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>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gm206/bios_gm206.h b/drivers/gpu/nvgpu/gm206/bios_gm206.h
index 1d813df5..6fe19fb0 100644
--- a/drivers/gpu/nvgpu/gm206/bios_gm206.h
+++ b/drivers/gpu/nvgpu/gm206/bios_gm206.h
@@ -44,6 +44,9 @@ enum {
         VOLTAGE_RAIL_TABLE = 26,
         VOLTAGE_DEVICE_TABLE,
         VOLTAGE_POLICY_TABLE,
+        LOWPOWER_TABLE,
+        LOWPOWER_GR_TABLE = 32,
+        LOWPOWER_MS_TABLE = 33,
 };
 
 enum {
diff --git a/drivers/gpu/nvgpu/gm206/pmu_gm206.c b/drivers/gpu/nvgpu/gm206/pmu_gm206.c
index d109be97..1aff6ea6 100644
--- a/drivers/gpu/nvgpu/gm206/pmu_gm206.c
+++ b/drivers/gpu/nvgpu/gm206/pmu_gm206.c
@@ -159,6 +159,9 @@ void gm206_init_pmu_ops(struct gpu_ops *gops)
         gops->pmu.pmu_pg_init_param = NULL;
         gops->pmu.pmu_pg_supported_engines_list = NULL;
         gops->pmu.pmu_pg_engines_feature_list = NULL;
+        gops->pmu.pmu_lpwr_enable_pg = NULL;
+        gops->pmu.pmu_lpwr_disable_pg = NULL;
+        gops->pmu.pmu_pg_param_post_init = NULL;
         gops->pmu.send_lrf_tex_ltc_dram_overide_en_dis_cmd = NULL;
         gops->pmu.dump_secure_fuses = NULL;
         gops->pmu.reset = gk20a_pmu_reset;