From c81cc032c48a1b25e095b17b77399166c9091ff3 Mon Sep 17 00:00:00 2001 From: Debarshi Dutta Date: Tue, 30 Apr 2019 13:54:08 +0530 Subject: gpu: nvgpu: add cg and pg function Add new power/clock gating functions that can be called by other units. New clock_gating functions will reside in cg.c under common/power_features/cg unit. New power gating functions will reside in pg.c under common/power_features/pg unit. Use nvgpu_pg_elpg_disable and nvgpu_pg_elpg_enable to disable/enable elpg and also in gr_gk20a_elpg_protected macro to access gr registers. Add cg_pg_lock to make elpg_enabled, elcg_enabled, blcg_enabled and slcg_enabled thread safe. JIRA NVGPU-2014 Change-Id: I00d124c2ee16242c9a3ef82e7620fbb7f1297aff Signed-off-by: Seema Khowala Reviewed-on: https://git-master.nvidia.com/r/2025493 Signed-off-by: Debarshi Dutta (cherry-picked from c90585856567a547173a8b207365b3a4a3ccdd57 in dev-kernel) Reviewed-on: https://git-master.nvidia.com/r/2108406 GVS: Gerrit_Virtual_Submit Reviewed-by: Bibek Basu Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/os/linux/driver_common.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/gpu/nvgpu/os/linux/driver_common.c') diff --git a/drivers/gpu/nvgpu/os/linux/driver_common.c b/drivers/gpu/nvgpu/os/linux/driver_common.c index cf7877e2..ea4dadac 100644 --- a/drivers/gpu/nvgpu/os/linux/driver_common.c +++ b/drivers/gpu/nvgpu/os/linux/driver_common.c @@ -65,6 +65,7 @@ static void nvgpu_init_vars(struct gk20a *g) nvgpu_mutex_init(&g->ctxsw_disable_lock); nvgpu_mutex_init(&g->tpc_pg_lock); nvgpu_mutex_init(&g->clk_arb_enable_lock); + nvgpu_mutex_init(&g->cg_pg_lock); /* Init the clock req count to 0 */ nvgpu_atomic_set(&g->clk_arb_global_nr, 0); -- cgit v1.2.2