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Commit | Line | Data |
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1da177e4 | 1 | /* |
4e10ae11 LW |
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. | |
1da177e4 LT |
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 | ||
7cfe2494 | 17 | #include <linux/clk.h> |
c36207a4 | 18 | #include <linux/device.h> |
7cfe2494 | 19 | #include <linux/err.h> |
c36207a4 | 20 | #include <linux/resource.h> |
65500fa9 | 21 | #include <linux/regulator/consumer.h> |
c36207a4 | 22 | |
1da177e4 | 23 | #define AMBA_NR_IRQS 2 |
01723a95 | 24 | #define AMBA_CID 0xb105f00d |
1da177e4 | 25 | |
7cfe2494 RK |
26 | struct clk; |
27 | ||
1da177e4 LT |
28 | struct amba_device { |
29 | struct device dev; | |
30 | struct resource res; | |
7cfe2494 | 31 | struct clk *pclk; |
65500fa9 | 32 | struct regulator *vcore; |
1da177e4 LT |
33 | u64 dma_mask; |
34 | unsigned int periphid; | |
35 | unsigned int irq[AMBA_NR_IRQS]; | |
36 | }; | |
37 | ||
38 | struct amba_id { | |
39 | unsigned int id; | |
40 | unsigned int mask; | |
41 | void *data; | |
42 | }; | |
43 | ||
44 | struct amba_driver { | |
45 | struct device_driver drv; | |
aa25afad | 46 | int (*probe)(struct amba_device *, const struct amba_id *); |
1da177e4 LT |
47 | int (*remove)(struct amba_device *); |
48 | void (*shutdown)(struct amba_device *); | |
49 | int (*suspend)(struct amba_device *, pm_message_t); | |
50 | int (*resume)(struct amba_device *); | |
2d00880f | 51 | const struct amba_id *id_table; |
1da177e4 LT |
52 | }; |
53 | ||
f17a1f06 LW |
54 | enum amba_vendor { |
55 | AMBA_VENDOR_ARM = 0x41, | |
56 | AMBA_VENDOR_ST = 0x80, | |
57 | }; | |
58 | ||
394d5aef RH |
59 | extern struct bus_type amba_bustype; |
60 | ||
ba74ec7f RV |
61 | #define to_amba_device(d) container_of(d, struct amba_device, dev) |
62 | ||
1da177e4 LT |
63 | #define amba_get_drvdata(d) dev_get_drvdata(&d->dev) |
64 | #define amba_set_drvdata(d,p) dev_set_drvdata(&d->dev, p) | |
65 | ||
66 | int amba_driver_register(struct amba_driver *); | |
67 | void amba_driver_unregister(struct amba_driver *); | |
68 | int amba_device_register(struct amba_device *, struct resource *); | |
69 | void amba_device_unregister(struct amba_device *); | |
70 | struct amba_device *amba_find_device(const char *, struct device *, unsigned int, unsigned int); | |
71 | int amba_request_regions(struct amba_device *, const char *); | |
72 | void amba_release_regions(struct amba_device *); | |
73 | ||
7cfe2494 RK |
74 | #define amba_pclk_enable(d) \ |
75 | (IS_ERR((d)->pclk) ? 0 : clk_enable((d)->pclk)) | |
76 | ||
77 | #define amba_pclk_disable(d) \ | |
78 | do { if (!IS_ERR((d)->pclk)) clk_disable((d)->pclk); } while (0) | |
79 | ||
65500fa9 LW |
80 | #define amba_vcore_enable(d) \ |
81 | (IS_ERR((d)->vcore) ? 0 : regulator_enable((d)->vcore)) | |
82 | ||
83 | #define amba_vcore_disable(d) \ | |
84 | do { if (!IS_ERR((d)->vcore)) regulator_disable((d)->vcore); } while (0) | |
85 | ||
01723a95 LW |
86 | /* Some drivers don't use the struct amba_device */ |
87 | #define AMBA_CONFIG_BITS(a) (((a) >> 24) & 0xff) | |
88 | #define AMBA_REV_BITS(a) (((a) >> 20) & 0x0f) | |
89 | #define AMBA_MANF_BITS(a) (((a) >> 12) & 0xff) | |
90 | #define AMBA_PART_BITS(a) ((a) & 0xfff) | |
91 | ||
92 | #define amba_config(d) AMBA_CONFIG_BITS((d)->periphid) | |
93 | #define amba_rev(d) AMBA_REV_BITS((d)->periphid) | |
94 | #define amba_manf(d) AMBA_MANF_BITS((d)->periphid) | |
95 | #define amba_part(d) AMBA_PART_BITS((d)->periphid) | |
1da177e4 LT |
96 | |
97 | #endif |