From patchwork Fri Jul 13 08:32:43 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Qiao Zhou X-Patchwork-Id: 1194401 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id F311DDFFFD for ; Fri, 13 Jul 2012 08:34:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753253Ab2GMIeO (ORCPT ); Fri, 13 Jul 2012 04:34:14 -0400 Received: from na3sys009aog118.obsmtp.com ([74.125.149.244]:52072 "HELO na3sys009aog118.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753565Ab2GMIeI (ORCPT ); Fri, 13 Jul 2012 04:34:08 -0400 Received: from MSI-MTA.marvell.com ([65.219.4.132]) by na3sys009aob118.postini.com ([74.125.148.12]) with SMTP ID DSNKT//dfsisLmz4jRN7aooRXdzKgukH/wmK@postini.com; Fri, 13 Jul 2012 01:34:08 PDT Received: from maili.marvell.com ([10.68.76.210]) by MSI-MTA.marvell.com with Microsoft SMTPSVC(6.0.3790.3959); Fri, 13 Jul 2012 01:32:53 -0700 Received: from localhost (unknown [10.38.36.111]) by maili.marvell.com (Postfix) with ESMTP id 04CAD4E50D; Fri, 13 Jul 2012 01:32:53 -0700 (PDT) From: Qiao Zhou To: dmitry.torokhov@gmail.com, sameo@linux.intel.com, linux-input@vger.kernel.org Cc: Qiao Zhou Subject: [PATCH V9] input: add onkey support to 88PM80X PMIC Date: Fri, 13 Jul 2012 16:32:43 +0800 Message-Id: <1342168363-14299-2-git-send-email-zhouqiao@marvell.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1342168363-14299-1-git-send-email-zhouqiao@marvell.com> References: <1342168363-14299-1-git-send-email-zhouqiao@marvell.com> X-OriginalArrivalTime: 13 Jul 2012 08:32:53.0820 (UTC) FILETIME=[18BF47C0:01CD60D2] Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org add onkey support to MARVELL 88PM80X PMIC. Signed-off-by: Qiao Zhou --- drivers/input/misc/88pm80x_onkey.c | 167 ++++++++++++++++++++++++++++++++++++ drivers/input/misc/Kconfig | 10 ++ drivers/input/misc/Makefile | 1 + 3 files changed, 178 insertions(+), 0 deletions(-) create mode 100644 drivers/input/misc/88pm80x_onkey.c diff --git a/drivers/input/misc/88pm80x_onkey.c b/drivers/input/misc/88pm80x_onkey.c new file mode 100644 index 0000000..e844c14 --- /dev/null +++ b/drivers/input/misc/88pm80x_onkey.c @@ -0,0 +1,167 @@ +/* + * Marvell 88PM80x ONKEY driver + * + * Copyright (C) 2012 Marvell International Ltd. + * Haojian Zhuang + * Qiao Zhou + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file "COPYING" in the main directory of this + * archive for more details. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include + +#define PM800_LONG_ONKEY_EN (1 << 0) +#define PM800_LONG_KEY_DELAY (8) /* 1 .. 16 seconds */ +#define PM800_LONKEY_PRESS_TIME ((PM800_LONG_KEY_DELAY-1) << 4) +#define PM800_LONKEY_PRESS_TIME_MASK (0xF0) +#define PM800_SW_PDOWN (1 << 5) + +struct pm80x_onkey_info { + struct input_dev *idev; + struct pm80x_chip *pm80x; + struct regmap *map; + int irq; +}; + +/* 88PM80x gives us an interrupt when ONKEY is held */ +static irqreturn_t pm80x_onkey_handler(int irq, void *data) +{ + struct pm80x_onkey_info *info = data; + int ret = 0; + unsigned int val; + + ret = regmap_read(info->map, PM800_STATUS_1, &val); + if (ret < 0) { + pr_err("%s: failed to read status: %d\n", __func__, ret); + return IRQ_NONE; + } + val &= PM800_ONKEY_STS1; + + input_report_key(info->idev, KEY_POWER, val); + input_sync(info->idev); + + return IRQ_HANDLED; +} + +static SIMPLE_DEV_PM_OPS(pm80x_onkey_pm_ops, pm80x_dev_suspend, + pm80x_dev_resume); + +static int __devinit pm80x_onkey_probe(struct platform_device *pdev) +{ + + struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); + struct pm80x_onkey_info *info; + int err; + + info = kzalloc(sizeof(struct pm80x_onkey_info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->pm80x = chip; + + info->irq = platform_get_irq(pdev, 0); + if (info->irq < 0) { + dev_err(&pdev->dev, "No IRQ resource!\n"); + err = -EINVAL; + goto out; + } + + info->map = info->pm80x->regmap; + if (!info->map) { + dev_err(&pdev->dev, "no regmap!\n"); + err = -EINVAL; + goto out; + } + + info->idev = input_allocate_device(); + if (!info->idev) { + dev_err(&pdev->dev, "Failed to allocate input dev\n"); + err = -ENOMEM; + goto out; + } + + info->idev->name = "88pm80x_on"; + info->idev->phys = "88pm80x_on/input0"; + info->idev->id.bustype = BUS_I2C; + info->idev->dev.parent = &pdev->dev; + info->idev->evbit[0] = BIT_MASK(EV_KEY); + __set_bit(KEY_POWER, info->idev->keybit); + + err = pm80x_request_irq(info->pm80x, info->irq, pm80x_onkey_handler, + IRQF_ONESHOT, "onkey", info); + if (err < 0) { + dev_err(&pdev->dev, "Failed to request IRQ: #%d: %d\n", + info->irq, err); + goto out_reg; + } + + err = input_register_device(info->idev); + if (err) { + dev_err(&pdev->dev, "Can't register input device: %d\n", err); + goto out_irq; + } + + platform_set_drvdata(pdev, info); + + /* Enable long onkey detection */ + regmap_update_bits(info->map, PM800_RTC_MISC4, PM800_LONG_ONKEY_EN, + PM800_LONG_ONKEY_EN); + /* Set 8-second interval */ + regmap_update_bits(info->map, PM800_RTC_MISC3, + PM800_LONKEY_PRESS_TIME_MASK, + PM800_LONKEY_PRESS_TIME); + + device_init_wakeup(&pdev->dev, 1); + return 0; + +out_irq: + pm80x_free_irq(info->pm80x, info->irq, info); +out_reg: + input_free_device(info->idev); +out: + kfree(info); + return err; +} + +static int __devexit pm80x_onkey_remove(struct platform_device *pdev) +{ + struct pm80x_onkey_info *info = platform_get_drvdata(pdev); + + pm80x_free_irq(info->pm80x, info->irq, info); + input_unregister_device(info->idev); + kfree(info); + return 0; +} + +static struct platform_driver pm80x_onkey_driver = { + .driver = { + .name = "88pm80x-onkey", + .owner = THIS_MODULE, + .pm = &pm80x_onkey_pm_ops, + }, + .probe = pm80x_onkey_probe, + .remove = __devexit_p(pm80x_onkey_remove), +}; + +module_platform_driver(pm80x_onkey_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Marvell 88PM80x ONKEY driver"); +MODULE_AUTHOR("Qiao Zhou "); +MODULE_ALIAS("platform:88pm80x-onkey"); diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 7faf4a7..7c0f1ec 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -22,6 +22,16 @@ config INPUT_88PM860X_ONKEY To compile this driver as a module, choose M here: the module will be called 88pm860x_onkey. +config INPUT_88PM80X_ONKEY + tristate "88PM80x ONKEY support" + depends on MFD_88PM800 + help + Support the ONKEY of Marvell 88PM80x PMICs as an input device + reporting power button status. + + To compile this driver as a module, choose M here: the module + will be called 88pm80x_onkey. + config INPUT_AB8500_PONKEY tristate "AB8500 Pon (PowerOn) Key" depends on AB8500_CORE diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile index f55cdf4..83fe6f5 100644 --- a/drivers/input/misc/Makefile +++ b/drivers/input/misc/Makefile @@ -5,6 +5,7 @@ # Each configuration option enables a list of files. obj-$(CONFIG_INPUT_88PM860X_ONKEY) += 88pm860x_onkey.o +obj-$(CONFIG_INPUT_88PM80X_ONKEY) += 88pm80x_onkey.o obj-$(CONFIG_INPUT_AB8500_PONKEY) += ab8500-ponkey.o obj-$(CONFIG_INPUT_AD714X) += ad714x.o obj-$(CONFIG_INPUT_AD714X_I2C) += ad714x-i2c.o