/include/linux/amba/bus.h
https://github.com/airy09/android_kernel_sony_apq8064 · C Header · 130 lines · 82 code · 19 blank · 29 comment · 2 complexity · 4c2609bc49fb4beff0e4974be92341e0 MD5 · raw file
- /*
- * 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/mod_devicetable.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;
- u64 dma_mask;
- unsigned int periphid;
- unsigned int irq[AMBA_NR_IRQS];
- };
- 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 *);
- struct amba_device *amba_device_alloc(const char *, resource_size_t, size_t);
- void amba_device_put(struct amba_device *);
- int amba_device_add(struct amba_device *, struct resource *);
- 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)
- /* 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)
- #define __AMBA_DEV(busid, data, mask) \
- { \
- .coherent_dma_mask = mask, \
- .init_name = busid, \
- .platform_data = data, \
- }
- /*
- * APB devices do not themselves have the ability to address memory,
- * so DMA masks should be zero (much like USB peripheral devices.)
- * The DMA controller DMA masks should be used instead (much like
- * USB host controllers in conventional PCs.)
- */
- #define AMBA_APB_DEVICE(name, busid, id, base, irqs, data) \
- struct amba_device name##_device = { \
- .dev = __AMBA_DEV(busid, data, 0), \
- .res = DEFINE_RES_MEM(base, SZ_4K), \
- .irq = irqs, \
- .periphid = id, \
- }
- /*
- * AHB devices are DMA capable, so set their DMA masks
- */
- #define AMBA_AHB_DEVICE(name, busid, id, base, irqs, data) \
- struct amba_device name##_device = { \
- .dev = __AMBA_DEV(busid, data, ~0ULL), \
- .res = DEFINE_RES_MEM(base, SZ_4K), \
- .dma_mask = ~0ULL, \
- .irq = irqs, \
- .periphid = id, \
- }
- /*
- * module_amba_driver() - Helper macro for drivers that don't do anything
- * special in module init/exit. This eliminates a lot of boilerplate. Each
- * module may only use this macro once, and calling it replaces module_init()
- * and module_exit()
- */
- #define module_amba_driver(__amba_drv) \
- module_driver(__amba_drv, amba_driver_register, amba_driver_unregister)
- #endif