From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964992AbeEXHhp (ORCPT ); Thu, 24 May 2018 03:37:45 -0400 Received: from smtp01.smtpout.orange.fr ([80.12.242.123]:52530 "EHLO smtp.smtpout.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935767AbeEXHhm (ORCPT ); Thu, 24 May 2018 03:37:42 -0400 X-ME-Helo: belgarion.home X-ME-Auth: amFyem1pay5yb2JlcnRAb3JhbmdlLmZy X-ME-Date: Thu, 24 May 2018 09:07:40 +0200 X-ME-IP: 90.55.202.35 From: Robert Jarzmik To: Daniel Mack , Haojian Zhuang , Robert Jarzmik , Ezequiel Garcia , Boris Brezillon , David Woodhouse , Brian Norris , Marek Vasut , Richard Weinberger , Liam Girdwood , Mark Brown , Arnd Bergmann Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org, dmaengine@vger.kernel.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, netdev@vger.kernel.org, alsa-devel@alsa-project.org Subject: [PATCH v2 10/13] dmaengine: pxa: document pxad_param Date: Thu, 24 May 2018 09:07:00 +0200 Message-Id: <20180524070703.11901-11-robert.jarzmik@free.fr> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180524070703.11901-1-robert.jarzmik@free.fr> References: <20180524070703.11901-1-robert.jarzmik@free.fr> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add some documentation for the pxad_param structure, and describe the contract behind the minimal required priority of a DMA channel. Signed-off-by: Robert Jarzmik --- include/linux/dma/pxa-dma.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/linux/dma/pxa-dma.h b/include/linux/dma/pxa-dma.h index e56ec7af4fd7..9fc594f69eff 100644 --- a/include/linux/dma/pxa-dma.h +++ b/include/linux/dma/pxa-dma.h @@ -9,6 +9,15 @@ enum pxad_chan_prio { PXAD_PRIO_LOWEST, }; +/** + * struct pxad_param - dma channel request parameters + * @drcmr: requestor line number + * @prio: minimal mandatory priority of the channel + * + * If a requested channel is granted, its priority will be at least @prio, + * ie. if PXAD_PRIO_LOW is required, the requested channel will be either + * PXAD_PRIO_LOW, PXAD_PRIO_NORMAL or PXAD_PRIO_HIGHEST. + */ struct pxad_param { unsigned int drcmr; enum pxad_chan_prio prio; -- 2.11.0