1/*
2 * Copyright 2012 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Authors: Ben Skeggs
23 */
24#include "channv50.h"
25#include "rootnv50.h"
26
27#include <subdev/timer.h>
28
29static void
30nv50_disp_pioc_fini(struct nv50_disp_chan *chan)
31{
32	struct nv50_disp *disp = chan->root->disp;
33	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
34	struct nvkm_device *device = subdev->device;
35	int chid = chan->chid;
36
37	nvkm_mask(device, 0x610200 + (chid * 0x10), 0x00000001, 0x00000000);
38	if (nvkm_msec(device, 2000,
39		if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x00030000))
40			break;
41	) < 0) {
42		nvkm_error(subdev, "ch %d timeout: %08x\n", chid,
43			   nvkm_rd32(device, 0x610200 + (chid * 0x10)));
44	}
45}
46
47static int
48nv50_disp_pioc_init(struct nv50_disp_chan *chan)
49{
50	struct nv50_disp *disp = chan->root->disp;
51	struct nvkm_subdev *subdev = &disp->base.engine.subdev;
52	struct nvkm_device *device = subdev->device;
53	int chid = chan->chid;
54
55	nvkm_wr32(device, 0x610200 + (chid * 0x10), 0x00002000);
56	if (nvkm_msec(device, 2000,
57		if (!(nvkm_rd32(device, 0x610200 + (chid * 0x10)) & 0x00030000))
58			break;
59	) < 0) {
60		nvkm_error(subdev, "ch %d timeout0: %08x\n", chid,
61			   nvkm_rd32(device, 0x610200 + (chid * 0x10)));
62		return -EBUSY;
63	}
64
65	nvkm_wr32(device, 0x610200 + (chid * 0x10), 0x00000001);
66	if (nvkm_msec(device, 2000,
67		u32 tmp = nvkm_rd32(device, 0x610200 + (chid * 0x10));
68		if ((tmp & 0x00030000) == 0x00010000)
69			break;
70	) < 0) {
71		nvkm_error(subdev, "ch %d timeout1: %08x\n", chid,
72			   nvkm_rd32(device, 0x610200 + (chid * 0x10)));
73		return -EBUSY;
74	}
75
76	return 0;
77}
78
79const struct nv50_disp_chan_func
80nv50_disp_pioc_func = {
81	.init = nv50_disp_pioc_init,
82	.fini = nv50_disp_pioc_fini,
83};
84