drivers/gpu/drm/imagination/pvr_power.h

/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
/* Copyright (c) 2023 Imagination Technologies Ltd. */

#ifndef PVR_POWER_H
#define PVR_POWER_H

#include "pvr_device.h"

#include <linux/mutex.h>
#include <linux/pm_runtime.h>

int pvr_watchdog_init(struct pvr_device *pvr_dev);
void pvr_watchdog_fini(struct pvr_device *pvr_dev);

void pvr_device_lost(struct pvr_device *pvr_dev);

bool pvr_power_is_idle(struct pvr_device *pvr_dev);

int pvr_power_device_suspend(struct device *dev);
int pvr_power_device_resume(struct device *dev);
int pvr_power_device_idle(struct device *dev);

int pvr_power_reset(struct pvr_device *pvr_dev, bool hard_reset);

static __always_inline int
pvr_power_get(struct pvr_device *pvr_dev)
{
	struct drm_device *drm_dev = from_pvr_device(pvr_dev);

	return pm_runtime_resume_and_get(drm_dev->dev);
}

static __always_inline void
pvr_power_put(struct pvr_device *pvr_dev)
{
	struct drm_device *drm_dev = from_pvr_device(pvr_dev);

	pm_runtime_put(drm_dev->dev);
}

int pvr_power_domains_init(struct pvr_device *pvr_dev);
void pvr_power_domains_fini(struct pvr_device *pvr_dev);

/**
 * struct pvr_power_sequence_ops - Platform specific power sequence operations.
 * @init: Pointer to the platform-specific initialization function.
 * @power_on: Pointer to the platform-specific power on function.
 * @power_off: Pointer to the platform-specific power off function.
 */
struct pvr_power_sequence_ops {
	int (*init)(struct pvr_device *pvr_dev);
	int (*power_on)(struct pvr_device *pvr_dev);
	int (*power_off)(struct pvr_device *pvr_dev);
};

extern const struct pvr_power_sequence_ops pvr_power_sequence_ops_manual;
extern const struct pvr_power_sequence_ops pvr_power_sequence_ops_pwrseq;

#endif /* PVR_POWER_H */