a4e137ab14
Add support for the core of the multimedia communication port framework. This is a port used to communicate with devices with two DMA paths and a control path. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
66 lines
1.9 KiB
C
66 lines
1.9 KiB
C
/*
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* linux/drivers/mfd/mcp.h
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*
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* Copyright (C) 2001 Russell King, All Rights Reserved.
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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 as published by
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* the Free Software Foundation; either version 2 of the License.
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*/
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#ifndef MCP_H
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#define MCP_H
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struct mcp_ops;
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struct mcp {
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struct module *owner;
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struct mcp_ops *ops;
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spinlock_t lock;
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int use_count;
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unsigned int sclk_rate;
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unsigned int rw_timeout;
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dma_device_t dma_audio_rd;
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dma_device_t dma_audio_wr;
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dma_device_t dma_telco_rd;
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dma_device_t dma_telco_wr;
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struct device attached_device;
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};
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struct mcp_ops {
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void (*set_telecom_divisor)(struct mcp *, unsigned int);
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void (*set_audio_divisor)(struct mcp *, unsigned int);
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void (*reg_write)(struct mcp *, unsigned int, unsigned int);
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unsigned int (*reg_read)(struct mcp *, unsigned int);
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void (*enable)(struct mcp *);
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void (*disable)(struct mcp *);
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};
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void mcp_set_telecom_divisor(struct mcp *, unsigned int);
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void mcp_set_audio_divisor(struct mcp *, unsigned int);
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void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
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unsigned int mcp_reg_read(struct mcp *, unsigned int);
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void mcp_enable(struct mcp *);
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void mcp_disable(struct mcp *);
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#define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
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struct mcp *mcp_host_alloc(struct device *, size_t);
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int mcp_host_register(struct mcp *);
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void mcp_host_unregister(struct mcp *);
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struct mcp_driver {
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struct device_driver drv;
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int (*probe)(struct mcp *);
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void (*remove)(struct mcp *);
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int (*suspend)(struct mcp *, pm_message_t);
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int (*resume)(struct mcp *);
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};
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int mcp_driver_register(struct mcp_driver *);
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void mcp_driver_unregister(struct mcp_driver *);
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#define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device)
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#define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d)
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#define mcp_priv(mcp) ((void *)((mcp)+1))
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#endif
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