[PATCH 29/60] drm/omap: Use the drm_panel_bridge API
Laurent Pinchart
laurent.pinchart at ideasonboard.com
Sun Jul 7 18:19:06 UTC 2019
Replace the manual panel handling code by a drm_panel_bridge. This
simplifies the driver and allows all components in the display pipeline
to be treated as bridges, paving the way to generic connector handling.
Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
---
drivers/gpu/drm/omapdrm/dss/base.c | 12 ++++-----
drivers/gpu/drm/omapdrm/dss/output.c | 33 +++++++++++++++++++++---
drivers/gpu/drm/omapdrm/omap_connector.c | 9 -------
drivers/gpu/drm/omapdrm/omap_drv.c | 13 ----------
drivers/gpu/drm/omapdrm/omap_encoder.c | 13 ----------
5 files changed, 34 insertions(+), 46 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/dss/base.c b/drivers/gpu/drm/omapdrm/dss/base.c
index cae5687822e2..80d48936d177 100644
--- a/drivers/gpu/drm/omapdrm/dss/base.c
+++ b/drivers/gpu/drm/omapdrm/dss/base.c
@@ -149,8 +149,7 @@ struct omap_dss_device *omapdss_device_next_output(struct omap_dss_device *from)
goto done;
}
- if (dssdev->id &&
- (dssdev->next || dssdev->bridge || dssdev->panel))
+ if (dssdev->id && (dssdev->next || dssdev->bridge))
goto done;
}
@@ -185,11 +184,10 @@ int omapdss_device_connect(struct dss_device *dss,
if (!dst) {
/*
* The destination is NULL when the source is connected to a
- * bridge or panel instead of a DSS device. Stop here, we will
- * attach the bridge or panel later when we will have a DRM
- * encoder.
+ * bridge instead of a DSS device. Stop here, we will attach
+ * the bridge later when we will have a DRM encoder.
*/
- return src && (src->bridge || src->panel) ? 0 : -EINVAL;
+ return src && src->bridge ? 0 : -EINVAL;
}
if (omapdss_device_is_connected(dst))
@@ -217,7 +215,7 @@ void omapdss_device_disconnect(struct omap_dss_device *src,
dst ? dev_name(dst->dev) : "NULL");
if (!dst) {
- WARN_ON(!src->bridge && !src->panel);
+ WARN_ON(!src->bridge);
return;
}
diff --git a/drivers/gpu/drm/omapdrm/dss/output.c b/drivers/gpu/drm/omapdrm/dss/output.c
index 10a9ee5cdc61..4f71a20bc7c7 100644
--- a/drivers/gpu/drm/omapdrm/dss/output.c
+++ b/drivers/gpu/drm/omapdrm/dss/output.c
@@ -30,6 +30,7 @@
int omapdss_device_init_output(struct omap_dss_device *out)
{
struct device_node *remote_node;
+ int ret;
remote_node = of_graph_get_remote_node(out->dev->of_node, 0, 0);
if (!remote_node) {
@@ -47,17 +48,41 @@ int omapdss_device_init_output(struct omap_dss_device *out)
if (out->next && out->type != out->next->type) {
dev_err(out->dev, "output type and display type don't match\n");
- omapdss_device_put(out->next);
- out->next = NULL;
- return -EINVAL;
+ ret = -EINVAL;
+ goto error;
}
- return out->next || out->bridge || out->panel ? 0 : -EPROBE_DEFER;
+ if (out->panel) {
+ unsigned int connector_type;
+ struct drm_bridge *bridge;
+
+ connector_type = omapdss_device_connector_type(out->type);
+ bridge = drm_panel_bridge_add(out->panel, connector_type);
+ if (IS_ERR(bridge)) {
+ dev_err(out->dev,
+ "unable to create panel bridge (%ld)\n",
+ PTR_ERR(bridge));
+ ret = PTR_ERR(bridge);
+ goto error;
+ }
+
+ out->bridge = bridge;
+ }
+
+ return out->next || out->bridge ? 0 : -EPROBE_DEFER;
+
+error:
+ omapdss_device_put(out->next);
+ out->next = NULL;
+ return ret;
}
EXPORT_SYMBOL(omapdss_device_init_output);
void omapdss_device_cleanup_output(struct omap_dss_device *out)
{
+ if (out->bridge && out->panel)
+ drm_panel_bridge_remove(out->bridge);
+
if (out->next)
omapdss_device_put(out->next);
}
diff --git a/drivers/gpu/drm/omapdrm/omap_connector.c b/drivers/gpu/drm/omapdrm/omap_connector.c
index 322158ef15f6..3d1f740037c8 100644
--- a/drivers/gpu/drm/omapdrm/omap_connector.c
+++ b/drivers/gpu/drm/omapdrm/omap_connector.c
@@ -17,7 +17,6 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
-#include <drm/drm_panel.h>
#include <drm/drm_probe_helper.h>
#include "omap_drv.h"
@@ -201,7 +200,6 @@ static int omap_connector_get_modes_edid(struct drm_connector *connector,
static int omap_connector_get_modes(struct drm_connector *connector)
{
- struct omap_connector *omap_connector = to_omap_connector(connector);
struct omap_dss_device *dssdev;
DBG("%s", connector->name);
@@ -224,13 +222,6 @@ static int omap_connector_get_modes(struct drm_connector *connector)
if (dssdev)
return dssdev->ops->get_modes(dssdev, connector);
- /*
- * Otherwise if the display pipeline uses a drm_panel, we delegate the
- * operation to the panel API.
- */
- if (omap_connector->output->panel)
- return drm_panel_get_modes(omap_connector->output->panel);
-
/*
* We can't retrieve modes, which can happen for instance for a DVI or
* VGA output with the DDC bus unconnected. The KMS core will add the
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index 97512d4cf664..b615ecef7719 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -23,7 +23,6 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_probe_helper.h>
-#include <drm/drm_panel.h>
#include "omap_dmm_tiler.h"
#include "omap_drv.h"
@@ -138,9 +137,6 @@ static void omap_disconnect_pipelines(struct drm_device *ddev)
for (i = 0; i < priv->num_pipes; i++) {
struct omap_drm_pipeline *pipe = &priv->pipes[i];
- if (pipe->output->panel)
- drm_panel_detach(pipe->output->panel);
-
omapdss_device_disconnect(NULL, pipe->output);
omapdss_device_put(pipe->output);
@@ -225,8 +221,6 @@ static int omap_display_id(struct omap_dss_device *output)
bridge = bridge->next;
node = bridge->of_node;
- } else if (output->panel) {
- node = output->panel->dev->of_node;
}
return node ? of_alias_get_id(node, "display") : -ENODEV;
@@ -342,13 +336,6 @@ static int omap_modeset_init(struct drm_device *dev)
return -ENOMEM;
drm_connector_attach_encoder(pipe->connector, encoder);
-
- if (pipe->output->panel) {
- ret = drm_panel_attach(pipe->output->panel,
- pipe->connector);
- if (ret < 0)
- return ret;
- }
}
crtc = omap_crtc_init(dev, pipe, priv->planes[i]);
diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c
index 8cae2af1438f..510888413068 100644
--- a/drivers/gpu/drm/omapdrm/omap_encoder.c
+++ b/drivers/gpu/drm/omapdrm/omap_encoder.c
@@ -20,7 +20,6 @@
#include <drm/drm_crtc.h>
#include <drm/drm_modeset_helper_vtables.h>
#include <drm/drm_edid.h>
-#include <drm/drm_panel.h>
#include "omap_drv.h"
@@ -166,12 +165,6 @@ static void omap_encoder_disable(struct drm_encoder *encoder)
dev_dbg(dev->dev, "disable(%s)\n", dssdev->name);
- /* Disable the panel if present. */
- if (dssdev->panel) {
- drm_panel_disable(dssdev->panel);
- drm_panel_unprepare(dssdev->panel);
- }
-
/*
* Disable the chain of external devices, starting at the one at the
* internal encoder's output.
@@ -221,12 +214,6 @@ static void omap_encoder_enable(struct drm_encoder *encoder)
* internal encoder's output.
*/
omapdss_device_enable(dssdev->next);
-
- /* Enable the panel if present. */
- if (dssdev->panel) {
- drm_panel_prepare(dssdev->panel);
- drm_panel_enable(dssdev->panel);
- }
}
static int omap_encoder_atomic_check(struct drm_encoder *encoder,
--
Regards,
Laurent Pinchart
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