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"
26 struct omapfb_plane_info pi;
27 struct omapfb_mem_info mi;
28 struct omapfb_plane_info pi_old;
29 struct omapfb_mem_info mi_old;
32 static const char *get_fb_device(void)
34 const char *fbname = getenv("SDL_FBDEV");
41 static int osdl_setup_omapfb(struct omapfb_state *ostate, int fd, int enabled,
42 int x, int y, int w, int h, int mem, int *buffer_count)
44 struct omapfb_plane_info pi;
45 struct omapfb_mem_info mi;
46 int mem_blocks = *buffer_count;
49 memset(&pi, 0, sizeof(pi));
50 memset(&mi, 0, sizeof(mi));
52 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
54 err_perror("QUERY_PLANE");
58 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
60 err_perror("QUERY_MEM");
64 /* must disable when changing stuff */
67 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
69 err_perror("SETUP_PLANE");
72 if (mi.size < mem * mem_blocks) {
73 for (; mem_blocks > 0; mem_blocks--) {
74 mi.size = mem * mem_blocks;
75 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
79 if (ret != 0 || mem_blocks <= 0) {
80 err("failed to allocate at least %d bytes of vram:\n", mem);
81 err_perror("SETUP_MEM");
85 *buffer_count = mem_blocks;
93 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
95 err_perror("SETUP_PLANE");
96 err("(%d %d %d %d)\n", x, y, w, h);
105 static int read_sysfs(const char *fname, char *buff, size_t size)
110 f = fopen(fname, "r");
112 err_perror("open %s: ", fname);
116 ret = fread(buff, 1, size - 1, f);
119 err_perror("read %s: ", fname);
124 for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
130 int read_vscreeninfo(const char *fbname, int *w, int *h)
132 struct fb_var_screeninfo fbvar;
135 fd = open(fbname, O_RDWR);
137 err_perror("open %s", fbname);
141 ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar);
145 err_perror("ioctl %s", fbname);
149 if (fbvar.xres == 0 || fbvar.yres == 0)
157 int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata)
159 int fb_id, overlay_id = -1, screen_id = -1;
160 char buff[64], screen_name[64];
167 pdata->phys_w = pdata->phys_h = 0;
169 fbname = get_fb_device();
171 /* Figure out screen resolution, we need to know default resolution
172 * to report to SDL and for centering stuff.
173 * The only way to achieve this seems to be walking some sysfs files.. */
174 ret = stat(fbname, &status);
176 err_perror("can't stat %s", fbname);
179 fb_id = minor(status.st_rdev);
181 snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
182 f = fopen(buff, "r");
184 err("can't open %s, skip screen detection", buff);
188 ret = fscanf(f, "%d", &overlay_id);
191 err("can't parse %s, skip screen detection", buff);
195 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
196 ret = read_sysfs(buff, screen_name, sizeof(screen_name));
198 err("skip screen detection");
203 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
204 ret = read_sysfs(buff, buff, sizeof(buff));
208 if (strcmp(screen_name, buff) == 0) {
215 err("could not find screen");
219 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id);
220 f = fopen(buff, "r");
222 err("can't open %s, skip screen detection", buff);
226 ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h);
229 err("can't parse %s (%d), skip screen detection", buff, ret);
233 log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d",
234 w, h, screen_name, screen_id, fb_id, overlay_id);
241 /* attempt to extract this from FB then */
242 ret = read_vscreeninfo(fbname, &pdata->phys_w, &pdata->phys_h);
243 if (ret != 0 && strcmp(fbname, "/dev/fb0") != 0) {
245 ret = read_vscreeninfo("/dev/fb0", &pdata->phys_w, &pdata->phys_h);
249 err("VSCREENINFO has nothing meaningful");
256 static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata,
257 const char *fbname, int width, int height, int bpp, int *buffer_count)
259 int x = 0, y = 0, w = width, h = height; /* layer size and pos */
260 int screen_w = w, screen_h = h;
266 pdata->layer_x = pdata->layer_y = pdata->layer_w = pdata->layer_h = 0;
268 if (pdata->phys_w != 0)
269 screen_w = pdata->phys_w;
270 if (pdata->phys_h != 0)
271 screen_h = pdata->phys_h;
273 fd = open(fbname, O_RDWR);
275 err_perror("open %s", fbname);
279 /* FIXME: assuming layer doesn't change here */
280 if (pdata->saved_layer == NULL) {
281 struct omapfb_state *slayer;
282 slayer = calloc(1, sizeof(*slayer));
286 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi_old);
288 err_perror("QUERY_PLANE");
292 ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi_old);
294 err_perror("QUERY_MEM");
298 pdata->saved_layer = slayer;
301 tmp = getenv("SDL_OMAP_LAYER_SIZE");
303 if (strcasecmp(tmp, "fullscreen") == 0)
304 w = screen_w, h = screen_h;
305 else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2)
306 w = tmp_w, h = tmp_h;
308 err("layer size specified incorrectly, "
309 "should be like 800x480");
312 /* the layer can't be set larger than screen */
313 tmp_w = w, tmp_h = h;
318 if (w != tmp_w || h != tmp_h)
319 log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h);
321 x = screen_w / 2 - w / 2;
322 y = screen_h / 2 - h / 2;
323 ret = osdl_setup_omapfb(pdata->saved_layer, fd, 1, x, y, w, h,
324 width * height * ((bpp + 7) / 8), buffer_count);
338 void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata,
339 int border_l, int border_r, int border_t, int border_b,
340 int width, int height, int bpp, int *doublebuf,
341 const char *wm_title)
343 int buffers_try, buffers_set;
348 fbname = get_fb_device();
350 if (pdata->fbdev != NULL) {
351 vout_fbdev_finish(pdata->fbdev);
355 buffers_try = buffers_set = 1;
357 /* actually try tripple buffering for reduced chance of tearing */
358 buffers_try = buffers_set = 3;
360 ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp, &buffers_set);
364 pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, buffers_set);
365 if (pdata->fbdev == NULL)
368 if (border_l | border_r | border_t | border_b) {
369 width -= border_l + border_r;
370 height -= border_t + border_b;
371 result = vout_fbdev_resize(pdata->fbdev, width, height, bpp,
372 border_l, border_r, border_t, border_b, buffers_set);
375 result = osdl_video_flip(pdata);
380 if (!pdata->xenv_up) {
381 int xenv_flags = XENV_CAP_KEYS | XENV_CAP_MOUSE;
382 ret = xenv_init(&xenv_flags, wm_title);
385 pdata->xenv_mouse = (xenv_flags & XENV_CAP_MOUSE) ? 1 : 0;
389 if (buffers_try != buffers_set) {
390 log("only %d/%d buffers available, expect tearing\n",
391 buffers_set, buffers_try);
392 *doublebuf = buffers_set > 1;
398 osdl_video_finish(pdata);
402 void *osdl_video_flip(struct SDL_PrivateVideoData *pdata)
406 if (pdata->fbdev == NULL)
409 ret = vout_fbdev_flip(pdata->fbdev);
411 if (pdata->cfg_force_vsync)
412 vout_fbdev_wait_vsync(pdata->fbdev);
417 int osdl_video_pause(struct SDL_PrivateVideoData *pdata, int is_pause)
419 struct omapfb_state *state = pdata->saved_layer;
420 struct omapfb_plane_info pi;
421 struct omapfb_mem_info mi;
426 if (pdata->fbdev != NULL)
427 fd = vout_fbdev_get_fd(pdata->fbdev);
429 err("bad fd %d", fd);
433 err("missing layer state\n");
438 ret = vout_fbdev_save(pdata->fbdev);
443 enabled = pi.enabled;
450 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
452 err_perror("SETUP_PLANE");
456 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
458 err_perror("SETUP_MEM");
461 ret = vout_fbdev_restore(pdata->fbdev);
463 err("fbdev_restore failed\n");
470 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
472 err_perror("SETUP_PLANE");
480 void osdl_video_finish(struct SDL_PrivateVideoData *pdata)
482 static const char *fbname;
484 fbname = get_fb_device();
485 if (pdata->fbdev != NULL) {
486 vout_fbdev_finish(pdata->fbdev);
490 /* restore the OMAP layer */
491 if (pdata->saved_layer != NULL) {
492 struct omapfb_state *slayer = pdata->saved_layer;
495 fd = open(fbname, O_RDWR);
497 int enabled = slayer->pi_old.enabled;
499 /* be sure to disable while setting up */
500 slayer->pi_old.enabled = 0;
501 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi_old);
502 ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi_old);
504 slayer->pi_old.enabled = enabled;
505 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi_old);
510 pdata->saved_layer = NULL;
513 if (pdata->xenv_up) {