diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 12:05:15 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-12 12:05:15 -0800 |
commit | d027db132b395dabfac208e52a7e510e441bb9d2 (patch) | |
tree | 24b055b2385f9848e77e646ce475991d8675c3c4 /arch/arm/mach-tegra/sleep-tegra20.S | |
parent | d01e4afdbb65e030fd6f1f96c30a558e2eb0f279 (diff) | |
parent | 5faf7cbb848da827f6ea1458b5a1c26a44e7510a (diff) | |
download | kernel_replicant_linux-d027db132b395dabfac208e52a7e510e441bb9d2.tar.gz kernel_replicant_linux-d027db132b395dabfac208e52a7e510e441bb9d2.tar.bz2 kernel_replicant_linux-d027db132b395dabfac208e52a7e510e441bb9d2.zip |
Merge tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC updates from Olof Johansson:
"This contains the bulk of new SoC development for this merge window.
Two new platforms have been added, the sunxi platforms (Allwinner A1x
SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
series of ARMv7 platforms from them, where the hope is that we can
keep the platform code generic enough to have them all share one mach
directory. The new Broadcom platform is contributed by Christian
Daudt.
Highbank has grown support for Calxeda's next generation of hardware,
ECX-2000.
clps711x has seen a lot of cleanup from Alexander Shiyan, and he's
also taken on maintainership of the platform.
Beyond this there has been a bunch of work from a number of people on
converting more platforms to IRQ domains, pinctrl conversion, cleanup
and general feature enablement across most of the active platforms."
Fix up trivial conflicts as per Olof.
* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (174 commits)
mfd: vexpress-sysreg: Remove LEDs code
irqchip: irq-sunxi: Add terminating entry for sunxi_irq_dt_ids
clocksource: sunxi_timer: Add terminating entry for sunxi_timer_dt_ids
irq: versatile: delete dangling variable
ARM: sunxi: add missing include for mdelay()
ARM: EXYNOS: Avoid early use of of_machine_is_compatible()
ARM: dts: add node for PL330 MDMA1 controller for exynos4
ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412
ARM: EXYNOS: add UART3 to DEBUG_LL ports
ARM: S3C24XX: Add clkdev entry for camif-upll clock
ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
ARM: sunxi: Add missing sun4i.dtsi file
pinctrl: samsung: Do not initialise statics to 0
ARM i.MX6: remove gate_mask from pllv3
ARM i.MX6: Fix ethernet PLL clocks
ARM i.MX6: rename PLLs according to datasheet
ARM i.MX6: Add pwm support
ARM i.MX51: Add pwm support
ARM i.MX53: Add pwm support
ARM: mx5: Replace clk_register_clkdev with clock DT lookup
...
Diffstat (limited to 'arch/arm/mach-tegra/sleep-tegra20.S')
-rw-r--r-- | arch/arm/mach-tegra/sleep-tegra20.S | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/sleep-tegra20.S b/arch/arm/mach-tegra/sleep-tegra20.S new file mode 100644 index 000000000000..72ce709799da --- /dev/null +++ b/arch/arm/mach-tegra/sleep-tegra20.S @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2010-2012, NVIDIA Corporation. All rights reserved. + * Copyright (c) 2011, Google, Inc. + * + * Author: Colin Cross <ccross@android.com> + * Gary King <gking@nvidia.com> + * + * 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 "sleep.h" +#include "flowctrl.h" + +#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_PM_SLEEP) +/* + * tegra20_hotplug_shutdown(void) + * + * puts the current cpu in reset + * should never return + */ +ENTRY(tegra20_hotplug_shutdown) + /* Turn off SMP coherency */ + exit_smp r4, r5 + + /* Put this CPU down */ + cpu_id r0 + bl tegra20_cpu_shutdown + mov pc, lr @ should never get here +ENDPROC(tegra20_hotplug_shutdown) + +/* + * tegra20_cpu_shutdown(int cpu) + * + * r0 is cpu to reset + * + * puts the specified CPU in wait-for-event mode on the flow controller + * and puts the CPU in reset + * can be called on the current cpu or another cpu + * if called on the current cpu, does not return + * MUST NOT BE CALLED FOR CPU 0. + * + * corrupts r0-r3, r12 + */ +ENTRY(tegra20_cpu_shutdown) + cmp r0, #0 + moveq pc, lr @ must not be called for CPU 0 + + cpu_to_halt_reg r1, r0 + ldr r3, =TEGRA_FLOW_CTRL_VIRT + mov r2, #FLOW_CTRL_WAITEVENT | FLOW_CTRL_JTAG_RESUME + str r2, [r3, r1] @ put flow controller in wait event mode + ldr r2, [r3, r1] + isb + dsb + movw r1, 0x1011 + mov r1, r1, lsl r0 + ldr r3, =TEGRA_CLK_RESET_VIRT + str r1, [r3, #0x340] @ put slave CPU in reset + isb + dsb + cpu_id r3 + cmp r3, r0 + beq . + mov pc, lr +ENDPROC(tegra20_cpu_shutdown) +#endif |