diff options
| author | Archit Taneja <architt@codeaurora.org> | 2015-11-18 11:45:50 (GMT) |
|---|---|---|
| committer | Rob Clark <robdclark@gmail.com> | 2015-12-14 15:39:36 (GMT) |
| commit | a6bf7f63828bf10c1da4da0b339b3c1df7c0d1f1 (patch) | |
| tree | 240d8f47ee695be83735a790f2109a4126f4aceb /drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c | |
| parent | ec141af624bbd3932aab90b85e1fabe7fa1ca70b (diff) | |
| download | linux-a6bf7f63828bf10c1da4da0b339b3c1df7c0d1f1.tar.xz | |
drm/msm/mdp4: Initialize LCDC encoder even if panel driver isn't available
Currently, the driver defers if it doesn't find a drm_panel. This forces
us to have a drm_panel, if not, the driver isn't usable.
Make the lcdc encoder initialization independent of the availability of
the drm panel. We only check if there is a panel node specified in DT. If
it isn't, then we don't initialize the encoder at all. The panel node is
passed to the lcdc encoder and lvds connector drivers.
The connector driver takes the responsibility to retrieve the drm_panel
from the panel node, and update the status on whether the panel is
connected or not. This makes the panel usable even if the drm_panel
driver is inserted as a module later on.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Diffstat (limited to 'drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c index 9211851..e73e174 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_lvds_connector.c @@ -23,6 +23,7 @@ struct mdp4_lvds_connector { struct drm_connector base; struct drm_encoder *encoder; + struct device_node *panel_node; struct drm_panel *panel; }; #define to_mdp4_lvds_connector(x) container_of(x, struct mdp4_lvds_connector, base) @@ -33,6 +34,10 @@ static enum drm_connector_status mdp4_lvds_connector_detect( struct mdp4_lvds_connector *mdp4_lvds_connector = to_mdp4_lvds_connector(connector); + if (!mdp4_lvds_connector->panel) + mdp4_lvds_connector->panel = + of_drm_find_panel(mdp4_lvds_connector->panel_node); + return mdp4_lvds_connector->panel ? connector_status_connected : connector_status_disconnected; @@ -42,10 +47,6 @@ static void mdp4_lvds_connector_destroy(struct drm_connector *connector) { struct mdp4_lvds_connector *mdp4_lvds_connector = to_mdp4_lvds_connector(connector); - struct drm_panel *panel = mdp4_lvds_connector->panel; - - if (panel) - drm_panel_detach(panel); drm_connector_unregister(connector); drm_connector_cleanup(connector); @@ -60,9 +61,14 @@ static int mdp4_lvds_connector_get_modes(struct drm_connector *connector) struct drm_panel *panel = mdp4_lvds_connector->panel; int ret = 0; - if (panel) + if (panel) { + drm_panel_attach(panel, connector); + ret = panel->funcs->get_modes(panel); + drm_panel_detach(panel); + } + return ret; } @@ -111,7 +117,7 @@ static const struct drm_connector_helper_funcs mdp4_lvds_connector_helper_funcs /* initialize connector */ struct drm_connector *mdp4_lvds_connector_init(struct drm_device *dev, - struct drm_panel *panel, struct drm_encoder *encoder) + struct device_node *panel_node, struct drm_encoder *encoder) { struct drm_connector *connector = NULL; struct mdp4_lvds_connector *mdp4_lvds_connector; @@ -124,7 +130,7 @@ struct drm_connector *mdp4_lvds_connector_init(struct drm_device *dev, } mdp4_lvds_connector->encoder = encoder; - mdp4_lvds_connector->panel = panel; + mdp4_lvds_connector->panel_node = panel_node; connector = &mdp4_lvds_connector->base; @@ -141,9 +147,6 @@ struct drm_connector *mdp4_lvds_connector_init(struct drm_device *dev, drm_mode_connector_attach_encoder(connector, encoder); - if (panel) - drm_panel_attach(panel, connector); - return connector; fail: |