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SubjectRe: [PATCH v3 3/9] drm: xlnx: zynqmp_dpsub: Add connected live layer helper
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On 21/03/2024 22:43, Anatoliy Klymenko wrote:
> Add a helper function capturing the first connected live display layer
> discovery logic.
>
> Signed-off-by: Anatoliy Klymenko <anatoliy.klymenko@amd.com>
> ---
> drivers/gpu/drm/xlnx/zynqmp_dp.c | 37 +++++++++++++++++++++++--------------
> 1 file changed, 23 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> index 04b6bcac3b07..4faafdd76798 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c
> @@ -1276,28 +1276,40 @@ static void zynqmp_dp_encoder_mode_set_stream(struct zynqmp_dp *dp,
> * DISP Configuration
> */
>
> +/**
> + * zynqmp_dp_disp_connected_live_layer - Return the first connected live layer
> + * @dp: DisplayPort IP core structure
> + *
> + * Return: The first connected live display layer or NULL if none of the live
> + * layer is connected.

"layers"

Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

Tomi


> + */
> +static struct zynqmp_disp_layer *
> +zynqmp_dp_disp_connected_live_layer(struct zynqmp_dp *dp)
> +{
> + if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
> + return dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_VID];
> + else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
> + return dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX];
> + else
> + return NULL;
> +}
> +
> static void zynqmp_dp_disp_enable(struct zynqmp_dp *dp,
> struct drm_bridge_state *old_bridge_state)
> {
> - enum zynqmp_dpsub_layer_id layer_id;
> struct zynqmp_disp_layer *layer;
> const struct drm_format_info *info;
>
> - if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
> - layer_id = ZYNQMP_DPSUB_LAYER_VID;
> - else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
> - layer_id = ZYNQMP_DPSUB_LAYER_GFX;
> - else
> + layer = zynqmp_dp_disp_connected_live_layer(dp);
> + if (!layer)
> return;
>
> - layer = dp->dpsub->layers[layer_id];
> -
> /* TODO: Make the format configurable. */
> info = drm_format_info(DRM_FORMAT_YUV422);
> zynqmp_disp_layer_set_format(layer, info);
> zynqmp_disp_layer_enable(layer);
>
> - if (layer_id == ZYNQMP_DPSUB_LAYER_GFX)
> + if (layer == dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX])
> zynqmp_disp_blend_set_global_alpha(dp->dpsub->disp, true, 255);
> else
> zynqmp_disp_blend_set_global_alpha(dp->dpsub->disp, false, 0);
> @@ -1310,11 +1322,8 @@ static void zynqmp_dp_disp_disable(struct zynqmp_dp *dp,
> {
> struct zynqmp_disp_layer *layer;
>
> - if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_VIDEO))
> - layer = dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_VID];
> - else if (dp->dpsub->connected_ports & BIT(ZYNQMP_DPSUB_PORT_LIVE_GFX))
> - layer = dp->dpsub->layers[ZYNQMP_DPSUB_LAYER_GFX];
> - else
> + layer = zynqmp_dp_disp_connected_live_layer(dp);
> + if (!layer)
> return;
>
> zynqmp_disp_disable(dp->dpsub->disp);
>


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