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/drm_crtc_helper.h>
26
27#include "nouveau_drv.h"
28#include "nouveau_reg.h"
29#include "hw.h"
30#include "nouveau_encoder.h"
31#include "nouveau_connector.h"
32#include "nouveau_bo.h"
33#include "nouveau_gem.h"
34#include "nouveau_chan.h"
35
36#include <nvif/if0004.h>
37
38struct nouveau_connector *
39nv04_encoder_get_connector(struct nouveau_encoder *encoder)
40{
41 struct drm_device *dev = to_drm_encoder(encoder)->dev;
42 struct drm_connector *connector;
43 struct drm_connector_list_iter conn_iter;
44 struct nouveau_connector *nv_connector = NULL;
45
46 drm_connector_list_iter_begin(dev, &conn_iter);
47 drm_for_each_connector_iter(connector, &conn_iter) {
48 if (connector->encoder == to_drm_encoder(encoder))
49 nv_connector = nouveau_connector(connector);
50 }
51 drm_connector_list_iter_end(&conn_iter);
52
53 return nv_connector;
54}
55
56static void
57nv04_display_fini(struct drm_device *dev, bool runtime, bool suspend)
58{
59 struct nouveau_drm *drm = nouveau_drm(dev);
60 struct nv04_display *disp = nv04_display(dev);
61 struct drm_crtc *crtc;
62
63 /* Disable flip completion events. */
64 nvif_event_block(&disp->flip);
65
66 /* Disable vblank interrupts. */
67 NVWriteCRTC(dev, head: 0, NV_PCRTC_INTR_EN_0, val: 0);
68 if (nv_two_heads(dev))
69 NVWriteCRTC(dev, head: 1, NV_PCRTC_INTR_EN_0, val: 0);
70
71 if (!runtime)
72 cancel_work_sync(&drm->hpd_work);
73
74 if (!suspend)
75 return;
76
77 /* Un-pin FB and cursors so they'll be evicted to system memory. */
78 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
79 struct drm_framebuffer *fb = crtc->primary->fb;
80 struct nouveau_bo *nvbo;
81
82 if (!fb || !fb->obj[0])
83 continue;
84 nvbo = nouveau_gem_object(fb->obj[0]);
85 nouveau_bo_unpin(nvbo);
86 }
87
88 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
89 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
90 if (nv_crtc->cursor.nvbo) {
91 if (nv_crtc->cursor.set_offset)
92 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
93 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
94 }
95 }
96}
97
98static int
99nv04_display_init(struct drm_device *dev, bool resume, bool runtime)
100{
101 struct nv04_display *disp = nv04_display(dev);
102 struct nouveau_drm *drm = nouveau_drm(dev);
103 struct nouveau_encoder *encoder;
104 struct drm_crtc *crtc;
105 int ret;
106
107 /* meh.. modeset apparently doesn't setup all the regs and depends
108 * on pre-existing state, for now load the state of the card *before*
109 * nouveau was loaded, and then do a modeset.
110 *
111 * best thing to do probably is to make save/restore routines not
112 * save/restore "pre-load" state, but more general so we can save
113 * on suspend too.
114 */
115 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
116 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
117 nv_crtc->save(&nv_crtc->base);
118 }
119
120 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
121 encoder->enc_save(&encoder->base.base);
122
123 /* Enable flip completion events. */
124 nvif_event_allow(&disp->flip);
125
126 if (!resume)
127 return 0;
128
129 /* Re-pin FB/cursors. */
130 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
131 struct drm_framebuffer *fb = crtc->primary->fb;
132 struct nouveau_bo *nvbo;
133
134 if (!fb || !fb->obj[0])
135 continue;
136 nvbo = nouveau_gem_object(fb->obj[0]);
137 ret = nouveau_bo_pin(nvbo, NOUVEAU_GEM_DOMAIN_VRAM, true);
138 if (ret)
139 NV_ERROR(drm, "Could not pin framebuffer\n");
140 }
141
142 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
143 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
144 if (!nv_crtc->cursor.nvbo)
145 continue;
146
147 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo,
148 NOUVEAU_GEM_DOMAIN_VRAM, true);
149 if (!ret && nv_crtc->cursor.set_offset)
150 ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
151 if (ret)
152 NV_ERROR(drm, "Could not pin/map cursor.\n");
153 }
154
155 /* Force CLUT to get re-loaded during modeset. */
156 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
157 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
158
159 nv_crtc->lut.depth = 0;
160 }
161
162 /* This should ensure we don't hit a locking problem when someone
163 * wakes us up via a connector. We should never go into suspend
164 * while the display is on anyways.
165 */
166 if (runtime)
167 return 0;
168
169 /* Restore mode. */
170 drm_helper_resume_force_mode(dev);
171
172 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
173 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
174
175 if (!nv_crtc->cursor.nvbo)
176 continue;
177
178 if (nv_crtc->cursor.set_offset)
179 nv_crtc->cursor.set_offset(nv_crtc,
180 nv_crtc->cursor.nvbo->offset);
181 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
182 nv_crtc->cursor_saved_y);
183 }
184
185 return 0;
186}
187
188static void
189nv04_display_destroy(struct drm_device *dev)
190{
191 struct nv04_display *disp = nv04_display(dev);
192 struct nouveau_drm *drm = nouveau_drm(dev);
193 struct nouveau_encoder *encoder;
194 struct nouveau_crtc *nv_crtc;
195
196 /* Restore state */
197 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.base.head)
198 encoder->enc_restore(&encoder->base.base);
199
200 list_for_each_entry(nv_crtc, &dev->mode_config.crtc_list, base.head)
201 nv_crtc->restore(&nv_crtc->base);
202
203 nouveau_hw_save_vga_fonts(dev, save: 0);
204
205 nvif_event_dtor(&disp->flip);
206
207 nouveau_display(dev)->priv = NULL;
208 vfree(disp);
209
210 nvif_object_unmap(&drm->client.device.object);
211}
212
213int
214nv04_display_create(struct drm_device *dev)
215{
216 struct nouveau_drm *drm = nouveau_drm(dev);
217 struct nvkm_i2c *i2c = nvxx_i2c(&drm->client.device);
218 struct dcb_table *dcb = &drm->vbios.dcb;
219 struct drm_connector *connector, *ct;
220 struct drm_encoder *encoder;
221 struct nouveau_encoder *nv_encoder;
222 struct nouveau_crtc *crtc;
223 struct nv04_display *disp;
224 int i, ret;
225
226 disp = vzalloc(sizeof(*disp));
227 if (!disp)
228 return -ENOMEM;
229
230 disp->drm = drm;
231
232 nvif_object_map(&drm->client.device.object, NULL, 0);
233
234 nouveau_display(dev)->priv = disp;
235 nouveau_display(dev)->dtor = nv04_display_destroy;
236 nouveau_display(dev)->init = nv04_display_init;
237 nouveau_display(dev)->fini = nv04_display_fini;
238
239 /* Pre-nv50 doesn't support atomic, so don't expose the ioctls */
240 dev->driver_features &= ~DRIVER_ATOMIC;
241
242 /* Request page flip completion event. */
243 if (drm->channel) {
244 ret = nvif_event_ctor(&drm->channel->nvsw, "kmsFlip", 0, nv04_flip_complete,
245 true, NULL, 0, &disp->flip);
246 if (ret)
247 return ret;
248 }
249
250 nouveau_hw_save_vga_fonts(dev, save: 1);
251
252 nv04_crtc_create(dev, index: 0);
253 if (nv_two_heads(dev))
254 nv04_crtc_create(dev, index: 1);
255
256 for (i = 0; i < dcb->entries; i++) {
257 struct dcb_output *dcbent = &dcb->entry[i];
258
259 connector = nouveau_connector_create(dev, dcbent->connector);
260 if (IS_ERR(connector))
261 continue;
262
263 switch (dcbent->type) {
264 case DCB_OUTPUT_ANALOG:
265 ret = nv04_dac_create(connector, dcbent);
266 break;
267 case DCB_OUTPUT_LVDS:
268 case DCB_OUTPUT_TMDS:
269 ret = nv04_dfp_create(connector, dcbent);
270 break;
271 case DCB_OUTPUT_TV:
272 if (dcbent->location == DCB_LOC_ON_CHIP)
273 ret = nv17_tv_create(connector, dcbent);
274 else
275 ret = nv04_tv_create(connector, dcbent);
276 break;
277 default:
278 NV_WARN(drm, "DCB type %d not known\n", dcbent->type);
279 continue;
280 }
281
282 if (ret)
283 continue;
284 }
285
286 list_for_each_entry_safe(connector, ct,
287 &dev->mode_config.connector_list, head) {
288 if (!connector->possible_encoders) {
289 NV_WARN(drm, "%s has no encoders, removing\n",
290 connector->name);
291 connector->funcs->destroy(connector);
292 }
293 }
294
295 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
296 struct nouveau_encoder *nv_encoder = nouveau_encoder(encoder);
297 struct nvkm_i2c_bus *bus =
298 nvkm_i2c_bus_find(i2c, nv_encoder->dcb->i2c_index);
299 nv_encoder->i2c = bus ? &bus->i2c : NULL;
300 }
301
302 /* Save previous state */
303 list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head)
304 crtc->save(&crtc->base);
305
306 list_for_each_entry(nv_encoder, &dev->mode_config.encoder_list, base.base.head)
307 nv_encoder->enc_save(&nv_encoder->base.base);
308
309 nouveau_overlay_init(dev);
310
311 return 0;
312}
313

source code of linux/drivers/gpu/drm/nouveau/dispnv04/disp.c