1 files changed, 0 insertions, 133 deletions
diff --git a/board/cr50/ap_uart_state.c b/board/cr50/ap_uart_state.c
deleted file mode 100644
index 191ecee95b..0000000000
--- a/board/cr50/ap_uart_state.c
+++ /dev/null
@@ -1,133 +0,0 @@
-/* Copyright 2018 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.
- *
- * AP UART state machine
- */
-#include "ccd_config.h"
-#include "common.h"
-#include "console.h"
-#include "gpio.h"
-#include "hooks.h"
-#include "uart_bitbang.h"
-#include "uartn.h"
-
-#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args)
-
-static enum device_state state = DEVICE_STATE_INIT;
-
-void print_ap_uart_state(void)
-{
-	ccprintf("AP UART: %s\n", device_state_name(state));
-}
-
-int ap_uart_is_on(void)
-{
-	/* Debouncing and on are both still on */
-	return (state == DEVICE_STATE_DEBOUNCING || state == DEVICE_STATE_ON);
-}
-
-/**
- * Set the AP UART state.
- *
- * Done as a function to make it easier to debug state transitions.  Note that
- * this ONLY sets the state (and possibly prints debug info), and doesn't do
- * all the additional transition work that set_ap_uart_on(), etc. do.
- *
- * @param new_state	State to set.
- */
-static void set_state(enum device_state new_state)
-{
-#ifdef CR50_DEBUG_AP_UART_STATE
-	/* Print all state transitions.  May spam the console. */
-	if (state != new_state)
-		CPRINTS("AP UART %s -> %s",
-			device_state_name(state), device_state_name(new_state));
-#endif
-	state = new_state;
-}
-
-/* Move the AP UART to the OFF state. */
-static void set_ap_uart_off(void)
-{
-	CPRINTS("AP UART off");
-	set_state(DEVICE_STATE_OFF);
-
-	ccd_update_state();
-}
-
-/**
- * Move the AP UART to the ON state.
- *
- * This can be deferred from the interrupt handler, or called from the state
- * machine which also runs in HOOK task, so it needs to check the current state
- * to determine whether we're already on.
- */
-static void set_ap_uart_on_deferred(void)
-{
-	/* If we were debouncing ON->OFF, cancel it because we're still on */
-	if (state == DEVICE_STATE_DEBOUNCING)
-		set_state(DEVICE_STATE_ON);
-
-	/* If we're already on, done */
-	if (state == DEVICE_STATE_ON)
-		return;
-
-	/* We were previously off */
-	CPRINTS("AP UART on");
-	set_state(DEVICE_STATE_ON);
-
-	ccd_update_state();
-}
-DECLARE_DEFERRED(set_ap_uart_on_deferred);
-
-/**
- * Interrupt handler for AP detect asserted
- */
-void ap_detect_asserted(enum gpio_signal signal)
-{
-	gpio_disable_interrupt(GPIO_DETECT_AP_UART);
-	hook_call_deferred(&set_ap_uart_on_deferred_data, 0);
-}
-
-/**
- * Detect state machine
- */
-static void ap_uart_detect(void)
-{
-	/* Disable interrupts if we had them on for debouncing */
-	gpio_disable_interrupt(GPIO_DETECT_AP_UART);
-
-	/* If the AP UART signal is high, make sure it's on */
-	if (gpio_get_level(GPIO_DETECT_AP_UART)) {
-		hook_call_deferred(&set_ap_uart_on_deferred_data, 0);
-		return;
-	}
-
-	/*
-	 * Make sure the interrupt is enabled. We will need to detect the on
-	 * transition if we enter the off or debouncing state
-	 */
-	gpio_enable_interrupt(GPIO_DETECT_AP_UART);
-
-	/* AP UART wasn't detected.  If we're already off, done. */
-	if (state == DEVICE_STATE_OFF)
-		return;
-
-	/* If we were debouncing, we're now sure we're off */
-	if (state == DEVICE_STATE_DEBOUNCING ||
-	    state == DEVICE_STATE_INIT_DEBOUNCING) {
-		set_ap_uart_off();
-		return;
-	}
-
-	/*
-	 * Otherwise, we were on or initializing, and we're not sure if the AP
-	 * UART is actually off or just sending a 0-bit.  So start debouncing.
-	 */
-	if (state == DEVICE_STATE_INIT)
-		set_state(DEVICE_STATE_INIT_DEBOUNCING);
-	else
-		set_state(DEVICE_STATE_DEBOUNCING);
-}
-DECLARE_HOOK(HOOK_SECOND, ap_uart_detect, HOOK_PRIO_DEFAULT);