1 files changed, 97 insertions, 0 deletions
diff --git a/include/linux/amba/bus.h b/include/linux/amba/bus.h
new file mode 100644
index 00000000..fcbbe71a
--- /dev/null
+++ b/include/linux/amba/bus.h
@@ -0,0 +1,97 @@
+/*
+ *  linux/include/amba/bus.h
+ *
+ *  This device type deals with ARM PrimeCells and anything else that
+ *  presents a proper CID (0xB105F00D) at the end of the I/O register
+ *  region or that is derived from a PrimeCell.
+ *
+ *  Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved.
+ *
+ * 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 ASMARM_AMBA_H
+#define ASMARM_AMBA_H
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/resource.h>
+#include <linux/regulator/consumer.h>
+
+#define AMBA_NR_IRQS	2
+#define AMBA_CID	0xb105f00d
+
+struct clk;
+
+struct amba_device {
+	struct device		dev;
+	struct resource		res;
+	struct clk		*pclk;
+	struct regulator	*vcore;
+	u64			dma_mask;
+	unsigned int		periphid;
+	unsigned int		irq[AMBA_NR_IRQS];
+};
+
+struct amba_id {
+	unsigned int		id;
+	unsigned int		mask;
+	void			*data;
+};
+
+struct amba_driver {
+	struct device_driver	drv;
+	int			(*probe)(struct amba_device *, const struct amba_id *);
+	int			(*remove)(struct amba_device *);
+	void			(*shutdown)(struct amba_device *);
+	int			(*suspend)(struct amba_device *, pm_message_t);
+	int			(*resume)(struct amba_device *);
+	const struct amba_id	*id_table;
+};
+
+enum amba_vendor {
+	AMBA_VENDOR_ARM = 0x41,
+	AMBA_VENDOR_ST = 0x80,
+};
+
+extern struct bus_type amba_bustype;
+
+#define to_amba_device(d)	container_of(d, struct amba_device, dev)
+
+#define amba_get_drvdata(d)	dev_get_drvdata(&d->dev)
+#define amba_set_drvdata(d,p)	dev_set_drvdata(&d->dev, p)
+
+int amba_driver_register(struct amba_driver *);
+void amba_driver_unregister(struct amba_driver *);
+int amba_device_register(struct amba_device *, struct resource *);
+void amba_device_unregister(struct amba_device *);
+struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int);
+int amba_request_regions(struct amba_device *, const char *);
+void amba_release_regions(struct amba_device *);
+
+#define amba_pclk_enable(d)	\
+	(IS_ERR((d)->pclk) ? 0 : clk_enable((d)->pclk))
+
+#define amba_pclk_disable(d)	\
+	do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0)
+
+#define amba_vcore_enable(d)	\
+	(IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore))
+
+#define amba_vcore_disable(d)	\
+	do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0)
+
+/* Some drivers don't use the struct amba_device */
+#define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff)
+#define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f)
+#define AMBA_MANF_BITS(a) (((a) >> 12) & 0xff)
+#define AMBA_PART_BITS(a) ((a) & 0xfff)
+
+#define amba_config(d)	AMBA_CONFIG_BITS((d)->periphid)
+#define amba_rev(d)	AMBA_REV_BITS((d)->periphid)
+#define amba_manf(d)	AMBA_MANF_BITS((d)->periphid)
+#define amba_part(d)	AMBA_PART_BITS((d)->periphid)
+
+#endif