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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Copyright (C) 2012 ARM Limited
*/
#ifndef _LINUX_VEXPRESS_H
#define _LINUX_VEXPRESS_H
#include <linux/device.h>
#define VEXPRESS_SITE_MB 0
#define VEXPRESS_SITE_DB1 1
#define VEXPRESS_SITE_DB2 2
#define VEXPRESS_SITE_MASTER 0xf
#define VEXPRESS_CONFIG_STATUS_DONE 0
#define VEXPRESS_CONFIG_STATUS_WAIT 1
#define VEXPRESS_GPIO_MMC_CARDIN 0
#define VEXPRESS_GPIO_MMC_WPROT 1
#define VEXPRESS_GPIO_FLASH_WPn 2
#define VEXPRESS_GPIO_LED0 3
#define VEXPRESS_GPIO_LED1 4
#define VEXPRESS_GPIO_LED2 5
#define VEXPRESS_GPIO_LED3 6
#define VEXPRESS_GPIO_LED4 7
#define VEXPRESS_GPIO_LED5 8
#define VEXPRESS_GPIO_LED6 9
#define VEXPRESS_GPIO_LED7 10
#define VEXPRESS_RES_FUNC(_site, _func) \
{ \
.start = (_site), \
.end = (_func), \
.flags = IORESOURCE_BUS, \
}
/* Config bridge API */
/**
* struct vexpress_config_bridge_info - description of the platform
* configuration infrastructure bridge.
*
* @name: Bridge name
*
* @func_get: Obtains pointer to a configuration function for a given
* device or a Device Tree node, to be used with @func_put
* and @func_exec. The node pointer should take precedence
* over device pointer when both are passed.
*
* @func_put: Tells the bridge that the function will not be used any
* more, so all allocated resources can be released.
*
* @func_exec: Executes a configuration function read or write operation.
* The offset selects a 32 bit word of the value accessed.
* Must return VEXPRESS_CONFIG_STATUS_DONE when operation
* is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when
* will be completed in some time or negative value in case
* of error.
*/
struct vexpress_config_bridge_info {
const char *name;
void *(*func_get)(struct device *dev, struct device_node *node,
const char *id);
void (*func_put)(void *func);
int (*func_exec)(void *func, int offset, bool write, u32 *data);
};
struct vexpress_config_bridge;
struct vexpress_config_bridge *vexpress_config_bridge_register(
struct device_node *node,
struct vexpress_config_bridge_info *info);
void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge);
void vexpress_config_complete(struct vexpress_config_bridge *bridge,
int status);
/* Config function API */
struct vexpress_config_func;
struct vexpress_config_func *__vexpress_config_func_get(
struct vexpress_config_bridge *bridge,
struct device *dev,
struct device_node *node,
const char *id);
#define vexpress_config_func_get(bridge, id) \
__vexpress_config_func_get(bridge, NULL, NULL, id)
#define vexpress_config_func_get_by_dev(dev) \
__vexpress_config_func_get(NULL, dev, NULL, NULL)
#define vexpress_config_func_get_by_node(node) \
__vexpress_config_func_get(NULL, NULL, node, NULL)
void vexpress_config_func_put(struct vexpress_config_func *func);
/* Both may sleep! */
int vexpress_config_read(struct vexpress_config_func *func, int offset,
u32 *data);
int vexpress_config_write(struct vexpress_config_func *func, int offset,
u32 data);
/* Platform control */
u32 vexpress_get_procid(int site);
u32 vexpress_get_hbi(int site);
void *vexpress_get_24mhz_clock_base(void);
void vexpress_flags_set(u32 data);
#define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
#define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
void vexpress_sysreg_early_init(void __iomem *base);
void vexpress_sysreg_of_early_init(void);
/* Clocks */
struct clk *vexpress_osc_setup(struct device *dev);
void vexpress_osc_of_setup(struct device_node *node);
void vexpress_clk_init(void __iomem *sp810_base);
void vexpress_clk_of_init(void);
/* SPC */
#define VEXPRESS_SPC_WAKE_INTR_IRQ(cluster, cpu) \
(1 << (4 * (cluster) + (cpu)))
#define VEXPRESS_SPC_WAKE_INTR_FIQ(cluster, cpu) \
(1 << (7 * (cluster) + (cpu)))
#define VEXPRESS_SPC_WAKE_INTR_SWDOG (1 << 10)
#define VEXPRESS_SPC_WAKE_INTR_GTIMER (1 << 11)
#define VEXPRESS_SPC_WAKE_INTR_MASK 0xFFF
#ifdef CONFIG_VEXPRESS_SPC
extern bool vexpress_spc_check_loaded(void);
extern void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster, bool set);
extern void vexpress_spc_set_global_wakeup_intr(bool set);
extern int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr);
extern int vexpress_spc_get_performance(u32 cluster, u32 *freq);
extern int vexpress_spc_set_performance(u32 cluster, u32 freq);
extern void vexpress_spc_write_resume_reg(u32 cluster, u32 cpu, u32 addr);
extern int vexpress_spc_get_nb_cpus(u32 cluster);
extern void vexpress_spc_powerdown_enable(u32 cluster, bool enable);
#else
static inline bool vexpress_spc_check_loaded(void) { return false; }
static inline void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster,
bool set) { }
static inline void vexpress_spc_set_global_wakeup_intr(bool set) { }
static inline int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr)
{
return -ENODEV;
}
static inline int vexpress_spc_get_performance(u32 cluster, u32 *freq)
{
return -ENODEV;
}
static inline int vexpress_spc_set_performance(u32 cluster, u32 freq)
{
return -ENODEV;
}
static inline void vexpress_spc_write_resume_reg(u32 cluster,
u32 cpu, u32 addr) { }
static inline int vexpress_spc_get_nb_cpus(u32 cluster) { return -ENODEV; }
static inline void vexpress_spc_powerdown_enable(u32 cluster, bool enable) { }
#endif
#endif
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