| /* Copyright (c) 2011-2013, 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 <mach/msm_bus_board.h> |
| #include <mach/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); |