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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 | |
27 | #define VEXPRESS_GPIO_MMC_CARDIN 0 |
28 | #define VEXPRESS_GPIO_MMC_WPROT 1 |
29 | #define VEXPRESS_GPIO_FLASH_WPn 2 |
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 |
38 | |
39 | #define VEXPRESS_RES_FUNC(_site, _func) \ |
40 | { \ |
41 | .start = (_site), \ |
42 | .end = (_func), \ |
43 | .flags = IORESOURCE_BUS, \ |
44 | } |
45 | |
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 | |
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 | |
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 | |
129 | #endif |
130 |
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