currently omap_hsmmc_context_restore depends on CONFIG_PM.
However the caller runtime resume has no such dependency.
This patch intends to fix the same.
omap_hsmmc_context_save is called from probe
unconditionally. However the defined under CONFIG_PM flag.
Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 185 +++++++++++++++++++---------------------
1 files changed, 88 insertions(+), 97 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index e6f9aea..e99487a 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -673,91 +673,6 @@ static void omap_hsmmc_set_bus_mode(struct omap_hsmmc_host *host)
}
#ifdef CONFIG_PM
-
-/*
- * Restore the MMC host context, if it was lost as result of a
- * power state change.
- */
-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;
- unsigned long timeout;
-
- if (pdata->get_context_loss_count) {
- context_loss = pdata->get_context_loss_count(host->dev);
- if (context_loss < 0)
- return 1;
- }
-
- dev_dbg(mmc_dev(host->mmc), "context was %slost\n",
- context_loss == host->context_loss ? "not " : "");
- if (host->context_loss == context_loss)
- return 1;
-
- /* Wait for hardware reset */
- timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
- while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE
- && time_before(jiffies, timeout))
- ;
-
- /* Do software reset */
- OMAP_HSMMC_WRITE(host->base, SYSCONFIG, SOFTRESET);
- timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
- while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE
- && time_before(jiffies, timeout))
- ;
-
- OMAP_HSMMC_WRITE(host->base, SYSCONFIG,
- OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE);
-
- if (host->id == OMAP_MMC1_DEVID) {
- if (host->power_mode != MMC_POWER_OFF &&
- (1 << ios->vdd) <= MMC_VDD_23_24)
- hctl = SDVS18;
- else
- hctl = SDVS30;
- capa = VS30 | VS18;
- } else {
- hctl = SDVS18;
- capa = VS18;
- }
-
- OMAP_HSMMC_WRITE(host->base, HCTL,
- OMAP_HSMMC_READ(host->base, HCTL) | hctl);
-
- OMAP_HSMMC_WRITE(host->base, CAPA,
- OMAP_HSMMC_READ(host->base, CAPA) | capa);
-
- 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))
- ;
-
- omap_hsmmc_disable_irq(host);
-
- /* Do not initialize card-specific things if the power is off */
- if (host->power_mode == MMC_POWER_OFF)
- goto out;
-
- omap_hsmmc_set_bus_width(host);
-
- omap_hsmmc_set_clock(host);
-
- omap_hsmmc_set_bus_mode(host);
-
-out:
- host->context_loss = context_loss;
-
- dev_dbg(mmc_dev(host->mmc), "context is restored\n");
- return 0;
-}
-
/*
* Save the MMC host context (store the number of power state changes so far).
*/
@@ -773,18 +688,6 @@ static void omap_hsmmc_context_save(struct omap_hsmmc_host *host)
host->context_loss = context_loss;
}
}
-
-#else
-
-static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
-{
- return 0;
-}
-
-static void omap_hsmmc_context_save(struct omap_hsmmc_host *host)
-{
-}
-
#endif
/*
@@ -1942,7 +1845,9 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
goto err1;
}
+#ifdef CONFIG_PM
omap_hsmmc_context_save(host);
+#endif
mmc->caps |= MMC_CAP_DISABLE;
if (host->pdata->controller_flags & OMAP_HSMMC_BROKEN_MULTIBLOCK_READ) {
@@ -2249,6 +2154,91 @@ static int omap_hsmmc_resume(struct device *dev)
}
#endif
+#ifdef CONFIG_PM_RUNTIME
+/*
+ * Restore the MMC host context, if it was lost as result of a
+ * power state change.
+ */
+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;
+ unsigned long timeout;
+
+ if (pdata->get_context_loss_count) {
+ context_loss = pdata->get_context_loss_count(host->dev);
+ if (context_loss < 0)
+ return 1;
+ }
+
+ dev_dbg(mmc_dev(host->mmc), "context was %slost\n",
+ context_loss == host->context_loss ? "not " : "");
+ if (host->context_loss == context_loss)
+ return 1;
+
+ /* Wait for hardware reset */
+ timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
+ while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE
+ && time_before(jiffies, timeout))
+ ;
+
+ /* Do software reset */
+ OMAP_HSMMC_WRITE(host->base, SYSCONFIG, SOFTRESET);
+ timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
+ while ((OMAP_HSMMC_READ(host->base, SYSSTATUS) & RESETDONE) != RESETDONE
+ && time_before(jiffies, timeout))
+ ;
+
+ OMAP_HSMMC_WRITE(host->base, SYSCONFIG,
+ OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE);
+
+ if (host->id == OMAP_MMC1_DEVID) {
+ if (host->power_mode != MMC_POWER_OFF &&
+ (1 << ios->vdd) <= MMC_VDD_23_24)
+ hctl = SDVS18;
+ else
+ hctl = SDVS30;
+ capa = VS30 | VS18;
+ } else {
+ hctl = SDVS18;
+ capa = VS18;
+ }
+
+ OMAP_HSMMC_WRITE(host->base, HCTL,
+ OMAP_HSMMC_READ(host->base, HCTL) | hctl);
+
+ OMAP_HSMMC_WRITE(host->base, CAPA,
+ OMAP_HSMMC_READ(host->base, CAPA) | capa);
+
+ 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))
+ ;
+
+ omap_hsmmc_disable_irq(host);
+
+ /* Do not initialize card-specific things if the power is off */
+ if (host->power_mode == MMC_POWER_OFF)
+ goto out;
+
+ omap_hsmmc_set_bus_width(host);
+
+ omap_hsmmc_set_clock(host);
+
+ omap_hsmmc_set_bus_mode(host);
+
+out:
+ host->context_loss = context_loss;
+
+ dev_dbg(mmc_dev(host->mmc), "context is restored\n");
+ return 0;
+}
+
static int omap_hsmmc_runtime_suspend(struct device *dev)
{
struct omap_hsmmc_host *host;
@@ -2270,6 +2260,7 @@ static int omap_hsmmc_runtime_resume(struct device *dev)
return 0;
}
+#endif
static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(omap_hsmmc_suspend, omap_hsmmc_resume)
--
1.7.1
--
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