From: <Claudiu.Beznea@microchip.com>
To: <thierry.reding@gmail.com>, <corbet@lwn.net>,
<Nicolas.Ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
<Ludovic.Desroches@microchip.com>, <robh@kernel.org>
Cc: <linux-pwm@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<Claudiu.Beznea@microchip.com>
Subject: [PATCH v6 4/6] pwm: add push-pull mode support
Date: Mon, 17 Dec 2018 14:03:26 +0000 [thread overview]
Message-ID: <1545055368-23338-5-git-send-email-claudiu.beznea@microchip.com> (raw)
In-Reply-To: <1545055368-23338-1-git-send-email-claudiu.beznea@microchip.com>
From: Claudiu Beznea <claudiu.beznea@microchip.com>
Add push-pull mode support. In push-pull mode the channels' outputs have
same polarities and the edges are complementary delayed for one period.
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/pwm/core.c | 3 +++
include/linux/pwm.h | 3 +++
2 files changed, 6 insertions(+)
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index eb444ee8d486..f182d1eb564e 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -328,6 +328,9 @@ const char *pwm_get_mode_name(unsigned long modebit)
if (modebit == PWM_MODE_BIT(COMPLEMENTARY))
return "complementary";
+ if (modebit == PWM_MODE_BIT(PUSH_PULL))
+ return "push-pull";
+
return "normal";
}
diff --git a/include/linux/pwm.h b/include/linux/pwm.h
index abe189d891af..cce29733d44e 100644
--- a/include/linux/pwm.h
+++ b/include/linux/pwm.h
@@ -32,11 +32,14 @@ enum pwm_polarity {
* PWM modes capabilities
* @PWM_MODE_NORMAL: PWM has one output
* @PWM_MODE_COMPLEMENTARY: PWM has 2 outputs with opposite polarities
+ * @PWM_MODE_PUSH_PULL: PWM has 2 outputs with same polarities and the edges
+ * are complementary delayed for one period
* @PWM_MODE_CNT: PWM modes count
*/
enum pwm_mode {
PWM_MODE_NORMAL,
PWM_MODE_COMPLEMENTARY,
+ PWM_MODE_PUSH_PULL,
PWM_MODE_CNT,
};
--
2.7.4
next prev parent reply other threads:[~2018-12-17 14:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-17 14:03 [PATCH v6 0/9] extend PWM framework to support PWM modes Claudiu.Beznea
2018-12-17 14:03 ` [PATCH v6 1/6] pwm: extend PWM framework with " Claudiu.Beznea
2018-12-17 14:03 ` [PATCH v6 2/6] pwm: add " Claudiu.Beznea
2018-12-17 14:03 ` [PATCH v6 3/6] pwm: atmel: add pwm capabilities Claudiu.Beznea
2018-12-17 14:03 ` Claudiu.Beznea [this message]
2018-12-17 14:03 ` [PATCH v6 5/6] pwm: add documentation for pwm push-pull mode Claudiu.Beznea
2018-12-17 14:03 ` [PATCH v6 6/6] pwm: atmel: add push-pull mode support Claudiu.Beznea
2018-12-17 14:06 ` [PATCH v6 0/9] extend PWM framework to support PWM modes Claudiu.Beznea
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