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94acd01e0c
In order to wake the chips from STOP/SLEEP mode with a touch, we need to put the two chips in correct state before going into STOP/SLEEP mode. Also, when one of the chips wakes up, it needs to wake the other chip with GPIO interrupt. This CL implements the necessary methods and also adds a sample routine that put the chips in STOP mode and wait for a touch using the implemented methods. BUG=None TEST=Build and boot. Touch the panel and see the response in console. BRANCH=None Change-Id: Ia5f7df8b550ee2459bcae1840f8a2717c8d947ce Signed-off-by: Vic Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/204482 Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/* Copyright (c) 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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/* Keyborg board configuration */
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#ifndef __BOARD_H
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#define __BOARD_H
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/* 48 MHz SYSCLK clock frequency */
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#define CPU_CLOCK 48000000
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/* Optional features */
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#define CONFIG_DEBUG_PRINTF
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#define CONFIG_KEYBORG_FAST_SCAN
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#define CONFIG_KEYBORG_SPI_FULL_PACKET
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#undef CONFIG_ADC
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#undef CONFIG_COMMON_GPIO
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#undef CONFIG_COMMON_PANIC_OUTPUT
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#undef CONFIG_COMMON_RUNTIME
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#undef CONFIG_COMMON_TIMER
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#undef CONFIG_CONSOLE_CMDHELP
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#undef CONFIG_DEBUG_EXCEPTIONS
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#undef CONFIG_DEBUG_STACK_OVERFLOW
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#undef CONFIG_FLASH
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#undef CONFIG_FMAP
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#undef CONFIG_LID_SWITCH
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#undef CONFIG_TASK_PROFILING
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#undef CONFIG_WATCHDOG_HELP
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/* How the touch data is stored and printed */
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#define CONFIG_ENCODE_SEGMENT
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#undef CONFIG_ENCODE_RAW
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#undef CONFIG_ENCODE_DUMP_PYTHON
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#ifndef __ASSEMBLER__
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enum gpio_signal;
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/* Initialize all useful registers */
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void hardware_init(void);
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/* Re-initialize clock */
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void hardware_clock_init(void);
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/* On the master, reboot both chips. On the slave, reboot itself. */
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void system_reboot(void);
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#endif /* !__ASSEMBLER__ */
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#endif /* __BOARD_H */
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