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From: Seungwon Jeon <tgih.jun@samsung.com>
To: linux-mmc@vger.kernel.org, cjb@laptop.org
Cc: linux-kernel@vger.kernel.org, Seungwon Jeon <tgih.jun@samsung.com>
Subject: [PATCH] mmc: dw_mmc: Fix DDR mode support.
Date: Fri,  5 Aug 2011 12:35:03 +0900	[thread overview]
Message-ID: <1312515303-17169-1-git-send-email-tgih.jun@samsung.com> (raw)

Host driver can't get a hint of DDR mode through ios->ddr flag anymore.
ios->timing is currently used to inform DDR mode as a substitute.
And capability of MMC_CAP_MMC_HIGHSPEED is added for DDR support.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
---
 drivers/mmc/host/dw_mmc.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index d65511e..b412a1d 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -699,7 +699,7 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 	}
 
 	/* DDR mode set */
-	if (ios->ddr) {
+	if (ios->timing == MMC_TIMING_UHS_DDR50) {
 		regs = mci_readl(slot->host, UHS_REG);
 		regs |= (0x1 << slot->id) << 16;
 		mci_writel(slot->host, UHS_REG, regs);
@@ -1646,7 +1646,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 			mmc->caps |= MMC_CAP_4_BIT_DATA;
 
 	if (host->pdata->quirks & DW_MCI_QUIRK_HIGHSPEED)
-		mmc->caps |= MMC_CAP_SD_HIGHSPEED;
+		mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
 
 #ifdef CONFIG_MMC_DW_IDMAC
 	mmc->max_segs = host->ring_size;
-- 
1.7.0.4


             reply	other threads:[~2011-08-05  3:47 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-08-05  3:35 Seungwon Jeon [this message]
2011-08-05 10:20 ` Will Newton
2011-08-05 21:35   ` Jae hoon Chung
2011-08-08  1:38     ` Seungwon Jeon
2011-08-11 21:38 ` Chris Ball

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