pwm: add informations about polarity, duty cycle and period to debugfs

Commit Message

Heiko Stübner July 3, 2015, 8:43 a.m. UTC

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 <[e-mail]>
---
now values are printed independent of the enable status :-)

 drivers/pwm/core.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 6dafd8e..4360ebb 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -954,6 +954,11 @@  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");
 	}
 }