Commit 4d9b8a8e authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Linus Walleij

pinctrl: at91: implement at91_pinconf_dbg_show

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: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 1a16bee6
...@@ -784,10 +784,35 @@ static int at91_pinconf_set(struct pinctrl_dev *pctldev, ...@@ -784,10 +784,35 @@ static int at91_pinconf_set(struct pinctrl_dev *pctldev,
return 0; 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, static void at91_pinconf_dbg_show(struct pinctrl_dev *pctldev,
struct seq_file *s, unsigned pin_id) 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, static void at91_pinconf_group_dbg_show(struct pinctrl_dev *pctldev,
......
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