Files
system76-embedded-controller/src/board/system76/common/dgpu.c
Tim Crawford 99af8a35f5 Use explicitly sized types from stdint
Replace bare int types with stdint types. This was done with:

    grep -rwl 'int' src/ | xargs sed -i 's/\<int\>/int16_t/g'
    grep -rwl 'unsigned long' src/ | xargs sed -i 's/\<unsigned long\>/uint32_t/g'
    grep -rwl 'unsigned char' src/ | xargs sed -i 's/\<unsigned char\>/uint8_t/g'

Then reverted for *main(), putchar(), and getchar().

The Arduino declarations for parallel_main() were also corrected to
match their definitions.

SDCC does *not* generate the same code in all instances, due to `int`
being treated different than `short int`.

Signed-off-by: Tim Crawford <tcrawford@system76.com>
2021-08-02 07:46:44 -06:00

107 lines
2.5 KiB
C

// SPDX-License-Identifier: GPL-3.0-only
#include <board/dgpu.h>
#include <board/fan.h>
#if HAVE_DGPU
#include <board/gpio.h>
#include <board/peci.h>
#include <board/power.h>
#include <common/debug.h>
#include <common/macro.h>
#include <ec/i2c.h>
#include <ec/pwm.h>
// Fan speed is the lowest requested over HEATUP seconds
#ifndef BOARD_DGPU_HEATUP
#define BOARD_DGPU_HEATUP 4
#endif
static uint8_t FAN_HEATUP[BOARD_DGPU_HEATUP] = { 0 };
// Fan speed is the highest HEATUP speed over COOLDOWN seconds
#ifndef BOARD_DGPU_COOLDOWN
#define BOARD_DGPU_COOLDOWN 10
#endif
static uint8_t FAN_COOLDOWN[BOARD_DGPU_COOLDOWN] = { 0 };
int16_t dgpu_temp = 0;
#define DGPU_TEMP(X) ((int16_t)(X))
#define FAN_POINT(T, D) { .temp = DGPU_TEMP(T), .duty = PWM_DUTY(D) }
// Fan curve with temperature in degrees C, duty cycle in percent
static struct FanPoint __code FAN_POINTS[] = {
#ifdef BOARD_DGPU_FAN_POINTS
BOARD_DGPU_FAN_POINTS
#else
FAN_POINT(70, 40),
FAN_POINT(75, 50),
FAN_POINT(80, 60),
FAN_POINT(85, 65),
FAN_POINT(90, 65)
#endif
};
static struct Fan __code FAN = {
.points = FAN_POINTS,
.points_size = ARRAY_SIZE(FAN_POINTS),
.heatup = FAN_HEATUP,
.heatup_size = ARRAY_SIZE(FAN_HEATUP),
.cooldown = FAN_COOLDOWN,
.cooldown_size = ARRAY_SIZE(FAN_COOLDOWN),
.interpolate = SMOOTH_FANS != 0,
};
void dgpu_init(void) {
// Set up for i2c usage
i2c_reset(&I2C_DGPU, true);
}
uint8_t dgpu_get_fan_duty(void) {
uint8_t duty;
if (power_state == POWER_STATE_S0 && gpio_get(&DGPU_PWR_EN) && !gpio_get(&GC6_FB_EN)) {
// Use I2CS if in S0 state
int8_t rlts;
int16_t res = i2c_get(&I2C_DGPU, 0x4F, 0x00, &rlts, 1);
if (res == 1) {
dgpu_temp = (int16_t)rlts;
duty = fan_duty(&FAN, dgpu_temp);
} else {
DEBUG("DGPU temp error: %d\n", res);
// Default to 50% if there is an error
dgpu_temp = 0;
duty = PWM_DUTY(50);
}
} else {
// Turn fan off if not in S0 state or GPU power not on
dgpu_temp = 0;
duty = PWM_DUTY(0);
}
if (peci_on && fan_max) {
// Override duty if fans are manually set to maximum
duty = PWM_DUTY(100);
} else {
// Apply heatup and cooldown filters to duty
duty = fan_heatup(&FAN, duty);
duty = fan_cooldown(&FAN, duty);
}
TRACE("DGPU temp=%d\n", dgpu_temp);
return duty;
}
#else
void dgpu_init(void) {}
uint8_t dgpu_get_fan_duty(void) {
return PWM_DUTY(0);
}
#endif // HAVE_DGPU