On some platforms (i.e. EXYNOS ones) more than one idle mode is
available and we need to distinguish them in firmware do_idle method.
Add mode parameter to do_idle firmware method and AFTR mode support
to EXYNOS do_idle implementation.
This change is a preparation for adding secure firmware support to
EXYNOS cpuidle driver.
This patch shouldn't cause any functionality changes (please note
that do_idle firmware method is unused currently).
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
v6:
- no changes
arch/arm/include/asm/firmware.h | 2 +-
arch/arm/mach-exynos/common.h | 5 +++++
arch/arm/mach-exynos/firmware.c | 10 ++++++++--
3 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h
index 5904f59..89aefe1 100644
--- a/arch/arm/include/asm/firmware.h
+++ b/arch/arm/include/asm/firmware.h
@@ -28,7 +28,7 @@ struct firmware_ops {
/*
* Enters CPU idle mode
*/
- int (*do_idle)(void);
+ int (*do_idle)(unsigned long mode);
/*
* Sets boot address of specified physical CPU
*/
diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
index c218200..2d830df 100644
--- a/arch/arm/mach-exynos/common.h
+++ b/arch/arm/mach-exynos/common.h
@@ -119,6 +119,11 @@ extern void __iomem *sysram_base_addr;
extern void __iomem *pmu_base_addr;
void exynos_sysram_init(void);
+enum {
+ FW_DO_IDLE_SLEEP,
+ FW_DO_IDLE_AFTR,
+};
+
void exynos_firmware_init(void);
extern u32 exynos_get_eint_wake_mask(void);
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c
index f5e626d..e57b7c3 100644
--- a/arch/arm/mach-exynos/firmware.c
+++ b/arch/arm/mach-exynos/firmware.c
@@ -28,9 +28,15 @@
#define EXYNOS_BOOT_ADDR 0x8
#define EXYNOS_BOOT_FLAG 0xc
-static int exynos_do_idle(void)
+static int exynos_do_idle(unsigned long mode)
{
- exynos_smc(SMC_CMD_SLEEP, 0, 0, 0);
+ switch (mode) {
+ case FW_DO_IDLE_AFTR:
+ exynos_smc(SMC_CMD_CPU0AFTR, 0, 0, 0);
+ break;
+ case FW_DO_IDLE_SLEEP:
+ exynos_smc(SMC_CMD_SLEEP, 0, 0, 0);
+ }
return 0;
}
--
1.8.2.3
--
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