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58 lines
2.0 KiB
58 lines
2.0 KiB
/*
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* Copyright (C) 2014 Andrew Duggan
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* Copyright (C) 2014 Synaptics Inc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "rmifunction.h"
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#define RMI_FUNCTION_QUERY_OFFSET 0
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#define RMI_FUNCTION_COMMAND_OFFSET 1
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#define RMI_FUNCTION_CONTROL_OFFSET 2
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#define RMI_FUNCTION_DATA_OFFSET 3
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#define RMI_FUNCTION_INTERRUPT_SOURCES_OFFSET 4
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#define RMI_FUNCTION_NUMBER 5
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#define RMI_FUNCTION_VERSION_MASK 0x60
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#define RMI_FUNCTION_INTERRUPT_SOURCES_MASK 0x7
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RMIFunction::RMIFunction(const unsigned char * pdtEntry, unsigned short pageBase, unsigned int interruptCount)
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{
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unsigned char ii;
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unsigned char interruptOffset;
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if (pdtEntry) {
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m_queryBase = pdtEntry[RMI_FUNCTION_QUERY_OFFSET] + pageBase;
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m_commandBase = pdtEntry[RMI_FUNCTION_COMMAND_OFFSET] + pageBase;
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m_controlBase = pdtEntry[RMI_FUNCTION_CONTROL_OFFSET] + pageBase;
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m_dataBase = pdtEntry[RMI_FUNCTION_DATA_OFFSET] + pageBase;
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m_interruptSourceCount = pdtEntry[RMI_FUNCTION_INTERRUPT_SOURCES_OFFSET]
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& RMI_FUNCTION_INTERRUPT_SOURCES_MASK;
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m_functionNumber = pdtEntry[RMI_FUNCTION_NUMBER];
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m_functionVersion = (pdtEntry[RMI_FUNCTION_INTERRUPT_SOURCES_OFFSET]
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& RMI_FUNCTION_VERSION_MASK) >> 5;
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if (m_interruptSourceCount > 0)
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{
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m_interruptRegNum = (interruptCount + 8) / 8 - 1;
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/* Set an enable bit for each data source */
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interruptOffset = interruptCount % 8;
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m_interruptMask = 0;
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for (ii = interruptOffset;
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ii < (m_interruptSourceCount + interruptOffset);
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ii++)
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m_interruptMask |= 1 << ii;
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}
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}
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} |