419 lines
9.9 KiB
C
419 lines
9.9 KiB
C
|
/**
|
||
|
|
******************************************************************************
|
||
|
|
* @file usb_otg.c
|
||
|
|
* @author MCD Application Team
|
||
|
|
* @version V2.1.0
|
||
|
|
* @date 19-March-2012
|
||
|
|
* @brief OTG Core Layer
|
||
|
|
******************************************************************************
|
||
|
|
* @attention
|
||
|
|
*
|
||
|
|
* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
|
||
|
|
*
|
||
|
|
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
|
||
|
|
* You may not use this file except in compliance with the License.
|
||
|
|
* You may obtain a copy of the License at:
|
||
|
|
*
|
||
|
|
* http://www.st.com/software_license_agreement_liberty_v2
|
||
|
|
*
|
||
|
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
* See the License for the specific language governing permissions and
|
||
|
|
* limitations under the License.
|
||
|
|
*
|
||
|
|
******************************************************************************
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Includes ------------------------------------------------------------------*/
|
||
|
|
#include "usb_defines.h"
|
||
|
|
#include "usb_regs.h"
|
||
|
|
#include "usb_core.h"
|
||
|
|
#include "usb_otg.h"
|
||
|
|
|
||
|
|
/** @addtogroup USB_OTG_DRIVER
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG
|
||
|
|
* @brief This file is the interface between EFSL ans Host mass-storage class
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_Defines
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_TypesDefinitions
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_Macros
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_Variables
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_FunctionPrototypes
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev);
|
||
|
|
|
||
|
|
static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev);
|
||
|
|
static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev);
|
||
|
|
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/** @defgroup USB_OTG_Private_Functions
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/* OTG Interrupt Handler */
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief STM32_USBO_OTG_ISR_Handler
|
||
|
|
*
|
||
|
|
* @param None
|
||
|
|
* @retval : None
|
||
|
|
*/
|
||
|
|
uint32_t STM32_USBO_OTG_ISR_Handler(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
uint32_t retval = 0;
|
||
|
|
USB_OTG_GINTSTS_TypeDef gintsts ;
|
||
|
|
gintsts.d32 = 0;
|
||
|
|
|
||
|
|
gintsts.d32 = USB_OTG_Read_itr(pdev);
|
||
|
|
if (gintsts.d32 == 0)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
if (gintsts.b.otgintr)
|
||
|
|
{
|
||
|
|
retval |= USB_OTG_HandleOTG_ISR(pdev);
|
||
|
|
}
|
||
|
|
if (gintsts.b.conidstschng)
|
||
|
|
{
|
||
|
|
retval |= USB_OTG_HandleConnectorIDStatusChange_ISR(pdev);
|
||
|
|
}
|
||
|
|
if (gintsts.b.sessreqintr)
|
||
|
|
{
|
||
|
|
retval |= USB_OTG_HandleSessionRequest_ISR(pdev);
|
||
|
|
}
|
||
|
|
return retval;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_Read_itr
|
||
|
|
* returns the Core Interrupt register
|
||
|
|
* @param None
|
||
|
|
* @retval : status
|
||
|
|
*/
|
||
|
|
static uint32_t USB_OTG_Read_itr(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
USB_OTG_GINTSTS_TypeDef gintsts;
|
||
|
|
USB_OTG_GINTMSK_TypeDef gintmsk;
|
||
|
|
USB_OTG_GINTMSK_TypeDef gintmsk_common;
|
||
|
|
|
||
|
|
|
||
|
|
gintsts.d32 = 0;
|
||
|
|
gintmsk.d32 = 0;
|
||
|
|
gintmsk_common.d32 = 0;
|
||
|
|
|
||
|
|
/* OTG interrupts */
|
||
|
|
gintmsk_common.b.sessreqintr = 1;
|
||
|
|
gintmsk_common.b.conidstschng = 1;
|
||
|
|
gintmsk_common.b.otgintr = 1;
|
||
|
|
|
||
|
|
gintsts.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTSTS);
|
||
|
|
gintmsk.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GINTMSK);
|
||
|
|
return ((gintsts.d32 & gintmsk.d32 ) & gintmsk_common.d32);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_HandleOTG_ISR
|
||
|
|
* handles the OTG Interrupts
|
||
|
|
* @param None
|
||
|
|
* @retval : status
|
||
|
|
*/
|
||
|
|
static uint32_t USB_OTG_HandleOTG_ISR(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
USB_OTG_GOTGINT_TypeDef gotgint;
|
||
|
|
USB_OTG_GOTGCTL_TypeDef gotgctl;
|
||
|
|
|
||
|
|
|
||
|
|
gotgint.d32 = 0;
|
||
|
|
gotgctl.d32 = 0;
|
||
|
|
|
||
|
|
gotgint.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGINT);
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
|
||
|
|
|
||
|
|
if (gotgint.b.sesenddet)
|
||
|
|
{
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
|
||
|
|
|
||
|
|
|
||
|
|
if (USB_OTG_IsDeviceMode(pdev))
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
else if (USB_OTG_IsHostMode(pdev))
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ----> SRP SUCCESS or FAILURE INTERRUPT <---- */
|
||
|
|
if (gotgint.b.sesreqsucstschng)
|
||
|
|
{
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
|
||
|
|
if (gotgctl.b.sesreqscs) /* Session request success */
|
||
|
|
{
|
||
|
|
if (USB_OTG_IsDeviceMode(pdev))
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/* Clear Session Request */
|
||
|
|
gotgctl.d32 = 0;
|
||
|
|
gotgctl.b.sesreq = 1;
|
||
|
|
USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GOTGCTL, gotgctl.d32, 0);
|
||
|
|
}
|
||
|
|
else /* Session request failure */
|
||
|
|
{
|
||
|
|
if (USB_OTG_IsDeviceMode(pdev))
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/* ----> HNP SUCCESS or FAILURE INTERRUPT <---- */
|
||
|
|
if (gotgint.b.hstnegsucstschng)
|
||
|
|
{
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
|
||
|
|
|
||
|
|
if (gotgctl.b.hstnegscs) /* Host negotiation success */
|
||
|
|
{
|
||
|
|
if (USB_OTG_IsHostMode(pdev)) /* The core AUTOMATICALLY sets the Host mode */
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else /* Host negotiation failure */
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
gotgint.b.hstnegsucstschng = 1; /* Ack "Host Negotiation Success Status Change" interrupt. */
|
||
|
|
}
|
||
|
|
/* ----> HOST NEGOTIATION DETECTED INTERRUPT <---- */
|
||
|
|
if (gotgint.b.hstnegdet)
|
||
|
|
{
|
||
|
|
if (USB_OTG_IsDeviceMode(pdev)) /* The core AUTOMATICALLY sets the Host mode */
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (gotgint.b.adevtoutchng)
|
||
|
|
{}
|
||
|
|
if (gotgint.b.debdone)
|
||
|
|
{
|
||
|
|
USB_OTG_ResetPort(pdev);
|
||
|
|
}
|
||
|
|
/* Clear OTG INT */
|
||
|
|
USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGINT, gotgint.d32);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_HandleConnectorIDStatusChange_ISR
|
||
|
|
* handles the Connector ID Status Change Interrupt
|
||
|
|
* @param None
|
||
|
|
* @retval : status
|
||
|
|
*/
|
||
|
|
static uint32_t USB_OTG_HandleConnectorIDStatusChange_ISR(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
USB_OTG_GINTMSK_TypeDef gintmsk;
|
||
|
|
USB_OTG_GOTGCTL_TypeDef gotgctl;
|
||
|
|
USB_OTG_GINTSTS_TypeDef gintsts;
|
||
|
|
|
||
|
|
gintsts.d32 = 0 ;
|
||
|
|
gintmsk.d32 = 0 ;
|
||
|
|
gotgctl.d32 = 0 ;
|
||
|
|
gintmsk.b.sofintr = 1;
|
||
|
|
|
||
|
|
USB_OTG_MODIFY_REG32(&pdev->regs.GREGS->GINTMSK, gintmsk.d32, 0);
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32(&pdev->regs.GREGS->GOTGCTL);
|
||
|
|
|
||
|
|
/* B-Device connector (Device Mode) */
|
||
|
|
if (gotgctl.b.conidsts)
|
||
|
|
{
|
||
|
|
USB_OTG_DisableGlobalInt(pdev);
|
||
|
|
USB_OTG_CoreInitDev(pdev);
|
||
|
|
USB_OTG_EnableGlobalInt(pdev);
|
||
|
|
pdev->otg.OTG_State = B_PERIPHERAL;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
USB_OTG_DisableGlobalInt(pdev);
|
||
|
|
USB_OTG_CoreInitHost(pdev);
|
||
|
|
USB_OTG_EnableGlobalInt(pdev);
|
||
|
|
pdev->otg.OTG_State = A_HOST;
|
||
|
|
}
|
||
|
|
/* Set flag and clear interrupt */
|
||
|
|
gintsts.b.conidstschng = 1;
|
||
|
|
USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_HandleSessionRequest_ISR
|
||
|
|
* Initiating the Session Request Protocol
|
||
|
|
* @param None
|
||
|
|
* @retval : status
|
||
|
|
*/
|
||
|
|
static uint32_t USB_OTG_HandleSessionRequest_ISR(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
USB_OTG_GINTSTS_TypeDef gintsts;
|
||
|
|
USB_OTG_GOTGCTL_TypeDef gotgctl;
|
||
|
|
|
||
|
|
|
||
|
|
gotgctl.d32 = 0;
|
||
|
|
gintsts.d32 = 0;
|
||
|
|
|
||
|
|
gotgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
|
||
|
|
if (USB_OTG_IsDeviceMode(pdev) && (gotgctl.b.bsesvld))
|
||
|
|
{
|
||
|
|
}
|
||
|
|
else if (gotgctl.b.asesvld)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
/* Clear interrupt */
|
||
|
|
gintsts.d32 = 0;
|
||
|
|
gintsts.b.sessreqintr = 1;
|
||
|
|
USB_OTG_WRITE_REG32 (&pdev->regs.GREGS->GINTSTS, gintsts.d32);
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_InitiateSRP
|
||
|
|
* Initiate an srp session
|
||
|
|
* @param None
|
||
|
|
* @retval : None
|
||
|
|
*/
|
||
|
|
void USB_OTG_InitiateSRP(USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
USB_OTG_GOTGCTL_TypeDef otgctl;
|
||
|
|
|
||
|
|
otgctl.d32 = 0;
|
||
|
|
|
||
|
|
otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
|
||
|
|
if (otgctl.b.sesreq)
|
||
|
|
{
|
||
|
|
return; /* SRP in progress */
|
||
|
|
}
|
||
|
|
otgctl.b.sesreq = 1;
|
||
|
|
USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_InitiateHNP
|
||
|
|
* Initiate HNP
|
||
|
|
* @param None
|
||
|
|
* @retval : None
|
||
|
|
*/
|
||
|
|
void USB_OTG_InitiateHNP(USB_OTG_CORE_HANDLE *pdev , uint8_t state, uint8_t mode)
|
||
|
|
{
|
||
|
|
USB_OTG_GOTGCTL_TypeDef otgctl;
|
||
|
|
USB_OTG_HPRT0_TypeDef hprt0;
|
||
|
|
|
||
|
|
otgctl.d32 = 0;
|
||
|
|
hprt0.d32 = 0;
|
||
|
|
|
||
|
|
otgctl.d32 = USB_OTG_READ_REG32( &pdev->regs.GREGS->GOTGCTL );
|
||
|
|
if (mode)
|
||
|
|
{ /* Device mode */
|
||
|
|
if (state)
|
||
|
|
{
|
||
|
|
|
||
|
|
otgctl.b.devhnpen = 1; /* B-Dev has been enabled to perform HNP */
|
||
|
|
otgctl.b.hnpreq = 1; /* Initiate an HNP req. to the connected USB host*/
|
||
|
|
USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{ /* Host mode */
|
||
|
|
if (state)
|
||
|
|
{
|
||
|
|
otgctl.b.hstsethnpen = 1; /* A-Dev has enabled B-device for HNP */
|
||
|
|
USB_OTG_WRITE_REG32(&pdev->regs.GREGS->GOTGCTL, otgctl.d32);
|
||
|
|
/* Suspend the bus so that B-dev will disconnect indicating the initial condition for HNP to DWC_Core */
|
||
|
|
hprt0.d32 = USB_OTG_ReadHPRT0(pdev);
|
||
|
|
hprt0.b.prtsusp = 1; /* The core clear this bit when disconnect interrupt generated (GINTSTS.DisconnInt = '1') */
|
||
|
|
USB_OTG_WRITE_REG32(pdev->regs.HPRT0, hprt0.d32);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief USB_OTG_GetCurrentState
|
||
|
|
* Return current OTG State
|
||
|
|
* @param None
|
||
|
|
* @retval : None
|
||
|
|
*/
|
||
|
|
uint32_t USB_OTG_GetCurrentState (USB_OTG_CORE_HANDLE *pdev)
|
||
|
|
{
|
||
|
|
return pdev->otg.OTG_State;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|