2 * 7 Segment LED routines
3 * Based on RBTX49xx patch from CELF patch archive.
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
9 * (C) Copyright TOSHIBA CORPORATION 2005-2007
10 * All Rights Reserved.
12 #include <linux/sysdev.h>
13 #include <linux/slab.h>
14 #include <linux/map_to_7segment.h>
15 #include <asm/txx9/generic.h>
17 static unsigned int tx_7segled_num;
18 static void (*tx_7segled_putc)(unsigned int pos, unsigned char val);
20 void __init txx9_7segled_init(unsigned int num,
21 void (*putc)(unsigned int pos, unsigned char val))
24 tx_7segled_putc = putc;
27 static SEG7_CONVERSION_MAP(txx9_seg7map, MAP_ASCII7SEG_ALPHANUM_LC);
29 int txx9_7segled_putc(unsigned int pos, char c)
31 if (pos >= tx_7segled_num)
33 c = map_to_seg7(&txx9_seg7map, c);
36 tx_7segled_putc(pos, c);
40 static ssize_t ascii_store(struct sys_device *dev,
41 struct sysdev_attribute *attr,
42 const char *buf, size_t size)
44 unsigned int ch = dev->id;
45 txx9_7segled_putc(ch, buf[0]);
49 static ssize_t raw_store(struct sys_device *dev,
50 struct sysdev_attribute *attr,
51 const char *buf, size_t size)
53 unsigned int ch = dev->id;
54 tx_7segled_putc(ch, buf[0]);
58 static SYSDEV_ATTR(ascii, 0200, NULL, ascii_store);
59 static SYSDEV_ATTR(raw, 0200, NULL, raw_store);
61 static ssize_t map_seg7_show(struct sysdev_class *class, char *buf)
63 memcpy(buf, &txx9_seg7map, sizeof(txx9_seg7map));
64 return sizeof(txx9_seg7map);
67 static ssize_t map_seg7_store(struct sysdev_class *class,
68 const char *buf, size_t size)
70 if (size != sizeof(txx9_seg7map))
72 memcpy(&txx9_seg7map, buf, size);
76 static SYSDEV_CLASS_ATTR(map_seg7, 0600, map_seg7_show, map_seg7_store);
78 static struct sysdev_class tx_7segled_sysdev_class = {
82 static int __init tx_7segled_init_sysfs(void)
87 error = sysdev_class_register(&tx_7segled_sysdev_class);
90 error = sysdev_class_create_file(&tx_7segled_sysdev_class,
94 for (i = 0; i < tx_7segled_num; i++) {
95 struct sys_device *dev;
96 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
102 dev->cls = &tx_7segled_sysdev_class;
103 error = sysdev_register(dev);
105 sysdev_create_file(dev, &attr_ascii);
106 sysdev_create_file(dev, &attr_raw);
112 device_initcall(tx_7segled_init_sysfs);