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Ole André Vadla Ravnås
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179
include/linux/vexpress.h
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179
include/linux/vexpress.h
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Copyright (C) 2012 ARM Limited
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*/
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#ifndef _LINUX_VEXPRESS_H
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#define _LINUX_VEXPRESS_H
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#include <linux/device.h>
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#include <linux/reboot.h>
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#define VEXPRESS_SITE_MB 0
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#define VEXPRESS_SITE_DB1 1
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#define VEXPRESS_SITE_DB2 2
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#define VEXPRESS_SITE_MASTER 0xf
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#define VEXPRESS_CONFIG_STATUS_DONE 0
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#define VEXPRESS_CONFIG_STATUS_WAIT 1
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#define VEXPRESS_GPIO_MMC_CARDIN 0
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#define VEXPRESS_GPIO_MMC_WPROT 1
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#define VEXPRESS_GPIO_FLASH_WPn 2
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#define VEXPRESS_GPIO_LED0 3
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#define VEXPRESS_GPIO_LED1 4
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#define VEXPRESS_GPIO_LED2 5
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#define VEXPRESS_GPIO_LED3 6
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#define VEXPRESS_GPIO_LED4 7
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#define VEXPRESS_GPIO_LED5 8
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#define VEXPRESS_GPIO_LED6 9
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#define VEXPRESS_GPIO_LED7 10
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#define VEXPRESS_RES_FUNC(_site, _func) \
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{ \
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.start = (_site), \
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.end = (_func), \
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.flags = IORESOURCE_BUS, \
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}
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/* Config bridge API */
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/**
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* struct vexpress_config_bridge_info - description of the platform
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* configuration infrastructure bridge.
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*
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* @name: Bridge name
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*
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* @func_get: Obtains pointer to a configuration function for a given
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* device or a Device Tree node, to be used with @func_put
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* and @func_exec. The node pointer should take precedence
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* over device pointer when both are passed.
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*
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* @func_put: Tells the bridge that the function will not be used any
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* more, so all allocated resources can be released.
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*
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* @func_exec: Executes a configuration function read or write operation.
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* The offset selects a 32 bit word of the value accessed.
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* Must return VEXPRESS_CONFIG_STATUS_DONE when operation
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* is finished immediately, VEXPRESS_CONFIG_STATUS_WAIT when
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* will be completed in some time or negative value in case
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* of error.
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*/
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struct vexpress_config_bridge_info {
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const char *name;
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void *(*func_get)(struct device *dev, struct device_node *node,
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const char *id);
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void (*func_put)(void *func);
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int (*func_exec)(void *func, int offset, bool write, u32 *data);
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};
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struct vexpress_config_bridge;
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struct vexpress_config_bridge *vexpress_config_bridge_register(
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struct device_node *node,
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struct vexpress_config_bridge_info *info);
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void vexpress_config_bridge_unregister(struct vexpress_config_bridge *bridge);
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void vexpress_config_complete(struct vexpress_config_bridge *bridge,
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int status);
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/* Config function API */
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struct vexpress_config_func;
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struct vexpress_config_func *__vexpress_config_func_get(
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struct vexpress_config_bridge *bridge,
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struct device *dev,
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struct device_node *node,
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const char *id);
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#define vexpress_config_func_get(bridge, id) \
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__vexpress_config_func_get(bridge, NULL, NULL, id)
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#define vexpress_config_func_get_by_dev(dev) \
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__vexpress_config_func_get(NULL, dev, NULL, NULL)
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#define vexpress_config_func_get_by_node(node) \
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__vexpress_config_func_get(NULL, NULL, node, NULL)
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void vexpress_config_func_put(struct vexpress_config_func *func);
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/* Both may sleep! */
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int vexpress_config_read(struct vexpress_config_func *func, int offset,
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u32 *data);
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int vexpress_config_write(struct vexpress_config_func *func, int offset,
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u32 data);
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/* Platform control */
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u32 vexpress_get_procid(int site);
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u32 vexpress_get_hbi(int site);
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void *vexpress_get_24mhz_clock_base(void);
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void vexpress_flags_set(u32 data);
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#define vexpress_get_site_by_node(node) __vexpress_get_site(NULL, node)
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#define vexpress_get_site_by_dev(dev) __vexpress_get_site(dev, NULL)
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unsigned __vexpress_get_site(struct device *dev, struct device_node *node);
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void vexpress_sysreg_early_init(void __iomem *base);
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void vexpress_sysreg_of_early_init(void);
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/* Clocks */
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struct clk *vexpress_osc_setup(struct device *dev);
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void vexpress_osc_of_setup(struct device_node *node);
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struct clk *vexpress_clk_register_spc(const char *name, int cluster_id);
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void vexpress_clk_of_register_spc(void);
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void vexpress_clk_init(void __iomem *sp810_base);
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void vexpress_clk_of_init(void);
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/* SPC */
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#define VEXPRESS_SPC_WAKE_INTR_IRQ(cluster, cpu) \
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(1 << (4 * (cluster) + (cpu)))
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#define VEXPRESS_SPC_WAKE_INTR_FIQ(cluster, cpu) \
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(1 << (7 * (cluster) + (cpu)))
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#define VEXPRESS_SPC_WAKE_INTR_SWDOG (1 << 10)
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#define VEXPRESS_SPC_WAKE_INTR_GTIMER (1 << 11)
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#define VEXPRESS_SPC_WAKE_INTR_MASK 0xFFF
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#ifdef CONFIG_VEXPRESS_SPC
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extern bool vexpress_spc_check_loaded(void);
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extern void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster, bool set);
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extern void vexpress_spc_set_global_wakeup_intr(bool set);
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extern int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr);
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extern int vexpress_spc_get_performance(u32 cluster, u32 *freq);
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extern int vexpress_spc_set_performance(u32 cluster, u32 freq);
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extern void vexpress_spc_write_resume_reg(u32 cluster, u32 cpu, u32 addr);
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extern int vexpress_spc_get_nb_cpus(u32 cluster);
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extern void vexpress_spc_powerdown_enable(u32 cluster, bool enable);
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#else
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static inline bool vexpress_spc_check_loaded(void) { return false; }
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static inline void vexpress_spc_set_cpu_wakeup_irq(u32 cpu, u32 cluster,
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bool set) { }
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static inline void vexpress_spc_set_global_wakeup_intr(bool set) { }
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static inline int vexpress_spc_get_freq_table(u32 cluster, u32 **fptr)
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{
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return -ENODEV;
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}
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static inline int vexpress_spc_get_performance(u32 cluster, u32 *freq)
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{
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return -ENODEV;
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}
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static inline int vexpress_spc_set_performance(u32 cluster, u32 freq)
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{
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return -ENODEV;
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}
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static inline void vexpress_spc_write_resume_reg(u32 cluster,
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u32 cpu, u32 addr) { }
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static inline int vexpress_spc_get_nb_cpus(u32 cluster) { return -ENODEV; }
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static inline void vexpress_spc_powerdown_enable(u32 cluster, bool enable) { }
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#endif
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#endif
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