534 lines
15 KiB
C
534 lines
15 KiB
C
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/**
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******************************************************************************
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* @file tusb546.c
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* @author MCD Application Team
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* @brief This file provides a set of functions needed to manage the TUSB546
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* (USB Type-C DP ALT Mode Linear Redriver Crosspoint Switch).
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******************************************************************************
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* @attention
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*
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* <h2><center>© Copyright (c) 2017 STMicroelectronics.
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* All rights reserved.</center></h2>
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*
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* This software component is licensed by ST under BSD 3-Clause license,
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* the "License"; You may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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* opensource.org/licenses/BSD-3-Clause
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "tusb546.h"
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/** @addtogroup BSP
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* @{
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*/
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/** @addtogroup Components
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* @{
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*/
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/** @defgroup TUSB546
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* @brief This file provides a set of functions needed to drive the
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* TUSB546 USB Type-C DP ALT Mode Linear Redriver Crosspoint Switch.
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* @{
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*/
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/** @defgroup TUSB546_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup TUSB546_Private_Defines
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup TUSB546_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup TUSB546_Private_Variables
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* @{
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*/
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/* Type-C Crosspoint Switch Driver structure initialization */
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TYPECSWITCH_Drv_t tusb546_drv_CrossSwitch =
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{
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tusb546_CrossSwitch_Init,
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tusb546_CrossSwitch_DeInit,
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tusb546_CrossSwitch_PowerOn,
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tusb546_CrossSwitch_PowerOff,
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tusb546_CrossSwitch_SetMode,
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tusb546_CrossSwitch_IsSupportedMode
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};
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/* DisplayPort Linear Redriver driver structure initialization*/
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DPREDRIVER_Drv_t tusb546_drv_LinearRedriver =
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{
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tusb546_DPRedriver_Init,
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tusb546_DPRedriver_DeInit,
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tusb546_DPRedriver_PowerOn,
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tusb546_DPRedriver_PowerOff,
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tusb546_DPRedriver_SetEQGain,
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tusb546_DPRedriver_EnableChannel,
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tusb546_DPRedriver_DisableChannel
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};
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/* Supported USB Type-C pin assignments */
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static const uint32_t tusb546_SupportedModes =
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( 1 << USB_NORMAL |
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1 << USB_FLIPPED |
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1 << DFP_D_PIN_ASSIGNMENT_C_NORMAL |
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1 << DFP_D_PIN_ASSIGNMENT_C_FLIPPED |
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1 << DFP_D_PIN_ASSIGNMENT_D_NORMAL |
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1 << DFP_D_PIN_ASSIGNMENT_D_FLIPPED |
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1 << DFP_D_PIN_ASSIGNMENT_E_NORMAL |
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1 << DFP_D_PIN_ASSIGNMENT_E_FLIPPED |
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1 << DFP_D_PIN_ASSIGNMENT_F_NORMAL |
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1 << DFP_D_PIN_ASSIGNMENT_F_FLIPPED );
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static uint8_t tusb546_IsInitialized_CrossSwitch = 0;
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static uint8_t tusb546_IsInitialized_DPRedriver = 0;
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/**
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* @}
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*/
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/** @defgroup TUSB546_Private_FunctionPrototypes
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup TUSB546_Private_Functions
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* @{
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*/
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/**
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* @brief Initialize the TUSB546 and configure the needed hardware resources
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* (Type-C cross switch part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_CrossSwitch_Init(uint16_t Address)
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{
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uint32_t err_count = 0;
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tusb546_IsInitialized_CrossSwitch = 1;
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if (!tusb546_IsInitialized_DPRedriver)
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{
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/* Low level init */
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err_count += MUX_IO_Init();
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/* Restore TUSB546 registers reset values */
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err_count += MUX_IO_Write(Address, TUSB546_REG_CTRL, 0x01);
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err_count += MUX_IO_Write(Address, TUSB546_REG_DP_CTRL1, 0x00);
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err_count += MUX_IO_Write(Address, TUSB546_REG_DP_CTRL2, 0x00);
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err_count += MUX_IO_Write(Address, TUSB546_REG_DP_CTRL4, 0x00);
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err_count += MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL1, 0x00);
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err_count += MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL2, 0x00);
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err_count += MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL3, 0x00);
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}
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return err_count;
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}
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/**
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* @brief Release the hardware resources required to use the TUSB546
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* (Type-C cross switch part).
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* @param Address TUSB546 address on communication Bus.
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* @retval none
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*/
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void tusb546_CrossSwitch_DeInit(uint16_t Address)
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{
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tusb546_IsInitialized_CrossSwitch = 0;
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if ((!tusb546_IsInitialized_CrossSwitch) &&
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(!tusb546_IsInitialized_DPRedriver))
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{
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/* Restore TUSB546 registers reset values */
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MUX_IO_Write(Address, TUSB546_REG_CTRL, 0x01);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL1, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL2, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL4, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL1, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL2, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL3, 0x00);
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/* Low level de-init */
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MUX_IO_DeInit();
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}
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}
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/**
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* @brief Power on the TUSB546 (Type-C cross switch part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_CrossSwitch_PowerOn(uint16_t Address)
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{
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uint32_t err_count = 0;
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/* Enable USB3x port */
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err_count += MUX_IO_Write(Address, TUSB546_REG_CTRL, TUSB546_REG_CTRL_CTLSEL_0);
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return err_count;
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}
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/**
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* @brief Power down the TUSB546 (Type-C cross switch part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_CrossSwitch_PowerOff(uint16_t Address)
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{
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uint32_t err_count = 0;
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/* All RX and TX for USB3 and DisplayPort are disabled */
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err_count += MUX_IO_Write(Address, TUSB546_REG_CTRL, 0);
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return err_count;
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}
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/**
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* @brief Configure the TUSB546 according to the requested USB Type-C
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* connector pin assignment.
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* @param Address TUSB546 address on communication Bus.
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* @param Mode USB Type-C connector pin assignment
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* @retval 0: success, else error
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*/
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uint32_t tusb546_CrossSwitch_SetMode(uint16_t Address, TYPECSWITCH_Mode_t Mode)
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{
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uint32_t err_count = 0;
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uint8_t flipsel;
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uint8_t ctlsel;
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uint8_t ctlreg;
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switch(Mode)
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{
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case USB_NORMAL:
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flipsel = 0;
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ctlsel = TUSB546_REG_CTRL_CTLSEL_0;
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break;
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case USB_FLIPPED:
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flipsel = TUSB546_REG_CTRL_FLIPSEL;
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ctlsel = TUSB546_REG_CTRL_CTLSEL_0;
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break;
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case DFP_D_PIN_ASSIGNMENT_C_NORMAL:
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case DFP_D_PIN_ASSIGNMENT_E_NORMAL:
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flipsel = 0;
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ctlsel = TUSB546_REG_CTRL_CTLSEL_1;
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break;
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case DFP_D_PIN_ASSIGNMENT_C_FLIPPED:
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case DFP_D_PIN_ASSIGNMENT_E_FLIPPED:
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flipsel = TUSB546_REG_CTRL_FLIPSEL;
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ctlsel = TUSB546_REG_CTRL_CTLSEL_1;
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break;
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case DFP_D_PIN_ASSIGNMENT_D_NORMAL:
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case DFP_D_PIN_ASSIGNMENT_F_NORMAL:
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flipsel = 0;
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ctlsel = TUSB546_REG_CTRL_CTLSEL;
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break;
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case DFP_D_PIN_ASSIGNMENT_D_FLIPPED:
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case DFP_D_PIN_ASSIGNMENT_F_FLIPPED:
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flipsel = TUSB546_REG_CTRL_FLIPSEL;
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ctlsel = TUSB546_REG_CTRL_CTLSEL;
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break;
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default:
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flipsel = 0;
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ctlsel = 0;
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break;
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}
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/* Get actual device configuration */
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err_count += MUX_IO_Read(Address, TUSB546_REG_CTRL, &ctlreg);
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ctlreg = (ctlreg & ~(uint8_t)(TUSB546_REG_CTRL_FLIPSEL | TUSB546_REG_CTRL_CTLSEL)) | (flipsel | ctlsel);
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/* Update device configuration */
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err_count += MUX_IO_Write(Address, TUSB546_REG_CTRL, ctlreg);
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return err_count;
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}
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/**
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* @brief Indicate whether the requested USB Type-C connector pin assignment
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* is supported by the TUSB546.
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* @param Mode USB Type-C connector pin assignment
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* @retval 1: Mode supported, else Mode not supported
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*/
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uint32_t tusb546_CrossSwitch_IsSupportedMode(TYPECSWITCH_Mode_t Mode)
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{
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return (((1 << Mode) & tusb546_SupportedModes ) == 0) ? 0 : 1;
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}
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/**
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* @brief Initialize the TUSB546 and configure the needed hardware resources
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* (DisplayPort linear redriver part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_DPRedriver_Init(uint16_t Address)
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{
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uint32_t err_count = 0;
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tusb546_IsInitialized_DPRedriver = 1;
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if (!tusb546_IsInitialized_CrossSwitch)
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{
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/* Low level init */
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err_count += MUX_IO_Init();
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}
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return err_count;
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}
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/**
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* @brief Release the hardware resources required to use the TUSB546
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* (DisplayPort linear redriver part).
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* @param Address TUSB546 address on communication Bus.
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* @retval none
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*/
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void tusb546_DPRedriver_DeInit(uint16_t Address)
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{
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tusb546_IsInitialized_DPRedriver = 0;
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if ((!tusb546_IsInitialized_CrossSwitch) &&
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(!tusb546_IsInitialized_DPRedriver))
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{
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/* Restore TUSB546 registers reset values */
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MUX_IO_Write(Address, TUSB546_REG_CTRL, 0x01);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL1, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL2, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_DP_CTRL4, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL1, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL2, 0x00);
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MUX_IO_Write(Address, TUSB546_REG_USB3_CTRL3, 0x00);
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/* Low level de-init */
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MUX_IO_DeInit();
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}
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}
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/**
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* @brief Power on the TUSB546 (DisplayPort linear redriver part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_DPRedriver_PowerOn(uint16_t Address)
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{
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return 0;
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}
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/**
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* @brief Power down the TUSB546 (DisplayPort linear redriver part).
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* @param Address TUSB546 address on communication Bus.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_DPRedriver_PowerOff(uint16_t Address)
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{
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return 0;
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}
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/**
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* @brief Set the equalizer gain for a given channel.
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* @param Address TUSB546 address on communication Bus.
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* @param ChannelId Channel identifier.
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* This parameter can be take one of the following values:
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* CHANNEL_DP0
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* CHANNEL_DP1
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* CHANNEL_DP2
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* CHANNEL_DP3
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* CHANNEL_RX1
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* CHANNEL_RX2
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* CHANNEL_SSTX
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* @param EQGain Equalizer gain.
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* This parameter must be a value between 0x00 and 0x0F.
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* @retval 0: successful, else failed
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*/
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uint32_t tusb546_DPRedriver_SetEQGain(uint16_t Address,
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DPREDRIVER_ChannelId_t ChannelId,
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uint8_t EQGain)
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{
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uint32_t err_count = 0;
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uint8_t eqsel = 0;
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uint8_t reg_offset = 0;
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uint8_t ctlreg;
|
||
|
|
uint8_t mask = 0;
|
||
|
|
|
||
|
|
switch(ChannelId)
|
||
|
|
{
|
||
|
|
case CHANNEL_DP0:
|
||
|
|
reg_offset = TUSB546_REG_DP_CTRL1;
|
||
|
|
mask = TUSB546_REG_DP_CTRL1_DP0EQ_SEL_Msk;
|
||
|
|
eqsel = EQGain;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP1:
|
||
|
|
reg_offset = TUSB546_REG_DP_CTRL1;
|
||
|
|
mask = TUSB546_REG_DP_CTRL1_DP1EQ_SEL_Msk;
|
||
|
|
eqsel = (EQGain << TUSB546_REG_DP_CTRL1_DP1EQ_SEL_Pos);
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP2:
|
||
|
|
reg_offset = TUSB546_REG_DP_CTRL2;
|
||
|
|
mask = TUSB546_REG_DP_CTRL2_DP2EQ_SEL_Msk;
|
||
|
|
eqsel = EQGain;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP3:
|
||
|
|
reg_offset = TUSB546_REG_DP_CTRL2;
|
||
|
|
mask = TUSB546_REG_DP_CTRL2_DP3EQ_SEL_Msk;
|
||
|
|
eqsel = (EQGain << TUSB546_REG_DP_CTRL2_DP3EQ_SEL_Pos);
|
||
|
|
break;
|
||
|
|
case CHANNEL_RX1:
|
||
|
|
reg_offset = TUSB546_REG_USB3_CTRL1;
|
||
|
|
mask = TUSB546_REG_USB3_CTRL1_EQ1_SEL_Msk;
|
||
|
|
eqsel = EQGain;
|
||
|
|
break;
|
||
|
|
case CHANNEL_RX2:
|
||
|
|
reg_offset = TUSB546_REG_USB3_CTRL1;
|
||
|
|
mask = TUSB546_REG_USB3_CTRL1_EQ2_SEL_Msk;
|
||
|
|
eqsel = (EQGain << TUSB546_REG_USB3_CTRL1_EQ2_SEL_Pos);
|
||
|
|
break;
|
||
|
|
case CHANNEL_SSTX:
|
||
|
|
reg_offset = TUSB546_REG_USB3_CTRL2;
|
||
|
|
mask = TUSB546_USB3_CTRL2_SSEQ_SEL_Msk;
|
||
|
|
eqsel = EQGain;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (reg_offset != 0)
|
||
|
|
{
|
||
|
|
/* Set EQ_OVERRIDE to use EQ settings from registers instead of value sample from pins */
|
||
|
|
err_count += MUX_IO_Write(Address, TUSB546_REG_CTRL, TUSB546_REG_CTRL_EQ_OVERRIDE);
|
||
|
|
|
||
|
|
/* Get actual EQ configuration */
|
||
|
|
err_count += MUX_IO_Read(Address, reg_offset, &ctlreg);
|
||
|
|
ctlreg = (ctlreg & ~(mask)) | eqsel;
|
||
|
|
|
||
|
|
/* Update EQ configuration */
|
||
|
|
err_count += MUX_IO_Write(Address, reg_offset, ctlreg);
|
||
|
|
}
|
||
|
|
|
||
|
|
return err_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enable a DP channel.
|
||
|
|
* @param Address TUSB546 address on communication Bus.
|
||
|
|
* @param ChannelId Channel identifier.
|
||
|
|
* This parameter can be take one of the following values:
|
||
|
|
* CHANNEL_DP0
|
||
|
|
* CHANNEL_DP1
|
||
|
|
* CHANNEL_DP2
|
||
|
|
* CHANNEL_DP3
|
||
|
|
* @retval 0: successful, else failed
|
||
|
|
*/
|
||
|
|
uint32_t tusb546_DPRedriver_EnableChannel(uint16_t Address,
|
||
|
|
DPREDRIVER_ChannelId_t ChannelId)
|
||
|
|
{
|
||
|
|
uint32_t err_count = 0;
|
||
|
|
uint8_t ctlreg;
|
||
|
|
|
||
|
|
err_count += MUX_IO_Read(Address, TUSB546_REG_DP_CTRL4, &ctlreg);
|
||
|
|
|
||
|
|
switch(ChannelId)
|
||
|
|
{
|
||
|
|
case CHANNEL_DP0:
|
||
|
|
ctlreg &= ~TUSB546_REG_DP_CTRL4_DP0_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP1:
|
||
|
|
ctlreg &= ~TUSB546_REG_DP_CTRL4_DP1_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP2:
|
||
|
|
ctlreg &= ~TUSB546_REG_DP_CTRL4_DP2_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP3:
|
||
|
|
ctlreg &= ~TUSB546_REG_DP_CTRL4_DP3_DISABLE;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
/* Nothing to do */
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Enable the DP line */
|
||
|
|
err_count += MUX_IO_Write(Address, TUSB546_REG_DP_CTRL4, ctlreg);
|
||
|
|
|
||
|
|
return err_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disable a DP channel.
|
||
|
|
* @param Address TUSB546 address on communication Bus.
|
||
|
|
* @param ChannelId Channel identifier.
|
||
|
|
* This parameter can be take one of the following values:
|
||
|
|
* CHANNEL_DP0
|
||
|
|
* CHANNEL_DP1
|
||
|
|
* CHANNEL_DP2
|
||
|
|
* CHANNEL_DP3
|
||
|
|
* @retval 0: successful, else failed
|
||
|
|
*/
|
||
|
|
uint32_t tusb546_DPRedriver_DisableChannel(uint16_t Address,
|
||
|
|
DPREDRIVER_ChannelId_t ChannelId)
|
||
|
|
{
|
||
|
|
uint32_t err_count = 0;
|
||
|
|
uint8_t ctlreg;
|
||
|
|
|
||
|
|
err_count += MUX_IO_Read(Address, TUSB546_REG_DP_CTRL4, &ctlreg);
|
||
|
|
|
||
|
|
switch(ChannelId)
|
||
|
|
{
|
||
|
|
case CHANNEL_DP0:
|
||
|
|
ctlreg |= TUSB546_REG_DP_CTRL4_DP0_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP1:
|
||
|
|
ctlreg |= TUSB546_REG_DP_CTRL4_DP1_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP2:
|
||
|
|
ctlreg |= TUSB546_REG_DP_CTRL4_DP2_DISABLE;
|
||
|
|
break;
|
||
|
|
case CHANNEL_DP3:
|
||
|
|
ctlreg |= TUSB546_REG_DP_CTRL4_DP3_DISABLE;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
/* Nothing to do */
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Disable the DP line */
|
||
|
|
err_count += MUX_IO_Write(Address, TUSB546_REG_DP_CTRL4, ctlreg);
|
||
|
|
|
||
|
|
return err_count;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|