From: Lyude Paul <lyude@xxxxxxxxxx>
Like igt_debugfs_connector_dir(), but for pipes instead.
Changes since v4:
* Make igt_debugfs_pipe_dir() much smaller - jcline
* Fixup docs - jcline
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
---
lib/igt_debugfs.c | 21 +++++++++++++++++++++
lib/igt_debugfs.h | 1 +
2 files changed, 22 insertions(+)
diff --git a/lib/igt_debugfs.c b/lib/igt_debugfs.c
index 05067078..c4dab392 100644
--- a/lib/igt_debugfs.c
+++ b/lib/igt_debugfs.c
@@ -260,6 +260,27 @@ int igt_debugfs_connector_dir(int device, char *conn_name, int mode)
return ret;
}
+/**
+ * igt_debugfs_pipe_dir:
+ * @device: fd of the device
+ * @pipe: index of pipe
+ * @mode: mode bits as used by open()
+ *
+ * This opens the debugfs directory corresponding to the pipe index on the
+ * device for use with igt_sysfs_get() and related functions. This is just
+ * syntax sugar for igt_debugfs_open().
+ *
+ * Returns:
+ * The directory fd, or -1 on failure.
+ */
+int igt_debugfs_pipe_dir(int device, int pipe, int mode)
+{
+ char buf[128];
+
+ snprintf(buf, sizeof(buf), "crtc-%d", pipe);
+ return igt_debugfs_open(device, buf, mode);
+}
+
/**
* igt_debugfs_open:
* @filename: name of the debugfs node to open
diff --git a/lib/igt_debugfs.h b/lib/igt_debugfs.h
index 722c5cc3..d43ba6c6 100644
--- a/lib/igt_debugfs.h
+++ b/lib/igt_debugfs.h
@@ -36,6 +36,7 @@ char *igt_debugfs_path(int device, char *path, int pathlen);
int igt_debugfs_dir(int device);
int igt_debugfs_connector_dir(int device, char *conn_name, int mode);
+int igt_debugfs_pipe_dir(int device, int pipe, int mode);
int igt_debugfs_open(int fd, const char *filename, int mode);
void __igt_debugfs_read(int fd, const char *filename, char *buf, int size);
--
2.26.2
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