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SubjectRe: [PATCH 0/7] Move dell-led to drivers/platform/x86
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Hi Michał,

Thanks for the patch set.

On 12/08/2016 01:36 PM, Michał Kępień wrote:
> This patch series moves the dell-led driver from the LED subsystem to
> the x86 platform driver subsystem. I decided to also CC the sound
> subsystem contacts for the whole series as
> sound/pci/hda/dell_wmi_helper.c is also affected.
>
> The original motivation behind this effort was to move all code using
> the dell-smbios module to the x86 platform driver subsystem. While I
> was investigating the possibilites to do that, it quickly emerged that
> dell-led can and in fact should be moved to the x86 platform driver
> subsystem in its entirety.
>
> dell-led consists of two major parts:
>
> - the part exposing a microphone mute LED interface, introduced in
> db6d8cc ("dell-led: add mic mute led interface"); this interface is
> used by sound/pci/hda/dell_wmi_helper.c; while the original
> implementation used a WMI interface, it was changed to use
> dell-smbios in cf0d7ea ("dell-led: use dell_smbios_find_token() for
> finding mic DMI tokens") and 0c41a08 ("dell-led: use
> dell_smbios_send_request() for performing SMBIOS calls"),
>
> - the part handling an activity LED present in Dell Latitude 2100
> netbooks, introduced in 72dcd8d ("leds: Add Dell Business Class
> Netbook LED driver"); it binds to a specific WMI GUID and then
> registers a LED device which is controlled using WMI (i.e. it is
> basically a WMI driver).
>
> Patches 1-4 clean up the microphone mute LED interface to minimize the
> amount of code moved around.
>
> Patch 5 moves the microphone mute LED interface to
> drivers/platform/x86/dell-laptop.c, effectively causing
> sound/pci/hda/dell_wmi_helper.c to depend on CONFIG_DELL_LAPTOP instead
> of CONFIG_LEDS_DELL_NETBOOKS.
>
> Patch 6 reverts dell-led to the state it was in after its initial commit
> 72dcd8d ("leds: Add Dell Business Class Netbook LED driver") by removing
> all remnants of the microphone mute LED handling code.
>
> Patch 7 moves all that is left of dell-led (i.e. the activity LED part,
> as originally implemented), to a new module which is placed in
> drivers/platform/x86/dell-wmi-led.c.
>
> This patch series is based on linux-leds/for-4.11 as the LED subsystem
> is affected by all patches except patch 3.
>
> If anyone reading this has access to a Dell device which has an activity
> LED and/or a microphone mute LED currently supported by dell-led, I
> would love to hear from you as I do not have the hardware needed to
> practically test this patch series.

I think that it is necessary to find someone who will give their
Tested-by.

What I can accept immediately is moving the driver in the current
shape to x86 platform drivers. I could expose a stable branch with
that patch for the x86 platform maintainers then.

> drivers/leds/Kconfig | 9 ---
> drivers/leds/Makefile | 1 -
> drivers/platform/x86/Kconfig | 8 +++
> drivers/platform/x86/Makefile | 1 +
> drivers/platform/x86/dell-laptop.c | 28 ++++++++
> .../dell-led.c => platform/x86/dell-wmi-led.c} | 75 +++-------------------
> include/linux/dell-led.h | 6 +-
> sound/pci/hda/dell_wmi_helper.c | 18 +++---
> 8 files changed, 55 insertions(+), 91 deletions(-)
> rename drivers/{leds/dell-led.c => platform/x86/dell-wmi-led.c} (73%)
>


--
Best regards,
Jacek Anaszewski

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