Merge tag 'drm-misc-next-2024-05-30' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

drm-misc-next for 6.11:

UAPI Changes:
  - Deprecate DRM date and return a 0 date in DRM_IOCTL_VERSION

Core Changes:
  - connector: Create a set of helpers to help with HDMI support
  - fbdev: Create memory manager optimized fbdev emulation
  - panic: Allow to select fonts, improve drm_fb_dma_get_scanout_buffer

Driver Changes:
  - Remove driver owner assignments
  - Allow more drivers to compile with COMPILE_TEST
  - Conversions to drm_edid
  - ivpu: hardware scheduler support, profiling support, improvements
    to the platform support layer
  - mgag200: general reworks and improvements
  - nouveau: Add NVreg_RegistryDwords command line option
  - rockchip: Conversion to the hdmi helpers
  - sun4i: Conversion to the hdmi helpers
  - vc4: Conversion to the hdmi helpers
  - v3d: Perf counters improvements
  - zynqmp: IRQ and debugfs improvements
  - bridge:
    - Remove redundant checks on bridge->encoder
  - panels:
    - Switch panels from register table initialization to proper code
    - Now that the panel code tracks the panel state, remove every
      ad-hoc implementation in the panel drivers
    - New panels: Lincoln Tech Sol LCD185-101CT, Microtips Technology
      13-101HIEBCAF0-C, Microtips Technology MF-103HIEB0GA0, BOE
      nv110wum-l60, IVO t109nw41

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240530-hilarious-flat-magpie-5fa186@houat

4 files changed, 44 insertions, 18 deletions

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index 2c661f28410e..2ad33559a33a 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -5,6 +5,7 @@
  *
  */
 #include <linux/clk.h>
+#include <linux/of.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
 
@@ -294,7 +295,6 @@ komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
 	struct komeda_dev *mdev = kcrtc->master->mdev;
 	struct completion *flip_done;
 	struct completion temp;
-	int timeout;
 
 	/* if caller doesn't send a flip_done, use a private flip_done */
 	if (input_flip_done) {
@@ -308,8 +308,7 @@ komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
 	mdev->funcs->flush(mdev, kcrtc->master->id, 0);
 
 	/* wait the flip take affect.*/
-	timeout = wait_for_completion_timeout(flip_done, HZ);
-	if (timeout == 0) {
+	if (wait_for_completion_timeout(flip_done, HZ) == 0) {
 		DRM_ERROR("wait pipe%d flip done timeout\n", kcrtc->master->id);
 		if (!input_flip_done) {
 			unsigned long flags;
@@ -610,12 +609,34 @@ get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
 	return NULL;
 }
 
+static int komeda_attach_bridge(struct device *dev,
+				struct komeda_pipeline *pipe,
+				struct drm_encoder *encoder)
+{
+	struct drm_bridge *bridge;
+	int err;
+
+	bridge = devm_drm_of_get_bridge(dev, pipe->of_node,
+					KOMEDA_OF_PORT_OUTPUT, 0);
+	if (IS_ERR(bridge))
+		return dev_err_probe(dev, PTR_ERR(bridge), "remote bridge not found for pipe: %s\n",
+				     of_node_full_name(pipe->of_node));
+
+	err = drm_bridge_attach(encoder, bridge, NULL, 0);
+	if (err)
+		dev_err(dev, "bridge_attach() failed for pipe: %s\n",
+			of_node_full_name(pipe->of_node));
+
+	return err;
+}
+
 static int komeda_crtc_add(struct komeda_kms_dev *kms,
 			   struct komeda_crtc *kcrtc)
 {
 	struct drm_crtc *crtc = &kcrtc->base;
 	struct drm_device *base = &kms->base;
-	struct drm_bridge *bridge;
+	struct komeda_pipeline *pipe = kcrtc->master;
+	struct drm_encoder *encoder = &kcrtc->encoder;
 	int err;
 
 	err = drm_crtc_init_with_planes(base, crtc,
@@ -626,27 +647,27 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms,
 
 	drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs);
 
-	crtc->port = kcrtc->master->of_output_port;
+	crtc->port = pipe->of_output_port;
 
 	/* Construct an encoder for each pipeline and attach it to the remote
 	 * bridge
 	 */
 	kcrtc->encoder.possible_crtcs = drm_crtc_mask(crtc);
-	err = drm_simple_encoder_init(base, &kcrtc->encoder,
-				      DRM_MODE_ENCODER_TMDS);
+	err = drm_simple_encoder_init(base, encoder, DRM_MODE_ENCODER_TMDS);
 	if (err)
 		return err;
 
-	bridge = devm_drm_of_get_bridge(base->dev, kcrtc->master->of_node,
-					KOMEDA_OF_PORT_OUTPUT, 0);
-	if (IS_ERR(bridge))
-		return PTR_ERR(bridge);
-
-	err = drm_bridge_attach(&kcrtc->encoder, bridge, NULL, 0);
+	if (pipe->of_output_links[0]) {
+		err = komeda_attach_bridge(base->dev, pipe, encoder);
+		if (err)
+			return err;
+	}
 
 	drm_crtc_enable_color_mgmt(crtc, 0, true, KOMEDA_COLOR_LUT_SIZE);
 
-	return err;
+	komeda_pipeline_dump(pipe);
+
+	return 0;
 }
 
 int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
index cc57ea4e13ae..55c3773befde 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c
@@ -9,7 +9,7 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_fbdev_dma.h>
 #include <drm/drm_module.h>
 #include <drm/drm_of.h>
 #include "komeda_dev.h"
@@ -59,6 +59,10 @@ static int komeda_platform_probe(struct platform_device *pdev)
 	struct komeda_drv *mdrv;
 	int err;
 
+	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
+	if (err)
+		return dev_err_probe(dev, err, "DMA mask error\n");
+
 	mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL);
 	if (!mdrv)
 		return -ENOMEM;
@@ -80,7 +84,7 @@ static int komeda_platform_probe(struct platform_device *pdev)
 	}
 
 	dev_set_drvdata(dev, mdrv);
-	drm_fbdev_generic_setup(&mdrv->kms->base, 32);
+	drm_fbdev_dma_setup(&mdrv->kms->base, 32);
 
 	return 0;
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
index a4048724564d..83e61c4080c2 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h
@@ -191,5 +191,6 @@ void komeda_crtc_flush_and_wait_for_flip_done(struct komeda_crtc *kcrtc,
 struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
 void komeda_kms_detach(struct komeda_kms_dev *kms);
 void komeda_kms_shutdown(struct komeda_kms_dev *kms);
+void komeda_pipeline_dump(struct komeda_pipeline *pipe);
 
 #endif /*_KOMEDA_KMS_H_*/
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
index 00f5864a0495..81e244f0c0ca 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.c
@@ -10,6 +10,7 @@
 #include <drm/drm_print.h>
 
 #include "komeda_dev.h"
+#include "komeda_kms.h"
 #include "komeda_pipeline.h"
 
 /** komeda_pipeline_add - Add a pipeline to &komeda_dev */
@@ -247,7 +248,7 @@ static void komeda_component_dump(struct komeda_component *c)
 		  c->max_active_outputs, c->supported_outputs);
 }
 
-static void komeda_pipeline_dump(struct komeda_pipeline *pipe)
+void komeda_pipeline_dump(struct komeda_pipeline *pipe)
 {
 	struct komeda_component *c;
 	int id;
@@ -351,7 +352,6 @@ int komeda_assemble_pipelines(struct komeda_dev *mdev)
 		pipe = mdev->pipelines[i];
 
 		komeda_pipeline_assemble(pipe);
-		komeda_pipeline_dump(pipe);
 	}
 
 	return 0;