1 files changed, 121 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/core/option.c b/drivers/gpu/drm/nouveau/nvkm/core/option.c
new file mode 100644
index 000000000000..19d153f8c8fd
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/core/option.c
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+#include <core/option.h>
+#include <core/debug.h>
+
+const char *
+nvkm_stropt(const char *optstr, const char *opt, int *arglen)
+{
+	while (optstr && *optstr != '\0') {
+		int len = strcspn(optstr, ",=");
+		switch (optstr[len]) {
+		case '=':
+			if (!strncasecmpz(optstr, opt, len)) {
+				optstr += len + 1;
+				*arglen = strcspn(optstr, ",=");
+				return *arglen ? optstr : NULL;
+			}
+			optstr++;
+			break;
+		case ',':
+			optstr++;
+			break;
+		default:
+			break;
+		}
+		optstr += len;
+	}
+
+	return NULL;
+}
+
+bool
+nvkm_boolopt(const char *optstr, const char *opt, bool value)
+{
+	int arglen;
+
+	optstr = nvkm_stropt(optstr, opt, &arglen);
+	if (optstr) {
+		if (!strncasecmpz(optstr, "0", arglen) ||
+		    !strncasecmpz(optstr, "no", arglen) ||
+		    !strncasecmpz(optstr, "off", arglen) ||
+		    !strncasecmpz(optstr, "false", arglen))
+			value = false;
+		else
+		if (!strncasecmpz(optstr, "1", arglen) ||
+		    !strncasecmpz(optstr, "yes", arglen) ||
+		    !strncasecmpz(optstr, "on", arglen) ||
+		    !strncasecmpz(optstr, "true", arglen))
+			value = true;
+	}
+
+	return value;
+}
+
+int
+nvkm_dbgopt(const char *optstr, const char *sub)
+{
+	int mode = 1, level = CONFIG_NOUVEAU_DEBUG_DEFAULT;
+
+	while (optstr) {
+		int len = strcspn(optstr, ",=");
+		switch (optstr[len]) {
+		case '=':
+			if (strncasecmpz(optstr, sub, len))
+				mode = 0;
+			optstr++;
+			break;
+		default:
+			if (mode) {
+				if (!strncasecmpz(optstr, "fatal", len))
+					level = NV_DBG_FATAL;
+				else if (!strncasecmpz(optstr, "error", len))
+					level = NV_DBG_ERROR;
+				else if (!strncasecmpz(optstr, "warn", len))
+					level = NV_DBG_WARN;
+				else if (!strncasecmpz(optstr, "info", len))
+					level = NV_DBG_INFO_NORMAL;
+				else if (!strncasecmpz(optstr, "debug", len))
+					level = NV_DBG_DEBUG;
+				else if (!strncasecmpz(optstr, "trace", len))
+					level = NV_DBG_TRACE;
+				else if (!strncasecmpz(optstr, "paranoia", len))
+					level = NV_DBG_PARANOIA;
+				else if (!strncasecmpz(optstr, "spam", len))
+					level = NV_DBG_SPAM;
+			}
+
+			if (optstr[len] != '\0') {
+				optstr++;
+				mode = 1;
+				break;
+			}
+
+			return level;
+		}
+		optstr += len;
+	}
+
+	return level;
+}