| 1 | /* SPDX-License-Identifier: MIT */ |
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| 2 | /* |
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| 3 | * Copyright © 2023 Intel Corporation |
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| 4 | */ |
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| 5 | |
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| 6 | #ifndef __INTEL_MODESET_LOCK_H__ |
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| 7 | #define __INTEL_MODESET_LOCK_H__ |
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| 8 | |
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| 9 | #include <linux/types.h> |
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| 10 | |
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| 11 | struct drm_modeset_acquire_ctx; |
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| 12 | struct intel_atomic_state; |
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| 13 | |
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| 14 | void _intel_modeset_lock_begin(struct drm_modeset_acquire_ctx *ctx, |
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| 15 | struct intel_atomic_state *state, |
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| 16 | unsigned int flags, |
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| 17 | int *ret); |
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| 18 | bool _intel_modeset_lock_loop(int *ret); |
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| 19 | void _intel_modeset_lock_end(struct drm_modeset_acquire_ctx *ctx, |
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| 20 | struct intel_atomic_state *state, |
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| 21 | int *ret); |
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| 22 | |
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| 23 | /* |
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| 24 | * Note that one must always use "continue" rather than |
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| 25 | * "break" or "return" to handle errors within the |
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| 26 | * intel_modeset_lock_ctx_retry() block. |
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| 27 | */ |
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| 28 | #define intel_modeset_lock_ctx_retry(ctx, state, flags, ret) \ |
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| 29 | for (_intel_modeset_lock_begin((ctx), (state), (flags), &(ret)); \ |
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| 30 | _intel_modeset_lock_loop(&(ret)); \ |
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| 31 | _intel_modeset_lock_end((ctx), (state), &(ret))) |
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| 32 | |
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| 33 | #endif /* __INTEL_MODESET_LOCK_H__ */ |
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| 34 | |
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