From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759150AbZBFSGy (ORCPT ); Fri, 6 Feb 2009 13:06:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752098AbZBFSGo (ORCPT ); Fri, 6 Feb 2009 13:06:44 -0500 Received: from rtsoft3.corbina.net ([85.21.88.6]:3180 "EHLO buildserver.ru.mvista.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753895AbZBFSGo (ORCPT ); Fri, 6 Feb 2009 13:06:44 -0500 Date: Fri, 6 Feb 2009 21:06:42 +0300 From: Anton Vorontsov To: Pierre Ossman Cc: Ben Dooks , Arnd Bergmann , Kumar Gala , Liu Dave , sdhci-devel@list.drzeus.cx, linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org Subject: [PATCH 01/11] sdhci: Add quirk for controllers with no end-of-busy IRQ Message-ID: <20090206180642.GA11548@oksana.dev.rtsoft.ru> References: <20090206180520.GA16123@oksana.dev.rtsoft.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Disposition: inline In-Reply-To: <20090206180520.GA16123@oksana.dev.rtsoft.ru> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ben Dooks The Samsung SDHCI (and FSL eSDHC) controller block seems to fail to generate an INT_DATA_END after the transfer has completed and the bus busy state finished. Changes in e809517f6fa5803a5a1cd56026f0e2190fc13d5c to use the new busy method are the cause of the behaviour change. Signed-off-by: Ben Dooks Signed-off-by: Anton Vorontsov --- drivers/mmc/host/sdhci.c | 5 ++++- drivers/mmc/host/sdhci.h | 2 ++ 2 files changed, 6 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 6b2d1f9..0a1f5c5 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1291,8 +1291,11 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask) if (host->cmd->data) DBG("Cannot wait for busy signal when also " "doing a data transfer"); - else + else if (!(host->quirks & SDHCI_QUIRK_NO_BUSY_IRQ)) return; + + /* The controller does not support the end-of-busy IRQ, + * fall through and take the SDHCI_INT_RESPONSE */ } if (intmask & SDHCI_INT_RESPONSE) diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index 3efba23..2d08dd4 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -210,6 +210,8 @@ struct sdhci_host { #define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13) /* Controller supports high speed but doesn't have the caps bit set */ #define SDHCI_QUIRK_FORCE_HIGHSPEED (1<<14) +/* Controller does not provide transfer-complete interrupt when not busy */ +#define SDHCI_QUIRK_NO_BUSY_IRQ (1<<15) int irq; /* Device IRQ */ void __iomem * ioaddr; /* Mapped address */ -- 1.5.6.5