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33142ba9ac
For the transmitter to clear CHARGE_DONE, charging must be enabled. Therefore, we should always enable charging when the lid is just closed. BRANCH=ryu BUG=None TEST=Test on Ryu p1. Signed-off-by: Vic Yang <victoryang@chromium.org> Change-Id: I44f3d7c9e413a63be66ccf9695fea5411b2067b6 Reviewed-on: https://chromium-review.googlesource.com/231121 Reviewed-by: Randall Spangler <rspangler@chromium.org>
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* Copyright 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Inductive charging control */
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#include "common.h"
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#include "gpio.h"
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#include "hooks.h"
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#include "lid_switch.h"
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#include "timer.h"
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void inductive_charging_interrupt(enum gpio_signal signal)
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{
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int charger_enabled = gpio_get_level(GPIO_BASE_CHG_VDD_EN);
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int charge_done = gpio_get_level(GPIO_CHARGE_DONE);
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/* Always try to charge if the lid is just closed */
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if (signal == GPIO_LID_OPEN)
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charge_done = 0;
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if (!charger_enabled || charge_done)
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gpio_set_level(GPIO_CHARGE_EN, 0);
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else
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gpio_set_level(GPIO_CHARGE_EN, 1);
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}
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static void inductive_charging_deferred_update(void)
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{
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int lid_open = lid_is_open();
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gpio_set_level(GPIO_BASE_CHG_VDD_EN, !lid_open);
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inductive_charging_interrupt(GPIO_LID_OPEN);
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}
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DECLARE_DEFERRED(inductive_charging_deferred_update);
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static void inductive_charging_lid_update(void)
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{
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/*
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* When the lid close signal changes, the coils might still be
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* unaligned. Delay here to give the coils time to align before
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* we try to clear CHARGE_DONE.
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*/
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hook_call_deferred(inductive_charging_deferred_update, 5 * SECOND);
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}
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DECLARE_HOOK(HOOK_LID_CHANGE, inductive_charging_lid_update, HOOK_PRIO_DEFAULT);
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static void inductive_charging_init(void)
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{
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gpio_enable_interrupt(GPIO_CHARGE_DONE);
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inductive_charging_lid_update();
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}
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DECLARE_HOOK(HOOK_INIT, inductive_charging_init, HOOK_PRIO_DEFAULT);
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