1 /* 2 * linux/include/amba/bus.h 3 * 4 * This device type deals with ARM PrimeCells and anything else that 5 * presents a proper CID (0xB105F00D) at the end of the I/O register 6 * region or that is derived from a PrimeCell. 7 * 8 * Copyright (C) 2003 Deep Blue Solutions Ltd, All Rights Reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 #ifndef ASMARM_AMBA_H 15 #define ASMARM_AMBA_H 16 17 #include <linux/device.h> 18 #include <linux/resource.h> 19 20 #define AMBA_NR_IRQS 2 21 22 struct amba_device { 23 struct device dev; 24 struct resource res; 25 u64 dma_mask; 26 unsigned int periphid; 27 unsigned int irq[AMBA_NR_IRQS]; 28 }; 29 30 struct amba_id { 31 unsigned int id; 32 unsigned int mask; 33 void *data; 34 }; 35 36 struct amba_driver { 37 struct device_driver drv; 38 int (*probe)(struct amba_device *, struct amba_id *); 39 int (*remove)(struct amba_device *); 40 void (*shutdown)(struct amba_device *); 41 int (*suspend)(struct amba_device *, pm_message_t); 42 int (*resume)(struct amba_device *); 43 struct amba_id *id_table; 44 }; 45 46 enum amba_vendor { 47 AMBA_VENDOR_ARM = 0x41, 48 AMBA_VENDOR_ST = 0x80, 49 }; 50 51 #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) 52 #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) 53 54 int amba_driver_register(struct amba_driver *); 55 void amba_driver_unregister(struct amba_driver *); 56 int amba_device_register(struct amba_device *, struct resource *); 57 void amba_device_unregister(struct amba_device *); 58 struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int); 59 int amba_request_regions(struct amba_device *, const char *); 60 void amba_release_regions(struct amba_device *); 61 62 #define amba_config(d) (((d)->periphid >> 24) & 0xff) 63 #define amba_rev(d) (((d)->periphid >> 20) & 0x0f) 64 #define amba_manf(d) (((d)->periphid >> 12) & 0xff) 65 #define amba_part(d) ((d)->periphid & 0xfff) 66 67 #endif 68