From: Frieder Schrempf <frieder.schrempf@exceet.de> To: <robh@kernel.org> Cc: <dmitry.torokhov@gmail.com>, <pawel.moll@arm.com>, <ijc+devicetree@hellion.org.uk>, <galak@codeaurora.org>, <luis@debethencourt.com>, <linux-input@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, "Frieder Schrempf" <frieder.schrempf@exceet.de> Subject: [PATCH v3 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Date: Thu, 19 Jan 2017 16:24:09 +0100 [thread overview] Message-ID: <48a18fbdabcce57ee8efa57b9b6033d1462ab492.1484838551.git.frieder.schrempf@exceet.de> (raw) In-Reply-To: <cover.1484838551.git.frieder.schrempf@exceet.de> This patch adds the documentation for the devicetree bindings to set the volume levels. Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de> --- Changes in v3: - change description of volume-levels to be used for linear levels .../devicetree/bindings/input/pwm-beeper.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt b/Documentation/devicetree/bindings/input/pwm-beeper.txt index be332ae..496b68f 100644 --- a/Documentation/devicetree/bindings/input/pwm-beeper.txt +++ b/Documentation/devicetree/bindings/input/pwm-beeper.txt @@ -5,3 +5,23 @@ Registers a PWM device as beeper. Required properties: - compatible: should be "pwm-beeper" - pwms: phandle to the physical PWM device + +Optional properties: +- volume-levels: Array of PWM duty cycle values that correspond to + linear volume levels. These need to be in the range of 0 to 500, + while 0 means 0% duty cycle (mute) and 500 means 50% duty cycle + (max volume). + Please note that the actual volume of most beepers is highly + non-linear, which means that low volume levels are probably somewhere + in the range of 1 to 30 (0.1-3% duty cycle). +- default-volume-level: the default volume level (index into the + array defined by the "volume-levels" property) + +Example: + + pwm-beeper { + compatible = "pwm-beeper"; + pwms = <&pwm4 0 5000>; + volume-levels = <0 8 20 40 500>; + default-volume-level = <4>; + }; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Frieder Schrempf <frieder.schrempf@exceet.de> To: robh@kernel.org Cc: dmitry.torokhov@gmail.com, pawel.moll@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, luis@debethencourt.com, linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Frieder Schrempf <frieder.schrempf@exceet.de> Subject: [PATCH v3 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Date: Thu, 19 Jan 2017 16:24:09 +0100 [thread overview] Message-ID: <48a18fbdabcce57ee8efa57b9b6033d1462ab492.1484838551.git.frieder.schrempf@exceet.de> (raw) In-Reply-To: <cover.1484838551.git.frieder.schrempf@exceet.de> This patch adds the documentation for the devicetree bindings to set the volume levels. Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de> --- Changes in v3: - change description of volume-levels to be used for linear levels .../devicetree/bindings/input/pwm-beeper.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt b/Documentation/devicetree/bindings/input/pwm-beeper.txt index be332ae..496b68f 100644 --- a/Documentation/devicetree/bindings/input/pwm-beeper.txt +++ b/Documentation/devicetree/bindings/input/pwm-beeper.txt @@ -5,3 +5,23 @@ Registers a PWM device as beeper. Required properties: - compatible: should be "pwm-beeper" - pwms: phandle to the physical PWM device + +Optional properties: +- volume-levels: Array of PWM duty cycle values that correspond to + linear volume levels. These need to be in the range of 0 to 500, + while 0 means 0% duty cycle (mute) and 500 means 50% duty cycle + (max volume). + Please note that the actual volume of most beepers is highly + non-linear, which means that low volume levels are probably somewhere + in the range of 1 to 30 (0.1-3% duty cycle). +- default-volume-level: the default volume level (index into the + array defined by the "volume-levels" property) + +Example: + + pwm-beeper { + compatible = "pwm-beeper"; + pwms = <&pwm4 0 5000>; + volume-levels = <0 8 20 40 500>; + default-volume-level = <4>; + }; -- 2.7.4
next prev parent reply other threads:[~2017-01-19 15:26 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-04-07 15:58 [PATCH 1/1] input: pwm-beeper: add feature to set volume via sysfs Schrempf Frieder 2016-04-07 15:58 ` Schrempf Frieder 2016-04-11 15:21 ` Rob Herring 2016-04-11 15:21 ` Rob Herring 2016-10-07 9:00 ` Schrempf Frieder 2016-10-07 9:00 ` Schrempf Frieder 2016-10-07 9:08 ` [PATCH v2 0/3] input: pwm-beeper: add feature to set volume level Schrempf Frieder 2016-10-07 9:08 ` [PATCH v2 1/3] input: pwm-beeper: add feature to set volume via sysfs Schrempf Frieder 2016-10-07 9:08 ` [PATCH v2 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Schrempf Frieder 2016-10-07 9:08 ` Schrempf Frieder 2016-10-10 15:20 ` Rob Herring 2016-10-10 15:20 ` Rob Herring 2016-10-11 8:17 ` Schrempf Frieder 2016-10-11 8:17 ` Schrempf Frieder 2016-10-11 13:39 ` Rob Herring 2017-01-19 14:40 ` Frieder Schrempf 2017-01-19 15:24 ` [PATCH v3 0/3] input: pwm-beeper: add feature to set volume level Frieder Schrempf 2017-01-19 15:24 ` Frieder Schrempf 2017-01-19 15:24 ` [PATCH v3 1/3] input: pwm-beeper: add feature to set volume via sysfs Frieder Schrempf 2017-01-19 15:24 ` Frieder Schrempf 2017-01-19 21:29 ` Dmitry Torokhov 2017-01-19 21:29 ` Dmitry Torokhov 2017-02-16 20:37 ` Frieder Schrempf 2017-02-16 20:37 ` Frieder Schrempf 2017-01-19 15:24 ` Frieder Schrempf [this message] 2017-01-19 15:24 ` [PATCH v3 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Frieder Schrempf 2017-01-23 14:40 ` Rob Herring 2017-01-23 14:40 ` Rob Herring 2017-01-19 15:24 ` [PATCH v3 3/3] input: pwm-beeper: add devicetree bindings to set volume levels Frieder Schrempf 2017-01-19 15:24 ` Frieder Schrempf 2017-01-19 21:30 ` Dmitry Torokhov 2017-02-16 20:40 ` Frieder Schrempf 2017-02-16 20:40 ` Frieder Schrempf 2017-01-19 21:37 ` [PATCH v3 0/3] input: pwm-beeper: add feature to set volume level Dmitry Torokhov 2017-01-20 19:11 ` David Lechner 2017-02-16 21:15 ` Frieder Schrempf 2017-02-16 21:15 ` Frieder Schrempf 2017-02-16 21:44 ` David Lechner 2017-02-16 21:44 ` David Lechner 2017-02-17 10:01 ` Frieder Schrempf 2017-02-17 10:01 ` Frieder Schrempf 2017-02-16 21:08 ` [PATCH v4 " Frieder Schrempf 2017-02-16 21:08 ` Frieder Schrempf 2017-02-16 21:08 ` [PATCH v4 1/3] input: pwm-beeper: add feature to set volume via sysfs Frieder Schrempf 2017-02-16 21:08 ` Frieder Schrempf 2017-02-16 21:08 ` [PATCH v4 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Frieder Schrempf 2017-02-16 21:08 ` Frieder Schrempf 2017-02-16 21:08 ` [PATCH v4 3/3] input: pwm-beeper: add devicetree bindings to set volume levels Frieder Schrempf 2017-02-16 21:08 ` Frieder Schrempf 2017-02-16 23:07 ` kbuild test robot 2017-02-16 23:07 ` kbuild test robot 2017-02-17 0:14 ` kbuild test robot 2017-02-17 0:14 ` kbuild test robot 2017-02-17 9:54 ` [PATCH v5 0/3] input: pwm-beeper: add feature to set volume level Frieder Schrempf 2017-02-17 9:54 ` Frieder Schrempf 2017-02-17 9:54 ` [PATCH v5 1/3] input: pwm-beeper: add feature to set volume via sysfs Frieder Schrempf 2017-02-17 9:54 ` Frieder Schrempf 2017-02-17 9:54 ` [PATCH v5 2/3] input: pwm-beeper: add documentation for volume devicetree bindings Frieder Schrempf 2017-02-17 9:54 ` Frieder Schrempf 2017-02-17 9:54 ` [PATCH v5 3/3] input: pwm-beeper: add devicetree bindings to set volume levels Frieder Schrempf 2017-02-17 9:54 ` Frieder Schrempf 2016-10-07 9:08 ` [PATCH v2 " Schrempf Frieder
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