mmc: omap_hsmmc: Extend debugfs by SDIO IRQ handling, runtime state

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@gmail.com>
Acked-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 9446010a5dd9..ad3a2acd3664 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -56,6 +56,7 @@
 #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
@@ -1815,13 +1816,23 @@ 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);
 
-        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");
+        }
+        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",