gpu: nvgpu: vgpu: add support for max_freq

Add vgpu support for max_freq characteristic

Bug 200182714
JIRASW VFND-1570

Change-Id: Ibeddfbba1bf0529d6f576cefcb82978dbae315d1
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: http://git-master/r/1149216
(cherry picked from commit 8e8b5979e87268401d5b0fc658a73589710a2e09)
Reviewed-on: http://git-master/r/1155416
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/vgpu.c b/drivers/gpu/nvgpu/vgpu/vgpu.c
index 4948d246..aa4ece5f 100644
--- a/drivers/gpu/nvgpu/vgpu/vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/vgpu.c
@@ -258,6 +258,26 @@ static void vgpu_detect_chip(struct gk20a *g)
                         g->gpu_characteristics.rev);
 }
 
+static int vgpu_init_gpu_characteristics(struct gk20a *g)
+{
+        struct gk20a_platform *platform = gk20a_get_platform(g->dev);
+        u32 max_freq;
+        int err;
+
+        gk20a_dbg_fn("");
+
+        err = gk20a_init_gpu_characteristics(g);
+        if (err)
+                return err;
+
+        if (vgpu_get_attribute(platform->virt_handle,
+                        TEGRA_VGPU_ATTRIB_MAX_FREQ, &max_freq))
+                return -ENOMEM;
+
+        g->gpu_characteristics.max_freq = max_freq;
+        return 0;
+}
+
 void vgpu_init_hal_common(struct gk20a *g)
 {
         struct gpu_ops *gops = &g->ops;
@@ -269,7 +289,7 @@ void vgpu_init_hal_common(struct gk20a *g)
         vgpu_init_debug_ops(gops);
         vgpu_init_fecs_trace_ops(gops);
         vgpu_init_tsg_ops(gops);
-        gops->chip_init_gpu_characteristics = gk20a_init_gpu_characteristics;
+        gops->chip_init_gpu_characteristics = vgpu_init_gpu_characteristics;
 }
 
 static int vgpu_init_hal(struct gk20a *g)