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/* Copyright 2022 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Guybrush board-specific configuration */
#include "console.h"
#include "fan.h"
#include "thermal.h"
#include "util.h"
/* Console output macros */
#define CPUTS(outstr) cputs(CC_THERMAL, outstr)
#define CPRINTS(format, args...) cprints(CC_THERMAL, format, ##args)
const struct fan_conf fan_conf_0 = {
.flags = FAN_USE_RPM_MODE,
.ch = MFT_CH_0, /* Use MFT id to control fan */
.pgood_gpio = GPIO_S0_PGOOD,
.enable_gpio = -1,
};
const struct fan_rpm fan_rpm_0 = {
.rpm_min = 3000,
.rpm_start = 3000,
.rpm_max = 6000,
};
const struct fan_t fans[] = {
[FAN_CH_0] = {
.conf = &fan_conf_0,
.rpm = &fan_rpm_0,
},
};
BUILD_ASSERT(ARRAY_SIZE(fans) == FAN_CH_COUNT);
struct ec_thermal_config thermal_params[TEMP_SENSOR_COUNT] = {
[TEMP_SENSOR_SOC] = {
.temp_host = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(80),
[EC_TEMP_THRESH_HALT] = C_TO_K(85),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(75),
},
.temp_fan_off = C_TO_K(27),
.temp_fan_max = C_TO_K(80),
},
[TEMP_SENSOR_CHARGER] = {
.temp_host = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(80),
[EC_TEMP_THRESH_HALT] = C_TO_K(85),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(75),
},
.temp_fan_off = 0,
.temp_fan_max = 0,
},
[TEMP_SENSOR_MEMORY] = {
.temp_host = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(80),
[EC_TEMP_THRESH_HALT] = C_TO_K(85),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(75),
},
.temp_fan_off = 0,
.temp_fan_max = 0,
},
[TEMP_SENSOR_CPU] = {
.temp_host = {
[EC_TEMP_THRESH_WARN] = C_TO_K(100),
[EC_TEMP_THRESH_HIGH] = C_TO_K(105),
[EC_TEMP_THRESH_HALT] = C_TO_K(108),
},
.temp_host_release = {
[EC_TEMP_THRESH_HIGH] = C_TO_K(85),
},
.temp_fan_off = 0,
.temp_fan_max = 0,
},
/*
* Note: Leave ambient entries at 0, both as it does not represent a
* hotspot and as not all boards have this sensor
*/
};
BUILD_ASSERT(ARRAY_SIZE(thermal_params) == TEMP_SENSOR_COUNT);
struct fan_step {
int on;
int off;
int rpm;
};
static const struct fan_step fan_table[] = {
{ .on = 0, .off = 1, .rpm = 0 },
{ .on = 6, .off = 2, .rpm = 3000 },
{ .on = 28, .off = 15, .rpm = 3300 },
{ .on = 34, .off = 26, .rpm = 3700 },
{ .on = 39, .off = 32, .rpm = 4000 },
{ .on = 45, .off = 38, .rpm = 4300 },
{ .on = 51, .off = 43, .rpm = 4700 },
{ .on = 74, .off = 62, .rpm = 5400 },
};
#define NUM_FAN_LEVELS ARRAY_SIZE(fan_table)
int fan_percent_to_rpm(int fan, int pct)
{
static int current_level;
static int previous_pct;
int i;
/*
* Compare the pct and previous pct, we have the three paths :
* 1. decreasing path. (check the off point)
* 2. increasing path. (check the on point)
* 3. invariant path. (return the current RPM)
*/
if (pct < previous_pct) {
for (i = current_level; i >= 0; i--) {
if (pct <= fan_table[i].off)
current_level = i - 1;
else
break;
}
} else if (pct > previous_pct) {
for (i = current_level + 1; i < NUM_FAN_LEVELS; i++) {
if (pct >= fan_table[i].on)
current_level = i;
else
break;
}
}
if (current_level < 0)
current_level = 0;
previous_pct = pct;
if (fan_table[current_level].rpm != fan_get_rpm_target(FAN_CH(fan)))
CPRINTS("Setting fan RPM to %d", fan_table[current_level].rpm);
return fan_table[current_level].rpm;
}
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