From patchwork Tue Aug 22 05:57:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 9914259 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8F158600C5 for ; Tue, 22 Aug 2017 05:58:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7D63028694 for ; Tue, 22 Aug 2017 05:58:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 6FCDA287E3; Tue, 22 Aug 2017 05:58:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 136F828694 for ; Tue, 22 Aug 2017 05:58:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754625AbdHVF6T (ORCPT ); Tue, 22 Aug 2017 01:58:19 -0400 Received: from mx2.suse.de ([195.135.220.15]:50983 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752089AbdHVF5Y (ORCPT ); Tue, 22 Aug 2017 01:57:24 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 4F0C7AF20; Tue, 22 Aug 2017 05:57:22 +0000 (UTC) From: Takashi Iwai To: linux-kernel@vger.kernel.org Cc: Lee Jones , Dmitry Torokhov , "Rafael J . Wysocki" , Andy Shevchenko , Mika Westerberg , Johannes Stezenbach , linux-input@vger.kernel.org, linux-acpi@vger.kernel.org Subject: [PATCH 2/3] input/keyboard: Add support for Dollar Cove TI power button Date: Tue, 22 Aug 2017 07:57:09 +0200 Message-Id: <20170822055710.26515-3-tiwai@suse.de> X-Mailer: git-send-email 2.14.0 In-Reply-To: <20170822055710.26515-1-tiwai@suse.de> References: <20170822055710.26515-1-tiwai@suse.de> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This provides a new input driver for supporting the power button on Dollar Cove TI PMIC, found on Cherrytrail-based devices. The patch is based on the original work by Intel, found at: https://github.com/01org/ProductionKernelQuilts Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891 Signed-off-by: Takashi Iwai --- drivers/input/keyboard/Kconfig | 7 +++ drivers/input/keyboard/Makefile | 1 + drivers/input/keyboard/dc_ti_pwrbtn.c | 85 +++++++++++++++++++++++++++++++++++ 3 files changed, 93 insertions(+) create mode 100644 drivers/input/keyboard/dc_ti_pwrbtn.c diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 4c4ab1ced235..673748b3cc34 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -756,4 +756,11 @@ config KEYBOARD_BCM To compile this driver as a module, choose M here: the module will be called bcm-keypad. +config KEYBOARD_DC_TI_PWRBTN + tristate "Dollar Cove TI power button driver" + depends on INTEL_SOC_PMIC_DC_TI + help + Say Y here fi you want to have a power button driver for + Dollar Cove TI PMIC. + endif diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile index d2338bacdad1..fa473d241e5c 100644 --- a/drivers/input/keyboard/Makefile +++ b/drivers/input/keyboard/Makefile @@ -66,3 +66,4 @@ obj-$(CONFIG_KEYBOARD_TM2_TOUCHKEY) += tm2-touchkey.o obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o +obj-$(CONFIG_KEYBOARD_DC_TI_PWRBTN) += dc_ti_pwrbtn.o diff --git a/drivers/input/keyboard/dc_ti_pwrbtn.c b/drivers/input/keyboard/dc_ti_pwrbtn.c new file mode 100644 index 000000000000..a0900a440c92 --- /dev/null +++ b/drivers/input/keyboard/dc_ti_pwrbtn.c @@ -0,0 +1,85 @@ +/* + * Power button driver for Dollar Cove TI PMIC + * Copyright (C) 2014 Intel Corp + * Copyright (c) 2017 Takashi Iwai + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define DC_TI_SIRQ_REG 0x3 +#define SIRQ_PWRBTN_REL (1 << 0) + +#define DRIVER_NAME "dc_ti_pwrbtn" + +static irqreturn_t dc_ti_pwrbtn_interrupt(int irq, void *dev_id) +{ + struct input_dev *pwrbtn_input = dev_id; + struct device *dev = pwrbtn_input->dev.parent; + struct regmap *regmap = dev_get_drvdata(dev); + int state; + + if (!regmap_read(regmap, DC_TI_SIRQ_REG, &state)) { + dev_dbg(dev, "SIRQ_REG=0x%x\n", state); + state &= SIRQ_PWRBTN_REL; + input_event(pwrbtn_input, EV_KEY, KEY_POWER, !state); + input_sync(pwrbtn_input); + } + + return IRQ_HANDLED; +} + +static int dc_ti_pwrbtn_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct intel_soc_pmic *pmic = dev_get_drvdata(dev->parent); + struct input_dev *pwrbtn_input; + int irq; + int ret; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return -EINVAL; + pwrbtn_input = devm_input_allocate_device(dev); + if (!pwrbtn_input) + return -ENOMEM; + pwrbtn_input->name = pdev->name; + pwrbtn_input->phys = "dc-ti-power/input0"; + pwrbtn_input->id.bustype = BUS_HOST; + pwrbtn_input->dev.parent = dev; + input_set_capability(pwrbtn_input, EV_KEY, KEY_POWER); + ret = input_register_device(pwrbtn_input); + if (ret) + return ret; + + dev_set_drvdata(dev, pmic->regmap); + + ret = devm_request_threaded_irq(dev, irq, NULL, dc_ti_pwrbtn_interrupt, + 0, KBUILD_MODNAME, pwrbtn_input); + if (ret) + return ret; + + ret = enable_irq_wake(irq); + if (ret) + dev_warn(dev, "Can't enable IRQ as wake source: %d\n", ret); + + return 0; +} + +static struct platform_driver dc_ti_pwrbtn_driver = { + .driver = { + .name = DRIVER_NAME, + }, + .probe = dc_ti_pwrbtn_probe, +}; + +module_platform_driver(dc_ti_pwrbtn_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRIVER_NAME);