f641fccb |
1 | /* |
2 | * (C) GraÅžvydas "notaz" Ignotas, 2010 |
3 | * |
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. |
6 | */ |
7 | |
8 | #include <stdio.h> |
9 | #include <stdlib.h> |
10 | #include <string.h> |
11 | #include <strings.h> |
12 | #include <ctype.h> |
13 | #include <sys/types.h> |
14 | #include <sys/stat.h> |
15 | #include <fcntl.h> |
16 | #include <sys/ioctl.h> |
17 | #include <unistd.h> |
18 | #include <linux/fb.h> |
19 | |
20 | #include "omapsdl.h" |
21 | #include "omapfb.h" |
22 | #include "linux/fbdev.h" |
23 | #include "linux/oshide.h" |
24 | |
25 | struct omapfb_saved_layer { |
26 | struct omapfb_plane_info pi; |
27 | struct omapfb_mem_info mi; |
28 | }; |
29 | |
30 | static int osdl_setup_omapfb(int fd, int enabled, int x, int y, int w, int h, int mem) |
31 | { |
32 | struct omapfb_plane_info pi; |
33 | struct omapfb_mem_info mi; |
34 | int ret; |
35 | |
36 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &pi); |
37 | if (ret != 0) { |
38 | perror("QUERY_PLANE"); |
39 | return -1; |
40 | } |
41 | |
42 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi); |
43 | if (ret != 0) { |
44 | perror("QUERY_MEM"); |
45 | return -1; |
46 | } |
47 | |
48 | /* must disable when changing stuff */ |
49 | if (pi.enabled) { |
50 | pi.enabled = 0; |
51 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
52 | if (ret != 0) |
53 | perror("SETUP_PLANE"); |
54 | } |
55 | |
56 | mi.size = mem; |
57 | ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi); |
58 | if (ret != 0) { |
59 | perror("SETUP_MEM"); |
60 | return -1; |
61 | } |
62 | |
63 | pi.pos_x = x; |
64 | pi.pos_y = y; |
65 | pi.out_width = w; |
66 | pi.out_height = h; |
67 | pi.enabled = enabled; |
68 | |
69 | ret = ioctl(fd, OMAPFB_SETUP_PLANE, &pi); |
70 | if (ret != 0) { |
71 | perror("SETUP_PLANE"); |
72 | return -1; |
73 | } |
74 | |
75 | return 0; |
76 | } |
77 | |
78 | static int read_sysfs(const char *fname, char *buff, size_t size) |
79 | { |
80 | FILE *f; |
81 | int ret; |
82 | |
83 | f = fopen(fname, "r"); |
84 | if (f == NULL) { |
85 | fprintf(stderr, "open %s: ", fname); |
86 | perror(NULL); |
87 | return -1; |
88 | } |
89 | |
90 | ret = fread(buff, 1, size - 1, f); |
91 | fclose(f); |
92 | if (ret <= 0) { |
93 | fprintf(stderr, "read %s: ", fname); |
94 | perror(NULL); |
95 | return -1; |
96 | } |
97 | |
98 | buff[ret] = 0; |
99 | for (ret--; ret >= 0 && isspace(buff[ret]); ret--) |
100 | buff[ret] = 0; |
101 | |
102 | return 0; |
103 | } |
104 | |
105 | static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, |
106 | const char *fbname, int width, int height, int bpp) |
107 | { |
108 | int x = 0, y = 0, w = width, h = height; /* layer size and pos */ |
109 | int screen_w = w, screen_h = h; |
110 | int fb_id, overlay_id = -1, screen_id = -1; |
111 | char buff[64], screen_name[64]; |
112 | struct stat status; |
113 | const char *tmp; |
114 | int i, ret, fd; |
115 | FILE *f; |
116 | |
117 | fd = open(fbname, O_RDWR); |
118 | if (fd == -1) { |
119 | fprintf(stderr, "open %s: ", fbname); |
120 | perror(NULL); |
121 | return -1; |
122 | } |
123 | |
124 | /* FIXME: assuming layer doesn't change here */ |
125 | if (pdata->saved_layer == NULL) { |
126 | struct omapfb_saved_layer *slayer; |
127 | slayer = calloc(1, sizeof(*slayer)); |
128 | if (slayer == NULL) |
129 | return -1; |
130 | |
131 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi); |
132 | if (ret != 0) { |
133 | perror("QUERY_PLANE"); |
134 | return -1; |
135 | } |
136 | |
137 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi); |
138 | if (ret != 0) { |
139 | perror("QUERY_MEM"); |
140 | return -1; |
141 | } |
142 | |
143 | pdata->saved_layer = slayer; |
144 | } |
145 | |
146 | /* Figure out screen resolution, we will want to center if scaling is not enabled. |
147 | * The only way to achieve this seems to be walking some sysfs files.. */ |
148 | ret = stat(fbname, &status); |
149 | if (ret != 0) { |
150 | fprintf(stderr, "can't stat %s: ", fbname); |
151 | perror(NULL); |
152 | return -1; |
153 | } |
154 | fb_id = minor(status.st_rdev); |
155 | |
156 | snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id); |
157 | f = fopen(buff, "r"); |
158 | if (f == NULL) { |
159 | fprintf(stderr, "can't open %s, skip screen detection\n", buff); |
160 | goto skip_screen; |
161 | } |
162 | |
163 | ret = fscanf(f, "%d", &overlay_id); |
164 | fclose(f); |
165 | if (ret != 1) { |
166 | fprintf(stderr, "can't parse %s, skip screen detection\n", buff); |
167 | goto skip_screen; |
168 | } |
169 | |
170 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id); |
171 | ret = read_sysfs(buff, screen_name, sizeof(screen_name)); |
172 | if (ret < 0) { |
173 | fprintf(stderr, "skip screen detection\n"); |
174 | goto skip_screen; |
175 | } |
176 | |
177 | for (i = 0; ; i++) { |
178 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i); |
179 | ret = read_sysfs(buff, buff, sizeof(buff)); |
180 | if (ret < 0) |
181 | break; |
182 | |
183 | if (strcmp(screen_name, buff) == 0) { |
184 | screen_id = i; |
185 | break; |
186 | } |
187 | } |
188 | |
189 | if (screen_id < 0) { |
190 | fprintf(stderr, "could not find screen\n"); |
191 | goto skip_screen; |
192 | } |
193 | |
194 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id); |
195 | f = fopen(buff, "r"); |
196 | if (f == NULL) { |
197 | fprintf(stderr, "can't open %s, skip screen detection\n", buff); |
198 | goto skip_screen; |
199 | } |
200 | |
201 | ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &screen_w, &screen_h); |
202 | fclose(f); |
203 | if (ret != 2) { |
204 | fprintf(stderr, "can't parse %s (%d), skip screen detection\n", buff, ret); |
205 | goto skip_screen; |
206 | } |
207 | |
208 | printf("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d\n", |
209 | screen_w, screen_h, screen_name, screen_id, fb_id, overlay_id); |
210 | |
211 | skip_screen: |
212 | tmp = getenv("SDL_OMAP_LAYER_SIZE"); |
213 | if (tmp != NULL) { |
214 | int w_, h_; |
215 | if (strcasecmp(tmp, "fullscreen") == 0) |
216 | w = screen_w, h = screen_h; |
217 | else if (sscanf(tmp, "%dx%d", &w_, &h_) == 2) |
218 | w = w_, h = h_; |
219 | else |
220 | fprintf(stderr, "layer size specified incorrectly, " |
221 | "should be like 800x480"); |
222 | } |
223 | |
224 | x = screen_w / 2 - w / 2; |
225 | y = screen_h / 2 - h / 2; |
226 | ret = osdl_setup_omapfb(fd, 1, x, y, w, h, width * height * ((bpp + 7) / 8) * 3); |
227 | close(fd); |
228 | |
229 | return ret; |
230 | } |
231 | |
232 | int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, int width, int height, int bpp) |
233 | { |
234 | const char *fbname; |
235 | int ret; |
236 | |
237 | bpp = 16; // FIXME |
238 | |
239 | fbname = getenv("SDL_FBDEV"); |
240 | if (fbname == NULL) |
241 | fbname = "/dev/fb1"; |
242 | |
243 | if (pdata->fbdev != NULL) { |
244 | vout_fbdev_finish(pdata->fbdev); |
245 | pdata->fbdev = NULL; |
246 | } |
247 | |
248 | omapsdl_config_from_env(); |
249 | |
250 | ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp); |
251 | if (ret < 0) |
252 | return -1; |
253 | |
254 | pdata->fbdev = vout_fbdev_init(fbname, &width, &height, 0); |
255 | if (pdata->fbdev == NULL) |
256 | return -1; |
257 | |
258 | if (!pdata->oshide_done) { |
259 | oshide_init(); |
260 | pdata->oshide_done = 1; |
261 | } |
262 | |
263 | return 0; |
264 | } |
265 | |
266 | void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) |
267 | { |
268 | if (pdata->fbdev == NULL) |
269 | return NULL; |
270 | |
271 | if (gcfg_force_vsync) |
272 | vout_fbdev_wait_vsync(pdata->fbdev); |
273 | |
274 | return vout_fbdev_flip(pdata->fbdev); |
275 | } |
276 | |
277 | void osdl_video_finish(struct SDL_PrivateVideoData *pdata) |
278 | { |
279 | static const char *fbname; |
280 | |
281 | fbname = getenv("SDL_FBDEV"); |
282 | if (fbname == NULL) |
283 | fbname = "/dev/fb1"; |
284 | |
285 | if (pdata->fbdev != NULL) { |
286 | vout_fbdev_finish(pdata->fbdev); |
287 | pdata->fbdev = NULL; |
288 | } |
289 | |
290 | /* restore the OMAP layer */ |
291 | if (pdata->saved_layer != NULL) { |
292 | struct omapfb_saved_layer *slayer = pdata->saved_layer; |
293 | int fd; |
294 | |
295 | fd = open(fbname, O_RDWR); |
296 | if (fd != -1) { |
297 | int enabled = slayer->pi.enabled; |
298 | |
299 | /* be sure to disable while setting up */ |
300 | slayer->pi.enabled = 0; |
301 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
302 | ioctl(fd, OMAPFB_SETUP_MEM, &slayer->mi); |
303 | if (enabled) { |
304 | slayer->pi.enabled = enabled; |
305 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
306 | } |
307 | close(fd); |
308 | } |
309 | free(slayer); |
310 | pdata->saved_layer = NULL; |
311 | } |
312 | |
313 | if (pdata->oshide_done) { |
314 | oshide_finish(); |
315 | pdata->oshide_done = 0; |
316 | } |
317 | } |
318 | |