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1 | /* |
2 | * This program is free software; you can redistribute it and/or modify | |
3 | * it under the terms of the GNU General Public License version 2 as | |
4 | * published by the Free Software Foundation. | |
5 | * | |
6 | * This program is distributed in the hope that it will be useful, | |
7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
9 | * GNU General Public License for more details. | |
10 | * | |
11 | * Copyright (C) 2012 ARM Limited | |
12 | */ | |
13 | ||
14 | #ifndef _LINUX_VEXPRESS_H | |
15 | #define _LINUX_VEXPRESS_H | |
16 | ||
17 | #include <linux/device.h> | |
18 | ||
19 | #define VEXPRESS_SITE_MB 0 | |
20 | #define VEXPRESS_SITE_DB1 1 | |
21 | #define VEXPRESS_SITE_DB2 2 | |
22 | #define VEXPRESS_SITE_MASTER 0xf | |
23 | ||
24 | #define VEXPRESS_CONFIG_STATUS_DONE 0 | |
25 | #define VEXPRESS_CONFIG_STATUS_WAIT 1 | |
26 | ||
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27 | #define VEXPRESS_GPIO_MMC_CARDIN 0 |
28 | #define VEXPRESS_GPIO_MMC_WPROT 1 | |
29 | #define VEXPRESS_GPIO_FLASH_WPn 2 | |
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30 | #define VEXPRESS_GPIO_LED0 3 |
31 | #define VEXPRESS_GPIO_LED1 4 | |
32 | #define VEXPRESS_GPIO_LED2 5 | |
33 | #define VEXPRESS_GPIO_LED3 6 | |
34 | #define VEXPRESS_GPIO_LED4 7 | |
35 | #define VEXPRESS_GPIO_LED5 8 | |
36 | #define VEXPRESS_GPIO_LED6 9 | |
37 | #define VEXPRESS_GPIO_LED7 10 | |
88e0abcd PM |
38 | |
39 | #define VEXPRESS_RES_FUNC(_site, _func) \ | |
40 | { \ | |
41 | .start = (_site), \ | |
42 | .end = (_func), \ | |
43 | .flags = IORESOURCE_BUS, \ | |
44 | } | |
45 | ||
3ecbf05b PM |
46 | /* Config bridge API */ |
47 | ||
48 | /** | |
49 | * struct vexpress_config_bridge_info - description of the platform | |
50 | * configuration infrastructure bridge. | |
51 | * | |
52 | * @name: Bridge name | |
53 | * | |
54 | * @func_get: Obtains pointer to a configuration function for a given | |
55 | * device or a Device Tree node, to be used with @func_put | |
56 | * and @func_exec. The node pointer should take precedence | |
57 | * over device pointer when both are passed. | |
58 | * | |
59 | * @func_put: Tells the bridge that the function will not be used any | |
60 | * more, so all allocated resources can be released. | |
61 | * | |
62 | * @func_exec: Executes a configuration function read or write operation. | |
63 | * The offset selects a 32 bit word of the value accessed. | |
64 | * Must return VEXPRESS_CONFIG_STATUS_DONE when operation | |
65 | * is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when | |
66 | * will be completed in some time or negative value in case | |
67 | * of error. | |
68 | */ | |
69 | struct vexpress_config_bridge_info { | |
70 | const char *name; | |
71 | void *(*func_get)(struct device *dev, struct device_node *node); | |
72 | void (*func_put)(void *func); | |
73 | int (*func_exec)(void *func, int offset, bool write, u32 *data); | |
74 | }; | |
75 | ||
76 | struct vexpress_config_bridge; | |
77 | ||
78 | struct vexpress_config_bridge *vexpress_config_bridge_register( | |
79 | struct device_node *node, | |
80 | struct vexpress_config_bridge_info *info); | |
81 | void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge); | |
82 | ||
83 | void vexpress_config_complete(struct vexpress_config_bridge *bridge, | |
84 | int status); | |
85 | ||
86 | /* Config function API */ | |
87 | ||
88 | struct vexpress_config_func; | |
89 | ||
90 | struct vexpress_config_func *__vexpress_config_func_get(struct device *dev, | |
91 | struct device_node *node); | |
92 | #define vexpress_config_func_get_by_dev(dev) \ | |
93 | __vexpress_config_func_get(dev, NULL) | |
94 | #define vexpress_config_func_get_by_node(node) \ | |
95 | __vexpress_config_func_get(NULL, node) | |
96 | void vexpress_config_func_put(struct vexpress_config_func *func); | |
97 | ||
98 | /* Both may sleep! */ | |
99 | int vexpress_config_read(struct vexpress_config_func *func, int offset, | |
100 | u32 *data); | |
101 | int vexpress_config_write(struct vexpress_config_func *func, int offset, | |
102 | u32 data); | |
103 | ||
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104 | /* Platform control */ |
105 | ||
106 | u32 vexpress_get_procid(int site); | |
107 | u32 vexpress_get_hbi(int site); | |
108 | void *vexpress_get_24mhz_clock_base(void); | |
109 | void vexpress_flags_set(u32 data); | |
110 | ||
111 | #define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node) | |
112 | #define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL) | |
113 | unsigned __vexpress_get_site(struct device *dev, struct device_node *node); | |
114 | ||
115 | void vexpress_sysreg_early_init(void __iomem *base); | |
116 | void vexpress_sysreg_of_early_init(void); | |
117 | ||
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118 | void vexpress_power_off(void); |
119 | void vexpress_restart(char str, const char *cmd); | |
120 | ||
121 | /* Clocks */ | |
122 | ||
123 | struct clk *vexpress_osc_setup(struct device *dev); | |
124 | void vexpress_osc_of_setup(struct device_node *node); | |
125 | ||
126 | void vexpress_clk_init(void __iomem *sp810_base); | |
127 | void vexpress_clk_of_init(void); | |
128 | ||
3ecbf05b | 129 | #endif |