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https://github.com/Telecominfraproject/OpenCellular.git
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e9883124ff
In the gpio_info struct, we had a irq_handler pointer defined even
though a majority of the GPIOs did not have irq handlers associated. By
removing the irq_handler pointer out of the struct, we can save some
space with some targets saving more than others. (For example, ~260
bytes for samus_pd).
This change also brings about a new define:
GPIO_INT(name, port, pin, flags, signal)
And the existing GPIO macro has had the signal parameter removed since
they were just NULL.
GPIO(name, port, pin, flags)
In each of the gpio.inc files, all the GPIOs with irq handlers must be
defined at the top of the file. This is because their enum values from
gpio_signal are used as the index to the gpio_irq_handlers table.
BUG=chromium:471331
BRANCH=none
TEST=Flashed ec to samus and samus_pd, verified lightbar tap, lid, power
button, keyboard, charging, all still working.
TEST=Moved a GPIO_INT declaration after a GPIO declaration and watched the build
fail.
TEST=make -j BOARD=peppy tests
TEST=make -j BOARD=auron tests
TEST=make -j BOARD=link tests
Change-Id: Id6e261b0a3cd63223ca92f2e96a80c95e85cdefb
Signed-off-by: Aseda Aboagye <aaboagye@google.com>
Reviewed-on: https://chromium-review.googlesource.com/263973
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Aseda Aboagye <aaboagye@chromium.org>
Commit-Queue: Aseda Aboagye <aaboagye@chromium.org>
Trybot-Ready: Aseda Aboagye <aaboagye@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
107 lines
2.8 KiB
C
107 lines
2.8 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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/* Common power interface for all chipsets */
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#ifndef __CROS_EC_POWER_H
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#define __CROS_EC_POWER_H
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#include "common.h"
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#include "gpio.h"
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enum power_state {
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/* Steady states */
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POWER_G3 = 0, /*
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* System is off (not technically all the way into G3,
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* which means totally unpowered...)
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*/
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POWER_S5, /* System is soft-off */
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POWER_S3, /* Suspend; RAM on, processor is asleep */
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POWER_S0, /* System is on */
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/* Transitions */
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POWER_G3S5, /* G3 -> S5 (at system init time) */
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POWER_S5S3, /* S5 -> S3 */
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POWER_S3S0, /* S3 -> S0 */
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POWER_S0S3, /* S0 -> S3 */
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POWER_S3S5, /* S3 -> S5 */
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POWER_S5G3, /* S5 -> G3 */
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};
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/* Information on an power signal */
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struct power_signal_info {
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enum gpio_signal gpio; /* GPIO for signal */
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int level; /* GPIO level which sets signal bit */
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const char *name; /* Name of signal */
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};
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/*
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* Each board must provide its signal list and a corresponding enum
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* power_signal.
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*/
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extern const struct power_signal_info power_signal_list[];
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/* Convert enum power_signal to a mask for signal functions */
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#define POWER_SIGNAL_MASK(signal) (1 << (signal))
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/**
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* Return current input signal state (one or more POWER_SIGNAL_MASK()s).
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*/
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uint32_t power_get_signals(void);
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/**
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* Check for required inputs
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*
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* @param want Mask of signals which must be present (one or more
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* POWER_SIGNAL_MASK()s).
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*
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* @return Non-zero if all present; zero if a required signal is missing.
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*/
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int power_has_signals(uint32_t want);
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/**
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* Wait for power input signals to be present
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*
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* @param want Mask of signals which must be present (one or more
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* POWER_SIGNAL_MASK()s). If want=0, stops waiting for
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* signals.
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* @return EC_SUCCESS when all inputs are present, or ERROR_TIMEOUT if timeout
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* before reaching the desired state.
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*/
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int power_wait_signals(uint32_t want);
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/**
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* Set the low-level power chipset state.
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*
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* @param new_state New chipset state.
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*/
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void power_set_state(enum power_state new_state);
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/**
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* Chipset-specific initialization
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*
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* @return The state the chipset should start in. Usually POWER_G3, but may
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* be POWER_G0 if the chipset was already on and we've jumped to this image.
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*/
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enum power_state power_chipset_init(void);
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/**
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* Chipset-specific state handler
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*
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* @return The updated state for the chipset.
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*/
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enum power_state power_handle_state(enum power_state state);
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/**
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* Interrupt handler for power signal GPIOs.
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*/
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#ifdef HAS_TASK_CHIPSET
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void power_signal_interrupt(enum gpio_signal signal);
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#else
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static inline void power_signal_interrupt(enum gpio_signal signal) { }
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#endif /* !HAS_TASK_CHIPSET */
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#endif /* __CROS_EC_POWER_H */
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