From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Add __igt_params_get for simple reading of modparams.
v2:
* Fix kerneldoc. (Matt)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
lib/igt_params.c | 26 ++++++++++++++++++++++++++
lib/igt_params.h | 2 ++
2 files changed, 28 insertions(+)
diff --git a/lib/igt_params.c b/lib/igt_params.c
index c06416988baa..3dad317a56b2 100644
--- a/lib/igt_params.c
+++ b/lib/igt_params.c
@@ -156,6 +156,32 @@ int igt_params_open(int device)
return params;
}
+/**
+ * __igt_params_get:
+ * @device: fd of the device
+ * @parameter: the name of the parameter to get
+ *
+ * This reads the value of the modparam.
+ *
+ * Returns:
+ * A nul-terminated string, must be freed by caller after use, or NULL
+ * on failure.
+ */
+char *__igt_params_get(int device, const char *parameter)
+{
+ char *str;
+ int dir;
+
+ dir = igt_params_open(device);
+ if (dir < 0)
+ return NULL;
+
+ str = igt_sysfs_get(dir, parameter);
+ close(dir);
+
+ return str;
+}
+
__attribute__((format(printf, 3, 0)))
static bool __igt_params_set(int device, const char *parameter,
const char *fmt, va_list ap, bool save)
diff --git a/lib/igt_params.h b/lib/igt_params.h
index bbd6f3ee6582..6494786f0696 100644
--- a/lib/igt_params.h
+++ b/lib/igt_params.h
@@ -28,6 +28,8 @@
int igt_params_open(int device);
+char *__igt_params_get(int device, const char *parameter);
+
__attribute__((format(printf, 3, 4)))
bool igt_params_set(int device, const char *parameter, const char *fmt, ...);
--
2.27.0
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