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/*
* 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)
#ifdef CONFIG_PM_SLEEP
extern int amba_pm_prepare(struct device *dev);
extern void amba_pm_complete(struct device *dev);
#else
#define amba_pm_prepare NULL
#define amba_pm_complete NULL
#endif
#ifdef CONFIG_SUSPEND
extern int amba_pm_suspend(struct device *dev);
extern int amba_pm_suspend_noirq(struct device *dev);
extern int amba_pm_resume(struct device *dev);
extern int amba_pm_resume_noirq(struct device *dev);
#else
#define amba_pm_suspend NULL
#define amba_pm_resume NULL
#define amba_pm_suspend_noirq NULL
#define amba_pm_resume_noirq NULL
#endif
#ifdef CONFIG_HIBERNATE_CALLBACKS
extern int amba_pm_freeze(struct device *dev);
extern int amba_pm_freeze_noirq(struct device *dev);
extern int amba_pm_thaw(struct device *dev);
extern int amba_pm_thaw_noirq(struct device *dev);
extern int amba_pm_poweroff(struct device *dev);
extern int amba_pm_poweroff_noirq(struct device *dev);
extern int amba_pm_restore(struct device *dev);
extern int amba_pm_restore_noirq(struct device *dev);
#else
#define amba_pm_freeze NULL
#define amba_pm_thaw NULL
#define amba_pm_poweroff NULL
#define amba_pm_restore NULL
#define amba_pm_freeze_noirq NULL
#define amba_pm_thaw_noirq NULL
#define amba_pm_poweroff_noirq NULL
#define amba_pm_restore_noirq NULL
#endif
#ifdef CONFIG_PM_SLEEP
#define USE_AMBA_PM_SLEEP_OPS \
.prepare = amba_pm_prepare, \
.complete = amba_pm_complete, \
.suspend = amba_pm_suspend, \
.resume = amba_pm_resume, \
.freeze = amba_pm_freeze, \
.thaw = amba_pm_thaw, \
.poweroff = amba_pm_poweroff, \
.restore = amba_pm_restore, \
.suspend_noirq = amba_pm_suspend_noirq, \
.resume_noirq = amba_pm_resume_noirq, \
.freeze_noirq = amba_pm_freeze_noirq, \
.thaw_noirq = amba_pm_thaw_noirq, \
.poweroff_noirq = amba_pm_poweroff_noirq, \
.restore_noirq = amba_pm_restore_noirq,
#else
#define USE_AMBA_PM_SLEEP_OPS
#endif
#endif
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