| /* Copyright 2025 The ChromiumOS Authors |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "adc.h" |
| #include "common.h" |
| #include "gpio.h" |
| #include "power/qcom.h" |
| |
| #define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ##args) |
| |
| /* |
| * Set the power good threshold for VPH_PWR(mV). |
| * |
| * The VPH_PWR "power good" signal was measured and observed to be stable at |
| * approximately 2.6V. Consequently, the power good threshold has been |
| * configured to 2.0V |
| */ |
| #define VPH_PWR_THRESHOLD 2000 |
| |
| void board_set_switchcap_power(int enable) |
| { |
| gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_ec_en_vph_pwr_1a), enable); |
| } |
| |
| int board_is_switchcap_enabled(void) |
| { |
| return gpio_pin_get_dt(GPIO_DT_FROM_NODELABEL(gpio_ec_en_vph_pwr_1a)); |
| } |
| |
| int board_is_switchcap_power_good(void) |
| { |
| int adc_value = adc_read_channel(ADC_VPH_PWR); |
| CPRINTS("switchcap VPH power good ADC value=%d", adc_value); |
| return adc_value > VPH_PWR_THRESHOLD; |
| } |
