msm: kgsl: Switch pagetables in stream for IOMMU
Switch IOMMU pagetables by using GPU commands instead of using the CPU.
This is better for performance because the synchronization required for
switching pagetables instream using GPU commands is less expensive
comparedto synchronization required when switching pagetables using the
CPU
Change-Id: I00e676bbf04a4c9fa944e896a367ba837d3606f5
Signed-off-by: Shubhraprakash Das <sadas@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c
index 3a29d71..2aaefba 100644
--- a/drivers/gpu/msm/kgsl_pwrctrl.c
+++ b/drivers/gpu/msm/kgsl_pwrctrl.c
@@ -706,6 +706,7 @@
}
kgsl_pwrctrl_irq(device, KGSL_PWRFLAGS_OFF);
kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_OFF, KGSL_STATE_NAP);
+ kgsl_mmu_disable_clk(&device->mmu);
kgsl_pwrctrl_set_state(device, KGSL_STATE_NAP);
if (device->idle_wakelock.name)
wake_unlock(&device->idle_wakelock);
@@ -749,6 +750,7 @@
gpu_freq);
_sleep_accounting(device);
kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_OFF, KGSL_STATE_SLEEP);
+ kgsl_mmu_disable_clk(&device->mmu);
kgsl_pwrctrl_set_state(device, KGSL_STATE_SLEEP);
wake_unlock(&device->idle_wakelock);
pm_qos_update_request(&device->pm_qos_req_dma,
@@ -888,6 +890,7 @@
/* Order pwrrail/clk sequence based upon platform */
kgsl_pwrctrl_axi(device, KGSL_PWRFLAGS_OFF);
kgsl_pwrctrl_clk(device, KGSL_PWRFLAGS_OFF, KGSL_STATE_SLEEP);
+ kgsl_mmu_disable_clk(&device->mmu);
kgsl_pwrctrl_pwrrail(device, KGSL_PWRFLAGS_OFF);
}
EXPORT_SYMBOL(kgsl_pwrctrl_disable);