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@xxxxxxxxxx>
Signed-off-by: Dmitry Artamonow <mad_soft@xxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
ChangeLog v1->v2:
- Improve KConfig help text for module building
- Delete useless <linux/version.h> include
- Don't clamp key up/down to bool, core will handle it
- Staticize keycodes
- Split out open/close operations
- Use devm_input_allocate_device()
- Copy keycodes to state container struct
- Set keycodesize and keycodemax
- Use SIMPLE_DEV_PM_OPS()
---
drivers/input/keyboard/Kconfig | 10 ++
drivers/input/keyboard/Makefile | 1 +
drivers/input/keyboard/ipaq-micro-keys.c | 166 +++++++++++++++++++++++++++++++
3 files changed, 177 insertions(+)
create mode 100644 drivers/input/keyboard/ipaq-micro-keys.c
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index a89ba7cb96f1..35cf866617d2 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -588,6 +588,16 @@ 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
+ Say Y to enable support for the buttons attached to
+ Micro peripheral controller on iPAQ h3100/h3600/h3700
+
+ To compile this driver as a module, choose M here: the
+ module will be called ipaq-micro-keys.
+
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 470767884bd8..a171b7119674 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -23,6 +23,7 @@ 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..4226354f25e5
--- /dev/null
+++ b/drivers/input/keyboard/ipaq-micro-keys.c
@@ -0,0 +1,166 @@
+/*
+ * 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@xxxxxxxxxx>
+ * Author : Linus Walleij <linus.walleij@xxxxxxxxxx>
+ *
+ */
+#include <linux/module.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;
+ u16 *codes;
+};
+
+static const u16 micro_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];
+ key = 0x7f & msg[0];
+
+ if (key < ARRAY_SIZE(micro_keycodes)) {
+ input_report_key(keys->input, keys->codes[key], down);
+ input_sync(keys->input);
+ }
+}
+
+static int micro_key_open(struct input_dev *input)
+{
+ struct ipaq_micro_keys *keys = input_get_drvdata(input);
+
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = micro_key_receive;
+ keys->micro->key_data = keys;
+ spin_unlock(&keys->micro->lock);
+
+ return 0;
+}
+
+static void micro_key_close(struct input_dev *input)
+{
+ struct ipaq_micro_keys *keys = input_get_drvdata(input);
+
+ spin_lock(&keys->micro->lock);
+ keys->micro->key = NULL;
+ keys->micro->key_data = NULL;
+ spin_unlock(&keys->micro->lock);
+}
+
+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 = devm_input_allocate_device(&pdev->dev);
+ if (!keys->input)
+ return -ENOMEM;
+
+ keys->input->keycodesize = sizeof(micro_keycodes[0]);
+ keys->input->keycodemax = ARRAY_SIZE(micro_keycodes);
+ keys->codes = devm_kmemdup(&pdev->dev, micro_keycodes,
+ keys->input->keycodesize * keys->input->keycodemax,
+ GFP_KERNEL);
+ keys->input->keycode = keys->codes;
+
+ 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(micro_keycodes); i++) {
+ set_bit(micro_keycodes[i], keys->input->keybit);
+ }
+ keys->input->name = "h3600 micro keys";
+ keys->input->open = micro_key_open;
+ keys->input->close = micro_key_close;
+ input_set_drvdata(keys->input, keys);
+
+ ret = input_register_device(keys->input);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, keys);
+ 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);
+
+ return 0;
+}
+
+static int __maybe_unused 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 __maybe_unused 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;
+}
+
+SIMPLE_DEV_PM_OPS(micro_key_dev_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");
--
1.9.3
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