86 lines
1.6 KiB
C
86 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2020 MediaTek Inc.
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*/
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#include <linux/platform_device.h>
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#include "reviser_cmn.h"
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#include "reviser_power.h"
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#include "reviser_drv.h"
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#include "apusys_power.h"
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bool reviser_is_power(void *drvinfo)
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{
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struct reviser_dev_info *rdv = NULL;
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unsigned long flags;
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bool is_power = false;
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DEBUG_TAG;
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if (drvinfo == NULL) {
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LOG_ERR("invalid argument\n");
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return is_power;
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}
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rdv = (struct reviser_dev_info *)drvinfo;
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spin_lock_irqsave(&rdv->lock.lock_power, flags);
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if (rdv->power.power) {
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//LOG_ERR("Can Not Read when power disable\n");
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is_power = true;
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}
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spin_unlock_irqrestore(&rdv->lock.lock_power, flags);
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return is_power;
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}
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int reviser_power_on(void *drvinfo)
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{
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struct reviser_dev_info *rdv = NULL;
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int ret = 0;
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rdv = (struct reviser_dev_info *)drvinfo;
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mutex_lock(&rdv->lock.mutex_power);
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if (rdv->power.power_count == 0) {
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ret = apu_device_power_on(REVISER);
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if (ret < 0)
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LOG_ERR("PowerON Fail (%d)\n", ret);
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}
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rdv->power.power_count++;
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mutex_unlock(&rdv->lock.mutex_power);
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return ret;
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}
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int reviser_power_off(void *drvinfo)
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{
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struct reviser_dev_info *rdv = NULL;
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int ret = 0;
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rdv = (struct reviser_dev_info *)drvinfo;
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mutex_lock(&rdv->lock.mutex_power);
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rdv->power.power_count--;
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if (rdv->power.power_count < 0) {
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LOG_ERR("Power count invalid (%d)\n",
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rdv->power.power_count);
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ret = -EINVAL;
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mutex_unlock(&rdv->lock.mutex_power);
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return ret;
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} else if (rdv->power.power_count == 0) {
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ret = apu_device_power_off(REVISER);
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if (ret < 0)
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LOG_ERR("PowerON Fail (%d)\n", ret);
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}
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mutex_unlock(&rdv->lock.mutex_power);
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return ret;
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}
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