diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/head.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/head.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.c new file mode 100644 index 000000000..7f5d13d13 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/head.c @@ -0,0 +1,67 @@ +/* + * Copyright 2017 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs <bskeggs@redhat.com> + */ +#include "head.h" + +#include <core/client.h> + +#include <nvif/cl0046.h> +#include <nvif/unpack.h> + +struct nvkm_head * +nvkm_head_find(struct nvkm_disp *disp, int id) +{ + struct nvkm_head *head; + list_for_each_entry(head, &disp->heads, head) { + if (head->id == id) + return head; + } + return NULL; +} + +void +nvkm_head_del(struct nvkm_head **phead) +{ + struct nvkm_head *head = *phead; + if (head) { + HEAD_DBG(head, "dtor"); + list_del(&head->head); + kfree(*phead); + *phead = NULL; + } +} + +int +nvkm_head_new_(const struct nvkm_head_func *func, + struct nvkm_disp *disp, int id) +{ + struct nvkm_head *head; + if (!(head = kzalloc(sizeof(*head), GFP_KERNEL))) + return -ENOMEM; + head->func = func; + head->disp = disp; + head->id = id; + list_add_tail(&head->head, &disp->heads); + HEAD_DBG(head, "ctor"); + return 0; +} |