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author | Jack Humbert <jack.humb@gmail.com> | 2017-07-07 15:33:29 -0400 |
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committer | GitHub <noreply@github.com> | 2017-07-07 15:33:29 -0400 |
commit | 9de443cbf10ac41bc15762c9c83f138f51dd3b9a (patch) | |
tree | d8ddcb428e0b7d9773a1e52c42b60bdca2658beb /lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c | |
parent | 88b3d051b21cb1ddacc6353c5d59b19f03f3a242 (diff) | |
parent | 1c26468ad5a0701e244c99cbcbc547c93b75d515 (diff) | |
download | firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.gz firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.tar.bz2 firmware-9de443cbf10ac41bc15762c9c83f138f51dd3b9a.zip |
Merge pull request #1471 from qmk/lufa_lib
Update LUFA and move it to /lib/lufa
Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c')
-rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c b/lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c new file mode 100644 index 000000000..d540bcfb4 --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Core/ConfigDescriptors.c @@ -0,0 +1,146 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +#define __INCLUDE_FROM_USB_DRIVER +#include "ConfigDescriptors.h" + +#if defined(USB_CAN_BE_HOST) +uint8_t USB_Host_GetDeviceConfigDescriptor(const uint8_t ConfigNumber, + uint16_t* const ConfigSizePtr, + void* const BufferPtr, + const uint16_t BufferSize) +{ + uint8_t ErrorCode; + uint8_t ConfigHeader[sizeof(USB_Descriptor_Configuration_Header_t)]; + + USB_ControlRequest = (USB_Request_Header_t) + { + .bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_DEVICE), + .bRequest = REQ_GetDescriptor, + .wValue = ((DTYPE_Configuration << 8) | (ConfigNumber - 1)), + .wIndex = 0, + .wLength = sizeof(USB_Descriptor_Configuration_Header_t), + }; + + Pipe_SelectPipe(PIPE_CONTROLPIPE); + + if ((ErrorCode = USB_Host_SendControlRequest(ConfigHeader)) != HOST_SENDCONTROL_Successful) + return ErrorCode; + + *ConfigSizePtr = le16_to_cpu(DESCRIPTOR_PCAST(ConfigHeader, USB_Descriptor_Configuration_Header_t)->TotalConfigurationSize); + + if (*ConfigSizePtr > BufferSize) + return HOST_GETCONFIG_BuffOverflow; + + USB_ControlRequest.wLength = *ConfigSizePtr; + + if ((ErrorCode = USB_Host_SendControlRequest(BufferPtr)) != HOST_SENDCONTROL_Successful) + return ErrorCode; + + if (DESCRIPTOR_TYPE(BufferPtr) != DTYPE_Configuration) + return HOST_GETCONFIG_InvalidData; + + return HOST_GETCONFIG_Successful; +} +#endif + +void USB_GetNextDescriptorOfType(uint16_t* const BytesRem, + void** const CurrConfigLoc, + const uint8_t Type) +{ + while (*BytesRem) + { + USB_GetNextDescriptor(BytesRem, CurrConfigLoc); + + if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type) + return; + } +} + +void USB_GetNextDescriptorOfTypeBefore(uint16_t* const BytesRem, + void** const CurrConfigLoc, + const uint8_t Type, + const uint8_t BeforeType) +{ + while (*BytesRem) + { + USB_GetNextDescriptor(BytesRem, CurrConfigLoc); + + if (DESCRIPTOR_TYPE(*CurrConfigLoc) == Type) + { + return; + } + else if (DESCRIPTOR_TYPE(*CurrConfigLoc) == BeforeType) + { + *BytesRem = 0; + return; + } + } +} + +void USB_GetNextDescriptorOfTypeAfter(uint16_t* const BytesRem, + void** const CurrConfigLoc, + const uint8_t Type, + const uint8_t AfterType) +{ + USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, AfterType); + + if (*BytesRem) + USB_GetNextDescriptorOfType(BytesRem, CurrConfigLoc, Type); +} + +uint8_t USB_GetNextDescriptorComp(uint16_t* const BytesRem, + void** const CurrConfigLoc, + ConfigComparatorPtr_t const ComparatorRoutine) +{ + uint8_t ErrorCode; + + while (*BytesRem) + { + uint8_t* PrevDescLoc = *CurrConfigLoc; + uint16_t PrevBytesRem = *BytesRem; + + USB_GetNextDescriptor(BytesRem, CurrConfigLoc); + + if ((ErrorCode = ComparatorRoutine(*CurrConfigLoc)) != DESCRIPTOR_SEARCH_NotFound) + { + if (ErrorCode == DESCRIPTOR_SEARCH_Fail) + { + *CurrConfigLoc = PrevDescLoc; + *BytesRem = PrevBytesRem; + } + + return ErrorCode; + } + } + + return DESCRIPTOR_SEARCH_COMP_EndOfDescriptor; +} + |