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/* Copyright 2022 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <zephyr/drivers/gpio.h>
#include "common.h"
#include "config.h"
#include "console.h"
#include "driver/ln9310.h"
#include "gpio/gpio_int.h"
#include "hooks.h"
#include "i2c.h"
#include "power/qcom.h"
#include "system.h"
#include "sku.h"
#define CPRINTS(format, args...) cprints(CC_I2C, format, ## args)
#define CPRINTF(format, args...) cprintf(CC_I2C, format, ## args)
/* LN9310 switchcap */
const struct ln9310_config_t ln9310_config = {
.i2c_port = I2C_PORT_POWER,
.i2c_addr_flags = LN9310_I2C_ADDR_0_FLAGS,
};
static void switchcap_init(void)
{
if (board_has_da9313()) {
CPRINTS("Use switchcap: DA9313");
/*
* When the chip in power down mode, it outputs high-Z.
* Set pull-down to avoid floating.
*/
gpio_pin_configure_dt(
GPIO_DT_FROM_NODELABEL(gpio_da9313_gpio0),
GPIO_INPUT | GPIO_PULL_DOWN);
/*
* Configure DA9313 enable, push-pull output. Don't set the
* level here; otherwise, it will override its value and
* shutdown the switchcap when sysjump to RW.
*/
gpio_pin_configure_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on),
GPIO_OUTPUT);
} else if (board_has_ln9310()) {
CPRINTS("Use switchcap: LN9310");
/* Enable interrupt for LN9310 */
gpio_enable_dt_interrupt(
GPIO_INT_FROM_NODELABEL(int_switchcap_pg));
/*
* Configure LN9310 enable, open-drain output. Don't set the
* level here; otherwise, it will override its value and
* shutdown the switchcap when sysjump to RW.
*
* Note that the gpio.inc configures it GPIO_OUT_LOW. When
* sysjump to RW, will output push-pull a short period of
* time. As it outputs LOW, should be fine.
*
* This GPIO changes like:
* (1) EC boots from RO -> high-Z
* (2) GPIO init according to gpio.inc -> push-pull LOW
* (3) This function configures it -> open-drain HIGH
* (4) Power sequence turns on the switchcap -> open-drain LOW
* (5) EC sysjumps to RW
* (6) GPIO init according to gpio.inc -> push-pull LOW
* (7) This function configures it -> open-drain LOW
*/
gpio_pin_configure_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on),
GPIO_OUTPUT | GPIO_OPEN_DRAIN);
/* Only configure the switchcap if not sysjump */
if (!system_jumped_late()) {
/*
* Deassert the enable pin, so the
* switchcap won't be enabled after the switchcap is
* configured from standby mode to switching mode.
*/
gpio_pin_set_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on),
0);
ln9310_init();
}
} else if (board_has_buck_ic()) {
CPRINTS("Use Buck IC");
} else {
CPRINTS("ERROR: No switchcap solution");
}
}
DECLARE_HOOK(HOOK_INIT, switchcap_init, HOOK_PRIO_DEFAULT);
void board_set_switchcap_power(int enable)
{
if (board_has_da9313()) {
gpio_pin_set_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on),
enable);
} else if (board_has_ln9310()) {
gpio_pin_set_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on),
enable);
ln9310_software_enable(enable);
} else if (board_has_buck_ic()) {
gpio_pin_set_dt(
GPIO_DT_FROM_NODELABEL(gpio_vbob_en),
enable);
}
}
int board_is_switchcap_enabled(void)
{
if (board_has_da9313() || board_has_ln9310())
return gpio_pin_get_dt(
GPIO_DT_FROM_NODELABEL(gpio_switchcap_on));
/* Board has buck ic*/
return gpio_pin_get_dt(
GPIO_DT_FROM_NODELABEL(gpio_vbob_en));
}
int board_is_switchcap_power_good(void)
{
if (board_has_da9313())
return gpio_pin_get_dt(
GPIO_DT_FROM_NODELABEL(gpio_da9313_gpio0));
else if (board_has_ln9310())
return ln9310_power_good();
/* Board has buck ic no way to check POWER GOOD */
return 1;
}
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