[PATCH i-g-t v9 16/49] lib/monitor_edids: Add helper to get an EDID by its name

[Louis Chauvet <louis.chauvet@bootlin.com>]

For testing specific EDID, it is useful to be able to retrieve an EDID by
a verbose name.

Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
---
 lib/monitor_edids/monitor_edids_helper.c | 30 ++++++++++++++++++++++++++++++
 lib/monitor_edids/monitor_edids_helper.h |  1 +
 2 files changed, 31 insertions(+)

diff --git a/lib/monitor_edids/monitor_edids_helper.c b/lib/monitor_edids/monitor_edids_helper.c
index 6043e7a084b3..34446066346e 100644
--- a/lib/monitor_edids/monitor_edids_helper.c
+++ b/lib/monitor_edids/monitor_edids_helper.c
@@ -20,6 +20,16 @@
 #include "drmtest.h"
 #include "hdmi_edids.h"
 
+struct {
+	struct monitor_edid *edid_list;
+	int list_size;
+} ALL_EDIDS[] = {
+	{DP_EDIDS_NON_4K,	DP_EDIDS_NON_4K_COUNT},
+	{DP_EDIDS_4K,		DP_EDIDS_4K_COUNT},
+	{HDMI_EDIDS_NON_4K,	HDMI_EDIDS_NON_4K_COUNT},
+	{HDMI_EDIDS_4K,		HDMI_EDIDS_4K_COUNT},
+};
+
 static uint8_t convert_hex_char_to_byte(char c)
 {
 	if (c >= '0' && c <= '9')
@@ -170,3 +180,23 @@ struct monitor_edid *get_edids_for_connector_type(uint32_t type, size_t *count,
 		}
 	}
 }
+
+/**
+ * get_edid_by_name:
+ * @name: Name to search in available EDIDs
+ *
+ * Return the struct edid associated with a specific name. As with edid_from_monitor_edid, the
+ * caller must ensure to free the EDID after use. If no EDID with the exact name is found, returns
+ * NULL.
+ */
+struct edid *get_edid_by_name(const char *name)
+{
+	for (int i = 0; i < ARRAY_SIZE(ALL_EDIDS); i++) {
+		for (int j = 0; j < ALL_EDIDS[i].list_size; j++) {
+			if (strncmp(ALL_EDIDS[i].edid_list[j].name, name, EDID_NAME_MAX_LEN) == 0)
+				return edid_from_monitor_edid(&ALL_EDIDS[i].edid_list[j]);
+		}
+	}
+
+	return NULL;
+}
diff --git a/lib/monitor_edids/monitor_edids_helper.h b/lib/monitor_edids/monitor_edids_helper.h
index e5069868683d..6d9e3fc89592 100644
--- a/lib/monitor_edids/monitor_edids_helper.h
+++ b/lib/monitor_edids/monitor_edids_helper.h
@@ -34,5 +34,6 @@ void free_chamelium_edid_from_monitor_edid(struct chamelium_edid *edid);
 
 struct edid *edid_from_monitor_edid(const monitor_edid *monitor_edid);
 struct monitor_edid *get_edids_for_connector_type(uint32_t type, size_t *count, bool four_k);
+struct edid *get_edid_by_name(const char *name);
 
 #endif /* TESTS_CHAMELIUM_MONITOR_EDIDS_MONITOR_EDIDS_HELPER_H_ */

-- 
2.52.0