On Wed, Mar 04, 2015 at 01:45:27PM +0100, Linus Walleij wrote:
> 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>
Applied with minor edits.
Thanks!
> ---
> 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
>
--
Dmitry
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