diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 85 |
1 files changed, 41 insertions, 44 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index bda284ba1303..f82a0535afd1 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -638,6 +638,41 @@ static void omap_hsmmc_set_clock(struct omap_hsmmc_host *host) omap_hsmmc_start_clock(host); } +static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host *host) +{ + struct mmc_ios *ios = &host->mmc->ios; + u32 con; + + con = OMAP_HSMMC_READ(host->base, CON); + switch (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; + } +} + +static void omap_hsmmc_set_bus_mode(struct omap_hsmmc_host *host) +{ + struct mmc_ios *ios = &host->mmc->ios; + u32 con; + + con = OMAP_HSMMC_READ(host->base, CON); + if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) + OMAP_HSMMC_WRITE(host->base, CON, con | OD); + else + OMAP_HSMMC_WRITE(host->base, CON, con & ~OD); +} + #ifdef CONFIG_PM /* @@ -649,7 +684,7 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) struct mmc_ios *ios = &host->mmc->ios; struct omap_mmc_platform_data *pdata = host->pdata; int context_loss = 0; - u32 hctl, capa, con; + u32 hctl, capa; unsigned long timeout; if (pdata->get_context_loss_count) { @@ -711,30 +746,12 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host) if (host->power_mode == MMC_POWER_OFF) goto out; - con = OMAP_HSMMC_READ(host->base, CON); - switch (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; - } + omap_hsmmc_set_bus_width(host); omap_hsmmc_set_clock(host); - con = OMAP_HSMMC_READ(host->base, CON); - if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) - OMAP_HSMMC_WRITE(host->base, CON, con | OD); - else - OMAP_HSMMC_WRITE(host->base, CON, con & ~OD); + omap_hsmmc_set_bus_mode(host); + out: host->context_loss = context_loss; @@ -1628,7 +1645,6 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req) static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) { struct omap_hsmmc_host *host = mmc_priv(mmc); - u32 con; int do_send_init_stream = 0; pm_runtime_get_sync(host->dev); @@ -1654,22 +1670,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) /* FIXME: set registers based only on changes to ios */ - 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; - } + omap_hsmmc_set_bus_width(host); if (host->pdata->controller_flags & OMAP_HSMMC_SUPPORTS_DUAL_VOLT) { /* Only MMC1 can interface at 3V without some flavor @@ -1694,11 +1695,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) if (do_send_init_stream) send_init_stream(host); - con = OMAP_HSMMC_READ(host->base, CON); - if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) - OMAP_HSMMC_WRITE(host->base, CON, con | OD); - else - OMAP_HSMMC_WRITE(host->base, CON, con & ~OD); + omap_hsmmc_set_bus_mode(host); pm_runtime_put_autosuspend(host->dev); } |