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au1xmmc: enable 4 bit transfer mode 

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Manuel Lauss 2008-06-09 08:37:33 +02:00 committed by Pierre Ossman
parent c4223c2c91
commit 281dd23ea0
1 changed files with 17 additions and 5 deletions
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22
drivers/mmc/host/au1xmmc.c
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@ -95,14 +95,13 @@ static inline void IRQ_OFF(struct au1xmmc_host *host, u32 mask)
static inline void SEND_STOP(struct au1xmmc_host *host)
{
/* We know the value of CONFIG2, so avoid a read we don't need */
u32 mask = SD_CONFIG2_EN;
u32 config2;
WARN_ON(host->status != HOST_S_DATA);
host->status = HOST_S_STOP;
au_writel(mask | SD_CONFIG2_DF, HOST_CONFIG2(host));
config2 = au_readl(HOST_CONFIG2(host));
au_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host));
au_sync();
/* Send the stop commmand */
@ -697,6 +696,7 @@ static void au1xmmc_reset_controller(struct au1xmmc_host *host)
static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
{
struct au1xmmc_host *host = mmc_priv(mmc);
u32 config2;
if (ios->power_mode == MMC_POWER_OFF)
au1xmmc_set_power(host, 0);
@ -708,6 +708,18 @@ static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
au1xmmc_set_clock(host, ios->clock);
host->clock = ios->clock;
}
config2 = au_readl(HOST_CONFIG2(host));
switch (ios->bus_width) {
case MMC_BUS_WIDTH_4:
config2 |= SD_CONFIG2_WB;
break;
case MMC_BUS_WIDTH_1:
config2 &= ~SD_CONFIG2_WB;
break;
}
au_writel(config2, HOST_CONFIG2(host));
au_sync();
}
#define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT)
@ -952,7 +964,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
mmc->max_blk_count = 512;
mmc->ocr_avail = AU1XMMC_OCR;
mmc->caps = 0;
mmc->caps = MMC_CAP_4_BIT_DATA;
host->status = HOST_S_IDLE;