Commit fcd6eb50 authored by Jorge Ramirez-Ortiz's avatar Jorge Ramirez-Ortiz Committed by Dmitry Torokhov

Input: add powerkey driver for HISI 65xx SoC

This driver provides a input driver for the power button on the
HiSi 65xx SoC for boards like HiKey.

This driver was originally by Zhiliang Xue <xuezhiliang@huawei.com>
then basically rewritten by Jorge, but preserving the original
module author credits.
Signed-off-by: default avatarJorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
[jstultz: Reworked commit message, folded in other fixes/cleanups
from Jorge, implemented some larger cleanups suggested by DmitryT]
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent f695c240
...@@ -810,4 +810,13 @@ config INPUT_DRV2667_HAPTICS ...@@ -810,4 +810,13 @@ config INPUT_DRV2667_HAPTICS
To compile this driver as a module, choose M here: the To compile this driver as a module, choose M here: the
module will be called drv2667-haptics. module will be called drv2667-haptics.
config INPUT_HISI_POWERKEY
tristate "Hisilicon PMIC ONKEY support"
depends on ARCH_HISI || COMPILE_TEST
help
Say Y to enable support for PMIC ONKEY.
To compile this driver as a module, choose M here: the
module will be called hisi_powerkey.
endif endif
...@@ -35,6 +35,7 @@ obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o ...@@ -35,6 +35,7 @@ obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o
obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o
obj-$(CONFIG_INPUT_GPIO_BEEPER) += gpio-beeper.o obj-$(CONFIG_INPUT_GPIO_BEEPER) += gpio-beeper.o
obj-$(CONFIG_INPUT_GPIO_TILT_POLLED) += gpio_tilt_polled.o obj-$(CONFIG_INPUT_GPIO_TILT_POLLED) += gpio_tilt_polled.o
obj-$(CONFIG_INPUT_HISI_POWERKEY) += hisi_powerkey.o
obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
obj-$(CONFIG_INPUT_IMS_PCU) += ims-pcu.o obj-$(CONFIG_INPUT_IMS_PCU) += ims-pcu.o
obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o
......
/*
* Hisilicon PMIC powerkey driver
*
* Copyright (C) 2013 Hisilicon Ltd.
* Copyright (C) 2015, 2016 Linaro Ltd.
*
* 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/platform_device.h>
#include <linux/interrupt.h>
#include <linux/reboot.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_irq.h>
#include <linux/input.h>
#include <linux/slab.h>
/* the held interrupt will trigger after 4 seconds */
#define MAX_HELD_TIME (4 * MSEC_PER_SEC)
static irqreturn_t hi65xx_power_press_isr(int irq, void *q)
{
struct input_dev *input = q;
pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
input_report_key(input, KEY_POWER, 1);
input_sync(input);
return IRQ_HANDLED;
}
static irqreturn_t hi65xx_power_release_isr(int irq, void *q)
{
struct input_dev *input = q;
pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
input_report_key(input, KEY_POWER, 0);
input_sync(input);
return IRQ_HANDLED;
}
static irqreturn_t hi65xx_restart_toggle_isr(int irq, void *q)
{
struct input_dev *input = q;
int value = test_bit(KEY_RESTART, input->key);
pm_wakeup_event(input->dev.parent, MAX_HELD_TIME);
input_report_key(input, KEY_RESTART, !value);
input_sync(input);
return IRQ_HANDLED;
}
static const struct {
const char *name;
irqreturn_t (*handler)(int irq, void *q);
} hi65xx_irq_info[] = {
{ "down", hi65xx_power_press_isr },
{ "up", hi65xx_power_release_isr },
{ "hold 4s", hi65xx_restart_toggle_isr },
};
static int hi65xx_powerkey_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct input_dev *input;
int irq, i, error;
input = devm_input_allocate_device(&pdev->dev);
if (!input) {
dev_err(&pdev->dev, "failed to allocate input device\n");
return -ENOMEM;
}
input->phys = "hisi_on/input0";
input->name = "HISI 65xx PowerOn Key";
input_set_capability(input, EV_KEY, KEY_POWER);
input_set_capability(input, EV_KEY, KEY_RESTART);
for (i = 0; i < ARRAY_SIZE(hi65xx_irq_info); i++) {
irq = platform_get_irq_byname(pdev, hi65xx_irq_info[i].name);
if (irq < 0) {
error = irq;
dev_err(dev, "couldn't get irq %s: %d\n",
hi65xx_irq_info[i].name, error);
return error;
}
error = devm_request_any_context_irq(dev, irq,
hi65xx_irq_info[i].handler,
IRQF_ONESHOT,
hi65xx_irq_info[i].name,
input);
if (error < 0) {
dev_err(dev, "couldn't request irq %s: %d\n",
hi65xx_irq_info[i].name, error);
return error;
}
}
error = input_register_device(input);
if (error) {
dev_err(&pdev->dev, "failed to register input device: %d\n",
error);
return error;
}
device_init_wakeup(&pdev->dev, 1);
return 0;
}
static int hi65xx_powerkey_remove(struct platform_device *pdev)
{
device_init_wakeup(&pdev->dev, 0);
return 0;
}
static struct platform_driver hi65xx_powerkey_driver = {
.driver = {
.name = "hi65xx-powerkey",
},
.probe = hi65xx_powerkey_probe,
.remove = hi65xx_powerkey_remove,
};
module_platform_driver(hi65xx_powerkey_driver);
MODULE_AUTHOR("Zhiliang Xue <xuezhiliang@huawei.com");
MODULE_DESCRIPTION("Hisi PMIC Power key driver");
MODULE_LICENSE("GPL v2");
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