This allows to get the pin configuration by using debugfs. On my system:
# cat /sys/kernel/debug/pinctrl/pinctrl.3/pinconf-pins
Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com>
---
drivers/pinctrl/pinctrl-at91.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c
index b0b78f3468ae..bcfc8a2eebca 100644
--- a/drivers/pinctrl/pinctrl-at91.c
+++ b/drivers/pinctrl/pinctrl-at91.c
@@ -784,10 +784,35 @@ static int at91_pinconf_set(struct pinctrl_dev *pctldev,
return 0;
}
+#define DBG_SHOW_FLAG(flag) do { \
+ if (config & flag) { \
+ if (num_conf) \
+ seq_puts(s, "|"); \
+ seq_puts(s, #flag); \
+ num_conf++; \
+ } \
+} while (0)
+
static void at91_pinconf_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned pin_id)
{
+ unsigned long config;
+ int ret, val, num_conf = 0;
+
+ ret = at91_pinconf_get(pctldev, pin_id, &config);
+
+ DBG_SHOW_FLAG(MULTI_DRIVE);
+ DBG_SHOW_FLAG(PULL_UP);
+ DBG_SHOW_FLAG(PULL_DOWN);
+ DBG_SHOW_FLAG(DIS_SCHMIT);
+ DBG_SHOW_FLAG(DEGLITCH);
+ DBG_SHOW_FLAG(DEBOUNCE);
+ if (config & DEBOUNCE) {
+ val = config >> DEBOUNCE_VAL_SHIFT;
+ seq_printf(s, "(%d)", val);
+ }
+ return;
}
static void at91_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
--
1.8.3.2
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