OMAP: PM: replace omap_pm_get_dev_context_loss_count with omap_pm_was_context_lost

Drivers just need to know if thier context was lost
or not. There is not much point in maintaining a count

This removes omap_pm_get_dev_context_loss_count and
replaces it with omap_pm_was_context_lost

Adapt drivers to use the omap_pm_was_context_lost API,
which returns a bool value instead of relying on the
incrementing context lost counter. This makes
drivers a little more snappier as they do not need to
restore contexts when not needed.

WARNING: this changes the api set available to drivers
to use from OMAP PM layer.

Change-Id: I7fd9183d3e12982bb40651df9378637073121399
Signed-off-by: Axel Haslam <axelhaslam@ti.com>

1 files changed, 5 insertions, 30 deletions

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 2ca145b..18fc306 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -41,6 +41,7 @@
 #include <plat/board.h>
 #include <plat/mmc.h>
 #include <plat/cpu.h>
+#include <plat/omap-pm.h>
 
 /* OMAP HSMMC Host Controller Registers */
 #define OMAP_HSMMC_SYSCONFIG	0x0010
@@ -181,7 +182,6 @@ struct omap_hsmmc_host {
 	int			slot_id;
 	int			got_dbclk;
 	int			response_busy;
-	int			context_loss;
 	int			dpm_state;
 	int			vdd;
 	int			protect_card;
@@ -597,21 +597,11 @@ static void omap_hsmmc_disable_irq(struct omap_hsmmc_host *host)
 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;
 	u16 dsor = 0;
 	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)
+	if (!omap_pm_was_context_lost(host->dev))
 		return 1;
 
 	/* Wait for hardware reset */
@@ -711,8 +701,6 @@ static int omap_hsmmc_context_restore(struct omap_hsmmc_host *host)
 	else
 		OMAP_HSMMC_WRITE(host->base, CON, con & ~OD);
 out:
-	host->context_loss = context_loss;
-
 	dev_dbg(mmc_dev(host->mmc), "context is restored\n");
 	return 0;
 }
@@ -722,15 +710,7 @@ out:
  */
 static void omap_hsmmc_context_save(struct omap_hsmmc_host *host)
 {
-	struct omap_mmc_platform_data *pdata = host->pdata;
-	int context_loss;
-
-	if (pdata->get_context_loss_count) {
-		context_loss = pdata->get_context_loss_count(host->dev);
-		if (context_loss < 0)
-			return;
-		host->context_loss = context_loss;
-	}
+	return;
 }
 
 #else
@@ -1946,20 +1926,15 @@ static int omap_hsmmc_regs_show(struct seq_file *s, void *data)
 {
 	struct mmc_host *mmc = s->private;
 	struct omap_hsmmc_host *host = mmc_priv(mmc);
-	int context_loss = 0;
 
-	if (host->pdata->get_context_loss_count)
-		context_loss = host->pdata->get_context_loss_count(host->dev);
 
 	seq_printf(s, "mmc%d:\n"
 			" enabled:\t%d\n"
 			" dpm_state:\t%d\n"
 			" nesting_cnt:\t%d\n"
-			" ctx_loss:\t%d:%d\n"
-			"\nregs:\n",
+			" ct",
 			mmc->index, mmc->enabled ? 1 : 0,
-			host->dpm_state, mmc->nesting_cnt,
-			host->context_loss, context_loss);
+			host->dpm_state, mmc->nesting_cnt);
 
 	if (host->suspended || host->dpm_state == OFF) {
 		seq_printf(s, "host suspended, can't read registers\n");