target/linux/bcm27xx/patches-6.1/950-0025-drm-panel-Add-and-initialise-an-orientation-field-to.patch

   1 From 49d74639d19ec3ae9810a1d6ae6c0ff725c75881 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Tue, 1 Feb 2022 12:20:20 +0000
   4 Subject: [PATCH] drm/panel: Add and initialise an orientation field to
   5  drm_panel
   6
   7 Current usage of drm_connector_set_panel_orientation is from a panel's
   8 get_modes call. However if the panel orientation property doesn't
   9 exist on the connector at this point, then drm_mode_object triggers
  10 WARNs as the connector is already registered.
  11
  12 Add an orientation variable to struct drm_panel and initialise it from
  13 drm_panel_init.
  14 panel_bridge_attach can then create the property before the connector
  15 is registered.
  16
  17 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  18 ---
  19  drivers/gpu/drm/bridge/panel.c |  4 ++++
  20  drivers/gpu/drm/drm_panel.c    | 15 ++++++++++-----
  21  include/drm/drm_panel.h        |  8 ++++++++
  22  3 files changed, 22 insertions(+), 5 deletions(-)
  23
  24 --- a/drivers/gpu/drm/bridge/panel.c
  25 +++ b/drivers/gpu/drm/bridge/panel.c
  26 @@ -81,6 +81,10 @@ static int panel_bridge_attach(struct dr
  27                 return ret;
  28         }
  29
  30 +       /* set up connector's "panel orientation" property */
  31 +       drm_connector_set_panel_orientation(&panel_bridge->connector,
  32 +                                           panel_bridge->panel->orientation);
  33 +
  34         drm_connector_attach_encoder(&panel_bridge->connector,
  35                                           bridge->encoder);
  36
  37 --- a/drivers/gpu/drm/drm_panel.c
  38 +++ b/drivers/gpu/drm/drm_panel.c
  39 @@ -61,6 +61,9 @@ void drm_panel_init(struct drm_panel *pa
  40         panel->dev = dev;
  41         panel->funcs = funcs;
  42         panel->connector_type = connector_type;
  43 +
  44 +       panel->orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN;
  45 +       of_drm_get_panel_orientation(dev->of_node, &panel->orientation);
  46  }
  47  EXPORT_SYMBOL(drm_panel_init);
  48
  49 @@ -294,16 +297,18 @@ int of_drm_get_panel_orientation(const s
  50         if (ret < 0)
  51                 return ret;
  52
  53 -       if (rotation == 0)
  54 +       if (rotation == 0) {
  55                 *orientation = DRM_MODE_PANEL_ORIENTATION_NORMAL;
  56 -       else if (rotation == 90)
  57 +       } else if (rotation == 90) {
  58                 *orientation = DRM_MODE_PANEL_ORIENTATION_RIGHT_UP;
  59 -       else if (rotation == 180)
  60 +       } else if (rotation == 180) {
  61                 *orientation = DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP;
  62 -       else if (rotation == 270)
  63 +       } else if (rotation == 270) {
  64                 *orientation = DRM_MODE_PANEL_ORIENTATION_LEFT_UP;
  65 -       else
  66 +       } else {
  67 +               DRM_ERROR("%pOF: invalid orientation %d\n", np, ret);
  68                 return -EINVAL;
  69 +       }
  70
  71         return 0;
  72  }
  73 --- a/include/drm/drm_panel.h
  74 +++ b/include/drm/drm_panel.h
  75 @@ -183,6 +183,14 @@ struct drm_panel {
  76         int connector_type;
  77
  78         /**
  79 +        * @orientation:
  80 +        *
  81 +        * Panel orientation at initialisation. This is used to initialise the
  82 +        * drm_connector property for panel orientation.
  83 +        */
  84 +       enum drm_panel_orientation orientation;
  85 +
  86 +       /**
  87          * @list:
  88          *
  89          * Panel entry in registry.