diff options
| author | Jarkko Lavinen <jarkko.lavinen@nokia.com> | 2008-11-21 15:49:54 +0100 |
|---|---|---|
| committer | Pierre Ossman <drzeus@drzeus.cx> | 2009-03-24 21:30:05 +0100 |
| commit | 731530104afa6310660455ad86353dbe9e226740 (patch) | |
| tree | f259eb3e73c63d4f5793b9d98b8a160f46055a91 /drivers/mmc | |
| parent | omap_hsmmc: Implement scatter-gather emulation (diff) | |
| download | linux-731530104afa6310660455ad86353dbe9e226740.tar.xz linux-731530104afa6310660455ad86353dbe9e226740.zip | |
omap_hsmmc: Add 8-bit bus width mode support
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 483e591f7bbb..fd1657ad2a74 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -77,6 +77,7 @@ #define MSBS (1 << 5) #define BCE (1 << 1) #define FOUR_BIT (1 << 1) +#define DW8 (1 << 5) #define CC 0x1 #define TC 0x02 #define OD 0x1 @@ -817,6 +818,7 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) u16 dsor = 0; unsigned long regval; unsigned long timeout; + u32 con; switch (ios->power_mode) { case MMC_POWER_OFF: @@ -827,12 +829,18 @@ static void omap_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) break; } + con = OMAP_HSMMC_READ(host->base, CON); switch (mmc->ios.bus_width) { + case MMC_BUS_WIDTH_8: + OMAP_HSMMC_WRITE(host->base, CON, con | DW8); + break; case MMC_BUS_WIDTH_4: + OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8); OMAP_HSMMC_WRITE(host->base, HCTL, OMAP_HSMMC_READ(host->base, HCTL) | FOUR_BIT); break; case MMC_BUS_WIDTH_1: + OMAP_HSMMC_WRITE(host->base, CON, con & ~DW8); OMAP_HSMMC_WRITE(host->base, HCTL, OMAP_HSMMC_READ(host->base, HCTL) & ~FOUR_BIT); break; @@ -1057,7 +1065,9 @@ static int __init omap_mmc_probe(struct platform_device *pdev) mmc->ocr_avail = mmc_slot(host).ocr_mask; mmc->caps |= MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED; - if (pdata->slots[host->slot_id].wires >= 4) + if (pdata->slots[host->slot_id].wires >= 8) + mmc->caps |= MMC_CAP_8_BIT_DATA; + else if (pdata->slots[host->slot_id].wires >= 4) mmc->caps |= MMC_CAP_4_BIT_DATA; omap_hsmmc_init(host); |