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

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright (c) 2018-2019, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef STM32MP_RESET_H
+#define STM32MP_RESET_H
+
+#include <stdint.h>
+
+/*
+ * Assert target reset, if @to_us non null, wait until reset is asserted
+ *
+ * @reset_id: Reset controller ID
+ * @to_us: Timeout in microsecond, or 0 if not waiting
+ * Return 0 on success and -ETIMEDOUT if waiting and timeout expired
+ */
+int stm32mp_reset_assert(uint32_t reset_id, unsigned int to_us);
+
+/*
+ * Enable reset control for target resource
+ *
+ * @reset_id: Reset controller ID
+ */
+static inline void stm32mp_reset_set(uint32_t reset_id)
+{
+	(void)stm32mp_reset_assert(reset_id, 0U);
+}
+
+/*
+ * Deassert target reset, if @to_us non null, wait until reset is deasserted
+ *
+ * @reset_id: Reset controller ID
+ * @to_us: Timeout in microsecond, or 0 if not waiting
+ * Return 0 on success and -ETIMEDOUT if waiting and timeout expired
+ */
+int stm32mp_reset_deassert(uint32_t reset_id, unsigned int to_us);
+
+/*
+ * Release reset control for target resource
+ *
+ * @reset_id: Reset controller ID
+ */
+static inline void stm32mp_reset_release(uint32_t reset_id)
+{
+	(void)stm32mp_reset_deassert(reset_id, 0U);
+}
+
+#endif /* STM32MP_RESET_H */