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, 0, NV_PCRTC_INTR_EN_0, 0);
68	if (nv_two_heads(dev))
69		NVWriteCRTC(dev, 1, NV_PCRTC_INTR_EN_0, 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, 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, 1);
251
252	nv04_crtc_create(dev, 0);
253	if (nv_two_heads(dev))
254		nv04_crtc_create(dev, 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