add-resume-reason-sysfs.patch

If you have U-Boot with uboot-add-find-wake-reason.patch, this
patch will get you a wake reason report from

cat /sys/devices/platform/neo1973-resume.0/resume_reason

it looks like this:

  EINT00_ACCEL1
  EINT01_GSM
  EINT02_BLUETOOTH
  EINT03_DEBUGBRD
  EINT04_JACK
  EINT05_WLAN
  EINT06_AUXKEY
  EINT07_HOLDKEY
  EINT08_ACCEL2
* EINT09_PMU
    adpins
    adprem
    usbins
    usbrem
    rtcalarm
    second
    onkeyr
    onkeyf
    exton1r
    exton1f
    exton2r
    exton2f
    exton3r
    exton3f
  * batfull
    chghalt
    thlimon
    thlimoff
    usblimon
    usblimoff
    adcrdy
    onkey1s
    lowsys
    lowbat
    hightmp
    autopwrfail
    dwn1pwrfail
    dwn2pwrfail
    ledpwrfail
    ledovp
    ldo1pwrfail
    ldo2pwrfail
    ldo3pwrfail
    ldo4pwrfail
    ldo5pwrfail
    ldo6pwrfail
    hcidopwrfail
    hcidoovl
  EINT10_NULL
  EINT11_NULL
  EINT12_GLAMO
  EINT13_NULL
  EINT14_NULL
  EINT15_NULL

This shows a problem, false wake from suspend due to battery full

Signed-off-by: Andy Green <andy@openmoko.com>

2 files changed, 136 insertions, 2 deletions

diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index 40de6052b89..0a56561a975 100644
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -48,5 +48,5 @@ obj-$(CONFIG_MACH_NEO1973)	+= neo1973_version.o \
 				   neo1973_pm_gsm.o \
 				   neo1973_pm_gps.o \
 				   neo1973_pm_bt.o  \
-				   neo1973_shadow.o
-
+				   neo1973_shadow.o \
+				   neo1973_pm_resume_reason.o
diff --git a/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c b/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c
new file mode 100644
index 00000000000..cca42dc7047
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/neo1973_pm_resume_reason.c
@@ -0,0 +1,134 @@
+/*
+ * Resume reason sysfs for the FIC Neo1973 GSM Phone
+ *
+ * (C) 2008 by Openmoko Inc.
+ * Author: Andy Green <andy@openmoko.com>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License resume_reason 2 as
+ * published by the Free Software Foundation
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+#ifdef CONFIG_MACH_NEO1973_GTA02
+#include <asm/arch/gta02.h>
+#include <linux/pcf50633.h>
+
+
+static unsigned int *gstatus4_mapped;
+static char *resume_reasons[] = {
+	"EINT00_ACCEL1",
+	"EINT01_GSM",
+	"EINT02_BLUETOOTH",
+	"EINT03_DEBUGBRD",
+	"EINT04_JACK",
+	"EINT05_WLAN",
+	"EINT06_AUXKEY",
+	"EINT07_HOLDKEY",
+	"EINT08_ACCEL2",
+	"EINT09_PMU",
+	"EINT10_NULL",
+	"EINT11_NULL",
+	"EINT12_GLAMO",
+	"EINT13_NULL",
+	"EINT14_NULL",
+	"EINT15_NULL",
+	NULL
+};
+
+static ssize_t resume_reason_read(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	int bit = 0;
+	char *end = buf;
+
+	for (bit = 0; resume_reasons[bit]; bit++) {
+		if ((*gstatus4_mapped) & (1 << bit))
+			end += sprintf(end, "* %s\n", resume_reasons[bit]);
+		else
+			end += sprintf(end, "  %s\n", resume_reasons[bit]);
+
+		if (bit == 9) /* PMU */
+			end += pcf50633_report_resumers(pcf50633_global, end);
+	}
+
+	return end - buf;
+}
+
+
+static DEVICE_ATTR(resume_reason, 0644, resume_reason_read, NULL);
+
+static struct attribute *neo1973_resume_reason_sysfs_entries[] = {
+	&dev_attr_resume_reason.attr,
+	NULL
+};
+
+static struct attribute_group neo1973_resume_reason_attr_group = {
+	.name	= NULL,
+	.attrs	= neo1973_resume_reason_sysfs_entries,
+};
+
+static int __init neo1973_resume_reason_probe(struct platform_device *pdev)
+{
+	dev_info(&pdev->dev, "starting\n");
+
+	switch (machine_arch_type) {
+#ifdef CONFIG_MACH_NEO1973_GTA01
+	case MACH_TYPE_NEO1973_GTA01:
+		return -EINVAL;
+#endif /* CONFIG_MACH_NEO1973_GTA01 */
+	default:
+		gstatus4_mapped = ioremap(0x560000BC, 0x4);
+		if (!gstatus4_mapped) {
+			dev_err(&pdev->dev, "failed to ioremap() memory region\n");
+			return -EINVAL;
+		}
+		break;
+	}
+
+	return sysfs_create_group(&pdev->dev.kobj, &neo1973_resume_reason_attr_group);
+}
+
+static int neo1973_resume_reason_remove(struct platform_device *pdev)
+{
+	sysfs_remove_group(&pdev->dev.kobj, &neo1973_resume_reason_attr_group);
+	iounmap(gstatus4_mapped);
+	return 0;
+}
+
+static struct platform_driver neo1973_resume_reason_driver = {
+	.probe		= neo1973_resume_reason_probe,
+	.remove		= neo1973_resume_reason_remove,
+	.driver		= {
+		.name		= "neo1973-resume",
+	},
+};
+
+static int __devinit neo1973_resume_reason_init(void)
+{
+	return platform_driver_register(&neo1973_resume_reason_driver);
+}
+
+static void neo1973_resume_reason_exit(void)
+{
+	platform_driver_unregister(&neo1973_resume_reason_driver);
+}
+
+module_init(neo1973_resume_reason_init);
+module_exit(neo1973_resume_reason_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Andy Green <andy@openmoko.com>");
+MODULE_DESCRIPTION("Neo1973 resume_reason");
+#endif