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/* Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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.
*/
#define pr_fmt(fmt) "AXI: %s(): " fmt, __func__
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
#include <linux/clk.h>
#include <linux/msm-bus-board.h>
#include <linux/msm-bus.h>
#include "msm_bus_core.h"
static DEFINE_MUTEX(msm_bus_config_lock);
/**
* msm_bus_axi_porthalt() - Halt the given axi master port
* @master_port: AXI Master port to be halted
*/
int msm_bus_axi_porthalt(int master_port)
{
int ret = 0;
int priv_id;
struct msm_bus_fabric_device *fabdev;
priv_id = msm_bus_board_get_iid(master_port);
MSM_BUS_DBG("master_port: %d iid: %d fabid%d\n",
master_port, priv_id, GET_FABID(priv_id));
fabdev = msm_bus_get_fabric_device(GET_FABID(priv_id));
if (IS_ERR_OR_NULL(fabdev)) {
MSM_BUS_ERR("Fabric device not found for mport: %d\n",
master_port);
return -ENODEV;
}
mutex_lock(&msm_bus_config_lock);
ret = fabdev->algo->port_halt(fabdev, priv_id);
mutex_unlock(&msm_bus_config_lock);
return ret;
}
EXPORT_SYMBOL(msm_bus_axi_porthalt);
/**
* msm_bus_axi_portunhalt() - Unhalt the given axi master port
* @master_port: AXI Master port to be unhalted
*/
int msm_bus_axi_portunhalt(int master_port)
{
int ret = 0;
int priv_id;
struct msm_bus_fabric_device *fabdev;
priv_id = msm_bus_board_get_iid(master_port);
MSM_BUS_DBG("master_port: %d iid: %d fabid: %d\n",
master_port, priv_id, GET_FABID(priv_id));
fabdev = msm_bus_get_fabric_device(GET_FABID(priv_id));
if (IS_ERR_OR_NULL(fabdev)) {
MSM_BUS_ERR("Fabric device not found for mport: %d\n",
master_port);
return -ENODEV;
}
mutex_lock(&msm_bus_config_lock);
ret = fabdev->algo->port_unhalt(fabdev, priv_id);
mutex_unlock(&msm_bus_config_lock);
return ret;
}
EXPORT_SYMBOL(msm_bus_axi_portunhalt);
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