb_phy->otg, NULL);
+ usb_put_phy(hcd->usb_phy);
+ }
- /*
- * 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,
+ usb_remove_hcd(hcd);
/*
- * scheduling support
+ * do platform specific un-initialization:
+ * release iomux pins, disable clock, etc.
*/
- .get_frame_number = ehci_get_frame,
+ if (pdata->exit)
+ pdata->exit(pdev);
+ usb_put_hcd(hcd);
- /*
- * 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,
- .start_port_reset = ehci_start_port_reset,
- .relinquish_port = ehci_relinquish_port,
- .port_handed_over = ehci_port_handed_over,
-
- .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+ return 0;
+}
+
+static struct platform_driver ehci_fsl_driver = {
+ .probe = fsl_ehci_drv_probe,
+ .remove = fsl_ehci_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+ .driver = {
+ .name = "fsl-ehci",
+ .pm = EHCI_FSL_PM_OPS,
+ },
};
-static int ehci_fsl_drv_probe(struct platform_device *pdev)
+static int __init ehci_fsl_init(void)
{
if (usb_disabled())
return -ENODEV;
- /* FIXME we only want one one probe() not two */
- return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
-}
+ pr_info(DRV_NAME ": " DRIVER_DESC "\n");
-static int ehci_fsl_drv_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides);
- /* FIXME we only want one one remove() not two */
- usb_hcd_fsl_remove(hcd, pdev);
- return 0;
+ fsl_ehci_hc_driver.product_desc =
+ "Freescale On-Chip EHCI Host Controller";
+ fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset;
+
+
+ return platform_driver_register(&ehci_fsl_driver);
}
+module_init(ehci_fsl_init);
-MODULE_ALIAS("platform:fsl-ehci");
+static void __exit ehci_fsl_cleanup(void)
+{
+ platform_driver_unregister(&ehci_fsl_driver);
+}
+module_exit(ehci_fsl_cleanup);
-static struct platform_driver ehci_fsl_driver = {
- .probe = ehci_fsl_drv_probe,
- .remove = ehci_fsl_drv_remove,
- .shutdown = usb_hcd_platform_shutdown,
- .driver = {
- .name = "fsl-ehci",
- .pm = EHCI_FSL_PM_OPS,
- },
-};
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f4d88df..9dd161c 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1250,11 +1250,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_AUTHOR (DRIVER_AUTHOR);
MODULE_LICENSE ("GPL");
-#ifdef CONFIG_USB_EHCI_FSL
-#include "ehci-fsl.c"
-#define PLATFORM_DRIVER ehci_fsl_driver
-#endif
-
#ifdef CONFIG_USB_EHCI_SH
#include "ehci-sh.c"
#define PLATFORM_DRIVER ehci_hcd_sh_driver
--
1.8.3.1
--
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
