GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/trusted-firmware/trusted-firmware-a-2.8/drivers/clk/clk.c

@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2021, STMicroelectronics - All Rights Reserved
+ * Author(s): Ludovic Barre, <ludovic.barre@st.com> for STMicroelectronics.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+#include <stdbool.h>
+
+#include <drivers/clk.h>
+
+static const struct clk_ops *ops;
+
+int clk_enable(unsigned long id)
+{
+	assert((ops != NULL) && (ops->enable != NULL));
+
+	return ops->enable(id);
+}
+
+void clk_disable(unsigned long id)
+{
+	assert((ops != NULL) && (ops->disable != NULL));
+
+	ops->disable(id);
+}
+
+unsigned long clk_get_rate(unsigned long id)
+{
+	assert((ops != NULL) && (ops->get_rate != NULL));
+
+	return ops->get_rate(id);
+}
+
+int clk_get_parent(unsigned long id)
+{
+	assert((ops != NULL) && (ops->get_parent != NULL));
+
+	return ops->get_parent(id);
+}
+
+bool clk_is_enabled(unsigned long id)
+{
+	assert((ops != NULL) && (ops->is_enabled != NULL));
+
+	return ops->is_enabled(id);
+}
+
+/*
+ * Initialize the clk. The fields in the provided clk
+ * ops pointer must be valid.
+ */
+void clk_register(const struct clk_ops *ops_ptr)
+{
+	assert((ops_ptr != NULL) &&
+	       (ops_ptr->enable != NULL) &&
+	       (ops_ptr->disable != NULL) &&
+	       (ops_ptr->get_rate != NULL) &&
+	       (ops_ptr->get_parent != NULL) &&
+	       (ops_ptr->is_enabled != NULL));
+
+	ops = ops_ptr;
+}