Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966489AbbDQOlP (ORCPT ); Fri, 17 Apr 2015 10:41:15 -0400 Received: from mail1.bemta14.messagelabs.com ([193.109.254.113]:61034 "EHLO mail1.bemta14.messagelabs.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965530AbbDQOlI (ORCPT ); Fri, 17 Apr 2015 10:41:08 -0400 X-Env-Sender: stwiss.opensource@diasemi.com X-Msg-Ref: server-13.tower-194.messagelabs.com!1429281664!23735555!1 X-Originating-IP: [82.210.246.133] X-StarScan-Received: X-StarScan-Version: 6.13.6; banners=-,-,- X-VirusChecked: Checked Message-ID: In-Reply-To: References: From: S Twiss Date: Fri, 17 Apr 2015 15:23:33 +0100 Subject: [PATCH V1 4/6] input: misc: onkey: da9062: DA9062 OnKey driver To: Dmitry Torokhov , LINUXINPUT , LINUXKERNEL CC: Alessandro Zummo , DEVICETREE , David Dajun Chen , Ian Campbell , Kumar Gala , LINUXWATCHDOG , Lee Jones , Liam Girdwood , Mark Brown , Mark Rutland , Pawel Moll , RTCLINUX , Rob Herring , S Twiss , Samuel Ortiz , Support Opensource , Wim Van Sebroeck MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8319 Lines: 288 From: S Twiss Add OnKey driver support for DA9062 Signed-off-by: Steve Twiss --- This patch applies against linux-next and v4.0 drivers/input/misc/Kconfig | 10 ++ drivers/input/misc/Makefile | 1 + drivers/input/misc/da9062-onkey.c | 223 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 234 insertions(+) create mode 100644 drivers/input/misc/da9062-onkey.c diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 6deb8da..472ca38 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -586,6 +586,16 @@ config INPUT_DA9055_ONKEY To compile this driver as a module, choose M here: the module will be called da9055_onkey. +config INPUT_DA9062_ONKEY + tristate "Dialog DA9062 OnKey" + depends on MFD_DA9062 + help + Support the ONKEY of Dialog DA9062 Power Management IC as an + input device reporting power button status. + + To compile this driver as a module, choose M here: the module + will be called da9062-onkey. + config INPUT_DM355EVM tristate "TI DaVinci DM355 EVM Keypad and IR Remote" depends on MFD_DM355EVM_MSP diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 403a1a5..a631283 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -25,6 +25,7 @@ obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o +obj-$(CONFIG_INPUT_DA9062_ONKEY) += da9062-onkey.o obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o obj-$(CONFIG_INPUT_E3X0_BUTTON) += e3x0-button.o obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o diff --git a/drivers/input/misc/da9062-onkey.c b/drivers/input/misc/da9062-onkey.c new file mode 100644 index 0000000..c4c0295 --- /dev/null +++ b/drivers/input/misc/da9062-onkey.c @@ -0,0 +1,223 @@ +/* + * da9062-onkey.c - ONKEY device driver for DA9062 + * Copyright (C) 2015 Dialog Semiconductor Ltd. + * + * 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. + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct da9062_onkey { + struct da9062 *hw; + struct delayed_work work; + struct input_dev *input; + int irq; + bool key_power; +}; + +static void da9062_poll_on(struct work_struct *work) +{ + struct da9062_onkey *onkey = container_of(work, struct da9062_onkey, + work.work); + unsigned int val; + int fault_log = 0; + bool poll = true; + int ret; + + /* poll to see when the pin is released */ + ret = regmap_read(onkey->hw->regmap, DA9062AA_STATUS_A, &val); + if (ret < 0) { + dev_err(&onkey->input->dev, + "Failed to read ON status: %d\n", ret); + goto err_poll; + } + + if (!(val & DA9062AA_NONKEY_MASK)) { + ret = regmap_update_bits(onkey->hw->regmap, + DA9062AA_CONTROL_B, + DA9062AA_NONKEY_LOCK_MASK, 0); + if (ret < 0) { + dev_err(&onkey->input->dev, + "Failed to reset the Key Delay %d\n", ret); + goto err_poll; + } + + input_report_key(onkey->input, KEY_POWER, 0); + input_sync(onkey->input); + + poll = false; + } + + /* if the fault log KEY_RESET is detected, + * then clear it and shutdown DA9062 via I2C + */ + ret = regmap_read(onkey->hw->regmap, DA9062AA_FAULT_LOG, &fault_log); + if (ret < 0) + dev_warn(&onkey->input->dev, "Cannot read FAULT_LOG\n"); + + if (fault_log & DA9062AA_KEY_RESET_MASK) { + ret = regmap_write(onkey->hw->regmap, + DA9062AA_FAULT_LOG, + DA9062AA_KEY_RESET_MASK); + if (ret < 0) + dev_warn(&onkey->input->dev, + "Cannot reset KEY_RESET fault log\n"); + else { + /* at this point we do any S/W housekeeping + * and then send shutdown command + */ + dev_info(&onkey->input->dev, + "Sending SHUTDOWN to DA9062 ...\n"); + ret = regmap_write(onkey->hw->regmap, + DA9062AA_CONTROL_F, + DA9062AA_SHUTDOWN_MASK); + if (ret < 0) + dev_err(&onkey->input->dev, + "Cannot SHUTDOWN DA9062\n"); + } + } + +err_poll: + if (poll) + schedule_delayed_work(&onkey->work, 50); +} + +static irqreturn_t da9062_onkey_irq_handler(int irq, void *data) +{ + struct da9062_onkey *onkey = data; + unsigned int val; + int ret; + + ret = regmap_read(onkey->hw->regmap, DA9062AA_STATUS_A, &val); + if (onkey->key_power && (ret >= 0) && (val & DA9062AA_NONKEY_MASK)) { + input_report_key(onkey->input, KEY_POWER, 1); + input_sync(onkey->input); + schedule_delayed_work(&onkey->work, 0); + dev_notice(&onkey->input->dev, "KEY_POWER pressed.\n"); + } else { + input_report_key(onkey->input, KEY_SLEEP, 1); + input_sync(onkey->input); + input_report_key(onkey->input, KEY_SLEEP, 0); + input_sync(onkey->input); + dev_notice(&onkey->input->dev, "KEY_SLEEP pressed.\n"); + } + + return IRQ_HANDLED; +} + +static int da9062_onkey_probe(struct platform_device *pdev) +{ + struct da9062 *chip = dev_get_drvdata(pdev->dev.parent); + struct da9062_onkey *onkey; + bool kp_tmp = true; + int ret = 0; + + kp_tmp = of_property_read_bool((&pdev->dev)->of_node, + "dlg,disable-key-power"); + kp_tmp = !kp_tmp; + + + onkey = devm_kzalloc(&pdev->dev, sizeof(struct da9062_onkey), + GFP_KERNEL); + if (!onkey) { + dev_err(&pdev->dev, "Failed to allocate memory.\n"); + ret = -ENOMEM; + goto err; + } + + INIT_DELAYED_WORK(&onkey->work, da9062_poll_on); + + onkey->input = devm_input_allocate_device(&pdev->dev); + if (!onkey->input) { + dev_err(&pdev->dev, "Failed to allocated input device.\n"); + ret = -ENOMEM; + goto err; + } + + ret = platform_get_irq_byname(pdev, "ONKEY"); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to get platform IRQ.\n"); + goto err; + } + onkey->irq = ret; + + ret = request_threaded_irq(onkey->irq, NULL, + da9062_onkey_irq_handler, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, + "ONKEY", onkey); + if (ret) { + dev_err(&pdev->dev, + "Failed to request input device IRQ.\n"); + goto err; + } + + onkey->hw = chip; + onkey->key_power = kp_tmp; + onkey->input->evbit[0] = BIT_MASK(EV_KEY); + onkey->input->name = "da9062-onkey"; + onkey->input->phys = "da9062-onkey/input0"; + onkey->input->dev.parent = &pdev->dev; + + if (onkey->key_power) + input_set_capability(onkey->input, EV_KEY, KEY_POWER); + input_set_capability(onkey->input, EV_KEY, KEY_SLEEP); + + ret = input_register_device(onkey->input); + if (ret) { + dev_err(&pdev->dev, + "Failed to register input device.\n"); + goto err_irq; + } + + platform_set_drvdata(pdev, onkey); + return 0; + +err_irq: + free_irq(onkey->irq, onkey); + cancel_delayed_work_sync(&onkey->work); +err: + return ret; +} + +static int da9062_onkey_remove(struct platform_device *pdev) +{ + struct da9062_onkey *onkey = platform_get_drvdata(pdev); + + free_irq(onkey->irq, onkey); + cancel_delayed_work_sync(&onkey->work); + input_unregister_device(onkey->input); + return 0; +} + +static struct platform_driver da9062_onkey_driver = { + .probe = da9062_onkey_probe, + .remove = da9062_onkey_remove, + .driver = { + .name = "da9062-onkey", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(da9062_onkey_driver); + +MODULE_AUTHOR("S Twiss "); +MODULE_DESCRIPTION("ONKEY device driver for Dialog DA9062"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform: da9062-onkey"); -- end-of-patch for PATCH V1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/