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>
19 #define VEXPRESS_SITE_MB 0
20 #define VEXPRESS_SITE_DB1 1
21 #define VEXPRESS_SITE_DB2 2
22 #define VEXPRESS_SITE_MASTER 0xf
24 #define VEXPRESS_CONFIG_STATUS_DONE 0
25 #define VEXPRESS_CONFIG_STATUS_WAIT 1
27 #define VEXPRESS_GPIO_MMC_CARDIN 0
28 #define VEXPRESS_GPIO_MMC_WPROT 1
29 #define VEXPRESS_GPIO_FLASH_WPn 2
31 #define VEXPRESS_RES_FUNC(_site, _func) \
35 .flags = IORESOURCE_BUS, \
38 /* Config bridge API */
41 * struct vexpress_config_bridge_info - description of the platform
42 * configuration infrastructure bridge.
46 * @func_get: Obtains pointer to a configuration function for a given
47 * device or a Device Tree node, to be used with @func_put
48 * and @func_exec. The node pointer should take precedence
49 * over device pointer when both are passed.
51 * @func_put: Tells the bridge that the function will not be used any
52 * more, so all allocated resources can be released.
54 * @func_exec: Executes a configuration function read or write operation.
55 * The offset selects a 32 bit word of the value accessed.
56 * Must return VEXPRESS_CONFIG_STATUS_DONE when operation
57 * is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when
58 * will be completed in some time or negative value in case
61 struct vexpress_config_bridge_info {
63 void *(*func_get)(struct device *dev, struct device_node *node);
64 void (*func_put)(void *func);
65 int (*func_exec)(void *func, int offset, bool write, u32 *data);
68 struct vexpress_config_bridge;
70 struct vexpress_config_bridge *vexpress_config_bridge_register(
71 struct device_node *node,
72 struct vexpress_config_bridge_info *info);
73 void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge);
75 void vexpress_config_complete(struct vexpress_config_bridge *bridge,
78 /* Config function API */
80 struct vexpress_config_func;
82 struct vexpress_config_func *__vexpress_config_func_get(struct device *dev,
83 struct device_node *node);
84 #define vexpress_config_func_get_by_dev(dev) \
85 __vexpress_config_func_get(dev, NULL)
86 #define vexpress_config_func_get_by_node(node) \
87 __vexpress_config_func_get(NULL, node)
88 void vexpress_config_func_put(struct vexpress_config_func *func);
91 int vexpress_config_read(struct vexpress_config_func *func, int offset,
93 int vexpress_config_write(struct vexpress_config_func *func, int offset,
96 /* Platform control */
98 u32 vexpress_get_procid(int site);
99 u32 vexpress_get_hbi(int site);
100 void *vexpress_get_24mhz_clock_base(void);
101 void vexpress_flags_set(u32 data);
103 #define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
104 #define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
105 unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
107 void vexpress_sysreg_early_init(void __iomem *base);
108 void vexpress_sysreg_of_early_init(void);
110 void vexpress_power_off(void);
111 void vexpress_restart(char str, const char *cmd);
115 struct clk *vexpress_osc_setup(struct device *dev);
116 void vexpress_osc_of_setup(struct device_node *node);
118 void vexpress_clk_init(void __iomem *sp810_base);
119 void vexpress_clk_of_init(void);