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/*
* Copyright (c) 2016, 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.
*/
#include "therm_gp106.h"
#include <linux/debugfs.h>
#include "hw_therm_gp106.h"
#ifdef CONFIG_DEBUG_FS
static int therm_get_internal_sensor_curr_temp(void *data, u64 *val)
{
struct gk20a *g = (struct gk20a *)data;
int err = 0;
u32 readval;
readval = gk20a_readl(g, therm_temp_sensor_tsense_r());
if (!(therm_temp_sensor_tsense_state_v(readval) &
therm_temp_sensor_tsense_state_valid_v())) {
gk20a_err(dev_from_gk20a(g),
"Attempt to read temperature while sensor is OFF!\n");
err = -EINVAL;
} else if (therm_temp_sensor_tsense_state_v(readval) &
therm_temp_sensor_tsense_state_shadow_v()) {
gk20a_err(dev_from_gk20a(g),
"Reading temperature from SHADOWed sensor!\n");
}
// Convert from F9.5 -> F27.5 -> F24.8.
readval &= therm_temp_sensor_tsense_fixed_point_m();
*val = readval;
return err;
}
DEFINE_SIMPLE_ATTRIBUTE(therm_ctrl_fops, therm_get_internal_sensor_curr_temp, NULL, "%llu\n");
static void gp106_therm_debugfs_init(struct gk20a *g) {
struct gk20a_platform *platform = dev_get_drvdata(g->dev);
struct dentry *dbgentry;
dbgentry = debugfs_create_file(
"temp", S_IRUGO, platform->debugfs, g, &therm_ctrl_fops);
if (!dbgentry)
gk20a_err(dev_from_gk20a(g), "debugfs entry create failed for therm_curr_temp");
}
#endif
void gp106_init_therm_ops(struct gpu_ops *gops) {
#ifdef CONFIG_DEBUG_FS
gops->therm.therm_debugfs_init = gp106_therm_debugfs_init;
#endif
}
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