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

drivers/pinctrl/pinctrl-at91.c

+25 −0
Original line number Original line Diff line number Diff line
@@ -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,