gpu: nvgpu: disable powergating for kernel-4.14 in gp10b temporarily.

All the powergating features such as railgating and other clock-gating
are disabled temporarily for kernel-4.14 which leads to several kernel-panics.
These will be re-enabled later.

Bug 200414723
Bug 200424473

Change-Id: I72b95bf027517309bd4ae32d0513e458ae46283f
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1756503
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-by: Bitan Biswas <bbiswas@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/os/linux/platform_gp10b_tegra.c
index 5cb82687..00fd386e 100644
--- a/drivers/gpu/nvgpu/os/linux/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/os/linux/platform_gp10b_tegra.c
@@ -13,6 +13,7 @@
  * more details.
  */
 
+#include <linux/version.h>
 #include <linux/of_platform.h>
 #include <linux/debugfs.h>
 #include <linux/dma-buf.h>
@@ -385,6 +386,18 @@ struct gk20a_platform gp10b_tegra_platform = {
         .ldiv_slowdown_factor_init = SLOWDOWN_FACTOR_FPDIV_BY16,
 
         /* power management configuration */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)
+        .can_railgate_init      = false,
+        .enable_elpg            = false,
+        .can_elpg_init          = false,
+        .enable_blcg            = false,
+        .enable_slcg            = false,
+        .enable_elcg            = false,
+        .can_slcg               = false,
+        .can_blcg               = false,
+        .can_elcg               = false,
+        .enable_aelpg       = false,
+#else
         .can_railgate_init      = true,
         .enable_elpg            = true,
         .can_elpg_init          = true,
@@ -395,6 +408,7 @@ struct gk20a_platform gp10b_tegra_platform = {
         .can_blcg               = true,
         .can_elcg               = true,
         .enable_aelpg       = true,
+#endif
         .enable_perfmon         = true,
 
         /* ptimer src frequency in hz*/