diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 10:33:08 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-24 10:33:08 -0700 |
commit | e731f3146ff3bba5424b40140e1a7e6f92e94964 (patch) | |
tree | c926040385de8b020763f0d2338e0ccbf42bac45 /arch/arm/mach-s3c/sleep-s3c2412.S | |
parent | 1f70935f637dfba226bf77182c2629fde61ed06e (diff) | |
parent | accdab6d9e8f715068d91ee0ca0424a6999f0d19 (diff) |
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
"SoC changes, a substantial part of this is cleanup of some of the
older platforms that used to have a bunch of board files.
In particular:
- Remove non-DT i.MX platforms that haven't seen activity in years,
it's time to remove them.
- A bunch of cleanup and removal of platform data for TI/OMAP
platforms, moving over to genpd for power/reset control (yay!)
- Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
closer to multiplatform support (not quite there yet, but getting
close).
There are a few other changes too, smaller fixlets, etc. For new
platform support, the primary ones are:
- New SoC: Hisilicon SD5203, ARM926EJ-S platform.
- Cpufreq support for i.MX7ULP"
* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits)
ARM: mstar: Select MStar intc
ARM: stm32: Replace HTTP links with HTTPS ones
ARM: debug: add UART early console support for SD5203
ARM: hisi: add support for SD5203 SoC
ARM: omap3: enable off mode automatically
clk: imx: imx35: Remove mx35_clocks_init()
clk: imx: imx31: Remove mx31_clocks_init()
clk: imx: imx27: Remove mx27_clocks_init()
ARM: imx: Remove unused definitions
ARM: imx35: Retrieve the IIM base address from devicetree
ARM: imx3: Retrieve the AVIC base address from devicetree
ARM: imx3: Retrieve the CCM base address from devicetree
ARM: imx31: Retrieve the IIM base address from devicetree
ARM: imx27: Retrieve the CCM base address from devicetree
ARM: imx27: Retrieve the SYSCTRL base address from devicetree
ARM: s3c64xx: bring back notes from removed debug-macro.S
ARM: s3c24xx: fix Wunused-variable warning on !MMU
ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
MAINTAINERS: mark linux-samsung-soc list non-moderated
ARM: imx: Remove remnant board file support pieces
...
Diffstat (limited to 'arch/arm/mach-s3c/sleep-s3c2412.S')
-rw-r--r-- | arch/arm/mach-s3c/sleep-s3c2412.S | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c/sleep-s3c2412.S b/arch/arm/mach-s3c/sleep-s3c2412.S new file mode 100644 index 000000000000..b4b61737fbb2 --- /dev/null +++ b/arch/arm/mach-s3c/sleep-s3c2412.S @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2007 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2412 Power Manager low-level sleep support + */ + +#include <linux/linkage.h> +#include <asm/assembler.h> +#include "map.h" + +#include "regs-irq.h" + + .text + + .global s3c2412_sleep_enter + +s3c2412_sleep_enter: + mov r0, #0 /* argument for coprocessors */ + ldr r1, =S3C2410_INTPND + ldr r2, =S3C2410_SRCPND + ldr r3, =S3C2410_EINTPEND + + teq r0, r0 + bl s3c2412_sleep_enter1 + teq pc, r0 + bl s3c2412_sleep_enter1 + + .align 5 + + /* this is called twice, first with the Z flag to ensure that the + * instructions have been loaded into the cache, and the second + * time to try and suspend the system. + */ +s3c2412_sleep_enter1: + mcr p15, 0, r0, c7, c10, 4 + mcrne p15, 0, r0, c7, c0, 4 + + /* if we return from here, it is because an interrupt was + * active when we tried to shutdown. Try and ack the IRQ and + * retry, as simply returning causes the system to lock. + */ + + ldrne r9, [r1] + strne r9, [r1] + ldrne r9, [r2] + strne r9, [r2] + ldrne r9, [r3] + strne r9, [r3] + bne s3c2412_sleep_enter1 + + ret lr |