[PATCH 4/7] drm/msm/dpu: enable INTF TE operations only when supported by HW

[Marijn Suijten]

On 2023-07-27 19:21:01, Dmitry Baryshkov wrote:
> The DPU_INTF_TE bit is set for all INTF blocks on DPU >= 5.0, however
> only INTF_1 and INTF_2 actually support tearing control. Rather than
> trying to fix the DPU_INTF_TE, check for the presense of the

I would more exactly expand "fix" to "Rather than specifying that
feature bit on DSI INTF_1 and INTF_2 exclusively..."

> corresponding interrupt line.

... which the catalog will only provide on DPU >= 5.0.

> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>

Reviewed-by: Marijn Suijten <marijn.suijten at somainline.org>

> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> index 7ca772791a73..8abdf9553f3b 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_intf.c
> @@ -557,7 +557,7 @@ struct dpu_hw_intf *dpu_hw_intf_init(const struct dpu_intf_cfg *cfg,
>  	c->ops.setup_misr = dpu_hw_intf_setup_misr;
>  	c->ops.collect_misr = dpu_hw_intf_collect_misr;
>  
> -	if (cfg->features & BIT(DPU_INTF_TE)) {
> +	if (cfg->intr_tear_rd_ptr) {
>  		c->ops.enable_tearcheck = dpu_hw_intf_enable_te;
>  		c->ops.disable_tearcheck = dpu_hw_intf_disable_te;
>  		c->ops.connect_external_te = dpu_hw_intf_connect_external_te;
> -- 
> 2.39.2
>