/*------------------------------------------------------------------------------------------*\
 *   
 *   Copyright (C) 2013 AVM GmbH <fritzbox_info@avm.de>
 *
 *   This program 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.
 *
 *   This program 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, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
\*------------------------------------------------------------------------------------------*/

#include <linux/version.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/avm_power.h>
#include <linux/avm_event.h>
#include "avm_power.h"

#if defined(CONFIG_AVM_EVENT)
static void *powermanagment_remote_event_sink_handle;
/*--- #define DEBUG_AVM_POWER ---*/
#if defined(DEBUG_AVM_POWER)
#define DBG_TRC(args...)  printk(KERN_INFO args)
/*--------------------------------------------------------------------------------*\
\*--------------------------------------------------------------------------------*/
static void dump_data(const char *prefix, const unsigned char *data, unsigned int len) {
    printk(KERN_ERR"%s: data len=%d:", prefix, len);
    while(len--) {
        printk(KERN_CONT"%02x,",*data++);
    }
    printk(KERN_ERR"\n");
}
#else
#define DBG_TRC(args...)
#endif/*--- #if defined(DEBUG_AVM_POWER) ---*/
/*--------------------------------------------------------------------------------*\
\*--------------------------------------------------------------------------------*/
static void avm_event_powermanagment_remote_sink(void *private __attribute__((unused)), unsigned char *buf, unsigned int len __maybe_unused){
    struct _avm_event_powermanagment_remote *pevent = (struct _avm_event_powermanagment_remote *)buf;

#if defined(DEBUG_AVM_POWER)
    /*--- dump_data(__func__, buf, len); ---*/
	if(pevent->header.id != avm_event_id_powermanagment_remote) {
        printk(KERN_ERR"%s: incompatible event (id=%u)\n", __func__, pevent->header.id); 
        return;
    }
#endif/*--- #if defined(DEBUG_AVM_POWER) ---*/
    switch(pevent->remote_action) {
        case avm_event_powermanagment_ressourceinfo:
            DBG_TRC("[%s]PowerManagmentRessourceInfo(%s, %x)\n", __func__, pm_name_device(pevent->param.ressourceinfo.device), pevent->param.ressourceinfo.power_rate);
            PowerManagmentRessourceInfo(pevent->param.ressourceinfo.device, pevent->param.ressourceinfo.power_rate);
            break;
        case avm_event_powermanagment_activatepowermode:
            DBG_TRC("[%s]PowerManagmentActivatePowerMode(%s)\n", __func__, pevent->param.powermode);
            if(PowerManagmentActivatePowerMode(pevent->param.powermode)) {
                printk(KERN_ERR"%s: PowerManagmentActivatePowerMode(%s) failed\n", __func__, pevent->param.powermode); 
            }
            break;
        default:
            printk(KERN_ERR"%s: incompatible remote_action(%u)\n", __func__, pevent->remote_action); 
            break;
    }
}
#endif/*--- #if defined(CONFIG_AVM_EVENT) ---*/

/*--------------------------------------------------------------------------------*\
\*--------------------------------------------------------------------------------*/
int avm_power_remote_sink_init(void) {
#if defined(CONFIG_AVM_EVENT)
	struct _avm_event_id_mask id_mask;

    if(powermanagment_remote_event_sink_handle) {
        printk(KERN_ERR"%s already registered\n", __func__);
        return 0;
    }
    powermanagment_remote_event_sink_handle = avm_event_sink_register("powermanagment_remote_sink",
																	   avm_event_build_id_mask(&id_mask, 1, avm_event_id_powermanagment_remote),
                                                                       avm_event_powermanagment_remote_sink,
                                                                      NULL
                                                                     );
    if(powermanagment_remote_event_sink_handle == NULL) {
        printk(KERN_ERR"%s not registered\n", __func__);
        return -ENOMEM;
    }
#endif/*--- #if defined(CONFIG_AVM_EVENT) ---*/
#if defined(DEBUG_AVM_POWER)
    printk(KERN_ERR"%s registered\n", __func__);
#endif/*--- #if defined(DEBUG_AVM_POWER) ---*/
    return 0;
}

/*--------------------------------------------------------------------------------*\
\*--------------------------------------------------------------------------------*/
void avm_power_remote_sink_exit(void) {
#if defined(CONFIG_AVM_EVENT)
    if(powermanagment_remote_event_sink_handle == NULL) {
        printk(KERN_ERR"%s not registered\n", __func__);
        return;
    }
    avm_event_sink_release(powermanagment_remote_event_sink_handle);
    powermanagment_remote_event_sink_handle = NULL;
#endif/*--- #if defined(CONFIG_AVM_EVENT) ---*/
}