From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_2 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70BBEC4320E for ; Mon, 30 Aug 2021 13:56:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 542E260ED8 for ; Mon, 30 Aug 2021 13:56:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236858AbhH3N5r (ORCPT ); Mon, 30 Aug 2021 09:57:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:52506 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236846AbhH3N5r (ORCPT ); Mon, 30 Aug 2021 09:57:47 -0400 Received: from jic23-huawei (cpc108967-cmbg20-2-0-cust86.5-4.cable.virginm.net [81.101.6.87]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3311D604D7; Mon, 30 Aug 2021 13:56:47 +0000 (UTC) Date: Mon, 30 Aug 2021 14:59:59 +0100 From: Jonathan Cameron To: Miquel Raynal Cc: Lars-Peter Clausen , Peter Meerwald-Stadler , Rob Herring , Lee Jones , bcousson@baylibre.com, Tony Lindgren , Tero Kristo , Michael Turquette , Stephen Boyd , Thomas Petazzoni , "Ryan J . Barnett" , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-omap@vger.kernel.org, linux-clk@vger.kernel.org Subject: Re: [PATCH 25/40] mfd: ti_am335x_tscadc: Add a boolean to clarify the presence of a touchscreen Message-ID: <20210830145959.03bed30a@jic23-huawei> In-Reply-To: <20210825152518.379386-26-miquel.raynal@bootlin.com> References: <20210825152518.379386-1-miquel.raynal@bootlin.com> <20210825152518.379386-26-miquel.raynal@bootlin.com> X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On Wed, 25 Aug 2021 17:25:03 +0200 Miquel Raynal wrote: > Just checking the number of wires will soon not be enough, add a boolean > to indicated the actual use or not of the touchscreen. > > Signed-off-by: Miquel Raynal > --- > drivers/mfd/ti_am335x_tscadc.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c > index 2f934fd2154a..30f53cdb41f8 100644 > --- a/drivers/mfd/ti_am335x_tscadc.c > +++ b/drivers/mfd/ti_am335x_tscadc.c > @@ -121,6 +121,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > const __be32 *cur; > struct clk *clk; > u32 val; > + bool use_tsc = false; > int tscmag_wires = 0, adc_channels = 0, readouts = 0, cell_idx = 0; > int total_channels, err; > > @@ -141,6 +142,8 @@ static int ti_tscadc_probe(struct platform_device *pdev) > node = of_get_child_by_name(pdev->dev.of_node, "tsc"); > of_property_read_u32(node, "ti,wires", &tscmag_wires); > of_property_read_u32(node, "ti,coordiante-readouts", &readouts); > + if (tscmag_wires) > + use_tsc = true; > > node = of_get_child_by_name(pdev->dev.of_node, "adc"); > of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) { > @@ -163,7 +166,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > return -EINVAL; > } > > - if (readouts * 2 + 2 + adc_channels > 16) { > + if (use_tsc && (readouts * 2 + 2 + adc_channels > 16)) { This one is adding a check that wasn't there before. The description should mention why it will now be necessary and isn't a bug... > dev_err(&pdev->dev, "Too many step configurations requested\n"); > return -EINVAL; > } > @@ -218,7 +221,7 @@ static int ti_tscadc_probe(struct platform_device *pdev) > tscadc->ctrl = CNTRLREG_TSC_STEPCONFIGWRT | CNTRLREG_STEPID; > regmap_write(tscadc->regmap, REG_CTRL, tscadc->ctrl); > > - if (tscmag_wires > 0) { > + if (use_tsc) { > tscadc->ctrl |= CNTRLREG_TSC_ENB; > if (tscmag_wires == 5) > tscadc->ctrl |= CNTRLREG_TSC_5WIRE;