diff options
| author | Karthik Ramakrishnan <karthikr@nvidia.com> | 2013-09-23 21:47:26 -0700 |
|---|---|---|
| committer | Ajay Nandakumar <anandakumarm@nvidia.com> | 2013-10-03 19:17:50 +0530 |
| commit | 69eccd644e454f459436c7601180a789a5bd50bb (patch) | |
| tree | 6647067dbb44ed6824b60ceea8a1524929f87d0e /arch/arm/mach-tegra/tegra3_actmon.c | |
| parent | bd65c015c97c87454e9dc0988485cd4191fe4d0c (diff) | |
arm: tegra: Handle down interrupt of actmon
When the cpu load starts going down, the down interrupt is
disabled. This stops further interrupts and if missed, the emc
frequency is locked to high.
The change re-enables down watermark interrupts if gets disabled
due to emc lock.
Bug 1338326
Change-Id: I838eb05b313f9ddc287226c25f23e115fe117599
Signed-off-by: Karthik Ramakrishnan <karthikr@nvidia.com>
Reviewed-on: http://git-master/r/278131
(cherry picked from commit bbc6fff3b3fc0f964dba1ed6a22280d45119bd16)
Reviewed-on: http://git-master/r/280205
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Puneet Saxena <puneets@nvidia.com>
Tested-by: Puneet Saxena <puneets@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
(cherry picked from commit fc68f39f4010db692892723086f4ae00622140ac)
Signed-off-by: Ajay Nandakumar <anandakumarm@nvidia.com>
Diffstat (limited to 'arch/arm/mach-tegra/tegra3_actmon.c')
| -rw-r--r-- | arch/arm/mach-tegra/tegra3_actmon.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/tegra3_actmon.c b/arch/arm/mach-tegra/tegra3_actmon.c index 4960146a9f33..f76554dd3fc5 100644 --- a/arch/arm/mach-tegra/tegra3_actmon.c +++ b/arch/arm/mach-tegra/tegra3_actmon.c @@ -257,6 +257,14 @@ irqreturn_t actmon_dev_isr(int irq, void *dev_id) } actmon_writel(val, offs(ACTMON_DEV_CTRL)); } + if (dev->avg_dependency_threshold) { + val = actmon_readl(offs(ACTMON_DEV_CTRL)); + if (dev->avg_count >= dev->avg_dependency_threshold) + val |= ACTMON_DEV_CTRL_DOWN_WMARK_ENB; + else if (dev->boost_freq == 0) + val &= ~ACTMON_DEV_CTRL_DOWN_WMARK_ENB; + actmon_writel(val, offs(ACTMON_DEV_CTRL)); + } actmon_writel(0xffffffff, offs(ACTMON_DEV_INTR_STATUS)); /* clr all */ actmon_wmb(); |