mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
c53bd2e194
This silences a false positive warning with kmemcheck. Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/*
|
|
* Silicon Labs C2 port Linux support
|
|
*
|
|
* Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
|
|
* Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/kmemcheck.h>
|
|
|
|
#define C2PORT_NAME_LEN 32
|
|
|
|
/*
|
|
* C2 port basic structs
|
|
*/
|
|
|
|
/* Main struct */
|
|
struct c2port_ops;
|
|
struct c2port_device {
|
|
kmemcheck_bitfield_begin(flags);
|
|
unsigned int access:1;
|
|
unsigned int flash_access:1;
|
|
kmemcheck_bitfield_end(flags);
|
|
|
|
int id;
|
|
char name[C2PORT_NAME_LEN];
|
|
struct c2port_ops *ops;
|
|
struct mutex mutex; /* prevent races during read/write */
|
|
|
|
struct device *dev;
|
|
|
|
void *private_data;
|
|
};
|
|
|
|
/* Basic operations */
|
|
struct c2port_ops {
|
|
/* Flash layout */
|
|
unsigned short block_size; /* flash block size in bytes */
|
|
unsigned short blocks_num; /* flash blocks number */
|
|
|
|
/* Enable or disable the access to C2 port */
|
|
void (*access)(struct c2port_device *dev, int status);
|
|
|
|
/* Set C2D data line as input/output */
|
|
void (*c2d_dir)(struct c2port_device *dev, int dir);
|
|
|
|
/* Read/write C2D data line */
|
|
int (*c2d_get)(struct c2port_device *dev);
|
|
void (*c2d_set)(struct c2port_device *dev, int status);
|
|
|
|
/* Write C2CK clock line */
|
|
void (*c2ck_set)(struct c2port_device *dev, int status);
|
|
};
|
|
|
|
/*
|
|
* Exported functions
|
|
*/
|
|
|
|
#define to_class_dev(obj) container_of((obj), struct class_device, kobj)
|
|
#define to_c2port_device(obj) container_of((obj), struct c2port_device, class)
|
|
|
|
extern struct c2port_device *c2port_device_register(char *name,
|
|
struct c2port_ops *ops, void *devdata);
|
|
extern void c2port_device_unregister(struct c2port_device *dev);
|