diff options
Diffstat (limited to 'board/gelarshie/led.c')
| -rw-r--r-- | board/gelarshie/led.c | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/board/gelarshie/led.c b/board/gelarshie/led.c new file mode 100644 index 0000000000..0a6c85be6d --- /dev/null +++ b/board/gelarshie/led.c @@ -0,0 +1,187 @@ +/* Copyright 2022 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. + */ + +#include "battery.h" +#include "charge_manager.h" +#include "charge_state.h" +#include "chipset.h" +#include "ec_commands.h" +#include "gpio.h" +#include "hooks.h" +#include "host_command.h" +#include "led_common.h" +#include "system.h" +#include "util.h" +#include "extpower.h" + +#define LED_ONE_SEC (1000 / HOOK_TICK_INTERVAL_MS) +/* Battery LED blinks every per 400ms */ +#define LED_HALF_ONE_SEC (500 / HOOK_TICK_INTERVAL_MS) + +#define BAT_LED_ON 1 +#define BAT_LED_OFF 0 + +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_AMBER, + LED_BLUE, + LED_COLOR_COUNT /* Number of colors, not a color itself */ +}; + +static void led_set_color(enum led_color color) +{ + gpio_set_level(GPIO_EC_CHG_LED_Y_C0, + (color == LED_AMBER) ? BAT_LED_ON : BAT_LED_OFF); + gpio_set_level(GPIO_EC_CHG_LED_W_C0, + (color == LED_BLUE) ? BAT_LED_ON : BAT_LED_OFF); +} + +void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range) +{ + brightness_range[EC_LED_COLOR_AMBER] = 1; + brightness_range[EC_LED_COLOR_BLUE] = 1; +} + +int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness) +{ + if (brightness[EC_LED_COLOR_BLUE] != 0) + led_set_color(LED_BLUE); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + led_set_color(LED_AMBER); + else + led_set_color(LED_OFF); + + return EC_SUCCESS; +} + +static void board_led_set_battery(void) +{ + static int battery_ticks; + int color = LED_OFF; + int period = 0; + uint32_t chflags = charge_get_flags(); + + battery_ticks++; + + switch (charge_get_state()) { + case PWR_STATE_CHARGE: + /* Always indicate amber on when charging. */ + color = LED_AMBER; + break; + case PWR_STATE_DISCHARGE: + if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND)) { + /* Discharging in S3: White 1 sec, off 1 sec */ + period = (1 + 1) * LED_ONE_SEC; + battery_ticks = battery_ticks % period; + if (battery_ticks < 1 * LED_ONE_SEC) { + if (charge_get_percent() < 10) + { + /* Blink amber light (1 sec on, 1 sec off) */ + color = LED_AMBER; + } + else + { + /* Blink white light (1 sec on, 1 sec off) */ + color = LED_BLUE; + } + } else { + color = LED_OFF; + } + } else { + /* Discharging in S5 and S0: off */ + /* Blink amber light (1 sec on, 1 sec off) */ + if (charge_get_percent() < 10) { + period = (1 + 1) * LED_ONE_SEC; + battery_ticks = battery_ticks % period; + if (battery_ticks < 1 * LED_ONE_SEC) + color = LED_AMBER; + else + color = LED_OFF; + } else { + /* G3 or S5 or S0: off */ + color = LED_OFF; + } + } + break; + case PWR_STATE_ERROR: + /* Battery error: Amber on 0.5 sec, off 0.5 sec */ + period = (1 + 1) * LED_HALF_ONE_SEC; + battery_ticks = battery_ticks % period; + if (battery_ticks < 1 * LED_HALF_ONE_SEC) + color = LED_AMBER; + else + color = LED_OFF; + break; + case PWR_STATE_CHARGE_NEAR_FULL: + /* Full Charged: Blue on */ + /* S3: Blink white light (1 sec on, 1 sec off) */ + if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND)) { + period = (1 + 1) * LED_ONE_SEC; + battery_ticks = battery_ticks % period; + if (battery_ticks < 1 * LED_ONE_SEC) + color = LED_BLUE; + else + color = LED_OFF; + } else { + /* Full charged: White on */ + color = LED_BLUE; + } + break; + case PWR_STATE_IDLE: /* External power connected in IDLE */ + if (chflags & CHARGE_FLAG_FORCE_IDLE) { + /* Factory mode: Blue 2 sec, Amber 2 sec */ + period = (2 + 2) * LED_ONE_SEC; + battery_ticks = battery_ticks % period; + if (battery_ticks < 2 * LED_ONE_SEC) + color = LED_BLUE; + else + color = LED_AMBER; + } else + color = LED_BLUE; + break; + default: + /* Other states don't alter LED behavior */ + break; + } + + led_set_color(color); +} + +/* Called by hook task every TICK */ +static void led_tick(void) +{ + if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED)) + board_led_set_battery(); +} +DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT); + +void led_control(enum ec_led_id led_id, enum ec_led_state state) +{ + enum led_color color; + + if ((led_id != EC_LED_ID_RECOVERY_HW_REINIT_LED) && + (led_id != EC_LED_ID_SYSRQ_DEBUG_LED)) + return; + + if (state == LED_STATE_RESET) { + led_auto_control(EC_LED_ID_BATTERY_LED, 1); + board_led_set_battery(); + return; + } + + color = state ? LED_BLUE : LED_OFF; + + led_auto_control(EC_LED_ID_BATTERY_LED, 0); + + led_set_color(color); +} |