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
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
39 #define VEXPRESS_RES_FUNC(_site, _func) \
43 .flags = IORESOURCE_BUS, \
46 /* Config bridge API */
49 * struct vexpress_config_bridge_info - description of the platform
50 * configuration infrastructure bridge.
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.
59 * @func_put: Tells the bridge that the function will not be used any
60 * more, so all allocated resources can be released.
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
69 struct vexpress_config_bridge_info {
71 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(
92 struct vexpress_config_bridge *bridge,
94 struct device_node *node,
96 #define vexpress_config_func_get(bridge, id) \
97 __vexpress_config_func_get(bridge, NULL, NULL, id)
98 #define vexpress_config_func_get_by_dev(dev) \
99 __vexpress_config_func_get(NULL, dev, NULL, NULL)
100 #define vexpress_config_func_get_by_node(node) \
101 __vexpress_config_func_get(NULL, NULL, node, NULL)
102 void vexpress_config_func_put(struct vexpress_config_func *func);
104 /* Both may sleep! */
105 int vexpress_config_read(struct vexpress_config_func *func, int offset,
107 int vexpress_config_write(struct vexpress_config_func *func, int offset,
110 /* Platform control */
112 u32 vexpress_get_procid(int site);
113 u32 vexpress_get_hbi(int site);
114 void *vexpress_get_24mhz_clock_base(void);
115 void vexpress_flags_set(u32 data);
117 #define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
118 #define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
119 unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
121 void vexpress_sysreg_early_init(void __iomem *base);
122 void vexpress_sysreg_of_early_init(void);
126 struct clk *vexpress_osc_setup(struct device *dev);
127 void vexpress_osc_of_setup(struct device_node *node);
129 struct clk *vexpress_clk_register_spc(const char *name, int cluster_id);
130 void vexpress_clk_of_register_spc(void);
132 void vexpress_clk_init(void __iomem *sp810_base);
133 void vexpress_clk_of_init(void);
137 #define VEXPRESS_SPC_WAKE_INTR_IRQ(cluster, cpu) \
138 (1 << (4 * (cluster) + (cpu)))
139 #define VEXPRESS_SPC_WAKE_INTR_FIQ(cluster, cpu) \
140 (1 << (7 * (cluster) + (cpu)))
141 #define VEXPRESS_SPC_WAKE_INTR_SWDOG (1 << 10)
142 #define VEXPRESS_SPC_WAKE_INTR_GTIMER (1 << 11)
143 #define VEXPRESS_SPC_WAKE_INTR_MASK 0xFFF
145 #ifdef CONFIG_VEXPRESS_SPC
146 extern bool vexpress_spc_check_loaded(void);
147 extern void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster, bool set);
148 extern void vexpress_spc_set_global_wakeup_intr(bool set);
149 extern int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr);
150 extern int vexpress_spc_get_performance(u32 cluster, u32 *freq);
151 extern int vexpress_spc_set_performance(u32 cluster, u32 freq);
152 extern void vexpress_spc_write_resume_reg(u32 cluster, u32 cpu, u32 addr);
153 extern int vexpress_spc_get_nb_cpus(u32 cluster);
154 extern void vexpress_spc_powerdown_enable(u32 cluster, bool enable);
156 static inline bool vexpress_spc_check_loaded(void) { return false; }
157 static inline void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster,
159 static inline void vexpress_spc_set_global_wakeup_intr(bool set) { }
160 static inline int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr)
164 static inline int vexpress_spc_get_performance(u32 cluster, u32 *freq)
168 static inline int vexpress_spc_set_performance(u32 cluster, u32 freq)
172 static inline void vexpress_spc_write_resume_reg(u32 cluster,
173 u32 cpu, u32 addr) { }
174 static inline int vexpress_spc_get_nb_cpus(u32 cluster) { return -ENODEV; }
175 static inline void vexpress_spc_powerdown_enable(u32 cluster, bool enable) { }