>From 7961505a57b8a9dff7b6fc8bbee654165a1b05b2 Mon Sep 17 00:00:00 2001 From: Jarkko Lavinen <[email protected]> Date: Fri, 21 Nov 2008 16:49:54 +0200 Subject: [PATCH] OMAP: HSMMC: Add 8-bit bus width mode support
Signed-off-by: Jarkko Lavinen <[email protected]> --- 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 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 @@ 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); -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
