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[82.240.30.221]) by mx.google.com with ESMTPSA id js5sm23291613wid.11.2015.01.08.13.03.26 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 08 Jan 2015 13:03:27 -0800 (PST) From: Moritz Fischer To: dmitry.torokhov@gmail.com Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Moritz Fischer Subject: [PATCH 1/3] input: misc: Support NI Ettus Research USRP E3x0 Button Date: Thu, 8 Jan 2015 22:02:49 +0100 Message-Id: <1420750971-21812-2-git-send-email-moritz.fischer@ettus.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1420750971-21812-1-git-send-email-moritz.fischer@ettus.com> References: <1420750971-21812-1-git-send-email-moritz.fischer@ettus.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Moritz Fischer --- drivers/input/misc/Kconfig | 10 +++ drivers/input/misc/Makefile | 1 + drivers/input/misc/e3x0-button.c | 153 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 164 insertions(+) diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 23297ab..84a56b4 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -93,6 +93,16 @@ config INPUT_BMA150 To compile this driver as a module, choose M here: the module will be called bma150. +config INPUT_E3X0_BUTTON + tristate "NI Ettus Research USRP E3x0 Button support." + default n + help + Say Y here to enable support for the NI Ettus Research + USRP E3x0 Button. + + To compile this driver as a module, choose M here: the + module will be called e3x0_button. + config INPUT_PCSPKR tristate "PC Speaker support" depends on PCSPKR_PLATFORM diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index 19c7603..b1775a5 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -26,6 +26,7 @@ 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_DM355EVM) += dm355evm_keys.o +obj-$(CONFIG_INPUT_E3X0_BUTTON) += e3x0-button.o obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o obj-$(CONFIG_INPUT_DRV2667_HAPTICS) += drv2667.o obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o diff --git a/drivers/input/misc/e3x0-button.c b/drivers/input/misc/e3x0-button.c new file mode 100644 index 0000000..0022f6a --- /dev/null +++ b/drivers/input/misc/e3x0-button.c @@ -0,0 +1,153 @@ +/* + * Copyright (c) 2014, National Instruments Corp. All rights reserved. + * + * Driver for NI Ettus Research USRP E3x0 Button Driver + * + * 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; version 2 of the License. + * + * 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 + +/** + * struct e3x0_button - e3x0 button information + * @input_dev: pointer to input device + * @irq_press: irq number for press event + * @irq_release: irq number for release event + */ +struct e3x0_button { + struct input_dev *idev; + int irq_press; + int irq_release; +}; + +static irqreturn_t e3x0_button_handler(int irq, void *data) +{ + struct e3x0_button *button = data; + + if (irq == button->irq_press) + input_report_key(button->idev, KEY_POWER, 1); + else if (irq == button->irq_release) + input_report_key(button->idev, KEY_POWER, 0); + + input_sync(button->idev); + + return IRQ_HANDLED; +} + +static int e3x0_button_probe(struct platform_device *pdev) +{ + struct e3x0_button *button; + struct input_dev *input; + int irq_press, irq_release; + int error; + + irq_press = platform_get_irq_byname(pdev, "press"); + if (irq_press < 0) { + dev_err(&pdev->dev, "No IRQ for 'press', error=%d\n", + irq_press); + return irq_press; + } + + irq_release = platform_get_irq_byname(pdev, "release"); + if (irq_release < 0) { + dev_err(&pdev->dev, "No IRQ for 'release', error=%d\n", + irq_release); + return irq_release; + } + + button = devm_kzalloc(&pdev->dev, sizeof(*button), + GFP_KERNEL); + if (!button) + return -ENOMEM; + + input = devm_input_allocate_device(&pdev->dev); + if (!input) + return -ENOMEM; + + button->idev = input; + button->irq_press = irq_press; + button->irq_release = irq_release; + + input->name = "NI Ettus Research USRP E3x0 Button Driver"; + input->phys = "e3x0_button/input0"; + input->dev.parent = &pdev->dev; + + input_set_capability(input, EV_KEY, KEY_POWER); + + error = devm_request_irq(&pdev->dev, button->irq_press, + e3x0_button_handler, 0, + "e3x0-button", button); + if (error < 0) { + dev_err(&pdev->dev, "Failed to request 'press' IRQ#%d: %d\n", + button->irq_press, error); + return error; + } + + error = devm_request_irq(&pdev->dev, button->irq_release, + e3x0_button_handler, 0, + "e3x0-button", button); + if (error < 0) { + dev_err(&pdev->dev, "Failed to request 'release' IRQ#%d: %d\n", + button->irq_release, error); + return error; + } + + error = input_register_device(button->idev); + if (error) { + dev_err(&pdev->dev, "Can't register input device: %d\n", error); + return error; + } + + platform_set_drvdata(pdev, button); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id e3x0_button_match[] = { + { .compatible = "ettus,e3x0-button", }, + {} +}; +MODULE_DEVICE_TABLE(of, e3x0_button_match); +#endif + +static struct platform_driver e3x0_button_driver = { + .driver = { + .name = "e3x0-button", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(e3x0_button_match), + }, + .probe = e3x0_button_probe, +}; + +static int __init e3x0_button_init(void) +{ + pr_info("e3x0-button: Copyright (c) 2014 National Instruments Corp"); + return platform_driver_register(&e3x0_button_driver); +} + +static void e3x0_button_exit(void) +{ + platform_driver_unregister(&e3x0_button_driver); +} + +module_init(e3x0_button_init); +module_exit(e3x0_button_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Moritz Fischer "); +MODULE_DESCRIPTION("NI Ettus Research USRP E3x0 Button driver"); +MODULE_ALIAS("platform:e3x0-button");