summaryrefslogtreecommitdiff
path: root/linux-core/nv50_sor.c
blob: 75909c822f6ed07843b556af9419bfcf50822339 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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.
 *
 */

#include "nv50_output.h"

static int nv50_sor_validate_mode(struct nv50_output *output, struct nouveau_hw_mode *mode)
{
	NV50_DEBUG("\n");

	if (mode->clock > 165000) /* no dual link until we figure it out completely */
		return MODE_CLOCK_HIGH;

	if (mode->clock < 25000)
		return MODE_CLOCK_LOW;

	if (output->native_mode->hdisplay > 0 && output->native_mode->vdisplay > 0) {
		if (mode->hdisplay > output->native_mode->hdisplay || mode->vdisplay > output->native_mode->vdisplay)
			return MODE_PANEL;
	}

	return MODE_OK;
}

static int nv50_sor_execute_mode(struct nv50_output *output, bool disconnect)
{
	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
	struct nv50_crtc *crtc = output->crtc;
	struct nouveau_hw_mode *desired_mode = NULL;

	uint32_t offset = nv50_output_or_offset(output) * 0x40;

	uint32_t mode_ctl = NV50_SOR_MODE_CTRL_OFF;

	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));

	if (disconnect) {
		NV50_DEBUG("Disconnecting SOR\n");
		OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl);
		return 0;
	}

	desired_mode = (crtc->use_native_mode ? crtc->native_mode : crtc->mode);

	if (output->type == OUTPUT_LVDS) {
		mode_ctl |= NV50_SOR_MODE_CTRL_LVDS;
	} else {
		mode_ctl |= NV50_SOR_MODE_CTRL_TMDS;
		if (desired_mode->clock > 165000)
			mode_ctl |= NV50_SOR_MODE_CTRL_TMDS_DUAL_LINK;
	}

	if (crtc->index == 1)
		mode_ctl |= NV50_SOR_MODE_CTRL_CRTC1;
	else
		mode_ctl |= NV50_SOR_MODE_CTRL_CRTC0;

	if (desired_mode->flags & V_NHSYNC)
		mode_ctl |= NV50_SOR_MODE_CTRL_NHSYNC;

	if (desired_mode->flags & V_NVSYNC)
		mode_ctl |= NV50_SOR_MODE_CTRL_NVSYNC;

	/* TODO: DPMS ?????? */

	OUT_MODE(NV50_SOR0_MODE_CTRL + offset, mode_ctl);

	return 0;
}

static int nv50_sor_set_clock_mode(struct nv50_output *output)
{
	struct drm_nouveau_private *dev_priv = output->dev->dev_private;
	struct nv50_crtc *crtc = output->crtc;

	uint32_t limit = 165000;
	struct nouveau_hw_mode *hw_mode;

	NV50_DEBUG("or %d\n", nv50_output_or_offset(output));

	/* We don't yet know what to do, if anything at all. */
	if (output->type == OUTPUT_LVDS)
		return 0;

	if (crtc->use_native_mode)
		hw_mode = crtc->native_mode;
	else
		hw_mode = crtc->mode;

	/* 0x70000 was a late addition to nv, mentioned as fixing tmds initialisation on certain gpu's. */
	/* I presume it's some kind of clock setting, but what precisely i do not know. */
	NV_WRITE(NV50_PDISPLAY_SOR_CLK_CLK_CTRL2(nv50_output_or_offset(output)), 0x70000 | ((hw_mode->clock > limit) ? 0x101 : 0));

	return 0;
}

static int nv50_sor_destroy(struct nv50_output *output)
{
	struct drm_device *dev = output->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv50_display *display = nv50_get_display(dev);

	NV50_DEBUG("\n");

	if (!display || !output)
		return -EINVAL;

	list_del(&output->head);

	kfree(output->native_mode);
	if (dev_priv->free_output)
		dev_priv->free_output(output);

	return 0;
}

int nv50_sor_create(struct drm_device *dev, int dcb_entry)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv50_output *output = NULL;
	struct nv50_display *display = NULL;
	struct dcb_entry *entry = NULL;
	int rval = 0;

	NV50_DEBUG("\n");

	/* This allows the public layer to do it's thing. */
	if (dev_priv->alloc_output)
		output = dev_priv->alloc_output(dev);

	if (!output)
		return -ENOMEM;

	output->dev = dev;

	display = nv50_get_display(dev);
	if (!display) {
		rval = -EINVAL;
		goto out;
	}

	entry = &dev_priv->dcb_table.entry[dcb_entry];
	if (!entry) {
		rval = -EINVAL;
		goto out;
	}

	switch (entry->type) {
		case DCB_OUTPUT_TMDS:
			output->type = OUTPUT_TMDS;
			DRM_INFO("Detected a TMDS output\n");
			break;
		case DCB_OUTPUT_LVDS:
			output->type = OUTPUT_LVDS;
			DRM_INFO("Detected a LVDS output\n");
			break;
		default:
			rval = -EINVAL;
			goto out;
	}

	output->dcb_entry = dcb_entry;
	output->bus = entry->bus;

	list_add_tail(&output->head, &display->outputs);

	output->native_mode = kzalloc(sizeof(struct nouveau_hw_mode), GFP_KERNEL);
	if (!output->native_mode) {
		rval = -ENOMEM;
		goto out;
	}

	/* Set function pointers. */
	output->validate_mode = nv50_sor_validate_mode;
	output->execute_mode = nv50_sor_execute_mode;
	output->set_clock_mode = nv50_sor_set_clock_mode;
	output->detect = NULL;
	output->destroy = nv50_sor_destroy;

	/* Some default state, unknown what it precisely means. */
	if (output->type == OUTPUT_TMDS) {
		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_00C(nv50_output_or_offset(output)), 0x03010700);
		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_010(nv50_output_or_offset(output)), 0x0000152f);
		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_014(nv50_output_or_offset(output)), 0x00000000);
		NV_WRITE(NV50_PDISPLAY_SOR_REGS_UNK_018(nv50_output_or_offset(output)), 0x00245af8);
	}

	return 0;

out:
	if (output->native_mode)
		kfree(output->native_mode);
	if (dev_priv->free_output)
		dev_priv->free_output(output);
	return rval;
}