1 /*
2 * Copyright 2009 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 * Author: Ben Skeggs
23 */
24
25 #include "drmP.h"
26 #include "drm.h"
27 #include "drm_crtc_helper.h"
28
29 #include "nouveau_drv.h"
30 #include "nouveau_fb.h"
31 #include "nouveau_hw.h"
32 #include "nouveau_encoder.h"
33 #include "nouveau_connector.h"
34
35 static void nv04_vblank_crtc0_isr(struct drm_device *);
36 static void nv04_vblank_crtc1_isr(struct drm_device *);
37
38 static void
nv04_display_store_initial_head_owner(struct drm_device * dev)39 nv04_display_store_initial_head_owner(struct drm_device *dev)
40 {
41 struct drm_nouveau_private *dev_priv = dev->dev_private;
42
43 if (dev_priv->chipset != 0x11) {
44 dev_priv->crtc_owner = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_44);
45 return;
46 }
47
48 /* reading CR44 is broken on nv11, so we attempt to infer it */
49 if (nvReadMC(dev, NV_PBUS_DEBUG_1) & (1 << 28)) /* heads tied, restore both */
50 dev_priv->crtc_owner = 0x4;
51 else {
52 uint8_t slaved_on_A, slaved_on_B;
53 bool tvA = false;
54 bool tvB = false;
55
56 slaved_on_B = NVReadVgaCrtc(dev, 1, NV_CIO_CRE_PIXEL_INDEX) &
57 0x80;
58 if (slaved_on_B)
59 tvB = !(NVReadVgaCrtc(dev, 1, NV_CIO_CRE_LCD__INDEX) &
60 MASK(NV_CIO_CRE_LCD_LCD_SELECT));
61
62 slaved_on_A = NVReadVgaCrtc(dev, 0, NV_CIO_CRE_PIXEL_INDEX) &
63 0x80;
64 if (slaved_on_A)
65 tvA = !(NVReadVgaCrtc(dev, 0, NV_CIO_CRE_LCD__INDEX) &
66 MASK(NV_CIO_CRE_LCD_LCD_SELECT));
67
68 if (slaved_on_A && !tvA)
69 dev_priv->crtc_owner = 0x0;
70 else if (slaved_on_B && !tvB)
71 dev_priv->crtc_owner = 0x3;
72 else if (slaved_on_A)
73 dev_priv->crtc_owner = 0x0;
74 else if (slaved_on_B)
75 dev_priv->crtc_owner = 0x3;
76 else
77 dev_priv->crtc_owner = 0x0;
78 }
79 }
80
81 int
nv04_display_early_init(struct drm_device * dev)82 nv04_display_early_init(struct drm_device *dev)
83 {
84 /* Make the I2C buses accessible. */
85 if (!nv_gf4_disp_arch(dev)) {
86 uint32_t pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);
87
88 if (!(pmc_enable & 1))
89 nv_wr32(dev, NV03_PMC_ENABLE, pmc_enable | 1);
90 }
91
92 /* Unlock the VGA CRTCs. */
93 NVLockVgaCrtcs(dev, false);
94
95 /* Make sure the CRTCs aren't in slaved mode. */
96 if (nv_two_heads(dev)) {
97 nv04_display_store_initial_head_owner(dev);
98 NVSetOwner(dev, 0);
99 }
100
101 return 0;
102 }
103
104 void
nv04_display_late_takedown(struct drm_device * dev)105 nv04_display_late_takedown(struct drm_device *dev)
106 {
107 struct drm_nouveau_private *dev_priv = dev->dev_private;
108
109 if (nv_two_heads(dev))
110 NVSetOwner(dev, dev_priv->crtc_owner);
111
112 NVLockVgaCrtcs(dev, true);
113 }
114
115 int
nv04_display_create(struct drm_device * dev)116 nv04_display_create(struct drm_device *dev)
117 {
118 struct drm_nouveau_private *dev_priv = dev->dev_private;
119 struct dcb_table *dcb = &dev_priv->vbios.dcb;
120 struct drm_connector *connector, *ct;
121 struct drm_encoder *encoder;
122 struct drm_crtc *crtc;
123 int i, ret;
124
125 NV_DEBUG_KMS(dev, "\n");
126
127 nouveau_hw_save_vga_fonts(dev, 1);
128
129 nv04_crtc_create(dev, 0);
130 if (nv_two_heads(dev))
131 nv04_crtc_create(dev, 1);
132
133 for (i = 0; i < dcb->entries; i++) {
134 struct dcb_entry *dcbent = &dcb->entry[i];
135
136 connector = nouveau_connector_create(dev, dcbent->connector);
137 if (IS_ERR(connector))
138 continue;
139
140 switch (dcbent->type) {
141 case OUTPUT_ANALOG:
142 ret = nv04_dac_create(connector, dcbent);
143 break;
144 case OUTPUT_LVDS:
145 case OUTPUT_TMDS:
146 ret = nv04_dfp_create(connector, dcbent);
147 break;
148 case OUTPUT_TV:
149 if (dcbent->location == DCB_LOC_ON_CHIP)
150 ret = nv17_tv_create(connector, dcbent);
151 else
152 ret = nv04_tv_create(connector, dcbent);
153 break;
154 default:
155 NV_WARN(dev, "DCB type %d not known\n", dcbent->type);
156 continue;
157 }
158
159 if (ret)
160 continue;
161 }
162
163 list_for_each_entry_safe(connector, ct,
164 &dev->mode_config.connector_list, head) {
165 if (!connector->encoder_ids[0]) {
166 NV_WARN(dev, "%s has no encoders, removing\n",
167 drm_get_connector_name(connector));
168 connector->funcs->destroy(connector);
169 }
170 }
171
172 /* Save previous state */
173 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
174 crtc->funcs->save(crtc);
175
176 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
177 struct drm_encoder_helper_funcs *func = encoder->helper_private;
178
179 func->save(encoder);
180 }
181
182 nouveau_irq_register(dev, 24, nv04_vblank_crtc0_isr);
183 nouveau_irq_register(dev, 25, nv04_vblank_crtc1_isr);
184 return 0;
185 }
186
187 void
nv04_display_destroy(struct drm_device * dev)188 nv04_display_destroy(struct drm_device *dev)
189 {
190 struct drm_encoder *encoder;
191 struct drm_crtc *crtc;
192
193 NV_DEBUG_KMS(dev, "\n");
194
195 nouveau_irq_unregister(dev, 24);
196 nouveau_irq_unregister(dev, 25);
197
198 /* Turn every CRTC off. */
199 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
200 struct drm_mode_set modeset = {
201 .crtc = crtc,
202 };
203
204 crtc->funcs->set_config(&modeset);
205 }
206
207 /* Restore state */
208 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
209 struct drm_encoder_helper_funcs *func = encoder->helper_private;
210
211 func->restore(encoder);
212 }
213
214 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
215 crtc->funcs->restore(crtc);
216
217 nouveau_hw_save_vga_fonts(dev, 0);
218 }
219
220 int
nv04_display_init(struct drm_device * dev)221 nv04_display_init(struct drm_device *dev)
222 {
223 struct drm_encoder *encoder;
224 struct drm_crtc *crtc;
225
226 /* meh.. modeset apparently doesn't setup all the regs and depends
227 * on pre-existing state, for now load the state of the card *before*
228 * nouveau was loaded, and then do a modeset.
229 *
230 * best thing to do probably is to make save/restore routines not
231 * save/restore "pre-load" state, but more general so we can save
232 * on suspend too.
233 */
234 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
235 struct drm_encoder_helper_funcs *func = encoder->helper_private;
236
237 func->restore(encoder);
238 }
239
240 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
241 crtc->funcs->restore(crtc);
242
243 return 0;
244 }
245
246 void
nv04_display_fini(struct drm_device * dev)247 nv04_display_fini(struct drm_device *dev)
248 {
249 }
250
251 static void
nv04_vblank_crtc0_isr(struct drm_device * dev)252 nv04_vblank_crtc0_isr(struct drm_device *dev)
253 {
254 nv_wr32(dev, NV_CRTC0_INTSTAT, NV_CRTC_INTR_VBLANK);
255 drm_handle_vblank(dev, 0);
256 }
257
258 static void
nv04_vblank_crtc1_isr(struct drm_device * dev)259 nv04_vblank_crtc1_isr(struct drm_device *dev)
260 {
261 nv_wr32(dev, NV_CRTC1_INTSTAT, NV_CRTC_INTR_VBLANK);
262 drm_handle_vblank(dev, 1);
263 }
264