Message-ID: <AANLkTikYMEnNWCjCkFzhsYajsY8ypNRj1935G3VbZEg5@mail.gmail.com>
Date:	Wed, 14 Jul 2010 10:49:50 +0100
From:	Dajun Chen <dajun.chen@...il.com>
To:	dmitry.torokhov@...il.com, dtor@...l.ru
Cc:	linux-kernel@...r.kernel.org
Subject: [RFC][PATCH 11/11] INPUT/MISC:ONKEY module of DA9052 PMIC device 
	driver (RESEND)

Initial work of the onkey module of the device driver for DA9052 PMIC
device from Dialog Semiconductor.

The ONKEY feature for DA9052 Animal board has been supported in this
new driver patch

Linux Kernel Version: 2.6.34

Signed-off-by: D. Chen <dchen@...semi.com>
---
diff -urpN linux-2.6.34/drivers/input/misc/da9052_onkey.c
linux-2.6.34_test/drivers/input/misc/da9052_onkey.c
--- linux-2.6.34/drivers/input/misc/da9052_onkey.c	1970-01-01
05:00:00.000000000 +0500
+++ linux-2.6.34_test/drivers/input/misc/da9052_onkey.c	2010-07-13
18:11:26.000000000 +0500
@@ -0,0 +1,132 @@
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+
+#include <linux/mfd/da9052/da9052.h>
+#include <linux/mfd/da9052/reg.h>
+
+#define DRIVER_NAME "da9052-onkey"
+
+struct da9052_onkey_data {
+	struct da9052 *da9052;
+	struct da9052_eh_nb eh_data;
+	struct input_dev *input;
+};
+
+static void da9052_onkey_report_event(struct da9052_eh_nb *eh_data,
+						unsigned int event)
+{
+	struct da9052_onkey_data *da9052_onkey =
+		container_of(eh_data, struct da9052_onkey_data, eh_data);
+	struct da9052_ssc_msg msg;
+	unsigned int ret;
+
+	/* Read the Evnet Register */
+	msg.addr = DA9052_EVENTB_REG;
+	da9052_lock(da9052_onkey->da9052);
+	ret = da9052_onkey->da9052->read(da9052_onkey->da9052, &msg);
+	if (ret) {
+		da9052_unlock(da9052_onkey->da9052);
+		return;
+	}
+	da9052_unlock(da9052_onkey->da9052);
+	msg.data = msg.data & DA9052_EVENTB_ENONKEY;
+
+	input_report_key(da9052_onkey->input, KEY_POWER, msg.data);
+	input_sync(da9052_onkey->input);
+}
+
+static int __devinit da9052_onkey_probe(struct platform_device *pdev)
+{
+	struct da9052_onkey_data *da9052_onkey;
+	int error;
+
+	da9052_onkey = kzalloc(sizeof(struct da9052_onkey_data), GFP_KERNEL);
+	da9052_onkey->input = input_allocate_device();
+	if (!da9052_onkey) {
+		dev_err(&pdev->dev, "failed to allocate data device\n");
+		error = -ENOMEM;
+		goto fail1;
+	}
+	da9052_onkey->da9052 = dev_get_drvdata(pdev->dev.parent);
+
+	if (!da9052_onkey->input) {
+		dev_err(&pdev->dev, "failed to allocate input device\n");
+		error = -ENOMEM;
+		goto fail2;
+	}
+
+	da9052_onkey->input->evbit[0] = BIT_MASK(EV_KEY);
+	da9052_onkey->input->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER);
+	da9052_onkey->input->name = "da9052-onkey";
+	da9052_onkey->input->phys = "da9052-onkey/input0";
+	da9052_onkey->input->dev.parent = &pdev->dev;
+
+	/* Set the EH structure */
+	da9052_onkey->eh_data.eve_type = ONKEY_EVE;
+	da9052_onkey->eh_data.call_back = &da9052_onkey_report_event;
+	error = da9052_onkey->da9052->register_event_notifier(
+				da9052_onkey->da9052,
+				&da9052_onkey->eh_data);
+	if (error)
+		goto fail2;
+
+	error = input_register_device(da9052_onkey->input);
+	if (error) {
+		dev_err(&pdev->dev, "Unable to register input\
+				device,error: %d\n", error);
+		goto fail3;
+	}
+
+	platform_set_drvdata(pdev, da9052_onkey);
+
+	return 0;
+
+fail3:
+	da9052_onkey->da9052->unregister_event_notifier(da9052_onkey->da9052,
+					&da9052_onkey->eh_data);
+fail2:
+	input_free_device(da9052_onkey->input);
+fail1:
+	kfree(da9052_onkey);
+	return error;
+}
+
+static int __devexit da9052_onkey_remove(struct platform_device *pdev)
+{
+	struct da9052_onkey_data *da9052_onkey = pdev->dev.platform_data;
+	da9052_onkey->da9052->unregister_event_notifier(da9052_onkey->da9052,
+					&da9052_onkey->eh_data);
+	input_unregister_device(da9052_onkey->input);
+	kfree(da9052_onkey);
+
+	return 0;
+}
+
+static struct platform_driver da9052_onkey_driver = {
+	.probe		= da9052_onkey_probe,
+	.remove		= __devexit_p(da9052_onkey_remove),
+	.driver		= {
+		.name	= "da9052-onkey",
+		.owner	= THIS_MODULE,
+	}
+};
+
+static int __init da9052_onkey_init(void)
+{
+	return platform_driver_register(&da9052_onkey_driver);
+}
+
+static void __exit da9052_onkey_exit(void)
+{
+	platform_driver_unregister(&da9052_onkey_driver);
+}
+
+module_init(da9052_onkey_init);
+module_exit(da9052_onkey_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Dajun Chen <dchen@...semi.com>");
+MODULE_DESCRIPTION("Onkey driver for DA9052");
+MODULE_ALIAS("platform:" DRIVER_NAME);
diff -urpN linux-2.6.34/drivers/input/misc/Kconfig
linux-2.6.34_test/drivers/input/misc/Kconfig
--- linux-2.6.34/drivers/input/misc/Kconfig	2010-05-17 02:17:36.000000000 +0500
+++ linux-2.6.34_test/drivers/input/misc/Kconfig	2010-07-13
18:11:40.000000000 +0500
@@ -340,4 +340,14 @@ config INPUT_PCAP
 	  To compile this driver as a module, choose M here: the
 	  module will be called pcap_keys.

+config INPUT_DA9052_ONKEY
+	tristate "INPUT_DA9052_ONKEY support"
+	depends on PMIC_DA9052
+	help
+	  Support the ONKEY of Dialog DA9052 PMICs as an input device
+	  reporting power button status.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called da9052_onkey.
+
 endif
diff -urpN linux-2.6.34/drivers/input/misc/Makefile
linux-2.6.34_test/drivers/input/misc/Makefile
--- linux-2.6.34/drivers/input/misc/Makefile	2010-05-17 02:17:36.000000000 +0500
+++ linux-2.6.34_test/drivers/input/misc/Makefile	2010-07-13
18:11:34.000000000 +0500
@@ -32,4 +32,5 @@ obj-$(CONFIG_INPUT_WINBOND_CIR)		+= winb
 obj-$(CONFIG_INPUT_WISTRON_BTNS)	+= wistron_btns.o
 obj-$(CONFIG_INPUT_WM831X_ON)		+= wm831x-on.o
 obj-$(CONFIG_INPUT_YEALINK)		+= yealink.o
+obj-$(CONFIG_INPUT_DA9052_ONKEY)		+= da9052_onkey.o
--
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