Re: [V2 2/8] USB: EHCI: make ehci-atmel a separate driver
From: Bo Shen
Date: Mon Feb 18 2013 - 04:51:50 EST
On 02/15/2013 06:24 PM, Manjunath Goudar wrote:
Separate the Atmel host controller driver from ehci-hcd host code
into its own driver module.
In V2:
Resolved below compiler error.
drivers/usb/host/ehci-atmel.c: In function 'ehci_atmel_drv_remove':
drivers/usb/host/ehci-atmel.c:167: error: implicit declaration of function 'ehci_shutdown'
Signed-off-by: Manjunath Goudar<manjunath.goudar@xxxxxxxxxx>
Cc: Alan Stern<stern@xxxxxxxxxxxxxxxxxxx>
Cc: Greg KH<greg@xxxxxxxxx>
Cc: Grant Likely<grant.likely@xxxxxxxxxxxx>
Cc: Rob Herring<rob.herring@xxxxxxxxxxx>
Cc: Andrew Victor<linux@xxxxxxxxxxxx>
Cc: Nicolas Ferre<nicolas.ferre@xxxxxxxxx>
Cc: Jean-Christophe Plagniol-Villard<plagnioj@xxxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
drivers/usb/host/Kconfig | 8 +++++
drivers/usb/host/Makefile | 1 +
drivers/usb/host/ehci-atmel.c | 76 ++++++++++++++++++++++-------------------
drivers/usb/host/ehci-hcd.c | 10 ++----
drivers/usb/host/ehci.h | 2 +-
5 files changed, 53 insertions(+), 44 deletions(-)
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 15e8032..1ef37d7 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -170,6 +170,14 @@ config USB_EHCI_HCD_SPEAR
Enables support for the on-chip EHCI controller on
ST SPEAr chips.
+config USB_EHCI_HCD_AT91
+ tristate "Support for Atmel on-chip EHCI USB controller"
+ depends on USB_EHCI_HCD&& ARCH_AT91
+ default y
+ ---help---
+ Enables support for the on-chip EHCI controller on
+ Atmel chips.
+
config USB_EHCI_MSM
bool "Support for MSM on-chip EHCI USB controller"
depends on USB_EHCI_HCD&& ARCH_MSM
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index c8fcde9..b301243 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_USB_EHCI_HCD_PLATFORM) += ehci-platform.o
obj-$(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_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-atmel.c b/drivers/usb/host/ehci-atmel.c
index 27639487..3cd0dd4 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -15,6 +15,19 @@
#include<linux/platform_device.h>
#include<linux/of.h>
#include<linux/of_platform.h>
+#include<linux/kernel.h>
+#include<linux/module.h>
+#include<linux/usb.h>
+#include<linux/usb/hcd.h>
+#include<linux/io.h>
+#include<linux/dma-mapping.h>
+
+#include "ehci.h"
+
+#define DRIVER_DESC "EHCI atmel driver"
+
+static const char hcd_name[] = "ehci-atmel";
+static struct hc_driver __read_mostly ehci_atmel_hc_driver;
/* interface and function clocks */
static struct clk *iclk, *fclk;
@@ -60,41 +73,6 @@ static int ehci_atmel_setup(struct usb_hcd *hcd)
return ehci_setup(hcd);
}
-static const struct hc_driver ehci_atmel_hc_driver = {
- .description = hcd_name,
- .product_desc = "Atmel EHCI UHP HS",
- .hcd_priv_size = sizeof(struct ehci_hcd),
-
- /* generic hardware linkage */
- .irq = ehci_irq,
- .flags = HCD_MEMORY | HCD_USB2,
-
- /* basic lifecycle operations */
- .reset = ehci_atmel_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 u64 at91_ehci_dma_mask = DMA_BIT_MASK(32);
static int ehci_atmel_drv_probe(struct platform_device *pdev)
@@ -210,7 +188,33 @@ static struct platform_driver ehci_atmel_driver = {
.remove = ehci_atmel_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
- .name = "atmel-ehci",
+ .name = hcd_name,
This change will cause atmel ehci won't work with the none device tree
kernel.
it can be fixed with replace other places using "atmel-ehci" with
<hcd_name>, that means replace "atmel-ehci" with "ehci-atmel" at other
places.
Best Regards,
Bo Shen
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