From patchwork Mon Feb 26 19:37:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 10243105 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 D0C7E60211 for ; Mon, 26 Feb 2018 19:37:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BF51729CB5 for ; Mon, 26 Feb 2018 19:37:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B418C29D5E; Mon, 26 Feb 2018 19:37:42 +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=ham 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 202EF29CB5 for ; Mon, 26 Feb 2018 19:37:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751710AbeBZThl (ORCPT ); Mon, 26 Feb 2018 14:37:41 -0500 Received: from mga04.intel.com ([192.55.52.120]:8059 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751812AbeBZThj (ORCPT ); Mon, 26 Feb 2018 14:37:39 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Feb 2018 11:37:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,397,1515484800"; d="scan'208";a="21214502" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga006.jf.intel.com with ESMTP; 26 Feb 2018 11:37:36 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id EEF02D0; Mon, 26 Feb 2018 21:37:35 +0200 (EET) From: Andy Shevchenko To: Jonathan Cameron , linux-iio@vger.kernel.org, Hartmut Knaack , Lars-Peter Clausen , Peter Meerwald-Stadler Cc: Andy Shevchenko Subject: [PATCH v1] iio: proximity: sx9500: Add GPIO ACPI mapping table Date: Mon, 26 Feb 2018 21:37:35 +0200 Message-Id: <20180226193735.70308-1-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.16.1 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In order to satisfy GPIO ACPI library requirements convert users of gpiod_get_index() to correctly behave when there no mapping is provided by firmware. Here we add explicit mapping between _CRS GpioIo() resources and their names used in the driver. Signed-off-by: Andy Shevchenko --- drivers/iio/proximity/sx9500.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c index b8a2c2c8cac5..ff80409e0c44 100644 --- a/drivers/iio/proximity/sx9500.c +++ b/drivers/iio/proximity/sx9500.c @@ -32,9 +32,6 @@ #define SX9500_DRIVER_NAME "sx9500" #define SX9500_IRQ_NAME "sx9500_event" -#define SX9500_GPIO_INT "interrupt" -#define SX9500_GPIO_RESET "reset" - /* Register definitions. */ #define SX9500_REG_IRQ_SRC 0x00 #define SX9500_REG_STAT 0x01 @@ -866,26 +863,44 @@ static int sx9500_init_device(struct iio_dev *indio_dev) return sx9500_init_compensation(indio_dev); } +static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; +static const struct acpi_gpio_params interrupt_gpios = { 2, 0, false }; + +static const struct acpi_gpio_mapping acpi_sx9500_gpios[] = { + { "reset-gpios", &reset_gpios, 1 }, + /* + * Some platforms have a bug in ACPI GPIO description making IRQ + * GPIO to be output only. Ask the GPIO core to ignore this limit. + */ + { "interrupt-gpios", &interrupt_gpios, 1, ACPI_GPIO_QUIRK_NO_IO_RESTRICTION }, + { }, +}; + static void sx9500_gpio_probe(struct i2c_client *client, struct sx9500_data *data) { struct gpio_desc *gpiod_int; struct device *dev; + int ret; if (!client) return; dev = &client->dev; + ret = devm_acpi_dev_add_driver_gpios(dev, acpi_sx9500_gpios); + if (ret) + dev_dbg(dev, "Unable to add GPIO mapping table\n"); + if (client->irq <= 0) { - gpiod_int = devm_gpiod_get(dev, SX9500_GPIO_INT, GPIOD_IN); + gpiod_int = devm_gpiod_get(dev, "interrupt", GPIOD_IN); if (IS_ERR(gpiod_int)) dev_err(dev, "gpio get irq failed\n"); else client->irq = gpiod_to_irq(gpiod_int); } - data->gpiod_rst = devm_gpiod_get(dev, SX9500_GPIO_RESET, GPIOD_OUT_HIGH); + data->gpiod_rst = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(data->gpiod_rst)) { dev_warn(dev, "gpio get reset pin failed\n"); data->gpiod_rst = NULL;