2 * (C) GraÅžvydas "notaz" Ignotas, 2010
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/oshide.h"
25 struct omapfb_saved_layer {
26 struct omapfb_plane_info pi;
27 struct omapfb_mem_info mi;
30 static int osdl_setup_omapfb(int fd, int enabled, int x, int y, int w, int h, int mem)
32 struct omapfb_plane_info pi;
33 struct omapfb_mem_info mi;
36 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi);
38 err_perror("QUERY_PLANE");
42 ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi);
44 err_perror("QUERY_MEM");
48 /* must disable when changing stuff */
51 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
53 err_perror("SETUP_PLANE");
57 ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi);
59 err_perror("SETUP_MEM");
69 ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi);
71 err_perror("SETUP_PLANE");
78 static int read_sysfs(const char *fname, char *buff, size_t size)
83 f = fopen(fname, "r");
85 err_perror("open %s: ", fname);
89 ret = fread(buff, 1, size - 1, f);
92 err_perror("read %s: ", fname);
97 for (ret--; ret >= 0 && isspace(buff[ret]); ret--)
103 static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata,
104 const char *fbname, int width, int height, int bpp)
106 int x = 0, y = 0, w = width, h = height; /* layer size and pos */
107 int screen_w = w, screen_h = h;
108 int fb_id, overlay_id = -1, screen_id = -1;
109 char buff[64], screen_name[64];
115 fd = open(fbname, O_RDWR);
117 err_perror("open %s", fbname);
121 /* FIXME: assuming layer doesn't change here */
122 if (pdata->saved_layer == NULL) {
123 struct omapfb_saved_layer *slayer;
124 slayer = calloc(1, sizeof(*slayer));
128 ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi);
130 err_perror("QUERY_PLANE");
134 ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi);
136 err_perror("QUERY_MEM");
140 pdata->saved_layer = slayer;
143 /* Figure out screen resolution, we will want to center if scaling is not enabled.
144 * The only way to achieve this seems to be walking some sysfs files.. */
145 ret = stat(fbname, &status);
147 err_perror("can't stat %s", fbname);
150 fb_id = minor(status.st_rdev);
152 snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id);
153 f = fopen(buff, "r");
155 err("can't open %s, skip screen detection", buff);
159 ret = fscanf(f, "%d", &overlay_id);
162 err("can't parse %s, skip screen detection", buff);
166 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id);
167 ret = read_sysfs(buff, screen_name, sizeof(screen_name));
169 err("skip screen detection");
174 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i);
175 ret = read_sysfs(buff, buff, sizeof(buff));
179 if (strcmp(screen_name, buff) == 0) {
186 err("could not find screen");
190 snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id);
191 f = fopen(buff, "r");
193 err("can't open %s, skip screen detection", buff);
197 ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &screen_w, &screen_h);
200 err("can't parse %s (%d), skip screen detection", buff, ret);
204 log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d",
205 screen_w, screen_h, screen_name, screen_id, fb_id, overlay_id);
208 tmp = getenv("SDL_OMAP_LAYER_SIZE");
211 if (strcasecmp(tmp, "fullscreen") == 0)
212 w = screen_w, h = screen_h;
213 else if (sscanf(tmp, "%dx%d", &w_, &h_) == 2)
216 err("layer size specified incorrectly, "
217 "should be like 800x480");
220 x = screen_w / 2 - w / 2;
221 y = screen_h / 2 - h / 2;
222 ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 3);
228 int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, int width, int height, int bpp)
235 fbname = getenv("SDL_FBDEV");
239 if (pdata->fbdev != NULL) {
240 vout_fbdev_finish(pdata->fbdev);
244 omapsdl_config_from_env();
246 ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp);
250 pdata->fbdev = vout_fbdev_init(fbname, &width, &height, 0);
251 if (pdata->fbdev == NULL)
254 if (!pdata->oshide_done) {
256 pdata->oshide_done = 1;
262 void *osdl_video_flip(struct SDL_PrivateVideoData *pdata)
264 if (pdata->fbdev == NULL)
267 if (gcfg_force_vsync)
268 vout_fbdev_wait_vsync(pdata->fbdev);
270 return vout_fbdev_flip(pdata->fbdev);
273 void osdl_video_finish(struct SDL_PrivateVideoData *pdata)
275 static const char *fbname;
277 fbname = getenv("SDL_FBDEV");
281 if (pdata->fbdev != NULL) {
282 vout_fbdev_finish(pdata->fbdev);
286 /* restore the OMAP layer */
287 if (pdata->saved_layer != NULL) {
288 struct omapfb_saved_layer *slayer = pdata->saved_layer;
291 fd = open(fbname, O_RDWR);
293 int enabled = slayer->pi.enabled;
295 /* be sure to disable while setting up */
296 slayer->pi.enabled = 0;
297 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
298 ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi);
300 slayer->pi.enabled = enabled;
301 ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi);
306 pdata->saved_layer = NULL;
309 if (pdata->oshide_done) {
311 pdata->oshide_done = 0;