diff options
author | Ben Skeggs <bskeggs@redhat.com> | 2022-06-01 13:46:30 +0300 |
---|---|---|
committer | Dave Airlie <airlied@redhat.com> | 2022-07-27 02:05:48 +0300 |
commit | 95983aea80038539ebc70e41e73e9bb4eabd1a92 (patch) | |
tree | b84b8c5f8661a87d701c5478b3a7b66122b61b1e /drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c | |
parent | 889fcbe949bdd8470931a90b91f273ca18c510c1 (diff) | |
download | linux-95983aea80038539ebc70e41e73e9bb4eabd1a92.tar.xz |
drm/nouveau/disp: add connector class
Will be used to provide more solid driver interfaces in general, but
the immediate motivation is work towards fixing issues with handling
hotplug/DP IRQ events.
Its use is currently limited to where we support non-polled hotplug
already (ie. any GPU since NV40ish era, where our DCB handling works
well enough), until that gets cleaned up someday.
v2:
- use ?: (lyude)
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c new file mode 100644 index 000000000000..3fbbb6e6a66b --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/uconn.c @@ -0,0 +1,74 @@ +/* + * 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_uconn(p) container_of((p), struct nvkm_conn, object) +#include "conn.h" + +#include <nvif/if0011.h> + +static void * +nvkm_uconn_dtor(struct nvkm_object *object) +{ + struct nvkm_conn *conn = nvkm_uconn(object); + struct nvkm_disp *disp = conn->disp; + + spin_lock(&disp->client.lock); + conn->object.func = NULL; + spin_unlock(&disp->client.lock); + return NULL; +} + +static const struct nvkm_object_func +nvkm_uconn = { + .dtor = nvkm_uconn_dtor, +}; + +int +nvkm_uconn_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject) +{ + struct nvkm_disp *disp = nvkm_udisp(oclass->parent); + struct nvkm_conn *cont, *conn = NULL; + union nvif_conn_args *args = argv; + int ret; + + if (argc != sizeof(args->v0) || args->v0.version != 0) + return -ENOSYS; + + list_for_each_entry(cont, &disp->conns, head) { + if (cont->index == args->v0.id) { + conn = cont; + break; + } + } + + if (!conn) + return -EINVAL; + + ret = -EBUSY; + spin_lock(&disp->client.lock); + if (!conn->object.func) { + nvkm_object_ctor(&nvkm_uconn, oclass, &conn->object); + *pobject = &conn->object; + ret = 0; + } + spin_unlock(&disp->client.lock); + return ret; +} |