drm/connector: Allow max possible encoders to attach to a connector
[sfrench/cifs-2.6.git] / drivers / gpu / drm / nouveau / dispnv04 / disp.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 <drm/drmP.h>
26 #include <drm/drm_crtc_helper.h>
27
28 #include "nouveau_drv.h"
29 #include "nouveau_reg.h"
30 #include "hw.h"
31 #include "nouveau_encoder.h"
32 #include "nouveau_connector.h"
33 #include "nouveau_bo.h"
34
35 #include <nvif/if0004.h>
36
37 static void
38 nv04_display_fini(struct drm_device *dev, bool suspend)
39 {
40         struct nv04_display *disp = nv04_display(dev);
41         struct drm_crtc *crtc;
42
43         /* Disable flip completion events. */
44         nvif_notify_put(&disp->flip);
45
46         /* Disable vblank interrupts. */
47         NVWriteCRTC(dev, 0, NV_PCRTC_INTR_EN_0, 0);
48         if (nv_two_heads(dev))
49                 NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 0);
50
51         if (!suspend)
52                 return;
53
54         /* Un-pin FB and cursors so they'll be evicted to system memory. */
55         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
56                 struct nouveau_framebuffer *nouveau_fb;
57
58                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
59                 if (!nouveau_fb || !nouveau_fb->nvbo)
60                         continue;
61
62                 nouveau_bo_unpin(nouveau_fb->nvbo);
63         }
64
65         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
66                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
67                 if (nv_crtc->cursor.nvbo) {
68                         if (nv_crtc->cursor.set_offset)
69                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
70                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
71                 }
72         }
73 }
74
75 static int
76 nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
77 {
78         struct nv04_display *disp = nv04_display(dev);
79         struct nouveau_drm *drm = nouveau_drm(dev);
80         struct nouveau_encoder *encoder;
81         struct drm_crtc *crtc;
82         int ret;
83
84         /* meh.. modeset apparently doesn't setup all the regs and depends
85          * on pre-existing state, for now load the state of the card *before*
86          * nouveau was loaded, and then do a modeset.
87          *
88          * best thing to do probably is to make save/restore routines not
89          * save/restore "pre-load" state, but more general so we can save
90          * on suspend too.
91          */
92         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
93                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
94                 nv_crtc->save(&nv_crtc->base);
95         }
96
97         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
98                 encoder->enc_save(&encoder->base.base);
99
100         /* Enable flip completion events. */
101         nvif_notify_get(&disp->flip);
102
103         if (!resume)
104                 return 0;
105
106         /* Re-pin FB/cursors. */
107         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
108                 struct nouveau_framebuffer *nouveau_fb;
109
110                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
111                 if (!nouveau_fb || !nouveau_fb->nvbo)
112                         continue;
113
114                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
115                 if (ret)
116                         NV_ERROR(drm, "Could not pin framebuffer\n");
117         }
118
119         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
120                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
121                 if (!nv_crtc->cursor.nvbo)
122                         continue;
123
124                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
125                 if (!ret && nv_crtc->cursor.set_offset)
126                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
127                 if (ret)
128                         NV_ERROR(drm, "Could not pin/map cursor.\n");
129         }
130
131         /* Force CLUT to get re-loaded during modeset. */
132         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
133                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
134
135                 nv_crtc->lut.depth = 0;
136         }
137
138         /* This should ensure we don't hit a locking problem when someone
139          * wakes us up via a connector.  We should never go into suspend
140          * while the display is on anyways.
141          */
142         if (runtime)
143                 return 0;
144
145         /* Restore mode. */
146         drm_helper_resume_force_mode(dev);
147
148         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
149                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
150
151                 if (!nv_crtc->cursor.nvbo)
152                         continue;
153
154                 if (nv_crtc->cursor.set_offset)
155                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
156                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
157                                                  nv_crtc->cursor_saved_y);
158         }
159
160         return 0;
161 }
162
163 static void
164 nv04_display_destroy(struct drm_device *dev)
165 {
166         struct nv04_display *disp = nv04_display(dev);
167         struct nouveau_drm *drm = nouveau_drm(dev);
168         struct nouveau_encoder *encoder;
169         struct nouveau_crtc *nv_crtc;
170
171         /* Restore state */
172         list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
173                 encoder->enc_restore(&encoder->base.base);
174
175         list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
176                 nv_crtc->restore(&nv_crtc->base);
177
178         nouveau_hw_save_vga_fonts(dev, 0);
179
180         nvif_notify_fini(&disp->flip);
181
182         nouveau_display(dev)->priv = NULL;
183         kfree(disp);
184
185         nvif_object_unmap(&drm->client.device.object);
186 }
187
188 int
189 nv04_display_create(struct drm_device *dev)
190 {
191         struct nouveau_drm *drm = nouveau_drm(dev);
192         struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
193         struct dcb_table *dcb = &drm->vbios.dcb;
194         struct drm_connector *connector, *ct;
195         struct drm_encoder *encoder;
196         struct nouveau_encoder *nv_encoder;
197         struct nouveau_crtc *crtc;
198         struct nv04_display *disp;
199         int i, ret;
200
201         disp = kzalloc(sizeof(*disp), GFP_KERNEL);
202         if (!disp)
203                 return -ENOMEM;
204
205         nvif_object_map(&drm->client.device.object, NULL, 0);
206
207         nouveau_display(dev)->priv = disp;
208         nouveau_display(dev)->dtor = nv04_display_destroy;
209         nouveau_display(dev)->init = nv04_display_init;
210         nouveau_display(dev)->fini = nv04_display_fini;
211
212         /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
213         dev->driver->driver_features &= ~DRIVER_ATOMIC;
214
215         /* Request page flip completion event. */
216         if (drm->nvsw.client) {
217                 nvif_notify_init(&drm->nvsw, nv04_flip_complete,
218                                  false, NV04_NVSW_NTFY_UEVENT,
219                                  NULL, 0, 0, &disp->flip);
220         }
221
222         nouveau_hw_save_vga_fonts(dev, 1);
223
224         nv04_crtc_create(dev, 0);
225         if (nv_two_heads(dev))
226                 nv04_crtc_create(dev, 1);
227
228         for (i = 0; i < dcb->entries; i++) {
229                 struct dcb_output *dcbent = &dcb->entry[i];
230
231                 connector = nouveau_connector_create(dev, dcbent);
232                 if (IS_ERR(connector))
233                         continue;
234
235                 switch (dcbent->type) {
236                 case DCB_OUTPUT_ANALOG:
237                         ret = nv04_dac_create(connector, dcbent);
238                         break;
239                 case DCB_OUTPUT_LVDS:
240                 case DCB_OUTPUT_TMDS:
241                         ret = nv04_dfp_create(connector, dcbent);
242                         break;
243                 case DCB_OUTPUT_TV:
244                         if (dcbent->location == DCB_LOC_ON_CHIP)
245                                 ret = nv17_tv_create(connector, dcbent);
246                         else
247                                 ret = nv04_tv_create(connector, dcbent);
248                         break;
249                 default:
250                         NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
251                         continue;
252                 }
253
254                 if (ret)
255                         continue;
256         }
257
258         list_for_each_entry_safe(connector, ct,
259                                  &dev->mode_config.connector_list, head) {
260                 if (!connector->possible_encoders) {
261                         NV_WARN(drm, "%s has no encoders, removing\n",
262                                 connector->name);
263                         connector->funcs->destroy(connector);
264                 }
265         }
266
267         list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
268                 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
269                 struct nvkm_i2c_bus *bus =
270                         nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
271                 nv_encoder->i2c = bus ? &bus->i2c : NULL;
272         }
273
274         /* Save previous state */
275         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
276                 crtc->save(&crtc->base);
277
278         list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
279                 nv_encoder->enc_save(&nv_encoder->base.base);
280
281         nouveau_overlay_init(dev);
282
283         return 0;
284 }