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>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/io.h>
#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>
#include <mach/common.h>
#include <mach/hardware.h>
.flags = MXC_EHCI_INTERNAL_PHY,
};
.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 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.
*/
/*
* Board specific initialization.
*/
mxc_init_imx_uart();
platform_add_devices(devices, ARRAY_SIZE(devices));
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);
gpio_usbh1_active();
mxc_register_device(&mxc_usbh1_device, &usbh1_config);
_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("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)
};
static void clk_tree_init(void)
+/* 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,
struct platform_device mxc_usbdr_host_device = {
.name = "mxc-ehci",
.id = 0,
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_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;