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From 96394b690b27fd3b4175b290a179e5e4e9138085 Mon Sep 17 00:00:00 2001
From: Dmitry Artamonow <mad_soft@inbox.ru>
Date: Sat, 21 Mar 2009 16:22:16 +0300
Subject: [PATCH 3/7] input: driver for microcontroller keys on the iPaq h3xxx
This adds a key input driver for the keys found on the h3xxx
iPAQ series.
Based on a driver from handhelds.org 2.6.21 kernel, written
by Alessandro GARDICH.
Signed-off-by: Alessandro GARDICH <gremlin@gremlin.it>
Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/input/keyboard/Kconfig | 7 ++
drivers/input/keyboard/Makefile | 1 +
drivers/input/keyboard/ipaq-micro-keys.c | 148 +++++++++++++++++++++++++++++++
3 files changed, 156 insertions(+)
create mode 100644 drivers/input/keyboard/ipaq-micro-keys.c
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index a673c9f3a0b9..8d4892dfa6e2 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -554,6 +554,13 @@ config KEYBOARD_DAVINCI
To compile this driver as a module, choose M here: the
module will be called davinci_keyscan.
+config KEYBOARD_IPAQ_MICRO
+ tristate "Buttons on Micro SoC (iPaq h3100,h3600,h3700)"
+ depends on MFD_IPAQ_MICRO
+ help
+ This enables support for the buttons attached to
+ Micro peripheral controller on iPAQ h3100/h3600/h3700
+
config KEYBOARD_OMAP
tristate "TI OMAP keypad support"
depends on ARCH_OMAP1
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index a699b6172303..e776af737804 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_KEYBOARD_TCA6416) += tca6416-keypad.o
obj-$(CONFIG_KEYBOARD_TCA8418) += tca8418_keypad.o
obj-$(CONFIG_KEYBOARD_HIL) += hil_kbd.o
obj-$(CONFIG_KEYBOARD_HIL_OLD) += hilkbd.o
+obj-$(CONFIG_KEYBOARD_IPAQ_MICRO) += ipaq-micro-keys.o
obj-$(CONFIG_KEYBOARD_IMX) += imx_keypad.o
obj-$(CONFIG_KEYBOARD_HP6XX) += jornada680_kbd.o
obj-$(CONFIG_KEYBOARD_HP7XX) += jornada720_kbd.o
diff --git a/drivers/input/keyboard/ipaq-micro-keys.c b/drivers/input/keyboard/ipaq-micro-keys.c
new file mode 100644
index 000000000000..7ca8b738cc73
--- /dev/null
+++ b/drivers/input/keyboard/ipaq-micro-keys.c
@@ -0,0 +1,148 @@
+/*
+ * 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.
+ *
+ * h3600 atmel micro companion support, key subdevice
+ * based on previous kernel 2.4 version
+ * Author : Alessandro Gardich <gremlin@gremlin.it>
+ * Author : Linus Walleij <linus.walleij@linaro.org>
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/version.h>
+
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/interrupt.h>
+#include <linux/sched.h>
+#include <linux/pm.h>
+#include <linux/sysctl.h>
+#include <linux/proc_fs.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/ipaq-micro.h>
+
+struct ipaq_micro_keys {
+ struct ipaq_micro *micro;
+ struct input_dev *input;
+};
+
+static int keycodes[] = {
+ KEY_RECORD, /* 1: Record button */
+ KEY_CALENDAR, /* 2: Calendar */
+ KEY_ADDRESSBOOK, /* 3: Contacts (looks like Outlook) */
+ KEY_MAIL, /* 4: Envelope (Q on older iPAQs) */
+ KEY_HOMEPAGE, /* 5: Start (looks like swoopy arrow) */
+ KEY_UP, /* 6: Up */
+ KEY_RIGHT, /* 7: Right */
+ KEY_LEFT, /* 8: Left */
+ KEY_DOWN, /* 9: Down */
+};
+
+static void micro_key_receive(void *data, int len, unsigned char *msg)
+{
+ struct ipaq_micro_keys *keys = data;
+ int key, down;
+
+ down = (0x80 & msg[0]) ? 1 : 0;
+ key = 0x7f & msg[0];
+
+ if (key < ARRAY_SIZE(keycodes)) {
+ input_report_key(keys->input, keycodes[key], down);
+ input_sync(keys->input);
+ }
+}
+
+static int micro_key_probe(struct platform_device *pdev)
+{
+ struct ipaq_micro_keys *keys;
+ int ret;
+ int i;
+
+ keys = devm_kzalloc(&pdev->dev, sizeof(*keys), GFP_KERNEL);
+ if (!keys)
+ return -ENOMEM;
+ keys->input = input_allocate_device();
+ if (!keys->input)
+ return -ENOMEM;
+ keys->micro = dev_get_drvdata(pdev->dev.parent);
+ keys->input->evbit[0] = BIT(EV_KEY);
+ set_bit(EV_KEY, keys->input->evbit);
+ for (i = 0; i < ARRAY_SIZE(keycodes); i++)
+ set_bit(keycodes[i], keys->input->keybit);
+
+ keys->input->name = "h3600 micro keys";
+
+ ret = input_register_device(keys->input);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, keys);
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = micro_key_receive;
+ keys->micro->key_data = keys;
+ spin_unlock(&keys->micro->lock);
+
+ return 0;
+}
+
+static int micro_key_remove(struct platform_device *pdev)
+{
+ struct ipaq_micro_keys *keys = platform_get_drvdata(pdev);
+
+ input_unregister_device(keys->input);
+
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = NULL;
+ keys->micro->key_data = NULL;
+ spin_unlock(&keys->micro->lock);
+
+ return 0;
+}
+
+static int micro_key_suspend(struct device *dev)
+{
+ struct ipaq_micro_keys *keys = dev_get_drvdata(dev);
+
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = NULL;
+ keys->micro->key_data = NULL;
+ spin_unlock(&keys->micro->lock);
+
+ return 0;
+}
+
+static int micro_key_resume(struct device *dev)
+{
+ struct ipaq_micro_keys *keys = dev_get_drvdata(dev);
+
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = micro_key_receive;
+ keys->micro->key_data = keys;
+ spin_unlock(&keys->micro->lock);
+
+ return 0;
+}
+
+static const struct dev_pm_ops micro_key_dev_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(micro_key_suspend, micro_key_resume)
+};
+
+struct platform_driver micro_key_device_driver = {
+ .driver = {
+ .name = "ipaq-micro-keys",
+ .pm = µ_key_dev_pm_ops,
+ },
+ .probe = micro_key_probe,
+ .remove = micro_key_remove,
+};
+module_platform_driver(micro_key_device_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("driver for iPAQ Atmel micro keys");
+MODULE_ALIAS("platform:ipaq-micro-keys");
--
1.9.0
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