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 "nv50.h"
25#include "outp.h"
26
27#include <core/client.h>
28#include <subdev/timer.h>
29
30#include <nvif/class.h>
31#include <nvif/unpack.h>
32
33int
34nv50_dac_power(NV50_DISP_MTHD_V1)
35{
36	const u32 doff = outp->or * 0x800;
37	union {
38		struct nv50_disp_dac_pwr_v0 v0;
39	} *args = data;
40	u32 stat;
41	int ret;
42
43	nv_ioctl(object, "disp dac pwr size %d\n", size);
44	if (nvif_unpack(args->v0, 0, 0, false)) {
45		nv_ioctl(object, "disp dac pwr vers %d state %d data %d "
46				 "vsync %d hsync %d\n",
47			 args->v0.version, args->v0.state, args->v0.data,
48			 args->v0.vsync, args->v0.hsync);
49		stat  = 0x00000040 * !args->v0.state;
50		stat |= 0x00000010 * !args->v0.data;
51		stat |= 0x00000004 * !args->v0.vsync;
52		stat |= 0x00000001 * !args->v0.hsync;
53	} else
54		return ret;
55
56	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
57	nv_mask(priv, 0x61a004 + doff, 0xc000007f, 0x80000000 | stat);
58	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
59	return 0;
60}
61
62int
63nv50_dac_sense(NV50_DISP_MTHD_V1)
64{
65	union {
66		struct nv50_disp_dac_load_v0 v0;
67	} *args = data;
68	const u32 doff = outp->or * 0x800;
69	u32 loadval;
70	int ret;
71
72	nv_ioctl(object, "disp dac load size %d\n", size);
73	if (nvif_unpack(args->v0, 0, 0, false)) {
74		nv_ioctl(object, "disp dac load vers %d data %08x\n",
75			 args->v0.version, args->v0.data);
76		if (args->v0.data & 0xfff00000)
77			return -EINVAL;
78		loadval = args->v0.data;
79	} else
80		return ret;
81
82	nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80150000);
83	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
84
85	nv_wr32(priv, 0x61a00c + doff, 0x00100000 | loadval);
86	mdelay(9);
87	udelay(500);
88	loadval = nv_mask(priv, 0x61a00c + doff, 0xffffffff, 0x00000000);
89
90	nv_mask(priv, 0x61a004 + doff, 0x807f0000, 0x80550000);
91	nv_wait(priv, 0x61a004 + doff, 0x80000000, 0x00000000);
92
93	nv_debug(priv, "DAC%d sense: 0x%08x\n", outp->or, loadval);
94	if (!(loadval & 0x80000000))
95		return -ETIMEDOUT;
96
97	args->v0.load = (loadval & 0x38000000) >> 27;
98	return 0;
99}
100