From patchwork Sun May 3 17:14:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Artur Rojek X-Patchwork-Id: 11524621 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2AA4B17EF for ; Sun, 3 May 2020 17:06:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13014206B9 for ; Sun, 3 May 2020 17:06:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728917AbgECRFz (ORCPT ); Sun, 3 May 2020 13:05:55 -0400 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:55991 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728783AbgECRFy (ORCPT ); Sun, 3 May 2020 13:05:54 -0400 X-Originating-IP: 195.189.32.242 Received: from pc.localdomain (unknown [195.189.32.242]) (Authenticated sender: contact@artur-rojek.eu) by relay2-d.mail.gandi.net (Postfix) with ESMTPSA id 6E4F24000A; Sun, 3 May 2020 17:05:50 +0000 (UTC) From: Artur Rojek To: Dmitry Torokhov , Rob Herring , Mark Rutland , Jonathan Cameron , Paul Cercueil , Andy Shevchenko Cc: Heiko Stuebner , Ezequiel Garcia , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Artur Rojek Subject: [PATCH v6 3/7] IIO: Ingenic JZ47xx: Add xlate cb to retrieve correct channel idx Date: Sun, 3 May 2020 19:14:47 +0200 Message-Id: <20200503171451.44034-3-contact@artur-rojek.eu> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200503171451.44034-1-contact@artur-rojek.eu> References: <20200503171451.44034-1-contact@artur-rojek.eu> MIME-Version: 1.0 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Provide an of_xlate callback in order to retrieve the correct channel specifier index from the IIO channels array. Signed-off-by: Artur Rojek Tested-by: Paul Cercueil --- Changes: v2-v6: no change drivers/iio/adc/ingenic-adc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c index 6c3bbba7c44b..0eee4b4fb96c 100644 --- a/drivers/iio/adc/ingenic-adc.c +++ b/drivers/iio/adc/ingenic-adc.c @@ -400,6 +400,21 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev, } } +static int ingenic_adc_of_xlate(struct iio_dev *iio_dev, + const struct of_phandle_args *iiospec) +{ + int i; + + if (!iiospec->args_count) + return -EINVAL; + + for (i = 0; i < iio_dev->num_channels; ++i) + if (iio_dev->channels[i].channel == iiospec->args[0]) + return i; + + return -EINVAL; +} + static void ingenic_adc_clk_cleanup(void *data) { clk_unprepare(data); @@ -409,6 +424,7 @@ static const struct iio_info ingenic_adc_info = { .write_raw = ingenic_adc_write_raw, .read_raw = ingenic_adc_read_raw, .read_avail = ingenic_adc_read_avail, + .of_xlate = ingenic_adc_of_xlate, }; static const struct iio_chan_spec ingenic_channels[] = {