EFM32: Port USB device and host drivers from STM32. Still does not compile

arch/arm/src/efm32/Kconfig

@@ -73,7 +73,7 @@ config EFM32_EFM32GG
 	select EFM32_HAVE_UART0
 	select EFM32_HAVE_UART1
 	select EFM32_HAVE_LEUART1
-	select EFM32_HAVE_USBFSOTG
+	select EFM32_HAVE_OTGFS
 
 menu "EFM32 Peripheral Support"
 
@@ -96,7 +96,7 @@ config EFM32_HAVE_LEUART1
 	bool
 	default n
 
-config EFM32_HAVE_USBFSOTG
+config EFM32_HAVE_OTGFS
 	bool
 	default n
 
@@ -169,10 +169,10 @@ config EFM32_LEUART1
 	select ARCH_HAVE_OTHER_UART
 	select EFM32_LEUART
 
-config EFM32_USBFSOTG
+config EFM32_OTGFS
 	bool "USB Full-Speed OTG"
 	default n
-	depends on EFM32_HAVE_USBFSOTG && EXPERIMENTAL
+	depends on EFM32_HAVE_OTGFS && EXPERIMENTAL
 
 endmenu # EFM32 Peripheral Support
 
@@ -392,4 +392,39 @@ endif # EFM32_SPI_DMA
 endmenu # SPI Configuration
 endif # EFM32_USART_ISSPI
 
+menu "USB FS Host Configuration"
+	depends on USBHOST && EFM32_OTGFS
+
+config EFM32_OTGFS_RXFIFO_SIZE
+	int "Rx Packet Size"
+	default 128
+	---help---
+		Size of the RX FIFO in 32-bit words. Default 128 (512 bytes)
+
+config EFM32_OTGFS_NPTXFIFO_SIZE
+	int "Non-periodic Tx FIFO Size"
+	default 96
+	---help---
+		Size of the non-periodic Tx FIFO in 32-bit words.  Default 96 (384 bytes)
+
+config EFM32_OTGFS_PTXFIFO_SIZE
+	int "Periodic Tx FIFO size"
+	default 128
+	---help---
+		Size of the periodic Tx FIFO in 32-bit words.  Default 96 (384 bytes)
+
+config EFM32_OTGFS_DESCSIZE
+	int "Descriptor Size"
+	default 128
+	---help---
+		Maximum size to allocate for descriptor memory descriptor.  Default: 128
+
+config EFM32_OTGFS_SOFINTR
+	bool "Enable SOF interrupts"
+	default n
+	---help---
+		Enable SOF interrupts.  Why would you ever want to do that?
+
+endmenu
+
 endif # ARCH_CHIP_EFM32

arch/arm/src/efm32/Make.defs

@@ -127,7 +127,7 @@ ifeq ($(CONFIG_EFM32_DMA),y)
 CHIP_CSRCS += efm32_dma.c
 endif
 
-ifeq ($(CONFIG_EFM32_USBFSOTG),y)
+ifeq ($(CONFIG_EFM32_OTGFS),y)
 ifeq ($(CONFIG_USBDEV),y)
 CHIP_CSRCS += efm32_usbdev.c
 endif

arch/arm/src/efm32/efm32_usb.h

@@ -0,0 +1,126 @@
+/************************************************************************************
+ * arch/arm/src/efm32/efm32_usb.h
+ *
+ *   Copyright (C) 2014 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ************************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_EFM32_EFM32_OTGFS_H
+#define __ARCH_ARM_SRC_EFM32_EFM32_OTGFS_H
+
+/************************************************************************************
+ * Included Files
+ ************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include "chip/efm32_usb.h"
+
+#if defined(CONFIG_EFM32_OTGFS)
+
+/************************************************************************************
+ * Pre-processor Definitions
+ ************************************************************************************/
+/* Configuration ********************************************************************/
+
+#ifndef CONFIG_OTGFS_PRI
+#  define CONFIG_OTGFS_PRI NVIC_SYSH_PRIORITY_DEFAULT
+#endif
+
+/************************************************************************************
+ * Public Functions
+ ************************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/*******************************************************************************
+ * Name: efm32_otgfshost_initialize
+ *
+ * Description:
+ *   Initialize USB host device controller hardware.
+ *
+ * Input Parameters:
+ *   controller -- If the device supports more than USB host controller, then
+ *     this identifies which controller is being initializeed.  Normally, this
+ *     is just zero.
+ *
+ * Returned Value:
+ *   And instance of the USB host interface.  The controlling task should
+ *   use this interface to (1) call the wait() method to wait for a device
+ *   to be connected, and (2) call the enumerate() method to bind the device
+ *   to a class driver.
+ *
+ * Assumptions:
+ * - This function should called in the initialization sequence in order
+ *   to initialize the USB device functionality.
+ * - Class drivers should be initialized prior to calling this function.
+ *   Otherwise, there is a race condition if the device is already connected.
+ *
+ *******************************************************************************/
+
+#ifdef CONFIG_USBHOST
+struct usbhost_connection_s;
+FAR struct usbhost_connection_s *efm32_otgfshost_initialize(int controller);
+#endif
+
+/************************************************************************************
+ * Name:  efm32_usbsuspend
+ *
+ * Description:
+ *   Board logic must provide the efm32_usbsuspend logic if the OTG FS device driver
+ *   is used.  This function is called whenever the USB enters or leaves suspend
+ *   mode. This is an opportunity for the board logic to shutdown clocks, power,
+ *   etc. while the USB is suspended.
+ *
+ ************************************************************************************/
+
+void efm32_usbsuspend(FAR struct usbdev_s *dev, bool resume);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_EFM32_OTGFS */
+#endif /* __ARCH_ARM_SRC_EFM32_EFM32_OTGFS_H */
+