cc1aeedb98
The infrastructure includes parsing of the firmware image, initialising
FW-side structures, handling the kernel and firmware command
ringbuffers and starting & stopping the firmware processor.
This patch also adds the necessary support code for the META firmware
processor.
Changes since v8:
- Fix documentation for pvr_fwccb_process()
- Corrected license identifiers
Changes since v6:
- Add a minimum retry count to pvr_kccb_reserve_slot_sync()
Changes since v5:
- Add workaround for BRN 71242
- Attempt to recover GPU on MMU flush command failure
Changes since v4:
- Remove use of drm_gem_shmem_get_pages()
- Remove interrupt resource name
Changes since v3:
- Hard reset FW processor on watchdog timeout
- Switch to threaded IRQ
- Rework FW object creation/initialisation to aid hard reset
- Added MODULE_FIRMWARE()
- Use drm_dev_{enter,exit}
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Link: https://lore.kernel.org/r/bb52a8dc84f296b37dc6668dfe8fbaf2ba551139.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
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/* Copyright (c) 2023 Imagination Technologies Ltd. */
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#ifndef PVR_POWER_H
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#define PVR_POWER_H
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#include "pvr_device.h"
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#include <linux/mutex.h>
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#include <linux/pm_runtime.h>
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int pvr_watchdog_init(struct pvr_device *pvr_dev);
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void pvr_watchdog_fini(struct pvr_device *pvr_dev);
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void pvr_device_lost(struct pvr_device *pvr_dev);
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bool pvr_power_is_idle(struct pvr_device *pvr_dev);
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int pvr_power_device_suspend(struct device *dev);
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int pvr_power_device_resume(struct device *dev);
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int pvr_power_device_idle(struct device *dev);
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int pvr_power_reset(struct pvr_device *pvr_dev, bool hard_reset);
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static __always_inline int
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pvr_power_get(struct pvr_device *pvr_dev)
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{
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struct drm_device *drm_dev = from_pvr_device(pvr_dev);
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return pm_runtime_resume_and_get(drm_dev->dev);
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}
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static __always_inline int
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pvr_power_put(struct pvr_device *pvr_dev)
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{
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struct drm_device *drm_dev = from_pvr_device(pvr_dev);
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return pm_runtime_put(drm_dev->dev);
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}
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#endif /* PVR_POWER_H */
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