gpu:nvgpu:sysfs node to update aelpg parameter

Added sysfs node to update aelpg parameter.
Pass parameter as below sequence,
SAMPLING_PERIOD_PG_DEFAULT_US, MINIMUM_IDLE_FILTER_DEFAULT_US,
MINIMUM_TARGET_SAVING_DEFAULT_US, POWER_BREAKEVEN_DEFAULT_US,
CYCLES_PER_SAMPLE_MAX_DEFAULT

Bug 1464737

Change-Id: I46873c463820f30f190c722d7ed038622cb2710f
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/422702
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index c72b8735..3388a2ff 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1539,6 +1539,13 @@ static int gk20a_probe(struct platform_device *dev)
         gk20a->aelpg_enabled =
                 tegra_platform_is_silicon() ? platform->enable_aelpg : false;
 
+        /* set default values to aelpg parameters */
+        gk20a->pmu.aelpg_param[0] = APCTRL_SAMPLING_PERIOD_PG_DEFAULT_US;
+        gk20a->pmu.aelpg_param[1] = APCTRL_MINIMUM_IDLE_FILTER_DEFAULT_US;
+        gk20a->pmu.aelpg_param[2] = APCTRL_MINIMUM_TARGET_SAVING_DEFAULT_US;
+        gk20a->pmu.aelpg_param[3] = APCTRL_POWER_BREAKEVEN_DEFAULT_US;
+        gk20a->pmu.aelpg_param[4] = APCTRL_CYCLES_PER_SAMPLE_MAX_DEFAULT;
+
         gk20a_create_sysfs(dev);
 
 #ifdef CONFIG_DEBUG_FS