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 memset(&pi, 0, sizeof(pi));
46 memset(&mi, 0, sizeof(mi));
48 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
50 err_perror("QUERY_PLANE");
54 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
56 err_perror("QUERY_MEM");
60 /* must disable when changing stuff */
63 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
65 err_perror("SETUP_PLANE");
70 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
72 err_perror("SETUP_MEM");
83 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
85 err_perror("SETUP_PLANE");
86 err("(%d %d %d %d)\n", x, y, w, h);
93 static int read_sysfs(const char *fname, char *buff, size_t size)
98 f = fopen(fname, "r");
100 err_perror("open %s: ", fname);
104 ret = fread(buff, 1, size - 1, f);
107 err_perror("read %s: ", fname);
112 for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
118 int read_vscreeninfo(const char *fbname, int *w, int *h)
120 struct fb_var_screeninfo fbvar;
123 fd = open(fbname, O_RDWR);
125 err_perror("open %s", fbname);
129 ret = ioctl(fd, FBIOGET_VSCREENINFO, &fbvar);
133 err_perror("ioctl %s", fbname);
137 if (fbvar.xres == 0 || fbvar.yres == 0)
145 int osdl_video_detect_screen(struct SDL_PrivateVideoData *pdata)
147 int fb_id, overlay_id = -1, screen_id = -1;
148 char buff[64], screen_name[64];
155 pdata->phys_w = pdata->phys_h = 0;
157 fbname = get_fb_device();
159 /* Figure out screen resolution, we need to know default resolution
160 * to report to SDL and for centering stuff.
161 * The only way to achieve this seems to be walking some sysfs files.. */
162 ret = stat(fbname, &status);
164 err_perror("can't stat %s", fbname);
167 fb_id = minor(status.st_rdev);
169 snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
170 f = fopen(buff, "r");
172 err("can't open %s, skip screen detection", buff);
176 ret = fscanf(f, "%d", &overlay_id);
179 err("can't parse %s, skip screen detection", buff);
183 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
184 ret = read_sysfs(buff, screen_name, sizeof(screen_name));
186 err("skip screen detection");
191 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
192 ret = read_sysfs(buff, buff, sizeof(buff));
196 if (strcmp(screen_name, buff) == 0) {
203 err("could not find screen");
207 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id);
208 f = fopen(buff, "r");
210 err("can't open %s, skip screen detection", buff);
214 ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &w, &h);
217 err("can't parse %s (%d), skip screen detection", buff, ret);
221 log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d",
222 w, h, screen_name, screen_id, fb_id, overlay_id);
229 /* attempt to extract this from FB then */
230 ret = read_vscreeninfo(fbname, &pdata->phys_w, &pdata->phys_h);
231 if (ret != 0 && strcmp(fbname, "/dev/fb0") != 0) {
233 ret = read_vscreeninfo("/dev/fb0", &pdata->phys_w, &pdata->phys_h);
237 err("VSCREENINFO has nothing meaningful");
244 static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata,
245 const char *fbname, int width, int height, int bpp)
247 int x = 0, y = 0, w = width, h = height; /* layer size and pos */
248 int screen_w = w, screen_h = h;
254 pdata->layer_x = pdata->layer_y = pdata->layer_w = pdata->layer_h = 0;
256 if (pdata->phys_w != 0)
257 screen_w = pdata->phys_w;
258 if (pdata->phys_h != 0)
259 screen_h = pdata->phys_h;
261 fd = open(fbname, O_RDWR);
263 err_perror("open %s", fbname);
267 /* FIXME: assuming layer doesn't change here */
268 if (pdata->saved_layer == NULL) {
269 struct omapfb_saved_layer *slayer;
270 slayer = calloc(1, sizeof(*slayer));
274 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi);
276 err_perror("QUERY_PLANE");
280 ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi);
282 err_perror("QUERY_MEM");
286 pdata->saved_layer = slayer;
289 tmp = getenv("SDL_OMAP_LAYER_SIZE");
291 if (strcasecmp(tmp, "fullscreen") == 0)
292 w = screen_w, h = screen_h;
293 else if (sscanf(tmp, "%dx%d", &tmp_w, &tmp_h) == 2)
294 w = tmp_w, h = tmp_h;
296 err("layer size specified incorrectly, "
297 "should be like 800x480");
300 /* the layer can't be set larger than screen */
301 tmp_w = w, tmp_h = h;
306 if (w != tmp_w || h != tmp_h)
307 log("layer resized %dx%d -> %dx%d to fit screen", tmp_w, tmp_h, w, h);
309 x = screen_w / 2 - w / 2;
310 y = screen_h / 2 - h / 2;
311 ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 2);
325 void *osdl_video_set_mode(struct SDL_PrivateVideoData *pdata,
326 int border_l, int border_r, int border_t, int border_b,
327 int width, int height, int bpp, int doublebuf)
333 fbname = get_fb_device();
335 if (pdata->fbdev != NULL) {
336 vout_fbdev_finish(pdata->fbdev);
340 ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp);
344 pdata->fbdev = vout_fbdev_init(fbname, &width, &height, bpp, doublebuf ? 2 : 1);
345 if (pdata->fbdev == NULL)
348 if (border_l | border_r | border_t | border_b) {
349 width -= border_l + border_r;
350 height -= border_t + border_b;
351 result = vout_fbdev_resize(pdata->fbdev, width, height, bpp,
352 border_l, border_r, border_t, border_b, doublebuf ? 2 : 1);
355 result = osdl_video_flip(pdata);
357 if (result == NULL) {
358 osdl_video_finish(pdata);
362 if (!pdata->xenv_up) {
371 void *osdl_video_flip(struct SDL_PrivateVideoData *pdata)
373 if (pdata->fbdev == NULL)
376 if (pdata->cfg_force_vsync)
377 vout_fbdev_wait_vsync(pdata->fbdev);
379 return vout_fbdev_flip(pdata->fbdev);
382 void osdl_video_finish(struct SDL_PrivateVideoData *pdata)
384 static const char *fbname;
386 fbname = get_fb_device();
387 if (pdata->fbdev != NULL) {
388 vout_fbdev_finish(pdata->fbdev);
392 /* restore the OMAP layer */
393 if (pdata->saved_layer != NULL) {
394 struct omapfb_saved_layer *slayer = pdata->saved_layer;
397 fd = open(fbname, O_RDWR);
399 int enabled = slayer->pi.enabled;
401 /* be sure to disable while setting up */
402 slayer->pi.enabled = 0;
403 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
404 ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi);
406 slayer->pi.enabled = enabled;
407 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
412 pdata->saved_layer = NULL;
415 if (pdata->xenv_up) {