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/clk.h> 18 #include <linux/device.h> 19 #include <linux/err.h> 20 #include <linux/resource.h> 21 22 #define AMBA_NR_IRQS 2 23 24 struct clk; 25 26 struct amba_device { 27 struct device dev; 28 struct resource res; 29 struct clk *pclk; 30 u64 dma_mask; 31 unsigned int periphid; 32 unsigned int irq[AMBA_NR_IRQS]; 33 }; 34 35 struct amba_id { 36 unsigned int id; 37 unsigned int mask; 38 void *data; 39 }; 40 41 struct amba_driver { 42 struct device_driver drv; 43 int (*probe)(struct amba_device *, struct amba_id *); 44 int (*remove)(struct amba_device *); 45 void (*shutdown)(struct amba_device *); 46 int (*suspend)(struct amba_device *, pm_message_t); 47 int (*resume)(struct amba_device *); 48 struct amba_id *id_table; 49 }; 50 51 enum amba_vendor { 52 AMBA_VENDOR_ARM = 0x41, 53 AMBA_VENDOR_ST = 0x80, 54 }; 55 56 #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) 57 #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) 58 59 int amba_driver_register(struct amba_driver *); 60 void amba_driver_unregister(struct amba_driver *); 61 int amba_device_register(struct amba_device *, struct resource *); 62 void amba_device_unregister(struct amba_device *); 63 struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int); 64 int amba_request_regions(struct amba_device *, const char *); 65 void amba_release_regions(struct amba_device *); 66 67 #define amba_pclk_enable(d) \ 68 (IS_ERR((d)->pclk) ? 0 : clk_enable((d)->pclk)) 69 70 #define amba_pclk_disable(d) \ 71 do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0) 72 73 #define amba_config(d) (((d)->periphid >> 24) & 0xff) 74 #define amba_rev(d) (((d)->periphid >> 20) & 0x0f) 75 #define amba_manf(d) (((d)->periphid >> 12) & 0xff) 76 #define amba_part(d) ((d)->periphid & 0xfff) 77 78 #endif 79