106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
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/*
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* Copyright 2017 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Ben Skeggs <bskeggs@redhat.com>
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*/
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#include "head.h"
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#include <core/client.h>
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#include <nvif/cl0046.h>
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#include <nvif/unpack.h>
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struct nvkm_head *
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nvkm_head_find(struct nvkm_disp *disp, int id)
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{
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struct nvkm_head *head;
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list_for_each_entry(head, &disp->heads, head) {
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if (head->id == id)
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return head;
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}
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return NULL;
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}
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int
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nvkm_head_mthd_scanoutpos(struct nvkm_object *object,
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struct nvkm_head *head, void *data, u32 size)
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{
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union {
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struct nv04_disp_scanoutpos_v0 v0;
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} *args = data;
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int ret = -ENOSYS;
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nvif_ioctl(object, "head scanoutpos size %d\n", size);
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if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
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nvif_ioctl(object, "head scanoutpos vers %d\n",
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args->v0.version);
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head->func->state(head, &head->arm);
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args->v0.vtotal = head->arm.vtotal;
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args->v0.vblanks = head->arm.vblanks;
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args->v0.vblanke = head->arm.vblanke;
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args->v0.htotal = head->arm.htotal;
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args->v0.hblanks = head->arm.hblanks;
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args->v0.hblanke = head->arm.hblanke;
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/* We don't support reading htotal/vtotal on pre-NV50 VGA,
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* so we have to give up and trigger the timestamping
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* fallback in the drm core.
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*/
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if (!args->v0.vtotal || !args->v0.htotal)
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return -ENOTSUPP;
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args->v0.time[0] = ktime_to_ns(ktime_get());
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head->func->rgpos(head, &args->v0.hline, &args->v0.vline);
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args->v0.time[1] = ktime_to_ns(ktime_get());
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} else
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return ret;
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return 0;
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}
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void
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nvkm_head_del(struct nvkm_head **phead)
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{
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struct nvkm_head *head = *phead;
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if (head) {
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HEAD_DBG(head, "dtor");
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list_del(&head->head);
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kfree(*phead);
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*phead = NULL;
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}
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}
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int
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nvkm_head_new_(const struct nvkm_head_func *func,
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struct nvkm_disp *disp, int id)
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{
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struct nvkm_head *head;
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if (!(head = kzalloc(sizeof(*head), GFP_KERNEL)))
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return -ENOMEM;
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head->func = func;
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head->disp = disp;
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head->id = id;
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list_add_tail(&head->head, &disp->heads);
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HEAD_DBG(head, "ctor");
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return 0;
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}
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