From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753952AbbCBKLz (ORCPT ); Mon, 2 Mar 2015 05:11:55 -0500 Received: from mailout2.samsung.com ([203.254.224.25]:19593 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751363AbbCBKKs (ORCPT ); Mon, 2 Mar 2015 05:10:48 -0500 X-AuditID: cbfee68e-f79b46d000002b74-03-54f437226b29 From: Jaewon Kim To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-input@vger.kernel.org Cc: Inki Dae , SangBae Lee , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Lee Jones , Chanwoo Choi , Sebastian Reichel , Beomho Seo , Jaewon Kim , Dmitry Torokhov Subject: [PATCH v7 4/5] Input: add haptic drvier on max77843 Date: Mon, 02 Mar 2015 19:10:37 +0900 Message-id: <1425291038-18269-5-git-send-email-jaewon02.kim@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1425291038-18269-1-git-send-email-jaewon02.kim@samsung.com> References: <1425291038-18269-1-git-send-email-jaewon02.kim@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprFIsWRmVeSWpSXmKPExsWyRsSkQFfJ/EuIwZ9GJYvTn7axW1z/8pzV Yv6Rc6wWhxe9YLTof7OQ1eLcq5WMFpPuT2Cx2NFwhNXi/tejjBY3P31jtbi8aw6bxefeI4wW S69fZLKYMH0ti0Xr3iPsFsc/HWSxOL27xEHQY828NYwel/t6mTx2zrrL7rFy+Rc2j02rOtk8 7lzbw+bRt2UVo8fnTXIBHFFcNimpOZllqUX6dglcGS1LAgv+R1R0XG1maWCc5NXFyMkhIWAi 8f3PfEYIW0ziwr31bF2MXBxCAksZJR7fes8EU/S08xY7RGIRo8T9mcuYQRJCAm1MEuc2OIPY bALaEt/XL2YFsUUESiUaH95lBWlgFvjBLPF71iuwhLCAjUTHhb9gU1kEVCV2HZ8HtppXwENi cddpIJsDaJuCxJxJNiBhTgFPieOvXjFC7PKQWHT2FAvITAmBv+wSmxY1sUDMEZD4NvkQC0Sv rMSmA8wQR0tKHFxxg2UCo/ACRoZVjKKpBckFxUnpRUZ6xYm5xaV56XrJ+bmbGIFRdvrfs74d jDcPWB9iFOBgVOLh9ZjzOUSINbGsuDL3EKMp0IaJzFKiyfnAWM4riTc0NjOyMDUxNTYytzRT EudNkPoZLCSQnliSmp2aWpBaFF9UmpNafIiRiYNTqoFxeegPy0vr7szfy/66ZtmzxuQ9V2XU whxU/1b4Lzi/T1D/9r90jQ9vFbj2RjyRTS+527C45VP5/2n2Wf07V0udP+1etvygbKOj66aj d5991v6iwvhO9IfDrAsvdtysvNzp71rheTdv1lzdjVukpkv16mQwH1I8unc1S93E+0tnxf5c 2PanhiPsiBJLcUaioRZzUXEiAIVIDq+tAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrCIsWRmVeSWpSXmKPExsVy+t9jAV0l8y8hBstfilqc/rSN3eL6l+es FvOPnGO1OLzoBaNF/5uFrBbnXq1ktJh0fwKLxY6GI6wW978eZbS4+ekbq8XlXXPYLD73HmG0 WHr9IpPFhOlrWSxa9x5htzj+6SCLxendJQ6CHmvmrWH0uNzXy+Sxc9Zddo+Vy7+weWxa1cnm cefaHjaPvi2rGD0+b5IL4IhqYLTJSE1MSS1SSM1Lzk/JzEu3VfIOjneONzUzMNQ1tLQwV1LI S8xNtVVy8QnQdcvMAfpDSaEsMacUKBSQWFyspG+HaUJoiJuuBUxjhK5vSBBcj5EBGkhYw5jR siSw4H9ERcfVZpYGxkleXYycHBICJhJPO2+xQ9hiEhfurWfrYuTiEBJYxChxf+YyZpCEkEAb k8S5Dc4gNpuAtsT39YtZQWwRgVKJxod3WUEamAV+MEv8nvUKLCEsYCPRceEvE4jNIqAqsev4 PEYQm1fAQ2Jx12kgmwNom4LEnEk2IGFOAU+J469eMULs8pBYdPYUywRG3gWMDKsYRVMLkguK k9JzjfSKE3OLS/PS9ZLzczcxgmP4mfQOxlUNFocYBTgYlXh4PeZ8DhFiTSwrrsw9xCjBwawk wvta/kuIEG9KYmVValF+fFFpTmrxIUZToKMmMkuJJucD00teSbyhsYmZkaWRuaGFkbG5kjiv kn1biJBAemJJanZqakFqEUwfEwenVAPj5l+3Xzc5uG7lieHrylZ4yDc1eLu80fq7tl2TFZZu qj9hofFe9tbNA8rCt45ETij1M5xvv+loM+83SaviDZ2lM7z+6YXyFpv5bp7NzlXmVXFzHlfD D85z/qu9ZJ1Dec+U/zmzq/Lv2eOcfitYJePO28U9yDCwuLvP/OS1/5NYj034vPmE4aQmJZbi jERDLeai4kQAamxCUfcCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds support for haptic driver on max77843 MFD(Multi Function Device) with PMIC, MUIC, LED, CHARGER. This driver supports external pwm and LRA(Linear Resonant Actuator) motor. And it supports ff-memless interface from inpu framework. Cc: Dmitry Torokhov Signed-off-by: Jaewon Kim --- drivers/input/misc/Kconfig | 12 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/max77843-haptic.c | 358 ++++++++++++++++++++++++++++++++++ 3 files changed, 371 insertions(+) create mode 100644 drivers/input/misc/max77843-haptic.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 6deb8da..aa8c072 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -165,6 +165,18 @@ config INPUT_MAX77693_HAPTIC To compile this driver as module, choose M here: the module will be called max77693-haptic. +config INPUT_MAX77843_HAPTIC + tristate "MAXIM MAX77843 haptic controller support" + depends on MFD_MAX77843 && PWM + select INPUT_FF_MEMLESS + help + This option enables support for the haptic controller on + MAXIM MAX77843 chip. The driver supports ff-memless interface + from input framework. + + To compile this driver as module, choose M here: the + module will be called max77843-haptic. + config INPUT_MAX8925_ONKEY tristate "MAX8925 ONKEY support" depends on MFD_MAX8925 diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 403a1a5..75b5884 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -39,6 +39,7 @@ obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o obj-$(CONFIG_INPUT_KXTJ9) += kxtj9.o obj-$(CONFIG_INPUT_M68K_BEEP) += m68kspkr.o obj-$(CONFIG_INPUT_MAX77693_HAPTIC) += max77693-haptic.o +obj-$(CONFIG_INPUT_MAX77843_HAPTIC) += max77843-haptic.o obj-$(CONFIG_INPUT_MAX8925_ONKEY) += max8925_onkey.o obj-$(CONFIG_INPUT_MAX8997_HAPTIC) += max8997_haptic.o obj-$(CONFIG_INPUT_MC13783_PWRBUTTON) += mc13783-pwrbutton.o diff --git a/drivers/input/misc/max77843-haptic.c b/drivers/input/misc/max77843-haptic.c new file mode 100644 index 0000000..eef9862 --- /dev/null +++ b/drivers/input/misc/max77843-haptic.c @@ -0,0 +1,358 @@ +/* + * MAXIM MAX77693 Haptic device driver + * + * Copyright (C) 2015 Samsung Electronics + * Author: Jaewon Kim + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MAX_MAGNITUDE_SHIFT 16 + +enum max77843_haptic_motor_type { + MAX77843_HAPTIC_ERM = 0, + MAX77843_HAPTIC_LRA, +}; + +enum max77843_haptic_pwm_divisor { + MAX77843_HAPTIC_PWM_DIVISOR_32 = 0, + MAX77843_HAPTIC_PWM_DIVISOR_64, + MAX77843_HAPTIC_PWM_DIVISOR_128, + MAX77843_HAPTIC_PWM_DIVISOR_256, +}; + +struct max77843_haptic { + struct regmap *regmap_haptic; + struct device *dev; + struct input_dev *input_dev; + struct pwm_device *pwm_dev; + struct regulator *motor_reg; + struct work_struct work; + struct mutex mutex; + + unsigned int magnitude; + unsigned int pwm_duty; + + bool active; + bool suspended; + + enum max77843_haptic_motor_type type; + enum max77843_haptic_pwm_divisor pwm_divisor; +}; + +static int max77843_haptic_set_duty_cycle(struct max77843_haptic *haptic) +{ + int delta = (haptic->pwm_dev->period + haptic->pwm_duty) / 2; + int error; + + error = pwm_config(haptic->pwm_dev, delta, haptic->pwm_dev->period); + if (error) { + dev_err(haptic->dev, "failed to configure pwm: %d\n", error); + return error; + } + + return 0; +} + +static int max77843_haptic_bias(struct max77843_haptic *haptic, bool on) +{ + int error; + + error = regmap_update_bits(haptic->regmap_haptic, + MAX77843_SYS_REG_MAINCTRL1, + MAX77843_MAINCTRL1_BIASEN_MASK, + on << MAINCTRL1_BIASEN_SHIFT); + if (error) { + dev_err(haptic->dev, "failed to %s bias: %d\n", + on ? "enable" : "disable", error); + return error; + } + + return 0; +} + +static int max77843_haptic_config(struct max77843_haptic *haptic, bool enable) +{ + unsigned int value; + int error; + + value = ((haptic->type << MCONFIG_MODE_SHIFT) | + (enable << MCONFIG_MEN_SHIFT) | + (haptic->pwm_divisor << MCONFIG_PDIV_SHIFT)); + + error = regmap_write(haptic->regmap_haptic, + MAX77843_HAP_REG_MCONFIG, value); + if (error) { + dev_err(haptic->dev, + "failed to update haptic config: %d\n", error); + return error; + } + + return 0; +} + +static int max77843_haptic_enable(struct max77843_haptic *haptic) +{ + int error; + + if (haptic->active) + return 0; + + error = pwm_enable(haptic->pwm_dev); + if (error) { + dev_err(haptic->dev, + "failed to enable pwm device: %d\n", error); + return error; + } + + error = max77843_haptic_config(haptic, true); + if (error) + goto err_config; + + haptic->active = true; + + return 0; + +err_config: + pwm_disable(haptic->pwm_dev); + + return error; +} + +static int max77843_haptic_disable(struct max77843_haptic *haptic) +{ + int error; + + if (!haptic->active) + return 0; + + error = max77843_haptic_config(haptic, false); + if (error) + return error; + + pwm_disable(haptic->pwm_dev); + + haptic->active = false; + + return 0; +} + +static void max77843_haptic_play_work(struct work_struct *work) +{ + struct max77843_haptic *haptic = + container_of(work, struct max77843_haptic, work); + int error; + + mutex_lock(&haptic->mutex); + + if (haptic->suspended) + goto out_unlock; + + if (haptic->magnitude) { + error = max77843_haptic_set_duty_cycle(haptic); + if (error) { + dev_err(haptic->dev, + "failed to set duty cycle: %d\n", error); + goto out_unlock; + } + + error = max77843_haptic_enable(haptic); + if (error) + dev_err(haptic->dev, + "cannot enable haptic: %d\n", error); + } else { + error = max77843_haptic_disable(haptic); + if (error) + dev_err(haptic->dev, + "cannot disable haptic: %d\n", error); + } + +out_unlock: + mutex_unlock(&haptic->mutex); +} + +static int max77843_haptic_play_effect(struct input_dev *dev, void *data, + struct ff_effect *effect) +{ + struct max77843_haptic *haptic = input_get_drvdata(dev); + u64 period_mag_multi; + + haptic->magnitude = effect->u.rumble.strong_magnitude; + if (!haptic->magnitude) + haptic->magnitude = effect->u.rumble.weak_magnitude; + + period_mag_multi = (u64)haptic->pwm_dev->period * haptic->magnitude; + haptic->pwm_duty = (unsigned int)(period_mag_multi >> + MAX_MAGNITUDE_SHIFT); + + schedule_work(&haptic->work); + + return 0; +} + +static int max77843_haptic_open(struct input_dev *dev) +{ + struct max77843_haptic *haptic = input_get_drvdata(dev); + int error; + + error = max77843_haptic_bias(haptic, true); + if (error) + return error; + + error = regulator_enable(haptic->motor_reg); + if (error) { + dev_err(haptic->dev, + "failed to enable regulator: %d\n", error); + return error; + } + + return 0; +} + +static void max77843_haptic_close(struct input_dev *dev) +{ + struct max77843_haptic *haptic = input_get_drvdata(dev); + int error; + + cancel_work_sync(&haptic->work); + max77843_haptic_disable(haptic); + + error = regulator_disable(haptic->motor_reg); + if (error) + dev_err(haptic->dev, + "failed to disable regulator: %d\n", error); + + max77843_haptic_bias(haptic, false); +} + +static int max77843_haptic_probe(struct platform_device *pdev) +{ + struct max77843 *max77843 = dev_get_drvdata(pdev->dev.parent); + struct max77843_haptic *haptic; + int error; + + haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL); + if (!haptic) + return -ENOMEM; + + haptic->regmap_haptic = max77843->regmap; + haptic->dev = &pdev->dev; + haptic->type = MAX77843_HAPTIC_LRA; + haptic->pwm_divisor = MAX77843_HAPTIC_PWM_DIVISOR_128; + + INIT_WORK(&haptic->work, max77843_haptic_play_work); + mutex_init(&haptic->mutex); + + haptic->pwm_dev = devm_pwm_get(&pdev->dev, NULL); + if (IS_ERR(haptic->pwm_dev)) { + dev_err(&pdev->dev, "failed to get pwm device\n"); + return PTR_ERR(haptic->pwm_dev); + } + + haptic->motor_reg = devm_regulator_get_exclusive(&pdev->dev, "haptic"); + if (IS_ERR(haptic->motor_reg)) { + dev_err(&pdev->dev, "failed to get regulator\n"); + return PTR_ERR(haptic->motor_reg); + } + + haptic->input_dev = devm_input_allocate_device(&pdev->dev); + if (!haptic->input_dev) { + dev_err(&pdev->dev, "failed to allocate input device\n"); + return -ENOMEM; + } + + haptic->input_dev->name = "max77843-haptic"; + haptic->input_dev->id.version = 1; + haptic->input_dev->dev.parent = &pdev->dev; + haptic->input_dev->open = max77843_haptic_open; + haptic->input_dev->close = max77843_haptic_close; + input_set_drvdata(haptic->input_dev, haptic); + input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE); + + error = input_ff_create_memless(haptic->input_dev, NULL, + max77843_haptic_play_effect); + if (error) { + dev_err(&pdev->dev, "failed to create force-feedback\n"); + return error; + } + + error = input_register_device(haptic->input_dev); + if (error) { + dev_err(&pdev->dev, "failed to register input device\n"); + return error; + } + + platform_set_drvdata(pdev, haptic); + + return 0; +} + +static int __maybe_unused max77843_haptic_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max77843_haptic *haptic = platform_get_drvdata(pdev); + int error; + + error = mutex_lock_interruptible(&haptic->mutex); + if (error) + return error; + + max77843_haptic_disable(haptic); + + haptic->suspended = true; + + mutex_unlock(&haptic->mutex); + + return 0; +} + +static int __maybe_unused max77843_haptic_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct max77843_haptic *haptic = platform_get_drvdata(pdev); + unsigned int magnitude; + + mutex_lock(&haptic->mutex); + + haptic->suspended = false; + + magnitude = ACCESS_ONCE(haptic->magnitude); + if (magnitude) + max77843_haptic_enable(haptic); + + mutex_unlock(&haptic->mutex); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(max77843_haptic_pm_ops, + max77843_haptic_suspend, max77843_haptic_resume); + +static struct platform_driver max77843_haptic_driver = { + .driver = { + .name = "max77843-haptic", + .pm = &max77843_haptic_pm_ops, + }, + .probe = max77843_haptic_probe, +}; +module_platform_driver(max77843_haptic_driver); + +MODULE_AUTHOR("Jaewon Kim "); +MODULE_DESCRIPTION("MAXIM MAX77843 Haptic driver"); +MODULE_LICENSE("GPL"); -- 1.7.9.5