mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
a205425658
include/linux/i2c is not for client devices. Move the header file to a more appropriate location. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Acked-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Thierry Reding <thierry.reding@gmail.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/**
|
|
* twl4030-pwrbutton.c - TWL4030 Power Button Input Driver
|
|
*
|
|
* Copyright (C) 2008-2009 Nokia Corporation
|
|
*
|
|
* Written by Peter De Schrijver <peter.de-schrijver@nokia.com>
|
|
* Several fixes by Felipe Balbi <felipe.balbi@nokia.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/input.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mfd/twl.h>
|
|
|
|
#define PWR_PWRON_IRQ (1 << 0)
|
|
|
|
#define STS_HW_CONDITIONS 0xf
|
|
|
|
static irqreturn_t powerbutton_irq(int irq, void *_pwr)
|
|
{
|
|
struct input_dev *pwr = _pwr;
|
|
int err;
|
|
u8 value;
|
|
|
|
err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, STS_HW_CONDITIONS);
|
|
if (!err) {
|
|
pm_wakeup_event(pwr->dev.parent, 0);
|
|
input_report_key(pwr, KEY_POWER, value & PWR_PWRON_IRQ);
|
|
input_sync(pwr);
|
|
} else {
|
|
dev_err(pwr->dev.parent, "twl4030: i2c error %d while reading"
|
|
" TWL4030 PM_MASTER STS_HW_CONDITIONS register\n", err);
|
|
}
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int twl4030_pwrbutton_probe(struct platform_device *pdev)
|
|
{
|
|
struct input_dev *pwr;
|
|
int irq = platform_get_irq(pdev, 0);
|
|
int err;
|
|
|
|
pwr = devm_input_allocate_device(&pdev->dev);
|
|
if (!pwr) {
|
|
dev_err(&pdev->dev, "Can't allocate power button\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
input_set_capability(pwr, EV_KEY, KEY_POWER);
|
|
pwr->name = "twl4030_pwrbutton";
|
|
pwr->phys = "twl4030_pwrbutton/input0";
|
|
pwr->dev.parent = &pdev->dev;
|
|
|
|
err = devm_request_threaded_irq(&pdev->dev, irq, NULL, powerbutton_irq,
|
|
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
|
|
IRQF_ONESHOT,
|
|
"twl4030_pwrbutton", pwr);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev, "Can't get IRQ for pwrbutton: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
err = input_register_device(pwr);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Can't register power button: %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
device_init_wakeup(&pdev->dev, true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_OF
|
|
static const struct of_device_id twl4030_pwrbutton_dt_match_table[] = {
|
|
{ .compatible = "ti,twl4030-pwrbutton" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
|
|
#endif
|
|
|
|
static struct platform_driver twl4030_pwrbutton_driver = {
|
|
.probe = twl4030_pwrbutton_probe,
|
|
.driver = {
|
|
.name = "twl4030_pwrbutton",
|
|
.of_match_table = of_match_ptr(twl4030_pwrbutton_dt_match_table),
|
|
},
|
|
};
|
|
module_platform_driver(twl4030_pwrbutton_driver);
|
|
|
|
MODULE_ALIAS("platform:twl4030_pwrbutton");
|
|
MODULE_DESCRIPTION("Triton2 Power Button");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Peter De Schrijver <peter.de-schrijver@nokia.com>");
|
|
MODULE_AUTHOR("Felipe Balbi <felipe.balbi@nokia.com>");
|
|
|