omx cam: add test app
[glsdk/omapdrmtest.git] / util / display-kms.c
1 /*
2  * Copyright (C) 2011 Texas Instruments
3  * Author: Rob Clark <rob.clark@linaro.org>
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms of the GNU General Public License version 2 as published by
7  * the Free Software Foundation.
8  *
9  * This program is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12  * more details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program.  If not, see <http://www.gnu.org/licenses/>.
16  */
18 #ifdef HAVE_CONFIG_H
19 #include "config.h"
20 #endif
22 #include "util.h"
24 #include <xf86drmMode.h>
27 /* NOTE: healthy dose of recycling from libdrm modetest app.. */
29 /*
30  * Mode setting with the kernel interfaces is a bit of a chore.
31  * First you have to find the connector in question and make sure the
32  * requested mode is available.
33  * Then you need to find the encoder attached to that connector so you
34  * can bind it with a free crtc.
35  */
36 struct connector {
37         uint32_t id;
38         char mode_str[64];
39         drmModeModeInfo *mode;
40         drmModeEncoder *encoder;
41         int crtc;
42         int pipe;
43 };
45 #define to_display_kms(x) container_of(x, struct display_kms, base)
46 struct display_kms {
47         struct display base;
49         uint32_t connectors_count;
50         struct connector connector[10];
51         drmModePlane *ovr[10];
53         int scheduled_flips, completed_flips;
54         uint32_t bo_flags;
55         drmModeResPtr resources;
56         drmModePlaneRes *plane_resources;
57         struct buffer *current;
58 };
60 #define to_buffer_kms(x) container_of(x, struct buffer_kms, base)
61 struct buffer_kms {
62         struct buffer base;
63         uint32_t fb_id;
64 };
66 static struct omap_bo *
67 alloc_bo(struct display *disp, uint32_t bpp, uint32_t width, uint32_t height,
68                 uint32_t *bo_handle, uint32_t *pitch)
69 {
70         struct display_kms *disp_kms = to_display_kms(disp);
71         struct omap_bo *bo;
72         uint32_t bo_flags = disp_kms->bo_flags;
74         if ((bo_flags & OMAP_BO_TILED) == OMAP_BO_TILED) {
75                 bo_flags &= ~OMAP_BO_TILED;
76                 if (bpp == 8) {
77                         bo_flags |= OMAP_BO_TILED_8;
78                 } else if (bpp == 16) {
79                         bo_flags |= OMAP_BO_TILED_16;
80                 } else if (bpp == 32) {
81                         bo_flags |= OMAP_BO_TILED_32;
82                 }
83         }
85         bo_flags |= OMAP_BO_WC;
87         if (bo_flags & OMAP_BO_TILED) {
88                 bo = omap_bo_new_tiled(disp->dev, width, height, bo_flags);
89         } else {
90                 bo = omap_bo_new(disp->dev, width * height * bpp / 8, bo_flags);
91         }
93         if (bo) {
94                 *bo_handle = omap_bo_handle(bo);
95                 *pitch = width * bpp / 8;
96                 if (bo_flags & OMAP_BO_TILED)
97                         *pitch = ALIGN2(*pitch, PAGE_SHIFT);
98         }
100         return bo;
103 static struct buffer *
104 alloc_buffer(struct display *disp, uint32_t fourcc, uint32_t w, uint32_t h)
106         struct buffer_kms *buf_kms;
107         struct buffer *buf;
108         uint32_t bo_handles[4] = {0}, offsets[4] = {0};
109         int ret;
111         buf_kms = calloc(1, sizeof(*buf_kms));
112         if (!buf_kms) {
113                 ERROR("allocation failed");
114                 return NULL;
115         }
116         buf = &buf_kms->base;
118         buf->fourcc = fourcc;
119         buf->width = w;
120         buf->height = h;
121         buf->multiplanar = true;
123         buf->nbo = 1;
125         if (!fourcc)
126                 fourcc = FOURCC('A','R','2','4');
128         switch(fourcc) {
129         case FOURCC('A','R','2','4'):
130                 buf->nbo = 1;
131                 buf->bo[0] = alloc_bo(disp, 32, buf->width, buf->height,
132                                 &bo_handles[0], &buf->pitches[0]);
133                 break;
134         case FOURCC('U','Y','V','Y'):
135         case FOURCC('Y','U','Y','V'):
136                 buf->nbo = 1;
137                 buf->bo[0] = alloc_bo(disp, 16, buf->width, buf->height,
138                                 &bo_handles[0], &buf->pitches[0]);
139                 break;
140         case FOURCC('N','V','1','2'):
141                 if (disp->multiplanar) {
142                         buf->nbo = 2;
143                         buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height,
144                                         &bo_handles[0], &buf->pitches[0]);
145                         buf->bo[1] = alloc_bo(disp, 16, buf->width/2, buf->height/2,
146                                         &bo_handles[1], &buf->pitches[1]);
147                 } else {
148                         buf->nbo = 1;
149                         buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height * 3 / 2,
150                                         &bo_handles[0], &buf->pitches[0]);
151                         bo_handles[1] = bo_handles[0];
152                         buf->pitches[1] = buf->pitches[0];
153                         offsets[1] = buf->width * buf->height;
154                         buf->multiplanar = false;
155                 }
156                 break;
157         case FOURCC('I','4','2','0'):
158                 buf->nbo = 3;
159                 buf->bo[0] = alloc_bo(disp, 8, buf->width, buf->height,
160                                 &bo_handles[0], &buf->pitches[0]);
161                 buf->bo[1] = alloc_bo(disp, 8, buf->width/2, buf->height/2,
162                                 &bo_handles[1], &buf->pitches[1]);
163                 buf->bo[2] = alloc_bo(disp, 8, buf->width/2, buf->height/2,
164                                 &bo_handles[2], &buf->pitches[2]);
165                 break;
166         default:
167                 ERROR("invalid format: 0x%08x", fourcc);
168                 goto fail;
169         }
171         ret = drmModeAddFB2(disp->fd, buf->width, buf->height, fourcc,
172                         bo_handles, buf->pitches, offsets, &buf_kms->fb_id, 0);
173         if (ret) {
174                 ERROR("drmModeAddFB2 failed: %s (%d)", strerror(errno), ret);
175                 goto fail;
176         }
178         return buf;
180 fail:
181         // XXX cleanup
182         return NULL;
185 static struct buffer **
186 alloc_buffers(struct display *disp, uint32_t n,
187                 uint32_t fourcc, uint32_t w, uint32_t h)
189         struct buffer **bufs;
190         uint32_t i = 0;
192         bufs = calloc(n, sizeof(*bufs));
193         if (!bufs) {
194                 ERROR("allocation failed");
195                 goto fail;
196         }
198         for (i = 0; i < n; i++) {
199                 bufs[i] = alloc_buffer(disp, fourcc, w, h);
200                 if (!bufs[i]) {
201                         ERROR("allocation failed");
202                         goto fail;
203                 }
204         }
206         return bufs;
208 fail:
209         // XXX cleanup
210         return NULL;
213 static struct buffer **
214 get_buffers(struct display *disp, uint32_t n)
216         return alloc_buffers(disp, n, 0, disp->width, disp->height);
219 static struct buffer **
220 get_vid_buffers(struct display *disp, uint32_t n,
221                 uint32_t fourcc, uint32_t w, uint32_t h)
223         return alloc_buffers(disp, n, fourcc, w, h);
226 static void
227 page_flip_handler(int fd, unsigned int frame,
228                 unsigned int sec, unsigned int usec, void *data)
230         struct display *disp = data;
231         struct display_kms *disp_kms = to_display_kms(disp);
233         disp_kms->completed_flips++;
235         MSG("Page flip: frame=%d, sec=%d, usec=%d, remaining=%d", frame, sec, usec,
236                         disp_kms->scheduled_flips - disp_kms->completed_flips);
239 static int
240 post_buffer(struct display *disp, struct buffer *buf)
242         struct display_kms *disp_kms = to_display_kms(disp);
243         struct buffer_kms *buf_kms = to_buffer_kms(buf);
244         int ret, last_err = 0, x = 0;
245         uint32_t i;
247         for (i = 0; i < disp_kms->connectors_count; i++) {
248                 struct connector *connector = &disp_kms->connector[i];
250                 if (! connector->mode) {
251                         continue;
252                 }
254                 if (! disp_kms->current) {
255                         /* first buffer we flip to, setup the mode (since this can't
256                          * be done earlier without a buffer to scanout)
257                          */
258                         MSG("Setting mode %s on connector %d, crtc %d",
259                                         connector->mode_str, connector->id, connector->crtc);
261                         ret = drmModeSetCrtc(disp->fd, connector->crtc, buf_kms->fb_id,
262                                         x, 0, &connector->id, 1, connector->mode);
264                         x += connector->mode->hdisplay;
265                 } else {
266                         ret = drmModePageFlip(disp->fd, connector->crtc, buf_kms->fb_id,
267                                         DRM_MODE_PAGE_FLIP_EVENT, disp);
268                         disp_kms->scheduled_flips++;
269                 }
271                 if (ret) {
272                         ERROR("Could not post buffer on crtc %d: %s (%d)",
273                                         connector->crtc, strerror(errno), ret);
274                         last_err = ret;
275                         /* well, keep trying the reset of the connectors.. */
276                 }
277         }
279         /* if we flipped, wait for all flips to complete! */
280         while (disp_kms->scheduled_flips > disp_kms->completed_flips) {
281                 drmEventContext evctx = {
282                                 .version = DRM_EVENT_CONTEXT_VERSION,
283                                 .page_flip_handler = page_flip_handler,
284                 };
285                 struct timeval timeout = {
286                                 .tv_sec = 3,
287                                 .tv_usec = 0,
288                 };
289                 fd_set fds;
291                 FD_ZERO(&fds);
292                 FD_SET(disp->fd, &fds);
294                 ret = select(disp->fd + 1, &fds, NULL, NULL, &timeout);
295                 if (ret <= 0) {
296                         if (errno == EAGAIN) {
297                                 continue;    /* keep going */
298                         } else {
299                                 ERROR("Timeout waiting for flip complete: %s (%d)",
300                                                 strerror(errno), ret);
301                                 last_err = ret;
302                                 break;
303                         }
304                 }
306                 drmHandleEvent(disp->fd, &evctx);
307         }
309         disp_kms->current = buf;
311         return last_err;
314 static int
315 post_vid_buffer(struct display *disp, struct buffer *buf,
316                 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
318         struct display_kms *disp_kms = to_display_kms(disp);
319         struct buffer_kms *buf_kms = to_buffer_kms(buf);
320         int ret = 0;
321         uint32_t i, j;
323         /* ensure we have the overlay setup: */
324         for (i = 0; i < disp_kms->connectors_count; i++) {
325                 struct connector *connector = &disp_kms->connector[i];
326                 uint32_t used_planes = 0;
327                 drmModeModeInfo *mode = connector->mode;
329                 if (! mode) {
330                         continue;
331                 }
333                 if (! disp_kms->ovr[i]) {
335                         for (j = 0; j < disp_kms->plane_resources->count_planes; j++) {
336                                 drmModePlane *ovr = drmModeGetPlane(disp->fd,
337                                                 disp_kms->plane_resources->planes[j]);
338                                 if ((ovr->possible_crtcs & (1 << connector->pipe)) &&
339                                                 !(used_planes & (1 << j))) {
340                                         disp_kms->ovr[i] = ovr;
341                                         used_planes |= (1 << j);
342                                         break;
343                                 }
344                         }
345                 }
347                 if (! disp_kms->ovr[i]) {
348                         MSG("Could not find plane for crtc %d", connector->crtc);
349                         ret = -1;
350                         /* carry on and see if we can find at least one usable plane */
351                         continue;
352                 }
354                 ret = drmModeSetPlane(disp->fd, disp_kms->ovr[i]->plane_id,
355                                 connector->crtc, buf_kms->fb_id, 0,
356                                 /* make video fullscreen: */
357                                 0, 0, mode->hdisplay, mode->vdisplay,
358                                 /* source/cropping coordinates are given in Q16 */
359                                 x << 16, y << 16, w << 16, h << 16);
360                 if (ret) {
361                         ERROR("failed to enable plane %d: %s",
362                                         disp_kms->ovr[i]->plane_id, strerror(errno));
363                 }
364         }
366         return ret;
369 static void
370 close_kms(struct display *disp)
374 static void
375 connector_find_mode(struct display *disp, struct connector *c)
377         struct display_kms *disp_kms = to_display_kms(disp);
378         drmModeConnector *connector;
379         int i, j;
381         /* First, find the connector & mode */
382         c->mode = NULL;
383         for (i = 0; i < disp_kms->resources->count_connectors; i++) {
384                 connector = drmModeGetConnector(disp->fd,
385                                 disp_kms->resources->connectors[i]);
387                 if (!connector) {
388                         ERROR("could not get connector %i: %s",
389                                         disp_kms->resources->connectors[i], strerror(errno));
390                         drmModeFreeConnector(connector);
391                         continue;
392                 }
394                 if (!connector->count_modes) {
395                         drmModeFreeConnector(connector);
396                         continue;
397                 }
399                 if (connector->connector_id != c->id) {
400                         drmModeFreeConnector(connector);
401                         continue;
402                 }
404                 for (j = 0; j < connector->count_modes; j++) {
405                         c->mode = &connector->modes[j];
406                         if (!strcmp(c->mode->name, c->mode_str))
407                                 break;
408                 }
410                 /* Found it, break out */
411                 if (c->mode)
412                         break;
414                 drmModeFreeConnector(connector);
415         }
417         if (!c->mode) {
418                 ERROR("failed to find mode \"%s\"", c->mode_str);
419                 return;
420         }
422         /* Now get the encoder */
423         for (i = 0; i < disp_kms->resources->count_encoders; i++) {
424                 c->encoder = drmModeGetEncoder(disp->fd,
425                                 disp_kms->resources->encoders[i]);
427                 if (!c->encoder) {
428                         ERROR("could not get encoder %i: %s",
429                                         disp_kms->resources->encoders[i], strerror(errno));
430                         drmModeFreeEncoder(c->encoder);
431                         continue;
432                 }
434                 if (c->encoder->encoder_id  == connector->encoder_id)
435                         break;
437                 drmModeFreeEncoder(c->encoder);
438         }
440         if (c->crtc == -1)
441                 c->crtc = c->encoder->crtc_id;
443         /* and figure out which crtc index it is: */
444         for (i = 0; i < disp_kms->resources->count_crtcs; i++) {
445                 if (c->crtc == (int)disp_kms->resources->crtcs[i]) {
446                         c->pipe = i;
447                         break;
448                 }
449         }
452 void
453 disp_kms_usage(void)
455         MSG("KMS Display Options:");
456         MSG("\t-1 \t\tforce single-plane buffers");
457         MSG("\t-t <tiled-mode>\t8, 16, 32, or auto");
458         MSG("\t-s <connector_id>:<mode>\tset a mode");
459         MSG("\t-s <connector_id>@<crtc_id>:<mode>\tset a mode");
462 struct display *
463 disp_kms_open(int argc, char **argv)
465         struct display_kms *disp_kms = NULL;
466         struct display *disp;
467         int i;
469         disp_kms = calloc(1, sizeof(*disp_kms));
470         if (!disp_kms) {
471                 ERROR("allocation failed");
472                 goto fail;
473         }
474         disp = &disp_kms->base;
476         disp->fd = drmOpen("omapdrm", NULL);
477         if (disp->fd < 0) {
478                 ERROR("could not open drm device: %s (%d)", strerror(errno), errno);
479                 goto fail;
480         }
482         disp->dev = omap_device_new(disp->fd);
483         if (!disp->dev) {
484                 ERROR("couldn't create device");
485                 goto fail;
486         }
488         disp->get_buffers = get_buffers;
489         disp->get_vid_buffers = get_vid_buffers;
490         disp->post_buffer = post_buffer;
491         disp->post_vid_buffer = post_vid_buffer;
492         disp->close = close_kms;
494         disp_kms->resources = drmModeGetResources(disp->fd);
495         if (!disp_kms->resources) {
496                 ERROR("drmModeGetResources failed: %s", strerror(errno));
497                 goto fail;
498         }
500         disp_kms->plane_resources = drmModeGetPlaneResources(disp->fd);
501         if (!disp_kms->plane_resources) {
502                 ERROR("drmModeGetPlaneResources failed: %s", strerror(errno));
503                 goto fail;
504         }
506         disp->multiplanar = true;
508         /* note: set args to NULL after we've parsed them so other modules know
509          * that it is already parsed (since the arg parsing is decentralized)
510          */
511         for (i = 1; i < argc; i++) {
512                 if (!argv[i]) {
513                         continue;
514                 }
515                 if (!strcmp("-1", argv[i])) {
516                         disp->multiplanar = false;
517                 } else if (!strcmp("-t", argv[i])) {
518                         int n;
519                         argv[i++] = NULL;
520                         if (!strcmp(argv[i], "auto")) {
521                                 n = 0;
522                         } else if (sscanf(argv[i], "%d", &n) != 1) {
523                                 ERROR("invalid arg: %s", argv[i]);
524                                 goto fail;
525                         }
527                         disp_kms->bo_flags &= ~OMAP_BO_TILED;
529                         if (n == 8) {
530                                 disp_kms->bo_flags |= OMAP_BO_TILED_8;
531                         } else if (n == 16) {
532                                 disp_kms->bo_flags |= OMAP_BO_TILED_16;
533                         } else if (n == 32) {
534                                 disp_kms->bo_flags |= OMAP_BO_TILED_32;
535                         } else if (n == 0) {
536                                 disp_kms->bo_flags |= OMAP_BO_TILED;
537                         } else {
538                                 ERROR("invalid arg: %s", argv[i]);
539                                 goto fail;
540                         }
541                 } else if (!strcmp("-s", argv[i])) {
542                         struct connector *connector =
543                                         &disp_kms->connector[disp_kms->connectors_count++];
544                         connector->crtc = -1;
545                         argv[i++] = NULL;
546                         if (sscanf(argv[i], "%d:%64s",
547                                    &connector->id,
548                                    connector->mode_str) != 2 &&
549                             sscanf(argv[i], "%d@%d:%64s",
550                                    &connector->id,
551                                    &connector->crtc,
552                                    connector->mode_str) != 3) {
553                                 // TODO: we could support connector specified as a name too, I suppose
554                                 ERROR("invalid arg: %s", argv[i]);
555                                 goto fail;
556                         }
557                         disp_kms->bo_flags |= OMAP_BO_SCANOUT;
558                 } else {
559                         /* ignore */
560                         continue;
561                 }
562                 argv[i] = NULL;
563         }
565         disp->width = 0;
566         disp->height = 0;
567         for (i = 0; i < (int)disp_kms->connectors_count; i++) {
568                 struct connector *c = &disp_kms->connector[i];
569                 connector_find_mode(disp, c);
570                 if (c->mode == NULL)
571                         continue;
572                 /* setup side-by-side virtual display */
573                 disp->width += c->mode->hdisplay;
574                 if (disp->height < c->mode->vdisplay) {
575                         disp->height = c->mode->vdisplay;
576                 }
577         }
579         MSG("using %d connectors, %dx%d display, multiplanar: %d",
580                         disp_kms->connectors_count, disp->width, disp->height, disp->multiplanar);
582         return disp;
584 fail:
585         // XXX cleanup
586         return NULL;