Hi,
On Wed, Dec 05, 2018 at 05:00:10PM +0200, Laurent Pinchart wrote:
> The DT bindings for the OMAP DSS allow assigning numerical IDs to
> display outputs through display entries in the alias node. The driver
> uses this information to sort pipelines according to the order specified
> in DT, making it possible for a system to give a priority order to
> outputs.
>
> Retrieval of the alias ID is done when initializing display dss devices.
> That code will be removed when moving to drm_bridge and drm_panel. Move
> retrieval of the alias ID to display pipeline connection time and store
> it in the pipeline structure instead to keep the feature.
>
> Signed-off-by: Laurent Pinchart
> ---
Reviewed-by: Sebastian Reichel
-- Sebastian
> drivers/gpu/drm/omapdrm/dss/display.c | 2 --
> drivers/gpu/drm/omapdrm/dss/omapdss.h | 2 --
> drivers/gpu/drm/omapdrm/omap_drv.c| 9 +++--
> drivers/gpu/drm/omapdrm/omap_drv.h| 1 +
> 4 files changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/display.c
> b/drivers/gpu/drm/omapdrm/dss/display.c
> index 398964358386..e93f61a567a8 100644
> --- a/drivers/gpu/drm/omapdrm/dss/display.c
> +++ b/drivers/gpu/drm/omapdrm/dss/display.c
> @@ -42,8 +42,6 @@ void omapdss_display_init(struct omap_dss_device *dssdev)
> if (id < 0)
> id = disp_num_counter++;
>
> - dssdev->alias_id = id;
> -
> /* Use 'label' property for name, if it exists */
> of_property_read_string(dssdev->dev->of_node, "label", >name);
>
> diff --git a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> index 5dac69519d7e..7c9f8a5ceb37 100644
> --- a/drivers/gpu/drm/omapdrm/dss/omapdss.h
> +++ b/drivers/gpu/drm/omapdrm/dss/omapdss.h
> @@ -419,8 +419,6 @@ struct omap_dss_device {
>
> struct list_head list;
>
> - unsigned int alias_id;
> -
> enum omap_display_type type;
> /*
>* DSS output type that this device generates (for DSS internal devices)
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c
> b/drivers/gpu/drm/omapdrm/omap_drv.c
> index 286590657d44..c9b578a49b24 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.c
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.c
> @@ -155,9 +155,9 @@ static int omap_compare_pipes(const void *a, const void
> *b)
> const struct omap_drm_pipeline *pipe1 = a;
> const struct omap_drm_pipeline *pipe2 = b;
>
> - if (pipe1->display->alias_id > pipe2->display->alias_id)
> + if (pipe1->alias_id > pipe2->alias_id)
> return 1;
> - else if (pipe1->display->alias_id < pipe2->display->alias_id)
> + else if (pipe1->alias_id < pipe2->alias_id)
> return -1;
> return 0;
> }
> @@ -182,11 +182,16 @@ static int omap_connect_pipelines(struct drm_device
> *ddev)
>output->name);
> } else {
> struct omap_drm_pipeline *pipe;
> + int id;
>
> pipe = >pipes[priv->num_pipes++];
> pipe->output = omapdss_device_get(output);
> pipe->display = omapdss_display_get(output);
>
> + id = of_alias_get_id(pipe->display->dev->of_node,
> + "display");
> + pipe->alias_id = id >= 0 ? id : priv->num_pipes - 1;
> +
> if (priv->num_pipes == ARRAY_SIZE(priv->pipes)) {
> /* To balance the 'for_each_dss_output' loop */
> omapdss_device_put(output);
> diff --git a/drivers/gpu/drm/omapdrm/omap_drv.h
> b/drivers/gpu/drm/omapdrm/omap_drv.h
> index 788aa9f7e6df..a169de3ed95d 100644
> --- a/drivers/gpu/drm/omapdrm/omap_drv.h
> +++ b/drivers/gpu/drm/omapdrm/omap_drv.h
> @@ -51,6 +51,7 @@ struct omap_drm_pipeline {
> struct drm_connector *connector;
> struct omap_dss_device *output;
> struct omap_dss_device *display;
> + unsigned int alias_id;
> };
>
> struct omap_drm_private {
> --
> Regards,
>
> Laurent Pinchart
>
> ___
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> dri-devel@lists.freedesktop.org
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