Git Repo - linux.git/blame_incremental

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Commit	Line	Data
	1	/*
	2	* Silicon Labs C2 port Linux support
	3	*
	4	* Copyright (c) 2007 Rodolfo Giometti <[email protected]>
	5	* Copyright (c) 2007 Eurotech S.p.A. <[email protected]>
	6	*
	7	* This program is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License version 2 as published by
	9	* the Free Software Foundation
	10	*/
	11
	12	#include <linux/kmemcheck.h>
	13
	14	#define C2PORT_NAME_LEN 32
	15
	16	struct device;
	17
	18	/*
	19	* C2 port basic structs
	20	*/
	21
	22	/* Main struct */
	23	struct c2port_ops;
	24	struct c2port_device {
	25	kmemcheck_bitfield_begin(flags);
	26	unsigned int access:1;
	27	unsigned int flash_access:1;
	28	kmemcheck_bitfield_end(flags);
	29
	30	int id;
	31	char name[C2PORT_NAME_LEN];
	32	struct c2port_ops *ops;
	33	struct mutex mutex; /* prevent races during read/write */
	34
	35	struct device *dev;
	36
	37	void *private_data;
	38	};
	39
	40	/* Basic operations */
	41	struct c2port_ops {
	42	/* Flash layout */
	43	unsigned short block_size; /* flash block size in bytes */
	44	unsigned short blocks_num; /* flash blocks number */
	45
	46	/* Enable or disable the access to C2 port */
	47	void (access)(struct c2port_device dev, int status);
	48
	49	/* Set C2D data line as input/output */
	50	void (c2d_dir)(struct c2port_device dev, int dir);
	51
	52	/* Read/write C2D data line */
	53	int (c2d_get)(struct c2port_device dev);
	54	void (c2d_set)(struct c2port_device dev, int status);
	55
	56	/* Write C2CK clock line */
	57	void (c2ck_set)(struct c2port_device dev, int status);
	58	};
	59
	60	/*
	61	* Exported functions
	62	*/
	63
	64	extern struct c2port_device c2port_device_register(char name,
	65	struct c2port_ops ops, void devdata);
	66	extern void c2port_device_unregister(struct c2port_device *dev);