On Fri, Dec 26, 2014 at 09:36:48PM -0600, Felipe Balbi wrote: > With this driver, we can report KEY_POWER on > AM437x SK. This patch has been tested with said > board. > > Signed-off-by: Felipe Balbi <balbi@xxxxxx> Applied, thank you. > --- > > Changes since v1: > - Add device tree documentation > - s/ret/error > - removed 'pressed' as input core will filter events > - use a saner name when requesting IRQ. dev_name(dev) will return > $i2c_bus_address.i2c-omap:0-0024:tps65218-pwrbutton > - remove blank line before MODULE_DEVICE_TABLE() > > .../bindings/input/tps65218-pwrbutton.txt | 17 +++ > drivers/input/misc/Kconfig | 10 ++ > drivers/input/misc/Makefile | 1 + > drivers/input/misc/tps65218-pwrbutton.c | 124 +++++++++++++++++++++ > 4 files changed, 152 insertions(+) > create mode 100644 Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt > create mode 100644 drivers/input/misc/tps65218-pwrbutton.c > > diff --git a/Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt b/Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt > new file mode 100644 > index 0000000..e30e0b9 > --- /dev/null > +++ b/Documentation/devicetree/bindings/input/tps65218-pwrbutton.txt > @@ -0,0 +1,17 @@ > +Texas Instruments TPS65218 power button > + > +This driver provides a simple power button event via an Interrupt. > + > +Required properties: > +- compatible: should be "ti,tps65218-pwrbutton" > +- interrupts: should be one of the following > + - <3 IRQ_TYPE_EDGE_BOTH>: For controllers compatible with tps65218 > + > +Example: > + > +&tps { > + power-button { > + compatible = "ti,tps65218-pwrbutton"; > + interrupts = <3 IRQ_TYPE_EDGE_BOTH>; > + }; > +}; > diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig > index 23297ab..364cfb8 100644 > --- a/drivers/input/misc/Kconfig > +++ b/drivers/input/misc/Kconfig > @@ -404,6 +404,16 @@ config INPUT_RETU_PWRBUTTON > To compile this driver as a module, choose M here. The module will > be called retu-pwrbutton. > > +config INPUT_TPS65218_PWRBUTTON > + tristate "TPS65218 Power button driver" > + depends on MFD_TPS65218 > + help > + Say Y here if you want to enable power buttong reporting for > + the TPS65218 Power Management IC device. > + > + To compile this driver as a module, choose M here. The module will > + be called tps65218-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 19c7603..a923753 100644 > --- a/drivers/input/misc/Makefile > +++ b/drivers/input/misc/Makefile > @@ -59,6 +59,7 @@ obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o > obj-$(CONFIG_INPUT_SIRFSOC_ONKEY) += sirfsoc-onkey.o > obj-$(CONFIG_INPUT_SOC_BUTTON_ARRAY) += soc_button_array.o > obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o > +obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON) += tps65218-pwrbutton.o > obj-$(CONFIG_INPUT_TWL4030_PWRBUTTON) += twl4030-pwrbutton.o > obj-$(CONFIG_INPUT_TWL4030_VIBRA) += twl4030-vibra.o > obj-$(CONFIG_INPUT_TWL6040_VIBRA) += twl6040-vibra.o > diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c > new file mode 100644 > index 0000000..2f85e2e > --- /dev/null > +++ b/drivers/input/misc/tps65218-pwrbutton.c > @@ -0,0 +1,124 @@ > +/* > + * Texas Instruments' TPS65218 Power Button Input Driver > + * > + * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com/ > + * Author: Felipe Balbi <balbi@xxxxxx> > + * > + * 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. > + * > + * This program is distributed "as is" WITHOUT ANY WARRANTY of any > + * kind, whether express or implied; without even the implied warranty > + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + */ > + > +#include <linux/init.h> > +#include <linux/input.h> > +#include <linux/interrupt.h> > +#include <linux/kernel.h> > +#include <linux/mfd/tps65218.h> > +#include <linux/module.h> > +#include <linux/of.h> > +#include <linux/platform_device.h> > +#include <linux/slab.h> > + > +struct tps65218_pwrbutton { > + struct device *dev; > + struct tps65218 *tps; > + struct input_dev *idev; > +}; > + > +static irqreturn_t tps65218_pwr_irq(int irq, void *_pwr) > +{ > + struct tps65218_pwrbutton *pwr = _pwr; > + unsigned int reg; > + int error; > + > + error = tps65218_reg_read(pwr->tps, TPS65218_REG_STATUS, ®); > + if (error) { > + dev_err(pwr->dev, "can't read register --> %d\n", error); > + goto out; > + } > + > + if (reg & TPS65218_STATUS_PB_STATE) { > + input_report_key(pwr->idev, KEY_POWER, 1); > + pm_wakeup_event(pwr->dev, 0); > + } else { > + input_report_key(pwr->idev, KEY_POWER, 0); > + } > + > + input_sync(pwr->idev); > + > +out: > + return IRQ_HANDLED; > +} > + > +static int tps65218_pwron_probe(struct platform_device *pdev) > +{ > + struct tps65218 *tps = dev_get_drvdata(pdev->dev.parent); > + struct device *dev = &pdev->dev; > + struct tps65218_pwrbutton *pwr; > + struct input_dev *idev; > + int error; > + int irq; > + > + pwr = devm_kzalloc(dev, sizeof(*pwr), GFP_KERNEL); > + if (!pwr) > + return -ENOMEM; > + > + idev = devm_input_allocate_device(dev); > + if (!idev) > + return -ENOMEM; > + > + idev->name = "tps65218_pwrbutton"; > + idev->phys = "tps65218_pwrbutton/input0"; > + idev->dev.parent = dev; > + idev->id.bustype = BUS_I2C; > + > + input_set_capability(idev, EV_KEY, KEY_POWER); > + > + pwr->tps = tps; > + pwr->dev = dev; > + pwr->idev = idev; > + platform_set_drvdata(pdev, pwr); > + device_init_wakeup(dev, true); > + > + irq = platform_get_irq(pdev, 0); > + error = devm_request_threaded_irq(dev, irq, NULL, tps65218_pwr_irq, > + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT, > + "tps65218-pwrbutton", pwr); > + if (error) { > + dev_err(dev, "failed to request IRQ #%d --> %d\n", > + irq, error); > + return error; > + } > + > + error= input_register_device(idev); > + if (error) { > + dev_err(dev, "Can't register power button --> %d\n", error); > + return error; > + } > + > + return 0; > +} > + > +static struct of_device_id of_tps65218_pwr_match[] = { > + { .compatible = "ti,tps65218-pwrbutton" }, > + { }, > +}; > +MODULE_DEVICE_TABLE(of, of_tps65218_pwr_match); > + > +static struct platform_driver tps65218_pwron_driver = { > + .probe = tps65218_pwron_probe, > + .driver = { > + .name = "tps65218_pwrbutton", > + .of_match_table = of_tps65218_pwr_match, > + }, > +}; > +module_platform_driver(tps65218_pwron_driver); > + > +MODULE_DESCRIPTION("TPS65218 Power Button"); > +MODULE_LICENSE("GPL v2"); > +MODULE_AUTHOR("Felipe Balbi <balbi@xxxxxx>"); > -- > 2.2.0 > -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html