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