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

[Archit Taneja <architt@codeaurora.org>]

On 10/24/2016 03:55 PM, Ville Syrjälä wrote:
> On Mon, Oct 24, 2016 at 03:52:09PM +0530, Archit Taneja wrote:
>>
>>
>> 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?
>
> Yes.
>
>>
>> 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?
>
> It is. If you want 0 degree rotation with X reflection you have to pass
> 0x11.

Ah okay, didn't realize I had to put a 0 degree rotation along with the
reflect. Works fine with 0x11. Thanks for the clarification.

Archit

>
>>
>> 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
>

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