path: root/target/linux/s3c24xx/patches-2.6.26/1043-s3c2410-qt2410-buttons.patch.patch

From a63a227ece28df06d4c8f04eec51c7649ef28aea Mon Sep 17 00:00:00 2001
From: mokopatches <mokopatches@openmoko.org>
Date: Fri, 25 Jul 2008 22:21:22 +0100
Subject: [PATCH] s3c2410-qt2410-buttons.patch

---
 arch/arm/mach-s3c2410/mach-qt2410.c |   18 +++
 drivers/input/keyboard/Kconfig      |    5 +
 drivers/input/keyboard/Makefile     |    1 +
 drivers/input/keyboard/qt2410kbd.c  |  233 +++++++++++++++++++++++++++++++++++
 4 files changed, 257 insertions(+), 0 deletions(-)
 create mode 100644 drivers/input/keyboard/qt2410kbd.c

diff --git a/arch/arm/mach-s3c2410/mach-qt2410.c b/arch/arm/mach-s3c2410/mach-qt2410.c
index 6f7b56d..daf94cd 100644
--- a/arch/arm/mach-s3c2410/mach-qt2410.c
+++ b/arch/arm/mach-s3c2410/mach-qt2410.c
@@ -321,6 +321,24 @@ static int __init qt2410_tft_setup(char *str)
 
 __setup("tft=", qt2410_tft_setup);
 
+static struct resource qt2410_button_resources[] = {
+	[0] = {
+		.start = S3C2410_GPF0,
+		.end   = S3C2410_GPF0,
+	},
+	[1] = {
+		.start = S3C2410_GPF2,
+		.end   = S3C2410_GPF2,
+	},
+};
+
+struct platform_device qt2410_button_dev = {
+	.name		="qt2410-button",
+	.num_resources	= ARRAY_SIZE(qt2410_button_resources),
+	.resource	= qt2410_button_resources,
+};
+
+
 static void __init qt2410_map_io(void)
 {
 	s3c24xx_init_io(qt2410_iodesc, ARRAY_SIZE(qt2410_iodesc));
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index b8ecca9..bc7aac3 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -334,5 +334,10 @@ config KEYBOARD_NEO1973
 	  To compile this driver as a module, choose M here: the
 	  module will be called neo1973kbd.
 
+config KEYBOARD_QT2410
+	tristate "QT2410 buttons"
+	depends on MACH_QT2410
+	default y
+
 
 endif
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index b3aa339..63a8972 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_KEYBOARD_NEWTON)		+= newtonkbd.o
 obj-$(CONFIG_KEYBOARD_STOWAWAY)		+= stowaway.o
 obj-$(CONFIG_KEYBOARD_CORGI)		+= corgikbd.o
 obj-$(CONFIG_KEYBOARD_NEO1973)		+= neo1973kbd.o
+obj-$(CONFIG_KEYBOARD_QT2410)		+= qt2410kbd.o
 obj-$(CONFIG_KEYBOARD_SPITZ)		+= spitzkbd.o
 obj-$(CONFIG_KEYBOARD_TOSA)		+= tosakbd.o
 obj-$(CONFIG_KEYBOARD_HIL)		+= hil_kbd.o
diff --git a/drivers/input/keyboard/qt2410kbd.c b/drivers/input/keyboard/qt2410kbd.c
new file mode 100644
index 0000000..4d497a3
--- /dev/null
+++ b/drivers/input/keyboard/qt2410kbd.c
@@ -0,0 +1,233 @@
+/*
+ * Keyboard driver for Armzone QT2410
+ *
+ * (C) 2006 by OpenMoko, Inc.
+ * Author: Harald Welte <laforge@openmoko.org>
+ * 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 version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+#include <asm/hardware.h>
+#include <asm/arch/gta01.h>
+
+struct gta01kbd {
+	struct input_dev *input;
+	unsigned int suspended;
+	unsigned long suspend_jiffies;
+};
+
+static irqreturn_t gta01kbd_interrupt(int irq, void *dev_id)
+{
+	struct gta01kbd *gta01kbd_data = dev_id;
+
+	/* FIXME: use GPIO from platform_dev resources */
+	if (s3c2410_gpio_getpin(S3C2410_GPF0))
+		input_report_key(gta01kbd_data->input, KEY_PHONE, 1);
+	else
+		input_report_key(gta01kbd_data->input, KEY_PHONE, 0);
+
+	input_sync(gta01kbd_data->input);
+
+	return IRQ_HANDLED;
+}
+
+
+#ifdef CONFIG_PM
+static int gta01kbd_suspend(struct platform_device *dev, pm_message_t state)
+{
+	struct gta01kbd *gta01kbd = platform_get_drvdata(dev);
+
+	gta01kbd->suspended = 1;
+
+	return 0;
+}
+
+static int gta01kbd_resume(struct platform_device *dev)
+{
+	struct gta01kbd *gta01kbd = platform_get_drvdata(dev);
+
+	gta01kbd->suspended = 0;
+
+	return 0;
+}
+#else
+#define gta01kbd_suspend	NULL
+#define gta01kbd_resume		NULL
+#endif
+
+static int gta01kbd_probe(struct platform_device *pdev)
+{
+	struct gta01kbd *gta01kbd;
+	struct input_dev *input_dev;
+	int irq_911;
+	int rc = 0;
+
+	gta01kbd = kzalloc(sizeof(struct gta01kbd), GFP_KERNEL);
+	if (!gta01kbd) {
+		rc = -ENOMEM;
+		goto bail;
+	}
+	input_dev = input_allocate_device();
+	if (!gta01kbd || !input_dev) {
+		rc = -ENOMEM;
+		goto bail_free;
+	}
+
+	if (pdev->resource[0].flags != 0) {\
+		rc = -EINVAL;
+		goto bail_free_dev;
+	}
+
+	irq_911 = s3c2410_gpio_getirq(pdev->resource[0].start);
+	if (irq_911 < 0) {
+		rc = -EINVAL;
+		goto bail_free_dev;
+	}
+
+	platform_set_drvdata(pdev, gta01kbd);
+
+	gta01kbd->input = input_dev;
+
+#if 0
+	spin_lock_init(&gta01kbd->lock);
+	/* Init Keyboard rescan timer */
+	init_timer(&corgikbd->timer);
+	corgikbd->timer.function = corgikbd_timer_callback;
+	corgikbd->timer.data = (unsigned long) corgikbd;
+
+	/* Init Hinge Timer */
+	init_timer(&corgikbd->htimer);
+	corgikbd->htimer.function = corgikbd_hinge_timer;
+	corgikbd->htimer.data = (unsigned long) corgikbd;
+
+	corgikbd->suspend_jiffies=jiffies;
+
+	memcpy(corgikbd->keycode, corgikbd_keycode, sizeof(corgikbd->keycode));
+#endif
+
+	input_dev->name = "QT2410 Buttons";
+	input_dev->phys = "qt2410kbd/input0";
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->id.vendor = 0x0001;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0100;
+	input_dev->cdev.dev = &pdev->dev;
+	input_dev->private = gta01kbd;
+
+	input_dev->evbit[0] = BIT(EV_KEY);
+#if 0
+	input_dev->keycode = gta01kbd->keycode;
+	input_dev->keycodesize = sizeof(unsigned char);
+	input_dev->keycodemax = ARRAY_SIZE(corgikbd_keycode);
+
+	for (i = 0; i < ARRAY_SIZE(corgikbd_keycode); i++)
+		set_bit(corgikbd->keycode[i], input_dev->keybit);
+	clear_bit(0, input_dev->keybit);
+	set_bit(SW_LID, input_dev->swbit);
+	set_bit(SW_TABLET_MODE, input_dev->swbit);
+	set_bit(SW_HEADPHONE_INSERT, input_dev->swbit);
+#endif
+
+	rc = input_register_device(gta01kbd->input);
+	if (rc)
+		goto bail_free_dev;
+
+	s3c2410_gpio_cfgpin(S3C2410_GPF0, S3C2410_GPF0_EINT0);
+	if (request_irq(irq_911, gta01kbd_interrupt,
+			IRQF_DISABLED | IRQF_TRIGGER_RISING |
+			IRQF_TRIGGER_FALLING, "qt2410kbd_eint0", gta01kbd))
+		printk(KERN_WARNING "gta01kbd: Can't get IRQ\n");
+	enable_irq_wake(irq_911);
+
+	/* FIXME: headphone insert */
+
+#if 0
+	mod_timer(&corgikbd->htimer, jiffies + msecs_to_jiffies(HINGE_SCAN_INTERVAL));
+
+	/* Setup sense interrupts - RisingEdge Detect, sense lines as inputs */
+	for (i = 0; i < CORGI_KEY_SENSE_NUM; i++) {
+		pxa_gpio_mode(CORGI_GPIO_KEY_SENSE(i) | GPIO_IN);
+		if (request_irq(CORGI_IRQ_GPIO_KEY_SENSE(i), corgikbd_interrupt,
+				SA_INTERRUPT | SA_TRIGGER_RISING,
+				"corgikbd", corgikbd))
+			printk(KERN_WARNING "corgikbd: Can't get IRQ: %d!\n", i);
+	}
+
+	/* Set Strobe lines as outputs - set high */
+	for (i = 0; i < CORGI_KEY_STROBE_NUM; i++)
+		pxa_gpio_mode(CORGI_GPIO_KEY_STROBE(i) | GPIO_OUT | GPIO_DFLT_HIGH);
+
+	/* Setup the headphone jack as an input */
+	pxa_gpio_mode(CORGI_GPIO_AK_INT | GPIO_IN);
+#endif
+
+	return 0;
+
+bail_free_dev:
+	input_free_device(input_dev);
+bail_free:
+	kfree(gta01kbd);
+bail:
+	return rc;
+}
+
+static int gta01kbd_remove(struct platform_device *pdev)
+{
+	struct gta01kbd *gta01kbd = platform_get_drvdata(pdev);
+
+	free_irq(s3c2410_gpio_getirq(pdev->resource[0].start), gta01kbd);
+#if 0
+	int i;
+
+	for (i = 0; i < CORGI_KEY_SENSE_NUM; i++)
+		free_irq(CORGI_IRQ_GPIO_KEY_SENSE(i), corgikbd);
+
+	del_timer_sync(&corgikbd->htimer);
+	del_timer_sync(&corgikbd->timer);
+#endif
+	input_unregister_device(gta01kbd->input);
+
+	kfree(gta01kbd);
+
+	return 0;
+}
+
+static struct platform_driver gta01kbd_driver = {
+	.probe		= gta01kbd_probe,
+	.remove		= gta01kbd_remove,
+	.suspend	= gta01kbd_suspend,
+	.resume		= gta01kbd_resume,
+	.driver		= {
+		.name	= "qt2410-button",
+	},
+};
+
+static int __devinit gta01kbd_init(void)
+{
+	return platform_driver_register(&gta01kbd_driver);
+}
+
+static void __exit gta01kbd_exit(void)
+{
+	platform_driver_unregister(&gta01kbd_driver);
+}
+
+module_init(gta01kbd_init);
+module_exit(gta01kbd_exit);
+
+MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
+MODULE_DESCRIPTION("Armzone QT2410 Buttons Driver");
+MODULE_LICENSE("GPL");
-- 
1.5.6.3