tinyUSB/tinyusb/hal/hal_lpc43xx.c

/**************************************************************************/
/*!
    @file     hal_lpc43xx.c
    @author   hathach (tinyusb.org)

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2013, hathach (tinyusb.org)
    All rights reserved.

    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 of the copyright holders 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 ''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 HOLDER 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.

    This file is part of the tinyusb stack.
*/
/**************************************************************************/

#include "common/common.h"
#include "hal.h"

#if MCU == MCU_LPC43XX

#include "lpc43xx_cgu.h"
#include "lpc43xx_scu.h"

enum {
  LPC43XX_USBMODE_DEVICE = 2,
  LPC43XX_USBMODE_HOST   = 3
};

enum {
  LPC43XX_USBMODE_VBUS_LOW  = 0,
  LPC43XX_USBMODE_VBUS_HIGH = 1
};

tusb_error_t hal_init(void)
{
  //------------- USB0 Clock -------------//
#if TUSB_CFG_CONTROLLER0_MODE
  CGU_EnableEntity(CGU_CLKSRC_PLL0, DISABLE); /* Disable PLL first */
  ASSERT_INT( CGU_ERROR_SUCCESS, CGU_SetPLL0(), TUSB_ERROR_FAILED); /* the usb core require output clock = 480MHz */
  CGU_EntityConnect(CGU_CLKSRC_XTAL_OSC, CGU_CLKSRC_PLL0);
  CGU_EnableEntity(CGU_CLKSRC_PLL0, ENABLE);   /* Enable PLL after all setting is done */
  LPC_CREG->CREG0 &= ~(1<<5); /* Turn on the phy */

  // reset controller & set role
  #if TUSB_CFG_CONTROLLER0_MODE & TUSB_MODE_HOST
    hcd_controller_reset(0); // TODO where to place prototype
    LPC_USB0->USBMODE_H = LPC43XX_USBMODE_HOST | (LPC43XX_USBMODE_VBUS_HIGH << 5);
  #else // TODO OTG
//    dcd_controller_reset(0);
//    LPC_USB0->USBMODE_D = LPC43XX_USBMODE_DEVICE;
//    LPC_USB0->OTGSC = (1<<3) | (1<<0) /*| (1<<16)| (1<<24)| (1<<25)| (1<<26)| (1<<27)| (1<<28)| (1<<29)| (1<<30)*/;
//    LPC_USB0->PORTSC1_D |= (1<<24); // force full speed
//    dcd_controller_connect(0);
  #endif

  hal_interrupt_enable(0);
#endif

  //------------- USB1 Clock, only use on-chip FS PHY -------------//
#if TUSB_CFG_CONTROLLER1_MODE
  // TODO confirm whether device mode require P2_5 or not
  scu_pinmux(0x2, 5, MD_PLN | MD_EZI | MD_ZI, FUNC2);	// USB1_VBUS monitor presence, must be high for bus reset occur

  /* connect CLK_USB1 to 60 MHz clock */
  CGU_EntityConnect(CGU_CLKSRC_PLL1, CGU_BASE_USB1); /* FIXME Run base BASE_USB1_CLK clock from PLL1 (assume PLL1 is 60 MHz, no division required) */
  //LPC_CREG->CREG0 &= ~(1<<5); /* Turn on the phy */
  LPC_SCU->SFSUSB = (TUSB_CFG_CONTROLLER1_MODE & TUSB_MODE_HOST) ? 0x16 : 0x12; // enable USB1 with on-chip FS PHY

  #if TUSB_CFG_CONTROLLER1_MODE & TUSB_MODE_HOST
    hcd_controller_reset(1); // TODO where to place prototype
    LPC_USB1->USBMODE_H = LPC43XX_USBMODE_HOST | (LPC43XX_USBMODE_VBUS_HIGH << 5);
  #else // TODO OTG
//    dcd_controller_reset(1);
    LPC_USB0->USBMODE_D = LPC43XX_USBMODE_DEVICE;
    dcd_controller_connect(1);
  #endif

  LPC_USB1->PORTSC1_D |= (1<<24); // TODO abtract, force port to fullspeed

  hal_interrupt_enable(1);
#endif

  return TUSB_ERROR_NONE;
}

#if TUSB_CFG_CONTROLLER0_MODE
void USB0_IRQHandler(void)
{
  tusb_isr(0);
}
#endif

#if TUSB_CFG_CONTROLLER1_MODE
void USB1_IRQHandler(void)
{
  tusb_isr(1);
}
#endif

#endif