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authorDinh Nguyen <Dinh.Nguyen@freescale.com>2010-05-10 13:45:59 -0500
committerSascha Hauer <s.hauer@pengutronix.de>2010-05-11 08:49:54 +0200
commit2ba5a2c0d8e0f62916a885170f28786141f08f76 (patch)
treee321c91bbb82a90aa39ebd026d62a7ada6cd36b3 /arch/arm/mach-mx5/board-mx51_babbage.c
parentc79504e73a0e84c4db7a2315dcdd6987b0c52566 (diff)
mx5: enable usb gadget for freescale mx51 babbage board
This patch enables usb gadget for freescale mx51 babbage hw. By default, the OTG port will be in device mode. To put the OTG port into Host mode, pass "otg_mode=host" in the exec command. This patch applies to 2.6.34-rc7. Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-mx5/board-mx51_babbage.c')
-rw-r--r--arch/arm/mach-mx5/board-mx51_babbage.c28
1 files changed, 27 insertions, 1 deletions
diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
index 99f7ea903a51..dacf506f18ba 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>
@@ -179,12 +180,32 @@ 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,
.flags = (MXC_EHCI_POWER_PINS_ENABLED | MXC_EHCI_ITC_NO_THRESHOLD),
};
+static int otg_mode_host;
+
+static int __init babbage_otg_mode(char *options)
+{
+ if (!strcmp(options, "host"))
+ otg_mode_host = 1;
+ else if (!strcmp(options, "device"))
+ otg_mode_host = 0;
+ else
+ pr_info("otg_mode neither \"host\" nor \"device\". "
+ "Defaulting to device\n");
+ return 0;
+}
+__setup("otg_mode=", babbage_otg_mode);
+
/*
* Board specific initialization.
*/
@@ -197,7 +218,12 @@ static void __init mxc_board_init(void)
mxc_init_imx_uart();
platform_add_devices(devices, ARRAY_SIZE(devices));
- mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
+ if (otg_mode_host)
+ mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
+ else {
+ initialize_otg_port(NULL);
+ mxc_register_device(&mxc_usbdr_udc_device, &usb_pdata);
+ }
gpio_usbh1_active();
mxc_register_device(&mxc_usbh1_device, &usbh1_config);