gpu: nvgpu: get voltage, current, power and temperature

Add ioctls to retrieve voltage, current, power and temperature.
Add flags in GPU characteristics to indicate if feature is supported.

Jira DNVGPU-166

Change-Id: Ifaafe2efdb6b09d7b28215b641814f28e894151e
Signed-off-by: David Martinez Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1241861
Tested-by: Thomas Fleury <tfleury@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1267122

1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp106/hal_gp106.c b/drivers/gpu/nvgpu/gp106/hal_gp106.c
index dc27cdae..ee361953 100644
--- a/drivers/gpu/nvgpu/gp106/hal_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/hal_gp106.c
@@ -187,6 +187,24 @@ static int gp106_get_litter_value(struct gk20a *g, int value)
         return ret;
 }
 
+int gp106_init_gpu_characteristics(struct gk20a *g)
+{
+        struct nvgpu_gpu_characteristics *gpu = &g->gpu_characteristics;
+
+        int err;
+
+        err = gk20a_init_gpu_characteristics(g);
+        if (err)
+                return err;
+
+        gpu->flags |= NVGPU_GPU_FLAGS_SUPPORT_GET_VOLTAGE |
+                        NVGPU_GPU_FLAGS_SUPPORT_GET_CURRENT |
+                        NVGPU_GPU_FLAGS_SUPPORT_GET_POWER |
+                        NVGPU_GPU_FLAGS_SUPPORT_GET_TEMPERATURE;
+
+        return 0;
+}
+
 int gp106_init_hal(struct gk20a *g)
 {
         struct gpu_ops *gops = &g->ops;
@@ -224,7 +242,7 @@ int gp106_init_hal(struct gk20a *g)
 
         gops->name = "gp10x";
         gops->get_litter_value = gp106_get_litter_value;
-        gops->chip_init_gpu_characteristics = gk20a_init_gpu_characteristics;
+        gops->chip_init_gpu_characteristics = gp106_init_gpu_characteristics;
         gops->gr_ctx.use_dma_for_fw_bootstrap = true;
         gops->read_ptimer = gk20a_read_ptimer;