| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|
| 2 | #ifndef __DRM_RANDOM_H__ |
|---|
| 3 | #define __DRM_RANDOM_H__ |
|---|
| 4 | |
|---|
| 5 | /* This is a temporary home for a couple of utility functions that should |
|---|
| 6 | * be transposed to lib/ at the earliest convenience. |
|---|
| 7 | */ |
|---|
| 8 | |
|---|
| 9 | #include <linux/random.h> |
|---|
| 10 | |
|---|
| 11 | #define DRM_RND_STATE_INITIALIZER(seed__) ({ \ |
|---|
| 12 | struct rnd_state state__; \ |
|---|
| 13 | prandom_seed_state(&state__, (seed__)); \ |
|---|
| 14 | state__; \ |
|---|
| 15 | }) |
|---|
| 16 | |
|---|
| 17 | #define DRM_RND_STATE(name__, seed__) \ |
|---|
| 18 | struct rnd_state name__ = DRM_RND_STATE_INITIALIZER(seed__) |
|---|
| 19 | |
|---|
| 20 | unsigned int *drm_random_order(unsigned int count, |
|---|
| 21 | struct rnd_state *state); |
|---|
| 22 | void drm_random_reorder(unsigned int *order, |
|---|
| 23 | unsigned int count, |
|---|
| 24 | struct rnd_state *state); |
|---|
| 25 | u32 drm_prandom_u32_max_state(u32 ep_ro, |
|---|
| 26 | struct rnd_state *state); |
|---|
| 27 | |
|---|
| 28 | #endif /* !__DRM_RANDOM_H__ */ |
|---|
| 29 | |
|---|
