Add Retu power button driver. Cc: linux-input@xxxxxxxxxxxxxxx Signed-off-by: Aaro Koskinen <aaro.koskinen@xxxxxx> --- drivers/input/misc/Kconfig | 10 +++ drivers/input/misc/Makefile | 1 + drivers/input/misc/retu-pwrbutton.c | 127 +++++++++++++++++++++++++++++++++++ 3 files changed, 138 insertions(+), 0 deletions(-) create mode 100644 drivers/input/misc/retu-pwrbutton.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 7c0f1ec..e5be189 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -367,6 +367,16 @@ config INPUT_CM109 To compile this driver as a module, choose M here: the module will be called cm109. +config INPUT_RETU_PWRBUTTON + tristate "Retu Power button Driver" + depends on MFD_RETU + help + Say Y here if you want to enable power key reporting via the + Retu chips found in Nokia Internet Tablets (770, N800, N810). + + To compile this driver as a module, choose M here. The module will + be called retu-pwrbutton. + config INPUT_TWL4030_PWRBUTTON tristate "TWL4030 Power button Driver" depends on TWL4030_CORE diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 83fe6f5..4fbee0d 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -45,6 +45,7 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o obj-$(CONFIG_INPUT_POWERMATE) += powermate.o obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o +obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o diff --git a/drivers/input/misc/retu-pwrbutton.c b/drivers/input/misc/retu-pwrbutton.c new file mode 100644 index 0000000..f802d4d --- /dev/null +++ b/drivers/input/misc/retu-pwrbutton.c @@ -0,0 +1,127 @@ +/* + * Retu power button driver. + * + * Copyright (C) 2004-2010 Nokia Corporation + * + * Original code written by Ari Saastamoinen, Juha Yrjölä and Felipe Balbi. + * Converted to use to use Retu MFD driver by Aaro Koskinen. + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/irq.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/input.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mfd/retu.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> + +#define RETU_STATUS_PWRONX (1 << 5) + +struct retu_pwrbutton { + struct input_dev *idev; + struct retu_dev *rdev; + struct device *dev; + bool pressed; + int irq; +}; + +static irqreturn_t retu_pwrbutton_irq(int irq, void *_pwr) +{ + struct retu_pwrbutton *pwr = _pwr; + bool state; + + state = !(retu_read(pwr->rdev, RETU_REG_STATUS) & RETU_STATUS_PWRONX); + + if (pwr->pressed != state) { + input_report_key(pwr->idev, KEY_POWER, state); + input_sync(pwr->idev); + pwr->pressed = state; + } + + return IRQ_HANDLED; +} + +static int __devinit retu_pwrbutton_probe(struct platform_device *pdev) +{ + struct retu_dev *rdev = dev_get_drvdata(pdev->dev.parent); + struct retu_pwrbutton *pwr; + int ret; + + pwr = kzalloc(sizeof(*pwr), GFP_KERNEL); + if (!pwr) + return -ENOMEM; + + pwr->rdev = rdev; + pwr->dev = &pdev->dev; + pwr->irq = platform_get_irq(pdev, 0); + platform_set_drvdata(pdev, pwr); + + ret = request_threaded_irq(pwr->irq, NULL, retu_pwrbutton_irq, 0, + "retu-pwrbutton", pwr); + if (ret < 0) + goto error_irq; + + pwr->idev = input_allocate_device(); + if (!pwr->idev) { + ret = -ENOMEM; + goto error_input; + } + + pwr->idev->evbit[0] = BIT_MASK(EV_KEY); + pwr->idev->keybit[BIT_WORD(KEY_POWER)] = BIT_MASK(KEY_POWER); + pwr->idev->name = "retu-pwrbutton"; + + ret = input_register_device(pwr->idev); + if (ret < 0) + goto error_reg; + + return 0; + +error_reg: + input_free_device(pwr->idev); +error_input: + free_irq(pwr->irq, pwr); +error_irq: + kfree(pwr); + return ret; +} + +static int __devexit retu_pwrbutton_remove(struct platform_device *pdev) +{ + struct retu_pwrbutton *pwr = platform_get_drvdata(pdev); + + free_irq(pwr->irq, pwr); + input_unregister_device(pwr->idev); + input_free_device(pwr->idev); + kfree(pwr); + + return 0; +} + +static struct platform_driver retu_pwrbutton_driver = { + .probe = retu_pwrbutton_probe, + .remove = __devexit_p(retu_pwrbutton_remove), + .driver = { + .name = "retu-pwrbutton", + }, +}; +module_platform_driver(retu_pwrbutton_driver); + +MODULE_ALIAS("platform:retu-pwrbutton"); +MODULE_DESCRIPTION("Retu Power Button"); +MODULE_AUTHOR("Ari Saastamoinen"); +MODULE_AUTHOR("Felipe Balbi"); +MODULE_AUTHOR("Aaro Koskinen <aaro.koskinen@xxxxxx>"); +MODULE_LICENSE("GPL"); -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html