diff options
Diffstat (limited to 'arch/arm/mach-tegra/sleep-t30.S')
-rw-r--r-- | arch/arm/mach-tegra/sleep-t30.S | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/arch/arm/mach-tegra/sleep-t30.S b/arch/arm/mach-tegra/sleep-t30.S deleted file mode 100644 index 777d9cee8b90..000000000000 --- a/arch/arm/mach-tegra/sleep-t30.S +++ /dev/null @@ -1,107 +0,0 @@ -/* - * Copyright (c) 2012, NVIDIA Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <linux/linkage.h> - -#include <asm/assembler.h> - -#include <mach/iomap.h> - -#include "sleep.h" -#include "flowctrl.h" - -#define TEGRA30_POWER_HOTPLUG_SHUTDOWN (1 << 27) /* Hotplug shutdown */ - -#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_PM_SLEEP) -/* - * tegra30_hotplug_shutdown(void) - * - * Powergates the current CPU. - * Should never return. - */ -ENTRY(tegra30_hotplug_shutdown) - /* Turn off SMP coherency */ - exit_smp r4, r5 - - /* Powergate this CPU */ - mov r0, #TEGRA30_POWER_HOTPLUG_SHUTDOWN - bl tegra30_cpu_shutdown - mov pc, lr @ should never get here -ENDPROC(tegra30_hotplug_shutdown) - -/* - * tegra30_cpu_shutdown(unsigned long flags) - * - * Puts the current CPU in wait-for-event mode on the flow controller - * and powergates it -- flags (in R0) indicate the request type. - * Must never be called for CPU 0. - * - * corrupts r0-r4, r12 - */ -ENTRY(tegra30_cpu_shutdown) - cpu_id r3 - cmp r3, #0 - moveq pc, lr @ Must never be called for CPU 0 - - ldr r12, =TEGRA_FLOW_CTRL_VIRT - cpu_to_csr_reg r1, r3 - add r1, r1, r12 @ virtual CSR address for this CPU - cpu_to_halt_reg r2, r3 - add r2, r2, r12 @ virtual HALT_EVENTS address for this CPU - - /* - * Clear this CPU's "event" and "interrupt" flags and power gate - * it when halting but not before it is in the "WFE" state. - */ - movw r12, \ - FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG | \ - FLOW_CTRL_CSR_ENABLE - mov r4, #(1 << 4) - orr r12, r12, r4, lsl r3 - str r12, [r1] - - /* Halt this CPU. */ - mov r3, #0x400 -delay_1: - subs r3, r3, #1 @ delay as a part of wfe war. - bge delay_1; - cpsid a @ disable imprecise aborts. - ldr r3, [r1] @ read CSR - str r3, [r1] @ clear CSR - tst r0, #TEGRA30_POWER_HOTPLUG_SHUTDOWN - movne r3, #FLOW_CTRL_WAITEVENT @ For hotplug - str r3, [r2] - ldr r0, [r2] - b wfe_war - -__cpu_reset_again: - dsb - .align 5 - wfe @ CPU should be power gated here -wfe_war: - b __cpu_reset_again - - /* - * 38 nop's, which fills reset of wfe cache line and - * 4 more cachelines with nop - */ - .rept 38 - nop - .endr - b . @ should never get here - -ENDPROC(tegra30_cpu_shutdown) -#endif |