sna_display_fake.c revision 42542f5f 
1/*
2 * Copyright © 2013 Intel Corporation
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 (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 *	Chris Wilson <chris@chris-wilson.co.uk>
25 *
26 */
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include "sna.h"
33
34static bool add_fake_output(struct sna *sna, bool late);
35
36static void
37sna_crtc_dpms(xf86CrtcPtr crtc, int mode)
38{
39}
40
41static char *outputs_for_crtc(xf86CrtcPtr crtc, char *outputs, int max)
42{
43	xf86CrtcConfigPtr config = XF86_CRTC_CONFIG_PTR(crtc->scrn);
44	int len, i;
45
46	for (i = len = 0; i < config->num_output; i++) {
47		xf86OutputPtr output = config->output[i];
48
49		if (output->crtc != crtc)
50			continue;
51
52		len += snprintf(outputs+len, max-len, "%s, ", output->name);
53	}
54	assert(len >= 2);
55	outputs[len-2] = '\0';
56
57	return outputs;
58}
59
60static const char *rotation_to_str(Rotation rotation)
61{
62	switch (rotation & RR_Rotate_All) {
63	case 0:
64	case RR_Rotate_0: return "normal";
65	case RR_Rotate_90: return "left";
66	case RR_Rotate_180: return "inverted";
67	case RR_Rotate_270: return "right";
68	default: return "unknown";
69	}
70}
71
72static const char *reflection_to_str(Rotation rotation)
73{
74	switch (rotation & RR_Reflect_All) {
75	case 0: return "none";
76	case RR_Reflect_X: return "X axis";
77	case RR_Reflect_Y: return "Y axis";
78	case RR_Reflect_X | RR_Reflect_Y: return "X and Y axes";
79	default: return "invalid";
80	}
81}
82
83static Bool
84sna_crtc_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
85			Rotation rotation, int x, int y)
86{
87	char outputs[256];
88
89	xf86DrvMsg(crtc->scrn->scrnIndex, X_INFO,
90		   "switch to mode %dx%d on %s, position (%d, %d), rotation %s, reflection %s\n",
91		   mode->HDisplay, mode->VDisplay,
92		   outputs_for_crtc(crtc, outputs, sizeof(outputs)),
93		   x, y, rotation_to_str(rotation), reflection_to_str(rotation));
94
95	return TRUE;
96}
97
98static void
99sna_crtc_gamma_set(xf86CrtcPtr crtc,
100		       CARD16 *red, CARD16 *green, CARD16 *blue, int size)
101{
102}
103
104static void
105sna_crtc_destroy(xf86CrtcPtr crtc)
106{
107}
108
109static const xf86CrtcFuncsRec sna_crtc_funcs = {
110	.dpms = sna_crtc_dpms,
111	.set_mode_major = sna_crtc_set_mode_major,
112	.gamma_set = sna_crtc_gamma_set,
113	.destroy = sna_crtc_destroy,
114};
115
116static void
117sna_output_create_resources(xf86OutputPtr output)
118{
119}
120
121static Bool
122sna_output_set_property(xf86OutputPtr output, Atom property,
123			    RRPropertyValuePtr value)
124{
125	return TRUE;
126}
127
128static Bool
129sna_output_get_property(xf86OutputPtr output, Atom property)
130{
131	return FALSE;
132}
133
134static void
135sna_output_dpms(xf86OutputPtr output, int dpms)
136{
137}
138
139static xf86OutputStatus
140sna_output_detect(xf86OutputPtr output)
141{
142	DBG(("%s(%s) has user modes? %d\n",
143	     __FUNCTION__, output->name,
144	     output->randr_output && output->randr_output->numUserModes));
145
146	if (output->randr_output && output->randr_output->numUserModes) {
147		xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(output->scrn);
148
149		if (xf86_config->output[xf86_config->num_output-1] == output)
150			add_fake_output(to_sna(output->scrn), true);
151
152		return XF86OutputStatusConnected;
153	}
154
155	return XF86OutputStatusDisconnected;
156}
157
158static Bool
159sna_output_mode_valid(xf86OutputPtr output, DisplayModePtr mode)
160{
161	if (mode->type & M_T_DEFAULT)
162		return MODE_BAD;
163
164	return MODE_OK;
165}
166
167static DisplayModePtr
168sna_output_get_modes(xf86OutputPtr output)
169{
170	return NULL;
171}
172
173static void
174sna_output_destroy(xf86OutputPtr output)
175{
176}
177
178static const xf86OutputFuncsRec sna_output_funcs = {
179	.create_resources = sna_output_create_resources,
180#ifdef RANDR_12_INTERFACE
181	.set_property = sna_output_set_property,
182	.get_property = sna_output_get_property,
183#endif
184	.dpms = sna_output_dpms,
185	.detect = sna_output_detect,
186	.mode_valid = sna_output_mode_valid,
187
188	.get_modes = sna_output_get_modes,
189	.destroy = sna_output_destroy
190};
191
192static Bool
193sna_mode_resize(ScrnInfoPtr scrn, int width, int height)
194{
195	ScreenPtr screen = scrn->pScreen;
196	PixmapPtr new_front;
197
198	DBG(("%s (%d, %d) -> (%d, %d)\n", __FUNCTION__,
199	     scrn->virtualX, scrn->virtualY,
200	     width, height));
201
202	if (scrn->virtualX == width && scrn->virtualY == height)
203		return TRUE;
204
205	assert(to_sna_from_screen(screen)->front);
206	assert(screen->GetScreenPixmap(screen) == to_sna_from_screen(screen)->front);
207
208	DBG(("%s: creating new framebuffer %dx%d\n",
209	     __FUNCTION__, width, height));
210
211	new_front = screen->CreatePixmap(screen,
212					 width, height, scrn->depth,
213					 0);
214	if (!new_front)
215		return FALSE;
216
217	scrn->virtualX = width;
218	scrn->virtualY = height;
219	scrn->displayWidth = width;
220
221	screen->SetScreenPixmap(new_front);
222	assert(screen->GetScreenPixmap(screen) == new_front);
223	assert(to_sna_from_screen(screen)->front == new_front);
224
225	screen->DestroyPixmap(new_front);
226
227	return TRUE;
228}
229
230static const xf86CrtcConfigFuncsRec sna_mode_funcs = {
231	sna_mode_resize
232};
233
234static bool add_fake_output(struct sna *sna, bool late)
235{
236	ScrnInfoPtr scrn = sna->scrn;
237	xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
238	xf86OutputPtr output;
239	xf86CrtcPtr crtc;
240	RROutputPtr clones[32];
241	RRCrtcPtr crtcs[32];
242	char buf[80];
243	int i, len;
244
245	if (sna->mode.num_fake >= 32)
246		return false;
247
248	DBG(("%s(late=%d, num_fake=%d)\n", __FUNCTION__, late, sna->mode.num_fake+1));
249
250	crtc = xf86CrtcCreate(scrn, &sna_crtc_funcs);
251	if (crtc == NULL)
252		return false;
253
254	len = sprintf(buf, "VIRTUAL%d", sna->mode.num_fake+1);
255	output = xf86OutputCreate(scrn, &sna_output_funcs, buf);
256	if (!output) {
257		xf86CrtcDestroy(crtc);
258		return false;
259	}
260
261	output->mm_width = 0;
262	output->mm_height = 0;
263	output->interlaceAllowed = FALSE;
264	output->subpixel_order = SubPixelNone;
265
266	output->possible_crtcs = ~((1 << sna->mode.num_real_crtc) - 1);
267	output->possible_clones = ~((1 << sna->mode.num_real_output) - 1);
268
269	if (late) {
270		ScreenPtr screen = xf86ScrnToScreen(scrn);
271
272		crtc->randr_crtc = RRCrtcCreate(screen, crtc);
273		output->randr_output = RROutputCreate(screen, buf, len, output);
274		if (crtc->randr_crtc == NULL || output->randr_output == NULL) {
275			xf86OutputDestroy(output);
276			xf86CrtcDestroy(crtc);
277			return false;
278		}
279
280		RRPostPendingProperties(output->randr_output);
281
282		for (i = sna->mode.num_real_output; i < xf86_config->num_output; i++)
283			clones[i - sna->mode.num_real_output] = xf86_config->output[i]->randr_output;
284		assert(i - sna->mode.num_real_output == sna->mode.num_fake + 1);
285
286		for (i = sna->mode.num_real_crtc; i < xf86_config->num_crtc; i++)
287			crtcs[i - sna->mode.num_real_crtc] = xf86_config->crtc[i]->randr_crtc;
288		assert(i - sna->mode.num_real_crtc == sna->mode.num_fake + 1);
289
290		for (i = sna->mode.num_real_output; i < xf86_config->num_output; i++) {
291			RROutputPtr rr_output = xf86_config->output[i]->randr_output;
292
293			if (!RROutputSetCrtcs(rr_output, crtcs, sna->mode.num_fake + 1) ||
294			    !RROutputSetClones(rr_output, clones, sna->mode.num_fake + 1))
295				goto err;
296		}
297
298		RRCrtcSetRotations(crtc->randr_crtc,
299				   RR_Rotate_All | RR_Reflect_All);
300	}
301
302	sna->mode.num_fake++;
303	xf86DrvMsg(scrn->scrnIndex, X_INFO,
304		   "Enabled output %s\n",
305		   output->name);
306	return true;
307
308err:
309	for (i = 0; i < xf86_config->num_output; i++) {
310		output = xf86_config->output[i];
311		if (output->driver_private)
312			continue;
313
314		xf86OutputDestroy(output);
315	}
316
317	for (i = 0; i < xf86_config->num_crtc; i++) {
318		crtc = xf86_config->crtc[i];
319		if (crtc->driver_private)
320			continue;
321		xf86CrtcDestroy(crtc);
322	}
323	sna->mode.num_fake = -1;
324	return false;
325}
326
327bool sna_mode_fake_init(struct sna *sna, int num_fake)
328{
329	bool ret;
330
331	if (num_fake == 0)
332		return true;
333
334	if (sna->mode.num_real_crtc == 0) {
335		xf86CrtcConfigInit(sna->scrn, &sna_mode_funcs);
336		xf86CrtcSetSizeRange(sna->scrn, 1, 1, INT16_MAX, INT16_MAX);
337	}
338
339	ret = true;
340	while (ret && num_fake--)
341		ret = add_fake_output(sna, false);
342	return ret;
343}
344