gpu: nvgpu: Add DT support for TPC_PG_POWERGATE

Added support for TPC_PG_POWERGATE during probe for nvgpu via DT.
A new DT binding GV11B_FUSE_OPT_TPC_DISABLE is supported by nvgpu
driver that checks for valid masks and updates the global tpc_pg_mask
flag.

Bug 200518434

Change-Id: Ia65ae518b48e36d28de5e9375bc994232f6a9438
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2117783
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/platform_gv11b_tegra.c b/drivers/gpu/nvgpu/os/linux/platform_gv11b_tegra.c
index dafa05e5..4a94c1cd 100644
--- a/drivers/gpu/nvgpu/os/linux/platform_gv11b_tegra.c
+++ b/drivers/gpu/nvgpu/os/linux/platform_gv11b_tegra.c
@@ -218,6 +218,28 @@ static int gv11b_tegra_suspend(struct device *dev)
         return 0;
 }
 
+static bool is_tpc_mask_valid(struct gk20a_platform *platform, u32 tpc_mask)
+{
+        u32 i;
+        bool valid = false;
+
+        for (i = 0; i < MAX_TPC_PG_CONFIGS; i++) {
+                if (tpc_mask == platform->valid_tpc_mask[i])
+                        valid = true;
+        }
+        return valid;
+}
+
+static void gv11b_tegra_set_tpc_pg_mask(struct device *dev, u32 tpc_mask)
+{
+        struct gk20a_platform *platform = gk20a_get_platform(dev);
+        struct gk20a *g = get_gk20a(dev);
+
+        if (is_tpc_mask_valid(platform, tpc_mask)) {
+                g->tpc_pg_mask = tpc_mask;
+        }
+}
+
 struct gk20a_platform gv11b_tegra_platform = {
         .has_syncpoints = true,
 
@@ -237,6 +259,8 @@ struct gk20a_platform gv11b_tegra_platform = {
         .valid_tpc_mask[1]      = 0x1,
         .valid_tpc_mask[2]      = 0x5,
 
+        .set_tpc_pg_mask        = gv11b_tegra_set_tpc_pg_mask,
+
         .can_slcg               = true,
         .can_blcg               = true,
         .can_elcg               = true,