Merge tag 'drm-misc-next-2021-11-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.17:

UAPI Changes:

Cross-subsystem Changes:

 * Move 'nomodeset' kernel boot option into DRM subsystem

Core Changes:

 * Replace several DRM_*() logging macros with drm_*() equivalents
 * panel: Add quirk for Lenovo Yoga Book X91F/L
 * ttm: Documentation fixes

Driver Changes:

 * Cleanup nomodeset handling in drivers
 * Fixes
 * bridge/anx7625: Fix reading EDID; Fix error code
 * bridge/megachips: Probe both bridges before registering
 * vboxvideo: Fix ERR_PTR usage

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YaSVz15Q7dAlEevU@linux-uq9g.fritz.box

Author: danvet

Documentation/admin-guide/kernel-parameters.txt

@@ -3545,6 +3545,13 @@
 			shutdown the other cpus.  Instead use the REBOOT_VECTOR
 			irq.
 
+	nomodeset	Disable kernel modesetting. DRM drivers will not perform
+			display-mode changes or accelerated rendering. Only the
+			system framebuffer will be available for use if this was
+			set-up by the firmware or boot loader.
+
+			Useful as fallback, or for testing and debugging.
+
 	nomodule	Disable module load
 
 	nopat		[X86] Disable PAT (page attribute table extension of

drivers/gpu/drm/Kconfig

@@ -8,6 +8,7 @@
 menuconfig DRM
 	tristate "Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)"
 	depends on (AGP || AGP=n) && !EMULATED_CMPXCHG && HAS_DMA
+	select DRM_NOMODESET
 	select DRM_PANEL_ORIENTATION_QUIRKS
 	select HDMI
 	select FB_CMDLINE
@@ -492,6 +493,11 @@ config DRM_EXPORT_FOR_TESTS
 config DRM_PANEL_ORIENTATION_QUIRKS
 	tristate
 
+# Separate option because nomodeset parameter is global and expected built-in
+config DRM_NOMODESET
+	bool
+	default n
+
 config DRM_LIB_RANDOM
 	bool
 	default n

drivers/gpu/drm/Makefile

@@ -33,6 +33,8 @@ drm-$(CONFIG_DRM_PRIVACY_SCREEN) += drm_privacy_screen.o drm_privacy_screen_x86.
 
 obj-$(CONFIG_DRM_DP_AUX_BUS) += drm_dp_aux_bus.o
 
+obj-$(CONFIG_DRM_NOMODESET) += drm_nomodeset.o
+
 drm_cma_helper-y := drm_gem_cma_helper.o
 obj-$(CONFIG_DRM_GEM_CMA_HELPER) += drm_cma_helper.o
 

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -31,7 +31,6 @@
 #include "amdgpu_drv.h"
 
 #include <drm/drm_pciids.h>
-#include <linux/console.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
 #include <linux/vga_switcheroo.h>
@@ -2516,10 +2515,8 @@ static int __init amdgpu_init(void)
 {
 	int r;
 
-	if (vgacon_text_force()) {
-		DRM_ERROR("VGACON disables amdgpu kernel modesetting.\n");
+	if (drm_firmware_drivers_only())
 		return -EINVAL;
-	}
 
 	r = amdgpu_sync_init();
 	if (r)

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c

@@ -116,17 +116,8 @@ static void amdgpu_evict_flags(struct ttm_buffer_object *bo,
 
 	abo = ttm_to_amdgpu_bo(bo);
 	if (abo->flags & AMDGPU_AMDKFD_CREATE_SVM_BO) {
-		struct dma_fence *fence;
-		struct dma_resv *resv = &bo->base._resv;
-
-		rcu_read_lock();
-		fence = rcu_dereference(resv->fence_excl);
-		if (fence && !fence->ops->signaled)
-			dma_fence_enable_sw_signaling(fence);
-
 		placement->num_placement = 0;
 		placement->num_busy_placement = 0;
-		rcu_read_unlock();
 		return;
 	}
 

drivers/gpu/drm/ast/ast_drv.c

@@ -26,7 +26,6 @@
  * Authors: Dave Airlie <airlied@redhat.com>
  */
 
-#include <linux/console.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 
@@ -233,7 +232,7 @@ static struct pci_driver ast_pci_driver = {
 
 static int __init ast_init(void)
 {
-	if (vgacon_text_force() && ast_modeset == -1)
+	if (drm_firmware_drivers_only() && ast_modeset == -1)
 		return -EINVAL;
 
 	if (ast_modeset == 0)

drivers/gpu/drm/bridge/analogix/anx7625.c

@@ -850,7 +850,7 @@ static int sp_tx_edid_read(struct anx7625_data *ctx,
 	int count, blocks_num;
 	u8 pblock_buf[MAX_DPCD_BUFFER_SIZE];
 	u8 i, j;
-	u8 g_edid_break = 0;
+	int g_edid_break = 0;
 	int ret;
 	struct device *dev = &ctx->client->dev;
 
@@ -881,7 +881,7 @@ static int sp_tx_edid_read(struct anx7625_data *ctx,
 				g_edid_break = edid_read(ctx, offset,
 							 pblock_buf);
 
-				if (g_edid_break)
+				if (g_edid_break < 0)
 					break;
 
 				memcpy(&pedid_blocks_buf[offset],
@@ -1636,7 +1636,7 @@ static int anx7625_register_audio(struct device *dev, struct anx7625_data *ctx)
 							sizeof(codec_data));
 
 	if (IS_ERR(ctx->audio_pdev))
-		return IS_ERR(ctx->audio_pdev);
+		return PTR_ERR(ctx->audio_pdev);
 
 	DRM_DEV_DEBUG_DRIVER(dev, "bound to %s", HDMI_CODEC_DRV_NAME);
 

drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c

@@ -306,19 +306,10 @@ static void ge_b850v3_lvds_remove(void)
 	mutex_unlock(&ge_b850v3_lvds_dev_mutex);
 }
 
-static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
-				       const struct i2c_device_id *id)
+static int ge_b850v3_register(void)
 {
+	struct i2c_client *stdp4028_i2c = ge_b850v3_lvds_ptr->stdp4028_i2c;
 	struct device *dev = &stdp4028_i2c->dev;
-	int ret;
-
-	ret = ge_b850v3_lvds_init(dev);
-
-	if (ret)
-		return ret;
-
-	ge_b850v3_lvds_ptr->stdp4028_i2c = stdp4028_i2c;
-	i2c_set_clientdata(stdp4028_i2c, ge_b850v3_lvds_ptr);
 
 	/* drm bridge initialization */
 	ge_b850v3_lvds_ptr->bridge.funcs = &ge_b850v3_lvds_funcs;
@@ -343,6 +334,27 @@ static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
 			"ge-b850v3-lvds-dp", ge_b850v3_lvds_ptr);
 }
 
+static int stdp4028_ge_b850v3_fw_probe(struct i2c_client *stdp4028_i2c,
+				       const struct i2c_device_id *id)
+{
+	struct device *dev = &stdp4028_i2c->dev;
+	int ret;
+
+	ret = ge_b850v3_lvds_init(dev);
+
+	if (ret)
+		return ret;
+
+	ge_b850v3_lvds_ptr->stdp4028_i2c = stdp4028_i2c;
+	i2c_set_clientdata(stdp4028_i2c, ge_b850v3_lvds_ptr);
+
+	/* Only register after both bridges are probed */
+	if (!ge_b850v3_lvds_ptr->stdp2690_i2c)
+		return 0;
+
+	return ge_b850v3_register();
+}
+
 static int stdp4028_ge_b850v3_fw_remove(struct i2c_client *stdp4028_i2c)
 {
 	ge_b850v3_lvds_remove();
@@ -386,7 +398,11 @@ static int stdp2690_ge_b850v3_fw_probe(struct i2c_client *stdp2690_i2c,
 	ge_b850v3_lvds_ptr->stdp2690_i2c = stdp2690_i2c;
 	i2c_set_clientdata(stdp2690_i2c, ge_b850v3_lvds_ptr);
 
-	return 0;
+	/* Only register after both bridges are probed */
+	if (!ge_b850v3_lvds_ptr->stdp4028_i2c)
+		return 0;
+
+	return ge_b850v3_register();
 }
 
 static int stdp2690_ge_b850v3_fw_remove(struct i2c_client *stdp2690_i2c)