diff options
| -rw-r--r-- | board/kevin/board.h | 4 | ||||
| -rw-r--r-- | board/kevin/build.mk | 1 | ||||
| -rw-r--r-- | board/kevin/led_gru.c | 130 |
3 files changed, 132 insertions, 3 deletions
diff --git a/board/kevin/board.h b/board/kevin/board.h index 9b51328b2d..4e456260a4 100644 --- a/board/kevin/board.h +++ b/board/kevin/board.h @@ -14,12 +14,10 @@ #define CONFIG_HOSTCMD_SPS #define CONFIG_I2C #define CONFIG_I2C_MASTER +#define CONFIG_LED_COMMON #define CONFIG_POWER_COMMON #define CONFIG_PWM #define CONFIG_PWM_DISPLIGHT -#ifdef BOARD_KEVIN -#define CONFIG_LED_COMMON -#endif #define CONFIG_SPI #define CONFIG_SPI_MASTER diff --git a/board/kevin/build.mk b/board/kevin/build.mk index e441c412f9..cf5289d541 100644 --- a/board/kevin/build.mk +++ b/board/kevin/build.mk @@ -11,4 +11,5 @@ CHIP:=npcx CHIP_VARIANT:=npcx5m5g board-y=battery.o board.o usb_pd_policy.o +board-$(BOARD_GRU)+=led_gru.o board-$(BOARD_KEVIN)+=led_kevin.o diff --git a/board/kevin/led_gru.c b/board/kevin/led_gru.c new file mode 100644 index 0000000000..cbe59a2ad8 --- /dev/null +++ b/board/kevin/led_gru.c @@ -0,0 +1,130 @@ +/* Copyright 2016 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. + * + * gru battery LED control - derived from standard policy with PWM + * color control rather than GPIO. + */ + +#include "battery.h" +#include "charge_state.h" +#include "chipset.h" +#include "hooks.h" +#include "led_common.h" +#include "lid_switch.h" +#include "pwm.h" +#include "util.h" + +#define GRU_BAT_LED_PWM PWM_CH_LED_RED + +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_AMBER, + LED_GREEN, + LED_COLOR_COUNT /* Number of colors, not a color itself */ +}; + +/* One LED active at a time. PWM low period determines which LED is active. */ +static const int led_color_to_pwm_duty[LED_COLOR_COUNT] = { + [LED_OFF] = 100, + [LED_RED] = 0, + [LED_AMBER] = 80, + [LED_GREEN] = 85, +}; + +static int bat_led_set_color(enum led_color color) +{ + pwm_set_duty(GRU_BAT_LED_PWM, led_color_to_pwm_duty[color]); + return EC_SUCCESS; +} + +void led_get_brightness_range(enum ec_led_id led_id, uint8_t *brightness_range) +{ + switch (led_id) { + case EC_LED_ID_BATTERY_LED: + brightness_range[EC_LED_COLOR_RED] = 1; + brightness_range[EC_LED_COLOR_AMBER] = 1; + brightness_range[EC_LED_COLOR_GREEN] = 1; + break; + default: + /* ignore */ + break; + } +} + +int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness) +{ + switch (led_id) { + case EC_LED_ID_BATTERY_LED: + if (brightness[EC_LED_COLOR_RED] != 0) + bat_led_set_color(LED_RED); + else if (brightness[EC_LED_COLOR_AMBER] != 0) + bat_led_set_color(LED_AMBER); + else if (brightness[EC_LED_COLOR_GREEN] != 0) + bat_led_set_color(LED_GREEN); + else + bat_led_set_color(LED_OFF); + break; + default: + return EC_ERROR_UNKNOWN; + } + return EC_SUCCESS; +} + +static void gru_led_set_battery(void) +{ + static int battery_second; + uint32_t chflags = charge_get_flags(); + + battery_second++; + + /* + * BAT LED behavior: Follow chromeos specification. + * Green/Amber for CHARGE_FLAG_FORCE_IDLE + */ + switch (charge_get_state()) { + case PWR_STATE_CHARGE: + bat_led_set_color(LED_AMBER); + break; + case PWR_STATE_DISCHARGE: + if (charge_get_percent() < 3) + bat_led_set_color((battery_second & 1) + ? LED_OFF : LED_AMBER); + else if (charge_get_percent() < 10) + bat_led_set_color((battery_second & 3) + ? LED_OFF : LED_AMBER); + else + bat_led_set_color(LED_OFF); + break; + case PWR_STATE_ERROR: + bat_led_set_color((battery_second & 1) ? LED_OFF : LED_RED); + break; + case PWR_STATE_CHARGE_NEAR_FULL: + bat_led_set_color(LED_GREEN); + break; + case PWR_STATE_IDLE: /* External power connected in IDLE. */ + if (chflags & CHARGE_FLAG_FORCE_IDLE) + bat_led_set_color( + (battery_second & 0x2) ? LED_GREEN : LED_AMBER); + else + bat_led_set_color(LED_GREEN); + break; + default: + /* Other states don't alter LED behavior */ + break; + } +} + +/* Called by hook task every 1 sec */ +static void led_second(void) +{ + if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED)) + gru_led_set_battery(); +} +DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT); + |