mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-23 01:50:07 +03:00
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* Copyright (c) 2019-2020, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/debugfs.h>
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#include "os_linux.h"
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#include <nvgpu/pmu/volt.h>
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static int get_curr_voltage(void *data, u64 *val)
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{
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struct gk20a *g = (struct gk20a *)data;
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u32 readval;
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int err;
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err = nvgpu_pmu_volt_get_curr_volt_ps35(g, &readval);
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if (!err)
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*val = readval;
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return err;
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}
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DEFINE_SIMPLE_ATTRIBUTE(curr_volt_ctrl_fops, get_curr_voltage, NULL, "%llu\n");
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static int get_min_voltage(void *data, u64 *val)
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{
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struct gk20a *g = (struct gk20a *)data;
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u32 minval, maxval;
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int err;
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err = nvgpu_pmu_volt_get_vmin_vmax_ps35(g, &minval, &maxval);
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if (!err)
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*val = minval;
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return err;
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}
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DEFINE_SIMPLE_ATTRIBUTE(min_volt_ctrl_fops, get_min_voltage, NULL, "%llu\n");
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static int get_max_voltage(void *data, u64 *val)
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{
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struct gk20a *g = (struct gk20a *)data;
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u32 minval, maxval;
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int err;
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err = nvgpu_pmu_volt_get_vmin_vmax_ps35(g, &minval, &maxval);
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if (!err)
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*val = maxval;
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return err;
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}
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DEFINE_SIMPLE_ATTRIBUTE(max_volt_ctrl_fops, get_max_voltage, NULL, "%llu\n");
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int nvgpu_volt_init_debugfs(struct gk20a *g)
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{
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struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
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struct dentry *dbgentry, *volt_root;
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volt_root = debugfs_create_dir("volt", l->debugfs);
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dbgentry = debugfs_create_file(
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"current_voltage", S_IRUGO, volt_root, g, &curr_volt_ctrl_fops);
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if (!dbgentry) {
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pr_err("%s: Failed to make debugfs node\n", __func__);
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return -ENOMEM;
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}
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dbgentry = debugfs_create_file("minimum_voltage",
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S_IRUGO, volt_root, g, &min_volt_ctrl_fops);
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if (!dbgentry) {
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pr_err("%s: Failed to make debugfs node\n", __func__);
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return -ENOMEM;
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}
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dbgentry = debugfs_create_file("maximum_voltage",
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S_IRUGO, volt_root, g, &max_volt_ctrl_fops);
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if (!dbgentry) {
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pr_err("%s: Failed to make debugfs node\n", __func__);
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return -ENOMEM;
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}
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return 0;
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}
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