gpu: nvgpu: Use TPC_PG_MASK to powergate the TPC

- In GV11B, read fuse_status_opt_tpc_gpc register
  to read which TPCs are floorswept.
- The driver will also read sysfs node: tpc_pg_mask
- Based on these two values "can_tpc_powergate" will
  be set to true or false and mask will be used to write to
  fuse_ctrl_opt_tpc_gpc register to powergate the TPC.
- can_tpc_powergate = true indicates that the mask value
  sent from userspace is valid and can be used to power gate
  the desired TPC
- can_tpc_powergate = false indicates that the mask value
  sent from userspace is not valid and cannot  be used to
  power gate the desired TPC.

Bug 200532639

Change-Id: Ib0806e4c96305a13b3574e8063ad8e16770aa7cd
Signed-off-by: Divya Singhatwaria <dsinghatwari@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2159219
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/module.c b/drivers/gpu/nvgpu/os/linux/module.c
index 964fc651..a81d837b 100644
--- a/drivers/gpu/nvgpu/os/linux/module.c
+++ b/drivers/gpu/nvgpu/os/linux/module.c
@@ -1200,7 +1200,8 @@ static int nvgpu_read_fuse_overrides(struct gk20a *g)
                         break;
                 case GV11B_FUSE_OPT_TPC_DISABLE:
                         if (platform->set_tpc_pg_mask != NULL)
-                                platform->set_tpc_pg_mask(dev_from_gk20a(g), value);
+                                platform->set_tpc_pg_mask(dev_from_gk20a(g),
+                                                                value);
                         break;
                 default:
                         nvgpu_err(g, "ignore unknown fuse override %08x", fuse);