From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartosz Golaszewski Subject: [PATCH 12/13] input: max77650: add onkey support Date: Fri, 18 Jan 2019 14:42:43 +0100 Message-ID: <20190118134244.22253-13-brgl@bgdev.pl> References: <20190118134244.22253-1-brgl@bgdev.pl> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190118134244.22253-1-brgl@bgdev.pl> Sender: linux-kernel-owner@vger.kernel.org To: Rob Herring , Mark Rutland , Linus Walleij , Dmitry Torokhov , Jacek Anaszewski , Pavel Machek , Lee Jones , Sebastian Reichel , Liam Girdwood , Mark Brown , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski List-Id: linux-leds@vger.kernel.org From: Bartosz Golaszewski Add support for the push- and slide-button events for max77650. Signed-off-by: Bartosz Golaszewski --- drivers/input/misc/Kconfig | 9 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/max77650-onkey.c | 135 ++++++++++++++++++++++++++++ 3 files changed, 145 insertions(+) create mode 100644 drivers/input/misc/max77650-onkey.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index ca59a2be9bc5..bb9c45c1269e 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -180,6 +180,15 @@ config INPUT_M68K_BEEP tristate "M68k Beeper support" depends on M68K +config INPUT_MAX77650_ONKEY + tristate "Maxim MAX77650 ONKEY support" + depends on MFD_MAX77650 + help + Support the ONKEY of the MAX77650 PMIC as an input device. + + To compile this driver as a module, choose M here: the module + will be called max77650-onkey. + config INPUT_MAX77693_HAPTIC tristate "MAXIM MAX77693/MAX77843 haptic controller support" depends on (MFD_MAX77693 || MFD_MAX77843) && PWM diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 9d0f9d1ff68f..5bd53590ce60 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o obj-$(CONFIG_INPUT_KXTJ9) += kxtj9.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o +obj-$(CONFIG_INPUT_MAX77650_ONKEY) += max77650-onkey.o obj-$(CONFIG_INPUT_MAX77693_HAPTIC) += max77693-haptic.o obj-$(CONFIG_INPUT_MAX8925_ONKEY) += max8925_onkey.o obj-$(CONFIG_INPUT_MAX8997_HAPTIC) += max8997_haptic.o diff --git a/drivers/input/misc/max77650-onkey.c b/drivers/input/misc/max77650-onkey.c new file mode 100644 index 000000000000..cc7e83f589cd --- /dev/null +++ b/drivers/input/misc/max77650-onkey.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2018 BayLibre SAS + * Author: Bartosz Golaszewski + * + * ONKEY driver for MAXIM 77650/77651 charger/power-supply. + */ + +#include +#include +#include +#include +#include +#include +#include + +#define MAX77650_ONKEY_MODE_MASK BIT(3) +#define MAX77650_ONKEY_MODE_PUSH 0x00 +#define MAX77650_ONKEY_MODE_SLIDE BIT(3) + +struct max77650_onkey { + struct input_dev *input; + unsigned int code; +}; + +static irqreturn_t +max77650_onkey_report(struct max77650_onkey *onkey, int value) +{ + input_report_key(onkey->input, onkey->code, value); + input_sync(onkey->input); + + return IRQ_HANDLED; +} + +static irqreturn_t max77650_onkey_falling(int irq, void *data) +{ + struct max77650_onkey *onkey = data; + + return max77650_onkey_report(onkey, 0); +} + +static irqreturn_t max77650_onkey_rising(int irq, void *data) +{ + struct max77650_onkey *onkey = data; + + return max77650_onkey_report(onkey, 1); +} + +static int max77650_onkey_probe(struct platform_device *pdev) +{ + struct regmap_irq_chip_data *irq_data; + struct max77650_onkey *onkey; + struct device *dev, *parent; + int irq_r, irq_f, rv, mode; + struct i2c_client *i2c; + const char *mode_prop; + struct regmap *map; + + dev = &pdev->dev; + parent = dev->parent; + i2c = to_i2c_client(parent); + irq_data = i2c_get_clientdata(i2c); + + map = dev_get_regmap(parent, NULL); + if (!map) + return -ENODEV; + + onkey = devm_kzalloc(dev, sizeof(*onkey), GFP_KERNEL); + if (!onkey) + return -ENOMEM; + + rv = device_property_read_u32(dev, "linux,code", &onkey->code); + if (rv) + onkey->code = KEY_POWER; + + rv = device_property_read_string(dev, "maxim,onkey-mode", &mode_prop); + if (rv) + mode_prop = "push"; + + if (strcmp(mode_prop, "push") == 0) + mode = MAX77650_ONKEY_MODE_PUSH; + else if (strcmp(mode_prop, "slide") == 0) + mode = MAX77650_ONKEY_MODE_SLIDE; + else + return -EINVAL; + + rv = regmap_update_bits(map, MAX77650_REG_CNFG_GLBL, + MAX77650_ONKEY_MODE_MASK, mode); + if (rv) + return rv; + + irq_f = regmap_irq_get_virq(irq_data, MAX77650_INT_nEN_F); + if (irq_f <= 0) + return -EINVAL; + + irq_r = regmap_irq_get_virq(irq_data, MAX77650_INT_nEN_R); + if (irq_r <= 0) + return -EINVAL; + + onkey->input = devm_input_allocate_device(dev); + if (!onkey->input) + return -ENOMEM; + + onkey->input->name = "max77650_onkey"; + onkey->input->phys = "max77650_onkey/input0"; + onkey->input->id.bustype = BUS_I2C; + onkey->input->dev.parent = dev; + input_set_capability(onkey->input, EV_KEY, onkey->code); + + rv = devm_request_threaded_irq(dev, irq_f, NULL, + max77650_onkey_falling, + IRQF_ONESHOT, "onkey-down", onkey); + if (rv) + return rv; + + rv = devm_request_threaded_irq(dev, irq_r, NULL, + max77650_onkey_rising, + IRQF_ONESHOT, "onkey-up", onkey); + if (rv) + return rv; + + return input_register_device(onkey->input); +} + +static struct platform_driver max77650_onkey_driver = { + .driver = { + .name = "max77650-onkey", + }, + .probe = max77650_onkey_probe, +}; +module_platform_driver(max77650_onkey_driver); + +MODULE_DESCRIPTION("MAXIM 77650/77651 ONKEY driver"); +MODULE_AUTHOR("Bartosz Golaszewski "); +MODULE_LICENSE("GPL"); -- 2.19.1