Re: [PATCH v11 4/7] mmc: omap_hsmmc: Extend debugfs by SDIO IRQ handling, runtime state

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On Friday 09 May 2014 04:50 AM, Andreas Fenkart wrote:
Add SDIO IRQ entries to debugfs entry. Note that PSTATE shows current
state of data lines, incl. SDIO IRQ pending

Signed-off-by: Andreas Fenkart <afenkart@xxxxxxxxx>


Looks good to me
Acked-by: Balaji T K <balajitk@xxxxxx>

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f76462d..14857d7 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -83,6 +83,7 @@ static void apply_clk_hack(struct device *dev)
  #define OMAP_HSMMC_RSP54	0x0118
  #define OMAP_HSMMC_RSP76	0x011C
  #define OMAP_HSMMC_DATA		0x0120
+#define OMAP_HSMMC_PSTATE	0x0124
  #define OMAP_HSMMC_HCTL		0x0128
  #define OMAP_HSMMC_SYSCTL	0x012C
  #define OMAP_HSMMC_STAT		0x0130
@@ -1854,14 +1855,29 @@ 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);
+	bool suspended;

-	seq_printf(s, "mmc%d:\n ctx_loss:\t%d\n\nregs:\n",
-			mmc->index, host->context_loss);
+	seq_printf(s, "mmc%d:\n", mmc->index);
+	seq_printf(s, "sdio irq mode\t%s\n",
+		   (mmc->caps & MMC_CAP_SDIO_IRQ) ? "interrupt" : "polling");

-	pm_runtime_get_sync(host->dev);
+	if (mmc->caps & MMC_CAP_SDIO_IRQ) {
+		seq_printf(s, "sdio irq \t%s\n",
+			   (host->flags & HSMMC_SDIO_IRQ_ENABLED) ?  "enabled"
+			   : "disabled");
+	}
+
+	suspended = host->dev->power.runtime_status != RPM_ACTIVE;
+	seq_printf(s, "runtime state\t%s\n", (suspended ?  "idle" : "active"));

+	seq_printf(s, "ctx_loss:\t%d\n", host->context_loss);
+
+	pm_runtime_get_sync(host->dev);
+	seq_puts(s, "\nregs:\n");
  	seq_printf(s, "CON:\t\t0x%08x\n",
  			OMAP_HSMMC_READ(host->base, CON));
+	seq_printf(s, "PSTATE:\t\t0x%08x\n",
+		   OMAP_HSMMC_READ(host->base, PSTATE));
  	seq_printf(s, "HCTL:\t\t0x%08x\n",
  			OMAP_HSMMC_READ(host->base, HCTL));
  	seq_printf(s, "SYSCTL:\t\t0x%08x\n",


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