From: ChiYuan Huang Date: Fri, 12 Aug 2022 19:36:39 +0000 (-0700) Subject: Input: rt5120 - add power key support X-Git-Tag: v6.1~32^2~9^2~60 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ed3d5bd20dcdfdbe110feeabf120cba7bd329ad8;p=platform%2Fkernel%2Flinux-starfive.git Input: rt5120 - add power key support Add RT5120 PMIC power key support. Signed-off-by: ChiYuan Huang Link: https://lore.kernel.org/r/1660100142-32493-4-git-send-email-u0084500@gmail.com Signed-off-by: Dmitry Torokhov --- diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 9682402..9f088900 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -909,6 +909,15 @@ config INPUT_SC27XX_VIBRA To compile this driver as a module, choose M here. The module will be called sc27xx_vibra. +config INPUT_RT5120_PWRKEY + tristate "RT5120 PMIC power key support" + depends on MFD_RT5120 || COMPILE_TEST + help + This enables support for RT5120 PMIC power key driver. + + To compile this driver as a module, choose M here. the module will + be called rt5120-pwrkey. + config INPUT_STPMIC1_ONKEY tristate "STPMIC1 PMIC Onkey support" depends on MFD_STPMIC1 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 9eea13e..6abefc4 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_INPUT_RAVE_SP_PWRBUTTON) += rave-sp-pwrbutton.o obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o +obj-$(CONFIG_INPUT_RT5120_PWRKEY) += rt5120-pwrkey.o obj-$(CONFIG_INPUT_AXP20X_PEK) += axp20x-pek.o obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o obj-$(CONFIG_INPUT_RK805_PWRKEY) += rk805-pwrkey.o diff --git a/drivers/input/misc/rt5120-pwrkey.c b/drivers/input/misc/rt5120-pwrkey.c new file mode 100644 index 0000000..8a8c1ae --- /dev/null +++ b/drivers/input/misc/rt5120-pwrkey.c @@ -0,0 +1,120 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2022 Richtek Technology Corp. + * Author: ChiYuan Huang + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define RT5120_REG_INTSTAT 0x1E +#define RT5120_PWRKEYSTAT_MASK BIT(7) + +struct rt5120_priv { + struct regmap *regmap; + struct input_dev *input; +}; + +static irqreturn_t rt5120_pwrkey_handler(int irq, void *devid) +{ + struct rt5120_priv *priv = devid; + unsigned int stat; + int error; + + error = regmap_read(priv->regmap, RT5120_REG_INTSTAT, &stat); + if (error) + return IRQ_NONE; + + input_report_key(priv->input, KEY_POWER, + !(stat & RT5120_PWRKEYSTAT_MASK)); + input_sync(priv->input); + + return IRQ_HANDLED; +} + +static int rt5120_pwrkey_probe(struct platform_device *pdev) +{ + struct rt5120_priv *priv; + struct device *dev = &pdev->dev; + int press_irq, release_irq; + int error; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->regmap = dev_get_regmap(dev->parent, NULL); + if (!priv->regmap) { + dev_err(dev, "Failed to init regmap\n"); + return -ENODEV; + } + + press_irq = platform_get_irq_byname(pdev, "pwrkey-press"); + if (press_irq < 0) + return press_irq; + + release_irq = platform_get_irq_byname(pdev, "pwrkey-release"); + if (release_irq < 0) + return release_irq; + + /* Make input device be device resource managed */ + priv->input = devm_input_allocate_device(dev); + if (!priv->input) + return -ENOMEM; + + priv->input->name = "rt5120_pwrkey"; + priv->input->phys = "rt5120_pwrkey/input0"; + priv->input->id.bustype = BUS_I2C; + input_set_capability(priv->input, EV_KEY, KEY_POWER); + + error = input_register_device(priv->input); + if (error) { + dev_err(dev, "Failed to register input device: %d\n", error); + return error; + } + + error = devm_request_threaded_irq(dev, press_irq, + NULL, rt5120_pwrkey_handler, + 0, "pwrkey-press", priv); + if (error) { + dev_err(dev, + "Failed to register pwrkey press irq: %d\n", error); + return error; + } + + error = devm_request_threaded_irq(dev, release_irq, + NULL, rt5120_pwrkey_handler, + 0, "pwrkey-release", priv); + if (error) { + dev_err(dev, + "Failed to register pwrkey release irq: %d\n", error); + return error; + } + + return 0; +} + +static const struct of_device_id r5120_pwrkey_match_table[] = { + { .compatible = "richtek,rt5120-pwrkey" }, + {} +}; +MODULE_DEVICE_TABLE(of, r5120_pwrkey_match_table); + +static struct platform_driver rt5120_pwrkey_driver = { + .driver = { + .name = "rt5120-pwrkey", + .of_match_table = r5120_pwrkey_match_table, + }, + .probe = rt5120_pwrkey_probe, +}; +module_platform_driver(rt5120_pwrkey_driver); + +MODULE_AUTHOR("ChiYuan Huang "); +MODULE_DESCRIPTION("Richtek RT5120 power key driver"); +MODULE_LICENSE("GPL");