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    Subject[PATCH V2 6/7] input: PCF50633 input driver
    Date
    Signed-off-by: Balaji Rao <balajirrao@openmoko.org>
    Cc: Andy Green <andy@openmoko.com>
    Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
    ---
    drivers/input/misc/Kconfig | 7 ++
    drivers/input/misc/Makefile | 1
    drivers/input/misc/pcf50633-input.c | 132 +++++++++++++++++++++++++++++++++++
    3 files changed, 140 insertions(+), 0 deletions(-)
    create mode 100644 drivers/input/misc/pcf50633-input.c

    diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
    index 199055d..67e5553 100644
    --- a/drivers/input/misc/Kconfig
    +++ b/drivers/input/misc/Kconfig
    @@ -220,4 +220,11 @@ config HP_SDC_RTC
    Say Y here if you want to support the built-in real time clock
    of the HP SDC controller.

    +config INPUT_PCF50633_PMU
    + tristate "PCF50633 PMU events"
    + depends on MFD_PCF50633
    + help
    + Say Y to include support for delivering PMU events via input
    + layer on NXP PCF50633.
    +
    endif
    diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
    index d7db2ae..bb62e6e 100644
    --- a/drivers/input/misc/Makefile
    +++ b/drivers/input/misc/Makefile
    @@ -21,3 +21,4 @@ obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
    obj-$(CONFIG_INPUT_UINPUT) += uinput.o
    obj-$(CONFIG_INPUT_APANEL) += apanel.o
    obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
    +obj-$(CONFIG_INPUT_PCF50633_PMU) += pcf50633-input.o
    diff --git a/drivers/input/misc/pcf50633-input.c b/drivers/input/misc/pcf50633-input.c
    new file mode 100644
    index 0000000..70e36fd
    --- /dev/null
    +++ b/drivers/input/misc/pcf50633-input.c
    @@ -0,0 +1,132 @@
    +/* NXP PCF50633 Input Driver
    + *
    + * (C) 2006-2008 by Openmoko, Inc.
    + * Author: Balaji Rao <balajirrao@openmoko.org>
    + * All rights reserved.
    + *
    + * Broken down from monstrous PCF50633 driver mainly by
    + * Harald Welte, Andy Green and Werner Almesberger
    + *
    + * This program is free software; you can redistribute it and/or modify it
    + * under the terms of the GNU General Public License as published by the
    + * Free Software Foundation; either version 2 of the License, or (at your
    + * option) any later version.
    + *
    + */
    +
    +#include <linux/kernel.h>
    +#include <linux/module.h>
    +#include <linux/init.h>
    +#include <linux/device.h>
    +#include <linux/platform_device.h>
    +#include <linux/input.h>
    +
    +#include <linux/mfd/pcf50633/core.h>
    +
    +#define PCF50633_OOCSTAT_ONKEY 0x01
    +#define PCF50633_REG_OOCSTAT 0x12
    +#define PCF50633_REG_OOCMODE 0x10
    +
    +struct pcf50633_input {
    + struct pcf50633 *pcf;
    + struct input_dev *input_dev;
    +};
    +
    +static void
    +pcf50633_input_irq(int irq, void *data)
    +{
    + struct pcf50633_input *input;
    + int onkey_released;
    +
    + input = data;
    +
    + /* We report only one event depending on the key press status */
    + onkey_released = pcf50633_reg_read(input->pcf, PCF50633_REG_OOCSTAT)
    + & PCF50633_OOCSTAT_ONKEY;
    +
    + if (irq == PCF50633_IRQ_ONKEYF && !onkey_released)
    + input_report_key(input->input_dev, KEY_POWER, 1);
    + else if (irq == PCF50633_IRQ_ONKEYR && onkey_released)
    + input_report_key(input->input_dev, KEY_POWER, 0);
    +
    + input_sync(input->input_dev);
    +}
    +
    +static int __devinit pcf50633_input_probe(struct platform_device *pdev)
    +{
    + struct pcf50633_input *input;
    + struct pcf50633_subdev_pdata *pdata = pdev->dev.platform_data;
    + struct input_dev *input_dev;
    + int ret;
    +
    +
    + input = kzalloc(sizeof(*input), GFP_KERNEL);
    + if (!input)
    + return -ENOMEM;
    +
    + input_dev = input_allocate_device();
    + if (!input_dev) {
    + kfree(input);
    + return -ENOMEM;
    + }
    +
    + platform_set_drvdata(pdev, input);
    + input->pcf = pdata->pcf;
    + input->input_dev = input_dev;
    +
    + input_dev->name = "PCF50633 PMU events";
    + input_dev->id.bustype = BUS_I2C;
    + input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_PWR);
    + set_bit(KEY_POWER, input_dev->keybit);
    +
    + ret = input_register_device(input_dev);
    + if (ret) {
    + input_free_device(input_dev);
    + kfree(input);
    + return ret;
    + }
    + pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYR,
    + pcf50633_input_irq, input);
    + pcf50633_register_irq(pdata->pcf, PCF50633_IRQ_ONKEYF,
    + pcf50633_input_irq, input);
    +
    + return 0;
    +}
    +
    +static int __devexit pcf50633_input_remove(struct platform_device *pdev)
    +{
    + struct pcf50633_input *input = platform_get_drvdata(pdev);
    +
    + input_unregister_device(input->input_dev);
    + pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYR);
    + pcf50633_free_irq(input->pcf, PCF50633_IRQ_ONKEYF);
    +
    + kfree(input);
    +
    + return 0;
    +}
    +
    +static struct platform_driver pcf50633_input_driver = {
    + .driver = {
    + .name = "pcf50633-input",
    + },
    + .probe = pcf50633_input_probe,
    + .remove = __devexit_p(pcf50633_input_remove),
    +};
    +
    +static int __init pcf50633_input_init(void)
    +{
    + return platform_driver_register(&pcf50633_input_driver);
    +}
    +module_init(pcf50633_input_init);
    +
    +static void __exit pcf50633_input_exit(void)
    +{
    + platform_driver_unregister(&pcf50633_input_driver);
    +}
    +module_exit(pcf50633_input_exit);
    +
    +MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
    +MODULE_DESCRIPTION("PCF50633 input driver");
    +MODULE_LICENSE("GPL");
    +MODULE_ALIAS("platform:pcf50633-input");


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