linux-kernel - [PATCH v3 08/12] pwm: add information about polarity, duty cycle and period to debugfs

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Message-Id: <1442828009-6241-9-git-send-email-boris.brezillon@free-electrons.com>
Date:	Mon, 21 Sep 2015 11:33:25 +0200
From:	Boris Brezillon <boris.brezillon@...e-electrons.com>
To:	Thierry Reding <thierry.reding@...il.com>,
	linux-pwm@...r.kernel.org, Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Lee Jones <lee.jones@...aro.org>, linux-fbdev@...r.kernel.org,
	Bryan Wu <cooloney@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Jacek Anaszewski <j.anaszewski@...sung.com>,
	linux-leds@...r.kernel.org,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	linux-sunxi@...glegroups.com, Heiko Stuebner <heiko@...ech.de>,
	linux-rockchip@...ts.infradead.org,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Tomi Valkeinen <tomi.valkeinen@...com>,
	Daniel Mack <daniel@...que.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Robert Jarzmik <robert.jarzmik@...e.fr>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Doug Anderson <dianders@...gle.com>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: [PATCH v3 08/12] pwm: add information about polarity, duty cycle and period to debugfs

From: Heiko Stübner <heiko@...ech.de>

The pwm-states make it possible to also output the polarity, duty cycle
and period information in the debugfs pwm summary-outout.
This makes it easier to gather overview information about pwms without
needing to walk through the sysfs attributes of every pwm.

Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
---
 drivers/pwm/core.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index ff3c662..7eba2f3 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -1018,6 +1018,11 @@ static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)
 		if (pwm_is_enabled(pwm))
 			seq_puts(s, " enabled");
 
+		seq_printf(s, " period:%uns", pwm_get_period(pwm));
+		seq_printf(s, " duty:%uns", pwm_get_duty_cycle(pwm));
+		seq_printf(s, " polarity:%s", pwm_get_polarity(pwm) ? "inverse"
+								    : "normal");
+
 		seq_puts(s, "\n");
 	}
 }
-- 
1.9.1

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