From: "Michal Vokáč" <michal.vokac@ysoft.com>
To: Fabrice Gasnier <fabrice.gasnier@st.com>,
thierry.reding@gmail.com, gottfried.haider@gmail.com
Cc: stefan.wahren@i2se.com, hsweeten@visionengravers.com,
loic.pallardy@st.com, broonie@kernel.org, gohai@sukzessiv.net,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-rpi-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org
Subject: Re: [PATCH v2 2/2] pwm: send a uevent on the pwmchip device upon channel sysfs (un)export
Date: Mon, 1 Oct 2018 18:29:25 +0200 [thread overview]
Message-ID: <b43c5dd5-6ffd-5e5a-f4d0-86792feac304@ysoft.com> (raw)
In-Reply-To: <1538400237-28766-3-git-send-email-fabrice.gasnier@st.com>
On 1.10.2018 15:23, Fabrice Gasnier wrote:
> This patch sends a uevent (KOBJ_CHANGE) on the pwmchipN device, everytime
> a pwmX channel has been exported/unexported via sysfs.
> This allows udev to implement rules on such events, like:
>
> SUBSYSTEM=="pwm*", PROGRAM="/bin/sh -c '\
> chown -R root:gpio /sys/class/pwm && chmod -R 770 /sys/class/pwm;\
> chown -R root:gpio
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip* && chmod -R 770
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip*\
> '"
>
> This is a replacement patch for commit 7e5d1fd75c3d ("pwm: Set class for
> exported channels in sysfs"), see [1].
>
> basic testing:
> $ udevadm monitor --environment &
> $ echo 0 > /sys/class/pwm/pwmchip0/export
> KERNEL[197.321736] change /devices/.../pwm/pwmchip0 (pwm)
> ACTION=change
> DEVPATH=/devices/.../pwm/pwmchip0
> EXPORT=pwm0
> SEQNUM=2045
> SUBSYSTEM=pwm
>
> [1] https://lkml.org/lkml/2018/9/25/713
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
> Tested-by: Gottfried Haider <gottfried.haider@gmail.com>
Tested-by: Michal Vokáč <michal.vokac@ysoft.com>
WARNING: multiple messages have this Message-ID (diff)
From: "Michal Vokáč" <michal.vokac@ysoft.com>
To: Fabrice Gasnier <fabrice.gasnier@st.com>,
thierry.reding@gmail.com, gottfried.haider@gmail.com
Cc: stefan.wahren@i2se.com, linux-pwm@vger.kernel.org,
loic.pallardy@st.com, linux-kernel@vger.kernel.org,
hsweeten@visionengravers.com, broonie@kernel.org,
linux-rpi-kernel@lists.infradead.org, gohai@sukzessiv.net,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/2] pwm: send a uevent on the pwmchip device upon channel sysfs (un)export
Date: Mon, 1 Oct 2018 18:29:25 +0200 [thread overview]
Message-ID: <b43c5dd5-6ffd-5e5a-f4d0-86792feac304@ysoft.com> (raw)
In-Reply-To: <1538400237-28766-3-git-send-email-fabrice.gasnier@st.com>
On 1.10.2018 15:23, Fabrice Gasnier wrote:
> This patch sends a uevent (KOBJ_CHANGE) on the pwmchipN device, everytime
> a pwmX channel has been exported/unexported via sysfs.
> This allows udev to implement rules on such events, like:
>
> SUBSYSTEM=="pwm*", PROGRAM="/bin/sh -c '\
> chown -R root:gpio /sys/class/pwm && chmod -R 770 /sys/class/pwm;\
> chown -R root:gpio
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip* && chmod -R 770
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip*\
> '"
>
> This is a replacement patch for commit 7e5d1fd75c3d ("pwm: Set class for
> exported channels in sysfs"), see [1].
>
> basic testing:
> $ udevadm monitor --environment &
> $ echo 0 > /sys/class/pwm/pwmchip0/export
> KERNEL[197.321736] change /devices/.../pwm/pwmchip0 (pwm)
> ACTION=change
> DEVPATH=/devices/.../pwm/pwmchip0
> EXPORT=pwm0
> SEQNUM=2045
> SUBSYSTEM=pwm
>
> [1] https://lkml.org/lkml/2018/9/25/713
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
> Tested-by: Gottfried Haider <gottfried.haider@gmail.com>
Tested-by: Michal Vokáč <michal.vokac@ysoft.com>
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: michal.vokac@ysoft.com (Michal Vokáč)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/2] pwm: send a uevent on the pwmchip device upon channel sysfs (un)export
Date: Mon, 1 Oct 2018 18:29:25 +0200 [thread overview]
Message-ID: <b43c5dd5-6ffd-5e5a-f4d0-86792feac304@ysoft.com> (raw)
In-Reply-To: <1538400237-28766-3-git-send-email-fabrice.gasnier@st.com>
On 1.10.2018 15:23, Fabrice Gasnier wrote:
> This patch sends a uevent (KOBJ_CHANGE) on the pwmchipN device, everytime
> a pwmX channel has been exported/unexported via sysfs.
> This allows udev to implement rules on such events, like:
>
> SUBSYSTEM=="pwm*", PROGRAM="/bin/sh -c '\
> chown -R root:gpio /sys/class/pwm && chmod -R 770 /sys/class/pwm;\
> chown -R root:gpio
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip* && chmod -R 770
> /sys/devices/platform/soc/*.pwm/pwm/pwmchip*\
> '"
>
> This is a replacement patch for commit 7e5d1fd75c3d ("pwm: Set class for
> exported channels in sysfs"), see [1].
>
> basic testing:
> $ udevadm monitor --environment &
> $ echo 0 > /sys/class/pwm/pwmchip0/export
> KERNEL[197.321736] change /devices/.../pwm/pwmchip0 (pwm)
> ACTION=change
> DEVPATH=/devices/.../pwm/pwmchip0
> EXPORT=pwm0
> SEQNUM=2045
> SUBSYSTEM=pwm
>
> [1] https://lkml.org/lkml/2018/9/25/713
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
> Tested-by: Gottfried Haider <gottfried.haider@gmail.com>
Tested-by: Michal Vok?? <michal.vokac@ysoft.com>
next prev parent reply other threads:[~2018-10-01 16:31 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-01 13:23 [PATCH v2 0/2] pwm: sysfs: fix exporting PWM channel Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 13:23 ` [PATCH v2 1/2] Revert "pwm: Set class for exported channels in sysfs" Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 16:27 ` Michal Vokáč
2018-10-01 16:27 ` Michal Vokáč
2018-10-01 13:23 ` [PATCH v2 2/2] pwm: send a uevent on the pwmchip device upon channel sysfs (un)export Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 13:23 ` Fabrice Gasnier
2018-10-01 16:29 ` Michal Vokáč [this message]
2018-10-01 16:29 ` Michal Vokáč
2018-10-01 16:29 ` Michal Vokáč
2018-10-01 16:24 ` [PATCH v2 0/2] pwm: sysfs: fix exporting PWM channel Michal Vokáč
2018-10-01 16:24 ` Michal Vokáč
2018-10-12 11:55 ` Thierry Reding
2018-10-12 11:55 ` Thierry Reding
2018-10-12 12:15 ` Stefan Wahren
2018-10-12 12:15 ` Stefan Wahren
2018-10-12 12:15 ` Stefan Wahren
2018-10-12 12:36 ` Fabrice Gasnier
2018-10-12 12:36 ` Fabrice Gasnier
2018-10-12 12:36 ` Fabrice Gasnier
2018-10-12 12:44 ` Vokáč Michal
2018-10-12 12:44 ` Vokáč Michal
2018-10-12 12:44 ` Vokáč Michal
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