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drm/bridge: tc358768: don't create a panel_bridge

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Now a panel_bridge is automatically created for every drm_panel and the
panel-bridge API is just a deprecated wrapper to access it.

Update and simplify the code by just getting a reference to the
already-existing bridge using of_drm_get_bridge_by_endpoint().

As of_drm_get_bridge_by_endpoint() returns a refcounted bridge, take care
of putting the bridge reference when not used anymore.

Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260916-drm-bridge-every-panel-v3-15-83afb4f1a707@bootlin.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
This commit is contained in:
Luca Ceresoli 2026-09-16 15:45:39 +02:00
parent f763a25c44
commit 643e89ea52
2 changed files with 6 additions and 21 deletions
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2
drivers/gpu/drm/bridge/Kconfig
View File

@ -408,8 +408,6 @@ config DRM_TOSHIBA_TC358768
depends on OF
select DRM_KMS_HELPER
select REGMAP_I2C
select DRM_PANEL
select DRM_PANEL_BRIDGE
select DRM_MIPI_DSI
select VIDEOMODE_HELPERS
help

25
drivers/gpu/drm/bridge/tc358768.c
View File

@ -22,7 +22,6 @@
#include <drm/drm_drv.h>
#include <drm/drm_mipi_dsi.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <video/mipi_display.h>
#include <video/videomode.h>
@ -137,7 +136,6 @@ static const char * const tc358768_supplies[] = {
struct tc358768_dsi_output {
struct mipi_dsi_device *dev;
struct drm_panel *panel;
struct drm_bridge *bridge;
};
@ -443,7 +441,6 @@ static int tc358768_dsi_host_attach(struct mipi_dsi_host *host,
{
struct tc358768_priv *priv = dsi_host_to_tc358768(host);
struct drm_bridge *bridge;
struct drm_panel *panel;
struct device_node *ep;
int ret;
@ -471,24 +468,15 @@ static int tc358768_dsi_host_attach(struct mipi_dsi_host *host,
return -ENOTSUPP;
}
ret = drm_of_find_panel_or_bridge(host->dev->of_node, 1, 0, &panel,
&bridge);
if (ret)
return ret;
bridge = of_drm_get_bridge_by_endpoint(host->dev->of_node, 1, 0);
if (IS_ERR(bridge))
return PTR_ERR(bridge);
if (panel) {
bridge = drm_panel_bridge_add_typed(panel,
DRM_MODE_CONNECTOR_DSI);
drm_panel_put(panel);
if (IS_ERR(bridge))
return PTR_ERR(bridge);
bridge->pre_enable_prev_first = true;
}
bridge->type = DRM_MODE_CONNECTOR_DSI;
bridge->pre_enable_prev_first = true;
priv->output.dev = dev;
priv->output.bridge = bridge;
priv->output.panel = panel;
priv->dsi_lanes = dev->lanes;
priv->dsi_bpp = mipi_dsi_pixel_format_to_bpp(dev->format);
@ -518,8 +506,7 @@ static int tc358768_dsi_host_detach(struct mipi_dsi_host *host,
struct tc358768_priv *priv = dsi_host_to_tc358768(host);
drm_bridge_remove(&priv->bridge);
if (priv->output.panel)
drm_panel_bridge_remove(priv->output.bridge);
drm_bridge_put(priv->output.bridge);
return 0;
}