2 * (C) GraÅžvydas "notaz" Ignotas, 2010-2012
4 * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
5 * See the COPYING file in the top-level directory.
13 #include <sys/types.h>
16 #include <sys/ioctl.h>
22 #include "linux/fbdev.h"
23 #include "linux/xenv.h"
25 #define MIN(a, b) ( ((a) < (b)) ? (a) : (b) )
28 struct omapfb_plane_info pi;
29 struct omapfb_mem_info mi;
30 struct omapfb_plane_info pi_old;
31 struct omapfb_mem_info mi_old;
34 static const char *get_fb_device(void)
36 const char *fbname = getenv("SDL_FBDEV");
43 static int osdl_setup_omapfb(struct omapfb_state *ostate, int fd, int enabled,
44 int x, int y, int w, int h, int mem, int *buffer_count)
46 struct omapfb_plane_info pi;
47 struct omapfb_mem_info mi;
48 int mem_blocks = *buffer_count;
51 memset(&pi, 0, sizeof(pi));
52 memset(&mi, 0, sizeof(mi));
54 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
56 err_perror("QUERY_PLANE");
60 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
62 err_perror("QUERY_MEM");
66 /* must disable when changing stuff */
69 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
71 err_perror("SETUP_PLANE");
74 if (mi.size < mem * mem_blocks) {
75 for (; mem_blocks > 0; mem_blocks--) {
76 mi.size = mem * mem_blocks;
77 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
81 if (ret != 0 || mem_blocks <= 0) {
82 err("failed to allocate at least %d bytes of vram:\n", mem);
83 err_perror("SETUP_MEM");
87 *buffer_count = mem_blocks;
95 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
97 err_perror("SETUP_PLANE");
98 err("(%d %d %d %d)\n", x, y, w, h);
107 static int read_sysfs(const char *fname, char *buff, size_t size)
112 f = fopen(fname, "r");
114 err_perror("open %s: ", fname);
118 ret = fread(buff, 1, size - 1, f);
121 err_perror("read %s: ", fname);
126 for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
132 int read_vscreeninfo(const char *fbname, int *w, int *h)
134 struct fb_var_screeninfo fbvar;
137 fd = open(fbname, O_RDWR);
139 err_perror("open %s", fbname);
143 ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar);
147 err_perror("ioctl %s", fbname);
151 if (fbvar.xres == 0 || fbvar.yres == 0)
159 int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata)
161 int fb_id, overlay_id = -1, screen_id = -1;
162 char buff[64], screen_name[64];
169 pdata->phys_w = pdata->phys_h = 0;
171 fbname = get_fb_device();
173 /* Figure out screen resolution, we need to know default resolution
174 * to report to SDL and for centering stuff.
175 * The only way to achieve this seems to be walking some sysfs files.. */
176 ret = stat(fbname, &status);
178 err_perror("can't stat %s", fbname);
181 fb_id = minor(status.st_rdev);
183 snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
184 f = fopen(buff, "r");
186 err("can't open %s, skip screen detection", buff);
190 ret = fscanf(f, "%d", &overlay_id);
193 err("can't parse %s, skip screen detection", buff);
197 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
198 ret = read_sysfs(buff, screen_name, sizeof(screen_name));
200 err("skip screen detection");
205 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
206 ret = read_sysfs(buff, buff, sizeof(buff));
210 if (strcmp(screen_name, buff) == 0) {
217 err("could not find screen");
221 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id);
222 f = fopen(buff, "r");
224 err("can't open %s, skip screen detection", buff);
228 ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h);
231 err("can't parse %s (%d), skip screen detection", buff, ret);
235 log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d",
236 w, h, screen_name, screen_id, fb_id, overlay_id);
243 /* attempt to extract this from FB then */
244 ret = read_vscreeninfo(fbname, &pdata->phys_w, &pdata->phys_h);
245 if (ret != 0 && strcmp(fbname, "/dev/fb0") != 0) {
247 ret = read_vscreeninfo("/dev/fb0", &pdata->phys_w, &pdata->phys_h);
251 err("VSCREENINFO has nothing meaningful");
258 static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata,
259 const char *fbname, int width, int height, int bpp, int *buffer_count)
261 int x = 0, y = 0, w = width, h = height; /* layer size and pos */
262 int screen_w = w, screen_h = h;
268 pdata->layer_x = pdata->layer_y = pdata->layer_w = pdata->layer_h = 0;
270 if (pdata->phys_w != 0)
271 screen_w = pdata->phys_w;
272 if (pdata->phys_h != 0)
273 screen_h = pdata->phys_h;
275 fd = open(fbname, O_RDWR);
277 err_perror("open %s", fbname);
281 /* FIXME: assuming layer doesn't change here */
282 if (pdata->saved_layer == NULL) {
283 struct omapfb_state *slayer;
284 slayer = calloc(1, sizeof(*slayer));
288 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi_old);
290 err_perror("QUERY_PLANE");
294 ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi_old);
296 err_perror("QUERY_MEM");
300 pdata->saved_layer = slayer;
303 tmp = getenv("SDL_OMAP_LAYER_SIZE");
305 if (strcasecmp(tmp, "fullscreen") == 0) {
306 w = screen_w, h = screen_h;
308 else if (strcasecmp(tmp, "scaled") == 0) {
309 float factor = MIN(((float)screen_w) / width, ((float)screen_h) / height);
310 w = (int)(factor*width), h = (int)(factor*height);
312 else if (strcasecmp(tmp, "pixelperfect") == 0) {
313 float factor = MIN(((float)screen_w) / width, ((float)screen_h) / height);
314 w = ((int)factor) * width, h = ((int)factor) * height;
315 /* factor < 1.f => 0x0 layer, so fall back to 'scaled' */
317 w = (int)(factor * width), h = (int)(factor * height);
320 else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2) {
321 w = tmp_w, h = tmp_h;
324 err("layer size specified incorrectly, "
325 "should be like 800x480");
329 /* the layer can't be set larger than screen */
330 tmp_w = w, tmp_h = h;
335 if (w != tmp_w || h != tmp_h)
336 log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h);
338 x = screen_w / 2 - w / 2;
339 y = screen_h / 2 - h / 2;
340 ret = osdl_setup_omapfb(pdata->saved_layer, fd, 1, x, y, w, h,
341 width * height * ((bpp + 7) / 8), buffer_count);
355 void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata,
356 int border_l, int border_r, int border_t, int border_b,
357 int width, int height, int bpp, int *doublebuf,
358 const char *wm_title)
360 int buffers_try, buffers_set;
365 fbname = get_fb_device();
367 if (pdata->fbdev != NULL) {
368 vout_fbdev_finish(pdata->fbdev);
372 buffers_try = buffers_set = 1;
374 /* actually try tripple buffering for reduced chance of tearing */
375 buffers_try = buffers_set = 3;
377 ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp, &buffers_set);
381 pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, buffers_set);
382 if (pdata->fbdev == NULL)
385 if (border_l | border_r | border_t | border_b) {
386 width -= border_l + border_r;
387 height -= border_t + border_b;
388 result = vout_fbdev_resize(pdata->fbdev, width, height, bpp,
389 border_l, border_r, border_t, border_b, buffers_set);
392 result = osdl_video_flip(pdata);
397 if (!pdata->xenv_up) {
398 int xenv_flags = XENV_CAP_KEYS | XENV_CAP_MOUSE;
399 ret = xenv_init(&xenv_flags, wm_title);
402 pdata->xenv_mouse = (xenv_flags & XENV_CAP_MOUSE) ? 1 : 0;
406 if (buffers_try != buffers_set) {
407 log("only %d/%d buffers available, expect tearing\n",
408 buffers_set, buffers_try);
409 *doublebuf = buffers_set > 1;
415 osdl_video_finish(pdata);
419 void *osdl_video_flip(struct SDL_PrivateVideoData *pdata)
423 if (pdata->fbdev == NULL)
426 ret = vout_fbdev_flip(pdata->fbdev);
428 if (pdata->cfg_force_vsync)
429 vout_fbdev_wait_vsync(pdata->fbdev);
434 int osdl_video_pause(struct SDL_PrivateVideoData *pdata, int is_pause)
436 struct omapfb_state *state = pdata->saved_layer;
437 struct omapfb_plane_info pi;
438 struct omapfb_mem_info mi;
443 if (pdata->fbdev != NULL)
444 fd = vout_fbdev_get_fd(pdata->fbdev);
446 err("bad fd %d", fd);
450 err("missing layer state\n");
455 ret = vout_fbdev_save(pdata->fbdev);
460 enabled = pi.enabled;
467 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
469 err_perror("SETUP_PLANE");
473 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
475 err_perror("SETUP_MEM");
478 ret = vout_fbdev_restore(pdata->fbdev);
480 err("fbdev_restore failed\n");
487 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
489 err_perror("SETUP_PLANE");
497 void osdl_video_finish(struct SDL_PrivateVideoData *pdata)
499 static const char *fbname;
501 fbname = get_fb_device();
502 if (pdata->fbdev != NULL) {
503 vout_fbdev_finish(pdata->fbdev);
507 /* restore the OMAP layer */
508 if (pdata->saved_layer != NULL) {
509 struct omapfb_state *slayer = pdata->saved_layer;
512 fd = open(fbname, O_RDWR);
514 int enabled = slayer->pi_old.enabled;
516 /* be sure to disable while setting up */
517 slayer->pi_old.enabled = 0;
518 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi_old);
519 ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi_old);
521 slayer->pi_old.enabled = enabled;
522 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi_old);
527 pdata->saved_layer = NULL;
530 if (pdata->xenv_up) {