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>
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 483e591..fd1657a 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 @@
u16 dsor = 0;
unsigned long regval;
unsigned long timeout;
+ u32 con;
switch (ios->power_mode) {
case MMC_POWER_OFF:
@@ -827,12 +829,18 @@
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 @@
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);