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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/input/misc/hisi_powerkey.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/input/misc/hisi_powerkey.c')
-rw-r--r-- | drivers/input/misc/hisi_powerkey.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/input/misc/hisi_powerkey.c b/drivers/input/misc/hisi_powerkey.c new file mode 100644 index 000000000..d3c293a95 --- /dev/null +++ b/drivers/input/misc/hisi_powerkey.c @@ -0,0 +1,129 @@ +/* + * 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(dev); + if (!input) { + dev_err(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) + return irq; + + 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(dev, "failed to register input device: %d\n", error); + return error; + } + + device_init_wakeup(dev, 1); + + return 0; +} + +static struct platform_driver hi65xx_powerkey_driver = { + .driver = { + .name = "hi65xx-powerkey", + }, + .probe = hi65xx_powerkey_probe, +}; +module_platform_driver(hi65xx_powerkey_driver); + +MODULE_AUTHOR("Zhiliang Xue <xuezhiliang@huawei.com"); +MODULE_DESCRIPTION("Hisi PMIC Power key driver"); +MODULE_LICENSE("GPL v2"); |