From: Job Sava <jsava@xxxxxxxxxxxxxxxx> TPS6594 defines two interrupts for the power button one for push and one for release. This driver is very simple in that it maps the push interrupt to a key input and the release interrupt to a key release. Signed-off-by: Job Sava <jsava@xxxxxxxxxxxxxxxx> Acked-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Signed-off-by: Michael Walle <mwalle@xxxxxxxxxx> --- v2: - moved the mfd part into a seperate patch --- drivers/input/misc/Kconfig | 10 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/tps6594-pwrbutton.c | 126 +++++++++++++++++++++++++ 3 files changed, 137 insertions(+) create mode 100644 drivers/input/misc/tps6594-pwrbutton.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 0fb21c99a5e3..cce51358242f 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -506,6 +506,16 @@ config INPUT_TPS65219_PWRBUTTON To compile this driver as a module, choose M here. The module will be called tps65219-pwrbutton. +config INPUT_TPS6594_PWRBUTTON + tristate "TPS6594 Power button driver" + depends on MFD_TPS6594 + help + Say Y here if you want to enable power button reporting for + TPS6594 Power Management IC devices. + + To compile this driver as a module, choose M here. The module will + be called tps6594-pwrbutton. + config INPUT_AXP20X_PEK tristate "X-Powers AXP20X power button driver" depends on MFD_AXP20X diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index d468c8140b93..bb12f883851c 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -83,6 +83,7 @@ obj-$(CONFIG_INPUT_SPARCSPKR) += sparcspkr.o obj-$(CONFIG_INPUT_STPMIC1_ONKEY) += stpmic1_onkey.o obj-$(CONFIG_INPUT_TPS65218_PWRBUTTON) += tps65218-pwrbutton.o obj-$(CONFIG_INPUT_TPS65219_PWRBUTTON) += tps65219-pwrbutton.o +obj-$(CONFIG_INPUT_TPS6594_PWRBUTTON) += tps6594-pwrbutton.o obj-$(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/tps6594-pwrbutton.c b/drivers/input/misc/tps6594-pwrbutton.c new file mode 100644 index 000000000000..cd039b3866dc --- /dev/null +++ b/drivers/input/misc/tps6594-pwrbutton.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * power button driver for TI TPS6594 PMICs + * + * Copyright (C) 2025 Critical Link LLC - https://www.criticallink.com/ + */ +#include <linux/init.h> +#include <linux/input.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/mfd/tps6594.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +struct tps6594_pwrbutton { + struct device *dev; + struct input_dev *idev; + char phys[32]; +}; + +static irqreturn_t tps6594_pb_push_irq(int irq, void *_pwr) +{ + struct tps6594_pwrbutton *pwr = _pwr; + + input_report_key(pwr->idev, KEY_POWER, 1); + pm_wakeup_event(pwr->dev, 0); + input_sync(pwr->idev); + + return IRQ_HANDLED; +} + +static irqreturn_t tps6594_pb_release_irq(int irq, void *_pwr) +{ + struct tps6594_pwrbutton *pwr = _pwr; + + input_report_key(pwr->idev, KEY_POWER, 0); + input_sync(pwr->idev); + + return IRQ_HANDLED; +} + +static int tps6594_pb_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct tps6594_pwrbutton *pwr; + struct input_dev *idev; + int error; + int push_irq; + int release_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 = pdev->name; + snprintf(pwr->phys, sizeof(pwr->phys), "%s/input0", + pdev->name); + idev->phys = pwr->phys; + idev->id.bustype = BUS_I2C; + + input_set_capability(idev, EV_KEY, KEY_POWER); + + pwr->dev = dev; + pwr->idev = idev; + device_init_wakeup(dev, true); + + push_irq = platform_get_irq(pdev, 0); + if (push_irq < 0) + return -EINVAL; + + release_irq = platform_get_irq(pdev, 1); + if (release_irq < 0) + return -EINVAL; + + error = devm_request_threaded_irq(dev, push_irq, NULL, + tps6594_pb_push_irq, + IRQF_ONESHOT, + pdev->resource[0].name, pwr); + if (error) { + dev_err(dev, "failed to request push IRQ #%d: %d\n", push_irq, + error); + return error; + } + + error = devm_request_threaded_irq(dev, release_irq, NULL, + tps6594_pb_release_irq, + IRQF_ONESHOT, + pdev->resource[1].name, pwr); + if (error) { + dev_err(dev, "failed to request release IRQ #%d: %d\n", + release_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 const struct platform_device_id tps6594_pwrbtn_id_table[] = { + { "tps6594-pwrbutton", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(platform, tps6594_pwrbtn_id_table); + +static struct platform_driver tps6594_pb_driver = { + .probe = tps6594_pb_probe, + .driver = { + .name = "tps6594_pwrbutton", + }, + .id_table = tps6594_pwrbtn_id_table, +}; +module_platform_driver(tps6594_pb_driver); + +MODULE_DESCRIPTION("TPS6594 Power Button"); +MODULE_LICENSE("GPL"); -- 2.39.5
