linux-kernel - [PATCH 1/2] pwm: add period and polarity to struct pwm

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Message-Id: <1397066649-3767-2-git-send-email-alexandre.belloni@free-electrons.com>
Date:	Wed,  9 Apr 2014 20:04:08 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Tony Lindgren <tony@...mide.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Paul Parsons <lost.distance@...oo.com>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>, linux-pwm@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org, linux-sh@...r.kernel.org,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
Subject: [PATCH 1/2] pwm: add period and polarity to struct pwm_lookup

Adds a period and a polarity member to struct pwm_lookup so that when performing
a lookup using the lookup table instead of device tree, we are able to set the
period and the polarity accordingly like what is done in
of_pwm_xlate_with_flags.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
---
 drivers/pwm/core.c  | 5 +++++
 include/linux/pwm.h | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index a80471399c20..206e5996359c 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -663,6 +663,11 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
 
 	if (chip)
 		pwm = pwm_request_from_chip(chip, index, con_id ?: dev_id);
+	if (IS_ERR(pwm))
+		return pwm;
+
+	pwm_set_period(pwm, p->period);
+	pwm_set_polarity(pwm, p->polarity);
 
 	mutex_unlock(&pwm_lookup_lock);
 
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index 4717f54051cb..2f45e2fe5b93 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -274,6 +274,8 @@ struct pwm_lookup {
 	unsigned int index;
 	const char *dev_id;
 	const char *con_id;
+	unsigned int period;
+	enum pwm_polarity polarity;
 };
 
 #define PWM_LOOKUP(_provider, _index, _dev_id, _con_id)	\
-- 
1.8.3.2

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