[PATCH RFC] mmc : omap_hsmmc : Save and restore the sysc across reset
From: Shubhrajyoti D
Date: Mon Jan 16 2012 - 06:33:20 EST
The commit 11dd62:[omap_hsmmc: context save/restore support]
does a reset and restores AUTOIDLE settings.
This patch saves the register does a reset and restores
the same configuration.
Cc: Denis Karpov <ext-denis.2.karpov@xxxxxxxxx>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx>
---
Untested
drivers/mmc/host/omap_hsmmc.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index fd0c661..175029d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -680,7 +680,7 @@ 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;
+ u32 hctl, capa, sysc;
unsigned long timeout;
if (pdata->get_context_loss_count) {
@@ -700,6 +700,7 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
&& time_before(jiffies, timeout))
;
+ sysc = OMAP_HSMMC_READ(host->base, SYSCONFIG);
/* Do software reset */
OMAP_HSMMC_WRITE(host->base, SYSCONFIG, SOFTRESET);
timeout = jiffies + msecs_to_jiffies(MMC_TIMEOUT_MS);
@@ -707,8 +708,7 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
&& time_before(jiffies, timeout))
;
- OMAP_HSMMC_WRITE(host->base, SYSCONFIG,
- OMAP_HSMMC_READ(host->base, SYSCONFIG) | AUTOIDLE);
+ OMAP_HSMMC_WRITE(host->base, SYSCONFIG, sysc);
if (host->id == OMAP_MMC1_DEVID) {
if (host->power_mode != MMC_POWER_OFF &&
--
1.7.1
--
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