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, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_pmu.h b/drivers/gpu/nvgpu/volt/volt_pmu.h
index c98ba321..9af3fb68 100644
--- a/drivers/gpu/nvgpu/volt/volt_pmu.h
+++ b/drivers/gpu/nvgpu/volt/volt_pmu.h
@@ -17,6 +17,6 @@
 u32 volt_pmu_send_load_cmd_to_pmu(struct gk20a *g);
 u32 volt_set_voltage(struct gk20a *g, u32 logic_voltage_uv,
                 u32 sram_voltage_uv);
-u32 volt_get_voltage(struct gk20a *g, u32 volt_domain);
+u32 volt_get_voltage(struct gk20a *g, u32 volt_domain, u32 *voltage_uv);
 
 #endif