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    SubjectRe: [PATCH 20/32] omap_hsmmc: put MMC regulator to sleep
    On Fri, 10 Jul 2009 15:42:27 +0300
    Adrian Hunter <adrian.hunter@nokia.com> wrote:

    > +static int omap_mmc_regsleep_to_enabled(struct mmc_omap_host *host)
    > +{
    > + unsigned long timeout;
    > +
    > + dev_dbg(mmc_dev(host->mmc), "REGSLEEP -> ENABLED\n");
    > +
    > + clk_enable(host->fclk);
    > + clk_enable(host->iclk);
    > +
    > + if (clk_enable(host->dbclk))
    > + dev_dbg(mmc_dev(host->mmc),
    > + "Enabling debounce clk failed\n");
    > +
    > + omap_mmc_restore_ctx(host);
    > +
    > + /*
    > + * We turned off interrupts and bus power. Interrupts
    > + * are turned on by 'mmc_omap_start_command()' so we
    > + * just need to turn on the bus power here.
    > + */
    > + OMAP_HSMMC_WRITE(host->base, HCTL,
    > + OMAP_HSMMC_READ(host->base, HCTL) | SDBP);
    > +
    > + timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
    > + while ((OMAP_HSMMC_READ(host->base, HCTL) & SDBP) != SDBP &&
    > + time_before(jiffies, timeout))
    > + ;
    > +
    > + if (mmc_slot(host).set_sleep)
    > + mmc_slot(host).set_sleep(host->dev, host->slot_id,
    > + 0, host->vdd, 0);
    > +
    > + host->dpm_state = ENABLED;
    > +
    > + return 0;
    > +}

    We take no action if the wait for SDBP timed out?


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