mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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34b94121c7
These boards are unloved and unsupported. They'll never grow up to be laptops, and hardware is increasingly hard to come by. Comparable functionality is available in the other, more-loved boards. Removing these boards speeds up util/make_all.sh by 40%. (If you're not running that before every upload, you should be...) BUG=chrome-os-partner:24062 BRANCH=none TEST=build all remaining platforms and pass unit tests Change-Id: I4d8a49e4d52d7393471f1b1cbef059c8db4a4f77 Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/177373
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
/* Copyright (c) 2013 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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/* External power detection for snow */
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#include "common.h"
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#include "extpower.h"
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#include "gpio.h"
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#include "pmu_tpschrome.h"
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#include "task.h"
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int extpower_is_present(void)
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{
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/*
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* Detect AC state using combined gpio pins
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*
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* On snow, there's no single gpio signal to detect AC.
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* GPIO_AC_PWRBTN_L provides AC on and PWRBTN release.
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* GPIO_KB_PWR_ON_L provides PWRBTN release.
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*
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* When AC plugged, both GPIOs will be high.
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*
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* One drawback of this detection is, when press-and-hold power
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* button. AC state will be unknown. This function will fallback
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* to PMU VACG.
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*/
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int ac_good = 1, battery_good;
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if (gpio_get_level(GPIO_KB_PWR_ON_L))
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return gpio_get_level(GPIO_AC_PWRBTN_L);
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/* Check PMU VACG */
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if (!in_interrupt_context())
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pmu_get_power_source(&ac_good, &battery_good);
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/*
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* Charging task only interacts with AP in discharging state. So
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* return 1 when AC status can not be detected by GPIO or VACG.
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*/
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return ac_good;
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}
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/* TODO(crosbug.com/p/23810): host events and hook notifications */
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