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/**
* This file is part of libsamsung-ipc.
*
* Copyright (C) 2010-2011 Joerie de Gram <j.de.gram@gmail.com>
*
* libsamsung-ipc is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* libsamsung-ipc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libsamsung-ipc. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <termios.h>
#include <unistd.h>
#include <fcntl.h>
#include "ipc_private.h"
#include "h1_ipc.h"
static int fd = 0;
int h1_ipc_open()
{
struct termios termios;
fd = open(DPRAM_TTY, O_RDWR);
if(fd < 0) {
return 1;
}
tcgetattr(fd, &termios);
cfmakeraw(&termios);
tcsetattr(fd, TCSANOW, &termios);
return 0;
}
int h1_ipc_close()
{
if(fd) {
return close(fd);
}
return 1;
}
int h1_ipc_fd_get()
{
return fd;
}
void h1_ipc_power_on()
{
ioctl(fd, IOCTL_PHONE_ON);
}
void h1_ipc_power_off()
{
ioctl(fd, IOCTL_PHONE_OFF);
}
void h1_ipc_send(struct ipc_request *request)
{
struct hdlc_header *hdlc;
unsigned char *frame;
int frame_length;
/* Frame length: HDLC/IPC header + payload length + HDLC flags (2) */
frame_length = (sizeof(*hdlc) + request->length + 2);
frame = (unsigned char*)malloc(frame_length);
frame[0] = FRAME_START;
frame[frame_length-1] = FRAME_END;
/* Setup HDLC header */
hdlc = (struct hdlc_header*)(frame + 1);
hdlc->length = (sizeof(*hdlc) + request->length);
hdlc->unknown = 0;
/* IPC data */
hdlc->ipc.length = (sizeof(hdlc->ipc) + request->length);
hdlc->ipc.mseq = request->mseq;
hdlc->ipc.aseq = request->aseq;
hdlc->ipc.group = request->group;
hdlc->ipc.index = request->index;
hdlc->ipc.type = request->type;
hex_dump(frame, frame_length);
write(fd, frame, frame_length);
free(frame);
}
int h1_ipc_recv(struct ipc_response *response)
{
unsigned char buf[4];
unsigned char *data;
unsigned short *frame_length;
struct ipc_header *ipc;
int num_read;
int left;
num_read = read(fd, buf, sizeof(buf));
if(num_read == sizeof(buf) && *buf == FRAME_START) {
frame_length = (unsigned short*)&buf[1];
left = (*frame_length - 3 + 1);
data = (unsigned char*)malloc(left);
num_read = read(fd, data, left);
if(num_read == left && data[left-1] == FRAME_END) {
ipc = (struct ipc_header*)data;
response->mseq = ipc->mseq;
response->aseq = ipc->aseq;
response->command = IPC_COMMAND(ipc);
response->type = ipc->type;
response->data_length = (ipc->length - sizeof(*ipc));
response->data = (unsigned char*)malloc(response->data_length);
memcpy(response->data, (data + sizeof(*ipc)), response->data_length);
return 0;
}
}
return 1;
}
struct ipc_ops h1_ipc_ops = {
.open = h1_ipc_open,
.close = h1_ipc_close,
.power_on = h1_ipc_power_on,
.power_off = h1_ipc_power_off,
.send = h1_ipc_send,
.recv = h1_ipc_recv,
.fd_get = h1_ipc_fd_get,
};
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