[PATCH] modetest: add the possibility to select the refresh frequency for a mode

[Vincent ABRIOU]

When mode is selected we only give the name of the mode as parameter.
But sometime, two different modes have the same name but not
the same vrefresh frequency.
This patch give the possibility to select a mode by its name
and optionally by its refresh frequency.

Signed-off-by: Vincent Abriou <vincent.abriou at st.com>
---
 tests/modetest/modetest.c |   35 +++++++++++++++++++++++++++--------
 1 file changed, 27 insertions(+), 8 deletions(-)

diff --git a/tests/modetest/modetest.c b/tests/modetest/modetest.c
index 51c4e6d..bc9c998 100644
--- a/tests/modetest/modetest.c
+++ b/tests/modetest/modetest.c
@@ -693,6 +693,7 @@ struct pipe_arg {
 	uint32_t crtc_id;
 	char mode_str[64];
 	char format_str[5];
+	unsigned int vrefresh;
 	unsigned int fourcc;
 	drmModeModeInfo *mode;
 	struct crtc *crtc;
@@ -714,7 +715,8 @@ struct plane_arg {
 };
 
 static drmModeModeInfo *
-connector_find_mode(struct device *dev, uint32_t con_id, const char *mode_str)
+connector_find_mode(struct device *dev, uint32_t con_id, const char *mode_str,
+        const unsigned int vrefresh)
 {
 	drmModeConnector *connector;
 	drmModeModeInfo *mode;
@@ -726,8 +728,16 @@ connector_find_mode(struct device *dev, uint32_t con_id, const char *mode_str)
 
 	for (i = 0; i < connector->count_modes; i++) {
 		mode = &connector->modes[i];
-		if (!strcmp(mode->name, mode_str))
-			return mode;
+		if (!strcmp(mode->name, mode_str)) {
+			/* If the vertical refresh frequency is not specified then return the
+			 * first mode that match with the name. Else, return the mode that match
+			 * the name and the specified vertical refresh frequency.
+			 */
+			if (vrefresh == 0)
+				return mode;
+			else if (mode->vrefresh == vrefresh)
+				return mode;
+		}
 	}
 
 	return NULL;
@@ -789,7 +799,7 @@ static int pipe_find_crtc_and_mode(struct device *dev, struct pipe_arg *pipe)
 
 	for (i = 0; i < (int)pipe->num_cons; i++) {
 		mode = connector_find_mode(dev, pipe->con_ids[i],
-					   pipe->mode_str);
+					   pipe->mode_str, pipe->vrefresh);
 		if (mode == NULL) {
 			fprintf(stderr,
 				"failed to find mode \"%s\" for connector %u\n",
@@ -1059,8 +1069,8 @@ static void set_mode(struct device *dev, struct pipe_arg *pipes, unsigned int co
 		if (pipe->mode == NULL)
 			continue;
 
-		printf("setting mode %s@%s on connectors ",
-		       pipe->mode_str, pipe->format_str);
+		printf("setting mode %s-%dHz@%s on connectors ",
+		       pipe->mode_str, pipe->mode->vrefresh, pipe->format_str);
 		for (j = 0; j < pipe->num_cons; ++j)
 			printf("%u, ", pipe->con_ids[j]);
 		printf("crtc %d\n", pipe->crtc->crtc->crtc_id);
@@ -1192,6 +1202,7 @@ static int parse_connector(struct pipe_arg *pipe, const char *arg)
 	const char *p;
 	char *endp;
 
+	pipe->vrefresh = 0;
 	pipe->crtc_id = (uint32_t)-1;
 	strcpy(pipe->format_str, "XR24");
 
@@ -1226,11 +1237,19 @@ static int parse_connector(struct pipe_arg *pipe, const char *arg)
 
 	arg = endp + 1;
 
-	p = strchrnul(arg, '@');
+	/* Search for the vertical refresh or the format. */
+	p = strpbrk(arg, "-@");
+	if (p == NULL)
+		p = arg + strlen(arg);
 	len = min(sizeof pipe->mode_str - 1, (unsigned int)(p - arg));
 	strncpy(pipe->mode_str, arg, len);
 	pipe->mode_str[len] = '\0';
 
+	if (*p == '-') {
+		pipe->vrefresh = strtoul(p + 1, &endp, 10);
+		p = endp;
+	}
+
 	if (*p == '@') {
 		strncpy(pipe->format_str, p + 1, 4);
 		pipe->format_str[4] = '\0';
@@ -1323,7 +1342,7 @@ static void usage(char *name)
 
 	fprintf(stderr, "\n Test options:\n\n");
 	fprintf(stderr, "\t-P <crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]\tset a plane\n");
-	fprintf(stderr, "\t-s <connector_id>[,<connector_id>][@<crtc_id>]:<mode>[@<format>]\tset a mode\n");
+	fprintf(stderr, "\t-s <connector_id>[,<connector_id>][@<crtc_id>]:<mode>[-<vrefresh>][@<format>]\tset a mode\n");
 	fprintf(stderr, "\t-v\ttest vsynced page flipping\n");
 	fprintf(stderr, "\t-w <obj_id>:<prop_name>:<value>\tset property\n");
 
-- 
1.7.9.5