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author | Manjunath Goudar <manjunath.goudar@linaro.org> | 2013-04-02 18:23:59 +0200 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-08 09:33:40 -0700 |
commit | a76dd463c58efa5dfd72c3dd41f5a76b196f7ab1 (patch) | |
tree | b73a75fe1cfceeea319a128fe0f24b5d18f461b0 /drivers | |
parent | 58f8b6c4fa5a13cb2ddb400e26e9e65766d71e38 (diff) | |
download | linux-rt-a76dd463c58efa5dfd72c3dd41f5a76b196f7ab1.tar.gz |
USB: EHCI: make ehci-orion a separate driver
Separate the Orion host controller driver from ehci-hcd host
code into its own driver module because of following reason.
With the multiplatform changes in arm-soc tree, it becomes
possible to enable the mvebu platform (which uses
ehci-orion) at the same time as other platforms that require
a conflicting EHCI bus glue. At the moment, this results
in a warning like
drivers/usb/host/ehci-hcd.c:1297:0: warning: "PLATFORM_DRIVER" redefined [enabled by default]
drivers/usb/host/ehci-hcd.c:1277:0: note: this is the location of the previous definition
drivers/usb/host/ehci-orion.c:334:31: warning: 'ehci_orion_driver' defined but not used [-Wunused-variable]
and an ehci driver that only works on one of them.
With the infrastructure added by Alan Stern in patch 3e0232039
"USB: EHCI: prepare to make ehci-hcd a library module", we can
avoid this problem by turning a bus glue into a separate
module, as we do here for the orion bus glue.
An earlier version of this patch was included in 3.9 but caused
a regression there, which has subsequently been fixed.
While we are here, use the opportunity to disabiguate the two
Marvell EHCI controller implementations in Kconfig.
In V4 (arnd):
- Improve Kconfig text
In V3:
- More detail provided in commit message regarding this patch.
- Replaced hcd_name string "ehci-orion" into "orion-ehci".
- MODULE_LICENSE is GPL v2.
- In ehci_init_driver calling second argument passed as NULL instead of
ehci_orion_overrides because ehci_orion_overrides is removed.
In V2:
- Tegra patch related changes removed from this patch.
Signed-off-by: Manjunath Goudar <manjunath.goudar@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/usb/host/Kconfig | 17 | ||||
-rw-r--r-- | drivers/usb/host/Makefile | 1 | ||||
-rw-r--r-- | drivers/usb/host/ehci-hcd.c | 6 | ||||
-rw-r--r-- | drivers/usb/host/ehci-orion.c | 82 |
4 files changed, 53 insertions, 53 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index f7af0984743b..c49a0b5da1f4 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -163,6 +163,17 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. +config USB_EHCI_HCD_ORION + tristate "Support for Marvell EBU on-chip EHCI USB controller" + depends on USB_EHCI_HCD && PLAT_ORION + default y + ---help--- + Enables support for the on-chip EHCI controller on Marvell's + embedded ARM SoCs, including Orion, Kirkwood, Dove, Armada XP, + Armada 370. This is different from the EHCI implementation + on Marvell's mobile PXA and MMP SoC, see "EHCI support for + Marvell PXA/MMP USB controller" for those. + config USB_EHCI_MSM bool "Support for MSM on-chip EHCI USB controller" depends on USB_EHCI_HCD && ARCH_MSM @@ -207,13 +218,17 @@ config USB_EHCI_S5P Enable support for the S5P SOC's on-chip EHCI controller. config USB_EHCI_MV - bool "EHCI support for Marvell on-chip controller" + bool "EHCI support for Marvell PXA/MMP USB controller" depends on USB_EHCI_HCD && (ARCH_PXA || ARCH_MMP) select USB_EHCI_ROOT_HUB_TT ---help--- Enables support for Marvell (including PXA and MMP series) on-chip USB SPH and OTG controller. SPH is a single port host, and it can only be EHCI host. OTG is controller that can switch to host mode. + Note that this driver will not work on Marvell's other EHCI + controller used by the EBU-type SoCs including Orion, Kirkwood, + Dova, Armada 370 and Armada XP. See "Support for Marvell EBU + on-chip EHCI USB controller" for those. config USB_W90X900_EHCI bool "W90X900(W90P910) EHCI support" diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 56de4106c8b3..9492f50ea2f8 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o obj-$(CONFIG_USB_EHCI_HCD_OMAP) += ehci-omap.o +obj-$(CONFIG_USB_EHCI_HCD_ORION) += ehci-orion.o obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index b12b97d2ccaf..1f97268bb5d6 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1249,11 +1249,6 @@ MODULE_LICENSE ("GPL"); #define XILINX_OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver #endif -#ifdef CONFIG_PLAT_ORION -#include "ehci-orion.c" -#define PLATFORM_DRIVER ehci_orion_driver -#endif - #ifdef CONFIG_USB_W90X900_EHCI #include "ehci-w90x900.c" #define PLATFORM_DRIVER ehci_hcd_w90x900_driver @@ -1319,6 +1314,7 @@ MODULE_LICENSE ("GPL"); !IS_ENABLED(CONFIG_USB_CHIPIDEA_HOST) && \ !IS_ENABLED(CONFIG_USB_EHCI_MXC) && \ !IS_ENABLED(CONFIG_USB_EHCI_HCD_OMAP) && \ + !IS_ENABLED(CONFIG_USB_EHCI_HCD_ORION) && \ !defined(PLATFORM_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && \ !defined(OF_PLATFORM_DRIVER) && \ diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index 38c45fb3357e..54c579485150 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -17,6 +17,12 @@ #include <linux/of.h> #include <linux/of_device.h> #include <linux/of_irq.h> +#include <linux/usb.h> +#include <linux/usb/hcd.h> +#include <linux/io.h> +#include <linux/dma-mapping.h> + +#include "ehci.h" #define rdl(off) __raw_readl(hcd->regs + (off)) #define wrl(off, val) __raw_writel((val), hcd->regs + (off)) @@ -34,6 +40,12 @@ #define USB_PHY_IVREF_CTRL 0x440 #define USB_PHY_TST_GRP_CTRL 0x450 +#define DRIVER_DESC "EHCI orion driver" + +static const char hcd_name[] = "ehci-orion"; + +static struct hc_driver __read_mostly ehci_orion_hc_driver; + /* * Implement Orion USB controller specification guidelines */ @@ -104,51 +116,6 @@ static void orion_usb_phy_v1_setup(struct usb_hcd *hcd) wrl(USB_MODE, 0x13); } -static const struct hc_driver ehci_orion_hc_driver = { - .description = hcd_name, - .product_desc = "Marvell Orion EHCI", - .hcd_priv_size = sizeof(struct ehci_hcd), - - /* - * generic hardware linkage - */ - .irq = ehci_irq, - .flags = HCD_MEMORY | HCD_USB2, - - /* - * 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, - .bus_suspend = ehci_bus_suspend, - .bus_resume = ehci_bus_resume, - .relinquish_port = ehci_relinquish_port, - .port_handed_over = ehci_port_handed_over, - - .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, -}; - static void ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, const struct mbus_dram_target_info *dram) @@ -323,8 +290,6 @@ static int ehci_orion_drv_remove(struct platform_device *pdev) return 0; } -MODULE_ALIAS("platform:orion-ehci"); - static const struct of_device_id ehci_orion_dt_ids[] = { { .compatible = "marvell,orion-ehci", }, {}, @@ -341,3 +306,26 @@ static struct platform_driver ehci_orion_driver = { .of_match_table = of_match_ptr(ehci_orion_dt_ids), }, }; + +static int __init ehci_orion_init(void) +{ + if (usb_disabled()) + return -ENODEV; + + pr_info("%s: " DRIVER_DESC "\n", hcd_name); + + ehci_init_driver(&ehci_orion_hc_driver, NULL); + return platform_driver_register(&ehci_orion_driver); +} +module_init(ehci_orion_init); + +static void __exit ehci_orion_cleanup(void) +{ + platform_driver_unregister(&ehci_orion_driver); +} +module_exit(ehci_orion_cleanup); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_ALIAS("platform:orion-ehci"); +MODULE_AUTHOR("Tzachi Perelstein"); +MODULE_LICENSE("GPL v2"); |