]> Pileus Git - ~andy/linux/blob - include/linux/mfd/kempld.h
Merge tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
[~andy/linux] / include / linux / mfd / kempld.h
1 /*
2  * Kontron PLD driver definitions
3  *
4  * Copyright (c) 2010-2012 Kontron Europe GmbH
5  * Author: Michael Brunner <michael.brunner@kontron.com>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License 2 as published
9  * by the Free Software Foundation.
10  */
11
12 #ifndef _LINUX_MFD_KEMPLD_H_
13 #define _LINUX_MFD_KEMPLD_H_
14
15 /* kempld register definitions */
16 #define KEMPLD_IOINDEX                  0xa80
17 #define KEMPLD_IODATA                   0xa81
18 #define KEMPLD_MUTEX_KEY                0x80
19 #define KEMPLD_VERSION                  0x00
20 #define KEMPLD_VERSION_LSB              0x00
21 #define KEMPLD_VERSION_MSB              0x01
22 #define KEMPLD_VERSION_GET_MINOR(x)     (x & 0x1f)
23 #define KEMPLD_VERSION_GET_MAJOR(x)     ((x >> 5) & 0x1f)
24 #define KEMPLD_VERSION_GET_NUMBER(x)    ((x >> 10) & 0xf)
25 #define KEMPLD_VERSION_GET_TYPE(x)      ((x >> 14) & 0x3)
26 #define KEMPLD_BUILDNR                  0x02
27 #define KEMPLD_BUILDNR_LSB              0x02
28 #define KEMPLD_BUILDNR_MSB              0x03
29 #define KEMPLD_FEATURE                  0x04
30 #define KEMPLD_FEATURE_LSB              0x04
31 #define KEMPLD_FEATURE_MSB              0x05
32 #define KEMPLD_FEATURE_BIT_I2C          (1 << 0)
33 #define KEMPLD_FEATURE_BIT_WATCHDOG     (1 << 1)
34 #define KEMPLD_FEATURE_BIT_GPIO         (1 << 2)
35 #define KEMPLD_FEATURE_MASK_UART        (7 << 3)
36 #define KEMPLD_FEATURE_BIT_NMI          (1 << 8)
37 #define KEMPLD_FEATURE_BIT_SMI          (1 << 9)
38 #define KEMPLD_FEATURE_BIT_SCI          (1 << 10)
39 #define KEMPLD_SPEC                     0x06
40 #define KEMPLD_SPEC_GET_MINOR(x)        (x & 0x0f)
41 #define KEMPLD_SPEC_GET_MAJOR(x)        ((x >> 4) & 0x0f)
42 #define KEMPLD_IRQ_GPIO                 0x35
43 #define KEMPLD_IRQ_I2C                  0x36
44 #define KEMPLD_CFG                      0x37
45 #define KEMPLD_CFG_GPIO_I2C_MUX         (1 << 0)
46 #define KEMPLD_CFG_BIOS_WP              (1 << 7)
47
48 #define KEMPLD_CLK                      33333333
49
50 #define KEMPLD_TYPE_RELEASE             0x0
51 #define KEMPLD_TYPE_DEBUG               0x1
52 #define KEMPLD_TYPE_CUSTOM              0x2
53
54 /**
55  * struct kempld_info - PLD device information structure
56  * @major:      PLD major revision
57  * @minor:      PLD minor revision
58  * @buildnr:    PLD build number
59  * @number:     PLD board specific index
60  * @type:       PLD type
61  * @spec_major: PLD FW specification major revision
62  * @spec_minor: PLD FW specification minor revision
63  */
64 struct kempld_info {
65         unsigned int major;
66         unsigned int minor;
67         unsigned int buildnr;
68         unsigned int number;
69         unsigned int type;
70         unsigned int spec_major;
71         unsigned int spec_minor;
72 };
73
74 /**
75  * struct kempld_device_data - Internal representation of the PLD device
76  * @io_base:            Pointer to the IO memory
77  * @io_index:           Pointer to the IO index register
78  * @io_data:            Pointer to the IO data register
79  * @pld_clock:          PLD clock frequency
80  * @feature_mask:       PLD feature mask
81  * @dev:                Pointer to kernel device structure
82  * @info:               KEMPLD info structure
83  * @lock:               PLD mutex
84  */
85 struct kempld_device_data {
86         void __iomem            *io_base;
87         void __iomem            *io_index;
88         void __iomem            *io_data;
89         u32                     pld_clock;
90         u32                     feature_mask;
91         struct device           *dev;
92         struct kempld_info      info;
93         struct mutex            lock;
94 };
95
96 /**
97  * struct kempld_platform_data - PLD hardware configuration structure
98  * @pld_clock:                  PLD clock frequency
99  * @gpio_base                   GPIO base pin number
100  * @ioresource:                 IO addresses of the PLD
101  * @get_mutex:                  PLD specific get_mutex callback
102  * @release_mutex:              PLD specific release_mutex callback
103  * @get_info:                   PLD specific get_info callback
104  * @register_cells:             PLD specific register_cells callback
105  */
106 struct kempld_platform_data {
107         u32                             pld_clock;
108         int                             gpio_base;
109         struct resource                 *ioresource;
110         void (*get_hardware_mutex)      (struct kempld_device_data *);
111         void (*release_hardware_mutex)  (struct kempld_device_data *);
112         int (*get_info)                 (struct kempld_device_data *);
113         int (*register_cells)           (struct kempld_device_data *);
114 };
115
116 extern void kempld_get_mutex(struct kempld_device_data *pld);
117 extern void kempld_release_mutex(struct kempld_device_data *pld);
118 extern u8 kempld_read8(struct kempld_device_data *pld, u8 index);
119 extern void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data);
120 extern u16 kempld_read16(struct kempld_device_data *pld, u8 index);
121 extern void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data);
122 extern u32 kempld_read32(struct kempld_device_data *pld, u8 index);
123 extern void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data);
124
125 #endif /* _LINUX_MFD_KEMPLD_H_ */