2 * Resume reason sysfs for the Openmoko Freerunner GSM Phone
4 * (C) 2008 by Openmoko Inc.
5 * Author: Andy Green <andy@openmoko.com>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License resume_reason 2 as
10 * published by the Free Software Foundation
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/kernel.h>
17 #include <linux/platform_device.h>
20 #include <mach/regs-gpio.h>
22 static unsigned int *gstatus4_mapped;
23 static char *resume_reasons[17] = {
43 static ssize_t resume_reason_read(struct device *dev,
44 struct device_attribute *attr,
50 for (bit = 0; resume_reasons[bit]; bit++) {
51 if ((*gstatus4_mapped) & (1 << bit))
52 end += sprintf(end, "* %s\n", resume_reasons[bit]);
54 end += sprintf(end, " %s\n", resume_reasons[bit]);
62 static DEVICE_ATTR(resume_reason, 0644, resume_reason_read, NULL);
64 static struct attribute *gta02_resume_reason_sysfs_entries[] = {
65 &dev_attr_resume_reason.attr,
69 static struct attribute_group gta02_resume_reason_attr_group = {
71 .attrs = gta02_resume_reason_sysfs_entries,
74 static int __init gta02_resume_reason_probe(struct platform_device *pdev)
76 dev_info(&pdev->dev, "starting\n");
78 gstatus4_mapped = ioremap(S3C24XX_GSTATUS4, 0x4);
79 if (!gstatus4_mapped) {
80 dev_err(&pdev->dev, "failed to ioremap() memory region\n");
84 return sysfs_create_group(&pdev->dev.kobj,
85 >a02_resume_reason_attr_group);
88 static int gta02_resume_reason_remove(struct platform_device *pdev)
90 sysfs_remove_group(&pdev->dev.kobj, >a02_resume_reason_attr_group);
91 iounmap(gstatus4_mapped);
95 static struct platform_driver gta02_resume_reason_driver = {
96 .probe = gta02_resume_reason_probe,
97 .remove = gta02_resume_reason_remove,
99 .name = "gta02-resume-reason",
103 static int __devinit gta02_resume_reason_init(void)
105 return platform_driver_register(>a02_resume_reason_driver);
108 static void gta02_resume_reason_exit(void)
110 platform_driver_unregister(>a02_resume_reason_driver);
113 module_init(gta02_resume_reason_init);
114 module_exit(gta02_resume_reason_exit);
116 MODULE_LICENSE("GPL");
117 MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
118 MODULE_DESCRIPTION("GTA02 resume_reason");