#include <drm/drmP.h>
#include <drm/drm_of.h>
+#include <drm/drm_bridge.h>
#include "atmel_hlcdc_dc.h"
-/**
- * Atmel HLCDC RGB connector structure
- *
- * This structure stores RGB slave device information.
- *
- * @connector: DRM connector
- * @encoder: DRM encoder
- * @dc: pointer to the atmel_hlcdc_dc structure
- * @panel: panel connected on the RGB output
- */
-struct atmel_hlcdc_rgb_output {
- struct drm_connector connector;
- struct drm_encoder encoder;
- struct atmel_hlcdc_dc *dc;
- struct drm_panel *panel;
-};
-
-static inline struct atmel_hlcdc_rgb_output *
-drm_connector_to_atmel_hlcdc_rgb_output(struct drm_connector *connector)
-{
- return container_of(connector, struct atmel_hlcdc_rgb_output,
- connector);
-}
-
-static inline struct atmel_hlcdc_rgb_output *
-drm_encoder_to_atmel_hlcdc_rgb_output(struct drm_encoder *encoder)
-{
- return container_of(encoder, struct atmel_hlcdc_rgb_output, encoder);
-}
-
-static void atmel_hlcdc_rgb_encoder_enable(struct drm_encoder *encoder)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_encoder_to_atmel_hlcdc_rgb_output(encoder);
-
- if (rgb->panel) {
- drm_panel_prepare(rgb->panel);
- drm_panel_enable(rgb->panel);
- }
-}
-
-static void atmel_hlcdc_rgb_encoder_disable(struct drm_encoder *encoder)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_encoder_to_atmel_hlcdc_rgb_output(encoder);
-
- if (rgb->panel) {
- drm_panel_disable(rgb->panel);
- drm_panel_unprepare(rgb->panel);
- }
-}
-
-static const struct drm_encoder_helper_funcs atmel_hlcdc_panel_encoder_helper_funcs = {
- .disable = atmel_hlcdc_rgb_encoder_disable,
- .enable = atmel_hlcdc_rgb_encoder_enable,
-};
-
-static void atmel_hlcdc_rgb_encoder_destroy(struct drm_encoder *encoder)
-{
- drm_encoder_cleanup(encoder);
- memset(encoder, 0, sizeof(*encoder));
-}
-
static const struct drm_encoder_funcs atmel_hlcdc_panel_encoder_funcs = {
- .destroy = atmel_hlcdc_rgb_encoder_destroy,
-};
-
-static int atmel_hlcdc_panel_get_modes(struct drm_connector *connector)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_connector_to_atmel_hlcdc_rgb_output(connector);
-
- if (rgb->panel)
- return rgb->panel->funcs->get_modes(rgb->panel);
-
- return 0;
-}
-
-static int atmel_hlcdc_rgb_mode_valid(struct drm_connector *connector,
- struct drm_display_mode *mode)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_connector_to_atmel_hlcdc_rgb_output(connector);
-
- return atmel_hlcdc_dc_mode_valid(rgb->dc, mode);
-}
-
-static const struct drm_connector_helper_funcs atmel_hlcdc_panel_connector_helper_funcs = {
- .get_modes = atmel_hlcdc_panel_get_modes,
- .mode_valid = atmel_hlcdc_rgb_mode_valid,
+ .destroy = drm_encoder_cleanup,
};
-static enum drm_connector_status
-atmel_hlcdc_panel_connector_detect(struct drm_connector *connector, bool force)
+static int atmel_hlcdc_attach_endpoint(struct drm_device *dev, int endpoint)
{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_connector_to_atmel_hlcdc_rgb_output(connector);
-
- if (rgb->panel)
- return connector_status_connected;
-
- return connector_status_disconnected;
-}
-
-static void
-atmel_hlcdc_panel_connector_destroy(struct drm_connector *connector)
-{
- struct atmel_hlcdc_rgb_output *rgb =
- drm_connector_to_atmel_hlcdc_rgb_output(connector);
-
- if (rgb->panel)
- drm_panel_detach(rgb->panel);
-
- drm_connector_cleanup(connector);
-}
-
-static const struct drm_connector_funcs atmel_hlcdc_panel_connector_funcs = {
- .dpms = drm_atomic_helper_connector_dpms,
- .detect = atmel_hlcdc_panel_connector_detect,
- .fill_modes = drm_helper_probe_single_connector_modes,
- .destroy = atmel_hlcdc_panel_connector_destroy,
- .reset = drm_atomic_helper_connector_reset,
- .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
- .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
-};
-
-static int atmel_hlcdc_attach_endpoint(struct drm_device *dev,
- const struct device_node *np)
-{
- struct atmel_hlcdc_dc *dc = dev->dev_private;
- struct atmel_hlcdc_rgb_output *output;
+ struct drm_encoder *encoder;
struct drm_panel *panel;
struct drm_bridge *bridge;
int ret;
- output = devm_kzalloc(dev->dev, sizeof(*output), GFP_KERNEL);
- if (!output)
- return -EINVAL;
+ ret = drm_of_find_panel_or_bridge(dev->dev->of_node, 0, endpoint,
+ &panel, &bridge);
+ if (ret)
+ return ret;
- output->dc = dc;
+ encoder = devm_kzalloc(dev->dev, sizeof(*encoder), GFP_KERNEL);
+ if (!encoder)
+ return -EINVAL;
- drm_encoder_helper_add(&output->encoder,
- &atmel_hlcdc_panel_encoder_helper_funcs);
- ret = drm_encoder_init(dev, &output->encoder,
+ ret = drm_encoder_init(dev, encoder,
&atmel_hlcdc_panel_encoder_funcs,
DRM_MODE_ENCODER_NONE, NULL);
if (ret)
return ret;
- output->encoder.possible_crtcs = 0x1;
-
- ret = drm_of_find_panel_or_bridge(np, 0, 0, &panel, &bridge);
- if (ret)
- return ret;
+ encoder->possible_crtcs = 0x1;
if (panel) {
- output->connector.dpms = DRM_MODE_DPMS_OFF;
- output->connector.polled = DRM_CONNECTOR_POLL_CONNECT;
- drm_connector_helper_add(&output->connector,
- &atmel_hlcdc_panel_connector_helper_funcs);
- ret = drm_connector_init(dev, &output->connector,
- &atmel_hlcdc_panel_connector_funcs,
- DRM_MODE_CONNECTOR_Unknown);
- if (ret)
- goto err_encoder_cleanup;
-
- drm_mode_connector_attach_encoder(&output->connector,
- &output->encoder);
-
- ret = drm_panel_attach(panel, &output->connector);
- if (ret) {
- drm_connector_cleanup(&output->connector);
- goto err_encoder_cleanup;
- }
-
- output->panel = panel;
-
- return 0;
+ bridge = drm_panel_bridge_add(panel, DRM_MODE_CONNECTOR_Unknown);
+ if (IS_ERR(bridge))
+ return PTR_ERR(bridge);
}
if (bridge) {
- ret = drm_bridge_attach(&output->encoder, bridge, NULL);
+ ret = drm_bridge_attach(encoder, bridge, NULL);
if (!ret)
return 0;
+
+ if (panel)
+ drm_panel_bridge_remove(bridge);
}
-err_encoder_cleanup:
- drm_encoder_cleanup(&output->encoder);
+ drm_encoder_cleanup(encoder);
return ret;
}
int atmel_hlcdc_create_outputs(struct drm_device *dev)
{
- struct device_node *remote;
- int ret = -ENODEV;
- int endpoint = 0;
-
- while (true) {
- /* Loop thru possible multiple connections to the output */
- remote = of_graph_get_remote_node(dev->dev->of_node, 0,
- endpoint++);
- if (!remote)
- break;
-
- ret = atmel_hlcdc_attach_endpoint(dev, remote);
- of_node_put(remote);
- if (ret)
- return ret;
- }
+ int endpoint, ret = 0;
+
+ for (endpoint = 0; !ret; endpoint++)
+ ret = atmel_hlcdc_attach_endpoint(dev, endpoint);
+
+ /* At least one device was successfully attached.*/
+ if (ret == -ENODEV && endpoint)
+ return 0;
return ret;
}
projects / karo-tx-linux.git / blobdiff