forked from luck/tmp_suning_uos_patched
d2912cb15b
Based on 2 normalized pattern(s): 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 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 # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Enrico Weigelt <info@metux.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Silicon Labs C2 port Linux support
|
|
*
|
|
* Copyright (c) 2007 Rodolfo Giometti <giometti@linux.it>
|
|
* Copyright (c) 2007 Eurotech S.p.A. <info@eurotech.it>
|
|
*/
|
|
|
|
#define C2PORT_NAME_LEN 32
|
|
|
|
struct device;
|
|
|
|
/*
|
|
* C2 port basic structs
|
|
*/
|
|
|
|
/* Main struct */
|
|
struct c2port_ops;
|
|
struct c2port_device {
|
|
unsigned int access:1;
|
|
unsigned int flash_access:1;
|
|
|
|
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
|
|
*/
|
|
|
|
extern struct c2port_device *c2port_device_register(char *name,
|
|
struct c2port_ops *ops, void *devdata);
|
|
extern void c2port_device_unregister(struct c2port_device *dev);
|