/************************************************************************************
* configs/shenzhou/src/up_usbdev.c
* arch/arm/src/board/up_boot.c
*
* Copyright (C) 2012 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.
*
************************************************************************************/
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <sched.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbhost.h>
#include <nuttx/usb/usbdev_trace.h>
#include "up_arch.h"
#include "stm32_internal.h"
#include "shenshou-internal.h"
#ifdef CONFIG_STM32_OTGFS
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#if defined(CONFIG_USBDEV) || defined(CONFIG_USBHOST)
# define HAVE_USB 1
#else
# warning "CONFIG_STM32_OTGFS is enabled but neither CONFIG_USBDEV nor CONFIG_USBHOST"
# undef HAVE_USB
#endif
#ifndef CONFIG_USBHOST_DEFPRIO
# define CONFIG_USBHOST_DEFPRIO 50
#endif
#ifndef CONFIG_USBHOST_STACKSIZE
# define CONFIG_USBHOST_STACKSIZE 1024
#endif
/************************************************************************************
* Private Data
************************************************************************************/
#ifdef CONFIG_USBHOST
static struct usbhost_driver_s *g_drvr;
#endif
/************************************************************************************
* Private Functions
************************************************************************************/
/************************************************************************************
* Name: usbhost_waiter
*
* Description:
* Wait for USB devices to be connected.
*
************************************************************************************/
#ifdef CONFIG_USBHOST
static int usbhost_waiter(int argc, char *argv[])
{
bool connected = false;
int ret;
uvdbg("Running\n");
for (;;)
{
/* Wait for the device to change state */
ret = DRVR_WAIT(g_drvr, connected);
DEBUGASSERT(ret == OK);
connected = !connected;
uvdbg("%s\n", connected ? "connected" : "disconnected");
/* Did we just become connected? */
if (connected)
{
/* Yes.. enumerate the newly connected device */
(void)DRVR_ENUMERATE(g_drvr);
}
}
/* Keep the compiler from complaining */
return 0;
}
#endif
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: stm32_usbinitialize
*
* Description:
* Called from stm32_usbinitialize very early in inialization to setup USB-related
* GPIO pins for the STM3240G-EVAL board.
*
************************************************************************************/
void stm32_usbinitialize(void)
{
/* The OTG FS has an internal soft pull-up. No GPIO configuration is required */
/* Configure the OTG FS VBUS sensing GPIO, Power On, and Overcurrent GPIOs */
#ifdef CONFIG_STM32_OTGFS
stm32_configgpio(GPIO_OTGFS_VBUS);
stm32_configgpio(GPIO_OTGFS_PWRON);
stm32_configgpio(GPIO_OTGFS_OVER);
#endif
}
/***********************************************************************************
* Name: stm32_usbhost_initialize
*
* Description:
* Called at application startup time to initialize the USB host functionality.
* This function will start a thread that will monitor for device
* connection/disconnection events.
*
***********************************************************************************/
#ifdef CONFIG_USBHOST
int stm32_usbhost_initialize(void)
{
int pid;
int ret;
/* First, register all of the class drivers needed to support the drivers
* that we care about:
*/
uvdbg("Register class drivers\n");
ret = usbhost_storageinit();
if (ret != OK)
{
udbg("Failed to register the mass storage class\n");
}
/* Then get an instance of the USB host interface */
uvdbg("Initialize USB host\n");
g_drvr = usbhost_initialize(0);
if (g_drvr)
{
/* Start a thread to handle device connection. */
uvdbg("Start usbhost_waiter\n");
pid = TASK_CREATE("usbhost", CONFIG_USBHOST_DEFPRIO,
CONFIG_USBHOST_STACKSIZE,
(main_t)usbhost_waiter, (const char **)NULL);
return pid < 0 ? -ENOEXEC : OK;
}
return -ENODEV;
}
#endif
/***********************************************************************************
* Name: stm32_usbhost_vbusdrive
*
* Description:
* Enable/disable driving of VBUS 5V output. This function must be provided be
* each platform that implements the STM32 OTG FS host interface
*
* "On-chip 5 V VBUS generation is not supported. For this reason, a charge pump
* or, if 5 V are available on the application board, a basic power switch, must
* be added externally to drive the 5 V VBUS line. The external charge pump can
* be driven by any GPIO output. When the application decides to power on VBUS
* using the chosen GPIO, it must also set the port power bit in the host port
* control and status register (PPWR bit in OTG_FS_HPRT).
*
* "The application uses this field to control power to this port, and the core
* clears this bit on an overcurrent condition."
*
* Input Parameters:
* iface - For future growth to handle multiple USB host interface. Should be zero.
* enable - true: enable VBUS power; false: disable VBUS power
*
* Returned Value:
* None
*
***********************************************************************************/
#ifdef CONFIG_USBHOST
void stm32_usbhost_vbusdrive(int iface, bool enable)
{
DEBUGASSERT(iface == 0);
if (enable)
{
/* Enable the Power Switch by driving the enable pin low */
stm32_gpiowrite(GPIO_OTGFS_PWRON, false);
}
else
{
/* Disable the Power Switch by driving the enable pin high */
stm32_gpiowrite(GPIO_OTGFS_PWRON, true);
}
}
#endif
/************************************************************************************
* Name: stm32_setup_overcurrent
*
* Description:
* Setup to receive an interrupt-level callback if an overcurrent condition is
* detected.
*
* Input paramter:
* handler - New overcurrent interrupt handler
*
* Returned value:
* Old overcurrent interrupt handler
*
************************************************************************************/
#ifdef CONFIG_USBHOST
xcpt_t stm32_setup_overcurrent(xcpt_t handler)
{
return NULL;
}
#endif
/************************************************************************************
* Name: stm32_usbsuspend
*
* Description:
* Board logic must provide the stm32_usbsuspend logic if the USBDEV 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.
*
************************************************************************************/
#ifdef CONFIG_USBDEV
void stm32_usbsuspend(FAR struct usbdev_s *dev, bool resume)
{
ulldbg("resume: %d\n", resume);
}
#endif
#endif /* CONFIG_STM32_OTGFS */
