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| author | Tomasz Figa <t.figa@samsung.com> | 2013-03-21 18:48:45 +0100 |
|---|---|---|
| committer | Chanho Park <chanho61.park@samsung.com> | 2014-11-18 11:43:23 +0900 |
| commit | 2cca3eddf1bded86eaa43228f0b5672ecf1110be (patch) | |
| tree | 05e3a6e39b5e3ab67a8bc2950e6f162f6fbc987f /arch/arm/mach-exynos/firmware.c | |
| parent | aa75091c073173c5b3eadd7fcae80af8556e0b68 (diff) | |
| download | linux-3.10-2cca3eddf1bded86eaa43228f0b5672ecf1110be.tar.gz linux-3.10-2cca3eddf1bded86eaa43228f0b5672ecf1110be.tar.bz2 linux-3.10-2cca3eddf1bded86eaa43228f0b5672ecf1110be.zip | |
ARM: EXYNOS: Add support for firmware-assisted suspend/resume
This patch adds firmware ops related to system suspend/resume that
allows suspend/resume of systems with secure firmware.
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos/firmware.c')
| -rw-r--r-- | arch/arm/mach-exynos/firmware.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index da5fb26ea04..3f98bf78c09 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -20,6 +20,8 @@ #include "smc.h" +#define EXYNOS_SLEEP_MAGIC 0x00000BAD + static int exynos_do_idle(void) { exynos_smc(SMC_CMD_SLEEP, 0, 0, 0); @@ -47,11 +49,37 @@ static int exynos_l2x0_init(void) return 0; } +static int exynos_suspend(unsigned long resume_addr) +{ + writel(EXYNOS_SLEEP_MAGIC, S5P_VA_SYSRAM_NS + 0xC); + writel(resume_addr, S5P_VA_SYSRAM_NS + 0x8); + exynos_smc(SMC_CMD_SLEEP, 0, 0, 0); + + return 0; +} + +static int exynos_resume(void) +{ + writel(0, S5P_VA_SYSRAM_NS + 0xC); + + return 0; +} + +static int exynos_c15resume(u32 *regs) +{ + exynos_smc(SMC_CMD_C15RESUME, regs[0], regs[1], 0); + + return 0; +} + static const struct firmware_ops exynos_firmware_ops = { .do_idle = exynos_do_idle, .set_cpu_boot_addr = exynos_set_cpu_boot_addr, .cpu_boot = exynos_cpu_boot, .l2x0_init = exynos_l2x0_init, + .suspend = exynos_suspend, + .resume = exynos_resume, + .c15resume = exynos_c15resume, }; void __init exynos_firmware_init(void) |