Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932306Ab3J2RyY (ORCPT ); Tue, 29 Oct 2013 13:54:24 -0400 Received: from mga02.intel.com ([134.134.136.20]:53415 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758614Ab3J2RyV (ORCPT ); Tue, 29 Oct 2013 13:54:21 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,535,1378882800"; d="scan'208";a="400545351" From: David Cohen To: cjb@laptop.org, adrian.hunter@intel.com, gregkh@linuxfoundation.org Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, chuanxiao.dong@intel.com, David Cohen Subject: [RFC/PATCH 1/2] mmc: sdhci: add quirk for broken HS200 support Date: Tue, 29 Oct 2013 10:58:26 -0700 Message-Id: <1383069507-27574-2-git-send-email-david.a.cohen@linux.intel.com> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1383069507-27574-1-git-send-email-david.a.cohen@linux.intel.com> References: <1383069507-27574-1-git-send-email-david.a.cohen@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1626 Lines: 44 This patch defines a quirk for platforms unable to enable HS200 support. Signed-off-by: David Cohen Reviewed-by: Chuanxiao Dong --- drivers/mmc/host/sdhci.c | 3 ++- include/linux/mmc/sdhci.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 7a7fb4f..ef91ad4 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3002,7 +3002,8 @@ int sdhci_add_host(struct sdhci_host *host) /* SD3.0: SDR104 is supported so (for eMMC) the caps2 * field can be promoted to support HS200. */ - mmc->caps2 |= MMC_CAP2_HS200; + if (!(host->quirks2 & SDHCI_QUIRK2_BROKEN_HS200)) + mmc->caps2 |= MMC_CAP2_HS200; } else if (caps[1] & SDHCI_SUPPORT_SDR50) mmc->caps |= MMC_CAP_UHS_SDR50; diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 3e781b8..362927c4 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -98,6 +98,8 @@ struct sdhci_host { #define SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON (1<<4) /* Controller has a non-standard host control register */ #define SDHCI_QUIRK2_BROKEN_HOST_CONTROL (1<<5) +/* Controller does not support HS200 */ +#define SDHCI_QUIRK2_BROKEN_HS200 (1<<6) int irq; /* Device IRQ */ void __iomem *ioaddr; /* Mapped address */ -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/