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.
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.
11 * Copyright (C) 2012 ARM Limited
14 #ifndef _LINUX_VEXPRESS_H
15 #define _LINUX_VEXPRESS_H
17 #include <linux/device.h>
18 #include <linux/reboot.h>
20 #define VEXPRESS_SITE_MB 0
21 #define VEXPRESS_SITE_DB1 1
22 #define VEXPRESS_SITE_DB2 2
23 #define VEXPRESS_SITE_MASTER 0xf
25 #define VEXPRESS_CONFIG_STATUS_DONE 0
26 #define VEXPRESS_CONFIG_STATUS_WAIT 1
28 #define VEXPRESS_GPIO_MMC_CARDIN 0
29 #define VEXPRESS_GPIO_MMC_WPROT 1
30 #define VEXPRESS_GPIO_FLASH_WPn 2
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
40 #define VEXPRESS_RES_FUNC(_site, _func) \
44 .flags = IORESOURCE_BUS, \
47 /* Config bridge API */
50 * struct vexpress_config_bridge_info - description of the platform
51 * configuration infrastructure bridge.
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.
60 * @func_put: Tells the bridge that the function will not be used any
61 * more, so all allocated resources can be released.
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
70 struct vexpress_config_bridge_info {
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);
77 struct vexpress_config_bridge;
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);
84 void vexpress_config_complete(struct vexpress_config_bridge *bridge,
87 /* Config function API */
89 struct vexpress_config_func;
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);
100 int vexpress_config_read(struct vexpress_config_func *func, int offset,
102 int vexpress_config_write(struct vexpress_config_func *func, int offset,
105 /* Platform control */
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);
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);
116 void vexpress_sysreg_early_init(void __iomem *base);
117 void vexpress_sysreg_of_early_init(void);
121 struct clk *vexpress_osc_setup(struct device *dev);
122 void vexpress_osc_of_setup(struct device_node *node);
124 void vexpress_clk_init(void __iomem *sp810_base);
125 void vexpress_clk_of_init(void);