@@ -773,6 +773,9 @@ static void sun6i_dsi_encoder_enable(struct drm_encoder *encoder)
if (dsi->panel)
drm_panel_prepare(dsi->panel);
+ if (dsi->panel_bridge)
+ dsi->panel_bridge->funcs->pre_enable(dsi->panel_bridge);
+
/*
* FIXME: This should be moved after the switch to HS mode.
*
@@ -788,6 +791,9 @@ static void sun6i_dsi_encoder_enable(struct drm_encoder *encoder)
if (dsi->panel)
drm_panel_enable(dsi->panel);
+ if (dsi->panel_bridge)
+ dsi->panel_bridge->funcs->enable(dsi->panel_bridge);
+
sun6i_dsi_start(dsi, DSI_START_HSC);
udelay(1000);
@@ -804,6 +810,9 @@ static void sun6i_dsi_encoder_disable(struct drm_encoder *encoder)
if (dsi->panel) {
drm_panel_disable(dsi->panel);
drm_panel_unprepare(dsi->panel);
+ } else if (dsi->panel_bridge) {
+ dsi->panel_bridge->funcs->disable(dsi->panel_bridge);
+ dsi->panel_bridge->funcs->post_disable(dsi->panel_bridge);
}
phy_power_off(dsi->dphy);
@@ -964,23 +973,17 @@ static int sun6i_dsi_attach(struct mipi_dsi_host *host,
struct mipi_dsi_device *device)
{
struct sun6i_dsi *dsi = host_to_sun6i_dsi(host);
- struct drm_panel *panel;
int ret;
ret = drm_of_find_panel_or_bridge(dsi->dev->of_node, 0, 0,
- &panel, NULL);
+ &dsi->panel, &dsi->panel_bridge);
if (ret)
return ret;
- if (!dsi->drm || !dsi->drm->registered)
- return -EPROBE_DEFER;
-
- dsi->panel = panel;
dsi->device = device;
- drm_kms_helper_hotplug_event(dsi->drm);
-
- dev_info(host->dev, "Attached device %s\n", device->name);
+ dev_info(host->dev, "Attached %s %s\n",
+ device->name, dsi->panel ? "panel" : "bridge");
return 0;
}
@@ -991,9 +994,10 @@ static int sun6i_dsi_detach(struct mipi_dsi_host *host,
struct sun6i_dsi *dsi = host_to_sun6i_dsi(host);
dsi->panel = NULL;
+ dsi->panel_bridge = NULL;
dsi->device = NULL;
- drm_kms_helper_hotplug_event(dsi->drm);
+ drm_of_panel_bridge_remove(dsi->dev->of_node, 0, 0);
return 0;
}
@@ -1082,7 +1086,13 @@ static int sun6i_dsi_bind(struct device *dev, struct device *master,
drm_connector_attach_encoder(&dsi->connector, &dsi->encoder);
- dsi->drm = drm;
+ if (dsi->panel_bridge) {
+ ret = drm_bridge_attach(&dsi->encoder, dsi->panel_bridge, NULL, 0);
+ if (ret) {
+ dev_err(dsi->dev, "Couldn't attach drm bridge\n");
+ goto err_cleanup_connector;
+ }
+ }
return 0;
@@ -1096,7 +1106,7 @@ static void sun6i_dsi_unbind(struct device *dev, struct device *master,
{
struct sun6i_dsi *dsi = dev_get_drvdata(dev);
- dsi->drm = NULL;
+ drm_encoder_cleanup(&dsi->encoder);
}
static const struct component_ops sun6i_dsi_ops = {
@@ -29,8 +29,8 @@ struct sun6i_dsi {
struct device *dev;
struct mipi_dsi_device *device;
- struct drm_device *drm;
struct drm_panel *panel;
+ struct drm_bridge *panel_bridge;
};
static inline struct sun6i_dsi *host_to_sun6i_dsi(struct mipi_dsi_host *host)
Some display panels would come up with a non-DSI output which can have an option to connect DSI interface by means of bridge converter. This DSI to non-DSI bridge converter would require a bridge driver that would communicate the DSI controller for bridge functionalities. So, add support for bridge functionalities in Allwinner DSI controller. Cc: Samuel Holland <samuel@sholland.org> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- Note: Samuel Holland, The existing kms hotplug dropped in order to attach the bridge properly. However, I did try several ways to support hotplug with the bridge but it's resulting in a deadlock where bind never attach bridge until bridge pointer found and bridge pointer cannot found until bind finishes. Any inputs on this would be appreciated. Changes for v3: - updated with new API's drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 34 +++++++++++++++++--------- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.h | 2 +- 2 files changed, 23 insertions(+), 13 deletions(-)