mx31moboard: OTG host support for smartbot board
The Eyebot robot needs the OTG port in host mode on the smartbot.
Add a new board definition so we can select the usb host/device
mode at boot with the mx31moboard_baseboard boot parameter.
Signed-off-by: Philippe Rétornaz <philippe.retornaz@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
diff --git a/arch/arm/mach-mx3/mach-mx31moboard.c b/arch/arm/mach-mx3/mach-mx31moboard.c
index 4bb011a..33a8d35 100644
--- a/arch/arm/mach-mx3/mach-mx31moboard.c
+++ b/arch/arm/mach-mx3/mach-mx31moboard.c
@@ -491,7 +491,8 @@
mx31moboard_marxbot_init();
break;
case MX31SMARTBOT:
- mx31moboard_smartbot_init();
+ case MX31EYEBOT:
+ mx31moboard_smartbot_init(mx31moboard_baseboard);
break;
default:
printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n",
diff --git a/arch/arm/mach-mx3/mx31moboard-smartbot.c b/arch/arm/mach-mx3/mx31moboard-smartbot.c
index ac1a163..293eea6 100644
--- a/arch/arm/mach-mx3/mx31moboard-smartbot.c
+++ b/arch/arm/mach-mx3/mx31moboard-smartbot.c
@@ -25,10 +25,16 @@
#include <linux/types.h>
#include <linux/fsl_devices.h>
+#include <linux/usb/otg.h>
+#include <linux/usb/ulpi.h>
+
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx3.h>
+#include <mach/board-mx31moboard.h>
+#include <mach/mxc_ehci.h>
+#include <mach/ulpi.h>
#include <media/soc_camera.h>
@@ -122,6 +128,24 @@
.phy_mode = FSL_USB2_PHY_ULPI,
};
+#if defined(CONFIG_USB_ULPI)
+
+static struct mxc_usbh_platform_data otg_host_pdata = {
+ .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
+ .flags = MXC_EHCI_POWER_PINS_ENABLED,
+};
+
+static int __init smartbot_otg_host_init(void)
+{
+ otg_host_pdata.otg = otg_ulpi_create(&mxc_ulpi_access_ops,
+ USB_OTG_DRV_VBUS | USB_OTG_DRV_VBUS_EXT);
+
+ return mxc_register_device(&mxc_otg_host, &otg_host_pdata);
+}
+#else
+static inline int smartbot_otg_host_init(void) { return 0; }
+#endif
+
#define POWER_EN IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1)
#define DSPIC_RST_B IOMUX_TO_GPIO(MX31_PIN_DSR_DCE1)
#define TRSLAT_RST_B IOMUX_TO_GPIO(MX31_PIN_RI_DCE1)
@@ -152,7 +176,7 @@
/*
* system init for baseboard usage. Will be called by mx31moboard init.
*/
-void __init mx31moboard_smartbot_init(void)
+void __init mx31moboard_smartbot_init(int board)
{
printk(KERN_INFO "Initializing mx31smartbot peripherals\n");
@@ -161,7 +185,18 @@
mxc_register_device(&mxc_uart_device1, &uart_pdata);
- mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
+
+ switch (board) {
+ case MX31SMARTBOT:
+ mxc_register_device(&mxc_otg_udc_device, &usb_pdata);
+ break;
+ case MX31EYEBOT:
+ smartbot_otg_host_init();
+ break;
+ default:
+ printk(KERN_WARNING "Unknown board %d, USB OTG not initialized",
+ board);
+ }
smartbot_resets_init();