From patchwork Tue Nov 10 08:50:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 321539 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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 7A27EC388F7 for ; Tue, 10 Nov 2020 08:51:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C94220780 for ; Tue, 10 Nov 2020 08:51:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730094AbgKJIu5 (ORCPT ); Tue, 10 Nov 2020 03:50:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730302AbgKJIuu (ORCPT ); Tue, 10 Nov 2020 03:50:50 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25A4FC0613D1 for ; Tue, 10 Nov 2020 00:50:50 -0800 (PST) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kcPMT-0004bn-Bm; Tue, 10 Nov 2020 09:50:45 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1kcPMS-0004Fs-4G; Tue, 10 Nov 2020 09:50:44 +0100 From: Oleksij Rempel To: Dmitry Torokhov , Alexandru Ardelean , Mark Brown Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-spi@vger.kernel.org, David Jander Subject: [PATCH v1 0/2] Input: ads7846: reduce SPI related CPU load Date: Tue, 10 Nov 2020 09:50:39 +0100 Message-Id: <20201110085041.16303-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-input@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org changes v2: - add back settle_delay_usecs support - execute power down on the end of the main transfer. - make it work with 2.5MHz SPI clock This series is optimizing SPI transfer related CPU load. Oleksij Rempel (2): Input: ads7846: convert to full duplex Input: ads7846: convert to one message drivers/input/touchscreen/ads7846.c | 456 ++++++++++++---------------- 1 file changed, 199 insertions(+), 257 deletions(-)