path: root/recipes/linux/linux-openmoko-2.6.34/0022-Openmoko-resume-reason-sysfs-node-ported-from-2.6.29.patch

From c52969e6e305d83edb489f46a6985008a0b3f1cb Mon Sep 17 00:00:00 2001
From: Timo Juhani Lindfors <timo.lindfors@iki.fi>
Date: Mon, 18 Oct 2010 21:17:42 +0200
Subject: [PATCH] Openmoko resume reason sysfs node ported from 2.6.29

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 arch/arm/mach-s3c2440/mach-gta02.c      |    5 +
 drivers/misc/Kconfig                    |    7 ++
 drivers/misc/Makefile                   |    1 +
 drivers/misc/neo1973_pm_resume_reason.c |  142 +++++++++++++++++++++++++++++++
 4 files changed, 155 insertions(+), 0 deletions(-)
 create mode 100644 drivers/misc/neo1973_pm_resume_reason.c

diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c
index 6b57c42..702b80a 100644
--- a/arch/arm/mach-s3c2440/mach-gta02.c
+++ b/arch/arm/mach-s3c2440/mach-gta02.c
@@ -152,6 +152,10 @@ static long gta02_panic_blink(long count)
 	return delay;
 }
 
+struct platform_device gta02_resume_reason_device = {
+	.name 		= "neo1973-resume",
+	.num_resources	= 0,
+};
 
 static struct map_desc gta02_iodesc[] __initdata = {
 	{
@@ -1289,6 +1293,7 @@ static struct platform_device *gta02_devices[] __initdata = {
 static struct platform_device *gta02_devices_pmu_children[] = {
     &gta02_hdq_device,
 	&gta02_platform_bat,
+	&gta02_resume_reason_device,
 };
 
 /*
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 0d0d625..1baeedd 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -327,6 +327,13 @@ config VMWARE_BALLOON
 	  To compile this driver as a module, choose M here: the
 	  module will be called vmware_balloon.
 
+config OPENMOKO_RESUME_REASON
+	tristate "Openmoko resume reason driver"
+	depends on SYSFS
+	help
+	  This driver adds a sysfs entry for accessing the resume reason
+          of the openmoko board.
+
 source "drivers/misc/c2port/Kconfig"
 source "drivers/misc/eeprom/Kconfig"
 source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 7b6f7ee..57b6984 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -30,3 +30,4 @@ obj-$(CONFIG_IWMC3200TOP)      += iwmc3200top/
 obj-y				+= eeprom/
 obj-y				+= cb710/
 obj-$(CONFIG_VMWARE_BALLOON)	+= vmware_balloon.o
+obj-$(CONFIG_OPENMOKO_RESUME_REASON)	+= neo1973_pm_resume_reason.o
diff --git a/drivers/misc/neo1973_pm_resume_reason.c b/drivers/misc/neo1973_pm_resume_reason.c
new file mode 100644
index 0000000..5bcc818
--- /dev/null
+++ b/drivers/misc/neo1973_pm_resume_reason.c
@@ -0,0 +1,142 @@
+/*
+ * 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 <mach/hardware.h>
+#include <asm/mach-types.h>
+
+#ifdef CONFIG_MACH_NEO1973_GTA02
+#include <mach/gta02.h>
+#include <linux/mfd/pcf50633/core.h>
+#endif
+
+static unsigned int *gstatus4_mapped;
+static char *resume_reasons[][17] = { { /* GTA01 */
+	"EINT00_NULL",
+	"EINT01_GSM",
+	"EINT02_NULL",
+	"EINT03_NULL",
+	"EINT04_JACK",
+	"EINT05_SDCARD",
+	"EINT06_AUXKEY",
+	"EINT07_HOLDKEY",
+	"EINT08_NULL",
+	"EINT09_NULL",
+	"EINT10_NULL",
+	"EINT11_NULL",
+	"EINT12_NULL",
+	"EINT13_NULL",
+	"EINT14_NULL",
+	"EINT15_NULL",
+	NULL
+}, { /* GTA02 */
+	"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;
+	int gta = !!machine_is_neo1973_gta02();
+
+	for (bit = 0; resume_reasons[gta][bit]; bit++) {
+		if ((*gstatus4_mapped) & (1 << bit))
+			end += sprintf(end, "* %s\n", resume_reasons[gta][bit]);
+		else
+			end += sprintf(end, "  %s\n", resume_reasons[gta][bit]);
+	}
+
+	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");
+
+	gstatus4_mapped = ioremap(0x560000BC /* GSTATUS4 */, 0x4);
+	if (!gstatus4_mapped) {
+		dev_err(&pdev->dev, "failed to ioremap() memory region\n");
+		return -EINVAL;
+	}
+
+	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");
-- 
1.7.3.1