Merge tag 'drm-msm-next-2021-12-26' of ssh://gitlab.freedesktop.org/drm/msm into drm-next

* dpu plane state cleanup in prep for multirect
* dpu debugfs cleanup (and moving things to atomic_print_state) in prep
  for multirect
* dp support for sc7280
* struct_mutex removal
* include more GMU state in gpu devcore dumps
* add support for a506
* remove old eDP sub-driver (never was used in any upstream supported
  devices and modern things with eDP will use DP sub-driver instead)
* debugfs to disable hw gpu hang detect for (igt tests)
* debugfs for dumping display hw state
* and the usual assortment of cleanup and bug fixes

There still seems to be a timing issue with dpu, showing up on sc7180
devices, after the bridge probe-order change. Ie. things work great if
loglevel is high enough (or enough debug options are enabled, etc).
We'll continue to debug this in the new year.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGs+vwr0nkwgYzuYAsCoHtypWpWav+yVvLZGsEJy8tJ56A@mail.gmail.com

1 files changed, 75 insertions, 0 deletions

diff --git a/drivers/gpu/drm/msm/dp/dp_drm.c b/drivers/gpu/drm/msm/dp/dp_drm.c
index 76856c4ee1d6..d4d360d19eba 100644
--- a/drivers/gpu/drm/msm/dp/dp_drm.c
+++ b/drivers/gpu/drm/msm/dp/dp_drm.c
@@ -12,6 +12,14 @@
 #include "msm_kms.h"
 #include "dp_drm.h"
 
+
+struct msm_dp_bridge {
+	struct drm_bridge bridge;
+	struct msm_dp *dp_display;
+};
+
+#define to_dp_display(x)     container_of((x), struct msm_dp_bridge, bridge)
+
 struct dp_connector {
 	struct drm_connector base;
 	struct msm_dp *dp_display;
@@ -173,3 +181,70 @@ struct drm_connector *dp_drm_connector_init(struct msm_dp *dp_display)
 
 	return connector;
 }
+
+static void dp_bridge_mode_set(struct drm_bridge *drm_bridge,
+				const struct drm_display_mode *mode,
+				const struct drm_display_mode *adjusted_mode)
+{
+	struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+	struct msm_dp *dp_display = dp_bridge->dp_display;
+
+	msm_dp_display_mode_set(dp_display, drm_bridge->encoder, mode, adjusted_mode);
+}
+
+static void dp_bridge_enable(struct drm_bridge *drm_bridge)
+{
+	struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+	struct msm_dp *dp_display = dp_bridge->dp_display;
+
+	msm_dp_display_enable(dp_display, drm_bridge->encoder);
+}
+
+static void dp_bridge_disable(struct drm_bridge *drm_bridge)
+{
+	struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+	struct msm_dp *dp_display = dp_bridge->dp_display;
+
+	msm_dp_display_pre_disable(dp_display, drm_bridge->encoder);
+}
+
+static void dp_bridge_post_disable(struct drm_bridge *drm_bridge)
+{
+	struct msm_dp_bridge *dp_bridge = to_dp_display(drm_bridge);
+	struct msm_dp *dp_display = dp_bridge->dp_display;
+
+	msm_dp_display_disable(dp_display, drm_bridge->encoder);
+}
+
+static const struct drm_bridge_funcs dp_bridge_ops = {
+	.enable       = dp_bridge_enable,
+	.disable      = dp_bridge_disable,
+	.post_disable = dp_bridge_post_disable,
+	.mode_set     = dp_bridge_mode_set,
+};
+
+struct drm_bridge *msm_dp_bridge_init(struct msm_dp *dp_display, struct drm_device *dev,
+			struct drm_encoder *encoder)
+{
+	int rc;
+	struct msm_dp_bridge *dp_bridge;
+	struct drm_bridge *bridge;
+
+	dp_bridge = devm_kzalloc(dev->dev, sizeof(*dp_bridge), GFP_KERNEL);
+	if (!dp_bridge)
+		return ERR_PTR(-ENOMEM);
+
+	dp_bridge->dp_display = dp_display;
+
+	bridge = &dp_bridge->bridge;
+	bridge->funcs = &dp_bridge_ops;
+	bridge->encoder = encoder;
+
+	rc = drm_bridge_attach(encoder, bridge, NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
+	if (rc) {
+		DRM_ERROR("failed to attach bridge, rc=%d\n", rc);
+		return ERR_PTR(rc);
+	}
+
+	return bridge;
+}