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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.
*/
/* Herobrine chipset-specific configuration */
#include "charger.h"
#include "common.h"
#include "console.h"
#include "battery.h"
#include "gpio.h"
#include "hooks.h"
#include "timer.h"
#include "usb_pd.h"
#include "board_chipset.h"
#define CPRINTS(format, args...) cprints(CC_HOOK, format, ##args)
#define CPRINTF(format, args...) cprintf(CC_HOOK, format, ##args)
/*
* A window of PD negotiation. It starts from the Type-C state reaching
* Attached.SNK, and ends when the PD contract is created. The VBUS may be
* raised anytime in this window.
*
* The current implementation is the worst case scenario: every message the PD
* negotiation is received at the last moment before timeout. More extra time
* is added to compensate the delay internally, like the decision of the DPM.
*
* TODO(waihong): Cancel this timer when the PD contract is negotiated.
*/
#define PD_READY_TIMEOUT \
(PD_T_SINK_WAIT_CAP + PD_T_SENDER_RESPONSE + PD_T_SINK_TRANSITION + \
20 * MSEC)
#define PD_READY_POLL_DELAY (10 * MSEC)
static timestamp_t pd_ready_timeout;
static bool pp5000_inited;
__test_only void reset_pp5000_inited(void)
{
pp5000_inited = false;
}
/* Called on USB PD connected */
static void board_usb_pd_connect(void)
{
int soc = -1;
/* First boot, battery unattached or low SOC */
if (!pp5000_inited &&
((battery_state_of_charge_abs(&soc) != EC_SUCCESS ||
soc < charger_get_min_bat_pct_for_power_on()))) {
pd_ready_timeout = get_time();
pd_ready_timeout.val += PD_READY_TIMEOUT;
}
}
DECLARE_HOOK(HOOK_USB_PD_CONNECT, board_usb_pd_connect, HOOK_PRIO_DEFAULT);
static void wait_pd_ready(void)
{
CPRINTS("Wait PD negotiated VBUS transition %u",
pd_ready_timeout.le.lo);
while (pd_ready_timeout.val && get_time().val < pd_ready_timeout.val)
usleep(PD_READY_POLL_DELAY);
}
/* Called on AP S5 -> S3 transition */
static void board_chipset_pre_init(void)
{
if (!pp5000_inited) {
if (pd_ready_timeout.val) {
wait_pd_ready();
}
CPRINTS("Enable 5V rail");
gpio_pin_set_dt(GPIO_DT_FROM_NODELABEL(gpio_en_pp5000_s5), 1);
pp5000_inited = true;
}
}
DECLARE_HOOK(HOOK_CHIPSET_PRE_INIT, board_chipset_pre_init, HOOK_PRIO_DEFAULT);
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