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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/arch/arm/mach-exynos/pm.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/arch/arm/mach-exynos/pm.c')
-rw-r--r--kernel/arch/arm/mach-exynos/pm.c51
1 files changed, 43 insertions, 8 deletions
diff --git a/kernel/arch/arm/mach-exynos/pm.c b/kernel/arch/arm/mach-exynos/pm.c
index cc75ab448..9c1506b49 100644
--- a/kernel/arch/arm/mach-exynos/pm.c
+++ b/kernel/arch/arm/mach-exynos/pm.c
@@ -22,6 +22,7 @@
#include <asm/firmware.h>
#include <asm/smp_scu.h>
#include <asm/suspend.h>
+#include <asm/cacheflush.h>
#include <mach/map.h>
@@ -209,6 +210,8 @@ static int exynos_cpu0_enter_aftr(void)
* sequence, let's wait for one of these to happen
*/
while (exynos_cpu_power_state(1)) {
+ unsigned long boot_addr;
+
/*
* The other cpu may skip idle and boot back
* up again
@@ -221,7 +224,11 @@ static int exynos_cpu0_enter_aftr(void)
* boot back up again, getting stuck in the
* boot rom code
*/
- if (__raw_readl(cpu_boot_reg_base()) == 0)
+ ret = exynos_get_boot_addr(1, &boot_addr);
+ if (ret)
+ goto fail;
+ ret = -1;
+ if (boot_addr == 0)
goto abort;
cpu_relax();
@@ -233,11 +240,14 @@ static int exynos_cpu0_enter_aftr(void)
abort:
if (cpu_online(1)) {
+ unsigned long boot_addr = virt_to_phys(exynos_cpu_resume);
+
/*
* Set the boot vector to something non-zero
*/
- __raw_writel(virt_to_phys(exynos_cpu_resume),
- cpu_boot_reg_base());
+ ret = exynos_set_boot_addr(1, boot_addr);
+ if (ret)
+ goto fail;
dsb();
/*
@@ -247,22 +257,42 @@ abort:
while (exynos_cpu_power_state(1) != S5P_CORE_LOCAL_PWR_EN)
cpu_relax();
+ if (soc_is_exynos3250()) {
+ while (!pmu_raw_readl(S5P_PMU_SPARE2) &&
+ !atomic_read(&cpu1_wakeup))
+ cpu_relax();
+
+ if (!atomic_read(&cpu1_wakeup))
+ exynos_core_restart(1);
+ }
+
while (!atomic_read(&cpu1_wakeup)) {
+ smp_rmb();
+
/*
* Poke cpu1 out of the boot rom
*/
- __raw_writel(virt_to_phys(exynos_cpu_resume),
- cpu_boot_reg_base());
- arch_send_wakeup_ipi_mask(cpumask_of(1));
+ ret = exynos_set_boot_addr(1, boot_addr);
+ if (ret)
+ goto fail;
+
+ call_firmware_op(cpu_boot, 1);
+
+ if (soc_is_exynos3250())
+ dsb_sev();
+ else
+ arch_send_wakeup_ipi_mask(cpumask_of(1));
}
}
-
+fail:
return ret;
}
static int exynos_wfi_finisher(unsigned long flags)
{
+ if (soc_is_exynos3250())
+ flush_cache_all();
cpu_do_idle();
return -1;
@@ -283,6 +313,9 @@ static int exynos_cpu1_powerdown(void)
*/
exynos_cpu_power_down(1);
+ if (soc_is_exynos3250())
+ pmu_raw_writel(0, S5P_PMU_SPARE2);
+
ret = cpu_suspend(0, exynos_wfi_finisher);
cpu_pm_exit();
@@ -299,7 +332,9 @@ cpu1_aborted:
static void exynos_pre_enter_aftr(void)
{
- __raw_writel(virt_to_phys(exynos_cpu_resume), cpu_boot_reg_base());
+ unsigned long boot_addr = virt_to_phys(exynos_cpu_resume);
+
+ (void)exynos_set_boot_addr(1, boot_addr);
}
static void exynos_post_enter_aftr(void)