linux-kernel - Re: [PATCH] drm/virtio: print a single line with device features

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Date:   Wed, 23 Oct 2019 16:18:06 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Daniel Vetter <daniel@...ll.ch>, Gerd Hoffmann <kraxel@...hat.com>
Cc:     David Airlie <airlied@...ux.ie>,
        open list <linux-kernel@...r.kernel.org>,
        dri-devel@...ts.freedesktop.org,
        "open list\:VIRTIO GPU DRIVER" 
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH] drm/virtio: print a single line with device features

On Tue, 22 Oct 2019, Daniel Vetter <daniel@...ll.ch> wrote:
> On Fri, Oct 18, 2019 at 01:38:32PM +0200, Gerd Hoffmann wrote:
>> Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>
>> ---
>>  drivers/gpu/drm/virtio/virtgpu_kms.c | 9 ++++-----
>>  1 file changed, 4 insertions(+), 5 deletions(-)
>> 
>> diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
>> index 0b3cdb0d83b0..2f5773e43557 100644
>> --- a/drivers/gpu/drm/virtio/virtgpu_kms.c
>> +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
>> @@ -155,16 +155,15 @@ int virtio_gpu_init(struct drm_device *dev)
>>  #ifdef __LITTLE_ENDIAN
>>  	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL))
>>  		vgdev->has_virgl_3d = true;
>> -	DRM_INFO("virgl 3d acceleration %s\n",
>> -		 vgdev->has_virgl_3d ? "enabled" : "not supported by host");
>> -#else
>> -	DRM_INFO("virgl 3d acceleration not supported by guest\n");
>>  #endif
>>  	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_EDID)) {
>>  		vgdev->has_edid = true;
>> -		DRM_INFO("EDID support available.\n");
>>  	}
>>  
>> +	DRM_INFO("features: %cvirgl %cedid\n",
>> +		 vgdev->has_virgl_3d ? '+' : '-',
>> +		 vgdev->has_edid     ? '+' : '-');
>
> Maybe we should move the various yesno/onoff/enableddisabled helpers from
> i915_utils.h to drm_utils.h and use them more widely?

I'm trying to take it one step further by adding them to
include/linux/string-choice.h [1]. Maybe, uh, fourth time's the charm?

BR,
Jani.

[1] http://lore.kernel.org/r/20191023131308.9420-1-jani.nikula@intel.com


-- 
Jani Nikula, Intel Open Source Graphics Center