This patch enables usb gadget for freescale mx51 babbage hw. It adds
a kconfig condition for enabling either host or gadget on the OTG
port.
Signed-off-by: Dinh Nguyen <Dinh.Nguyen@xxxxxxxxxxxxx>
---
arch/arm/mach-mx5/board-mx51_babbage.c | 11 +++++++++++
arch/arm/mach-mx5/clock-mx51.c | 2 ++
arch/arm/mach-mx5/devices.c | 12 ++++++++++++
arch/arm/mach-mx5/devices.h | 1 +
drivers/usb/host/Kconfig | 8 ++++++++
5 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index 99f7ea9..fac8ce0 100644
--- a/arch/arm/mach-mx5/board-mx51_babbage.c
+++ b/arch/arm/mach-mx5/board-mx51_babbage.c
@@ -15,6 +15,7 @@
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/io.h>
+#include <linux/fsl_devices.h>
#include <mach/common.h>
#include <mach/hardware.h>
@@ -179,6 +180,11 @@ static struct mxc_usbh_platform_data dr_utmi_config = {
.flags = MXC_EHCI_INTERNAL_PHY,
};
+static struct fsl_usb2_platform_data usb_pdata = {
+ .operating_mode = FSL_USB2_DR_DEVICE,
+ .phy_mode = FSL_USB2_PHY_UTMI_WIDE,
+};
+
static struct mxc_usbh_platform_data usbh1_config = {
.init = initialize_usbh1_port,
.portsc = MXC_EHCI_MODE_ULPI,
@@ -197,7 +203,12 @@ static void __init mxc_board_init(void)
mxc_init_imx_uart();
platform_add_devices(devices, ARRAY_SIZE(devices));
+#if defined(CONFIG_USB_EHCI_MXC_OTG)
mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
+#elif defined(CONFIG_USB_GADGET_FSL_USB2)
+ initialize_otg_port(NULL);
+ mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata);
+#endif
gpio_usbh1_active();
mxc_register_device(&mxc_usbh1_device, &usbh1_config);
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
index 933c0d1..ff15424 100644
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ b/arch/arm/mach-mx5/clock-mx51.c
@@ -786,6 +786,8 @@ static struct clk_lookup lookups[] = {
_REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk)
_REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk)
_REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", ahb_clk)
+ _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk)
+ _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk)
};
static void clk_tree_init(void)
diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c
index e6262f3..23850e6 100644
--- a/arch/arm/mach-mx5/devices.c
+++ b/arch/arm/mach-mx5/devices.c
@@ -107,6 +107,18 @@ static struct resource usbotg_resources[] = {
},
};
+/* OTG gadget device */
+struct platform_device mxc_usbdr_udc_device = {
+ .name = "fsl-usb2-udc",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(usbotg_resources),
+ .resource = usbotg_resources,
+ .dev = {
+ .dma_mask = &usb_dma_mask,
+ .coherent_dma_mask = DMA_BIT_MASK(32),
+ },
+};
+
struct platform_device mxc_usbdr_host_device = {
.name = "mxc-ehci",
.id = 0,
diff --git a/arch/arm/mach-mx5/devices.h b/arch/arm/mach-mx5/devices.h
index 95c45f9..0494d6b 100644
--- a/arch/arm/mach-mx5/devices.h
+++ b/arch/arm/mach-mx5/devices.h
@@ -4,3 +4,4 @@ extern struct platform_device mxc_uart_device2;
extern struct platform_device mxc_fec_device;
extern struct platform_device mxc_usbdr_host_device;
extern struct platform_device mxc_usbh1_device;
+extern struct platform_device mxc_usbdr_udc_device;
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 8d3df03..da58a2e 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -123,6 +123,14 @@ config USB_EHCI_MXC
---help---
Variation of ARC USB block used in some Freescale chips.
+config USB_EHCI_MXC_OTG
+ bool "Support for DR host port on Freescale controller"
+ depends on USB_EHCI_MXC && (ARCH_MX51)
+ ---help---
+ Enable support for the USB OTG port in HS/FS Host mode.
+ NOTE: Unless the OTG feature is enabled, EHCI and Gadget feature
+ for the OTG port should be mutually exclusive.
+
config USB_EHCI_HCD_PPC_OF
bool "EHCI support for PPC USB controller on OF platform bus"
depends on USB_EHCI_HCD && PPC_OF
--
1.6.0.4
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