pinctrl: pinctrl-single: add debugfs pin h/w state info

Adds support for displaying the individual pin h/w config state.

Signed-off-by: Matt Porter <mporter@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c
index aabecfa507b4..726a729a2ec9 100644
--- a/drivers/pinctrl/pinctrl-single.c
+++ b/drivers/pinctrl/pinctrl-single.c
@@ -246,7 +246,15 @@ static void pcs_pin_dbg_show(struct pinctrl_dev *pctldev,
                                         struct seq_file *s,
                                         unsigned offset)
 {
-        seq_printf(s, " " DRIVER_NAME);
+        struct pcs_device *pcs;
+        unsigned val;
+
+        pcs = pinctrl_dev_get_drvdata(pctldev);
+
+        val = pcs->read(pcs->base + offset);
+        val &= pcs->fmask;
+
+        seq_printf(s, "%08x %s " , val, DRIVER_NAME);
 }
 
 static void pcs_dt_free_map(struct pinctrl_dev *pctldev,