drm/nouveau/disp: introduce proper init/fini, separate from create/destroy
[linux-3.10.git] / drivers / gpu / drm / nouveau / nv04_display.c
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
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
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
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
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
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
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
247 nv04_display_fini(struct drm_device *dev)
248 {
249 }
250
251 static void
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
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 }