1 files changed, 0 insertions, 159 deletions
diff --git a/chip/mec1322/fan.c b/chip/mec1322/fan.c
deleted file mode 100644
index 1f54389fc7..0000000000
--- a/chip/mec1322/fan.c
+++ /dev/null
@@ -1,159 +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.
- */
-
-/* MEC1322 fan control module. */
-
-/* This assumes 2-pole fan. For each rotation, 5 edges are measured. */
-
-#include "fan.h"
-#include "registers.h"
-#include "util.h"
-
-/* Maximum tach reading/target value */
-#define MAX_TACH 0x1fff
-
-/* Tach target value for disable fan */
-#define FAN_OFF_TACH 0xfff8
-
-/*
- * RPM = (n - 1) * m * f * 60 / poles / TACH
- *   n = number of edges = 5
- *   m = multiplier defined by RANGE = 2 in our case
- *   f = 32.768K
- *   poles = 2
- */
-#define RPM_TO_TACH(rpm) MIN((7864320 / MAX((rpm), 1)), MAX_TACH)
-#define TACH_TO_RPM(tach) (7864320 / MAX((tach), 1))
-
-static int rpm_setting;
-static int duty_setting;
-static int in_rpm_mode = 1;
-
-
-static void clear_status(void)
-{
-	/* Clear DRIVE_FAIL, FAN_SPIN, and FAN_STALL bits */
-	MEC1322_FAN_STATUS = 0x23;
-}
-
-void fan_set_enabled(int ch, int enabled)
-{
-	if (in_rpm_mode) {
-		if (enabled)
-			fan_set_rpm_target(ch, rpm_setting);
-		else
-			MEC1322_FAN_TARGET = FAN_OFF_TACH;
-	} else {
-		if (enabled)
-			fan_set_duty(ch, duty_setting);
-		else
-			MEC1322_FAN_SETTING = 0;
-	}
-	clear_status();
-}
-
-int fan_get_enabled(int ch)
-{
-	if (in_rpm_mode)
-		return (MEC1322_FAN_TARGET & 0xff00) != 0xff00;
-	else
-		return !!MEC1322_FAN_SETTING;
-}
-
-void fan_set_duty(int ch, int percent)
-{
-	if (percent < 0)
-		percent = 0;
-	else if (percent > 100)
-		percent = 100;
-
-	duty_setting = percent;
-	MEC1322_FAN_SETTING = percent * 255 / 100;
-	clear_status();
-}
-
-int fan_get_duty(int ch)
-{
-	return duty_setting;
-}
-
-int fan_get_rpm_mode(int ch)
-{
-	return !!(MEC1322_FAN_CFG1 & BIT(7));
-}
-
-void fan_set_rpm_mode(int ch, int rpm_mode)
-{
-	if (rpm_mode)
-		MEC1322_FAN_CFG1 |= BIT(7);
-	else
-		MEC1322_FAN_CFG1 &= ~BIT(7);
-	clear_status();
-}
-
-int fan_get_rpm_actual(int ch)
-{
-	if ((MEC1322_FAN_READING >> 8) == 0xff)
-		return 0;
-	else
-		return TACH_TO_RPM(MEC1322_FAN_READING >> 3);
-}
-
-int fan_get_rpm_target(int ch)
-{
-	return rpm_setting;
-}
-
-void fan_set_rpm_target(int ch, int rpm)
-{
-	rpm_setting = rpm;
-	MEC1322_FAN_TARGET = RPM_TO_TACH(rpm) << 3;
-	clear_status();
-}
-
-enum fan_status fan_get_status(int ch)
-{
-	uint8_t sts = MEC1322_FAN_STATUS;
-
-	if (sts & (BIT(5) | BIT(1)))
-		return FAN_STATUS_FRUSTRATED;
-	if (fan_get_rpm_actual(ch) == 0)
-		return FAN_STATUS_STOPPED;
-	return FAN_STATUS_LOCKED;
-}
-
-int fan_is_stalled(int ch)
-{
-	uint8_t sts = MEC1322_FAN_STATUS;
-	if (fan_get_rpm_actual(ch)) {
-		MEC1322_FAN_STATUS = 0x1;
-		return 0;
-	}
-	return sts & 0x1;
-}
-
-void fan_channel_setup(int ch, unsigned int flags)
-{
-	/*
-	 * Fan configuration 1 register:
-	 *   0x80 = bit 7    = RPM mode (0x00 if FAN_USE_RPM_MODE not set)
-	 *   0x20 = bits 6:5 = min 1000 RPM, multiplier = 2
-	 *   0x08 = bits 4:3 = 5 edges, 2 poles
-	 *   0x03 = bits 2:0 = 400 ms update time
-	 *
-	 * Fan configuration 2 register:
-	 *   0x00 = bit 6    = Ramp control disabled
-	 *   0x00 = bit 5    = Glitch filter enabled
-	 *   0x18 = bits 4:3 = Using both derivative options
-	 *   0x02 = bits 2:1 = error range is 50 RPM
-	 *   0x00 = bits 0   = normal polarity
-	 */
-	if (flags & FAN_USE_RPM_MODE)
-		MEC1322_FAN_CFG1 = 0xab;
-	else
-		MEC1322_FAN_CFG1 = 0x2b;
-	MEC1322_FAN_CFG2 = 0x1a;
-	clear_status();
-}