diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_modeset_lock.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_modeset_lock.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_modeset_lock.h b/drivers/gpu/drm/i915/display/intel_modeset_lock.h new file mode 100644 index 000000000000..edb5099bcd99 --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_modeset_lock.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2023 Intel Corporation + */ + +#ifndef __INTEL_MODESET_LOCK_H__ +#define __INTEL_MODESET_LOCK_H__ + +#include <linux/types.h> + +struct drm_modeset_acquire_ctx; +struct intel_atomic_state; + +void _intel_modeset_lock_begin(struct drm_modeset_acquire_ctx *ctx, + struct intel_atomic_state *state, + unsigned int flags, + int *ret); +bool _intel_modeset_lock_loop(int *ret); +void _intel_modeset_lock_end(struct drm_modeset_acquire_ctx *ctx, + struct intel_atomic_state *state, + int *ret); + +/* + * Note that one must always use "continue" rather than + * "break" or "return" to handle errors within the + * intel_modeset_lock_ctx_retry() block. + */ +#define intel_modeset_lock_ctx_retry(ctx, state, flags, ret) \ + for (_intel_modeset_lock_begin((ctx), (state), (flags), &(ret)); \ + _intel_modeset_lock_loop(&(ret)); \ + _intel_modeset_lock_end((ctx), (state), &(ret))) + +#endif /* __INTEL_MODESET_LOCK_H__ */ |