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/*
* Copyright (C) 2014 Andrew Duggan
* Copyright (C) 2014 Synaptics Inc
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* 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.
*/
#ifndef _HIDDEVICE_H_
#define _HIDDEVICE_H_
#include <linux/hidraw.h>
#include <string>
#include "rmidevice.h"
class HIDDevice : public RMIDevice
{
public:
HIDDevice() : RMIDevice(), m_inputReport(NULL), m_outputReport(NULL), m_attnData(NULL),
m_readData(NULL),
m_inputReportSize(0),
m_outputReportSize(0),
m_featureReportSize(0),
m_deviceOpen(false)
{}
virtual int Open(const char * filename);
virtual int Read(unsigned short addr, unsigned char *buf,
unsigned short len);
virtual int Write(unsigned short addr, const unsigned char *buf,
unsigned short len);
virtual int SetMode(int mode);
virtual int WaitForAttention(struct timeval * timeout = NULL,
unsigned int source_mask = RMI_INTERUPT_SOURCES_ALL_MASK);
virtual int GetAttentionReport(struct timeval * timeout, unsigned int source_mask,
unsigned char *buf, unsigned int *len);
virtual void Close();
virtual void RebindDriver();
~HIDDevice() { Close(); }
virtual void PrintDeviceInfo();
private:
int m_fd;
struct hidraw_report_descriptor m_rptDesc;
struct hidraw_devinfo m_info;
unsigned char *m_inputReport;
unsigned char *m_outputReport;
unsigned char *m_attnData;
unsigned char *m_readData;
int m_dataBytesRead;
size_t m_inputReportSize;
size_t m_outputReportSize;
size_t m_featureReportSize;
bool m_deviceOpen;
enum mode_type {
HID_RMI4_MODE_MOUSE = 0,
HID_RMI4_MODE_ATTN_REPORTS = 1,
HID_RMI4_MODE_NO_PACKED_ATTN_REPORTS = 2,
};
int GetReport(int *reportId, struct timeval * timeout = NULL);
void PrintReport(const unsigned char *report);
void ParseReportSizes();
// static HID utility functions
static bool LookupHidDeviceName(int bus, int vendorId, int productId, std::string &deviceName);
static bool FindTransportDevice(int bus, std::string & hidDeviceName,
std::string & transportDeviceName, std::string & driverPath);
static bool FindHidRawFile(std::string & hidDeviceName, std::string & hidrawFile);
};
#endif /* _HIDDEVICE_H_ */
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