[PATCH v4 01/15] drm/msm/dpu: add formats check for writeback encoder

[Abhinav Kumar]

On 12/12/2023 2:03 PM, Dmitry Baryshkov wrote:
> On Tue, 12 Dec 2023 at 23:30, Dmitry Baryshkov
> <dmitry.baryshkov at linaro.org> wrote:
>>
>> On Tue, 12 Dec 2023 at 22:53, Abhinav Kumar <quic_abhinavk at quicinc.com> wrote:
>>>
>>> In preparation for adding more formats to dpu writeback add
>>> format validation to it to fail any unsupported formats.
>>>
>>> changes in v4:
>>>          - change the failure message of the API
>>>            drm_atomic_helper_check_wb_connector_state() to a generic
>>>            one in case it checks more errors later and moreoever it
>>>            already has debug message to indicate its failure
>>>          - change the corresponding DPU_ERROR to DPU_DEBUG in-line with
>>>            other atomic_check failure messages
>>>
>>> changes in v3:
>>>          - rebase on top of msm-next
>>>          - replace drm_atomic_helper_check_wb_encoder_state() with
>>>            drm_atomic_helper_check_wb_connector_state() due to the
>>>            rebase
>>>
>>> changes in v2:
>>>          - correct some grammar in the commit text
>>>
>>> Fixes: d7d0e73f7de3 ("drm/msm/dpu: introduce the dpu_encoder_phys_* for writeback")
>>> Signed-off-by: Abhinav Kumar <quic_abhinavk at quicinc.com>
>>> ---
>>>   drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c | 7 +++++++
>>>   1 file changed, 7 insertions(+)
>>>
>>> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> index bb94909caa25..4953d87affa1 100644
>>> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder_phys_wb.c
>>> @@ -272,6 +272,7 @@ static int dpu_encoder_phys_wb_atomic_check(
>>>   {
>>>          struct drm_framebuffer *fb;
>>>          const struct drm_display_mode *mode = &crtc_state->mode;
>>> +       int ret;
>>>
>>>          DPU_DEBUG("[atomic_check:%d, \"%s\",%d,%d]\n",
>>>                          phys_enc->hw_wb->idx, mode->name, mode->hdisplay, mode->vdisplay);
>>> @@ -308,6 +309,12 @@ static int dpu_encoder_phys_wb_atomic_check(
>>>                  return -EINVAL;
>>>          }
>>>
>>> +       ret = drm_atomic_helper_check_wb_connector_state(conn_state->connector, conn_state->state);
>>> +       if (ret < 0) {
>>> +               DPU_DEBUG("wb check connector state failed ret = %d\n", ret);
>>
>> We already have a debug message in
>> drm_atomic_helper_check_wb_connector_state(). Can we please drop this
>> one?
> 
> If you don't mind, I can just drop it while applying
> 

Ack. Thank you.

>>
>>> +               return ret;
>>> +       }
>>> +
>>>          return 0;
>>>   }
>>>
>>> --
>>> 2.40.1
>>>
>>
>>
>> --
>> With best wishes
>> Dmitry
> 
> 
>