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-rw-r--r--include/linux/vexpress.h121
1 files changed, 121 insertions, 0 deletions
diff --git a/include/linux/vexpress.h b/include/linux/vexpress.h
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+++ b/include/linux/vexpress.h
@@ -0,0 +1,121 @@
+/*
+ * 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_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);
+
+void vexpress_clk_init(void __iomem *sp810_base);
+void vexpress_clk_of_init(void);
+
+#endif