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gpu: nvgpu: Debugfs for Volt

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Changes:
1. Reading operating voltage and minimum voltage of chip.
2. Added nvgpu_volt_init_debugfs for creating the debugfs interface.
3. Command for reading current voltage:
   cat /sys/kernel/debug/gpu_pci/volt/current_voltage
4. Command for reading minimum voltage:
   cat /sys/kernel/debug/gpu_pci/volt/minimum_voltage

Jira NVGPU-1731

Change-Id: I76d42fc376235f37c44d259398bd6f125a90413b
Signed-off-by: rmylavarapu <rmylavarapu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1986403
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
rmylavarapu
2019-01-03 09:19:51 +05:30
committed by mobile promotions
parent 9467646a87
commit d174860854
6 changed files with 129 additions and 2 deletions
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4
drivers/gpu/nvgpu/os/linux/os_linux.h
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@@ -52,6 +52,10 @@ struct nvgpu_os_linux_ops {
struct {
int (*init_debugfs)(struct gk20a *g);
} fecs_trace;
struct {
int (*init_debugfs)(struct gk20a *g);
} volt;
};
struct nvgpu_os_linux {