kbdpower.c

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/*
 * File Name  : kbdpower.c
 *
 * Description: Keyboard power mode changer
 */

/*
 * This file is part of kbdupgrade.
 *
 * kbdupgrade 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 2 of the License, or
 * (at your option) any later version.
 *
 * kbdupgrade 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 this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * Copyright (C) 2008 iRex Technologies B.V.
 * All rights reserved.
 */

//----------------------------------------------------------------------------
// Include Files
//----------------------------------------------------------------------------

// system include files, between < >
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include "proto.h"


//----------------------------------------------------------------------------
// Type Declarations
//----------------------------------------------------------------------------


//----------------------------------------------------------------------------
// Global Constants
//----------------------------------------------------------------------------

#define ION_SERIO_FLAGS CS8
#define ION_SERIO_SPEED B115200

#define ION_POWER_MODES 7

char *modes[ION_POWER_MODES] = {
    "reboot",
    "on",
    "idle",
    "standby",
    "hibernate",
    "off",
    "warmreboot",
};


//----------------------------------------------------------------------------
// Static Variables
//----------------------------------------------------------------------------


//============================================================================
// Local Function Definitions
//============================================================================

static void usage();
static void parse_args(int argc, char **argv);


//============================================================================
// Functions Implementation
//============================================================================

int main(int argc, char **argv)
{
    uint8_t rcmd, rlen,i, len;
    uint8_t data[16], rdata[16];
    int powermode, delay, param;

    param = -1;
    len = 2;
    // check arguments
    parse_args(argc, argv);
    if ((argc-optind)<3)
    {
        usage();
    }
    // open device
    port_open(argv[optind], ION_SERIO_FLAGS, ION_SERIO_SPEED);
    powermode = 1;
    delay = atoi(argv[optind+2]);
    if ((argc-optind)==4)
    {
        param = atoi(argv[optind+3]);
        len = 3;
    }
    // find mode number
    for (i=0;i<ION_POWER_MODES;i++)
    {
        if (strcmp(modes[i], argv[optind+1])==0)
        {
           break;
        }
        powermode <<= 1;
    }
    if (i==ION_POWER_MODES)
    {
        fatal("Power mode '%s' not understood", argv[optind+1]);
    }
    // setup and send request
    data[0] = powermode;
    data[1] = delay;
    data[2] = param;
    //printf("sending command [%d]: %d %d %d\n", len, powermode, delay, param);
    printf("Switching to power mode '%s' (%d)\n", modes[i], powermode);
    i = 0;
    while (i<5)
    {
        if (!ionkbd_send_request(
                    IONKBD_REQ_SET_POWER, len, 
                    data, &rcmd, &rlen, rdata))
        {
            if (rcmd==IONKBD_RESP_STATUS)
            {
                printf("Mode change successful\n");
                return 0;
            }
            else if (rcmd>=0x80)
            {
                printf("Ignoring update packet: 0x%02X\n", rcmd);
            }
            else
            {
                printf("Unexpected response: 0x%02X\n", rcmd);
                i++;
            }
        }
        else
        {
            i++;
        }
    }
    printf("Mode change failed\n");

    return 1;
}


static void usage()
{
    int i;
    printf("kbdpower - \n");
    printf(" usage: kbdpower <options> <serial port> <power mode> <delay>\n");
    printf(" options:\n");
    printf("  -h     This text\n");
    printf(" power modes:\n");
    for (i=0;i<ION_POWER_MODES;i++)
        printf("  %s\n", modes[i]);
    exit(1);
}


static void parse_args(int argc, char **argv)
{
    int c;

    while (( c = getopt(argc, argv, "h")) != -1)
    {
        switch (c)
        {
   case 'h':
   default:
       usage();
       break;
        }
    }
}