From patchwork Tue Mar 7 15:57:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 661950 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B18FFC678D5 for ; Tue, 7 Mar 2023 16:01:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231493AbjCGQBp (ORCPT ); Tue, 7 Mar 2023 11:01:45 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43358 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231530AbjCGQBY (ORCPT ); Tue, 7 Mar 2023 11:01:24 -0500 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8C619911D4 for ; Tue, 7 Mar 2023 07:58:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1678204681; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=sCuLprOqY+zwl2VTAGoTHpY98hsrcBRrmIlRy7xdlKw=; b=T9Uuna8/1CJvCwSBsLhoBSUqGsaq6HXTBuv0aAwnZ/M8vWV6TpR3g8MvUCpx6o++Nr+Z4L qO1ONrj/UGHviz0ekcoihNDy2aW+rucflH+CRi3bqJ3xAkpg75AYfX4vLpR3V7TdWF+71h ffwXAU8ldxlhVjqtrCYpZu/5XYWlthc= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-111-Z56v-Bw8PX--DDw3uv4L-g-1; Tue, 07 Mar 2023 10:57:58 -0500 X-MC-Unique: Z56v-Bw8PX--DDw3uv4L-g-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 631498019DF; Tue, 7 Mar 2023 15:57:58 +0000 (UTC) Received: from x1.nl (unknown [10.39.193.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id 727B81121314; Tue, 7 Mar 2023 15:57:57 +0000 (UTC) From: Hans de Goede To: Dmitry Torokhov Cc: Hans de Goede , linux-input@vger.kernel.org Subject: [PATCH v3 1/2] Input: hideep - Silence error in SW_RESET() Date: Tue, 7 Mar 2023 16:57:54 +0100 Message-Id: <20230307155755.136968-2-hdegoede@redhat.com> In-Reply-To: <20230307155755.136968-1-hdegoede@redhat.com> References: <20230307155755.136968-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On some models the first HIDEEP_SYSCON_WDT_CON write alone is enough to cause the controller to reset, causing the second write to fail: i2c-hideep_ts: write to register 0x52000014 (0x000001) failed: -121 Switch this write to a raw hideep_pgm_w_mem() to avoid an error getting logged in this case. Signed-off-by: Hans de Goede --- drivers/input/touchscreen/hideep.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/hideep.c b/drivers/input/touchscreen/hideep.c index ff4bb4c14898..373c1269485f 100644 --- a/drivers/input/touchscreen/hideep.c +++ b/drivers/input/touchscreen/hideep.c @@ -271,9 +271,14 @@ static int hideep_pgm_w_reg(struct hideep_ts *ts, u32 addr, u32 val) #define SW_RESET_IN_PGM(clk) \ { \ + __be32 data = cpu_to_be32(0x01); \ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CNT, (clk)); \ hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x03); \ - hideep_pgm_w_reg(ts, HIDEEP_SYSCON_WDT_CON, 0x01); \ + /* \ + * The first write may already cause a reset, use a raw \ + * write for the second write to avoid error logging. \ + */ \ + hideep_pgm_w_mem(ts, HIDEEP_SYSCON_WDT_CON, &data, 1); \ } #define SET_FLASH_PIO(ce) \