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-rw-r--r--arch/arm/include/asm/firmware.h78
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/arm/include/asm/firmware.h b/arch/arm/include/asm/firmware.h
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+++ b/arch/arm/include/asm/firmware.h
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+/*
+ * Copyright (C) 2012 Samsung Electronics.
+ * Kyungmin Park <kyungmin.park@samsung.com>
+ * Tomasz Figa <t.figa@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARM_FIRMWARE_H
+#define __ASM_ARM_FIRMWARE_H
+
+#include <linux/bug.h>
+
+/*
+ * struct firmware_ops
+ *
+ * A structure to specify available firmware operations.
+ *
+ * A filled up structure can be registered with register_firmware_ops().
+ */
+struct firmware_ops {
+ /*
+ * Inform the firmware we intend to enter CPU idle mode
+ */
+ int (*prepare_idle)(void);
+ /*
+ * Enters CPU idle mode
+ */
+ int (*do_idle)(unsigned long mode);
+ /*
+ * Sets boot address of specified physical CPU
+ */
+ int (*set_cpu_boot_addr)(int cpu, unsigned long boot_addr);
+ /*
+ * Boots specified physical CPU
+ */
+ int (*cpu_boot)(int cpu);
+ /*
+ * Initializes L2 cache
+ */
+ int (*l2x0_init)(void);
+ /*
+ * Enter system-wide suspend.
+ */
+ int (*suspend)(void);
+ /*
+ * Restore state of privileged hardware after system-wide suspend.
+ */
+ int (*resume)(void);
+};
+
+/* Global pointer for current firmware_ops structure, can't be NULL. */
+extern const struct firmware_ops *firmware_ops;
+
+/*
+ * call_firmware_op(op, ...)
+ *
+ * Checks if firmware operation is present and calls it,
+ * otherwise returns -ENOSYS
+ */
+#define call_firmware_op(op, ...) \
+ ((firmware_ops->op) ? firmware_ops->op(__VA_ARGS__) : (-ENOSYS))
+
+/*
+ * register_firmware_ops(ops)
+ *
+ * A function to register platform firmware_ops struct.
+ */
+static inline void register_firmware_ops(const struct firmware_ops *ops)
+{
+ BUG_ON(!ops);
+
+ firmware_ops = ops;
+}
+
+#endif