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3ecbf05b PM |
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> | |
7b6d864b | 18 | #include <linux/reboot.h> |
3ecbf05b PM |
19 | |
20 | #define VEXPRESS_SITE_MB 0 | |
21 | #define VEXPRESS_SITE_DB1 1 | |
22 | #define VEXPRESS_SITE_DB2 2 | |
23 | #define VEXPRESS_SITE_MASTER 0xf | |
24 | ||
25 | #define VEXPRESS_CONFIG_STATUS_DONE 0 | |
26 | #define VEXPRESS_CONFIG_STATUS_WAIT 1 | |
27 | ||
88e0abcd PM |
28 | #define VEXPRESS_GPIO_MMC_CARDIN 0 |
29 | #define VEXPRESS_GPIO_MMC_WPROT 1 | |
30 | #define VEXPRESS_GPIO_FLASH_WPn 2 | |
8ea402f5 PM |
31 | #define VEXPRESS_GPIO_LED0 3 |
32 | #define VEXPRESS_GPIO_LED1 4 | |
33 | #define VEXPRESS_GPIO_LED2 5 | |
34 | #define VEXPRESS_GPIO_LED3 6 | |
35 | #define VEXPRESS_GPIO_LED4 7 | |
36 | #define VEXPRESS_GPIO_LED5 8 | |
37 | #define VEXPRESS_GPIO_LED6 9 | |
38 | #define VEXPRESS_GPIO_LED7 10 | |
88e0abcd PM |
39 | |
40 | #define VEXPRESS_RES_FUNC(_site, _func) \ | |
41 | { \ | |
42 | .start = (_site), \ | |
43 | .end = (_func), \ | |
44 | .flags = IORESOURCE_BUS, \ | |
45 | } | |
46 | ||
3ecbf05b PM |
47 | /* Config bridge API */ |
48 | ||
49 | /** | |
50 | * struct vexpress_config_bridge_info - description of the platform | |
51 | * configuration infrastructure bridge. | |
52 | * | |
53 | * @name: Bridge name | |
54 | * | |
55 | * @func_get: Obtains pointer to a configuration function for a given | |
56 | * device or a Device Tree node, to be used with @func_put | |
57 | * and @func_exec. The node pointer should take precedence | |
58 | * over device pointer when both are passed. | |
59 | * | |
60 | * @func_put: Tells the bridge that the function will not be used any | |
61 | * more, so all allocated resources can be released. | |
62 | * | |
63 | * @func_exec: Executes a configuration function read or write operation. | |
64 | * The offset selects a 32 bit word of the value accessed. | |
65 | * Must return VEXPRESS_CONFIG_STATUS_DONE when operation | |
66 | * is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when | |
67 | * will be completed in some time or negative value in case | |
68 | * of error. | |
69 | */ | |
70 | struct vexpress_config_bridge_info { | |
71 | const char *name; | |
72 | void *(*func_get)(struct device *dev, struct device_node *node); | |
73 | void (*func_put)(void *func); | |
74 | int (*func_exec)(void *func, int offset, bool write, u32 *data); | |
75 | }; | |
76 | ||
77 | struct vexpress_config_bridge; | |
78 | ||
79 | struct vexpress_config_bridge *vexpress_config_bridge_register( | |
80 | struct device_node *node, | |
81 | struct vexpress_config_bridge_info *info); | |
82 | void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge); | |
83 | ||
84 | void vexpress_config_complete(struct vexpress_config_bridge *bridge, | |
85 | int status); | |
86 | ||
87 | /* Config function API */ | |
88 | ||
89 | struct vexpress_config_func; | |
90 | ||
91 | struct vexpress_config_func *__vexpress_config_func_get(struct device *dev, | |
92 | struct device_node *node); | |
93 | #define vexpress_config_func_get_by_dev(dev) \ | |
94 | __vexpress_config_func_get(dev, NULL) | |
95 | #define vexpress_config_func_get_by_node(node) \ | |
96 | __vexpress_config_func_get(NULL, node) | |
97 | void vexpress_config_func_put(struct vexpress_config_func *func); | |
98 | ||
99 | /* Both may sleep! */ | |
100 | int vexpress_config_read(struct vexpress_config_func *func, int offset, | |
101 | u32 *data); | |
102 | int vexpress_config_write(struct vexpress_config_func *func, int offset, | |
103 | u32 data); | |
104 | ||
88e0abcd PM |
105 | /* Platform control */ |
106 | ||
107 | u32 vexpress_get_procid(int site); | |
108 | u32 vexpress_get_hbi(int site); | |
109 | void *vexpress_get_24mhz_clock_base(void); | |
110 | void vexpress_flags_set(u32 data); | |
111 | ||
112 | #define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node) | |
113 | #define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL) | |
114 | unsigned __vexpress_get_site(struct device *dev, struct device_node *node); | |
115 | ||
116 | void vexpress_sysreg_early_init(void __iomem *base); | |
117 | void vexpress_sysreg_of_early_init(void); | |
118 | ||
38669e04 PM |
119 | /* Clocks */ |
120 | ||
121 | struct clk *vexpress_osc_setup(struct device *dev); | |
122 | void vexpress_osc_of_setup(struct device_node *node); | |
123 | ||
124 | void vexpress_clk_init(void __iomem *sp810_base); | |
125 | void vexpress_clk_of_init(void); | |
126 | ||
3ecbf05b | 127 | #endif |