Re: [PATCH v2 1/6] drm/msm/mdp5: Use per-plane rotation property

[Archit Taneja <architt@codeaurora.org>]

On 10/24/2016 03:45 PM, Ville Syrjälä wrote:
> On Mon, Oct 24, 2016 at 03:33:18PM +0530, Archit Taneja wrote:
>> Hi Ville,
>>
>> On 10/22/2016 12:52 AM, ville.syrjala@linux.intel.com wrote:
>>> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>>>
>>> The global mode_config.rotation_property is going away, switch over to
>>> per-plane rotation_property.
>>
>>
>> I was trying to test this on msm/drm using modetest. The 180 rotation
>> works fine, but drm rejects reflect-x and reflect-y rotation prop
>> values. Is this expected?
>>
>> I needed to make this modification to get reflect-x/y working too:
>>
>> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
>> index a747bb1..9fcc2c9 100644
>> --- a/drivers/gpu/drm/drm_atomic.c
>> +++ b/drivers/gpu/drm/drm_atomic.c
>> @@ -711,7 +711,7 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
>>   		state->src_h = val;
>>   	} else if (property == config->rotation_property ||
>>   		   property == plane->rotation_property) {
>> -		if (!is_power_of_2(val & DRM_ROTATE_MASK))
>> +		if (!is_power_of_2(val & (DRM_ROTATE_MASK | DRM_REFLECT_MASK)))
>
> That makes no sense. You _must_ to pass one and only one rotation angle.
> In *addition* you can pass any number of the reflection flags.

Okay. Does the rotation property also include reflection flags, though?

When I dump plane properties using modetest, I get:

31 rotation:
      flags: bitmask
      values: rotate-0=0x1 rotate-180=0x4 reflect-x=0x10 reflect-y=0x20
      value: 1

If I use modetest to set 0x10 or 0x20, it returns an error. I wanted to
know if this is expected behavior or not?

Thanks,
Archit

>
>>   			return -EINVAL;
>>   		state->rotation = val;
>>   	} else if (property == plane->zpos_property) {
>>
>>
>>
>> Otherwise, the patches look fine to me.
>>
>> Thanks,
>> Archit
>>
>>>
>>> v2: Drop the BIT()
>>>
>>> Cc: Rob Clark <robdclark@gmail.com>
>>> Cc: Jilai Wang <jilaiw@codeaurora.org>
>>> Cc: Archit Taneja <architt@codeaurora.org>
>>> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
>>> Reviewed-by: Rob Clark <robdclark@gmail.com>
>>> ---
>>>  drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c | 14 +++++---------
>>>  1 file changed, 5 insertions(+), 9 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
>>> index 951c002b05df..2653ad893ebc 100644
>>> --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
>>> +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
>>> @@ -75,15 +75,11 @@ static void mdp5_plane_install_rotation_property(struct drm_device *dev,
>>>  		!(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP))
>>>  		return;
>>>
>>> -	if (!dev->mode_config.rotation_property)
>>> -		dev->mode_config.rotation_property =
>>> -			drm_mode_create_rotation_property(dev,
>>> -				DRM_ROTATE_0 | DRM_REFLECT_X | DRM_REFLECT_Y);
>>> -
>>> -	if (dev->mode_config.rotation_property)
>>> -		drm_object_attach_property(&plane->base,
>>> -			dev->mode_config.rotation_property,
>>> -			DRM_ROTATE_0);
>>> +	drm_plane_create_rotation_property(plane,
>>> +					   DRM_ROTATE_0,
>>> +					   DRM_ROTATE_0 |
>>> +					   DRM_REFLECT_X |
>>> +					   DRM_REFLECT_Y);
>>>  }
>>>
>>>  /* helper to install properties which are common to planes and crtcs */
>>>
>>
>> --
>> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
>> a Linux Foundation Collaborative Project
>

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
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