modetest: Add a command line parameter to drop master after mode set

If the -d parameter is specified, modetest will drop master permissions
after setting the mode.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index f3d4dcf..d1fcc5d 100644 (file)
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -894,7 +894,7 @@ static int parse_plane(struct plane *p, const char *arg)
 
 static void usage(char *name)
 {
-       fprintf(stderr, "usage: %s [-cefMmPpsv]\n", name);
+       fprintf(stderr, "usage: %s [-cdefMmPpsv]\n", name);
 
        fprintf(stderr, "\n Query options:\n\n");
        fprintf(stderr, "\t-c\tlist connectors\n");
@@ -909,6 +909,7 @@ static void usage(char *name)
        fprintf(stderr, "\t-v\ttest vsynced page flipping\n");
 
        fprintf(stderr, "\n Generic options:\n\n");
+       fprintf(stderr, "\t-d\tdrop master after mode set\n");
        fprintf(stderr, "\t-M module\tuse the given driver\n");
 
        fprintf(stderr, "\n\tDefault is to dump all info.\n");
@@ -938,12 +939,13 @@ static int page_flipping_supported(void)
 #endif
 }
 
-static char optstr[] = "cefM:mP:ps:v";
+static char optstr[] = "cdefM:mP:ps:v";
 
 int main(int argc, char **argv)
 {
        int c;
        int encoders = 0, connectors = 0, crtcs = 0, planes = 0, framebuffers = 0;
+       int drop_master = 0;
        int test_vsync = 0;
        const char *modules[] = { "i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", "tilcdc" };
        char *module = NULL;
@@ -961,6 +963,9 @@ int main(int argc, char **argv)
                case 'c':
                        connectors = 1;
                        break;
+               case 'd':
+                       drop_master = 1;
+                       break;
                case 'e':
                        encoders = 1;
                        break;
@@ -1046,6 +1051,8 @@ int main(int argc, char **argv)
 
        if (count > 0) {
                set_mode(con_args, count, plane_args, plane_count, test_vsync);
+               if (drop_master)
+                       drmDropMaster(fd);
                getchar();
        }