On Fri, 10 Jul 2009 15:42:27 +0300
Adrian Hunter <adrian.hunter@xxxxxxxxx> 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?