From patchwork Wed Feb 10 19:22:59 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 8274131 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6256EBEEE5 for ; Wed, 10 Feb 2016 19:23:13 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8F42B203A4 for ; Wed, 10 Feb 2016 19:23:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A224B2039E for ; Wed, 10 Feb 2016 19:23:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753595AbcBJTXI (ORCPT ); Wed, 10 Feb 2016 14:23:08 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:44894 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753103AbcBJTXH (ORCPT ); Wed, 10 Feb 2016 14:23:07 -0500 Received: from debutante.sirena.org.uk ([2a01:348:6:8808:fab::3] helo=debutante) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1aTaLt-0007T4-TJ; Wed, 10 Feb 2016 19:23:02 +0000 Received: from broonie by debutante with local (Exim 4.86) (envelope-from ) id 1aTaLr-0000lF-1D; Wed, 10 Feb 2016 19:22:59 +0000 From: Mark Brown To: Stephan Olbrich , Mark Brown Cc: linux-spi@vger.kernel.org In-Reply-To: <1455041435-8015-3-git-send-email-stephanolbrich@gmx.de> Message-Id: Date: Wed, 10 Feb 2016 19:22:59 +0000 X-SA-Exim-Connect-IP: 2a01:348:6:8808:fab::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Subject: Applied "spi: bcm2835aux: disable tx fifo empty irq" to the spi tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch spi: bcm2835aux: disable tx fifo empty irq has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From f29ab1845f3e2684ba1c6de6c3bd5198e4b1459c Mon Sep 17 00:00:00 2001 From: Stephan Olbrich Date: Tue, 9 Feb 2016 19:10:33 +0100 Subject: [PATCH] spi: bcm2835aux: disable tx fifo empty irq The tx empty irq can be disabled when all data was copied. This prevents unnecessary interrupts while the last bytes are sent. Signed-off-by: Stephan Olbrich Reviewed-by: Eric Anholt Signed-off-by: Mark Brown --- drivers/spi/spi-bcm2835aux.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi-bcm2835aux.c b/drivers/spi/spi-bcm2835aux.c index 7de6f8472a81..e1b2fec1db63 100644 --- a/drivers/spi/spi-bcm2835aux.c +++ b/drivers/spi/spi-bcm2835aux.c @@ -212,6 +212,12 @@ static irqreturn_t bcm2835aux_spi_interrupt(int irq, void *dev_id) ret = IRQ_HANDLED; } + if (!bs->tx_len) { + /* disable tx fifo empty interrupt */ + bcm2835aux_wr(bs, BCM2835_AUX_SPI_CNTL1, bs->cntl[1] | + BCM2835_AUX_SPI_CNTL1_IDLE); + } + /* and if rx_len is 0 then wake up completion and disable spi */ if (!bs->rx_len) { bcm2835aux_spi_reset_hw(bs);