diff options
Diffstat (limited to 'board/jinlon/led.c')
| -rw-r--r-- | board/jinlon/led.c | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/board/jinlon/led.c b/board/jinlon/led.c new file mode 100644 index 0000000000..60e54a505e --- /dev/null +++ b/board/jinlon/led.c @@ -0,0 +1,217 @@ +/* Copyright 2019 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 for Dratini/Dragonair + */ + +#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 POWER_LED_ON 0 +#define POWER_LED_OFF 1 + +#define LED_TICKS_PER_CYCLE 10 +#define LED_ON_TICKS 5 + +const enum ec_led_id supported_led_ids[] = { + EC_LED_ID_LEFT_LED, + EC_LED_ID_RIGHT_LED, + EC_LED_ID_POWER_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 */ +}; + +static void led_set_color_battery(int port, enum led_color color) +{ + enum gpio_signal amber_led, white_led; + + amber_led = (port == 0 ? GPIO_LED_AMBER_C0_L : GPIO_LED_AMBER_C1_L); + white_led = (port == 0 ? GPIO_LED_WHITE_C0_L : GPIO_LED_WHITE_C1_L); + + switch (color) { + case LED_WHITE: + gpio_set_level(white_led, BAT_LED_ON); + gpio_set_level(amber_led, BAT_LED_OFF); + break; + case LED_AMBER: + gpio_set_level(white_led, BAT_LED_OFF); + gpio_set_level(amber_led, BAT_LED_ON); + break; + case LED_OFF: + gpio_set_level(white_led, BAT_LED_OFF); + gpio_set_level(amber_led, BAT_LED_OFF); + break; + default: + break; + } +} + +void led_set_color_power(enum ec_led_colors color) +{ + switch (color) { + case LED_OFF: + gpio_set_level(GPIO_PWR_LED_WHITE_L, POWER_LED_OFF); + break; + case LED_WHITE: + gpio_set_level(GPIO_PWR_LED_WHITE_L, POWER_LED_ON); + 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; + case EC_LED_ID_POWER_LED: + brightness_range[EC_LED_COLOR_WHITE] = 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(1, LED_WHITE); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + led_set_color_battery(1, LED_AMBER); + else + led_set_color_battery(1, LED_OFF); + break; + case EC_LED_ID_RIGHT_LED: + if (brightness[EC_LED_COLOR_WHITE] != 0) + led_set_color_battery(0, LED_WHITE); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + led_set_color_battery(0, LED_AMBER); + else + led_set_color_battery(0, LED_OFF); + break; + case EC_LED_ID_POWER_LED: + if (brightness[EC_LED_COLOR_WHITE] != 0) + led_set_color_power(LED_WHITE); + else + led_set_color_power(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(0, (port == 0) ? color : LED_OFF); + if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) + led_set_color_battery(1, (port == 1) ? color : LED_OFF); +} + +static void led_set_battery(void) +{ + static int battery_ticks; + uint32_t chflags = charge_get_flags(); + + battery_ticks++; + + 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: + if (led_auto_control_is_enabled(EC_LED_ID_RIGHT_LED)) { + if (charge_get_percent() < 10) + led_set_color_battery(0, (battery_ticks % + LED_TICKS_PER_CYCLE < LED_ON_TICKS) ? + LED_WHITE : LED_OFF); + else + led_set_color_battery(0, LED_OFF); + } + + if (led_auto_control_is_enabled(EC_LED_ID_LEFT_LED)) + led_set_color_battery(1, LED_OFF); + break; + case PWR_STATE_ERROR: + set_active_port_color((battery_ticks & 0x2) ? + LED_WHITE : 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 */ + if (chflags & CHARGE_FLAG_FORCE_IDLE) + set_active_port_color((battery_ticks % + LED_TICKS_PER_CYCLE < LED_ON_TICKS) ? + LED_AMBER : LED_OFF); + else + set_active_port_color(LED_WHITE); + break; + default: + /* Other states don't alter LED behavior */ + break; + } +} + +static void led_set_power(void) +{ + static int power_tick; + + power_tick++; + + if (chipset_in_state(CHIPSET_STATE_ON)) + led_set_color_power(LED_WHITE); + else if (chipset_in_state(CHIPSET_STATE_SUSPEND | + CHIPSET_STATE_STANDBY)) + led_set_color_power((power_tick % + LED_TICKS_PER_CYCLE < LED_ON_TICKS) ? + LED_WHITE : LED_OFF); + else + led_set_color_power(LED_OFF); +} + +/* Called by hook task every TICK */ +static void led_tick(void) +{ + if (led_auto_control_is_enabled(EC_LED_ID_POWER_LED)) + led_set_power(); + + led_set_battery(); +} +DECLARE_HOOK(HOOK_TICK, led_tick, HOOK_PRIO_DEFAULT); |