arch/arm/mach-tegra/flowctrl.h

   1 /*
   2  * arch/arm/mach-tegra/flowctrl.h
   3  *
   4  * functions and macros to control the flowcontroller
   5  *
   6  * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved.
   7  *
   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.
  11  *
  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
  15  * more details.
  16  *
  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/>.
  19  */
  20
  21 #ifndef __MACH_TEGRA_FLOWCTRL_H
  22 #define __MACH_TEGRA_FLOWCTRL_H
  23
  24 #define FLOW_CTRL_HALT_CPU0_EVENTS      0x0
  25 #define FLOW_CTRL_WAITEVENT             (2 << 29)
  26 #define FLOW_CTRL_WAIT_FOR_INTERRUPT    (4 << 29)
  27 #define FLOW_CTRL_JTAG_RESUME           (1 << 28)
  28 #define FLOW_CTRL_HALT_CPU_IRQ          (1 << 10)
  29 #define FLOW_CTRL_HALT_CPU_FIQ          (1 << 8)
  30 #define FLOW_CTRL_CPU0_CSR              0x8
  31 #define FLOW_CTRL_CSR_INTR_FLAG         (1 << 15)
  32 #define FLOW_CTRL_CSR_EVENT_FLAG        (1 << 14)
  33 #define FLOW_CTRL_CSR_ENABLE            (1 << 0)
  34 #define FLOW_CTRL_HALT_CPU1_EVENTS      0x14
  35 #define FLOW_CTRL_CPU1_CSR              0x18
  36
  37 #define TEGRA20_FLOW_CTRL_CSR_WFE_CPU0          (1 << 4)
  38 #define TEGRA20_FLOW_CTRL_CSR_WFE_BITMAP        (3 << 4)
  39 #define TEGRA20_FLOW_CTRL_CSR_WFI_BITMAP        0
  40
  41 #define TEGRA30_FLOW_CTRL_CSR_WFI_CPU0          (1 << 8)
  42 #define TEGRA30_FLOW_CTRL_CSR_WFE_BITMAP        (0xF << 4)
  43 #define TEGRA30_FLOW_CTRL_CSR_WFI_BITMAP        (0xF << 8)
  44
  45 #ifndef __ASSEMBLY__
  46 u32 flowctrl_read_cpu_csr(unsigned int cpuid);
  47 void flowctrl_write_cpu_csr(unsigned int cpuid, u32 value);
  48 void flowctrl_write_cpu_halt(unsigned int cpuid, u32 value);
  49
  50 void flowctrl_cpu_suspend_enter(unsigned int cpuid);
  51 void flowctrl_cpu_suspend_exit(unsigned int cpuid);
  52 #endif
  53
  54 #endif