79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#define pr_fmt(fmt) "AXI: %s(): " fmt, __func__
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/mutex.h>
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#include <linux/radix-tree.h>
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#include <linux/clk.h>
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#include <mach/msm_bus_board.h>
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#include <mach/msm_bus.h>
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#include "msm_bus_core.h"
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static DEFINE_MUTEX(msm_bus_config_lock);
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/**
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* msm_bus_axi_porthalt() - Halt the given axi master port
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* @master_port: AXI Master port to be halted
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*/
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int msm_bus_axi_porthalt(int master_port)
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{
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int ret = 0;
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int priv_id;
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struct msm_bus_fabric_device *fabdev;
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priv_id = msm_bus_board_get_iid(master_port);
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MSM_BUS_DBG("master_port: %d iid: %d fabid%d\n",
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master_port, priv_id, GET_FABID(priv_id));
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fabdev = msm_bus_get_fabric_device(GET_FABID(priv_id));
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if (IS_ERR_OR_NULL(fabdev)) {
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MSM_BUS_ERR("Fabric device not found for mport: %d\n",
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master_port);
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return -ENODEV;
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}
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mutex_lock(&msm_bus_config_lock);
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ret = fabdev->algo->port_halt(fabdev, priv_id);
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mutex_unlock(&msm_bus_config_lock);
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return ret;
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}
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EXPORT_SYMBOL(msm_bus_axi_porthalt);
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/**
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* msm_bus_axi_portunhalt() - Unhalt the given axi master port
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* @master_port: AXI Master port to be unhalted
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*/
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int msm_bus_axi_portunhalt(int master_port)
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{
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int ret = 0;
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int priv_id;
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struct msm_bus_fabric_device *fabdev;
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priv_id = msm_bus_board_get_iid(master_port);
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MSM_BUS_DBG("master_port: %d iid: %d fabid: %d\n",
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master_port, priv_id, GET_FABID(priv_id));
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fabdev = msm_bus_get_fabric_device(GET_FABID(priv_id));
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if (IS_ERR_OR_NULL(fabdev)) {
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MSM_BUS_ERR("Fabric device not found for mport: %d\n",
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master_port);
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return -ENODEV;
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}
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mutex_lock(&msm_bus_config_lock);
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ret = fabdev->algo->port_unhalt(fabdev, priv_id);
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mutex_unlock(&msm_bus_config_lock);
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return ret;
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}
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EXPORT_SYMBOL(msm_bus_axi_portunhalt);
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