From patchwork Fri Oct 26 13:25:34 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishad Kamdar X-Patchwork-Id: 10657353 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F072D13A9 for ; Fri, 26 Oct 2018 13:25:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E488E2C207 for ; Fri, 26 Oct 2018 13:25:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D8A302C24B; Fri, 26 Oct 2018 13:25:44 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,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 7F4F82C26E for ; Fri, 26 Oct 2018 13:25:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726198AbeJZWCs (ORCPT ); Fri, 26 Oct 2018 18:02:48 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:34733 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726179AbeJZWCs (ORCPT ); Fri, 26 Oct 2018 18:02:48 -0400 Received: by mail-pg1-f195.google.com with SMTP id g12-v6so544520pgs.1; Fri, 26 Oct 2018 06:25:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=1gAAOpGWm9oJGIYTfyIoPjoxdi22bxF2tUaxSkoBGoo=; b=lBmlYwwuXzK4Tuni3ihHL/7xTuf0GvaOQ5legFn3wsotwFzo4j3gTS/MS51SV5G0YS qHIACa0lg7J8Okd7iQWClE7nfAn0IspAyv6Vg1pXIqLLPF33bDpv9/Zn/1DpnE3pGO0W Wj69ZOnctam/3MFXPZzo0C8nRMS3z0depjgpXmJtqNGeolkwa7Ow59QUchd55Pwaz8o+ 0Or/LMYd7lOvZMN/UP/eJT6nL4b0zq9Zs4WM1srzg9uUevrbPfPcsGDCpvbmGYNquNvw JuYBKBBJt+omfT04Bln+Bx1RMYL75UNu2TUA+jF2/4ClC39dJvX1IUZEW49Eh5Gkd/rU tcEw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=1gAAOpGWm9oJGIYTfyIoPjoxdi22bxF2tUaxSkoBGoo=; b=JozOVCqeTA283D947yKMHso23biqKDa+sGPoTt1ua1qykC4ATnCYnnN3WZ8hEmK9z1 J0H4sOyXr3iLLXPh0HNaux3IxfKguCXoIsrp6iuveIcHD4G1uwNmtT3WzVm3XwlWIDr1 0Pmq4SoBhRF8KN4Z/FsXlshHSHil7dg8yHeR40irOMaOAR5syjurEMZdWF3SNCVE90cs hMmGpvDyKg3EuKtvHy45RQxtK3yyrHJHpc1ZyyEVgm2TfX+35bZrGiqs2d69TuyzsvEE QjtYJXzoJI6hAG7yntEirxxCsE1GwVgVigB0g3F+4s5GG1nGLzVY/jLlWasAfa4VpRqF UiRw== X-Gm-Message-State: AGRZ1gKc/tpOLs9AlLCTtEfPoHHGQZj3kOo3JpjQevACnGjMeH9uLJIr dfn/afFB9BBTHxqs2mdW+iW33rg1a9o4hA== X-Google-Smtp-Source: AJdET5eNDCdFwJOiw/KIysJQJLHoLtXicX9gq1nt0ftQi6RrVKOT0q9s1yUyGgKH+p9fC933Uql9PQ== X-Received: by 2002:a65:5608:: with SMTP id l8-v6mr3528968pgs.433.1540560342524; Fri, 26 Oct 2018 06:25:42 -0700 (PDT) Received: from nishad ([106.51.27.228]) by smtp.gmail.com with ESMTPSA id z11-v6sm18151555pfd.99.2018.10.26.06.25.38 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 26 Oct 2018 06:25:41 -0700 (PDT) Date: Fri, 26 Oct 2018 18:55:34 +0530 From: Nishad Kamdar To: Slawomir Stepien Cc: Lars-Peter Clausen , Michael Hennerich , Jonathan Cameron , Hartmut Knaack , Peter Meerwald-Stadler , Greg Kroah-Hartman , linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: [PATCH v5 2/2] staging: iio: ad2s1210: Add device tree support. Message-ID: <1dc6fdf4626e7cf1ca4933fe3008cb3cd267149b.1540489369.git.nishadkamdar@gmail.com> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) 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 Add device tree table for matching vendor ID and support for retrieving platform data from device tree. Signed-off-by: Nishad Kamdar --- drivers/staging/iio/resolver/ad2s1210.c | 43 ++++++++++++++++++++++++- 1 file changed, 42 insertions(+), 1 deletion(-) diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c index 93c3c70ce62e..9fd5461c4ed0 100644 --- a/drivers/staging/iio/resolver/ad2s1210.c +++ b/drivers/staging/iio/resolver/ad2s1210.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -669,6 +670,27 @@ static int ad2s1210_setup_gpios(struct ad2s1210_state *st) return 0; } +#ifdef CONFIG_OF +static struct ad2s1210_platform_data *ad2s1210_parse_dt(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct ad2s1210_platform_data *pdata; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return NULL; + + pdata->gpioin = of_property_read_bool(np, "adi,gpioin"); + + return pdata; +} +#else +static struct ad2s1210_platform_data *ad2s1210_parse_dt(struct device *dev) +{ + return NULL; +} +#endif + static int ad2s1210_probe(struct spi_device *spi) { struct iio_dev *indio_dev; @@ -682,7 +704,19 @@ static int ad2s1210_probe(struct spi_device *spi) if (!indio_dev) return -ENOMEM; st = iio_priv(indio_dev); - st->pdata = spi->dev.platform_data; + if (spi->dev.of_node) { + st->pdata = ad2s1210_parse_dt(&spi->dev); + if (!st->pdata) + return -EINVAL; + } else { + st->pdata = spi->dev.platform_data; + } + + if (!st->pdata) { + dev_err(&spi->dev, "ad2s1210: no platform data supplied\n"); + return -EINVAL; + } + ret = ad2s1210_setup_gpios(st); if (ret < 0) return ret; @@ -724,6 +758,12 @@ static int ad2s1210_remove(struct spi_device *spi) return 0; } +static const struct of_device_id ad2s1210_of_match[] = { + { .compatible = "adi,ad2s1210", }, + { } +}; +MODULE_DEVICE_TABLE(of, ad2s1210_of_match); + static const struct spi_device_id ad2s1210_id[] = { { "ad2s1210" }, {} @@ -733,6 +773,7 @@ MODULE_DEVICE_TABLE(spi, ad2s1210_id); static struct spi_driver ad2s1210_driver = { .driver = { .name = DRV_NAME, + .of_match_table = of_match_ptr(ad2s1210_of_match), }, .probe = ad2s1210_probe, .remove = ad2s1210_remove,