lib/igt_eld: introduce eld_is_supported

1/1

---
 lib/igt_eld.c           | 30 ++++++++++++++++++++++++++++++
 lib/igt_eld.h           |  1 +
 tests/kms_chamelium.c   |  2 ++
 tests/kms_hdmi_inject.c |  2 ++
 4 files changed, 35 insertions(+)
index 16c4ac06c6f6..8fdc6e8e8f0b 100644
@@ -26,6 +26,7 @@
 #include "config.h"
 
 #include <dirent.h>
+#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

@@ -262,3 +263,32 @@ bool eld_has_igt(void)
 	struct eld_entry eld;
 	return eld_get_igt(&eld);
 }
+
+/** eld_is_supported: check whether the ALSA procfs is enabled and audio cards
+ * are found */
+bool eld_is_supported(void)
+{
+	FILE *f;
+	char buf[1024];
+
+	f = fopen("/proc/asound/cards", "r");
+	if (f == NULL) {
+		if (errno == ENOENT) {
+			igt_debug("/proc/asound doesn't exist\n");
+			return false;
+		}
+		igt_assert_f(false,
+			     "Failed to open /proc/asound/cards "
+			     "(but the file exists)\n");
+	}
+
+	igt_assert_f(fgets(buf, sizeof(buf), f) != NULL,
+		     "fgets failed\n");
+	igt_assert_f(buf[0] != '\0', "/proc/asound/cards is empty\n");
+	fclose(f);
+
+	bool has_card = strstr(buf, "no soundcards") == NULL;
+	if (!has_card)
+		igt_debug("No sound card found by ALSA\n");
+	return has_card;
+}

index 7c4489f054f1..4b917a62cfaf 100644
@@ -49,6 +49,7 @@ struct eld_entry {
 	struct eld_sad sads[ELD_SADS_CAP];
 };
 
+bool eld_is_supported(void);
 bool eld_get_igt(struct eld_entry *eld);
 bool eld_has_igt(void);
 

index b122722a9ff4..523300980550 100644
@@ -1968,6 +1968,8 @@ test_display_audio_edid(data_t *data, struct chamelium_port *port,
 	struct eld_entry eld;
 	struct eld_sad *sad;
 
+	igt_require(eld_is_supported());
+
 	reset_state(data, port);
 
 	output = prepare_output(data, port, edid);

index d9ab4095b8c5..1769df088bbc 100644
@@ -142,6 +142,8 @@ hdmi_inject_audio(int drm_fd, drmModeConnector *connector)
 	struct igt_fb fb;
 	struct kmstest_connector_config config;
 
+	igt_require(eld_is_supported());
+
 	edid = igt_kms_get_hdmi_audio_edid();
 	kmstest_force_edid(drm_fd, connector, edid);
 

---
 lib/igt_eld.c           | 30 ++++++++++++++++++++++++++++++
 lib/igt_eld.h           |  1 +
 tests/kms_chamelium.c   |  2 ++
 tests/kms_hdmi_inject.c |  2 ++
 4 files changed, 35 insertions(+)
index 16c4ac06c6f6..8fdc6e8e8f0b 100644
@@ -26,6 +26,7 @@
 #include "config.h"
 
 #include <dirent.h>
+#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

@@ -262,3 +263,32 @@ bool eld_has_igt(void)
        struct eld_entry eld;
        return eld_get_igt(&eld);
 }
+
+/** eld_is_supported: check whether the ALSA procfs is enabled and audio cards
+ * are found */
+bool eld_is_supported(void)

+{
+       FILE *f;
+       char buf[1024];
+
+       f = fopen("/proc/asound/cards", "r");
+       if (f == NULL) {
+               if (errno == ENOENT) {
+                       igt_debug("/proc/asound doesn't exist\n");
+                       return false;
+               }
+               igt_assert_f(false,

+                            "Failed to open /proc/asound/cards "
+                            "(but the file exists)\n");
+       }
+
+       igt_assert_f(fgets(buf, sizeof(buf), f) != NULL,
+                    "fgets failed\n");
+       igt_assert_f(buf[0] != '\0', "/proc/asound/cards is empty\n");
+       fclose(f);
+
+       bool has_card = strstr(buf, "no soundcards") == NULL;

---
 lib/igt_eld.c           | 30 ++++++++++++++++++++++++++++++
 lib/igt_eld.h           |  1 +
 tests/kms_chamelium.c   |  2 ++
 tests/kms_hdmi_inject.c |  2 ++
 4 files changed, 35 insertions(+)
index 16c4ac06c6f6..8fdc6e8e8f0b 100644
@@ -26,6 +26,7 @@
 #include "config.h"
 

 #include <dirent.h>
+#include <errno.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>

@@ -262,3 +263,32 @@ bool eld_has_igt(void)
        struct eld_entry eld;
        return eld_get_igt(&eld);
 }
+
+/** eld_is_supported: check whether the ALSA procfs is enabled and audio cards
+ * are found */
+bool eld_is_supported(void)

+{
+       FILE *f;
+       char buf[1024];
+
+       f = fopen("/proc/asound/cards", "r");
+       if (f == NULL) {
+               if (errno == ENOENT) {
+                       igt_debug("/proc/asound doesn't exist\n");
+                       return false;
+               }
+               igt_assert_f(false,
+                            "Failed to open /proc/asound/cards "
+                            "(but the file exists)\n");
+       }
+

+       igt_assert_f(fgets(buf, sizeof(buf), f) != NULL,
+                    "fgets failed\n");
+       igt_assert_f(buf[0] != '\0', "/proc/asound/cards is empty\n");
+       fclose(f);
+
+       bool has_card = strstr(buf, "no soundcards") == NULL;


lib/igt_eld: introduce eld_is_supported

Simon Ser

Chris Wilson

Ser, Simon

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