[PATCH] tests/testdisplay: Specify the display.

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It can specify the display when use option '-o'.
E.g. command "./testdiplay -o 1,4" means setting number 4 mode line on the number 1 display.

Signed-off-by: Yi Sun <yi.sun at intel.com>

diff --git a/tests/testdisplay.c b/tests/testdisplay.c
index 7287487..dda4eaa 100644
--- a/tests/testdisplay.c
+++ b/tests/testdisplay.c
@@ -72,7 +72,7 @@ int dump_info = 0, test_all_modes =0, test_preferred_mode = 0, force_mode = 0,
 int sleep_between_modes = 5;
 uint32_t depth = 24, stride, bpp;
 int qr_code = 0;
-int only_one_mode = 0, specified_mode_num = 0;
+int only_one_mode = 0, specified_mode_num = 0, specified_disp_num = 0;
 
 drmModeModeInfo force_timing;
 
@@ -597,6 +597,8 @@ int update_display(void)
 	if (test_preferred_mode || test_all_modes || force_mode || only_one_mode) {
 		/* Find any connected displays */
 		for (c = 0; c < resources->count_connectors; c++) {
+			if ( c != specified_disp_num ) continue;
+
 			connectors[c].id = resources->connectors[c];
 			set_mode(&connectors[c]);
 		}
@@ -618,7 +620,7 @@ static void __attribute__((noreturn)) usage(char *name)
 	fprintf(stderr, "\t-m\ttest the preferred mode\n");
 	fprintf(stderr, "\t-t\tuse a tiled framebuffer\n");
 	fprintf(stderr, "\t-r\tprint a QR code on the screen whose content is \"pass\" for the automatic test\n");
-	fprintf(stderr, "\t-o\t<number of the mode>\tonly test specified mode\n");
+	fprintf(stderr, "\t-o\t<number of the display>,<number of the mode>\tonly test specified mode on the specified display\n");
 	fprintf(stderr, "\t-f\t<clock MHz>,<hdisp>,<hsync-start>,<hsync-end>,<htotal>,\n");
 	fprintf(stderr, "\t\t<vdisp>,<vsync-start>,<vsync-end>,<vtotal>\n");
 	fprintf(stderr, "\t\ttest force mode\n");
@@ -715,7 +717,7 @@ int main(int argc, char **argv)
 			break;
 		case 'o':
 			only_one_mode = 1;
-			specified_mode_num = atoi(optarg);
+			sscanf(optarg, "%d,%d", &specified_disp_num, &specified_mode_num);
 			break;
 		default:
 			fprintf(stderr, "unknown option %c\n", c);
-- 
1.7.5.1



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