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UPSTREAM: pwm: Add information about polarity, duty cycle and period to debugfs

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The PWM states make it possible to also output the polarity, duty cycle
and period information in the debugfs summary output. This simplifies
gathering information about PWMs without needing to walk through the
sysfs attributes of every PWM.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
[thierry.reding@gmail.com: use more spaces in debugfs output]
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

(cherry picked from commit 23e3523f5d)

Change-Id: Ia5d4d9ab898510d07364ad455ccf93e1c1d95d2b
Signed-off-by: David Wu <david.wu@rock-chips.com>
This commit is contained in:
Heiko Stübner
2016-04-14 21:17:44 +02:00
committed by Huang, Tao
parent a5721888cd
commit 0cb6a1b23b
1 changed files with 5 additions and 0 deletions
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5
drivers/pwm/core.c
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@@ -963,6 +963,11 @@ static void pwm_dbg_show(struct pwm_chip *chip, struct seq_file *s)
if (state.enabled)
seq_puts(s, " enabled");
seq_printf(s, " period: %u ns", state.period);
seq_printf(s, " duty: %u ns", state.duty_cycle);
seq_printf(s, " polarity: %s",
state.polarity ? "inverse" : "normal");
seq_puts(s, "\n");
}
}