summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nv04_display.c
blob: 1715e1464b7d500c1691bb8c63a11d5fe72a5621 (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
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
/*
 * Copyright 2009 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.
 *
 * Author: Ben Skeggs
 */

#include "drmP.h"
#include "drm.h"
#include "drm_crtc_helper.h"

#include "nouveau_drv.h"
#include "nouveau_fb.h"
#include "nouveau_hw.h"
#include "nouveau_encoder.h"
#include "nouveau_connector.h"

static void nv04_vblank_crtc0_isr(struct drm_device *);
static void nv04_vblank_crtc1_isr(struct drm_device *);

static void
nv04_display_store_initial_head_owner(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (dev_priv->chipset != 0x11) {
		dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
		return;
	}

	/* reading CR44 is broken on nv11, so we attempt to infer it */
	if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28))	/* heads tied, restore both */
		dev_priv->crtc_owner = 0x4;
	else {
		uint8_t slaved_on_A, slaved_on_B;
		bool tvA = false;
		bool tvB = false;

		slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
									0x80;
		if (slaved_on_B)
			tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
					MASK(NV_CIO_CRE_LCD_LCD_SELECT));

		slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
									0x80;
		if (slaved_on_A)
			tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
					MASK(NV_CIO_CRE_LCD_LCD_SELECT));

		if (slaved_on_A && !tvA)
			dev_priv->crtc_owner = 0x0;
		else if (slaved_on_B && !tvB)
			dev_priv->crtc_owner = 0x3;
		else if (slaved_on_A)
			dev_priv->crtc_owner = 0x0;
		else if (slaved_on_B)
			dev_priv->crtc_owner = 0x3;
		else
			dev_priv->crtc_owner = 0x0;
	}
}

int
nv04_display_early_init(struct drm_device *dev)
{
	/* Make the I2C buses accessible. */
	if (!nv_gf4_disp_arch(dev)) {
		uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);

		if (!(pmc_enable & 1))
			nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable | 1);
	}

	/* Unlock the VGA CRTCs. */
	NVLockVgaCrtcs(dev, false);

	/* Make sure the CRTCs aren't in slaved mode. */
	if (nv_two_heads(dev)) {
		nv04_display_store_initial_head_owner(dev);
		NVSetOwner(dev, 0);
	}

	return 0;
}

void
nv04_display_late_takedown(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (nv_two_heads(dev))
		NVSetOwner(dev, dev_priv->crtc_owner);

	NVLockVgaCrtcs(dev, true);
}

int
nv04_display_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct dcb_table *dcb = &dev_priv->vbios.dcb;
	struct drm_connector *connector, *ct;
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;
	int i, ret;

	NV_DEBUG_KMS(dev, "\n");

	nouveau_hw_save_vga_fonts(dev, 1);

	drm_mode_config_init(dev);
	drm_mode_create_scaling_mode_property(dev);
	drm_mode_create_dithering_property(dev);

	dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;

	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	switch (dev_priv->card_type) {
	case NV_04:
		dev->mode_config.max_width = 2048;
		dev->mode_config.max_height = 2048;
		break;
	default:
		dev->mode_config.max_width = 4096;
		dev->mode_config.max_height = 4096;
		break;
	}

	dev->mode_config.fb_base = dev_priv->fb_phys;

	nv04_crtc_create(dev, 0);
	if (nv_two_heads(dev))
		nv04_crtc_create(dev, 1);

	for (i = 0; i < dcb->entries; i++) {
		struct dcb_entry *dcbent = &dcb->entry[i];

		connector = nouveau_connector_create(dev, dcbent->connector);
		if (IS_ERR(connector))
			continue;

		switch (dcbent->type) {
		case OUTPUT_ANALOG:
			ret = nv04_dac_create(connector, dcbent);
			break;
		case OUTPUT_LVDS:
		case OUTPUT_TMDS:
			ret = nv04_dfp_create(connector, dcbent);
			break;
		case OUTPUT_TV:
			if (dcbent->location == DCB_LOC_ON_CHIP)
				ret = nv17_tv_create(connector, dcbent);
			else
				ret = nv04_tv_create(connector, dcbent);
			break;
		default:
			NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
			continue;
		}

		if (ret)
			continue;
	}

	list_for_each_entry_safe(connector, ct,
				 &dev->mode_config.connector_list, head) {
		if (!connector->encoder_ids[0]) {
			NV_WARN(dev, "%s has no encoders, removing\n",
				drm_get_connector_name(connector));
			connector->funcs->destroy(connector);
		}
	}

	/* Save previous state */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->save(crtc);

	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->save(encoder);
	}

	nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
	nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
	return 0;
}

void
nv04_display_destroy(struct drm_device *dev)
{
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	NV_DEBUG_KMS(dev, "\n");

	nouveau_irq_unregister(dev, 24);
	nouveau_irq_unregister(dev, 25);

	/* Turn every CRTC off. */
	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
		struct drm_mode_set modeset = {
			.crtc = crtc,
		};

		crtc->funcs->set_config(&modeset);
	}

	/* Restore state */
	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->restore(encoder);
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->restore(crtc);

	drm_mode_config_cleanup(dev);

	nouveau_hw_save_vga_fonts(dev, 0);
}

int
nv04_display_init(struct drm_device *dev)
{
	struct drm_encoder *encoder;
	struct drm_crtc *crtc;

	/* meh.. modeset apparently doesn't setup all the regs and depends
	 * on pre-existing state, for now load the state of the card *before*
	 * nouveau was loaded, and then do a modeset.
	 *
	 * best thing to do probably is to make save/restore routines not
	 * save/restore "pre-load" state, but more general so we can save
	 * on suspend too.
	 */
	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
		struct drm_encoder_helper_funcs *func = encoder->helper_private;

		func->restore(encoder);
	}

	list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
		crtc->funcs->restore(crtc);

	return 0;
}

static void
nv04_vblank_crtc0_isr(struct drm_device *dev)
{
	nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
	drm_handle_vblank(dev, 0);
}

static void
nv04_vblank_crtc1_isr(struct drm_device *dev)
{
	nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
	drm_handle_vblank(dev, 1);
}