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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>
#include <linux/err.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);
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 device *dev,
struct device_node *node);
#define vexpress_config_func_get_by_dev(dev) \
__vexpress_config_func_get(dev, NULL)
#define vexpress_config_func_get_by_node(node) \
__vexpress_config_func_get(NULL, node)
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);
void vexpress_power_off(void);
void vexpress_restart(char str, const char *cmd);
/* Clocks */
struct clk *vexpress_osc_setup(struct device *dev);
void vexpress_osc_of_setup(struct device_node *node);
struct clk *vexpress_clk_register_spc(const char *name, int cluster_id);
void vexpress_clk_of_register_spc(void);
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_ARM_SPC
extern u32 vexpress_spc_get_clusterid(int cpu_part_no);
extern u32 vexpress_spc_read_rsthold_reg(int cluster);
extern u32 vexpress_spc_read_rststat_reg(int cluster);
extern u32 vexpress_scc_read_rststat(int cluster);
extern u32 vexpress_spc_get_wake_intr(int raw);
extern int vexpress_spc_standbywfi_status(int cluster, int cpu);
extern int vexpress_spc_standbywfil2_status(int cluster);
extern int vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster, u32 set);
extern int vexpress_spc_set_global_wakeup_intr(u32 set);
extern unsigned int *vexpress_spc_get_freq_table(uint32_t cluster, int *count);
extern int vexpress_spc_get_performance(int cluster, u32 *freq);
extern int vexpress_spc_set_performance(int cluster, u32 freq);
extern int vexpress_spc_wfi_cpustat(int cluster);
extern void vexpress_spc_set_wake_intr(u32 mask);
extern void vexpress_spc_write_bxaddr_reg(int cluster, int cpu, u32 val);
extern int vexpress_spc_get_nb_cpus(int cluster);
extern void vexpress_spc_write_rsthold_reg(int cluster, u32 value);
extern void vexpress_spc_powerdown_enable(int cluster, int enable);
extern void vexpress_spc_adb400_pd_enable(int cluster, int enable);
extern void vexpress_spc_wfi_cpureset(int cluster, int cpu, int enable);
extern void vexpress_spc_wfi_cluster_reset(int cluster, int enable);
extern void vexpress_scc_ctl_snoops(int cluster, int enable);
extern bool vexpress_spc_check_loaded(void);
#else
static inline int vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster, u32 set)
{
return 0;
}
static inline int vexpress_spc_set_global_wakeup_intr(u32 set)
{
return 0;
}
static inline int vexpress_spc_standbywfi_status(int cluster, int cpu)
{
return 0;
}
static inline int vexpress_spc_standbywfil2_status(int cluster)
{
return 0;
}
static inline u32 vexpress_spc_get_clusterid(int cpu_part_no)
{
return 0;
}
static inline u32 vexpress_spc_read_rsthold_reg(int cluster)
{
return 0;
}
static inline u32 vexpress_spc_read_rststat_reg(int cluster)
{
return 0;
}
static inline void vexpress_spc_write_bxaddr_reg(int cluster, int cpu, u32 val)
{
}
static inline void vexpress_spc_write_rsthold_reg(int cluster, u32 value)
{
}
static inline u32 vexpress_scc_read_rststat(int cluster)
{
return 0;
}
static inline unsigned int *vexpress_spc_get_freq_table(uint32_t cluster, int *count)
{
return ERR_PTR(-ENOSYS);
}
static inline int vexpress_spc_get_performance(int cluster, u32 *freq)
{
return -ENOSYS;
}
static inline int vexpress_spc_set_performance(int cluster, u32 freq)
{
return -ENOSYS;
}
static inline void vexpress_spc_set_wake_intr(u32 mask) { }
static inline u32 vexpress_spc_get_wake_intr(int raw) { return 0; }
static inline void vexpress_spc_powerdown_enable(int cluster, int enable) { }
static inline void vexpress_spc_adb400_pd_enable(int cluster, int enable) { }
static inline void vexpress_spc_wfi_cpureset(int cluster, int cpu, int enable)
{ }
static inline int vexpress_spc_wfi_cpustat(int cluster) { return 0; }
static inline void vexpress_spc_wfi_cluster_reset(int cluster, int enable) { }
static inline bool vexpress_spc_check_loaded(void)
{
return false;
}
static inline void vexpress_scc_ctl_snoops(int cluster, int enable) { }
#endif
#endif
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