1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/* Copyright (c) 2015 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.
*
* Battery LED control for Ninja
*/
#include "charge_state.h"
#include "chipset.h"
#include "gpio.h"
#include "hooks.h"
#include "led_common.h"
#include "pwm.h"
#include "util.h"
const enum ec_led_id supported_led_ids[] = {EC_LED_ID_BATTERY_LED};
const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids);
enum led_color {
LED_OFF = 0,
LED_RED,
LED_ORANGE,
LED_YELLOW,
LED_GREEN,
/* Number of colors, not a color itself */
LED_COLOR_COUNT
};
/* Brightness vs. color, for {red, green} LEDs */
static const uint8_t color_brightness[LED_COLOR_COUNT][2] = {
{0, 0},
{100, 0},
{30, 45},
{20, 60},
{0, 100},
};
/**
* Set LED color
*
* @param color Enumerated color value
*/
static void set_color(enum led_color color)
{
pwm_set_duty(PWM_CH_LED_RED, color_brightness[color][0]);
pwm_set_duty(PWM_CH_LED_GREEN, color_brightness[color][1]);
}
void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range)
{
brightness_range[EC_LED_COLOR_RED] = 100;
brightness_range[EC_LED_COLOR_GREEN] = 100;
}
int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness)
{
pwm_set_duty(PWM_CH_LED_RED, brightness[EC_LED_COLOR_RED]);
pwm_set_duty(PWM_CH_LED_GREEN, brightness[EC_LED_COLOR_GREEN]);
return EC_SUCCESS;
}
static void led_init(void)
{
/* Configure GPIOs */
gpio_config_module(MODULE_PWM_LED, 1);
/*
* Enable PWMs and set to 0% duty cycle. If they're disabled, the LM4
* seems to ground the pins instead of letting them float.
*/
pwm_enable(PWM_CH_LED_RED, 1);
pwm_enable(PWM_CH_LED_GREEN, 1);
set_color(LED_OFF);
}
DECLARE_HOOK(HOOK_INIT, led_init, HOOK_PRIO_DEFAULT);
/**
* Called by hook task every 250 ms
*/
static void led_tick(void)
{
}
DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT);
|