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Diffstat (limited to 'board/brask/led.c')
-rw-r--r-- | board/brask/led.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/board/brask/led.c b/board/brask/led.c new file mode 100644 index 0000000000..38caa38d37 --- /dev/null +++ b/board/brask/led.c @@ -0,0 +1,93 @@ +/* Copyright 2021 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. + */ + +/* Brya specific PWM LED settings: there are 2 LEDs on each side of the board, + * each one can be controlled separately. The LED colors are white or amber, + * and the default behavior is tied to the charging process: both sides are + * amber while charging the battery and white when the battery is charged. + */ + +#include <stdint.h> + +#include "common.h" +#include "compile_time_macros.h" +#include "ec_commands.h" +#include "led_pwm.h" +#include "pwm.h" +#include "util.h" + +const enum ec_led_id supported_led_ids[] = { + EC_LED_ID_LEFT_LED, + EC_LED_ID_RIGHT_LED, +}; + +const int supported_led_ids_count = ARRAY_SIZE(supported_led_ids); + +/* + * We only have a white and an amber LED, so setting any other color results in + * both LEDs being off. + */ +struct pwm_led led_color_map[EC_LED_COLOR_COUNT] = { + /* Amber, White */ + [EC_LED_COLOR_RED] = { 0, 0 }, + [EC_LED_COLOR_GREEN] = { 0, 0 }, + [EC_LED_COLOR_BLUE] = { 0, 0 }, + [EC_LED_COLOR_YELLOW] = { 0, 0 }, + [EC_LED_COLOR_WHITE] = { 0, 100 }, + [EC_LED_COLOR_AMBER] = { 100, 0 }, +}; + +/* Two logical LEDs with amber and white channels. */ +struct pwm_led pwm_leds[CONFIG_LED_PWM_COUNT] = { + { + .ch0 = PWM_CH_LED1, + .ch1 = PWM_CH_LED2, + .ch2 = PWM_LED_NO_CHANNEL, + .enable = &pwm_enable, + .set_duty = &pwm_set_duty, + }, + { + .ch0 = PWM_CH_LED3, + .ch1 = PWM_CH_LED4, + .ch2 = PWM_LED_NO_CHANNEL, + .enable = &pwm_enable, + .set_duty = &pwm_set_duty, + }, +}; + +void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range) +{ + memset(brightness_range, '\0', + sizeof(*brightness_range) * EC_LED_COLOR_COUNT); + brightness_range[EC_LED_COLOR_AMBER] = 100; + brightness_range[EC_LED_COLOR_WHITE] = 100; +} + +int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness) +{ + enum pwm_led_id pwm_id; + + /* Convert ec_led_id to pwm_led_id. */ + switch (led_id) { + case EC_LED_ID_LEFT_LED: + pwm_id = PWM_LED0; + break; + case EC_LED_ID_RIGHT_LED: + pwm_id = PWM_LED1; + break; + default: + return EC_ERROR_UNKNOWN; + } + + if (brightness[EC_LED_COLOR_WHITE]) + set_pwm_led_color(pwm_id, EC_LED_COLOR_WHITE); + else if (brightness[EC_LED_COLOR_AMBER]) + set_pwm_led_color(pwm_id, EC_LED_COLOR_AMBER); + else + /* Otherwise, the "color" is "off". */ + set_pwm_led_color(pwm_id, -1); + + return EC_SUCCESS; +} |