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When the last CPU core in suspend, the CPU power rail can be turned off by setting flags to flow controller. Then the flow controller will inform PMC to turn off the CPU rail when the last CPU goes into suspend. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/*
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* arch/arm/mach-tegra/flowctrl.h
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*
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* functions and macros to control the flowcontroller
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*
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* Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* 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, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __MACH_TEGRA_FLOWCTRL_H
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#define __MACH_TEGRA_FLOWCTRL_H
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#define FLOW_CTRL_HALT_CPU0_EVENTS 0x0
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#define FLOW_CTRL_WAITEVENT (2 << 29)
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#define FLOW_CTRL_WAIT_FOR_INTERRUPT (4 << 29)
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#define FLOW_CTRL_JTAG_RESUME (1 << 28)
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#define FLOW_CTRL_SCLK_RESUME (1 << 27)
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#define FLOW_CTRL_HALT_CPU_IRQ (1 << 10)
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#define FLOW_CTRL_HALT_CPU_FIQ (1 << 8)
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#define FLOW_CTRL_HALT_LIC_IRQ (1 << 11)
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#define FLOW_CTRL_HALT_LIC_FIQ (1 << 10)
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#define FLOW_CTRL_HALT_GIC_IRQ (1 << 9)
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#define FLOW_CTRL_HALT_GIC_FIQ (1 << 8)
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#define FLOW_CTRL_CPU0_CSR 0x8
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#define FLOW_CTRL_CSR_INTR_FLAG (1 << 15)
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#define FLOW_CTRL_CSR_EVENT_FLAG (1 << 14)
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#define FLOW_CTRL_CSR_ENABLE_EXT_CRAIL (1 << 13)
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#define FLOW_CTRL_CSR_ENABLE_EXT_NCPU (1 << 12)
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#define FLOW_CTRL_CSR_ENABLE_EXT_MASK ( \
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FLOW_CTRL_CSR_ENABLE_EXT_NCPU | \
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FLOW_CTRL_CSR_ENABLE_EXT_CRAIL)
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#define FLOW_CTRL_CSR_ENABLE (1 << 0)
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#define FLOW_CTRL_HALT_CPU1_EVENTS 0x14
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#define FLOW_CTRL_CPU1_CSR 0x18
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#define TEGRA20_FLOW_CTRL_CSR_WFE_CPU0 (1 << 4)
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#define TEGRA20_FLOW_CTRL_CSR_WFE_BITMAP (3 << 4)
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#define TEGRA20_FLOW_CTRL_CSR_WFI_BITMAP 0
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#define TEGRA30_FLOW_CTRL_CSR_WFI_CPU0 (1 << 8)
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#define TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP (0xF << 4)
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#define TEGRA30_FLOW_CTRL_CSR_WFI_BITMAP (0xF << 8)
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#ifndef __ASSEMBLY__
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u32 flowctrl_read_cpu_csr(unsigned int cpuid);
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void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value);
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void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value);
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void flowctrl_cpu_suspend_enter(unsigned int cpuid);
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void flowctrl_cpu_suspend_exit(unsigned int cpuid);
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#endif
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#endif
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