From patchwork Tue Dec 24 00:58:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunihiko Hayashi X-Patchwork-Id: 11308931 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 A9C6B921 for ; Tue, 24 Dec 2019 00:59:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8053A206D3 for ; Tue, 24 Dec 2019 00:59:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="olHA3/sk" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8053A206D3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=mnnEJq/1eeC2ATyHR479aNmLYx8H+8GatjkpWLSQMIg=; b=olH A3/skLd8OE7Cb9axbxy4En7lgpWCjvIq4fyb0F9piH1IcW31hG5yLhrj65uHaaSvSfmeqNKvBV1kg kYu8d2IERJroXi2awmEft+I9MA6ovAHi0+PMGABFWw8JDdtAxSqKmjrSjymBMm2ubsHmQ2lL7idKw 2y98tjZY8CpYTaiFO75nrXIndtjk1Q7Aoq9mrbxb3+y0MjOpJcoA6exYZPOB2oihuBNiHYF3rj917 xUQHFSD2yIzzwet9Jbw7rt/mff9DtE5LHlvq1Mf59MoRTpFoG4vWyJ6RbJEgUfrIzoZ+02YD+piMl V4ecVtP6xGQCwPhUeDPDPEMc6DZ1G9Q==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ijYXL-0002Rl-PR; Tue, 24 Dec 2019 00:58:59 +0000 Received: from mx.socionext.com ([202.248.49.38]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ijYXB-0002HI-4z for linux-arm-kernel@lists.infradead.org; Tue, 24 Dec 2019 00:58:50 +0000 Received: from unknown (HELO iyokan-ex.css.socionext.com) ([172.31.9.54]) by mx.socionext.com with ESMTP; 24 Dec 2019 09:58:45 +0900 Received: from mail.mfilter.local (m-filter-1 [10.213.24.61]) by iyokan-ex.css.socionext.com (Postfix) with ESMTP id 2FEE1603AB; Tue, 24 Dec 2019 09:58:45 +0900 (JST) Received: from 172.31.9.51 (172.31.9.51) by m-FILTER with ESMTP; Tue, 24 Dec 2019 09:59:24 +0900 Received: from plum.e01.socionext.com (unknown [10.213.132.32]) by kinkan.css.socionext.com (Postfix) with ESMTP id B36781A01CF; Tue, 24 Dec 2019 09:58:44 +0900 (JST) From: Kunihiko Hayashi To: Mark Brown , linux-spi@vger.kernel.org Subject: [PATCH 0/5] spi: uniphier: Introduce DMA transfer mode Date: Tue, 24 Dec 2019 09:58:22 +0900 Message-Id: <1577149107-30670-1-git-send-email-hayashi.kunihiko@socionext.com> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191223_165849_313337_31D3C636 X-CRM114-Status: UNSURE ( 8.25 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [202.248.49.38 listed in list.dnswl.org] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kunihiko Hayashi , Masami Hiramatsu , Jassi Brar , Keiji Hayashibara , linux-kernel@vger.kernel.org, Masahiro Yamada , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This series introduces DMA transfer mode into UniPhier SPI driver. This only supports UniPhier XDMAC implemented in the SoC. The DMA transfer mode uses FIFO threshold as a trigger to start DMA transfer, however, the FIFO is limited to one word width due to alignment restiction of the DMA controller. Kunihiko Hayashi (5): spi: uniphier: Fix FIFO threshold spi: uniphier: Change argument of irq functions to private structure spi: uniphier: Add handle_err callback function spi: uniphier: Add SPI_LOOP to the capabilities spi: uniphier: Add DMA transfer mode support drivers/spi/spi-uniphier.c | 261 +++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 241 insertions(+), 20 deletions(-)