2 * arch/arm/mach-tegra/flowctrl.c
4 * functions and macros to control the flowcontroller
6 * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms and conditions of the GNU General Public License,
10 * version 2, as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include <linux/init.h>
22 #include <linux/kernel.h>
25 #include <mach/iomap.h>
29 u8 flowctrl_offset_halt_cpu[] = {
30 FLOW_CTRL_HALT_CPU0_EVENTS,
31 FLOW_CTRL_HALT_CPU1_EVENTS,
32 FLOW_CTRL_HALT_CPU1_EVENTS + 8,
33 FLOW_CTRL_HALT_CPU1_EVENTS + 16,
36 u8 flowctrl_offset_cpu_csr[] = {
39 FLOW_CTRL_CPU1_CSR + 8,
40 FLOW_CTRL_CPU1_CSR + 16,
43 static void flowctrl_update(u8 offset, u32 value)
45 void __iomem *addr = IO_ADDRESS(TEGRA_FLOW_CTRL_BASE) + offset;
49 /* ensure the update has reached the flow controller */
54 void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value)
56 return flowctrl_update(flowctrl_offset_cpu_csr[cpuid], value);
59 void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value)
61 return flowctrl_update(flowctrl_offset_halt_cpu[cpuid], value);