gpu: nvgpu: skip clk gating prog for sim/emu.

For Simualtion/Emulation platforms,clock gating
should be skipped as it is not supported.
Added new flags "can_"X"lcg" to check platform
capability before doing SLCG,BLCG and ELCG.

Bug 200314250

Change-Id: I4124d444a77a4c06df8c1d82c6038bfd457f3db0
Signed-off-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1566049
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 679b8492..628b6823 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -4067,6 +4067,9 @@ void gr_gk20a_init_blcg_mode(struct gk20a *g, u32 mode, u32 engine)
 {
         u32 gate_ctrl;
 
+        if (!nvgpu_is_enabled(g, NVGPU_GPU_CAN_BLCG))
+                return;
+
         gate_ctrl = gk20a_readl(g, therm_gate_ctrl_r(engine));
 
         switch (mode) {
@@ -4095,6 +4098,9 @@ void gr_gk20a_init_elcg_mode(struct gk20a *g, u32 mode, u32 engine)
 
         gate_ctrl = gk20a_readl(g, therm_gate_ctrl_r(engine));
 
+        if (!nvgpu_is_enabled(g, NVGPU_GPU_CAN_ELCG))
+                return;
+
         switch (mode) {
         case ELCG_RUN:
                 gate_ctrl = set_field(gate_ctrl,