diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2008-11-24 19:54:37 +0100 |
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committer | Thomas Gleixner <tglx@linutronix.de> | 2008-11-24 19:54:37 +0100 |
commit | 3e1d7a6219ab64e13b10b1a77c0625db9a8bd8db (patch) | |
tree | c682da7317845d7b1336e3d8498cf83bdf8f5900 /include/linux/c2port.h | |
parent | 42569c39917a08e8de1e8b5685463be7b74baebd (diff) | |
parent | 13d428afc007fcfcd6deeb215618f54cf9c0cae6 (diff) |
Merge branch 'linus' into core/futexes
Diffstat (limited to 'include/linux/c2port.h')
-rw-r--r-- | include/linux/c2port.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/include/linux/c2port.h b/include/linux/c2port.h new file mode 100644 index 00000000000..7b5a2388ba6 --- /dev/null +++ b/include/linux/c2port.h @@ -0,0 +1,65 @@ +/* + * 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> + +#define C2PORT_NAME_LEN 32 + +/* + * 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 + */ + +#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); |