diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c')
-rw-r--r-- | kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c b/kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c new file mode 100644 index 000000000..2be846374 --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c @@ -0,0 +1,139 @@ +/* + * Copyright 2012 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 + */ +#define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object) +#include "priv.h" + +#include <core/client.h> + +#include <nvif/class.h> +#include <nvif/unpack.h> + +struct nv04_disp_root { + struct nvkm_object object; + struct nvkm_disp *disp; +}; + +static int +nv04_disp_scanoutpos(struct nv04_disp_root *root, + void *data, u32 size, int head) +{ + struct nvkm_device *device = root->disp->engine.subdev.device; + struct nvkm_object *object = &root->object; + const u32 hoff = head * 0x2000; + union { + struct nv04_disp_scanoutpos_v0 v0; + } *args = data; + u32 line; + int ret; + + nvif_ioctl(object, "disp scanoutpos size %d\n", size); + if (nvif_unpack(args->v0, 0, 0, false)) { + nvif_ioctl(object, "disp scanoutpos vers %d\n", + args->v0.version); + args->v0.vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0xffff; + args->v0.vtotal = nvkm_rd32(device, 0x680804 + hoff) & 0xffff; + args->v0.vblanke = args->v0.vtotal - 1; + + args->v0.hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0xffff; + args->v0.htotal = nvkm_rd32(device, 0x680824 + hoff) & 0xffff; + args->v0.hblanke = args->v0.htotal - 1; + + /* + * If output is vga instead of digital then vtotal/htotal is + * invalid so we have to give up and trigger the timestamping + * fallback in the drm core. + */ + if (!args->v0.vtotal || !args->v0.htotal) + return -ENOTSUPP; + + args->v0.time[0] = ktime_to_ns(ktime_get()); + line = nvkm_rd32(device, 0x600868 + hoff); + args->v0.time[1] = ktime_to_ns(ktime_get()); + args->v0.hline = (line & 0xffff0000) >> 16; + args->v0.vline = (line & 0x0000ffff); + } else + return ret; + + return 0; +} + +static int +nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) +{ + struct nv04_disp_root *root = nv04_disp_root(object); + union { + struct nv04_disp_mthd_v0 v0; + } *args = data; + int head, ret; + + nvif_ioctl(object, "disp mthd size %d\n", size); + if (nvif_unpack(args->v0, 0, 0, true)) { + nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n", + args->v0.version, args->v0.method, args->v0.head); + mthd = args->v0.method; + head = args->v0.head; + } else + return ret; + + if (head < 0 || head >= 2) + return -ENXIO; + + switch (mthd) { + case NV04_DISP_SCANOUTPOS: + return nv04_disp_scanoutpos(root, data, size, head); + default: + break; + } + + return -EINVAL; +} + +static const struct nvkm_object_func +nv04_disp_root = { + .mthd = nv04_disp_mthd, + .ntfy = nvkm_disp_ntfy, +}; + +static int +nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass, + void *data, u32 size, struct nvkm_object **pobject) +{ + struct nv04_disp_root *root; + + if (!(root = kzalloc(sizeof(*root), GFP_KERNEL))) + return -ENOMEM; + root->disp = disp; + *pobject = &root->object; + + nvkm_object_ctor(&nv04_disp_root, oclass, &root->object); + return 0; +} + +const struct nvkm_disp_oclass +nv04_disp_root_oclass = { + .base.oclass = NV04_DISP, + .base.minver = -1, + .base.maxver = -1, + .ctor = nv04_disp_root_new, +}; |