On 18/02/2022 23:46, Abhinav Kumar wrote:
On 2/16/2022 11:12 PM, Dmitry Baryshkov wrote:
On 17/02/2022 09:33, Abhinav Kumar wrote:
On 2/16/2022 10:10 PM, Vinod Koul wrote:
On 16-02-22, 19:11, Abhinav Kumar wrote:
On 2/10/2022 2:34 AM, Vinod Koul wrote:
We cannot enable mode_3d when we are using the DSC. So pass
configuration to detect DSC is enabled and not enable mode_3d
when we are using DSC
We add a helper dpu_encoder_helper_get_dsc() to detect dsc
enabled and pass this to .setup_intf_cfg()
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
We should not use 3D mux only when we use DSC merge topology.
I agree that today we use only 2-2-1 topology for DSC which means
its using
DSC merge.
But generalizing that 3D mux should not be used for DSC is not right.
You can detect DSC merge by checking if there are two encoders and one
interface in the topology and if so, you can disable 3D mux.
Right now with DSC we disable that as suggested by Dmitry last time.
Whenever we introduce merge we should revisit this, for now this should
suffice
Sorry I didnt follow.
The topology which you are supporting today IS DSC merge 2-2-1. I
didnt get what you mean by "whenever we introduce".
I didnt follow Dmitry's comment either.
"anybody adding support for SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE_DSC
handle this."
3D mux shouldnt be used when DSC merge is used.
The topology Dmitry is referring to will not use DSC merge but you
are using it here and thats why you had to make this patch in the
first place. So I am not sure why would someone who uses 3D merge
topology worry about DSC merge. Your patch is the one which deals
with the topology in question.
What I am suggesting is a small but necessary improvement to this patch.
It seems that we can replace this patch by changing
dpu_encoder_helper_get_3d_blend_mode() to contain the following
condition (instead of the one present there). Does the following seem
correct to you:
static inline enum dpu_3d_blend_mode
dpu_encoder_helper_get_3d_blend_mode(
struct dpu_encoder_phys *phys_enc)
{
struct dpu_crtc_state *dpu_cstate;
if (!phys_enc || phys_enc->enable_state == DPU_ENC_DISABLING)
return BLEND_3D_NONE;
dpu_cstate = to_dpu_crtc_state(phys_enc->parent->crtc->state);
+ /* Use merge_3d unless DSCMERGE topology is used */
if (phys_enc->split_role == ENC_ROLE_SOLO &&
+ hweight(dpu_encoder_helper_get_dsc(phys_enc)) != 1 &&
Yes, the correct should be:
hweight(...) == 2
dpu_cstate->num_mixers == CRTC_DUAL_MIXERS)
return BLEND_3D_H_ROW_INT;
return BLEND_3D_NONE;
}
This will not be enough. To detect whether DSC merge is enabled you need
to query the topology. The above condition only checks if DSC is enabled
not DSC merge.
So the above function can be modified to use a helper like below instead
of the hweight.
bool dpu_encoder_get_dsc_merge_info(struct dpu_encoder_virt *dpu_enc)
{
struct msm_display_topology topology = {0};
topology = dpu_encoder_get_topology(...);
if (topology.num_dsc > topology.num_intf)
num_intf is 1 or 2. If it's one, the split_role is SOLO
hweight would return a num of bits in the DSC mask. It's 0, 1 or 2.
So, if the split_role is SOLO and hweight is 2, we get exactly your
condition.
Does that sound correct?
return true;
else
return false;
}
if (!dpu_encoder_get_dsc_merge_info() && other conditions listed above)
return BLEND_3D_H_ROW_INT;
else
BLEND_3D_NONE;
All that you have to do is in query whether DSC merge is used from
the topology. You can do it in multiple ways:
1) Either query this from the encoder
2) Store a bool "dsc_merge" in the intf_cfg
--
With best wishes
Dmitry
