diff options
| author | Ben Skeggs <bskeggs@redhat.com> | 2023-09-19 17:56:03 -0400 |
|---|---|---|
| committer | Lyude Paul <lyude@redhat.com> | 2023-09-19 18:21:54 -0400 |
| commit | 0cd7e07181390085742bf623d6af3eef215c0503 (patch) | |
| tree | 82f18709baee60b6a83521677110c36adad9eb4f /drivers/gpu/drm/nouveau/nvif | |
| parent | a69eeb37f90d8f69cb842e9a42fd508bd321882a (diff) | |
drm/nouveau/disp: add output method to fetch edid
- needed to support TMDS EDID on RM
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Danilo Krummrich <me@dakr.org>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230919220442.202488-9-lyude@redhat.com
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvif')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/outp.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/outp.c b/drivers/gpu/drm/nouveau/nvif/outp.c index 7f1daab35a0d..10480142eea5 100644 --- a/drivers/gpu/drm/nouveau/nvif/outp.c +++ b/drivers/gpu/drm/nouveau/nvif/outp.c @@ -210,6 +210,36 @@ nvif_outp_load_detect(struct nvif_outp *outp, u32 loadval) return ret < 0 ? ret : args.load; } +int +nvif_outp_edid_get(struct nvif_outp *outp, u8 **pedid) +{ + struct nvif_outp_edid_get_v0 *args; + int ret; + + args = kmalloc(sizeof(*args), GFP_KERNEL); + if (!args) + return -ENOMEM; + + args->version = 0; + + ret = nvif_mthd(&outp->object, NVIF_OUTP_V0_EDID_GET, args, sizeof(*args)); + NVIF_ERRON(ret, &outp->object, "[EDID_GET] size:%d", args->size); + if (ret) + goto done; + + *pedid = kmalloc(args->size, GFP_KERNEL); + if (!*pedid) { + ret = -ENOMEM; + goto done; + } + + memcpy(*pedid, args->data, args->size); + ret = args->size; +done: + kfree(args); + return ret; +} + enum nvif_outp_detect_status nvif_outp_detect(struct nvif_outp *outp) { |