Re: [meta-raspberrypi][PATCH 5/5] rpi-default-providers: Switch providers according to used gfx stack

[Javier Martinez Canillas <javier@osg.samsung.com>]

Hello Khem,

On 08/04/2015 09:01 PM, Khem Raj wrote:
> 
>> On Jul 30, 2015, at 1:34 AM, Javier Martinez Canillas <javier@osg.samsung.com> wrote:
>>
>> From: Derek Foreman <derekf@osg.samsung.com>
>>
>> The Raspberry Pi boards can use one of two graphics stacks: The "userland"
>> user-space driver or the VC4 drm/kms kernel driver. This patch allows the
>> user to choose if the VC4 driver has to be used instead and set the right
>> preferred providers for that case.
>>
>> Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
>> [javier: Extend commit msg and made conditional instead removing userland]
>> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
>>
>> ---
>>
>> conf/machine/include/rpi-default-providers.inc | 8 ++++----
>> conf/machine/include/rpi-default-versions.inc  | 2 +-
>> 2 files changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/conf/machine/include/rpi-default-providers.inc b/conf/machine/include/rpi-default-providers.inc
>> index ee3a3acce7bd..233f177bd16e 100644
>> --- a/conf/machine/include/rpi-default-providers.inc
>> +++ b/conf/machine/include/rpi-default-providers.inc
>> @@ -3,8 +3,8 @@
>> PREFERRED_PROVIDER_virtual/kernel = "linux-raspberrypi"
>> PREFERRED_PROVIDER_u-boot = "u-boot-rpi"
>> PREFERRED_PROVIDER_virtual/xserver = "xserver-xorg"
>> -PREFERRED_PROVIDER_virtual/egl ?= "userland"
>> -PREFERRED_PROVIDER_virtual/libgles2 ?= "userland"
>> -PREFERRED_PROVIDER_virtual/libgl ?= "mesa-gl"
>> -PREFERRED_PROVIDER_virtual/mesa ?= "mesa-gl"
>> +PREFERRED_PROVIDER_virtual/egl ?= "${@bb.utils.contains('DISTRO_FEATURES', 'vc4-gfx', 'mesa', 'userland', d)}"
>> +PREFERRED_PROVIDER_virtual/libgles2 ?= "${@bb.utils.contains('DISTRO_FEATURES', 'vc4-gfx', 'mesa', 'userland', d)}"
>> +PREFERRED_PROVIDER_virtual/libgl ?= "${@bb.utils.contains('DISTRO_FEATURES', 'vc4-gfx', 'mesa', 'mesa-gl', d)}"
>> +PREFERRED_PROVIDER_virtual/mesa ?= "${@bb.utils.contains('DISTRO_FEATURES', 'vc4-gfx', 'mesa', 'mesa-gl', d)}”
> 
> who defines the distro feature ?
> 
> 

Distro features AFAICT are user defined options, you can for example have
the following in your conf/local.conf:

DISTRO_FEATURES_append = " vc4-gfx"

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America