gpu: nvgpu: skip power device programming if missing

Monitoring INA3221 is currently missing on some customer
designs. If power device is missing, skip programming
of power device and power policy in PMU. Also clear
related features in GPU characterictics (get voltage,
current and power features are not supported).

Bug 1903258

Change-Id: Ibd9d89e5833afb350c52b76527c54923055aee5e
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1459919
(cherry picked from commit e7e21c451843bddb8e8ac9e3db3b1d4b4a4c272c)
Reviewed-on: http://git-master/r/1463105
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp106/hal_gp106.c b/drivers/gpu/nvgpu/gp106/hal_gp106.c
index 7459c57f..8f72522f 100644
--- a/drivers/gpu/nvgpu/gp106/hal_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/hal_gp106.c
@@ -207,6 +207,13 @@ int gp106_init_gpu_characteristics(struct gk20a *g)
                         NVGPU_GPU_FLAGS_SUPPORT_DEVICE_EVENTS |
                         NVGPU_GPU_FLAGS_SUPPORT_SET_THERM_ALERT_LIMIT;
 
+        /* WAR for missing INA3221 on HW2.5 RevA */
+        if (g->power_sensor_missing) {
+                gpu->flags &= ~(NVGPU_GPU_FLAGS_SUPPORT_GET_VOLTAGE |
+                                NVGPU_GPU_FLAGS_SUPPORT_GET_CURRENT |
+                                NVGPU_GPU_FLAGS_SUPPORT_GET_POWER);
+        }
+
         return 0;
 }