diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c new file mode 100644 index 000000000000..1ea144ecdb31 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uoutp.c @@ -0,0 +1,104 @@ +/* + * Copyright 2021 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. + */ +#define nvkm_uoutp(p) container_of((p), struct nvkm_outp, object) +#include "outp.h" + +#include <nvif/if0012.h> + +static int +nvkm_uoutp_mthd_noacquire(struct nvkm_outp *outp, u32 mthd, void *argv, u32 argc) +{ + switch (mthd) { + default: + break; + } + + return 1; +} + +static int +nvkm_uoutp_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc) +{ + struct nvkm_outp *outp = nvkm_uoutp(object); + struct nvkm_disp *disp = outp->disp; + int ret; + + mutex_lock(&disp->super.mutex); + + ret = nvkm_uoutp_mthd_noacquire(outp, mthd, argv, argc); + if (ret <= 0) + goto done; + +done: + mutex_unlock(&disp->super.mutex); + return ret; +} + +static void * +nvkm_uoutp_dtor(struct nvkm_object *object) +{ + struct nvkm_outp *outp = nvkm_uoutp(object); + struct nvkm_disp *disp = outp->disp; + + spin_lock(&disp->client.lock); + outp->object.func = NULL; + spin_unlock(&disp->client.lock); + return NULL; +} + +static const struct nvkm_object_func +nvkm_uoutp = { + .dtor = nvkm_uoutp_dtor, + .mthd = nvkm_uoutp_mthd, +}; + +int +nvkm_uoutp_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject) +{ + struct nvkm_disp *disp = nvkm_udisp(oclass->parent); + struct nvkm_outp *outt, *outp = NULL; + union nvif_outp_args *args = argv; + int ret; + + if (argc != sizeof(args->v0) || args->v0.version != 0) + return -ENOSYS; + + list_for_each_entry(outt, &disp->outps, head) { + if (outt->index == args->v0.id) { + outp = outt; + break; + } + } + + if (!outp) + return -EINVAL; + + ret = -EBUSY; + spin_lock(&disp->client.lock); + if (!outp->object.func) { + nvkm_object_ctor(&nvkm_uoutp, oclass, &outp->object); + *pobject = &outp->object; + ret = 0; + } + spin_unlock(&disp->client.lock); + return ret; +} |