From 6e2b3424b4d9d58c7bb5d3cef4d7762e3817d554 Mon Sep 17 00:00:00 2001
From: Christophe Priouzeau <christophe.priouzeau@st.com>
Date: Thu, 7 Nov 2019 14:32:28 +0100
Subject: [PATCH 1/2] tests/modetest: automatic configuration
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Add a new option to set automatically a mode using default crtc,
encoder and mode.

Signed-off-by: Yannick Fertré <yannick.fertre@st.com>
---
 tests/modetest/modetest.c | 54 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index e66be66..018338c 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -1811,7 +1811,7 @@ static void parse_fill_patterns(char *arg)
 
 static void usage(char *name)
 {
-	fprintf(stderr, "usage: %s [-acDdefMPpsCvw]\n", name);
+	fprintf(stderr, "usage: %s [-acDdefMPpsCvwA]\n", name);
 
 	fprintf(stderr, "\n Query options:\n\n");
 	fprintf(stderr, "\t-c\tlist connectors\n");
@@ -1832,6 +1832,7 @@ static void usage(char *name)
 	fprintf(stderr, "\t-d\tdrop master after mode set\n");
 	fprintf(stderr, "\t-M module\tuse the given driver\n");
 	fprintf(stderr, "\t-D device\tuse the given device\n");
+	fprintf(stderr, "\t-A Set a mode using default crtc, encoder and mode.\n");
 
 	fprintf(stderr, "\n\tDefault is to dump all info.\n");
 	exit(0);
@@ -1890,7 +1891,7 @@ static int pipe_resolve_connectors(struct device *dev, struct pipe_arg *pipe)
 	return 0;
 }
 
-static char optstr[] = "acdD:efF:M:P:ps:Cvw:";
+static char optstr[] = "acdD:efF:M:P:ps:Cvw:A";
 
 int main(int argc, char **argv)
 {
@@ -1911,6 +1912,7 @@ int main(int argc, char **argv)
 	struct plane_arg *plane_args = NULL;
 	struct property_arg *prop_args = NULL;
 	unsigned int args = 0;
+	bool auto_configuration = false;
 	int ret;
 
 	memset(&dev, 0, sizeof dev);
@@ -1999,12 +2001,18 @@ int main(int argc, char **argv)
 
 			prop_count++;
 			break;
+		case 'A':
+			auto_configuration = true;
+			break;
 		default:
 			usage(argv[0]);
 			break;
 		}
 	}
 
+	if (auto_configuration)
+		use_atomic = false;
+
 	if (!args || (args == 1 && use_atomic))
 		encoders = connectors = crtcs = planes = framebuffers = 1;
 
@@ -2042,6 +2050,48 @@ int main(int argc, char **argv)
 		return 1;
 	}
 
+#define connector_status_connected 1
+	if (auto_configuration)	{
+		struct resources *resources = dev.resources;
+		drmModeConnector *connector;
+		char auto_arg[32];
+		int j;
+
+		if (!resources->res->count_connectors ||
+		    !resources->res->count_crtcs) {
+			fprintf(stderr, "Cannot find connector or crtc\n");
+			return 1;
+		}
+
+		for (j = 0; j < resources->res->count_connectors; j++) {
+			connector = resources->connectors[j].connector;
+			if(connector->connection == connector_status_connected)
+				break;
+		}
+
+		if (!connector->count_modes) {
+			fprintf(stderr, "Cannot find mode\n");
+			return 1;
+		}
+
+		snprintf(auto_arg, sizeof(auto_arg) - 1, "%d@%d:%s-%d@%s\n",
+			 connector->connector_id, resources->res->crtcs[0],
+			 connector->modes[0].name, connector->modes[0].vrefresh,
+			 "XR24");
+
+		pipe_args = realloc(pipe_args, sizeof *pipe_args);
+		if (pipe_args == NULL) {
+			fprintf(stderr, "memory allocation failed\n");
+			return 2;
+		}
+		memset(&pipe_args[count], 0, sizeof(*pipe_args));
+
+		if (parse_connector(&pipe_args[count], auto_arg) < 0)
+			return 3;
+		/* fix to one plane without atomic */
+		count = 1;
+	}
+
 	for (i = 0; i < count; i++) {
 		if (pipe_resolve_connectors(&dev, &pipe_args[i]) < 0) {
 			free_resources(dev.resources);
-- 
2.17.1