From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 660DBC76190 for ; Thu, 25 Jul 2019 19:00:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 34E22206DD for ; Thu, 25 Jul 2019 19:00:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726422AbfGYTAQ (ORCPT ); Thu, 25 Jul 2019 15:00:16 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:47200 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726303AbfGYTAQ (ORCPT ); Thu, 25 Jul 2019 15:00:16 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: koike) with ESMTPSA id 1B45E28BD73 Subject: Re: [PATCH 2/2] media: Don't hide any menu if "ancillary drivers autoselect" is enabled To: Mauro Carvalho Chehab , Chen-Yu Tsai Cc: Ezequiel Garcia , Hans Verkuil , kernel@collabora.com, Linux Media Mailing List References: <20190715212316.352-1-ezequiel@collabora.com> <20190715212316.352-3-ezequiel@collabora.com> <20190725125730.2218f0a8@coco.lan> <20190725154111.7fc7e335@coco.lan> From: Helen Koike Openpgp: preference=signencrypt Autocrypt: addr=helen.koike@collabora.com; keydata= mQINBFmOMD4BEADb2nC8Oeyvklh+ataw2u/3mrl+hIHL4WSWtii4VxCapl9+zILuxFDrxw1p XgF3cfx7g9taWBrmLE9VEPwJA6MxaVnQuDL3GXxTxO/gqnOFgT3jT+skAt6qMvoWnhgurMGH wRaA3dO4cFrDlLsZIdDywTYcy7V2bou81ItR5Ed6c5UVX7uTTzeiD/tUi8oIf0XN4takyFuV Rf09nOhi24bn9fFN5xWHJooFaFf/k2Y+5UTkofANUp8nn4jhBUrIr6glOtmE0VT4pZMMLT63 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JkgmmesIAw8mpI6EeLmReUJLasz8QkzhZIC7t5rGlQI94GQG3Jg2dC+kpaGWOaT5G4FVMcBj iR1nXfMxENVYnM5ag7mBZyD/kru5W1Uj34L6AFaDMXFPwedSCpzzqUiHb0f+nYkfOodf5xy0 46+3THy/NUS/ZZp/rI4F7Y77+MQPVg7vARfHHX1AxYUKfRVW5j88QUB70txn8Vgi1tDrOr4J eD+xr0CvIGa5lKqgQacQtGkpOpJ8zY4ObSvpNubey/qYUE3DCXD0n2Xxk4muTvqlkFpOYA== Message-ID: <4517f590-dcda-5bf0-70dd-3cffc5d71ba3@collabora.com> Date: Thu, 25 Jul 2019 16:00:02 -0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <20190725154111.7fc7e335@coco.lan> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On 7/25/19 3:41 PM, Mauro Carvalho Chehab wrote: > Em Fri, 26 Jul 2019 01:29:58 +0800 > Chen-Yu Tsai escreveu: > >> On Fri, Jul 26, 2019 at 1:06 AM Ezequiel Garcia wrote: >>> >>> On Thu, 2019-07-25 at 12:57 -0300, Mauro Carvalho Chehab wrote: >>>> Em Mon, 15 Jul 2019 18:23:16 -0300 >>>> Ezequiel Garcia escreveu: >>>> >>>>> Many users have been complaining about not being able to find >>>>> certain menu options. One such example are camera sensor drivers >>>>> (e.g IMX219, OV5645, etc) which are common on embedded platforms >>>>> and not always ancillary devices. >>>>> >>>>> The problem with MEDIA_SUBDRV_AUTOSELECT seems to be related >>>>> to the fact that it uses the "visible" kbuild syntax to hide >>>>> entire group of drivers. >>>>> >>>>> This is not obvious and, as explained above, not always desired. >>>>> >>>>> To fix the problem, drop the "visible" and stop hiding any menu >>>>> options. Users skilled enough to configure their kernel are expected >>>>> to be skilled enough to know what (not) to configure anyway. >>>>> >>>>> Signed-off-by: Ezequiel Garcia >>>>> --- >>>>> drivers/media/dvb-frontends/Kconfig | 1 - >>>>> drivers/media/i2c/Kconfig | 1 - >>>>> drivers/media/spi/Kconfig | 1 - >>>>> drivers/media/tuners/Kconfig | 1 - >>>>> 4 files changed, 4 deletions(-) >>>>> >>>>> diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig >>>>> index dc43749177df..2d1fea3bf546 100644 >>>>> --- a/drivers/media/dvb-frontends/Kconfig >>>>> +++ b/drivers/media/dvb-frontends/Kconfig >>>>> @@ -1,5 +1,4 @@ >>>>> menu "Customise DVB Frontends" >>>>> - visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT >>>>> >>>>> comment "Multistandard (satellite) frontends" >>>>> depends on DVB_CORE >>>>> diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig >>>>> index 79ce9ec6fc1b..475072bb67d6 100644 >>>>> --- a/drivers/media/i2c/Kconfig >>>>> +++ b/drivers/media/i2c/Kconfig >>>>> @@ -23,7 +23,6 @@ config VIDEO_IR_I2C >>>>> # >>>>> >>>>> menu "I2C Encoders, decoders, sensors and other helper chips" >>>>> - visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT >>>> >>>> Hmm... Hans picked this patch, but IMO it doesn't make sense >>>> for PC consumer people to see the hundreds of extra options >>>> that making those menus visible will produce. >>>> >>>> This was added because in the past we had lots of issues with >>>> people desktop/laptop settings with all those things enabled. >>>> >>>> In any case, if the desktop/laptop user is smart enough to >>>> go though it, he can simply disable MEDIA_SUBDRV_AUTOSELECT and >>>> manually select what he wants, so I really miss the point of >>>> making those stuff always visible. >>>> >>>> Now, from this patch's comments, it seems that you want this >>>> to be visible if CONFIG_EMBEDDED. So, I won't complain if you >>>> replace the changes on this patch to: >>>> >>>> menu "foo" >>>> visible if !MEDIA_SUBDRV_AUTOSELECT || !EMBEDDED || COMPILE_TEST || EXPERT >>>> >>>> In other words, for the normal guy that just wants to build the >>>> latest media stuff for his PC camera or TV device to work, he won't >>>> need to dig into hundreds of things that won't make any difference >>>> if he enables, except for making the Kernel bigger. >>>> >>> >>> Well, I think the real value of MEDIA_SUBDRV_AUTOSELECT is the autoselection, >>> not the hidden part. I'm really missing to see what hiding anything gives you. >>> >>> In other words, this option gets useful when driver authors select ancillary >>> drivers such as: >>> >>> config VIDEO_USBVISION >>> tristate "USB video devices based on Nogatech NT1003/1004/1005" >>> depends on I2C && VIDEO_V4L2 >>> select VIDEO_TUNER >>> select VIDEO_SAA711X if MEDIA_SUBDRV_AUTOSELECT >>> >>> What's so confusing about having these drivers visible? Compared to the >>> rest of the zillion menu options, what's more confusing about seeing these? >>> >>> Now, while I would agree with EMBEDDED, the problem with that is that >>> many "embedded" platforms don't enable EMBEDDED. So, it's not that useful. >>> >>> Finally, let me give an example of why hiding the menus is so bad. >>> Normally, to enable a symbol, we use the search tool. >>> >>> Now, when MEDIA_SUBDRV_AUTOSELECT=y, the search tool will _not_ take you >>> there and there's no indication why. >> >> As someone who has done so in the past year, I agree it's confusing. >> I had to dig through the Kconfig files to figure out which knobs to >> turn to get the OV5640 option out. The description says "auto-selecting", I had this same problem. > > Well, the text and/or the help message can be changed, if it is not > clear enough, but this option was added because we had too many issues > with users trying to build drivers for their devices without being > able to do that, because selecting thousands of devices is something > that an average PC user has troubles. > > I'm all to improve it, provided that we don't make harder for non-devs > to build the Kernel. > >> which does not equal hiding everything. You could still have drivers >> auto-selected (or not) based on a Kconfig option without hiding things. >> Another idea is to separate in two options, MEDIA_SUBDRV_AUTOSELECT and MEDIA_SUBDRV_ADVANCED, where the first one autoselects things and the later enables more options. Helen >> ChenYu > > > > Thanks, > Mauro >