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author | Scott Worley <scott.worley@microchip.corp-partner.google.com> | 2017-12-21 16:18:22 -0500 |
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committer | chrome-bot <chrome-bot@chromium.org> | 2018-02-08 23:41:19 -0800 |
commit | 5e18dfc34575e95b3c75de3e02a5d9d42b04c71b (patch) | |
tree | e11e87199c07bda9b5c7a4147a3a9069cadf499d /board/mchpevb1/led.c | |
parent | 178e18a164d5b9b440d8823f659b8e995bb0f358 (diff) | |
download | chrome-ec-5e18dfc34575e95b3c75de3e02a5d9d42b04c71b.tar.gz |
mchpevb1: Add remaining board files
Add Microchip EVB plus SKL RVP3 remaining board
files for battery, LED, and USB PD.
BRANCH=none
BUG=
TEST=Review only.
CQ-DEPEND=CL:840654,CL:841022
Change-Id: I34ccb33eb44e73ab841f96f4733bfe419b095678
Signed-off-by: Scott Worley <scott.worley@microchip.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/841043
Commit-Ready: Randall Spangler <rspangler@chromium.org>
Tested-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Diffstat (limited to 'board/mchpevb1/led.c')
-rw-r--r-- | board/mchpevb1/led.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/board/mchpevb1/led.c b/board/mchpevb1/led.c new file mode 100644 index 0000000000..7b9f7646cb --- /dev/null +++ b/board/mchpevb1/led.c @@ -0,0 +1,174 @@ +/* Copyright 2017 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 MEC1701 EVB. + */ + +#include "battery.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 "util.h" + +#define BAT_LED_ON 1 +#define BAT_LED_OFF 0 + +#define CRITICAL_LOW_BATTERY_PERCENTAGE 3 +#define LOW_BATTERY_PERCENTAGE 10 + +#define LED_TOTAL_4SECS_TICKS 4 +#define LED_TOTAL_2SECS_TICKS 2 +#define LED_ON_1SEC_TICKS 1 +#define LED_ON_2SECS_TICKS 2 + +/* + * NOTE: GPIO_BAT_LED_xxx defined in board.h + */ + +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 */ +}; + +static int bat_led_set_color(enum led_color color) +{ + switch (color) { + case LED_OFF: + gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF); + gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF); + break; + case LED_RED: + gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON); + gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_OFF); + break; + case LED_AMBER: + gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_ON); + gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON); + break; + case LED_GREEN: + gpio_set_level(GPIO_BAT_LED_RED, BAT_LED_OFF); + gpio_set_level(GPIO_BAT_LED_GREEN, BAT_LED_ON); + break; + default: + return EC_ERROR_UNKNOWN; + } + return EC_SUCCESS; +} + +void led_get_brightness_range(enum ec_led_id led_id, + uint8_t *brightness_range) +{ + brightness_range[EC_LED_COLOR_RED] = 1; + brightness_range[EC_LED_COLOR_GREEN] = 1; +} + +static int board_led_set_color_battery(enum led_color color) +{ + return bat_led_set_color(color); +} + +static int board_led_set_color(enum ec_led_id led_id, enum led_color color) +{ + int rv; + + led_auto_control(led_id, 0); + switch (led_id) { + case EC_LED_ID_BATTERY_LED: + rv = board_led_set_color_battery(color); + break; + default: + return EC_ERROR_UNKNOWN; + } + return rv; +} + +int led_set_brightness(enum ec_led_id led_id, const uint8_t *brightness) +{ + if (brightness[EC_LED_COLOR_RED] != 0 && + brightness[EC_LED_COLOR_GREEN] != 0) + board_led_set_color(led_id, LED_AMBER); + else if (brightness[EC_LED_COLOR_RED] != 0) + board_led_set_color(led_id, LED_RED); + else if (brightness[EC_LED_COLOR_GREEN] != 0) + board_led_set_color(led_id, LED_GREEN); + else + board_led_set_color(led_id, LED_OFF); + + return EC_SUCCESS; +} + +static void board_led_set_battery(void) +{ +#ifdef CONFIG_CHARGER + static int battery_ticks; + uint32_t chflags = charge_get_flags(); + + battery_ticks++; + + /* BAT LED behavior: + * Same as the chromeos spec + * Green/Amber for CHARGE_FLAG_FORCE_IDLE + */ + switch (charge_get_state()) { + case PWR_STATE_CHARGE: + board_led_set_color_battery(LED_AMBER); + break; + case PWR_STATE_DISCHARGE: + /* Less than 3%, blink one second every two second */ + if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) && + charge_get_percent() < CRITICAL_LOW_BATTERY_PERCENTAGE) + board_led_set_color_battery( + (battery_ticks % LED_TOTAL_2SECS_TICKS < + LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF); + /* Less than 10%, blink one second every four seconds */ + else if (!chipset_in_state(CHIPSET_STATE_ANY_OFF) && + charge_get_percent() < LOW_BATTERY_PERCENTAGE) + board_led_set_color_battery( + (battery_ticks % LED_TOTAL_4SECS_TICKS < + LED_ON_1SEC_TICKS) ? LED_AMBER : LED_OFF); + else + board_led_set_color_battery(LED_OFF); + break; + case PWR_STATE_ERROR: + board_led_set_color_battery( + (battery_ticks % LED_TOTAL_2SECS_TICKS < + LED_ON_1SEC_TICKS) ? LED_RED : LED_OFF); + break; + case PWR_STATE_CHARGE_NEAR_FULL: + board_led_set_color_battery(LED_GREEN); + break; + case PWR_STATE_IDLE: /* External power connected in IDLE */ + if (chflags & CHARGE_FLAG_FORCE_IDLE) + board_led_set_color_battery( + (battery_ticks % LED_TOTAL_4SECS_TICKS < + LED_ON_2SECS_TICKS) ? LED_GREEN : LED_AMBER); + else + board_led_set_color_battery(LED_GREEN); + break; + default: + /* Other states don't alter LED behavior */ + break; + } +#endif +} + + +static void led_second(void) +{ + if (led_auto_control_is_enabled(EC_LED_ID_BATTERY_LED)) + board_led_set_battery(); +} +DECLARE_HOOK(HOOK_SECOND, led_second, HOOK_PRIO_DEFAULT); |