p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

ARM: firmware: add AFTR mode support to firmware do_idle method 

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.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2014-09-25 17:59:41 +09:00 committed by Kukjin Kim
parent 134abc297e
commit 0b7778a801
4 changed files with 15 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/include/asm/firmware.h
View File

@ -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
*/

5
arch/arm/mach-exynos/common.h
View File

@ -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);

10
arch/arm/mach-exynos/firmware.c
View File

@ -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;
}

2
arch/arm/mach-tegra/cpuidle-tegra114.c
View File

@ -49,7 +49,7 @@ static int tegra114_idle_power_down(struct cpuidle_device *dev,
call_firmware_op(prepare_idle);
/* Do suspend by ourselves if the firmware does not implement it */
if (call_firmware_op(do_idle) == -ENOSYS)
if (call_firmware_op(do_idle, 0) == -ENOSYS)
cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, &dev->cpu);