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glados: Implement LED functionality on EC

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Implement LED control for glados for both red and green LED.

BUG=chrome-os-partner:40848
BRANCH=none
TEST=Manually tested on glados with following commands:
     ectool led battery red
     ectool led battery green
     ectool led battery off

Change-Id: I1b4f8c8c8f26779a11185ea8bbc6536d1d7f97b1
Signed-off-by: Mike Hsieh <mike.m.hsieh@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/289439
Reviewed-by: Shawn N <shawnn@chromium.org>
This commit is contained in:
Mike Hsieh
2015-08-03 19:15:41 +08:00
committed by ChromeOS Commit Bot
parent 6cb2008348
commit 77f68f204f
2 changed files with 140 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
board/glados/board.h
View File

@@ -88,7 +88,9 @@
#define WIRELESS_GPIO_WLAN GPIO_WLAN_OFF_L
#define WIRELESS_GPIO_WLAN_POWER GPIO_PP3300_WLAN_EN
/* LED signals */
#define GPIO_BAT_LED_RED GPIO_CHARGE_LED_1
#define GPIO_BAT_LED_GREEN GPIO_CHARGE_LED_2
/* I2C ports */
#ifdef GLADOS_BOARD_V1

139
board/glados/led.c
View File

@@ -15,16 +15,151 @@
#include "led_common.h"
#include "util.h"
#define BAT_LED_ON 1
#define BAT_LED_OFF 0
#define CRITICAL_LOW_BATTERY_PERCENTAGE 3
#define LOW_BATTERY_PERCENTAGE 10
#define LED_TOTAL_4SECS_TICKS 16
#define LED_TOTAL_2SECS_TICKS 8
#define LED_ON_1SEC_TICKS 4
#define LED_ON_2SECS_TICKS 8
const enum ec_led_id supported_led_ids[] = {
EC_LED_ID_POWER_LED, EC_LED_ID_BATTERY_LED};
EC_LED_ID_BATTERY_LED};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
enum led_color {
LED_OFF = 0,
LED_RED,
LED_AMBER,
LED_GREEN,
LED_COLOR_COUNT /* Number of colors, not a color itself */
};
static int bat_led_set_color(enum led_color color)
{
switch (color) {
case LED_OFF:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
break;
case LED_RED:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF);
break;
case LED_AMBER:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
break;
case LED_GREEN:
gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF);
gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON);
break;
default:
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
brightness_range[EC_LED_COLOR_RED] = 1;
brightness_range[EC_LED_COLOR_GREEN] = 1;
}
static int glados_led_set_color_battery(enum led_color color)
{
return bat_led_set_color(color);
}
static int glados_led_set_color(enum ec_led_id led_id, enum led_color color)
{
int rv;
led_auto_control(led_id, 0);
switch (led_id) {
case EC_LED_ID_BATTERY_LED:
rv = glados_led_set_color_battery(color);
break;
default:
return EC_ERROR_UNKNOWN;
}
return rv;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
if (brightness[EC_LED_COLOR_RED] != 0 &&
brightness[EC_LED_COLOR_GREEN] != 0)
glados_led_set_color(led_id, LED_AMBER);
else if (brightness[EC_LED_COLOR_RED] != 0)
glados_led_set_color(led_id, LED_RED);
else if (brightness[EC_LED_COLOR_GREEN] != 0)
glados_led_set_color(led_id, LED_GREEN);
else
glados_led_set_color(led_id, LED_OFF);
return EC_SUCCESS;
}
static void glados_led_set_battery(void)
{
static int battery_ticks;
uint32_t chflags = charge_get_flags();
battery_ticks++;
/* BAT LED behavior:
* Same as the chromeos spec
* Green/Amber for CHARGE_FLAG_FORCE_IDLE
*/
switch (charge_get_state()) {
case PWR_STATE_CHARGE:
glados_led_set_color_battery(LED_AMBER);
break;
case PWR_STATE_DISCHARGE:
/* Less than 3%, blink one second every two second */
if (charge_get_percent() < CRITICAL_LOW_BATTERY_PERCENTAGE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
/* Less than 10%, blink one second every four seconds */
else if (charge_get_percent() < LOW_BATTERY_PERCENTAGE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF);
else
glados_led_set_color_battery(LED_OFF);
break;
case PWR_STATE_ERROR:
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_2SECS_TICKS <
LED_ON_1SEC_TICKS) ? LED_RED : LED_OFF);
break;
case PWR_STATE_CHARGE_NEAR_FULL:
glados_led_set_color_battery(LED_GREEN);
break;
case PWR_STATE_IDLE: /* External power connected in IDLE */
if (chflags & CHARGE_FLAG_FORCE_IDLE)
glados_led_set_color_battery(
(battery_ticks % LED_TOTAL_4SECS_TICKS <
LED_ON_2SECS_TICKS) ? LED_GREEN : LED_AMBER);
else
glados_led_set_color_battery(LED_GREEN);
break;
default:
/* Other states don't alter LED behavior */
break;
}
}
/** * Called by hook task every 1 sec */
static void led_second(void)
{
if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED))
glados_led_set_battery();
}
DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT);