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c5b90d7e77
First implementation of a low power idle task for the LM4 chip. The low power mode is selected by defining CONFIG_LOW_POWER_IDLE in a board.h file. This commit turns it on for Peppy, Slippy, and Falco only because those are the only boards tested. When using the low power idle task, the chip goes in to deep sleep when it can. Deep sleep disables clocks to most peripherals and puts the onboard flash and RAM into a low power mode. The chip is woken out of deep sleep using the RTC in the hibernate module. Increased the idle task stack size to handle more involved idle task. In board.c, the array of GPIO info can be used to select which GPIO points can wake up the EC from deep sleep. Currenlty selected are the power button, lid open, AC present, PCH_SLP_S3, and PCH_SLP_S5. Additionally the port with the KB scan row GPIO point is also enabled to wake up the EC from deep sleep. Signed-off-by: Alec Berg <alecaberg@chromium.org> BUG=None BRANCH=none TEST=Passes all unit tests. Runs on slippy, peppy, and falco with no noticeable side affects. Verified that the power consumed by the EC is lower when in S3, S5 and G3 by scoping the sense resistor powering the chip. Change-Id: I83fa9a159a4b79201b99f2c32678dc4fc8921726 Reviewed-on: https://chromium-review.googlesource.com/172183 Reviewed-by: Vincent Palatin <vpalatin@chromium.org> Reviewed-by: Randall Spangler <rspangler@chromium.org> Commit-Queue: Alec Berg <alecaberg@chromium.org> Tested-by: Alec Berg <alecaberg@chromium.org>
129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/* Copyright (c) 2012 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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/* Debug console for Chrome EC */
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#ifndef __CROS_EC_CONSOLE_H
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#define __CROS_EC_CONSOLE_H
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#include "common.h"
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/* Console command; used by DECLARE_CONSOLE_COMMAND macro. */
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struct console_command {
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/* Command name. Case-insensitive. */
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const char *name;
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/* Handler for the command. argv[0] will be the command name. */
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int (*handler)(int argc, char **argv);
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#ifdef CONFIG_CONSOLE_CMDHELP
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/* Description of args */
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const char *argdesc;
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/* Short help for command */
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const char *shorthelp;
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#endif
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};
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/* Console channels */
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enum console_channel {
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CC_COMMAND = 0, /* Console command (interactive I/O). Use this only
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* inside a console command routine. */
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CC_CHARGER,
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CC_CHIPSET,
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CC_CLOCK,
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CC_DMA,
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CC_EVENTS,
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CC_GPIO,
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CC_HOSTCMD,
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CC_I2C,
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CC_KEYBOARD,
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CC_KEYSCAN,
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CC_LIGHTBAR,
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CC_LPC,
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CC_PORT80,
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CC_PWM,
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CC_SPI,
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CC_SWITCH,
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CC_SYSTEM,
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CC_TASK,
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CC_THERMAL,
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CC_USBCHARGE,
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CC_VBOOT,
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CC_HOOK,
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/* Channel count; not itself a channel */
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CC_CHANNEL_COUNT
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};
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/* Mask in channel_mask for a particular channel */
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#define CC_MASK(channel) (1UL << (channel))
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/* Mask to use to enable all channels */
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#define CC_ALL 0xffffffffUL
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/**
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* Put a string to the console channel.
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*
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* @param channel Output chanel
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* @param outstr String to write
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*
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* @return non-zero if output was truncated.
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*/
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int cputs(enum console_channel channel, const char *outstr);
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/**
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* Print formatted output to the console channel.
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*
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* @param channel Output chanel
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* @param format Format string; see printf.h for valid formatting codes
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*
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* @return non-zero if output was truncated.
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*/
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int cprintf(enum console_channel channel, const char *format, ...);
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/**
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* Flush the console output for all channels.
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*/
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void cflush(void);
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/* Convenience macros for printing to the command channel.
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*
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* Modules may define similar macros in their .c files for their own use; it is
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* recommended those module-specific macros be named CPUTS and CPRINTF. */
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#define ccputs(outstr) cputs(CC_COMMAND, outstr)
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/* gcc allows variable arg lists in macros; see
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* http://gcc.gnu.org/onlinedocs/gcc/Variadic-Macros.html */
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#define ccprintf(format, args...) cprintf(CC_COMMAND, format, ## args)
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/**
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* Called by UART when a line of input is pending.
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*/
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void console_has_input(void);
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/**
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* Register a console command handler.
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*
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* @param name Command name; must not be the beginning of another
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* existing command name. Note this is NOT in quotes
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* so it can be concatenated to form a struct name.
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* @param routine Command handling routine, of the form
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* int handler(int argc, char **argv)
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* @param argdesc String describing arguments to command; NULL if none.
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* @param shorthelp String with one-line description of command.
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* @param longhelp String with long description of command.
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*/
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#ifdef CONFIG_CONSOLE_CMDHELP
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#define DECLARE_CONSOLE_COMMAND(name, routine, argdesc, shorthelp, longhelp) \
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static const char __con_cmd_label_##name[] = #name; \
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const struct console_command __con_cmd_##name \
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__attribute__((section(".rodata.cmds." #name))) \
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= {__con_cmd_label_##name, routine, argdesc, shorthelp}
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#else
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#define DECLARE_CONSOLE_COMMAND(name, routine, argdesc, shorthelp, longhelp) \
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static const char __con_cmd_label_##name[] = #name; \
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const struct console_command __con_cmd_##name \
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__attribute__((section(".rodata.cmds." #name))) \
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= {__con_cmd_label_##name, routine}
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#endif
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#endif /* __CROS_EC_CONSOLE_H */
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