c9be0a36f9
Passing the attribute to the low level IO functions allows all kinds of cleanups, by sharing low level IO code without requiring an own function for every piece of data. Also drivers can extend the attributes with own data fields and use that in the low level function. Similar to sysdev_attributes and normal attributes. This is a tree-wide sweep, converting everything in one go. No functional changes in this patch other than passing the new argument everywhere. Tested on x86, the non x86 parts are uncompiled. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
116 lines
2.7 KiB
C
116 lines
2.7 KiB
C
/*
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* 7 Segment LED routines
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* Based on RBTX49xx patch from CELF patch archive.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* (C) Copyright TOSHIBA CORPORATION 2005-2007
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* All Rights Reserved.
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*/
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#include <linux/sysdev.h>
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#include <linux/slab.h>
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#include <linux/map_to_7segment.h>
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#include <asm/txx9/generic.h>
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static unsigned int tx_7segled_num;
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static void (*tx_7segled_putc)(unsigned int pos, unsigned char val);
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void __init txx9_7segled_init(unsigned int num,
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void (*putc)(unsigned int pos, unsigned char val))
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{
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tx_7segled_num = num;
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tx_7segled_putc = putc;
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}
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static SEG7_CONVERSION_MAP(txx9_seg7map, MAP_ASCII7SEG_ALPHANUM_LC);
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int txx9_7segled_putc(unsigned int pos, char c)
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{
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if (pos >= tx_7segled_num)
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return -EINVAL;
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c = map_to_seg7(&txx9_seg7map, c);
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if (c < 0)
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return c;
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tx_7segled_putc(pos, c);
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return 0;
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}
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static ssize_t ascii_store(struct sys_device *dev,
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struct sysdev_attribute *attr,
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const char *buf, size_t size)
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{
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unsigned int ch = dev->id;
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txx9_7segled_putc(ch, buf[0]);
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return size;
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}
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static ssize_t raw_store(struct sys_device *dev,
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struct sysdev_attribute *attr,
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const char *buf, size_t size)
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{
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unsigned int ch = dev->id;
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tx_7segled_putc(ch, buf[0]);
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return size;
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}
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static SYSDEV_ATTR(ascii, 0200, NULL, ascii_store);
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static SYSDEV_ATTR(raw, 0200, NULL, raw_store);
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static ssize_t map_seg7_show(struct sysdev_class *class,
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struct sysdev_class_attribute *attr,
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char *buf)
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{
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memcpy(buf, &txx9_seg7map, sizeof(txx9_seg7map));
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return sizeof(txx9_seg7map);
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}
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static ssize_t map_seg7_store(struct sysdev_class *class,
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struct sysdev_class_attribute *attr,
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const char *buf, size_t size)
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{
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if (size != sizeof(txx9_seg7map))
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return -EINVAL;
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memcpy(&txx9_seg7map, buf, size);
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return size;
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}
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static SYSDEV_CLASS_ATTR(map_seg7, 0600, map_seg7_show, map_seg7_store);
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static struct sysdev_class tx_7segled_sysdev_class = {
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.name = "7segled",
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};
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static int __init tx_7segled_init_sysfs(void)
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{
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int error, i;
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if (!tx_7segled_num)
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return -ENODEV;
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error = sysdev_class_register(&tx_7segled_sysdev_class);
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if (error)
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return error;
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error = sysdev_class_create_file(&tx_7segled_sysdev_class,
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&attr_map_seg7);
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if (error)
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return error;
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for (i = 0; i < tx_7segled_num; i++) {
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struct sys_device *dev;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev) {
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error = -ENODEV;
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break;
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}
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dev->id = i;
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dev->cls = &tx_7segled_sysdev_class;
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error = sysdev_register(dev);
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if (!error) {
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sysdev_create_file(dev, &attr_ascii);
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sysdev_create_file(dev, &attr_raw);
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}
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}
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return error;
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}
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device_initcall(tx_7segled_init_sysfs);
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