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Battery LED control for Slippy

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BUG=chrome-os-partner:21180
BRANCH=slippy
TEST=Manual. Verify LED is amber while charging, blue when
charged, and off when external power disconnected.

Signed-off-by: Dave Parker <dparker@chromium.org>

Change-Id: If80bb9b0c70951d257621a2fe3ef20cd8749a033
Reviewed-on: https://gerrit.chromium.org/gerrit/62848
Tested-by: Dave Parker <dparker@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Dave Parker <dparker@chromium.org>
This commit is contained in:
Dave Parker
2013-07-19 19:45:06 -07:00
committed by ChromeBot
parent 935d761a39
commit 46af344b87
4 changed files with 96 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
board/slippy/board.h
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@@ -29,6 +29,7 @@
#ifdef HAS_TASK_KEYPROTO
#define CONFIG_KEYBOARD_PROTOCOL_8042
#endif
#define CONFIG_LED_SLIPPY
#define CONFIG_LID_SWITCH
#define CONFIG_LPC
#define CONFIG_PECI
@@ -136,8 +137,8 @@ enum gpio_signal {
GPIO_PCH_RTCRST_L, /* Not supposed to be here */
GPIO_PCH_SRTCRST_L, /* Not supposed to be here */
BAT_LED0_L, /* Battery charging LED - Blue */
BAT_LED1_L, /* Battery charging LED - Amber */
GPIO_BAT_LED0_L, /* Battery charging LED - Blue */
GPIO_BAT_LED1_L, /* Battery charging LED - Amber */
/* Number of GPIOs; not an actual GPIO */
GPIO_COUNT

1
common/build.mk
View File

@@ -41,6 +41,7 @@ common-$(CONFIG_KEYBOARD_TEST)+=keyboard_test.o
common-$(CONFIG_LED_DRIVER_LP5562)+=led_driver_lp5562.o led_lp5562.o
common-$(CONFIG_LED_FALCO)+=led_falco.o
common-$(CONFIG_LED_PEPPY)+=led_peppy.o
common-$(CONFIG_LED_SLIPPY)+=led_slippy.o
common-$(CONFIG_LID_SWITCH)+=lid_switch.o
common-$(CONFIG_LPC)+=port80.o
common-$(CONFIG_ONEWIRE_LED)+=onewire_led.o

91
common/led_slippy.c Normal file
View File

@@ -0,0 +1,91 @@
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Power and battery LED control for Slippy.
*/
#include "battery.h"
#include "charge_state.h"
#include "chipset.h"
#include "gpio.h"
#include "hooks.h"
#include "lid_switch.h"
#define LED_TOTAL_TICKS 16
#define LED_ON_TICKS 4
enum led_color {
LED_OFF = 0,
LED_BLUE,
LED_AMBER,
LED_COLOR_COUNT /* Number of colors, not a color itself */
};
static int led_set_color(enum led_color color, enum gpio_signal gpio_led_blue_l,
enum gpio_signal gpio_led_amber_l)
{
switch (color) {
case LED_OFF:
gpio_set_level(gpio_led_blue_l, 1);
gpio_set_level(gpio_led_amber_l, 1);
break;
case LED_BLUE:
gpio_set_level(gpio_led_blue_l, 0);
gpio_set_level(gpio_led_amber_l, 1);
break;
case LED_AMBER:
gpio_set_level(gpio_led_blue_l, 1);
gpio_set_level(gpio_led_amber_l, 0);
break;
default:
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
static int bat_led_set_color(enum led_color color)
{
return led_set_color(color, GPIO_BAT_LED0_L, GPIO_BAT_LED1_L);
}
/* Called by hook task every 250mSec */
static void led_tick(void)
{
static int ticks;
uint32_t chflags = charge_get_flags();
/* Battery LED is on the c-panel */
if (!lid_is_open()) {
bat_led_set_color(LED_OFF);
return;
}
ticks++;
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
bat_led_set_color(LED_AMBER);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
bat_led_set_color(LED_BLUE);
break;
case PWR_STATE_DISCHARGE:
bat_led_set_color(LED_OFF);
break;
case PWR_STATE_ERROR:
bat_led_set_color((ticks & 0x2) ? LED_AMBER : LED_OFF);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE state. */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
bat_led_set_color((ticks & 0x4) ? LED_BLUE : LED_OFF);
else
bat_led_set_color(LED_BLUE);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);

1
include/config.h
View File

@@ -105,6 +105,7 @@ CONFIG_KEYBOARD_SUPPRESS_NOISE
CONFIG_LED_DRIVER_LP5562
CONFIG_LED_FALCO
CONFIG_LED_PEPPY
CONFIG_LED_SLIPPY
CONFIG_LID_SWITCH
CONFIG_LOW_POWER_IDLE
CONFIG_LPC