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) { |
7b66578c |
38 | err_perror("QUERY_PLANE"); |
f641fccb |
39 | return -1; |
40 | } |
41 | |
42 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &mi); |
43 | if (ret != 0) { |
7b66578c |
44 | err_perror("QUERY_MEM"); |
f641fccb |
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) |
7b66578c |
53 | err_perror("SETUP_PLANE"); |
f641fccb |
54 | } |
55 | |
56 | mi.size = mem; |
57 | ret = ioctl(fd, OMAPFB_SETUP_MEM, &mi); |
58 | if (ret != 0) { |
7b66578c |
59 | err_perror("SETUP_MEM"); |
f641fccb |
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) { |
7b66578c |
71 | err_perror("SETUP_PLANE"); |
f641fccb |
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) { |
7b66578c |
85 | err_perror("open %s: ", fname); |
f641fccb |
86 | return -1; |
87 | } |
88 | |
89 | ret = fread(buff, 1, size - 1, f); |
90 | fclose(f); |
91 | if (ret <= 0) { |
7b66578c |
92 | err_perror("read %s: ", fname); |
f641fccb |
93 | return -1; |
94 | } |
95 | |
96 | buff[ret] = 0; |
97 | for (ret--; ret >= 0 && isspace(buff[ret]); ret--) |
98 | buff[ret] = 0; |
99 | |
100 | return 0; |
101 | } |
102 | |
103 | static int osdl_setup_omap_layer(struct SDL_PrivateVideoData *pdata, |
104 | const char *fbname, int width, int height, int bpp) |
105 | { |
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]; |
110 | struct stat status; |
111 | const char *tmp; |
112 | int i, ret, fd; |
113 | FILE *f; |
114 | |
115 | fd = open(fbname, O_RDWR); |
116 | if (fd == -1) { |
7b66578c |
117 | err_perror("open %s", fbname); |
f641fccb |
118 | return -1; |
119 | } |
120 | |
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)); |
125 | if (slayer == NULL) |
126 | return -1; |
127 | |
128 | ret = ioctl(fd, OMAPFB_QUERY_PLANE, &slayer->pi); |
129 | if (ret != 0) { |
7b66578c |
130 | err_perror("QUERY_PLANE"); |
f641fccb |
131 | return -1; |
132 | } |
133 | |
134 | ret = ioctl(fd, OMAPFB_QUERY_MEM, &slayer->mi); |
135 | if (ret != 0) { |
7b66578c |
136 | err_perror("QUERY_MEM"); |
f641fccb |
137 | return -1; |
138 | } |
139 | |
140 | pdata->saved_layer = slayer; |
141 | } |
142 | |
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); |
146 | if (ret != 0) { |
7b66578c |
147 | err_perror("can't stat %s", fbname); |
f641fccb |
148 | return -1; |
149 | } |
150 | fb_id = minor(status.st_rdev); |
151 | |
152 | snprintf(buff, sizeof(buff), "/sys/class/graphics/fb%d/overlays", fb_id); |
153 | f = fopen(buff, "r"); |
154 | if (f == NULL) { |
7b66578c |
155 | err("can't open %s, skip screen detection", buff); |
f641fccb |
156 | goto skip_screen; |
157 | } |
158 | |
159 | ret = fscanf(f, "%d", &overlay_id); |
160 | fclose(f); |
161 | if (ret != 1) { |
7b66578c |
162 | err("can't parse %s, skip screen detection", buff); |
f641fccb |
163 | goto skip_screen; |
164 | } |
165 | |
166 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/overlay%d/manager", overlay_id); |
167 | ret = read_sysfs(buff, screen_name, sizeof(screen_name)); |
168 | if (ret < 0) { |
7b66578c |
169 | err("skip screen detection"); |
f641fccb |
170 | goto skip_screen; |
171 | } |
172 | |
173 | for (i = 0; ; i++) { |
174 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/name", i); |
175 | ret = read_sysfs(buff, buff, sizeof(buff)); |
176 | if (ret < 0) |
177 | break; |
178 | |
179 | if (strcmp(screen_name, buff) == 0) { |
180 | screen_id = i; |
181 | break; |
182 | } |
183 | } |
184 | |
185 | if (screen_id < 0) { |
7b66578c |
186 | err("could not find screen"); |
f641fccb |
187 | goto skip_screen; |
188 | } |
189 | |
190 | snprintf(buff, sizeof(buff), "/sys/devices/platform/omapdss/display%d/timings", screen_id); |
191 | f = fopen(buff, "r"); |
192 | if (f == NULL) { |
7b66578c |
193 | err("can't open %s, skip screen detection", buff); |
f641fccb |
194 | goto skip_screen; |
195 | } |
196 | |
197 | ret = fscanf(f, "%*d,%d/%*d/%*d/%*d,%d/%*d/%*d/%*d", &screen_w, &screen_h); |
198 | fclose(f); |
199 | if (ret != 2) { |
7b66578c |
200 | err("can't parse %s (%d), skip screen detection", buff, ret); |
f641fccb |
201 | goto skip_screen; |
202 | } |
203 | |
7b66578c |
204 | log("detected %dx%d '%s' (%d) screen attached to fb %d and overlay %d", |
f641fccb |
205 | screen_w, screen_h, screen_name, screen_id, fb_id, overlay_id); |
206 | |
207 | skip_screen: |
208 | tmp = getenv("SDL_OMAP_LAYER_SIZE"); |
209 | if (tmp != NULL) { |
210 | int w_, h_; |
211 | if (strcasecmp(tmp, "fullscreen") == 0) |
212 | w = screen_w, h = screen_h; |
213 | else if (sscanf(tmp, "%dx%d", &w_, &h_) == 2) |
214 | w = w_, h = h_; |
215 | else |
7b66578c |
216 | err("layer size specified incorrectly, " |
217 | "should be like 800x480"); |
f641fccb |
218 | } |
219 | |
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); |
223 | close(fd); |
224 | |
225 | return ret; |
226 | } |
227 | |
228 | int osdl_video_set_mode(struct SDL_PrivateVideoData *pdata, int width, int height, int bpp) |
229 | { |
230 | const char *fbname; |
231 | int ret; |
232 | |
233 | bpp = 16; // FIXME |
234 | |
235 | fbname = getenv("SDL_FBDEV"); |
236 | if (fbname == NULL) |
237 | fbname = "/dev/fb1"; |
238 | |
239 | if (pdata->fbdev != NULL) { |
240 | vout_fbdev_finish(pdata->fbdev); |
241 | pdata->fbdev = NULL; |
242 | } |
243 | |
244 | omapsdl_config_from_env(); |
245 | |
246 | ret = osdl_setup_omap_layer(pdata, fbname, width, height, bpp); |
247 | if (ret < 0) |
248 | return -1; |
249 | |
250 | pdata->fbdev = vout_fbdev_init(fbname, &width, &height, 0); |
251 | if (pdata->fbdev == NULL) |
252 | return -1; |
253 | |
254 | if (!pdata->oshide_done) { |
255 | oshide_init(); |
256 | pdata->oshide_done = 1; |
257 | } |
258 | |
259 | return 0; |
260 | } |
261 | |
262 | void *osdl_video_flip(struct SDL_PrivateVideoData *pdata) |
263 | { |
264 | if (pdata->fbdev == NULL) |
265 | return NULL; |
266 | |
267 | if (gcfg_force_vsync) |
268 | vout_fbdev_wait_vsync(pdata->fbdev); |
269 | |
270 | return vout_fbdev_flip(pdata->fbdev); |
271 | } |
272 | |
273 | void osdl_video_finish(struct SDL_PrivateVideoData *pdata) |
274 | { |
275 | static const char *fbname; |
276 | |
277 | fbname = getenv("SDL_FBDEV"); |
278 | if (fbname == NULL) |
279 | fbname = "/dev/fb1"; |
280 | |
281 | if (pdata->fbdev != NULL) { |
282 | vout_fbdev_finish(pdata->fbdev); |
283 | pdata->fbdev = NULL; |
284 | } |
285 | |
286 | /* restore the OMAP layer */ |
287 | if (pdata->saved_layer != NULL) { |
288 | struct omapfb_saved_layer *slayer = pdata->saved_layer; |
289 | int fd; |
290 | |
291 | fd = open(fbname, O_RDWR); |
292 | if (fd != -1) { |
293 | int enabled = slayer->pi.enabled; |
294 | |
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); |
299 | if (enabled) { |
300 | slayer->pi.enabled = enabled; |
301 | ioctl(fd, OMAPFB_SETUP_PLANE, &slayer->pi); |
302 | } |
303 | close(fd); |
304 | } |
305 | free(slayer); |
306 | pdata->saved_layer = NULL; |
307 | } |
308 | |
309 | if (pdata->oshide_done) { |
310 | oshide_finish(); |
311 | pdata->oshide_done = 0; |
312 | } |
313 | } |
314 | |