2 * (C) GraÅžvydas "notaz" Ignotas, 2010-2011
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 struct omapfb_saved_layer {
26 struct omapfb_plane_info pi;
27 struct omapfb_mem_info mi;
30 static const char *get_fb_device(void)
32 const char *fbname = getenv("SDL_FBDEV");
39 static int osdl_setup_omapfb(int fd, int enabled, int x, int y, int w, int h, int mem)
41 struct omapfb_plane_info pi;
42 struct omapfb_mem_info mi;
45 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
47 err_perror("QUERY_PLANE");
51 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
53 err_perror("QUERY_MEM");
57 /* must disable when changing stuff */
60 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
62 err_perror("SETUP_PLANE");
67 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
69 err_perror("SETUP_MEM");
80 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
82 err_perror("SETUP_PLANE");
83 err("(%d %d %d %d)\n", x, y, w, h);
90 static int read_sysfs(const char *fname, char *buff, size_t size)
95 f = fopen(fname, "r");
97 err_perror("open %s: ", fname);
101 ret = fread(buff, 1, size - 1, f);
104 err_perror("read %s: ", fname);
109 for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
115 int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata)
117 int fb_id, overlay_id = -1, screen_id = -1;
118 struct fb_var_screeninfo fbvar;
119 char buff[64], screen_name[64];
126 fbname = get_fb_device();
128 /* Figure out screen resolution, we need to know default resolution
129 * to report to SDL and for centering stuff.
130 * The only way to achieve this seems to be walking some sysfs files.. */
131 ret = stat(fbname, &status);
133 err_perror("can't stat %s", fbname);
136 fb_id = minor(status.st_rdev);
138 snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
139 f = fopen(buff, "r");
141 err("can't open %s, skip screen detection", buff);
145 ret = fscanf(f, "%d", &overlay_id);
148 err("can't parse %s, skip screen detection", buff);
152 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
153 ret = read_sysfs(buff, screen_name, sizeof(screen_name));
155 err("skip screen detection");
160 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
161 ret = read_sysfs(buff, buff, sizeof(buff));
165 if (strcmp(screen_name, buff) == 0) {
172 err("could not find screen");
176 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id);
177 f = fopen(buff, "r");
179 err("can't open %s, skip screen detection", buff);
183 ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h);
186 err("can't parse %s (%d), skip screen detection", buff, ret);
190 log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d",
191 w, h, screen_name, screen_id, fb_id, overlay_id);
198 /* attempt to extract this from FB then */
199 fd = open(fbname, O_RDWR);
201 err_perror("open %s", fbname);
205 ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar);
208 err_perror("ioctl %s", fbname);
212 if (fbvar.xres == 0 || fbvar.yres == 0) {
213 err("VSCREENINFO has nothing meaningful");
217 pdata->screen_w = fbvar.xres;
218 pdata->screen_h = fbvar.yres;
222 static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata,
223 const char *fbname, int width, int height, int bpp)
225 int x = 0, y = 0, w = width, h = height; /* layer size and pos */
226 int screen_w = w, screen_h = h;
231 if (pdata->screen_w != 0)
232 screen_w = pdata->screen_w;
233 if (pdata->screen_h != 0)
234 screen_h = pdata->screen_h;
236 fd = open(fbname, O_RDWR);
238 err_perror("open %s", fbname);
242 /* FIXME: assuming layer doesn't change here */
243 if (pdata->saved_layer == NULL) {
244 struct omapfb_saved_layer *slayer;
245 slayer = calloc(1, sizeof(*slayer));
249 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi);
251 err_perror("QUERY_PLANE");
255 ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi);
257 err_perror("QUERY_MEM");
261 pdata->saved_layer = slayer;
264 tmp = getenv("SDL_OMAP_LAYER_SIZE");
266 if (strcasecmp(tmp, "fullscreen") == 0)
267 w = screen_w, h = screen_h;
268 else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2)
269 w = tmp_w, h = tmp_h;
271 err("layer size specified incorrectly, "
272 "should be like 800x480");
275 /* the layer can't be set larger than screen */
276 tmp_w = w, tmp_h = h;
281 if (w != tmp_w || h != tmp_h)
282 log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h);
285 x = screen_w / 2 - w / 2;
286 y = screen_h / 2 - h / 2;
287 ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 2);
293 int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata,
294 int width, int height, int bpp, int doublebuf)
299 fbname = get_fb_device();
301 if (pdata->fbdev != NULL) {
302 vout_fbdev_finish(pdata->fbdev);
306 ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp);
310 pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, doublebuf ? 2 : 1);
311 if (pdata->fbdev == NULL)
314 if (!pdata->xenv_up) {
323 void *osdl_video_flip(struct SDL_PrivateVideoData *pdata)
325 if (pdata->fbdev == NULL)
328 if (gcfg_force_vsync)
329 vout_fbdev_wait_vsync(pdata->fbdev);
331 return vout_fbdev_flip(pdata->fbdev);
334 void osdl_video_finish(struct SDL_PrivateVideoData *pdata)
336 static const char *fbname;
338 fbname = get_fb_device();
339 if (pdata->fbdev != NULL) {
340 vout_fbdev_finish(pdata->fbdev);
344 /* restore the OMAP layer */
345 if (pdata->saved_layer != NULL) {
346 struct omapfb_saved_layer *slayer = pdata->saved_layer;
349 fd = open(fbname, O_RDWR);
351 int enabled = slayer->pi.enabled;
353 /* be sure to disable while setting up */
354 slayer->pi.enabled = 0;
355 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
356 ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi);
358 slayer->pi.enabled = enabled;
359 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
364 pdata->saved_layer = NULL;
367 if (pdata->xenv_up) {