Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
pmg-app-common/cy_app_swap.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
248 lines (215 sloc)
8.02 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| /***************************************************************************//** | |
| * \file cy_app_swap.c | |
| * \version 1.0 | |
| * | |
| * \brief | |
| * Implements the functions for handling of USB Power Delivery | |
| * role swap requests. | |
| * | |
| ******************************************************************************** | |
| * \copyright | |
| * Copyright 2024, Cypress Semiconductor Corporation (an Infineon company) | |
| * or an affiliate of Cypress Semiconductor Corporation. All rights reserved. | |
| * You may use this file only in accordance with the license, terms, conditions, | |
| * disclaimers, and limitations in the end user license agreement accompanying | |
| * the software package with which this file was provided. | |
| *******************************************************************************/ | |
| #include "cy_app_config.h" | |
| #include "cy_app_swap.h" | |
| #include "cy_app.h" | |
| #if (DFP_ALT_MODE_SUPP || UFP_ALT_MODE_SUPP) | |
| #include "cy_pdaltmode_mngr.h" | |
| #endif /* (DFP_ALT_MODE_SUPP || UFP_ALT_MODE_SUPP) */ | |
| #define APP_PD_SWAP_RESP_ACCEPT (0u) | |
| #define APP_PD_SWAP_RESP_REJECT (1u) | |
| #define APP_PD_SWAP_RESP_WAIT (2u) | |
| #define APP_PD_SWAP_RESP_NOT_SUPP (3u) | |
| #define GET_DR_SWAP_RESP(resp) ((resp) & 0x3u) | |
| /**< Macro to extract the default DR_SWAP command response from the swap_response field | |
| in the configuration table. */ | |
| #define GET_PR_SWAP_RESP(resp) (((resp) & 0xCu) >> 2u) | |
| /**< Macro to extract the default PR_SWAP command response from the swap_response field in the configuration table. */ | |
| #define GET_VCONN_SWAP_RESP(resp) (((resp) & 0x30u) >> 4u) | |
| /**< Macro to extract the default VCONN_SWAP command response from the swap_response field | |
| in the configuration table. */ | |
| #if (CY_APP_ROLE_PREFERENCE_ENABLE) | |
| #if (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) | |
| /* Variable storing current preference for power role. */ | |
| extern volatile uint8_t glAppPrefPowerRole[NO_OF_TYPEC_PORTS]; | |
| #endif /* (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) */ | |
| /* Variable storing current preference for data role */ | |
| extern volatile uint8_t glAppPrefDataRole[NO_OF_TYPEC_PORTS]; | |
| #endif /* (CY_APP_ROLE_PREFERENCE_ENABLE) */ | |
| static cy_en_pdstack_app_req_status_t get_response(cy_stc_pdstack_context_t * context, uint8_t raw_resp) | |
| { | |
| #if CY_PD_REV3_ENABLE | |
| cy_stc_pd_dpm_config_t* dpm = &(context->dpmConfig); | |
| #endif /* CCG_PD_REV3_ENABLE */ | |
| cy_en_pdstack_app_req_status_t retVal; | |
| switch(raw_resp) | |
| { | |
| case APP_RESP_ACCEPT: | |
| retVal = CY_PDSTACK_REQ_ACCEPT; | |
| break; | |
| case APP_RESP_WAIT: | |
| retVal = CY_PDSTACK_REQ_WAIT; | |
| break; | |
| #if CY_PD_REV3_ENABLE | |
| case APP_RESP_NOT_SUPPORTED: | |
| if(dpm->specRevSopLive <= CY_PD_REV2) | |
| { | |
| retVal = CY_PDSTACK_REQ_REJECT; | |
| } | |
| else | |
| { | |
| retVal = CY_PDSTACK_REQ_NOT_SUPPORTED; | |
| } | |
| break; | |
| #endif /* CCG_PD_REV3_ENABLE */ | |
| default: | |
| retVal = CY_PDSTACK_REQ_REJECT; | |
| break; | |
| } | |
| return retVal; | |
| } | |
| void Cy_App_Swap_EvalDrSwap (cy_stc_pdstack_context_t * context, cy_pdstack_app_resp_cbk_t app_resp_handler) | |
| { | |
| cy_en_pdstack_app_req_status_t result = CY_PDSTACK_REQ_REJECT; | |
| #if (DFP_ALT_MODE_SUPP || UFP_ALT_MODE_SUPP) | |
| cy_stc_pdaltmode_context_t * pdAltModeContext = context->ptrAltModeContext; | |
| if (pdAltModeContext->altModeAppStatus->altModeEntered == true) | |
| { | |
| result = CY_PDSTACK_REQ_SEND_HARD_RESET; | |
| } | |
| else | |
| #endif /* (DFP_ALT_MODE_SUPP || UFP_ALT_MODE_SUPP) */ | |
| { | |
| #if (CY_APP_ROLE_PREFERENCE_ENABLE) | |
| /* DR_SWAP from preferred role is not accepted */ | |
| if (context->dpmConfig.curPortType != glAppPrefDataRole[context->port]) | |
| #endif /* (CY_APP_ROLE_PREFERENCE_ENABLE) */ | |
| { | |
| result = get_response(context, GET_DR_SWAP_RESP(context->dpmStat.swapResponse)); | |
| } | |
| } | |
| Cy_App_GetRespBuffer(context->port)->reqStatus = result; | |
| app_resp_handler(context, Cy_App_GetRespBuffer(context->port)); | |
| } | |
| void Cy_App_Swap_EvalPrSwap (cy_stc_pdstack_context_t * context, cy_pdstack_app_resp_cbk_t app_resp_handler) | |
| { | |
| cy_en_pdstack_app_req_status_t result = CY_PDSTACK_REQ_REJECT; | |
| #if ((!CY_PD_SINK_ONLY) && (!CY_PD_SOURCE_ONLY)) | |
| const cy_stc_pdstack_dpm_status_t* dpm = &context->dpmStat; | |
| uint8_t pdo_mask; | |
| if(context->dpmConfig.curPortRole == CY_PD_PRT_ROLE_SOURCE) | |
| { | |
| #if CY_USE_CONFIG_TABLE | |
| pdo_mask = dpm->srcPdoMask; | |
| #else | |
| pdo_mask = dpm->srcPdoFlags[0]; | |
| #endif /* CY_USE_CONFIG_TABLE */ | |
| } | |
| else | |
| { | |
| #if CY_USE_CONFIG_TABLE | |
| pdo_mask = dpm->snkPdoMask; | |
| #else | |
| pdo_mask = dpm->snkPdoFlags[0]; | |
| #endif /* CY_USE_CONFIG_TABLE */ | |
| } | |
| /* | |
| * Default response is NOT_SUPPORTED instead of REJECT if the current mode | |
| * is PD REV3 and port role is source/sink only. | |
| */ | |
| #if CY_PD_REV3_ENABLE | |
| if ( | |
| (context->dpmConfig.specRevSopLive >= CY_PD_REV3) && | |
| (dpm->portRole != CY_PD_PRT_DUAL) | |
| ) | |
| { | |
| result = CY_PDSTACK_REQ_NOT_SUPPORTED; | |
| } | |
| #endif /* CY_PD_REV3_ENABLE */ | |
| #if (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) | |
| /* Do not allow PR_SWAP to a non-preferred role */ | |
| if (glAppPrefPowerRole[context->port] != context->dpmConfig.curPortRole) | |
| #endif /* (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) */ | |
| { | |
| if ( | |
| (dpm->deadBat == false) && (dpm->portRole == CY_PD_PRT_DUAL) && | |
| ( | |
| ((pdo_mask & (0x1 << CY_PD_EXTERNALLY_POWERED_BIT_POS)) == 0) || | |
| (context->dpmConfig.curPortRole == CY_PD_PRT_ROLE_SINK) | |
| ) | |
| ) | |
| { | |
| result = get_response(context, GET_PR_SWAP_RESP(context->dpmStat.swapResponse)); | |
| } | |
| } | |
| #if (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) | |
| else | |
| { | |
| if(dpm->portRole == CY_PD_PRT_DUAL) | |
| { | |
| result = CY_PDSTACK_REQ_REJECT; | |
| } | |
| else | |
| { | |
| result = get_response(context, APP_RESP_NOT_SUPPORTED); | |
| } | |
| } | |
| #endif /* (CY_APP_POWER_ROLE_PREFERENCE_ENABLE) */ | |
| #else | |
| if (context->dpmConfig.specRevSopLive >= CY_PD_REV3) | |
| { | |
| result = CY_PDSTACK_REQ_NOT_SUPPORTED; | |
| } | |
| #endif /* ((!CY_PD_SINK_ONLY) && (!CY_PD_SOURCE_ONLY)) */ | |
| Cy_App_GetRespBuffer(context->port)->reqStatus = result; | |
| app_resp_handler(context, Cy_App_GetRespBuffer(context->port)); | |
| } | |
| void Cy_App_Swap_EvalVconnSwap (cy_stc_pdstack_context_t * context, cy_pdstack_app_resp_cbk_t app_resp_handler) | |
| { | |
| cy_en_pdstack_app_req_status_t result = CY_PDSTACK_REQ_REJECT; | |
| #if !CY_PD_VCONN_DISABLE | |
| const cy_stc_pd_dpm_config_t* dpm = &(context->dpmConfig); | |
| if (dpm->vconnLogical == true) | |
| { | |
| result = CY_PDSTACK_REQ_ACCEPT; | |
| } | |
| else | |
| { | |
| result = get_response(context, GET_VCONN_SWAP_RESP(context->dpmStat.swapResponse)); | |
| if (result == CY_PDSTACK_REQ_ACCEPT) | |
| { | |
| #if CY_PD_DP_VCONN_SWAP_FEATURE | |
| if (!Cy_USBPD_V5V_IsSupplyOn (context->ptrUsbPdContext)) | |
| { | |
| result = CY_PDSTACK_REQ_WAIT; | |
| } | |
| #endif /* CY_PD_DP_VCONN_SWAP_FEATURE */ | |
| #if VCONN_OCP_ENABLE | |
| /* Do not allow VCONN_SWAP to become VConn source if fault is active. */ | |
| if ((Cy_App_GetPdAppStatus(context->port)->faultStatus & CY_APP_PORT_VCONN_FAULT_ACTIVE) != 0) | |
| { | |
| result = CY_PDSTACK_REQ_REJECT; | |
| } | |
| #endif /* VCONN_OCP_ENABLE */ | |
| } | |
| } | |
| #endif /* !CY_PD_VCONN_DISABLE */ | |
| Cy_App_GetRespBuffer(context->port)->reqStatus = result; | |
| app_resp_handler(context, Cy_App_GetRespBuffer(context->port)); | |
| } | |
| #if ((!CY_PD_SOURCE_ONLY) && (!CY_PD_SINK_ONLY)) | |
| #if CY_PD_REV3_ENABLE | |
| void Cy_App_Swap_EvalFrSwap (cy_stc_pdstack_context_t* context, cy_pdstack_app_resp_cbk_t app_resp_handler) | |
| { | |
| /* Accept FRS support is enabled/disabled by separate bit in configuration table. */ | |
| cy_en_pdstack_app_req_status_t result = CY_PDSTACK_REQ_ACCEPT; | |
| Cy_App_GetRespBuffer(context->port)->reqStatus = result; | |
| app_resp_handler(context, Cy_App_GetRespBuffer(context->port)); | |
| } | |
| #endif /* CY_PD_REV3_ENABLE */ | |
| #endif /* ((!CY_PD_SOURCE_ONLY) && (!CY_PD_SINK_ONLY)) */ | |
| /* [] END OF FILE */ | |