gpu: nvgpu: MSCG support

- Added enable_mscg, mscg_enabled & mscg_stat flags,
  mscg_enabled flag can be used to controll
  mscg enable/disable at runtime along with mscg_stat flag.
- Added defines & interface to support ms/mclk-change/post-init-param
- Added defines for lpwr tables read  from vbios.
- HAL to support post init param which is require
  to setup clockgating interface in PMU & interfaces used during
  mscg state machine.
- gk20a_pmu_pg_global_enable() can be called when pg support
  required to enable/disable, this also checks & wait
  if pstate switch is in progress till it complets
- pg_mutex to protect PG-RPPG/MSCG enable/disable

JIRA DNVGPU-71

Change-Id: If312cefc888a4de0a5c96898baeaac1a76e53e46
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1247554
(cherry picked from commit e6c94948b8058ba642ea56677ad798fc56b8a28a)
Reviewed-on: http://git-master/r/1270971
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.c b/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.c
index cd3ab0c2..f86a7377 100644
--- a/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/dbg_gpu_gk20a.c
@@ -1169,8 +1169,8 @@ static int dbg_set_powergate(struct dbg_session_gk20a *dbg_s, u32  powermode)
                                 return -EPERM;
 
                         /*do elpg disable before clock gating */
-                        if (support_gk20a_pmu(g->dev))
-                                gk20a_pmu_disable_elpg(g);
+                        gk20a_pmu_pg_global_enable(g, false);
+
                         if (g->ops.clock_gating.slcg_gr_load_gating_prod)
                                 g->ops.clock_gating.slcg_gr_load_gating_prod(g,
                                                 false);
@@ -1216,8 +1216,7 @@ static int dbg_set_powergate(struct dbg_session_gk20a *dbg_s, u32  powermode)
                                 g->ops.clock_gating.slcg_gr_load_gating_prod(g,
                                                 g->slcg_enabled);
 
-                        if (support_gk20a_pmu(g->dev))
-                                gk20a_pmu_enable_elpg(g);
+                        gk20a_pmu_pg_global_enable(g, true);
 
                         gk20a_dbg(gpu_dbg_gpu_dbg | gpu_dbg_fn, "module idle");
                         gk20a_idle(dbg_s->dev);