diff options
Diffstat (limited to 'zephyr/projects/nissa/yaviks/src/led.c')
| -rw-r--r-- | zephyr/projects/nissa/yaviks/src/led.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/zephyr/projects/nissa/yaviks/src/led.c b/zephyr/projects/nissa/yaviks/src/led.c new file mode 100644 index 0000000000..88a476f1b0 --- /dev/null +++ b/zephyr/projects/nissa/yaviks/src/led.c @@ -0,0 +1,231 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <stdint.h> + +#include "battery.h" +#include "charge_manager.h" +#include "charge_state.h" +#include "chipset.h" +#include "ec_commands.h" +#include "gpio.h" +#include "host_command.h" +#include "led_common.h" +#include "hooks.h" + +#define BAT_LED_ON 0 +#define BAT_LED_OFF 1 + +#define BATT_LOW_BCT 10 + +#define LED_TICKS_PER_CYCLE 4 +#define LED_TICKS_PER_CYCLE_S3 4 +#define LED_ON_TICKS 2 +#define POWER_LED_ON_S3_TICKS 2 + +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); + +enum led_color { + LED_OFF = 0, + LED_AMBER, + LED_WHITE, + LED_COLOR_COUNT /* Number of colors, not a color itself */ +}; + +enum led_port { LEFT_PORT = 0, RIGHT_PORT }; + +static void led_set_color_battery(int port, enum led_color color) +{ + const struct gpio_dt_spec *amber_led, *white_led; + + if (port == LEFT_PORT) { + amber_led = GPIO_DT_FROM_NODELABEL(gpio_c0_charger_led_amber_l); + white_led = GPIO_DT_FROM_NODELABEL(gpio_c0_charger_led_white_l); + } else if (port == RIGHT_PORT) { + amber_led = GPIO_DT_FROM_NODELABEL(gpio_c1_charger_led_amber_l); + white_led = GPIO_DT_FROM_NODELABEL(gpio_c1_charger_led_white_l); + } + + switch (color) { + case LED_WHITE: + gpio_pin_set_dt(white_led, BAT_LED_ON); + gpio_pin_set_dt(amber_led, BAT_LED_OFF); + break; + case LED_AMBER: + gpio_pin_set_dt(white_led, BAT_LED_OFF); + gpio_pin_set_dt(amber_led, BAT_LED_ON); + break; + case LED_OFF: + gpio_pin_set_dt(white_led, BAT_LED_OFF); + gpio_pin_set_dt(amber_led, BAT_LED_OFF); + break; + default: + break; + } +} + +void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range) +{ + switch (led_id) { + case EC_LED_ID_LEFT_LED: + brightness_range[EC_LED_COLOR_WHITE] = 1; + brightness_range[EC_LED_COLOR_AMBER] = 1; + break; + case EC_LED_ID_RIGHT_LED: + brightness_range[EC_LED_COLOR_WHITE] = 1; + brightness_range[EC_LED_COLOR_AMBER] = 1; + break; + default: + break; + } +} + +int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness) +{ + switch (led_id) { + case EC_LED_ID_LEFT_LED: + if (brightness[EC_LED_COLOR_WHITE] != 0) + led_set_color_battery(LEFT_PORT, LED_WHITE); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + led_set_color_battery(LEFT_PORT, LED_AMBER); + else + led_set_color_battery(LEFT_PORT, LED_OFF); + break; + case EC_LED_ID_RIGHT_LED: + if (brightness[EC_LED_COLOR_WHITE] != 0) + led_set_color_battery(RIGHT_PORT, LED_WHITE); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + led_set_color_battery(RIGHT_PORT, LED_AMBER); + else + led_set_color_battery(RIGHT_PORT, LED_OFF); + break; + default: + return EC_ERROR_PARAM1; + } + + return EC_SUCCESS; +} + +/* + * Set active charge port color to the parameter, turn off all others. + * If no port is active (-1), turn off all LEDs. + */ +static void set_active_port_color(enum led_color color) +{ + int port = charge_manager_get_active_charge_port(); + + if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) + led_set_color_battery(RIGHT_PORT, + (port == RIGHT_PORT) ? color : LED_OFF); + if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) + led_set_color_battery(LEFT_PORT, + (port == LEFT_PORT) ? color : LED_OFF); +} + +static void led_set_battery(void) +{ + static unsigned int battery_ticks; + static int suspend_ticks; + + battery_ticks++; + + /* + * Override battery LEDs for Yaviks, Yaviks is non-power LED + * design, blinking both two side battery white LEDs to indicate + * system suspend with non-charging state. + */ + if (chipset_in_state(CHIPSET_STATE_ANY_SUSPEND) && + charge_get_state() != PWR_STATE_CHARGE) { + suspend_ticks++; + + led_set_color_battery(RIGHT_PORT, + suspend_ticks % LED_TICKS_PER_CYCLE_S3 < + POWER_LED_ON_S3_TICKS ? + LED_WHITE : + LED_OFF); + led_set_color_battery(LEFT_PORT, + suspend_ticks % LED_TICKS_PER_CYCLE_S3 < + POWER_LED_ON_S3_TICKS ? + LED_WHITE : + LED_OFF); + return; + } + + suspend_ticks = 0; + + switch (charge_get_state()) { + case PWR_STATE_CHARGE: + /* Always indicate when charging, even in suspend. */ + set_active_port_color(LED_AMBER); + break; + case PWR_STATE_DISCHARGE: + /* + * Blinking amber LEDs slowly if battery is lower 10 + * percentage. + */ + if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) { + if (charge_get_percent() < BATT_LOW_BCT) + led_set_color_battery( + RIGHT_PORT, + (battery_ticks % LED_TICKS_PER_CYCLE < + LED_ON_TICKS) ? + LED_AMBER : + LED_OFF); + else + led_set_color_battery(RIGHT_PORT, LED_OFF); + } + + if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) { + if (charge_get_percent() < BATT_LOW_BCT) + led_set_color_battery( + LEFT_PORT, + (battery_ticks % LED_TICKS_PER_CYCLE < + LED_ON_TICKS) ? + LED_AMBER : + LED_OFF); + else + led_set_color_battery(LEFT_PORT, LED_OFF); + } + break; + case PWR_STATE_ERROR: + if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) { + led_set_color_battery( + RIGHT_PORT, + (battery_ticks & 0x1) ? LED_AMBER : LED_OFF); + } + + if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) { + led_set_color_battery(LEFT_PORT, (battery_ticks & 0x1) ? + LED_AMBER : + LED_OFF); + } + break; + case PWR_STATE_CHARGE_NEAR_FULL: + set_active_port_color(LED_WHITE); + break; + case PWR_STATE_IDLE: /* External power connected in IDLE */ + set_active_port_color(LED_WHITE); + break; + case PWR_STATE_FORCED_IDLE: + set_active_port_color( + (battery_ticks % LED_TICKS_PER_CYCLE < LED_ON_TICKS) ? + LED_AMBER : + LED_OFF); + break; + default: + /* Other states don't alter LED behavior */ + break; + } +} + +/* Called by hook task every TICK(IT83xx 500ms) */ +static void led_tick(void) +{ + led_set_battery(); +} +DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT); |