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kirby: Set LED color according to charging status

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This sets LED to yellow for charging and battery-assist mode, green for
full and near-full, and red for error.

BUG=chrome-os-partner:22056
TEST=Unplug battery and see LED go red after 30 seconds
TEST=Charge battery and see yellow LED
TEST=See green LED when battery is charged
TEST=Unplug AC and see LED turned off
BRANCH=None

Change-Id: I7a512f3b0e6cbdf760c0cbd49cd63c26dc9f8539
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/168182
This commit is contained in:
Vic Yang
2013-09-05 11:14:47 +08:00
committed by chrome-internal-fetch
parent c2e8372b41
commit c0c90c6f18
1 changed files with 41 additions and 0 deletions
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41
common/led_kirby.c
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@@ -5,12 +5,20 @@
* Kirby LED driver.
*/
#include "charge_state.h"
#include "common.h"
#include "console.h"
#include "extpower.h"
#include "gpio.h"
#include "hooks.h"
#include "pwm.h"
#include "util.h"
/* Brightness of each color. Range = 0 - 100. */
#define BRIGHTNESS_RED 50
#define BRIGHTNESS_GREEN 25
#define BRIGHTNESS_YELLOW 50
void led_set_color(uint8_t red, uint8_t green, uint8_t yellow)
{
if (!yellow)
@@ -38,6 +46,39 @@ void led_set_color(uint8_t red, uint8_t green, uint8_t yellow)
}
}
static void led_update_color(void)
{
enum power_state state = charge_get_state();
/* check ac. no ac -> off */
if (!extpower_is_present()) {
led_set_color(0, 0, 0);
return;
}
switch (state) {
case PWR_STATE_CHARGE:
led_set_color(0, 0, BRIGHTNESS_YELLOW);
break;
case PWR_STATE_IDLE:
case PWR_STATE_CHARGE_NEAR_FULL:
led_set_color(0, BRIGHTNESS_GREEN, 0);
break;
case PWR_STATE_ERROR:
led_set_color(BRIGHTNESS_RED, 0, 0);
break;
case PWR_STATE_INIT:
case PWR_STATE_UNCHANGE:
case PWR_STATE_IDLE0:
case PWR_STATE_REINIT:
case PWR_STATE_DISCHARGE:
break;
}
}
DECLARE_HOOK(HOOK_INIT, led_update_color, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_AC_CHANGE, led_update_color, HOOK_PRIO_DEFAULT);
DECLARE_HOOK(HOOK_CHARGE_STATE_CHANGE, led_update_color, HOOK_PRIO_DEFAULT);
/*****************************************************************************/
/* Console commands */