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Fri, 30 Oct 2020 05:01:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39832 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725784AbgJ3JBG (ORCPT ); Fri, 30 Oct 2020 05:01:06 -0400 Received: from mail-oi1-x241.google.com (mail-oi1-x241.google.com [IPv6:2607:f8b0:4864:20::241]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 47DF0C0613CF; Fri, 30 Oct 2020 01:51:51 -0700 (PDT) Received: by mail-oi1-x241.google.com with SMTP id y186so5960391oia.3; Fri, 30 Oct 2020 01:51:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=EYFsizROf5nBI3vjm3lc9058B7pQE1IZ4TMUM0yjHO0=; b=nrNLVNGDC4oTXZzPTuj6ZR2IgS0RpSwQa6MzJT2M14RHlHusbs8N/KdjeQODIa69Fq ZdSQ2+n4cipmdbZwOOHTgWsz/9K9056sO7RK6KwOPOg+CNEjITywQSQxgEzCZVFDmooV HfjseyEiG122IWq13MGtUc3gpURvmvQ23oFXZkO5bAqMj/eti7fpL3VJlmHzrj8Pn0ul i804miWfazPue1rTOMFnYjkM6PYEAdPsvCvCHy1x0R06Zywbj8icMgN6LLZiNdHdDmN3 TBV/YXettblZhpCdF0/9QtbjT4Td9+kE5uNNmlverT0JjOhrhQlVOJUhUeQjtTwsEBH6 IsDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=EYFsizROf5nBI3vjm3lc9058B7pQE1IZ4TMUM0yjHO0=; b=np6zQhoEhZBwPw8HVpj1zcqWcN2YPjLlotfli4QdgX3N5Ei/gjPiWiT/6DsilXHCBQ 9B3mFM2NPo6bLmHjRYQI6TO3ooyzp3zZ9A6ydiLZU93LuaZzjvZ5Oesc0heSnTtV62th dFaT2Z3ZgEPhQ5i6zqh6MTfFoAnz7OI8EmRFzrDUVK1sGsSKBv/JXor9Q12fKPMUdU2g oVJ+MF0oAKNgDmTlUFoARY1SHbKsVQpK3M+ex4Rv5iopdVqXWEuVrKrC2G0Yj4NT6/3a dHLNSyAOZ0XBNEx8SmWOnQDO8MJ902aEdsHXKPnYswwGzvxDnDPKSlxPbjHXdoh3npMn 6RPQ== X-Gm-Message-State: AOAM5329oAdMDbWI6jWDRe6MimL1pwIZeVTY4EGjVIzMc6KP+1Ljx3BG /SgEQbDOadQb2KXWohg6OSFtpofW9uzmargoxncxuPdtkXI= X-Google-Smtp-Source: ABdhPJx9L8WP509ApHzlkJwOOPZ2gkvUW+8ERNKkSL/KG2e7sSxeTIuKtZ55i3auP6YV2QGpiqwTKhXntRWz+/14P6I= X-Received: by 2002:aca:4c8d:: with SMTP id z135mr891137oia.23.1604047910543; Fri, 30 Oct 2020 01:51:50 -0700 (PDT) MIME-Version: 1.0 References: <1602034966-3524-1-git-send-email-gene.chen.richtek@gmail.com> <1602034966-3524-3-git-send-email-gene.chen.richtek@gmail.com> <5a9b31c4-739c-06fc-2015-ed474993ad22@gmail.com> <8925db23-5cc4-3c5f-932a-461fe6450dad@gmail.com> <1bb76c54-14af-6c78-4623-77c6678b262e@gmail.com> In-Reply-To: <1bb76c54-14af-6c78-4623-77c6678b262e@gmail.com> From: Gene Chen Date: Fri, 30 Oct 2020 16:51:38 +0800 Message-ID: Subject: Re: [PATCH v5 2/2] leds: mt6360: Add LED driver for MT6360 To: Jacek Anaszewski Cc: Pavel Machek , Rob Herring , Matthias Brugger , Dan Murphy , Linux LED Subsystem , devicetree , linux-arm Mailing List , "moderated list:ARM/Mediatek SoC support" , Linux Kernel Mailing List , Gene Chen , Wilma.Wu@mediatek.com, shufan_lee@richtek.com, cy_huang@richtek.com, benjamin.chao@mediatek.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Jacek Anaszewski =E6=96=BC 2020=E5=B9=B410=E6= =9C=8828=E6=97=A5 =E9=80=B1=E4=B8=89 =E4=B8=8A=E5=8D=881:28=E5=AF=AB=E9=81= =93=EF=BC=9A > > On 10/27/20 10:28 AM, Gene Chen wrote: > > Jacek Anaszewski =E6=96=BC 2020=E5=B9=B410= =E6=9C=8821=E6=97=A5 =E9=80=B1=E4=B8=89 =E4=B8=8A=E5=8D=885:47=E5=AF=AB=E9= =81=93=EF=BC=9A > >> > >> On 10/20/20 8:44 AM, Gene Chen wrote: > >>> Jacek Anaszewski =E6=96=BC 2020=E5=B9=B4= 10=E6=9C=889=E6=97=A5 =E9=80=B1=E4=BA=94 =E4=B8=8A=E5=8D=885:51=E5=AF=AB=E9= =81=93=EF=BC=9A > >>>> > >>>> Hi Gene, > >>>> > >>>> On 10/7/20 3:42 AM, Gene Chen wrote: > >>>>> From: Gene Chen > >>>>> > >>>>> Add MT6360 LED driver include 2-channel Flash LED with torch/strobe= mode, > >>>>> 3-channel RGB LED support Register/Flash/Breath Mode, and 1-channel= for > >>>>> moonlight LED. > >>>>> > >>>>> Signed-off-by: Gene Chen > >>>>> --- > >>>>> drivers/leds/Kconfig | 12 + > >>>>> drivers/leds/Makefile | 1 + > >>>>> drivers/leds/leds-mt6360.c | 783 ++++++++++++++++++++++++++++++= +++++++++++++++ > >>>>> 3 files changed, 796 insertions(+) > >>>>> create mode 100644 drivers/leds/leds-mt6360.c > >>>>> > >>>>> diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig > >>>>> index 1c181df..c7192dd 100644 > >>>>> --- a/drivers/leds/Kconfig > >>>>> +++ b/drivers/leds/Kconfig > >>>>> @@ -271,6 +271,18 @@ config LEDS_MT6323 > >>>>> This option enables support for on-chip LED drivers found= on > >>>>> Mediatek MT6323 PMIC. > >>>>> > >>>>> +config LEDS_MT6360 > >>>>> + tristate "LED Support for Mediatek MT6360 PMIC" > >>>>> + depends on LEDS_CLASS_FLASH && OF > >>>>> + depends on LEDS_CLASS_MULTICOLOR > >>>> > >>>> Since CONFIG_LED_CLASS_MULTICOLOR can be turned off you need to have > >>>> below instead: > >>>> > >>>> depends on LEDS_CLASS_MULTICOLOR || !!LEDS_CLASS_MULTICOLOR > > My typo here, should be one "!": > > depends on LEDS_CLASS_MULTICOLOR || !LEDS_CLASS_MULTICOLOR > > And you should also have > > depends on LEDS_CLASS_FLASH || !LEDS_CLASS_FLASH > > But to make it work correctly you would have to add registration > stubs to include/linux/led-class-flash.h similarly to LED mc stubs > in include/linux/led-class-multicolor.h. > > >>>> > >>>> Unless you want to prevent enabling the driver without RGB LED, > >>>> but that does not seem to be reasonable at first glance. > >>>> > >>> > >>> May I change to "select LEDS_CLASS_MULTICOLOR"? > >>> I suppose RGB always use multicolor mode. > >> > >> You will also have moonlight LED that will not need multicolor > >> framework. Is it somehow troublesome to keep "depends on"? > >> > > > > If only use ML LED and FLED, DTSI will only define ML LED and FLED. > > Therefore, the drivers probe will not register rgb multicolor device. > > Please test your use case again with my fixed "depends on". > > In case when there is only ML LED and FLED in the DT it should > register both devices if LEDS_CLASS_FLASH is turned on. > Multicolor framework has nothing to do in this case. > > But if you additionally had MC LED node, then it should > be registered only if LEDS_CLASS_MULTICOLOR is enabled. > > Similarly, when FLED node is present, but LEDS_CLASS_FLASH > is off, and LEDS_CLASS_MULTICOLOR is on, the driver should still > compile, but register only LED MC device (if its node is present). > I think this case only register LED device, not LED "MC" device. Because our FLASH is not a multicolor device. > Possible should be also the case when both LEDS_CLASS_FLASH > and LEDS_CLASS_MULTICOLOR are off. Then only LED class device > for ML LED will be registered (provided there is ML DT node). > But to make it possible you should have also "depends on LEDS_CLASS" > in the Kconfig entry. > According to your suggestion, depends on LED_CLASS && LEDS_CLASS_FLASH && OF depends on LEDS_CLASS_MULTICOLOR || !!LEDS_CLASS_MULTICOLOR depends on LEDS_CLASS_FLASH || !LEDS_CLASS_FLASH depends on MFD_MT6360 and source code add constraint #if IS_ENABLED(CONFIG_LEDS_CLASS_MULTICOLOR) ret =3D devm_led_classdev_multicolor_register_ext(parent, &led->rgb, init_data); #endif #if IS_ENABLED(CONFIG_LEDS_CLASS_FLASH) ret =3D devm_led_classdev_flash_register_ext(parent, &led->flash, init_= data); #endif =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Or Should I seperate two drivers? one for RGB LED, one for ML LED and FLED > > I will remove "depends", use "select" instead. > > -- > Best regards, > Jacek Anaszewski From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 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( 30.80 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm Mailing List , devicetree , cy_huang@richtek.com, Linux Kernel Mailing List , Gene Chen , benjamin.chao@mediatek.com, Rob Herring , "moderated list:ARM/Mediatek SoC support" , Dan Murphy , Pavel Machek , Matthias Brugger , Wilma.Wu@mediatek.com, Linux LED Subsystem , shufan_lee@richtek.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org SmFjZWsgQW5hc3pld3NraSA8amFjZWsuYW5hc3pld3NraUBnbWFpbC5jb20+IOaWvCAyMDIw5bm0 MTDmnIgyOOaXpSDpgLHkuIkg5LiK5Y2IMToyOOWvq+mBk++8mgo+Cj4gT24gMTAvMjcvMjAgMTA6 MjggQU0sIEdlbmUgQ2hlbiB3cm90ZToKPiA+IEphY2VrIEFuYXN6ZXdza2kgPGphY2VrLmFuYXN6 ZXdza2lAZ21haWwuY29tPiDmlrwgMjAyMOW5tDEw5pyIMjHml6Ug6YCx5LiJIOS4iuWNiDU6NDfl 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linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm Mailing List , devicetree , cy_huang@richtek.com, Linux Kernel Mailing List , Gene Chen , benjamin.chao@mediatek.com, Rob Herring , "moderated list:ARM/Mediatek SoC support" , Dan Murphy , Pavel Machek , Matthias Brugger , Wilma.Wu@mediatek.com, Linux LED Subsystem , shufan_lee@richtek.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org SmFjZWsgQW5hc3pld3NraSA8amFjZWsuYW5hc3pld3NraUBnbWFpbC5jb20+IOaWvCAyMDIw5bm0 MTDmnIgyOOaXpSDpgLHkuIkg5LiK5Y2IMToyOOWvq+mBk++8mgo+Cj4gT24gMTAvMjcvMjAgMTA6 MjggQU0sIEdlbmUgQ2hlbiB3cm90ZToKPiA+IEphY2VrIEFuYXN6ZXdza2kgPGphY2VrLmFuYXN6 ZXdza2lAZ21haWwuY29tPiDmlrwgMjAyMOW5tDEw5pyIMjHml6Ug6YCx5LiJIOS4iuWNiDU6NDfl 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