diff options
Diffstat (limited to 'chip/lm4/pwm.c')
-rw-r--r-- | chip/lm4/pwm.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/chip/lm4/pwm.c b/chip/lm4/pwm.c deleted file mode 100644 index 38ce61714d..0000000000 --- a/chip/lm4/pwm.c +++ /dev/null @@ -1,70 +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. - */ - -/* PWM control module for LM4. - * - * On this chip, the PWM logic is implemented by the hardware FAN modules. - */ - -#include "clock.h" -#include "fan.h" -#include "gpio.h" -#include "hooks.h" -#include "pwm.h" -#include "pwm_chip.h" -#include "registers.h" -#include "util.h" - -void pwm_enable(enum pwm_channel ch, int enabled) -{ - fan_set_enabled(pwm_channels[ch].channel, enabled); -} - -int pwm_get_enabled(enum pwm_channel ch) -{ - return fan_get_enabled(pwm_channels[ch].channel); -} - -void pwm_set_duty(enum pwm_channel ch, int percent) -{ - if (percent < 0) - percent = 0; - else if (percent > 100) - percent = 100; - - /* Assume the fan control is active high and invert it ourselves */ - if (pwm_channels[ch].flags & PWM_CONFIG_ACTIVE_LOW) - percent = 100 - percent; - - /* Always enable the channel */ - pwm_enable(ch, 1); - - /* Set the duty cycle */ - fan_set_duty(pwm_channels[ch].channel, percent); -} - -int pwm_get_duty(enum pwm_channel ch) -{ - int percent = fan_get_duty(pwm_channels[ch].channel); - - if (pwm_channels[ch].flags & PWM_CONFIG_ACTIVE_LOW) - percent = 100 - percent; - - return percent; -} - -static void pwm_init(void) -{ - int i; - - for (i = 0; i < PWM_CH_COUNT; ++i) - fan_channel_setup(pwm_channels[i].channel, - (pwm_channels[i].flags & - PWM_CONFIG_HAS_RPM_MODE) - ? FAN_USE_RPM_MODE : 0); -} - -/* The chip-specific fan module initializes before this. */ -DECLARE_HOOK(HOOK_INIT, pwm_init, HOOK_PRIO_INIT_PWM); |