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-rw-r--r--arch/mips/include/asm/cdmm.h109
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diff --git a/arch/mips/include/asm/cdmm.h b/arch/mips/include/asm/cdmm.h
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+++ b/arch/mips/include/asm/cdmm.h
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+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2014 Imagination Technologies Ltd.
+ */
+#ifndef __ASM_CDMM_H
+#define __ASM_CDMM_H
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+
+/**
+ * struct mips_cdmm_device - Represents a single device on a CDMM bus.
+ * @dev: Driver model device object.
+ * @cpu: CPU which can access this device.
+ * @res: MMIO resource.
+ * @type: Device type identifier.
+ * @rev: Device revision number.
+ */
+struct mips_cdmm_device {
+ struct device dev;
+ unsigned int cpu;
+ struct resource res;
+ unsigned int type;
+ unsigned int rev;
+};
+
+/**
+ * struct mips_cdmm_driver - Represents a driver for a CDMM device.
+ * @drv: Driver model driver object.
+ * @probe Callback for probing newly discovered devices.
+ * @remove: Callback to remove the device.
+ * @shutdown: Callback on system shutdown.
+ * @cpu_down: Callback when the parent CPU is going down.
+ * Any CPU pinned threads/timers should be disabled.
+ * @cpu_up: Callback when the parent CPU is coming back up again.
+ * CPU pinned threads/timers can be restarted.
+ * @id_table: Table for CDMM IDs to match against.
+ */
+struct mips_cdmm_driver {
+ struct device_driver drv;
+ int (*probe)(struct mips_cdmm_device *);
+ int (*remove)(struct mips_cdmm_device *);
+ void (*shutdown)(struct mips_cdmm_device *);
+ int (*cpu_down)(struct mips_cdmm_device *);
+ int (*cpu_up)(struct mips_cdmm_device *);
+ const struct mips_cdmm_device_id *id_table;
+};
+
+/**
+ * mips_cdmm_phys_base() - Choose a physical base address for CDMM region.
+ *
+ * Picking a suitable physical address at which to map the CDMM region is
+ * platform specific, so this function can be defined by platform code to
+ * pick a suitable value if none is configured by the bootloader.
+ *
+ * This address must be 32kB aligned, and the region occupies a maximum of 32kB
+ * of physical address space which must not be used for anything else.
+ *
+ * Returns: Physical base address for CDMM region, or 0 on failure.
+ */
+phys_addr_t mips_cdmm_phys_base(void);
+
+extern struct bus_type mips_cdmm_bustype;
+void __iomem *mips_cdmm_early_probe(unsigned int dev_type);
+
+#define to_mips_cdmm_device(d) container_of(d, struct mips_cdmm_device, dev)
+
+#define mips_cdmm_get_drvdata(d) dev_get_drvdata(&d->dev)
+#define mips_cdmm_set_drvdata(d, p) dev_set_drvdata(&d->dev, p)
+
+int mips_cdmm_driver_register(struct mips_cdmm_driver *);
+void mips_cdmm_driver_unregister(struct mips_cdmm_driver *);
+
+/*
+ * module_mips_cdmm_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit. This eliminates a lot of
+ * boilerplate. Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_mips_cdmm_driver(__mips_cdmm_driver) \
+ module_driver(__mips_cdmm_driver, mips_cdmm_driver_register, \
+ mips_cdmm_driver_unregister)
+
+/*
+ * builtin_mips_cdmm_driver() - Helper macro for drivers that don't do anything
+ * special in init and have no exit. This eliminates some boilerplate. Each
+ * driver may only use this macro once, and calling it replaces device_initcall
+ * (or in some cases, the legacy __initcall). This is meant to be a direct
+ * parallel of module_mips_cdmm_driver() above but without the __exit stuff that
+ * is not used for builtin cases.
+ */
+#define builtin_mips_cdmm_driver(__mips_cdmm_driver) \
+ builtin_driver(__mips_cdmm_driver, mips_cdmm_driver_register)
+
+/* drivers/tty/mips_ejtag_fdc.c */
+
+#ifdef CONFIG_MIPS_EJTAG_FDC_EARLYCON
+int setup_early_fdc_console(void);
+#else
+static inline int setup_early_fdc_console(void)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* __ASM_CDMM_H */