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drm: convert drivers to use drm_of_find_panel_or_bridge

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Similar to the previous commit, convert drivers open coding OF graph
parsing to use drm_of_find_panel_or_bridge instead.

This changes some error messages to debug messages (in the graph core).
Graph connections are often "no connects" depending on the particular
board, so we want to avoid spurious messages. Plus the kernel is not a
DT validator.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[seanpaul dropped rockchip changes since they're now obsolete]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
This commit is contained in:
Rob Herring
2017-03-29 13:55:46 -05:00
committed by Sean Paul
parent 86418f90a4
commit ebc9446135
14 changed files with 93 additions and 394 deletions
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40
drivers/gpu/drm/mxsfb/mxsfb_out.c
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@@ -19,6 +19,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_of.h>
#include <drm/drm_panel.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_simple_kms_helper.h>
@@ -82,20 +83,15 @@ static const struct drm_connector_funcs mxsfb_panel_connector_funcs = {
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
};
static int mxsfb_attach_endpoint(struct drm_device *drm,
const struct of_endpoint *ep)
int mxsfb_create_output(struct drm_device *drm)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
struct device_node *np;
struct drm_panel *panel;
int ret = -EPROBE_DEFER;
int ret;
np = of_graph_get_remote_port_parent(ep->local_node);
panel = of_drm_find_panel(np);
of_node_put(np);
if (!panel)
return -EPROBE_DEFER;
ret = drm_of_find_panel_or_bridge(drm->dev->of_node, 0, 0, &panel, NULL);
if (ret)
return ret;
mxsfb->connector.dpms = DRM_MODE_DPMS_OFF;
mxsfb->connector.polled = 0;
@@ -109,27 +105,3 @@ static int mxsfb_attach_endpoint(struct drm_device *drm,
return ret;
}
int mxsfb_create_output(struct drm_device *drm)
{
struct mxsfb_drm_private *mxsfb = drm->dev_private;
struct device_node *ep_np = NULL;
struct of_endpoint ep;
int ret;
for_each_endpoint_of_node(drm->dev->of_node, ep_np) {
ret = of_graph_parse_endpoint(ep_np, &ep);
if (!ret)
ret = mxsfb_attach_endpoint(drm, &ep);
if (ret) {
of_node_put(ep_np);
return ret;
}
}
if (!mxsfb->panel)
return -EPROBE_DEFER;
return 0;
}