[PATCH 3/8] USB: EHCI: make ehci-s5p a separate driver
manjunath.goudar at linaro.org
manjunath.goudar at linaro.org
Sun Feb 10 13:58:12 EST 2013
From: Manjunath Goudar <manjunath.goudar at linaro.org>
Separate the s5p host controller driver from ehci-hcd host code
into its own driver module.
Signed-off-by: Manjunath Goudar <manjunath.goudar at linaro.org>
Cc: Greg KH <greg at kroah.com>
Cc: Alan Stern <stern at rowland.harvard.edu>
Cc: Kukjin Kim <kgene.kim at samsung.com>
Cc: Kyungmin Park <kyungmin.park at samsung.com>
Cc: Grant Likely <grant.likely at secretlab.ca>
Cc: Rob Herring <rob.herring at calxeda.com>
Cc: linux-usb 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-s5p.c | 69 ++++++++++++++++++++++++-------------------
4 files changed, 41 insertions(+), 37 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 1ef37d7..8ffbafa 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -215,7 +215,7 @@ config USB_EHCI_SH
If you use the PCI EHCI controller, this option is not necessary.
config USB_EHCI_S5P
- boolean "S5P EHCI support"
+ tristate "S5P EHCI support"
depends on USB_EHCI_HCD && PLAT_S5P
help
Enable support for the S5P SOC's on-chip EHCI controller.
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index b301243..77e0331 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_USB_EHCI_MXC) += ehci-mxc.o
obj-$(CONFIG_USB_EHCI_HCD_SPEAR)+= ehci-spear.o
obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
+obj-$(CONFIG_USB_EHCI_S5P) += ehci-s5p.o
obj-$(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 08e9fdf..22c50fb 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1307,11 +1307,6 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER ehci_hcd_msp_driver
#endif
-#ifdef CONFIG_USB_EHCI_TEGRA
-#include "ehci-tegra.c"
-#define PLATFORM_DRIVER tegra_ehci_driver
-#endif
-
#ifdef CONFIG_USB_EHCI_S5P
#include "ehci-s5p.c"
#define PLATFORM_DRIVER s5p_ehci_driver
@@ -1339,6 +1334,7 @@ MODULE_LICENSE ("GPL");
!defined(PLATFORM_DRIVER) && \
!IS_ENABLED(CONFIG_PLAT_SPEAR) && \
!IS_ENABLED(CONFIG_ARCH_AT91) && \
+ !IS_ENABLED(CONFIG_USB_EHCI_S5P) && \
!defined(PS3_SYSTEM_BUS_DRIVER) && \
!defined(OF_PLATFORM_DRIVER) && \
!defined(XILINX_OF_PLATFORM_DRIVER)
diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 20ebf6a..6ddf526 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -20,6 +20,17 @@
#include <linux/usb/phy.h>
#include <linux/usb/samsung_usb_phy.h>
#include <plat/usb-phy.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/hcd.h>
+#include <linux/io.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
+
+#include "ehci.h"
+
+#define DRIVER_DESC "EHCI s5p driver"
#define EHCI_INSNREG00(base) (base + 0x90)
#define EHCI_INSNREG00_ENA_INCR16 (0x1 << 25)
@@ -30,6 +41,10 @@
(EHCI_INSNREG00_ENA_INCR16 | EHCI_INSNREG00_ENA_INCR8 | \
EHCI_INSNREG00_ENA_INCR4 | EHCI_INSNREG00_ENA_INCRX_ALIGN)
+static const char hcd_name[] = "ehci-s5p";
+static struct hc_driver __read_mostly s5p_ehci_hc_driver;
+
+
struct s5p_ehci_hcd {
struct device *dev;
struct usb_hcd *hcd;
@@ -39,36 +54,6 @@ struct s5p_ehci_hcd {
struct s5p_ehci_platdata *pdata;
};
-static const struct hc_driver s5p_ehci_hc_driver = {
- .description = hcd_name,
- .product_desc = "S5P EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- .reset = ehci_setup,
- .start = ehci_run,
- .stop = ehci_stop,
- .shutdown = ehci_shutdown,
-
- .get_frame_number = ehci_get_frame,
-
- .urb_enqueue = ehci_urb_enqueue,
- .urb_dequeue = ehci_urb_dequeue,
- .endpoint_disable = ehci_endpoint_disable,
- .endpoint_reset = ehci_endpoint_reset,
-
- .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 s5p_ehci_phy_enable(struct s5p_ehci_hcd *s5p_ehci)
{
@@ -322,5 +307,27 @@ static struct platform_driver s5p_ehci_driver = {
.of_match_table = of_match_ptr(exynos_ehci_match),
}
};
+static const struct ehci_driver_overrides s5p_overrides __initdata = {
+ .reset = ehci_setup,
+};
+
+static int __init ehci_s5p_init(void)
+{
+ if (usb_disabled())
+ return -ENODEV;
+
+ pr_info("%s: " DRIVER_DESC "\n", hcd_name);
+ ehci_init_driver(&s5p_ehci_hc_driver, &s5p_overrides);
+ return platform_driver_register(&s5p_ehci_driver);
+}
+module_init(ehci_s5p_init);
+
+static void __exit ehci_s5p_cleanup(void)
+{
+ platform_driver_unregister(&s5p_ehci_driver);
+}
+module_exit(ehci_s5p_cleanup);
-MODULE_ALIAS("platform:s5p-ehci");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_ALIAS("platform:ehci-s5p");
+MODULE_LICENSE("GPL");
--
1.7.9.5
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