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mmc: refine DDR support

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One flaw with DDR support is that MMC core does not inform the driver
which DDR mode it has selected.  This patch expands the ios->ddr flag
to do that.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Adrian Hunter
2010-10-11 12:43:50 +03:00
committed by Chris Ball
parent 0f8d8ea64e
commit 49e3b5a44f
4 changed files with 11 additions and 8 deletions
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6
drivers/mmc/core/mmc.c
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@ -375,7 +375,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err, ddr = 0;
int err, ddr = MMC_SDR_MODE;
u32 cid[4];
unsigned int max_dtr;
@ -523,10 +523,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (mmc_card_highspeed(card)) {
if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
&& (host->caps & (MMC_CAP_1_8V_DDR)))
ddr = 1;
ddr = MMC_1_8V_DDR_MODE;
else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
&& (host->caps & (MMC_CAP_1_2V_DDR)))
ddr = 1;
ddr = MMC_1_2V_DDR_MODE;
}
/*