1 files changed, 0 insertions, 162 deletions
diff --git a/chip/stm32/power_led.c b/chip/stm32/power_led.c
deleted file mode 100644
index 508745199f..0000000000
--- a/chip/stm32/power_led.c
+++ /dev/null
@@ -1,162 +0,0 @@
-/* Copyright 2013 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.
- */
-
-/*
- * Keyboard power button LED state machine.
- *
- * This sets up TIM_POWER_LED to drive the power button LED so that the duty
- * cycle can range from 0-100%. When the lid is closed or turned off, then the
- * PWM is disabled and the GPIO is reconfigured to minimize leakage voltage.
- *
- * In suspend mode, duty cycle transitions progressively slower from 0%
- * to 100%, and progressively faster from 100% back down to 0%. This
- * results in a breathing effect. It takes about 2sec for a full cycle.
- */
-
-#include "clock.h"
-#include "console.h"
-#include "gpio.h"
-#include "hooks.h"
-#include "hwtimer.h"
-#include "power_led.h"
-#include "pwm.h"
-#include "pwm_chip.h"
-#include "registers.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-
-#define LED_STATE_TIMEOUT_MIN	(15 * MSEC)  /* Minimum of 15ms per step */
-#define LED_HOLD_TIME		(330 * MSEC) /* Hold for 330ms at min/max */
-#define LED_STEP_PERCENT	4	/* Incremental value of each step */
-
-static enum powerled_state led_state = POWERLED_STATE_ON;
-static int power_led_percent = 100;
-
-void powerled_set_state(enum powerled_state new_state)
-{
-	led_state = new_state;
-	/* Wake up the task */
-	task_wake(TASK_ID_POWERLED);
-}
-
-static void power_led_set_duty(int percent)
-{
-	ASSERT((percent >= 0) && (percent <= 100));
-	power_led_percent = percent;
-	pwm_set_duty(PWM_CH_POWER_LED, percent);
-}
-
-static void power_led_use_pwm(void)
-{
-	pwm_enable(PWM_CH_POWER_LED, 1);
-	power_led_set_duty(100);
-}
-
-static void power_led_manual_off(void)
-{
-	pwm_enable(PWM_CH_POWER_LED, 0);
-
-	/*
-	 * Reconfigure GPIO as a floating input. Alternatively we could
-	 * configure it as an open-drain output and set it to high impedance,
-	 * but reconfiguring as an input had better results in testing.
-	 */
-	gpio_config_module(MODULE_POWER_LED, 0);
-}
-
-/**
- * Return the timeout period (in us) for the current step.
- */
-static int power_led_step(void)
-{
-	int state_timeout = 0;
-	static enum { DOWN = -1, UP = 1 } dir = UP;
-
-	if (0 == power_led_percent) {
-		dir = UP;
-		state_timeout = LED_HOLD_TIME;
-	} else if (100 == power_led_percent) {
-		dir = DOWN;
-		state_timeout = LED_HOLD_TIME;
-	} else {
-		/*
-		 * Decreases timeout as duty cycle percentage approaches
-		 * 0%, increase as it approaches 100%.
-		 */
-		state_timeout = LED_STATE_TIMEOUT_MIN +
-			LED_STATE_TIMEOUT_MIN * (power_led_percent / 33);
-	}
-
-	/*
-	 * The next duty cycle will take effect after the timeout has
-	 * elapsed for this duty cycle and the power LED task calls this
-	 * function again.
-	 */
-	power_led_set_duty(power_led_percent);
-	power_led_percent += dir * LED_STEP_PERCENT;
-
-	return state_timeout;
-}
-
-void power_led_task(void)
-{
-	while (1) {
-		int state_timeout = -1;
-
-		switch (led_state) {
-		case POWERLED_STATE_ON:
-			/*
-			 * "ON" implies driving the LED using the PWM with a
-			 * duty duty cycle of 100%. This produces a softer
-			 * brightness than setting the GPIO to solid ON.
-			 */
-			power_led_use_pwm();
-			power_led_set_duty(100);
-			state_timeout = -1;
-			break;
-		case POWERLED_STATE_OFF:
-			/* Reconfigure GPIO to disable the LED */
-			power_led_manual_off();
-			state_timeout = -1;
-			break;
-		case POWERLED_STATE_SUSPEND:
-			/* Drive using PWM with variable duty cycle */
-			power_led_use_pwm();
-			state_timeout = power_led_step();
-			break;
-		default:
-			break;
-		}
-
-		task_wait_event(state_timeout);
-	}
-}
-
-#define CONFIG_CMD_POWERLED
-#ifdef CONFIG_CMD_POWERLED
-static int command_powerled(int argc, char **argv)
-{
-	enum powerled_state state;
-
-	if (argc != 2)
-		return EC_ERROR_INVAL;
-
-	if (!strcasecmp(argv[1], "off"))
-		state = POWERLED_STATE_OFF;
-	else if (!strcasecmp(argv[1], "on"))
-		state = POWERLED_STATE_ON;
-	else if (!strcasecmp(argv[1], "suspend"))
-		state = POWERLED_STATE_SUSPEND;
-	else
-		return EC_ERROR_INVAL;
-
-	powerled_set_state(state);
-	return EC_SUCCESS;
-}
-DECLARE_CONSOLE_COMMAND(powerled, command_powerled,
-		"[off | on | suspend]",
-		"Change power LED state");
-#endif