Em Thu, 25 Jul 2019 20:55:13 -0300 Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> escreveu: > On Thu, 2019-07-25 at 15:41 -0300, Mauro Carvalho Chehab wrote: > > Em Fri, 26 Jul 2019 01:29:58 +0800 > > Chen-Yu Tsai <wens@xxxxxxxxxx> escreveu: > > > > > On Fri, Jul 26, 2019 at 1:06 AM Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> 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 <ezequiel@xxxxxxxxxxxxx> 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 <ezequiel@xxxxxxxxxxxxx> > > > > > > --- > > > > > > 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", > > > > 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. > > > > I just recalled Buildroot made extensive use of comments, > so how about this instead: > > From fdbb96242422823a6df59cf457ebd19f83e45ffe Mon Sep 17 00:00:00 2001 > From: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> > Date: Thu, 25 Jul 2019 20:45:07 -0300 > Subject: [PATCH] media: Clarify how menus are hidden by SUBDRV_AUTOSELECT > > Some users have been having a hard time finding certain menu > options. One such example are camera sensor drivers > (e.g IMX219, OV5645, etc) which are common on embedded > platforms and not really "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 it normally takes some time to > figure out. > > To fix the problem, add a comment on each of hidden menus, > which should clarify what option is causing menus to be hidden. > > Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> > --- > drivers/media/dvb-frontends/Kconfig | 3 +++ > drivers/media/i2c/Kconfig | 3 +++ > drivers/media/spi/Kconfig | 3 +++ > drivers/media/tuners/Kconfig | 4 ++++ > 4 files changed, 13 insertions(+) > > diff --git a/drivers/media/dvb-frontends/Kconfig b/drivers/media/dvb-frontends/Kconfig > index dc43749177df..5e2ba9d03662 100644 > --- a/drivers/media/dvb-frontends/Kconfig > +++ b/drivers/media/dvb-frontends/Kconfig > @@ -1,3 +1,6 @@ > +comment "DVB Frontend drivers hidden by 'Autoselect ancillary drivers'" > + depends on !(!MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT) > + > menu "Customise DVB Frontends" > visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT Makes sense to me. Yet, it will keep repeating the same dependency logic everywhere. Maybe we could have something like: config MEDIA_SIMPLIFY_SELECT bool depends on !(!MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT) default y (yeah, the name sucks - feel free to suggest a better name for the symbol) and use it instead of keeping repeating the same if over and over. > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index 79ce9ec6fc1b..a110fa53233f 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -22,6 +22,9 @@ config VIDEO_IR_I2C > # Encoder / Decoder module configuration > # > > +comment "I2C drivers hidden by 'Autoselect ancillary drivers'" > + depends on !(!MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT) > + > menu "I2C Encoders, decoders, sensors and other helper chips" > visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT > > diff --git a/drivers/media/spi/Kconfig b/drivers/media/spi/Kconfig > index 08386abb9bbc..da1750f86bbc 100644 > --- a/drivers/media/spi/Kconfig > +++ b/drivers/media/spi/Kconfig > @@ -1,6 +1,9 @@ > # SPDX-License-Identifier: GPL-2.0-only > if VIDEO_V4L2 > > +comment "SPI drivers hidden by 'Autoselect ancillary drivers'" > + depends on !(!MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT) > + > menu "SPI helper chips" > visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT > > diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig > index a7108e575e9b..e017e09d5374 100644 > --- a/drivers/media/tuners/Kconfig > +++ b/drivers/media/tuners/Kconfig > @@ -15,6 +15,10 @@ config MEDIA_TUNER > select MEDIA_TUNER_TDA9887 if MEDIA_SUBDRV_AUTOSELECT > select MEDIA_TUNER_MC44S803 if MEDIA_SUBDRV_AUTOSELECT > > +comment "Tuner drivers hidden by 'Autoselect ancillary drivers'" > + depends on !(!MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT) > + depends on MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT || MEDIA_RADIO_SUPPORT || MEDIA_SDR_SUPPORT > + > menu "Customize TV tuners" > visible if !MEDIA_SUBDRV_AUTOSELECT || COMPILE_TEST || EXPERT > depends on MEDIA_ANALOG_TV_SUPPORT || MEDIA_DIGITAL_TV_SUPPORT || MEDIA_RADIO_SUPPORT || MEDIA_SDR_SUPPORT Thanks, Mauro
