gpu: nvgpu: MSCG support

- update gp106 pg engine init/list/features HALs
  to support MS engine
- Added defines & interface for lpwr tables read  from vbios.
- lpwr module which reads idx/gr/ms table from vbios to
  map rppg/mscg support with respective p-state
- lpwr module public functions to control lpwr
  features enable/disable mscg/rppg & mclk-change
  request whenever change in mclk-change parameters
- lpwr public functions to know rppg/mscg support for
  requested pstate,
- added mutex t prevent PG transition while arbiter
  executes pstate transition
- nvgpu_clk_arb_get_current_pstate() of clk arbiter to
  get current pstate

JIRA DNVGPU-71

Change-Id: Ifcd640cc19ef630be1e2a9ba07ec84023d8202a0
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1247553
(cherry picked from commit 8a441dea2410e1b5196ef24e56a7768b6980e46b)
Reviewed-on: http://git-master/r/1270989
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_arb.h b/drivers/gpu/nvgpu/clk/clk_arb.h
index 8355dac5..700804b3 100644
--- a/drivers/gpu/nvgpu/clk/clk_arb.h
+++ b/drivers/gpu/nvgpu/clk/clk_arb.h
@@ -62,5 +62,10 @@ int nvgpu_clk_arb_install_request_fd(struct gk20a *g,
         struct nvgpu_clk_session *session, int *event_fd);
 
 void nvgpu_clk_arb_schedule_vf_table_update(struct gk20a *g);
+
+int nvgpu_clk_arb_get_current_pstate(struct gk20a *g);
+
+void nvgpu_clk_arb_pstate_change_lock(struct gk20a *g, bool lock);
+
 #endif /* _CLK_ARB_H_ */