mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 09:12:24 +03:00
88293ee42d
Currently reading temperature value depeads on therm pstate board objects. In absence of pstate reading temperature from therm get status will be failed which will cause GVS failure in NvRmGpuTest_Device_GetTemperature test. This change will add support to read temperature from therm sensor_00 register but this will have following limitation: - NV_THERM_I2CS_SENSOR_00 doesn't support fractional precision. - It doesn't support negative temperatures. BUG-200736830 Signed-off-by: Ramesh Mylavarapu <rmylavarapu@nvidia.com> Change-Id: I25e577dac9029fcd787a6f71957dbeefd6fe43dd Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2584269 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com> GVS: Gerrit_Virtual_Submit
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2019-2020, NVIDIA Corporation. All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include <nvgpu/pmu/therm.h>
|
|
|
|
#include "os_linux.h"
|
|
|
|
static int therm_get_internal_sensor_curr_temp(void *data, u64 *val)
|
|
{
|
|
struct gk20a *g = (struct gk20a *)data;
|
|
u32 readval;
|
|
int err = 0;
|
|
|
|
/*
|
|
* If PSTATE is enabled, temp value is taken from THERM_GET_STATUS.
|
|
* If PSTATE is disable, temp value is read from NV_THERM_I2CS_SENSOR_00
|
|
* register value.
|
|
*/
|
|
if (nvgpu_is_enabled(g, NVGPU_PMU_PSTATE)) {
|
|
err = nvgpu_pmu_therm_channel_get_curr_temp(g, &readval);
|
|
if (!err) {
|
|
*val = readval;
|
|
}
|
|
} else {
|
|
if (!g->ops.therm.get_internal_sensor_curr_temp) {
|
|
nvgpu_err(g, "reading NV_THERM_I2CS_SENSOR_00 not enabled");
|
|
return -EINVAL;
|
|
}
|
|
|
|
g->ops.therm.get_internal_sensor_curr_temp(g, &readval);
|
|
*val = readval;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
DEFINE_SIMPLE_ATTRIBUTE(therm_ctrl_fops, therm_get_internal_sensor_curr_temp, NULL, "%llu\n");
|
|
|
|
int tu104_therm_init_debugfs(struct gk20a *g)
|
|
{
|
|
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
|
|
struct dentry *dbgentry;
|
|
|
|
dbgentry = debugfs_create_file(
|
|
"temp", S_IRUGO, l->debugfs, g, &therm_ctrl_fops);
|
|
if (!dbgentry)
|
|
nvgpu_err(g, "debugfs entry create failed for therm_curr_temp");
|
|
|
|
return 0;
|
|
}
|