Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932981Ab1CRWMx (ORCPT ); Fri, 18 Mar 2011 18:12:53 -0400 Received: from mail.atheros.com ([12.19.149.2]:44359 "EHLO mail.atheros.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932935Ab1CRWMS (ORCPT ); Fri, 18 Mar 2011 18:12:18 -0400 From: "Luis R. Rodriguez" To: CC: , , , , , , "Luis R. Rodriguez" , Naveen Singh , Vipin Mehta Subject: [RFC 3/4] sdhci: cache when the MMC bus width is 4 bits wide Date: Fri, 18 Mar 2011 15:11:59 -0700 Message-ID: <1300486320-23607-4-git-send-email-lrodriguez@atheros.com> X-Mailer: git-send-email 1.7.4.15.g7811d In-Reply-To: <1300486320-23607-1-git-send-email-lrodriguez@atheros.com> References: <1300486320-23607-1-git-send-email-lrodriguez@atheros.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1808 Lines: 52 This can later be used when we send commands. Cc: Chris Ball Cc: Kalle Valo Cc: Naveen Singh Cc: Vipin Mehta Signed-off-by: Luis R. Rodriguez --- drivers/mmc/host/sdhci.c | 7 +++++-- include/linux/mmc/sdhci.h | 1 + 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 7074870..a4cf0c0 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -1206,10 +1206,13 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) } else { if (host->version >= SDHCI_SPEC_300) ctrl &= ~SDHCI_CTRL_8BITBUS; - if (ios->bus_width == MMC_BUS_WIDTH_4) + if (ios->bus_width == MMC_BUS_WIDTH_4) { ctrl |= SDHCI_CTRL_4BITBUS; - else + host->flags |= SDHCI_IN_4BIT_MODE; + } else { ctrl &= ~SDHCI_CTRL_4BITBUS; + host->flags &= ~SDHCI_IN_4BIT_MODE; + } } sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL); } diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 83bd9f7..266f796 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -109,6 +109,7 @@ struct sdhci_host { #define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */ #define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */ #define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */ +#define SDHCI_IN_4BIT_MODE (1<<4) /* bus is in 4-bit mode */ unsigned int version; /* SDHCI spec. version */ -- 1.7.4.15.g7811d -- 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/