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, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/pmgr/pmgr.h b/drivers/gpu/nvgpu/pmgr/pmgr.h
index 97e7b609..cf511fd1 100644
--- a/drivers/gpu/nvgpu/pmgr/pmgr.h
+++ b/drivers/gpu/nvgpu/pmgr/pmgr.h
@@ -27,5 +27,8 @@ struct pmgr_pmupstate {
 
 u32 pmgr_domain_sw_setup(struct gk20a *g);
 u32 pmgr_domain_pmu_setup(struct gk20a *g);
+int pmgr_pwr_devices_get_current(struct gk20a *g, u32 *val);
+int pmgr_pwr_devices_get_voltage(struct gk20a *g, u32 *val);
+int pmgr_pwr_devices_get_power(struct gk20a *g, u32 *val);
 
 #endif