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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-08-18 05:06:59 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-08-18 05:06:59 -0400
commita4e137ab1447fc5009f21e257971aa60a9ec98fb (patch)
tree5ceb2e007a746fa84e45f08fefe6d37a3572fea1 /drivers/mfd/mcp.h
parent099d44e869f1886b5eb02a5145ca97b5e4142e28 (diff)
[MFD] Add multimedia communication port core support
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>
Diffstat (limited to 'drivers/mfd/mcp.h')
-rw-r--r--drivers/mfd/mcp.h66
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/mfd/mcp.h b/drivers/mfd/mcp.h
new file mode 100644
index 000000000000..c093a93b8808
--- /dev/null
+++ b/drivers/mfd/mcp.h
@@ -0,0 +1,66 @@
1/*
2 * linux/drivers/mfd/mcp.h
3 *
4 * Copyright (C) 2001 Russell King, All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License.
9 */
10#ifndef MCP_H
11#define MCP_H
12
13struct mcp_ops;
14
15struct mcp {
16 struct module *owner;
17 struct mcp_ops *ops;
18 spinlock_t lock;
19 int use_count;
20 unsigned int sclk_rate;
21 unsigned int rw_timeout;
22 dma_device_t dma_audio_rd;
23 dma_device_t dma_audio_wr;
24 dma_device_t dma_telco_rd;
25 dma_device_t dma_telco_wr;
26 struct device attached_device;
27};
28
29struct mcp_ops {
30 void (*set_telecom_divisor)(struct mcp *, unsigned int);
31 void (*set_audio_divisor)(struct mcp *, unsigned int);
32 void (*reg_write)(struct mcp *, unsigned int, unsigned int);
33 unsigned int (*reg_read)(struct mcp *, unsigned int);
34 void (*enable)(struct mcp *);
35 void (*disable)(struct mcp *);
36};
37
38void mcp_set_telecom_divisor(struct mcp *, unsigned int);
39void mcp_set_audio_divisor(struct mcp *, unsigned int);
40void mcp_reg_write(struct mcp *, unsigned int, unsigned int);
41unsigned int mcp_reg_read(struct mcp *, unsigned int);
42void mcp_enable(struct mcp *);
43void mcp_disable(struct mcp *);
44#define mcp_get_sclk_rate(mcp) ((mcp)->sclk_rate)
45
46struct mcp *mcp_host_alloc(struct device *, size_t);
47int mcp_host_register(struct mcp *);
48void mcp_host_unregister(struct mcp *);
49
50struct mcp_driver {
51 struct device_driver drv;
52 int (*probe)(struct mcp *);
53 void (*remove)(struct mcp *);
54 int (*suspend)(struct mcp *, pm_message_t);
55 int (*resume)(struct mcp *);
56};
57
58int mcp_driver_register(struct mcp_driver *);
59void mcp_driver_unregister(struct mcp_driver *);
60
61#define mcp_get_drvdata(mcp) dev_get_drvdata(&(mcp)->attached_device)
62#define mcp_set_drvdata(mcp,d) dev_set_drvdata(&(mcp)->attached_device, d)
63
64#define mcp_priv(mcp) ((void *)((mcp)+1))
65
66#endif