Merge tag 'drm-misc-next-2019-08-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.4:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - dma-buf: dma-fence selftests

Driver Changes:
  - kirin: Various cleanups and reworks
  - komeda: Add support for DT memory-regions
  - meson: Rely on the compatible to detect vpu features
  - omap: Implement alpha and pixel blend mode properties
  - panfrost: Implement per-fd address spaces, various fixes
  - rockchip: DSI DT binding rework
  - fbdev: Various cleanups

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

From: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190823083509.c7mduqdqjnxc7ubb@flea

57 files changed, 1675 insertions, 669 deletions

diff --git a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
index 6bb59ab39f2f..ce4c1fc9116c 100644
--- a/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
+++ b/Documentation/devicetree/bindings/display/rockchip/dw_mipi_dsi_rockchip.txt
@@ -14,6 +14,8 @@ Required properties:
 - rockchip,grf: this soc should set GRF regs to mux vopl/vopb.
 - ports: contain a port node with endpoint definitions as defined in [2].
   For vopb,set the reg = <0> and set the reg = <1> for vopl.
+- video port 0 for the VOP input, the remote endpoint maybe vopb or vopl
+- video port 1 for either a panel or subsequent encoder
 
 Optional properties:
 - power-domains: a phandle to mipi dsi power domain node.
@@ -40,11 +42,12 @@ Example:
 		ports {
 			#address-cells = <1>;
 			#size-cells = <0>;
-			reg = <1>;
 
-			mipi_in: port {
+			mipi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+
 				mipi_in_vopb: endpoint@0 {
 					reg = <0>;
 					remote-endpoint = <&vopb_out_mipi>;
@@ -54,6 +57,16 @@ Example:
 					remote-endpoint = <&vopl_out_mipi>;
 				};
 			};
+
+			mipi_out: port@1 {
+				reg = <1>;
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				mipi_out_panel: endpoint {
+					remote-endpoint = <&panel_in_mipi>;
+				};
+			};
 		};
 
 		panel {
@@ -64,5 +77,11 @@ Example:
 			pinctrl-names = "default";
 			pinctrl-0 = <&lcd_en>;
 			backlight = <&backlight>;
+
+			port {
+				panel_in_mipi: endpoint {
+					remote-endpoint = <&mipi_out_panel>;
+				};
+			};
 		};
 	};
diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
index b6a9c2f1bc41..a23b6752d11a 100644
--- a/drivers/dma-buf/Kconfig
+++ b/drivers/dma-buf/Kconfig
@@ -39,4 +39,9 @@ config UDMABUF
 	  A driver to let userspace turn memfd regions into dma-bufs.
 	  Qemu can use this to create host dmabufs for guest framebuffers.
 
+config DMABUF_SELFTESTS
+	tristate "Selftests for the dma-buf interfaces"
+	default n
+	depends on DMA_SHARED_BUFFER
+
 endmenu
diff --git a/drivers/dma-buf/Makefile b/drivers/dma-buf/Makefile
index dcfb01e7c6f4..03479da06422 100644
--- a/drivers/dma-buf/Makefile
+++ b/drivers/dma-buf/Makefile
@@ -4,3 +4,9 @@ obj-y := dma-buf.o dma-fence.o dma-fence-array.o dma-fence-chain.o \
 obj-$(CONFIG_SYNC_FILE)		+= sync_file.o
 obj-$(CONFIG_SW_SYNC)		+= sw_sync.o sync_debug.o
 obj-$(CONFIG_UDMABUF)		+= udmabuf.o
+
+dmabuf_selftests-y := \
+	selftest.o \
+	st-dma-fence.o
+
+obj-$(CONFIG_DMABUF_SELFTESTS)	+= dmabuf_selftests.o
diff --git a/drivers/dma-buf/selftest.c b/drivers/dma-buf/selftest.c
new file mode 100644
index 000000000000..c60b6944b4bd
--- /dev/null
+++ b/drivers/dma-buf/selftest.c
@@ -0,0 +1,167 @@
+/* SPDX-License-Identifier: MIT */
+
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/compiler.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched/signal.h>
+#include <linux/slab.h>
+
+#include "selftest.h"
+
+enum {
+#define selftest(n, func) __idx_##n,
+#include "selftests.h"
+#undef selftest
+};
+
+#define selftest(n, f) [__idx_##n] = { .name = #n, .func = f },
+static struct selftest {
+	bool enabled;
+	const char *name;
+	int (*func)(void);
+} selftests[] = {
+#include "selftests.h"
+};
+#undef selftest
+
+/* Embed the line number into the parameter name so that we can order tests */
+#define param(n) __PASTE(igt__, __PASTE(__PASTE(__LINE__, __), n))
+#define selftest_0(n, func, id) \
+module_param_named(id, selftests[__idx_##n].enabled, bool, 0400);
+#define selftest(n, func) selftest_0(n, func, param(n))
+#include "selftests.h"
+#undef selftest
+
+int __sanitycheck__(void)
+{
+	pr_debug("Hello World!\n");
+	return 0;
+}
+
+static char *__st_filter;
+
+static bool apply_subtest_filter(const char *caller, const char *name)
+{
+	char *filter, *sep, *tok;
+	bool result = true;
+
+	filter = kstrdup(__st_filter, GFP_KERNEL);
+	for (sep = filter; (tok = strsep(&sep, ","));) {
+		bool allow = true;
+		char *sl;
+
+		if (*tok == '!') {
+			allow = false;
+			tok++;
+		}
+
+		if (*tok == '\0')
+			continue;
+
+		sl = strchr(tok, '/');
+		if (sl) {
+			*sl++ = '\0';
+			if (strcmp(tok, caller)) {
+				if (allow)
+					result = false;
+				continue;
+			}
+			tok = sl;
+		}
+
+		if (strcmp(tok, name)) {
+			if (allow)
+				result = false;
+			continue;
+		}
+
+		result = allow;
+		break;
+	}
+	kfree(filter);
+
+	return result;
+}
+
+int
+__subtests(const char *caller, const struct subtest *st, int count, void *data)
+{
+	int err;
+
+	for (; count--; st++) {
+		cond_resched();
+		if (signal_pending(current))
+			return -EINTR;
+
+		if (!apply_subtest_filter(caller, st->name))
+			continue;
+
+		pr_info("dma-buf: Running %s/%s\n", caller, st->name);
+
+		err = st->func(data);
+		if (err && err != -EINTR) {
+			pr_err("dma-buf/%s: %s failed with error %d\n",
+			       caller, st->name, err);
+			return err;
+		}
+	}
+
+	return 0;
+}
+
+static void set_default_test_all(struct selftest *st, unsigned long count)
+{
+	unsigned long i;
+
+	for (i = 0; i < count; i++)
+		if (st[i].enabled)
+			return;
+
+	for (i = 0; i < count; i++)
+		st[i].enabled = true;
+}
+
+static int run_selftests(struct selftest *st, unsigned long count)
+{
+	int err = 0;
+
+	set_default_test_all(st, count);
+
+	/* Tests are listed in natural order in selftests.h */
+	for (; count--; st++) {
+		if (!st->enabled)
+			continue;
+
+		pr_info("dma-buf: Running %s\n", st->name);
+		err = st->func();
+		if (err)
+			break;
+	}
+
+	if (WARN(err > 0 || err == -ENOTTY,
+		 "%s returned %d, conflicting with selftest's magic values!\n",
+		 st->name, err))
+		err = -1;
+
+	return err;
+}
+
+static int __init st_init(void)
+{
+	return run_selftests(selftests, ARRAY_SIZE(selftests));
+}
+
+static void __exit st_exit(void)
+{
+}
+
+module_param_named(st_filter, __st_filter, charp, 0400);
+module_init(st_init);
+module_exit(st_exit);
+
+MODULE_DESCRIPTION("Self-test harness for dma-buf");
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/dma-buf/selftest.h b/drivers/dma-buf/selftest.h
new file mode 100644
index 000000000000..45793aff6142
--- /dev/null
+++ b/drivers/dma-buf/selftest.h
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: MIT
+
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __SELFTEST_H__
+#define __SELFTEST_H__
+
+#include <linux/compiler.h>
+
+#define selftest(name, func) int func(void);
+#include "selftests.h"
+#undef selftest
+
+struct subtest {
+	int (*func)(void *data);
+	const char *name;
+};
+
+int __subtests(const char *caller,
+	       const struct subtest *st,
+	       int count,
+	       void *data);
+#define subtests(T, data) \
+	__subtests(__func__, T, ARRAY_SIZE(T), data)
+
+#define SUBTEST(x) { x, #x }
+
+#endif /* __SELFTEST_H__ */
diff --git a/drivers/dma-buf/selftests.h b/drivers/dma-buf/selftests.h
new file mode 100644
index 000000000000..5320386f02e5
--- /dev/null
+++ b/drivers/dma-buf/selftests.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: MIT */
+/* List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/dmabuf_selftest
+ */
+selftest(sanitycheck, __sanitycheck__) /* keep first (igt selfcheck) */
+selftest(dma_fence, dma_fence)
diff --git a/drivers/dma-buf/st-dma-fence.c b/drivers/dma-buf/st-dma-fence.c
new file mode 100644
index 000000000000..e593064341c8
--- /dev/null
+++ b/drivers/dma-buf/st-dma-fence.c
@@ -0,0 +1,574 @@
+/* SPDX-License-Identifier: MIT */
+
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-fence.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/sched/signal.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+#include "selftest.h"
+
+static struct kmem_cache *slab_fences;
+
+static struct mock_fence {
+	struct dma_fence base;
+	struct spinlock lock;
+} *to_mock_fence(struct dma_fence *f) {
+	return container_of(f, struct mock_fence, base);
+}
+
+static const char *mock_name(struct dma_fence *f)
+{
+	return "mock";
+}
+
+static void mock_fence_release(struct dma_fence *f)
+{
+	kmem_cache_free(slab_fences, to_mock_fence(f));
+}
+
+struct wait_cb {
+	struct dma_fence_cb cb;
+	struct task_struct *task;
+};
+
+static void mock_wakeup(struct dma_fence *f, struct dma_fence_cb *cb)
+{
+	wake_up_process(container_of(cb, struct wait_cb, cb)->task);
+}
+
+static long mock_wait(struct dma_fence *f, bool intr, long timeout)
+{
+	const int state = intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE;
+	struct wait_cb cb = { .task = current };
+
+	if (dma_fence_add_callback(f, &cb.cb, mock_wakeup))
+		return timeout;
+
+	while (timeout) {
+		set_current_state(state);
+
+		if (test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &f->flags))
+			break;
+
+		if (signal_pending_state(state, current))
+			break;
+
+		timeout = schedule_timeout(timeout);
+	}
+	__set_current_state(TASK_RUNNING);
+
+	if (!dma_fence_remove_callback(f, &cb.cb))
+		return timeout;
+
+	if (signal_pending_state(state, current))
+		return -ERESTARTSYS;
+
+	return -ETIME;
+}
+
+static const struct dma_fence_ops mock_ops = {
+	.get_driver_name = mock_name,
+	.get_timeline_name = mock_name,
+	.wait = mock_wait,
+	.release = mock_fence_release,
+};
+
+static struct dma_fence *mock_fence(void)
+{
+	struct mock_fence *f;
+
+	f = kmem_cache_alloc(slab_fences, GFP_KERNEL);
+	if (!f)
+		return NULL;
+
+	spin_lock_init(&f->lock);
+	dma_fence_init(&f->base, &mock_ops, &f->lock, 0, 0);
+
+	return &f->base;
+}
+
+static int sanitycheck(void *arg)
+{
+	struct dma_fence *f;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	dma_fence_signal(f);
+	dma_fence_put(f);
+
+	return 0;
+}
+
+static int test_signaling(void *arg)
+{
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_is_signaled(f)) {
+		pr_err("Fence unexpectedly signaled on creation\n");
+		goto err_free;
+	}
+
+	if (dma_fence_signal(f)) {
+		pr_err("Fence reported being already signaled\n");
+		goto err_free;
+	}
+
+	if (!dma_fence_is_signaled(f)) {
+		pr_err("Fence not reporting signaled\n");
+		goto err_free;
+	}
+
+	if (!dma_fence_signal(f)) {
+		pr_err("Fence reported not being already signaled\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+struct simple_cb {
+	struct dma_fence_cb cb;
+	bool seen;
+};
+
+static void simple_callback(struct dma_fence *f, struct dma_fence_cb *cb)
+{
+	smp_store_mb(container_of(cb, struct simple_cb, cb)->seen, true);
+}
+
+static int test_add_callback(void *arg)
+{
+	struct simple_cb cb = {};
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_add_callback(f, &cb.cb, simple_callback)) {
+		pr_err("Failed to add callback, fence already signaled!\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (!cb.seen) {
+		pr_err("Callback failed!\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_late_add_callback(void *arg)
+{
+	struct simple_cb cb = {};
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	dma_fence_signal(f);
+
+	if (!dma_fence_add_callback(f, &cb.cb, simple_callback)) {
+		pr_err("Added callback, but fence was already signaled!\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (cb.seen) {
+		pr_err("Callback called after failed attachment !\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_rm_callback(void *arg)
+{
+	struct simple_cb cb = {};
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_add_callback(f, &cb.cb, simple_callback)) {
+		pr_err("Failed to add callback, fence already signaled!\n");
+		goto err_free;
+	}
+
+	if (!dma_fence_remove_callback(f, &cb.cb)) {
+		pr_err("Failed to remove callback!\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (cb.seen) {
+		pr_err("Callback still signaled after removal!\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_late_rm_callback(void *arg)
+{
+	struct simple_cb cb = {};
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_add_callback(f, &cb.cb, simple_callback)) {
+		pr_err("Failed to add callback, fence already signaled!\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (!cb.seen) {
+		pr_err("Callback failed!\n");
+		goto err_free;
+	}
+
+	if (dma_fence_remove_callback(f, &cb.cb)) {
+		pr_err("Callback removal succeed after being executed!\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_status(void *arg)
+{
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_get_status(f)) {
+		pr_err("Fence unexpectedly has signaled status on creation\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (!dma_fence_get_status(f)) {
+		pr_err("Fence not reporting signaled status\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_error(void *arg)
+{
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	dma_fence_set_error(f, -EIO);
+
+	if (dma_fence_get_status(f)) {
+		pr_err("Fence unexpectedly has error status before signal\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+	if (dma_fence_get_status(f) != -EIO) {
+		pr_err("Fence not reporting error status, got %d\n",
+		       dma_fence_get_status(f));
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_put(f);
+	return err;
+}
+
+static int test_wait(void *arg)
+{
+	struct dma_fence *f;
+	int err = -EINVAL;
+
+	f = mock_fence();
+	if (!f)
+		return -ENOMEM;
+
+	if (dma_fence_wait_timeout(f, false, 0) != -ETIME) {
+		pr_err("Wait reported complete before being signaled\n");
+		goto err_free;
+	}
+
+	dma_fence_signal(f);
+
+	if (dma_fence_wait_timeout(f, false, 0) != 0) {
+		pr_err("Wait reported incomplete after being signaled\n");
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	dma_fence_signal(f);
+	dma_fence_put(f);
+	return err;
+}
+
+struct wait_timer {
+	struct timer_list timer;
+	struct dma_fence *f;
+};
+
+static void wait_timer(struct timer_list *timer)
+{
+	struct wait_timer *wt = from_timer(wt, timer, timer);
+
+	dma_fence_signal(wt->f);
+}
+
+static int test_wait_timeout(void *arg)
+{
+	struct wait_timer wt;
+	int err = -EINVAL;
+
+	timer_setup_on_stack(&wt.timer, wait_timer, 0);
+
+	wt.f = mock_fence();
+	if (!wt.f)
+		return -ENOMEM;
+
+	if (dma_fence_wait_timeout(wt.f, false, 1) != -ETIME) {
+		pr_err("Wait reported complete before being signaled\n");
+		goto err_free;
+	}
+
+	mod_timer(&wt.timer, jiffies + 1);
+
+	if (dma_fence_wait_timeout(wt.f, false, 2) == -ETIME) {
+		if (timer_pending(&wt.timer)) {
+			pr_notice("Timer did not fire within the jiffie!\n");
+			err = 0; /* not our fault! */
+		} else {
+			pr_err("Wait reported incomplete after timeout\n");
+		}
+		goto err_free;
+	}
+
+	err = 0;
+err_free:
+	del_timer_sync(&wt.timer);
+	destroy_timer_on_stack(&wt.timer);
+	dma_fence_signal(wt.f);
+	dma_fence_put(wt.f);
+	return err;
+}
+
+static int test_stub(void *arg)
+{
+	struct dma_fence *f[64];
+	int err = -EINVAL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(f); i++) {
+		f[i] = dma_fence_get_stub();
+		if (!dma_fence_is_signaled(f[i])) {
+			pr_err("Obtained unsignaled stub fence!\n");
+			goto err;
+		}
+	}
+
+	err = 0;
+err:
+	while (i--)
+		dma_fence_put(f[i]);
+	return err;
+}
+
+/* Now off to the races! */
+
+struct race_thread {
+	struct dma_fence __rcu **fences;
+	struct task_struct *task;
+	bool before;
+	int id;
+};
+
+static void __wait_for_callbacks(struct dma_fence *f)
+{
+	spin_lock_irq(f->lock);
+	spin_unlock_irq(f->lock);
+}
+
+static int thread_signal_callback(void *arg)
+{
+	const struct race_thread *t = arg;
+	unsigned long pass = 0;
+	unsigned long miss = 0;
+	int err = 0;
+
+	while (!err && !kthread_should_stop()) {
+		struct dma_fence *f1, *f2;
+		struct simple_cb cb;
+
+		f1 = mock_fence();
+		if (!f1) {
+			err = -ENOMEM;
+			break;
+		}
+
+		rcu_assign_pointer(t->fences[t->id], f1);
+		smp_wmb();
+
+		rcu_read_lock();
+		do {
+			f2 = dma_fence_get_rcu_safe(&t->fences[!t->id]);
+		} while (!f2 && !kthread_should_stop());
+		rcu_read_unlock();
+
+		if (t->before)
+			dma_fence_signal(f1);
+
+		smp_store_mb(cb.seen, false);
+		if (!f2 || dma_fence_add_callback(f2, &cb.cb, simple_callback))
+			miss++, cb.seen = true;
+
+		if (!t->before)
+			dma_fence_signal(f1);
+
+		if (!cb.seen) {
+			dma_fence_wait(f2, false);
+			__wait_for_callbacks(f2);
+		}
+
+		if (!READ_ONCE(cb.seen)) {
+			pr_err("Callback not seen on thread %d, pass %lu (%lu misses), signaling %s add_callback; fence signaled? %s\n",
+			       t->id, pass, miss,
+			       t->before ? "before" : "after",
+			       dma_fence_is_signaled(f2) ? "yes" : "no");
+			err = -EINVAL;
+		}
+
+		dma_fence_put(f2);
+
+		rcu_assign_pointer(t->fences[t->id], NULL);
+		smp_wmb();
+
+		dma_fence_put(f1);
+
+		pass++;
+	}
+
+	pr_info("%s[%d] completed %lu passes, %lu misses\n",
+		__func__, t->id, pass, miss);
+	return err;
+}
+
+static int race_signal_callback(void *arg)
+{
+	struct dma_fence __rcu *f[2] = {};
+	int ret = 0;
+	int pass;
+
+	for (pass = 0; !ret && pass <= 1; pass++) {
+		struct race_thread t[2];
+		int i;
+
+		for (i = 0; i < ARRAY_SIZE(t); i++) {
+			t[i].fences = f;
+			t[i].id = i;
+			t[i].before = pass;
+			t[i].task = kthread_run(thread_signal_callback, &t[i],
+						"dma-fence:%d", i);
+			get_task_struct(t[i].task);
+		}
+
+		msleep(50);
+
+		for (i = 0; i < ARRAY_SIZE(t); i++) {
+			int err;
+
+			err = kthread_stop(t[i].task);
+			if (err && !ret)
+				ret = err;
+
+			put_task_struct(t[i].task);
+		}
+	}
+
+	return ret;
+}
+
+int dma_fence(void)
+{
+	static const struct subtest tests[] = {
+		SUBTEST(sanitycheck),
+		SUBTEST(test_signaling),
+		SUBTEST(test_add_callback),
+		SUBTEST(test_late_add_callback),
+		SUBTEST(test_rm_callback),
+		SUBTEST(test_late_rm_callback),
+		SUBTEST(test_status),
+		SUBTEST(test_error),
+		SUBTEST(test_wait),
+		SUBTEST(test_wait_timeout),
+		SUBTEST(test_stub),
+		SUBTEST(race_signal_callback),
+	};
+	int ret;
+
+	pr_info("sizeof(dma_fence)=%zu\n", sizeof(struct dma_fence));
+
+	slab_fences = KMEM_CACHE(mock_fence,
+				 SLAB_TYPESAFE_BY_RCU |
+				 SLAB_HWCACHE_ALIGN);
+	if (!slab_fences)
+		return -ENOMEM;
+
+	ret = subtests(tests, NULL);
+
+	kmem_cache_destroy(slab_fences);
+
+	return ret;
+}
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
index 1ff7f4b2c620..0142ee991957 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -8,6 +8,7 @@
 #include <linux/iommu.h>
 #include <linux/of_device.h>
 #include <linux/of_graph.h>
+#include <linux/of_reserved_mem.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 #ifdef CONFIG_DEBUG_FS
@@ -146,6 +147,12 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
 		return mdev->irq;
 	}
 
+	/* Get the optional framebuffer memory resource */
+	ret = of_reserved_mem_device_init(dev);
+	if (ret && ret != -ENODEV)
+		return ret;
+	ret = 0;
+
 	for_each_available_child_of_node(np, child) {
 		if (of_node_cmp(child->name, "pipeline") == 0) {
 			ret = komeda_parse_pipe_dt(mdev, child);
@@ -292,6 +299,8 @@ void komeda_dev_destroy(struct komeda_dev *mdev)
 
 	mdev->n_pipelines = 0;
 
+	of_reserved_mem_device_release(dev);
+
 	if (funcs && funcs->cleanup)
 		funcs->cleanup(mdev);
 
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
index 0f949978d3fc..ac1e001d0882 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi-cec.c
@@ -256,8 +256,8 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
 	dw_hdmi_write(cec, 0, HDMI_CEC_POLARITY);
 
 	cec->adap = cec_allocate_adapter(&dw_hdmi_cec_ops, cec, "dw_hdmi",
-					 CEC_CAP_LOG_ADDRS | CEC_CAP_TRANSMIT |
-					 CEC_CAP_RC | CEC_CAP_PASSTHROUGH,
+					 CEC_CAP_DEFAULTS |
+					 CEC_CAP_CONNECTOR_INFO,
 					 CEC_MAX_LOG_ADDRS);
 	if (IS_ERR(cec->adap))
 		return PTR_ERR(cec->adap);
@@ -278,13 +278,14 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
 	if (ret < 0)
 		return ret;
 
-	cec->notify = cec_notifier_get(pdev->dev.parent);
+	cec->notify = cec_notifier_cec_adap_register(pdev->dev.parent,
+						     NULL, cec->adap);
 	if (!cec->notify)
 		return -ENOMEM;
 
 	ret = cec_register_adapter(cec->adap, pdev->dev.parent);
 	if (ret < 0) {
-		cec_notifier_put(cec->notify);
+		cec_notifier_cec_adap_unregister(cec->notify);
 		return ret;
 	}
 
@@ -294,8 +295,6 @@ static int dw_hdmi_cec_probe(struct platform_device *pdev)
 	 */
 	devm_remove_action(&pdev->dev, dw_hdmi_cec_del, cec);
 
-	cec_register_cec_notifier(cec->adap, cec->notify);
-
 	return 0;
 }
 
@@ -303,8 +302,8 @@ static int dw_hdmi_cec_remove(struct platform_device *pdev)
 {
 	struct dw_hdmi_cec *cec = platform_get_drvdata(pdev);
 
+	cec_notifier_cec_adap_unregister(cec->notify);
 	cec_unregister_adapter(cec->adap);
-	cec_notifier_put(cec->notify);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index a4685d062591..521d689413c8 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -189,6 +189,7 @@ struct dw_hdmi {
 	void (*enable_audio)(struct dw_hdmi *hdmi);
 	void (*disable_audio)(struct dw_hdmi *hdmi);
 
+	struct mutex cec_notifier_mutex;
 	struct cec_notifier *cec_notifier;
 };
 
@@ -2229,6 +2230,8 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
 	struct dw_hdmi *hdmi = bridge->driver_private;
 	struct drm_encoder *encoder = bridge->encoder;
 	struct drm_connector *connector = &hdmi->connector;
+	struct cec_connector_info conn_info;
+	struct cec_notifier *notifier;
 
 	connector->interlace_allowed = 1;
 	connector->polled = DRM_CONNECTOR_POLL_HPD;
@@ -2242,9 +2245,29 @@ static int dw_hdmi_bridge_attach(struct drm_bridge *bridge)
 
 	drm_connector_attach_encoder(connector, encoder);
 
+	cec_fill_conn_info_from_drm(&conn_info, connector);
+
+	notifier = cec_notifier_conn_register(hdmi->dev, NULL, &conn_info);
+	if (!notifier)
+		return -ENOMEM;
+
+	mutex_lock(&hdmi->cec_notifier_mutex);
+	hdmi->cec_notifier = notifier;
+	mutex_unlock(&hdmi->cec_notifier_mutex);
+
 	return 0;
 }
 
+static void dw_hdmi_bridge_detach(struct drm_bridge *bridge)
+{
+	struct dw_hdmi *hdmi = bridge->driver_private;
+
+	mutex_lock(&hdmi->cec_notifier_mutex);
+	cec_notifier_conn_unregister(hdmi->cec_notifier);
+	hdmi->cec_notifier = NULL;
+	mutex_unlock(&hdmi->cec_notifier_mutex);
+}
+
 static enum drm_mode_status
 dw_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
 			  const struct drm_display_mode *mode)
@@ -2301,6 +2324,7 @@ static void dw_hdmi_bridge_enable(struct drm_bridge *bridge)
 
 static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
 	.attach = dw_hdmi_bridge_attach,
+	.detach = dw_hdmi_bridge_detach,
 	.enable = dw_hdmi_bridge_enable,
 	.disable = dw_hdmi_bridge_disable,
 	.mode_set = dw_hdmi_bridge_mode_set,
@@ -2408,9 +2432,11 @@ static irqreturn_t dw_hdmi_irq(int irq, void *dev_id)
 				       phy_stat & HDMI_PHY_HPD,
 				       phy_stat & HDMI_PHY_RX_SENSE);
 
-		if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0)
-			cec_notifier_set_phys_addr(hdmi->cec_notifier,
-						   CEC_PHYS_ADDR_INVALID);
+		if ((phy_stat & (HDMI_PHY_RX_SENSE | HDMI_PHY_HPD)) == 0) {
+			mutex_lock(&hdmi->cec_notifier_mutex);
+			cec_notifier_phys_addr_invalidate(hdmi->cec_notifier);
+			mutex_unlock(&hdmi->cec_notifier_mutex);
+		}
 	}
 
 	if (intr_stat & HDMI_IH_PHY_STAT0_HPD) {
@@ -2596,6 +2622,7 @@ __dw_hdmi_probe(struct platform_device *pdev,
 
 	mutex_init(&hdmi->mutex);
 	mutex_init(&hdmi->audio_mutex);
+	mutex_init(&hdmi->cec_notifier_mutex);
 	spin_lock_init(&hdmi->audio_lock);
 
 	ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0);
@@ -2728,12 +2755,6 @@ __dw_hdmi_probe(struct platform_device *pdev,
 	if (ret)
 		goto err_iahb;
 
-	hdmi->cec_notifier = cec_notifier_get(dev);
-	if (!hdmi->cec_notifier) {
-		ret = -ENOMEM;
-		goto err_iahb;
-	}
-
 	/*
 	 * To prevent overflows in HDMI_IH_FC_STAT2, set the clk regenerator
 	 * N and cts values before enabling phy
@@ -2832,9 +2853,6 @@ err_iahb:
 		hdmi->ddc = NULL;
 	}
 
-	if (hdmi->cec_notifier)
-		cec_notifier_put(hdmi->cec_notifier);
-
 	clk_disable_unprepare(hdmi->iahb_clk);
 	if (hdmi->cec_clk)
 		clk_disable_unprepare(hdmi->cec_clk);
@@ -2856,9 +2874,6 @@ static void __dw_hdmi_remove(struct dw_hdmi *hdmi)
 	/* Disable all interrupts */
 	hdmi_writeb(hdmi, ~0, HDMI_IH_MUTE_PHY_STAT0);
 
-	if (hdmi->cec_notifier)
-		cec_notifier_put(hdmi->cec_notifier);
-
 	clk_disable_unprepare(hdmi->iahb_clk);
 	clk_disable_unprepare(hdmi->isfr_clk);
 	if (hdmi->cec_clk)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index e652305d8f98..c456c3d3def2 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -328,11 +328,9 @@ void drm_minor_release(struct drm_minor *minor)
  *		struct drm_device *drm;
  *		int ret;
  *
- *		[
- *		  devm_kzalloc() can't be used here because the drm_device
- *		  lifetime can exceed the device lifetime if driver unbind
- *		  happens when userspace still has open file descriptors.
- *		]
+ *		// devm_kzalloc() can't be used here because the drm_device '
+ *		// lifetime can exceed the device lifetime if driver unbind
+ *		// happens when userspace still has open file descriptors.
  *		priv = kzalloc(sizeof(*priv), GFP_KERNEL);
  *		if (!priv)
  *			return -ENOMEM;
@@ -355,7 +353,7 @@ void drm_minor_release(struct drm_minor *minor)
  *		if (IS_ERR(priv->pclk))
  *			return PTR_ERR(priv->pclk);
  *
- *		[ Further setup, display pipeline etc ]
+ *		// Further setup, display pipeline etc
  *
  *		platform_set_drvdata(pdev, drm);
  *
@@ -370,7 +368,7 @@ void drm_minor_release(struct drm_minor *minor)
  *		return 0;
  *	}
  *
- *	[ This function is called before the devm_ resources are released ]
+ *	// This function is called before the devm_ resources are released
  *	static int driver_remove(struct platform_device *pdev)
  *	{
  *		struct drm_device *drm = platform_get_drvdata(pdev);
@@ -381,7 +379,7 @@ void drm_minor_release(struct drm_minor *minor)
  *		return 0;
  *	}
  *
- *	[ This function is called on kernel restart and shutdown ]
+ *	// This function is called on kernel restart and shutdown
  *	static void driver_shutdown(struct platform_device *pdev)
  *	{
  *		drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
diff --git a/drivers/gpu/drm/drm_kms_helper_common.c b/drivers/gpu/drm/drm_kms_helper_common.c
index d9a5ac81949e..221a8528c993 100644
--- a/drivers/gpu/drm/drm_kms_helper_common.c
+++ b/drivers/gpu/drm/drm_kms_helper_common.c
@@ -40,7 +40,7 @@ MODULE_LICENSE("GPL and additional rights");
 /* Backward compatibility for drm_kms_helper.edid_firmware */
 static int edid_firmware_set(const char *val, const struct kernel_param *kp)
 {
-	DRM_NOTE("drm_kms_firmware.edid_firmware is deprecated, please use drm.edid_firmware instead.\n");
+	DRM_NOTE("drm_kms_helper.edid_firmware is deprecated, please use drm.edid_firmware instead.\n");
 
 	return __drm_set_edid_firmware_path(val);
 }
diff --git a/drivers/gpu/drm/hisilicon/kirin/Kconfig b/drivers/gpu/drm/hisilicon/kirin/Kconfig
index 0fa29af08ad0..290553e2f6b4 100644
--- a/drivers/gpu/drm/hisilicon/kirin/Kconfig
+++ b/drivers/gpu/drm/hisilicon/kirin/Kconfig
@@ -5,16 +5,8 @@ config DRM_HISI_KIRIN
 	select DRM_KMS_HELPER
 	select DRM_GEM_CMA_HELPER
 	select DRM_KMS_CMA_HELPER
-	select HISI_KIRIN_DW_DSI
+	select DRM_MIPI_DSI
 	help
 	  Choose this option if you have a hisilicon Kirin chipsets(hi6220).
 	  If M is selected the module will be called kirin-drm.
 
-config HISI_KIRIN_DW_DSI
-	tristate "HiSilicon Kirin specific extensions for Synopsys DW MIPI DSI"
-	depends on DRM_HISI_KIRIN
-	select DRM_MIPI_DSI
-	help
-	 This selects support for HiSilicon Kirin SoC specific extensions for
-	 the Synopsys DesignWare DSI driver. If you want to enable MIPI DSI on
-	 hi6220 based SoC, you should selet this option.
diff --git a/drivers/gpu/drm/hisilicon/kirin/Makefile b/drivers/gpu/drm/hisilicon/kirin/Makefile
index c0501fa3fe53..d9323f66a7d4 100644
--- a/drivers/gpu/drm/hisilicon/kirin/Makefile
+++ b/drivers/gpu/drm/hisilicon/kirin/Makefile
@@ -2,6 +2,5 @@
 kirin-drm-y := kirin_drm_drv.o \
 	       kirin_drm_ade.o
 
-obj-$(CONFIG_DRM_HISI_KIRIN) += kirin-drm.o
+obj-$(CONFIG_DRM_HISI_KIRIN) += kirin-drm.o dw_drm_dsi.o
 
-obj-$(CONFIG_HISI_KIRIN_DW_DSI) += dw_drm_dsi.o
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h b/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h
index e2ac09894a6d..0da860200410 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_ade_reg.h
@@ -83,6 +83,7 @@
 #define VSIZE_OFST			20
 #define LDI_INT_EN			0x741C
 #define FRAME_END_INT_EN_OFST		1
+#define UNDERFLOW_INT_EN_OFST		2
 #define LDI_CTRL			0x7420
 #define BPP_OFST			3
 #define DATA_GATE_EN			BIT(2)
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index 0df1afdf319d..73cd28a6ea07 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -30,19 +30,14 @@
 #include <drm/drm_plane_helper.h>
 #include <drm/drm_probe_helper.h>
 #include <drm/drm_vblank.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 
 #include "kirin_drm_drv.h"
 #include "kirin_ade_reg.h"
 
-#define PRIMARY_CH	ADE_CH1 /* primary plane */
 #define OUT_OVLY	ADE_OVLY2 /* output overlay compositor */
 #define ADE_DEBUG	1
 
-#define to_ade_crtc(crtc) \
-	container_of(crtc, struct ade_crtc, base)
-
-#define to_ade_plane(plane) \
-	container_of(plane, struct ade_plane, base)
 
 struct ade_hw_ctx {
 	void __iomem  *base;
@@ -51,36 +46,14 @@ struct ade_hw_ctx {
 	struct clk *media_noc_clk;
 	struct clk *ade_pix_clk;
 	struct reset_control *reset;
+	struct work_struct display_reset_wq;
 	bool power_on;
 	int irq;
-};
-
-struct ade_crtc {
-	struct drm_crtc base;
-	struct ade_hw_ctx *ctx;
-	bool enable;
-	u32 out_format;
-};
-
-struct ade_plane {
-	struct drm_plane base;
-	void *ctx;
-	u8 ch; /* channel */
-};
 
-struct ade_data {
-	struct ade_crtc acrtc;
-	struct ade_plane aplane[ADE_CH_NUM];
-	struct ade_hw_ctx ctx;
+	struct drm_crtc *crtc;
 };
 
-/* ade-format info: */
-struct ade_format {
-	u32 pixel_format;
-	enum ade_fb_format ade_format;
-};
-
-static const struct ade_format ade_formats[] = {
+static const struct kirin_format ade_formats[] = {
 	/* 16bpp RGB: */
 	{ DRM_FORMAT_RGB565, ADE_RGB_565 },
 	{ DRM_FORMAT_BGR565, ADE_BGR_565 },
@@ -96,7 +69,7 @@ static const struct ade_format ade_formats[] = {
 	{ DRM_FORMAT_ABGR8888, ADE_ABGR_8888 },
 };
 
-static const u32 channel_formats1[] = {
+static const u32 channel_formats[] = {
 	/* channel 1,2,3,4 */
 	DRM_FORMAT_RGB565, DRM_FORMAT_BGR565, DRM_FORMAT_RGB888,
 	DRM_FORMAT_BGR888, DRM_FORMAT_XRGB8888, DRM_FORMAT_XBGR8888,
@@ -104,19 +77,6 @@ static const u32 channel_formats1[] = {
 	DRM_FORMAT_ABGR8888
 };
 
-u32 ade_get_channel_formats(u8 ch, const u32 **formats)
-{
-	switch (ch) {
-	case ADE_CH1:
-		*formats = channel_formats1;
-		return ARRAY_SIZE(channel_formats1);
-	default:
-		DRM_ERROR("no this channel %d\n", ch);
-		*formats = NULL;
-		return 0;
-	}
-}
-
 /* convert from fourcc format to ade format */
 static u32 ade_get_format(u32 pixel_format)
 {
@@ -124,7 +84,7 @@ static u32 ade_get_format(u32 pixel_format)
 
 	for (i = 0; i < ARRAY_SIZE(ade_formats); i++)
 		if (ade_formats[i].pixel_format == pixel_format)
-			return ade_formats[i].ade_format;
+			return ade_formats[i].hw_format;
 
 	/* not found */
 	DRM_ERROR("Not found pixel format!!fourcc_format= %d\n",
@@ -176,14 +136,15 @@ static void ade_init(struct ade_hw_ctx *ctx)
 	 */
 	ade_update_bits(base + ADE_CTRL, FRM_END_START_OFST,
 			FRM_END_START_MASK, REG_EFFECTIVE_IN_ADEEN_FRMEND);
+	ade_update_bits(base + LDI_INT_EN, UNDERFLOW_INT_EN_OFST, MASK(1), 1);
 }
 
 static bool ade_crtc_mode_fixup(struct drm_crtc *crtc,
 				const struct drm_display_mode *mode,
 				struct drm_display_mode *adjusted_mode)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 
 	adjusted_mode->clock =
 		clk_round_rate(ctx->ade_pix_clk, mode->clock * 1000) / 1000;
@@ -208,11 +169,10 @@ static void ade_set_pix_clk(struct ade_hw_ctx *ctx,
 	adj_mode->clock = clk_get_rate(ctx->ade_pix_clk) / 1000;
 }
 
-static void ade_ldi_set_mode(struct ade_crtc *acrtc,
+static void ade_ldi_set_mode(struct ade_hw_ctx *ctx,
 			     struct drm_display_mode *mode,
 			     struct drm_display_mode *adj_mode)
 {
-	struct ade_hw_ctx *ctx = acrtc->ctx;
 	void __iomem *base = ctx->base;
 	u32 width = mode->hdisplay;
 	u32 height = mode->vdisplay;
@@ -299,9 +259,8 @@ static void ade_power_down(struct ade_hw_ctx *ctx)
 	ctx->power_on = false;
 }
 
-static void ade_set_medianoc_qos(struct ade_crtc *acrtc)
+static void ade_set_medianoc_qos(struct ade_hw_ctx *ctx)
 {
-	struct ade_hw_ctx *ctx = acrtc->ctx;
 	struct regmap *map = ctx->noc_regmap;
 
 	regmap_update_bits(map, ADE0_QOSGENERATOR_MODE,
@@ -317,8 +276,8 @@ static void ade_set_medianoc_qos(struct ade_crtc *acrtc)
 
 static int ade_crtc_enable_vblank(struct drm_crtc *crtc)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	void __iomem *base = ctx->base;
 
 	if (!ctx->power_on)
@@ -332,8 +291,8 @@ static int ade_crtc_enable_vblank(struct drm_crtc *crtc)
 
 static void ade_crtc_disable_vblank(struct drm_crtc *crtc)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	void __iomem *base = ctx->base;
 
 	if (!ctx->power_on) {
@@ -345,11 +304,21 @@ static void ade_crtc_disable_vblank(struct drm_crtc *crtc)
 			MASK(1), 0);
 }
 
+static void drm_underflow_wq(struct work_struct *work)
+{
+	struct ade_hw_ctx *ctx = container_of(work, struct ade_hw_ctx,
+					      display_reset_wq);
+	struct drm_device *drm_dev = ctx->crtc->dev;
+	struct drm_atomic_state *state;
+
+	state = drm_atomic_helper_suspend(drm_dev);
+	drm_atomic_helper_resume(drm_dev, state);
+}
+
 static irqreturn_t ade_irq_handler(int irq, void *data)
 {
-	struct ade_crtc *acrtc = data;
-	struct ade_hw_ctx *ctx = acrtc->ctx;
-	struct drm_crtc *crtc = &acrtc->base;
+	struct ade_hw_ctx *ctx = data;
+	struct drm_crtc *crtc = ctx->crtc;
 	void __iomem *base = ctx->base;
 	u32 status;
 
@@ -362,15 +331,20 @@ static irqreturn_t ade_irq_handler(int irq, void *data)
 				MASK(1), 1);
 		drm_crtc_handle_vblank(crtc);
 	}
+	if (status & BIT(UNDERFLOW_INT_EN_OFST)) {
+		ade_update_bits(base + LDI_INT_CLR, UNDERFLOW_INT_EN_OFST,
+				MASK(1), 1);
+		DRM_ERROR("LDI underflow!");
+		schedule_work(&ctx->display_reset_wq);
+	}
 
 	return IRQ_HANDLED;
 }
 
-static void ade_display_enable(struct ade_crtc *acrtc)
+static void ade_display_enable(struct ade_hw_ctx *ctx)
 {
-	struct ade_hw_ctx *ctx = acrtc->ctx;
 	void __iomem *base = ctx->base;
-	u32 out_fmt = acrtc->out_format;
+	u32 out_fmt = LDI_OUT_RGB_888;
 
 	/* enable output overlay compositor */
 	writel(ADE_ENABLE, base + ADE_OVLYX_CTL(OUT_OVLY));
@@ -483,11 +457,11 @@ static void ade_dump_regs(void __iomem *base) { }
 static void ade_crtc_atomic_enable(struct drm_crtc *crtc,
 				   struct drm_crtc_state *old_state)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	int ret;
 
-	if (acrtc->enable)
+	if (kcrtc->enable)
 		return;
 
 	if (!ctx->power_on) {
@@ -496,63 +470,63 @@ static void ade_crtc_atomic_enable(struct drm_crtc *crtc,
 			return;
 	}
 
-	ade_set_medianoc_qos(acrtc);
-	ade_display_enable(acrtc);
+	ade_set_medianoc_qos(ctx);
+	ade_display_enable(ctx);
 	ade_dump_regs(ctx->base);
 	drm_crtc_vblank_on(crtc);
-	acrtc->enable = true;
+	kcrtc->enable = true;
 }
 
 static void ade_crtc_atomic_disable(struct drm_crtc *crtc,
 				    struct drm_crtc_state *old_state)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 
-	if (!acrtc->enable)
+	if (!kcrtc->enable)
 		return;
 
 	drm_crtc_vblank_off(crtc);
 	ade_power_down(ctx);
-	acrtc->enable = false;
+	kcrtc->enable = false;
 }
 
 static void ade_crtc_mode_set_nofb(struct drm_crtc *crtc)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	struct drm_display_mode *mode = &crtc->state->mode;
 	struct drm_display_mode *adj_mode = &crtc->state->adjusted_mode;
 
 	if (!ctx->power_on)
 		(void)ade_power_up(ctx);
-	ade_ldi_set_mode(acrtc, mode, adj_mode);
+	ade_ldi_set_mode(ctx, mode, adj_mode);
 }
 
 static void ade_crtc_atomic_begin(struct drm_crtc *crtc,
 				  struct drm_crtc_state *old_state)
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	struct drm_display_mode *mode = &crtc->state->mode;
 	struct drm_display_mode *adj_mode = &crtc->state->adjusted_mode;
 
 	if (!ctx->power_on)
 		(void)ade_power_up(ctx);
-	ade_ldi_set_mode(acrtc, mode, adj_mode);
+	ade_ldi_set_mode(ctx, mode, adj_mode);
 }
 
 static void ade_crtc_atomic_flush(struct drm_crtc *crtc,
 				  struct drm_crtc_state *old_state)
 
 {
-	struct ade_crtc *acrtc = to_ade_crtc(crtc);
-	struct ade_hw_ctx *ctx = acrtc->ctx;
+	struct kirin_crtc *kcrtc = to_kirin_crtc(crtc);
+	struct ade_hw_ctx *ctx = kcrtc->hw_ctx;
 	struct drm_pending_vblank_event *event = crtc->state->event;
 	void __iomem *base = ctx->base;
 
 	/* only crtc is enabled regs take effect */
-	if (acrtc->enable) {
+	if (kcrtc->enable) {
 		ade_dump_regs(base);
 		/* flush ade registers */
 		writel(ADE_ENABLE, base + ADE_EN);
@@ -590,35 +564,6 @@ static const struct drm_crtc_funcs ade_crtc_funcs = {
 	.disable_vblank	= ade_crtc_disable_vblank,
 };
 
-static int ade_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
-			 struct drm_plane *plane)
-{
-	struct device_node *port;
-	int ret;
-
-	/* set crtc port so that
-	 * drm_of_find_possible_crtcs call works
-	 */
-	port = of_get_child_by_name(dev->dev->of_node, "port");
-	if (!port) {
-		DRM_ERROR("no port node found in %pOF\n", dev->dev->of_node);
-		return -EINVAL;
-	}
-	of_node_put(port);
-	crtc->port = port;
-
-	ret = drm_crtc_init_with_planes(dev, crtc, plane, NULL,
-					&ade_crtc_funcs, NULL);
-	if (ret) {
-		DRM_ERROR("failed to init crtc.\n");
-		return ret;
-	}
-
-	drm_crtc_helper_add(crtc, &ade_crtc_helper_funcs);
-
-	return 0;
-}
-
 static void ade_rdma_set(void __iomem *base, struct drm_framebuffer *fb,
 			 u32 ch, u32 y, u32 in_h, u32 fmt)
 {
@@ -780,16 +725,16 @@ static void ade_compositor_routing_disable(void __iomem *base, u32 ch)
 /*
  * Typicaly, a channel looks like: DMA-->clip-->scale-->ctrans-->compositor
  */
-static void ade_update_channel(struct ade_plane *aplane,
+static void ade_update_channel(struct kirin_plane *kplane,
 			       struct drm_framebuffer *fb, int crtc_x,
 			       int crtc_y, unsigned int crtc_w,
 			       unsigned int crtc_h, u32 src_x,
 			       u32 src_y, u32 src_w, u32 src_h)
 {
-	struct ade_hw_ctx *ctx = aplane->ctx;
+	struct ade_hw_ctx *ctx = kplane->hw_ctx;
 	void __iomem *base = ctx->base;
 	u32 fmt = ade_get_format(fb->format->format);
-	u32 ch = aplane->ch;
+	u32 ch = kplane->ch;
 	u32 in_w;
 	u32 in_h;
 
@@ -813,11 +758,11 @@ static void ade_update_channel(struct ade_plane *aplane,
 	ade_compositor_routing_set(base, ch, crtc_x, crtc_y, in_w, in_h, fmt);
 }
 
-static void ade_disable_channel(struct ade_plane *aplane)
+static void ade_disable_channel(struct kirin_plane *kplane)
 {
-	struct ade_hw_ctx *ctx = aplane->ctx;
+	struct ade_hw_ctx *ctx = kplane->hw_ctx;
 	void __iomem *base = ctx->base;
-	u32 ch = aplane->ch;
+	u32 ch = kplane->ch;
 
 	DRM_DEBUG_DRIVER("disable channel%d\n", ch + 1);
 
@@ -879,10 +824,10 @@ static int ade_plane_atomic_check(struct drm_plane *plane,
 static void ade_plane_atomic_update(struct drm_plane *plane,
 				    struct drm_plane_state *old_state)
 {
-	struct drm_plane_state	*state	= plane->state;
-	struct ade_plane *aplane = to_ade_plane(plane);
+	struct drm_plane_state *state = plane->state;
+	struct kirin_plane *kplane = to_kirin_plane(plane);
 
-	ade_update_channel(aplane, state->fb, state->crtc_x, state->crtc_y,
+	ade_update_channel(kplane, state->fb, state->crtc_x, state->crtc_y,
 			   state->crtc_w, state->crtc_h,
 			   state->src_x >> 16, state->src_y >> 16,
 			   state->src_w >> 16, state->src_h >> 16);
@@ -891,9 +836,9 @@ static void ade_plane_atomic_update(struct drm_plane *plane,
 static void ade_plane_atomic_disable(struct drm_plane *plane,
 				     struct drm_plane_state *old_state)
 {
-	struct ade_plane *aplane = to_ade_plane(plane);
+	struct kirin_plane *kplane = to_kirin_plane(plane);
 
-	ade_disable_channel(aplane);
+	ade_disable_channel(kplane);
 }
 
 static const struct drm_plane_helper_funcs ade_plane_helper_funcs = {
@@ -911,144 +856,124 @@ static struct drm_plane_funcs ade_plane_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 };
 
-static int ade_plane_init(struct drm_device *dev, struct ade_plane *aplane,
-			  enum drm_plane_type type)
-{
-	const u32 *fmts;
-	u32 fmts_cnt;
-	int ret = 0;
-
-	/* get  properties */
-	fmts_cnt = ade_get_channel_formats(aplane->ch, &fmts);
-	if (ret)
-		return ret;
-
-	ret = drm_universal_plane_init(dev, &aplane->base, 1, &ade_plane_funcs,
-				       fmts, fmts_cnt, NULL, type, NULL);
-	if (ret) {
-		DRM_ERROR("fail to init plane, ch=%d\n", aplane->ch);
-		return ret;
-	}
-
-	drm_plane_helper_add(&aplane->base, &ade_plane_helper_funcs);
-
-	return 0;
-}
-
-static int ade_dts_parse(struct platform_device *pdev, struct ade_hw_ctx *ctx)
+static void *ade_hw_ctx_alloc(struct platform_device *pdev,
+			      struct drm_crtc *crtc)
 {
 	struct resource *res;
 	struct device *dev = &pdev->dev;
 	struct device_node *np = pdev->dev.of_node;
+	struct ade_hw_ctx *ctx = NULL;
+	int ret;
+
+	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+	if (!ctx) {
+		DRM_ERROR("failed to alloc ade_hw_ctx\n");
+		return ERR_PTR(-ENOMEM);
+	}
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	ctx->base = devm_ioremap_resource(dev, res);
 	if (IS_ERR(ctx->base)) {
 		DRM_ERROR("failed to remap ade io base\n");
-		return  PTR_ERR(ctx->base);
+		return ERR_PTR(-EIO);
 	}
 
 	ctx->reset = devm_reset_control_get(dev, NULL);
 	if (IS_ERR(ctx->reset))
-		return PTR_ERR(ctx->reset);
+		return ERR_PTR(-ENODEV);
 
 	ctx->noc_regmap =
 		syscon_regmap_lookup_by_phandle(np, "hisilicon,noc-syscon");
 	if (IS_ERR(ctx->noc_regmap)) {
 		DRM_ERROR("failed to get noc regmap\n");
-		return PTR_ERR(ctx->noc_regmap);
+		return ERR_PTR(-ENODEV);
 	}
 
 	ctx->irq = platform_get_irq(pdev, 0);
 	if (ctx->irq < 0) {
 		DRM_ERROR("failed to get irq\n");
-		return -ENODEV;
+		return ERR_PTR(-ENODEV);
 	}
 
 	ctx->ade_core_clk = devm_clk_get(dev, "clk_ade_core");
 	if (IS_ERR(ctx->ade_core_clk)) {
 		DRM_ERROR("failed to parse clk ADE_CORE\n");
-		return PTR_ERR(ctx->ade_core_clk);
+		return ERR_PTR(-ENODEV);
 	}
 
 	ctx->media_noc_clk = devm_clk_get(dev, "clk_codec_jpeg");
 	if (IS_ERR(ctx->media_noc_clk)) {
 		DRM_ERROR("failed to parse clk CODEC_JPEG\n");
-		return PTR_ERR(ctx->media_noc_clk);
+		return ERR_PTR(-ENODEV);
 	}
 
 	ctx->ade_pix_clk = devm_clk_get(dev, "clk_ade_pix");
 	if (IS_ERR(ctx->ade_pix_clk)) {
 		DRM_ERROR("failed to parse clk ADE_PIX\n");
-		return PTR_ERR(ctx->ade_pix_clk);
+		return ERR_PTR(-ENODEV);
 	}
 
-	return 0;
-}
-
-static int ade_drm_init(struct platform_device *pdev)
-{
-	struct drm_device *dev = platform_get_drvdata(pdev);
-	struct ade_data *ade;
-	struct ade_hw_ctx *ctx;
-	struct ade_crtc *acrtc;
-	struct ade_plane *aplane;
-	enum drm_plane_type type;
-	int ret;
-	int i;
-
-	ade = devm_kzalloc(dev->dev, sizeof(*ade), GFP_KERNEL);
-	if (!ade) {
-		DRM_ERROR("failed to alloc ade_data\n");
-		return -ENOMEM;
-	}
-	platform_set_drvdata(pdev, ade);
-
-	ctx = &ade->ctx;
-	acrtc = &ade->acrtc;
-	acrtc->ctx = ctx;
-	acrtc->out_format = LDI_OUT_RGB_888;
-
-	ret = ade_dts_parse(pdev, ctx);
-	if (ret)
-		return ret;
-
-	/*
-	 * plane init
-	 * TODO: Now only support primary plane, overlay planes
-	 * need to do.
-	 */
-	for (i = 0; i < ADE_CH_NUM; i++) {
-		aplane = &ade->aplane[i];
-		aplane->ch = i;
-		aplane->ctx = ctx;
-		type = i == PRIMARY_CH ? DRM_PLANE_TYPE_PRIMARY :
-			DRM_PLANE_TYPE_OVERLAY;
-
-		ret = ade_plane_init(dev, aplane, type);
-		if (ret)
-			return ret;
-	}
-
-	/* crtc init */
-	ret = ade_crtc_init(dev, &acrtc->base, &ade->aplane[PRIMARY_CH].base);
-	if (ret)
-		return ret;
-
 	/* vblank irq init */
-	ret = devm_request_irq(dev->dev, ctx->irq, ade_irq_handler,
-			       IRQF_SHARED, dev->driver->name, acrtc);
+	ret = devm_request_irq(dev, ctx->irq, ade_irq_handler,
+			       IRQF_SHARED, dev->driver->name, ctx);
 	if (ret)
-		return ret;
+		return ERR_PTR(-EIO);
 
-	return 0;
+	INIT_WORK(&ctx->display_reset_wq, drm_underflow_wq);
+	ctx->crtc = crtc;
+
+	return ctx;
 }
 
-static void ade_drm_cleanup(struct platform_device *pdev)
+static void ade_hw_ctx_cleanup(void *hw_ctx)
 {
 }
 
-const struct kirin_dc_ops ade_dc_ops = {
-	.init = ade_drm_init,
-	.cleanup = ade_drm_cleanup
+static const struct drm_mode_config_funcs ade_mode_config_funcs = {
+	.fb_create = drm_gem_fb_create,
+	.atomic_check = drm_atomic_helper_check,
+	.atomic_commit = drm_atomic_helper_commit,
+
+};
+
+DEFINE_DRM_GEM_CMA_FOPS(ade_fops);
+
+static struct drm_driver ade_driver = {
+	.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
+	.fops = &ade_fops,
+	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_vm_ops = &drm_gem_cma_vm_ops,
+	.dumb_create = drm_gem_cma_dumb_create_internal,
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+	.gem_prime_vmap = drm_gem_cma_prime_vmap,
+	.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+	.gem_prime_mmap = drm_gem_cma_prime_mmap,
+
+	.name = "kirin",
+	.desc = "Hisilicon Kirin620 SoC DRM Driver",
+	.date = "20150718",
+	.major = 1,
+	.minor = 0,
+};
+
+struct kirin_drm_data ade_driver_data = {
+	.register_connects = false,
+	.num_planes = ADE_CH_NUM,
+	.prim_plane = ADE_CH1,
+	.channel_formats = channel_formats,
+	.channel_formats_cnt = ARRAY_SIZE(channel_formats),
+	.config_max_width = 2048,
+	.config_max_height = 2048,
+	.driver = &ade_driver,
+	.crtc_helper_funcs = &ade_crtc_helper_funcs,
+	.crtc_funcs = &ade_crtc_funcs,
+	.plane_helper_funcs = &ade_plane_helper_funcs,
+	.plane_funcs = &ade_plane_funcs,
+	.mode_config_funcs = &ade_mode_config_funcs,
+
+	.alloc_hw_ctx = ade_hw_ctx_alloc,
+	.cleanup_hw_ctx = ade_hw_ctx_cleanup,
 };
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
index 204c94c01e3d..d3145ae877d7 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
@@ -29,46 +29,146 @@
 
 #include "kirin_drm_drv.h"
 
-static struct kirin_dc_ops *dc_ops;
+#define KIRIN_MAX_PLANE	2
 
-static int kirin_drm_kms_cleanup(struct drm_device *dev)
+struct kirin_drm_private {
+	struct kirin_crtc crtc;
+	struct kirin_plane planes[KIRIN_MAX_PLANE];
+	void *hw_ctx;
+};
+
+static int kirin_drm_crtc_init(struct drm_device *dev, struct drm_crtc *crtc,
+			       struct drm_plane *plane,
+			       const struct kirin_drm_data *driver_data)
 {
-	drm_kms_helper_poll_fini(dev);
-	dc_ops->cleanup(to_platform_device(dev->dev));
-	drm_mode_config_cleanup(dev);
+	struct device_node *port;
+	int ret;
+
+	/* set crtc port so that
+	 * drm_of_find_possible_crtcs call works
+	 */
+	port = of_get_child_by_name(dev->dev->of_node, "port");
+	if (!port) {
+		DRM_ERROR("no port node found in %pOF\n", dev->dev->of_node);
+		return -EINVAL;
+	}
+	of_node_put(port);
+	crtc->port = port;
+
+	ret = drm_crtc_init_with_planes(dev, crtc, plane, NULL,
+					driver_data->crtc_funcs, NULL);
+	if (ret) {
+		DRM_ERROR("failed to init crtc.\n");
+		return ret;
+	}
+
+	drm_crtc_helper_add(crtc, driver_data->crtc_helper_funcs);
 
 	return 0;
 }
 
-static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
-	.fb_create = drm_gem_fb_create,
-	.atomic_check = drm_atomic_helper_check,
-	.atomic_commit = drm_atomic_helper_commit,
-};
+static int kirin_drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
+				enum drm_plane_type type,
+				const struct kirin_drm_data *data)
+{
+	int ret = 0;
+
+	ret = drm_universal_plane_init(dev, plane, 1, data->plane_funcs,
+				       data->channel_formats,
+				       data->channel_formats_cnt,
+				       NULL, type, NULL);
+	if (ret) {
+		DRM_ERROR("fail to init plane, ch=%d\n", 0);
+		return ret;
+	}
+
+	drm_plane_helper_add(plane, data->plane_helper_funcs);
 
-static void kirin_drm_mode_config_init(struct drm_device *dev)
+	return 0;
+}
+
+static void kirin_drm_private_cleanup(struct drm_device *dev)
 {
-	dev->mode_config.min_width = 0;
-	dev->mode_config.min_height = 0;
+	struct kirin_drm_private *kirin_priv = dev->dev_private;
+	struct kirin_drm_data *data;
 
-	dev->mode_config.max_width = 2048;
-	dev->mode_config.max_height = 2048;
+	data = (struct kirin_drm_data *)of_device_get_match_data(dev->dev);
+	if (data->cleanup_hw_ctx)
+		data->cleanup_hw_ctx(kirin_priv->hw_ctx);
 
-	dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
+	devm_kfree(dev->dev, kirin_priv);
+	dev->dev_private = NULL;
 }
 
-static int kirin_drm_kms_init(struct drm_device *dev)
+static int kirin_drm_private_init(struct drm_device *dev,
+				  const struct kirin_drm_data *driver_data)
 {
+	struct platform_device *pdev = to_platform_device(dev->dev);
+	struct kirin_drm_private *kirin_priv;
+	struct drm_plane *prim_plane;
+	enum drm_plane_type type;
+	void *ctx;
 	int ret;
+	u32 ch;
+
+	kirin_priv = devm_kzalloc(dev->dev, sizeof(*kirin_priv), GFP_KERNEL);
+	if (!kirin_priv) {
+		DRM_ERROR("failed to alloc kirin_drm_private\n");
+		return -ENOMEM;
+	}
+
+	ctx = driver_data->alloc_hw_ctx(pdev, &kirin_priv->crtc.base);
+	if (IS_ERR(ctx)) {
+		DRM_ERROR("failed to initialize kirin_priv hw ctx\n");
+		return -EINVAL;
+	}
+	kirin_priv->hw_ctx = ctx;
+
+	/*
+	 * plane init
+	 * TODO: Now only support primary plane, overlay planes
+	 * need to do.
+	 */
+	for (ch = 0; ch < driver_data->num_planes; ch++) {
+		if (ch == driver_data->prim_plane)
+			type = DRM_PLANE_TYPE_PRIMARY;
+		else
+			type = DRM_PLANE_TYPE_OVERLAY;
+		ret = kirin_drm_plane_init(dev, &kirin_priv->planes[ch].base,
+					   type, driver_data);
+		if (ret)
+			return ret;
+		kirin_priv->planes[ch].ch = ch;
+		kirin_priv->planes[ch].hw_ctx = ctx;
+	}
 
-	dev_set_drvdata(dev->dev, dev);
+	/* crtc init */
+	prim_plane = &kirin_priv->planes[driver_data->prim_plane].base;
+	ret = kirin_drm_crtc_init(dev, &kirin_priv->crtc.base,
+				  prim_plane, driver_data);
+	if (ret)
+		return ret;
+	kirin_priv->crtc.hw_ctx = ctx;
+	dev->dev_private = kirin_priv;
+
+	return 0;
+}
+
+static int kirin_drm_kms_init(struct drm_device *dev,
+			      const struct kirin_drm_data *driver_data)
+{
+	int ret;
 
 	/* dev->mode_config initialization */
 	drm_mode_config_init(dev);
-	kirin_drm_mode_config_init(dev);
+	dev->mode_config.min_width = 0;
+	dev->mode_config.min_height = 0;
+	dev->mode_config.max_width = driver_data->config_max_width;
+	dev->mode_config.max_height = driver_data->config_max_width;
+	dev->mode_config.funcs = driver_data->mode_config_funcs;
 
 	/* display controller init */
-	ret = dc_ops->init(to_platform_device(dev->dev));
+	ret = kirin_drm_private_init(dev, driver_data);
 	if (ret)
 		goto err_mode_config_cleanup;
 
@@ -76,7 +176,7 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 	ret = component_bind_all(dev->dev, dev);
 	if (ret) {
 		DRM_ERROR("failed to bind all component.\n");
-		goto err_dc_cleanup;
+		goto err_private_cleanup;
 	}
 
 	/* vblank init */
@@ -98,62 +198,78 @@ static int kirin_drm_kms_init(struct drm_device *dev)
 
 err_unbind_all:
 	component_unbind_all(dev->dev, dev);
-err_dc_cleanup:
-	dc_ops->cleanup(to_platform_device(dev->dev));
+err_private_cleanup:
+	kirin_drm_private_cleanup(dev);
 err_mode_config_cleanup:
 	drm_mode_config_cleanup(dev);
-
 	return ret;
 }
 
-DEFINE_DRM_GEM_CMA_FOPS(kirin_drm_fops);
-
-static int kirin_gem_cma_dumb_create(struct drm_file *file,
-				     struct drm_device *dev,
-				     struct drm_mode_create_dumb *args)
+static int compare_of(struct device *dev, void *data)
 {
-	return drm_gem_cma_dumb_create_internal(file, dev, args);
+	return dev->of_node == data;
 }
 
-static struct drm_driver kirin_drm_driver = {
-	.driver_features	= DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
-	.fops			= &kirin_drm_fops,
-
-	.gem_free_object_unlocked = drm_gem_cma_free_object,
-	.gem_vm_ops		= &drm_gem_cma_vm_ops,
-	.dumb_create		= kirin_gem_cma_dumb_create,
-
-	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
-	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
-	.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
-	.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
-	.gem_prime_vmap		= drm_gem_cma_prime_vmap,
-	.gem_prime_vunmap	= drm_gem_cma_prime_vunmap,
-	.gem_prime_mmap		= drm_gem_cma_prime_mmap,
-
-	.name			= "kirin",
-	.desc			= "Hisilicon Kirin SoCs' DRM Driver",
-	.date			= "20150718",
-	.major			= 1,
-	.minor			= 0,
-};
+static int kirin_drm_kms_cleanup(struct drm_device *dev)
+{
+	drm_kms_helper_poll_fini(dev);
+	kirin_drm_private_cleanup(dev);
+	drm_mode_config_cleanup(dev);
 
-static int compare_of(struct device *dev, void *data)
+	return 0;
+}
+
+static int kirin_drm_connectors_register(struct drm_device *dev)
 {
-	return dev->of_node == data;
+	struct drm_connector *connector;
+	struct drm_connector *failed_connector;
+	struct drm_connector_list_iter conn_iter;
+	int ret;
+
+	mutex_lock(&dev->mode_config.mutex);
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		ret = drm_connector_register(connector);
+		if (ret) {
+			failed_connector = connector;
+			goto err;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	return 0;
+
+err:
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		if (failed_connector == connector)
+			break;
+		drm_connector_unregister(connector);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+	mutex_unlock(&dev->mode_config.mutex);
+
+	return ret;
 }
 
 static int kirin_drm_bind(struct device *dev)
 {
-	struct drm_driver *driver = &kirin_drm_driver;
+	struct kirin_drm_data *driver_data;
 	struct drm_device *drm_dev;
 	int ret;
 
-	drm_dev = drm_dev_alloc(driver, dev);
+	driver_data = (struct kirin_drm_data *)of_device_get_match_data(dev);
+	if (!driver_data)
+		return -EINVAL;
+
+	drm_dev = drm_dev_alloc(driver_data->driver, dev);
 	if (IS_ERR(drm_dev))
 		return PTR_ERR(drm_dev);
+	dev_set_drvdata(dev, drm_dev);
 
-	ret = kirin_drm_kms_init(drm_dev);
+	/* display controller init */
+	ret = kirin_drm_kms_init(drm_dev, driver_data);
 	if (ret)
 		goto err_drm_dev_put;
 
@@ -163,8 +279,17 @@ static int kirin_drm_bind(struct device *dev)
 
 	drm_fbdev_generic_setup(drm_dev, 32);
 
+	/* connectors should be registered after drm device register */
+	if (driver_data->register_connects) {
+		ret = kirin_drm_connectors_register(drm_dev);
+		if (ret)
+			goto err_drm_dev_unregister;
+	}
+
 	return 0;
 
+err_drm_dev_unregister:
+	drm_dev_unregister(drm_dev);
 err_kms_cleanup:
 	kirin_drm_kms_cleanup(drm_dev);
 err_drm_dev_put:
@@ -194,12 +319,6 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
 	struct component_match *match = NULL;
 	struct device_node *remote;
 
-	dc_ops = (struct kirin_dc_ops *)of_device_get_match_data(dev);
-	if (!dc_ops) {
-		DRM_ERROR("failed to get dt id data\n");
-		return -EINVAL;
-	}
-
 	remote = of_graph_get_remote_node(np, 0, 0);
 	if (!remote)
 		return -ENODEV;
@@ -208,20 +327,17 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
 	of_node_put(remote);
 
 	return component_master_add_with_match(dev, &kirin_drm_ops, match);
-
-	return 0;
 }
 
 static int kirin_drm_platform_remove(struct platform_device *pdev)
 {
 	component_master_del(&pdev->dev, &kirin_drm_ops);
-	dc_ops = NULL;
 	return 0;
 }
 
 static const struct of_device_id kirin_drm_dt_ids[] = {
 	{ .compatible = "hisilicon,hi6220-ade",
-	  .data = &ade_dc_ops,
+	  .data = &ade_driver_data,
 	},
 	{ /* end node */ },
 };
diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
index 22d1291668cd..4d5c05a24065 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
@@ -7,14 +7,52 @@
 #ifndef __KIRIN_DRM_DRV_H__
 #define __KIRIN_DRM_DRV_H__
 
-#define MAX_CRTC	2
+#define to_kirin_crtc(crtc) \
+	container_of(crtc, struct kirin_crtc, base)
+
+#define to_kirin_plane(plane) \
+	container_of(plane, struct kirin_plane, base)
+
+/* kirin-format translate table */
+struct kirin_format {
+	u32 pixel_format;
+	u32 hw_format;
+};
+
+struct kirin_crtc {
+	struct drm_crtc base;
+	void *hw_ctx;
+	bool enable;
+};
+
+struct kirin_plane {
+	struct drm_plane base;
+	void *hw_ctx;
+	u32 ch;
+};
 
 /* display controller init/cleanup ops */
-struct kirin_dc_ops {
-	int (*init)(struct platform_device *pdev);
-	void (*cleanup)(struct platform_device *pdev);
+struct kirin_drm_data {
+	const u32 *channel_formats;
+	u32 channel_formats_cnt;
+	int config_max_width;
+	int config_max_height;
+	bool register_connects;
+	u32 num_planes;
+	u32 prim_plane;
+
+	struct drm_driver *driver;
+	const struct drm_crtc_helper_funcs *crtc_helper_funcs;
+	const struct drm_crtc_funcs *crtc_funcs;
+	const struct drm_plane_helper_funcs *plane_helper_funcs;
+	const struct drm_plane_funcs  *plane_funcs;
+	const struct drm_mode_config_funcs *mode_config_funcs;
+
+	void *(*alloc_hw_ctx)(struct platform_device *pdev,
+			      struct drm_crtc *crtc);
+	void (*cleanup_hw_ctx)(void *hw_ctx);
 };
 
-extern const struct kirin_dc_ops ade_dc_ops;
+extern struct kirin_drm_data ade_driver_data;
 
 #endif /* __KIRIN_DRM_DRV_H__ */
diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug
index 87a38c6aaa41..00786a142ff0 100644
--- a/drivers/gpu/drm/i915/Kconfig.debug
+++ b/drivers/gpu/drm/i915/Kconfig.debug
@@ -30,6 +30,7 @@ config DRM_I915_DEBUG
         select DRM_VGEM # used by igt/prime_vgem (dmabuf interop checks)
         select DRM_DEBUG_MM if DRM=y
 	select DRM_DEBUG_SELFTEST
+	select DMABUF_SELFTESTS
 	select SW_SYNC # signaling validation framework (igt/syncobj*)
 	select DRM_I915_SW_FENCE_DEBUG_OBJECTS
 	select DRM_I915_SELFTEST
diff --git a/drivers/gpu/drm/meson/meson_crtc.c b/drivers/gpu/drm/meson/meson_crtc.c
index bba25325aa9c..57ae1c13d1e6 100644
--- a/drivers/gpu/drm/meson/meson_crtc.c
+++ b/drivers/gpu/drm/meson/meson_crtc.c
@@ -575,7 +575,7 @@ int meson_crtc_create(struct meson_drm *priv)
 		return ret;
 	}
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		meson_crtc->enable_osd1 = meson_g12a_crtc_enable_osd1;
 		meson_crtc->enable_vd1 = meson_g12a_crtc_enable_vd1;
 		meson_crtc->viu_offset = MESON_G12A_VIU_OFFSET;
diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
index ae0166181606..a24f8dec5adc 100644
--- a/drivers/gpu/drm/meson/meson_drv.c
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -209,6 +209,8 @@ static int meson_drv_bind_master(struct device *dev, bool has_components)
 	priv->drm = drm;
 	priv->dev = dev;
 
+	priv->compat = (enum vpu_compatible)of_device_get_match_data(priv->dev);
+
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
 	regs = devm_ioremap_resource(dev, res);
 	if (IS_ERR(regs)) {
@@ -453,10 +455,14 @@ static int meson_drv_probe(struct platform_device *pdev)
 };
 
 static const struct of_device_id dt_match[] = {
-	{ .compatible = "amlogic,meson-gxbb-vpu" },
-	{ .compatible = "amlogic,meson-gxl-vpu" },
-	{ .compatible = "amlogic,meson-gxm-vpu" },
-	{ .compatible = "amlogic,meson-g12a-vpu" },
+	{ .compatible = "amlogic,meson-gxbb-vpu",
+	  .data       = (void *)VPU_COMPATIBLE_GXBB },
+	{ .compatible = "amlogic,meson-gxl-vpu",
+	  .data       = (void *)VPU_COMPATIBLE_GXL },
+	{ .compatible = "amlogic,meson-gxm-vpu",
+	  .data       = (void *)VPU_COMPATIBLE_GXM },
+	{ .compatible = "amlogic,meson-g12a-vpu",
+	  .data       = (void *)VPU_COMPATIBLE_G12A },
 	{}
 };
 MODULE_DEVICE_TABLE(of, dt_match);
diff --git a/drivers/gpu/drm/meson/meson_drv.h b/drivers/gpu/drm/meson/meson_drv.h
index c9aaec1a846e..820d07bdd42a 100644
--- a/drivers/gpu/drm/meson/meson_drv.h
+++ b/drivers/gpu/drm/meson/meson_drv.h
@@ -9,6 +9,7 @@
 
 #include <linux/device.h>
 #include <linux/of.h>
+#include <linux/of_device.h>
 #include <linux/regmap.h>
 
 struct drm_crtc;
@@ -16,8 +17,16 @@ struct drm_device;
 struct drm_plane;
 struct meson_drm;
 
+enum vpu_compatible {
+	VPU_COMPATIBLE_GXBB = 0,
+	VPU_COMPATIBLE_GXL  = 1,
+	VPU_COMPATIBLE_GXM  = 2,
+	VPU_COMPATIBLE_G12A = 3,
+};
+
 struct meson_drm {
 	struct device *dev;
+	enum vpu_compatible compat;
 	void __iomem *io_base;
 	struct regmap *hhi;
 	int vsync_irq;
@@ -116,9 +125,9 @@ struct meson_drm {
 };
 
 static inline int meson_vpu_is_compatible(struct meson_drm *priv,
-					  const char *compat)
+					  enum vpu_compatible family)
 {
-	return of_device_is_compatible(priv->dev->of_node, compat);
+	return priv->compat == family;
 }
 
 #endif /* __MESON_DRV_H */
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index f893ebd0b799..68bbd987147b 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -937,7 +937,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
 	reset_control_reset(meson_dw_hdmi->hdmitx_phy);
 
 	/* Enable APB3 fail on error */
-	if (!meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (!meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		writel_bits_relaxed(BIT(15), BIT(15),
 				    meson_dw_hdmi->hdmitx + HDMITX_TOP_CTRL_REG);
 		writel_bits_relaxed(BIT(15), BIT(15),
diff --git a/drivers/gpu/drm/meson/meson_overlay.c b/drivers/gpu/drm/meson/meson_overlay.c
index 5aa9dcb4b35e..2468b0212d52 100644
--- a/drivers/gpu/drm/meson/meson_overlay.c
+++ b/drivers/gpu/drm/meson/meson_overlay.c
@@ -513,7 +513,7 @@ static void meson_overlay_atomic_disable(struct drm_plane *plane,
 	priv->viu.vd1_enabled = false;
 
 	/* Disable VD1 */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		writel_relaxed(0, priv->io_base + _REG(VD1_BLEND_SRC_CTRL));
 		writel_relaxed(0, priv->io_base + _REG(VD2_BLEND_SRC_CTRL));
 		writel_relaxed(0, priv->io_base + _REG(VD1_IF0_GEN_REG + 0x17b0));
diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c
index b9e1e117fb85..ed543227b00d 100644
--- a/drivers/gpu/drm/meson/meson_plane.c
+++ b/drivers/gpu/drm/meson/meson_plane.c
@@ -138,7 +138,7 @@ static void meson_plane_atomic_update(struct drm_plane *plane,
 				      OSD_ENDIANNESS_LE);
 
 	/* On GXBB, Use the old non-HDR RGB2YUV converter */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
 		priv->viu.osd1_blk0_cfg[0] |= OSD_OUTPUT_COLOR_RGB;
 
 	switch (fb->format->format) {
@@ -292,7 +292,7 @@ static void meson_plane_atomic_update(struct drm_plane *plane,
 	priv->viu.osd1_blk0_cfg[3] = ((dest.x2 - 1) << 16) | dest.x1;
 	priv->viu.osd1_blk0_cfg[4] = ((dest.y2 - 1) << 16) | dest.y1;
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		priv->viu.osd_blend_din0_scope_h = ((dest.x2 - 1) << 16) | dest.x1;
 		priv->viu.osd_blend_din0_scope_v = ((dest.y2 - 1) << 16) | dest.y1;
 		priv->viu.osb_blend0_size = dst_h << 16 | dst_w;
@@ -308,8 +308,8 @@ static void meson_plane_atomic_update(struct drm_plane *plane,
 
 	if (!meson_plane->enabled) {
 		/* Reset OSD1 before enabling it on GXL+ SoCs */
-		if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+		if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		    meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 			meson_viu_osd1_reset(priv);
 
 		meson_plane->enabled = true;
@@ -327,7 +327,7 @@ static void meson_plane_atomic_disable(struct drm_plane *plane,
 	struct meson_drm *priv = meson_plane->priv;
 
 	/* Disable OSD1 */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		writel_bits_relaxed(VIU_OSD1_POSTBLD_SRC_OSD1, 0,
 				    priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
 	else
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index 869231c93617..ac491a781952 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -242,7 +242,7 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
 	unsigned int val;
 
 	/* Setup PLL to output 1.485GHz */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x5800023d);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00404e00);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x0d5c5091);
@@ -254,8 +254,8 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
 		/* Poll for lock bit */
 		regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
 					 (val & HDMI_PLL_LOCK), 10, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		   meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		   meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x4000027b);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb300);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0xa6212844);
@@ -272,7 +272,7 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
 		/* Poll for lock bit */
 		regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
 					 (val & HDMI_PLL_LOCK), 10, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x1a0504f7);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x00010000);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x00000000);
@@ -300,7 +300,7 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
 				VCLK2_DIV_MASK, (55 - 1));
 
 	/* select vid_pll for vclk2 */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		regmap_update_bits(priv->hhi, HHI_VIID_CLK_CNTL,
 					VCLK2_SEL_MASK, (0 << VCLK2_SEL_SHIFT));
 	else
@@ -455,7 +455,7 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
 {
 	unsigned int val;
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x58000200 | m);
 		if (frac)
 			regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2,
@@ -475,8 +475,8 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
 		/* Poll for lock bit */
 		regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL,
 					 val, (val & HDMI_PLL_LOCK), 10, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		   meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		   meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x40000200 | m);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL2, 0x800cb000 | frac);
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL3, 0x860f30c4);
@@ -493,7 +493,7 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
 		/* Poll for lock bit */
 		regmap_read_poll_timeout(priv->hhi, HHI_HDMI_PLL_CNTL, val,
 				(val & HDMI_PLL_LOCK), 10, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		regmap_write(priv->hhi, HHI_HDMI_PLL_CNTL, 0x0b3a0400 | m);
 
 		/* Enable and reset */
@@ -545,36 +545,36 @@ void meson_hdmi_pll_set_params(struct meson_drm *priv, unsigned int m,
 		} while(1);
 	}
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 				3 << 16, pll_od_to_reg(od1) << 16);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		 meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 				3 << 21, pll_od_to_reg(od1) << 21);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 				3 << 16, pll_od_to_reg(od1) << 16);
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 				3 << 22, pll_od_to_reg(od2) << 22);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		 meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 				3 << 23, pll_od_to_reg(od2) << 23);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 				3 << 18, pll_od_to_reg(od2) << 18);
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL2,
 				3 << 18, pll_od_to_reg(od3) << 18);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		 meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL3,
 				3 << 19, pll_od_to_reg(od3) << 19);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		regmap_update_bits(priv->hhi, HHI_HDMI_PLL_CNTL,
 				3 << 20, pll_od_to_reg(od3) << 20);
 }
@@ -585,7 +585,7 @@ static unsigned int meson_hdmi_pll_get_m(struct meson_drm *priv,
 					 unsigned int pll_freq)
 {
 	/* The GXBB PLL has a /2 pre-multiplier */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB))
 		pll_freq /= 2;
 
 	return pll_freq / XTAL_FREQ;
@@ -605,12 +605,12 @@ static unsigned int meson_hdmi_pll_get_frac(struct meson_drm *priv,
 	unsigned int frac;
 
 	/* The GXBB PLL has a /2 pre-multiplier and a larger FRAC width */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		frac_max = HDMI_FRAC_MAX_GXBB;
 		parent_freq *= 2;
 	}
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		frac_max = HDMI_FRAC_MAX_G12A;
 
 	/* We can have a perfect match !*/
@@ -631,15 +631,15 @@ static bool meson_hdmi_pll_validate_params(struct meson_drm *priv,
 					   unsigned int m,
 					   unsigned int frac)
 {
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		/* Empiric supported min/max dividers */
 		if (m < 53 || m > 123)
 			return false;
 		if (frac >= HDMI_FRAC_MAX_GXBB)
 			return false;
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		   meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu") ||
-		   meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		   meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL) ||
+		   meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		/* Empiric supported min/max dividers */
 		if (m < 106 || m > 247)
 			return false;
@@ -759,7 +759,7 @@ static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
 	/* Set HDMI PLL rate */
 	if (!od1 && !od2 && !od3) {
 		meson_hdmi_pll_generic_set(priv, pll_base_freq);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		switch (pll_base_freq) {
 		case 2970000:
 			m = 0x3d;
@@ -776,8 +776,8 @@ static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
 		}
 
 		meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		   meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		   meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
 		switch (pll_base_freq) {
 		case 2970000:
 			m = 0x7b;
@@ -794,7 +794,7 @@ static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
 		}
 
 		meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		switch (pll_base_freq) {
 		case 2970000:
 			m = 0x7b;
diff --git a/drivers/gpu/drm/meson/meson_venc.c b/drivers/gpu/drm/meson/meson_venc.c
index 679d2274531c..4efd7864d5bf 100644
--- a/drivers/gpu/drm/meson/meson_venc.c
+++ b/drivers/gpu/drm/meson/meson_venc.c
@@ -1759,7 +1759,7 @@ void meson_venc_disable_vsync(struct meson_drm *priv)
 void meson_venc_init(struct meson_drm *priv)
 {
 	/* Disable CVBS VDAC */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0);
 		regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 8);
 	} else {
diff --git a/drivers/gpu/drm/meson/meson_venc_cvbs.c b/drivers/gpu/drm/meson/meson_venc_cvbs.c
index 6dc130a24070..9ab27aecfcf3 100644
--- a/drivers/gpu/drm/meson/meson_venc_cvbs.c
+++ b/drivers/gpu/drm/meson/meson_venc_cvbs.c
@@ -155,7 +155,7 @@ static void meson_venc_cvbs_encoder_disable(struct drm_encoder *encoder)
 	struct meson_drm *priv = meson_venc_cvbs->priv;
 
 	/* Disable CVBS VDAC */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0);
 		regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
 	} else {
@@ -174,14 +174,14 @@ static void meson_venc_cvbs_encoder_enable(struct drm_encoder *encoder)
 	writel_bits_relaxed(VENC_VDAC_SEL_ATV_DMD, 0,
 			    priv->io_base + _REG(VENC_VDAC_DACSEL0));
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXBB)) {
 		regmap_write(priv->hhi, HHI_VDAC_CNTL0, 1);
 		regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-		 meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+		 meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL)) {
 		regmap_write(priv->hhi, HHI_VDAC_CNTL0, 0xf0001);
 		regmap_write(priv->hhi, HHI_VDAC_CNTL1, 0);
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		regmap_write(priv->hhi, HHI_VDAC_CNTL0_G12A, 0x906001);
 		regmap_write(priv->hhi, HHI_VDAC_CNTL1_G12A, 0);
 	}
diff --git a/drivers/gpu/drm/meson/meson_viu.c b/drivers/gpu/drm/meson/meson_viu.c
index e70cd55d56c9..68cf2c2eca5f 100644
--- a/drivers/gpu/drm/meson/meson_viu.c
+++ b/drivers/gpu/drm/meson/meson_viu.c
@@ -353,10 +353,10 @@ void meson_viu_init(struct meson_drm *priv)
 			    priv->io_base + _REG(VIU_OSD2_CTRL_STAT));
 
 	/* On GXL/GXM, Use the 10bit HDR conversion matrix */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
-	    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM) ||
+	    meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 		meson_viu_load_matrix(priv);
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		meson_viu_set_g12a_osd1_matrix(priv, RGB709_to_YUV709l_coeff,
 					       true);
 
@@ -367,7 +367,7 @@ void meson_viu_init(struct meson_drm *priv)
 		VIU_OSD_WORDS_PER_BURST(4) | /* 4 words in 1 burst */
 		VIU_OSD_FIFO_LIMITS(2);      /* fifo_lim: 2*16=32 */
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		reg |= meson_viu_osd_burst_length_reg(32);
 	else
 		reg |= meson_viu_osd_burst_length_reg(64);
@@ -394,7 +394,7 @@ void meson_viu_init(struct meson_drm *priv)
 	writel_relaxed(0x00FF00C0,
 			priv->io_base + _REG(VD2_IF0_LUMA_FIFO_SIZE));
 
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		writel_relaxed(VIU_OSD_BLEND_REORDER(0, 1) |
 			       VIU_OSD_BLEND_REORDER(1, 0) |
 			       VIU_OSD_BLEND_REORDER(2, 0) |
diff --git a/drivers/gpu/drm/meson/meson_vpp.c b/drivers/gpu/drm/meson/meson_vpp.c
index 1429f3be6028..154837688ab0 100644
--- a/drivers/gpu/drm/meson/meson_vpp.c
+++ b/drivers/gpu/drm/meson/meson_vpp.c
@@ -91,20 +91,20 @@ static void meson_vpp_write_vd_scaling_filter_coefs(struct meson_drm *priv,
 void meson_vpp_init(struct meson_drm *priv)
 {
 	/* set dummy data default YUV black */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXL))
 		writel_relaxed(0x108080, priv->io_base + _REG(VPP_DUMMY_DATA1));
-	else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu")) {
+	else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_GXM)) {
 		writel_bits_relaxed(0xff << 16, 0xff << 16,
 				    priv->io_base + _REG(VIU_MISC_CTRL1));
 		writel_relaxed(VPP_PPS_DUMMY_DATA_MODE,
 			       priv->io_base + _REG(VPP_DOLBY_CTRL));
 		writel_relaxed(0x1020080,
 				priv->io_base + _REG(VPP_DUMMY_DATA1));
-	} else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	} else if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		writel_relaxed(0xf, priv->io_base + _REG(DOLBY_PATH_CTRL));
 
 	/* Initialize vpu fifo control registers */
-	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
+	if (meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A))
 		writel_relaxed(VPP_OFIFO_SIZE_DEFAULT,
 			       priv->io_base + _REG(VPP_OFIFO_SIZE));
 	else
@@ -113,7 +113,7 @@ void meson_vpp_init(struct meson_drm *priv)
 	writel_relaxed(VPP_POSTBLEND_HOLD_LINES(4) | VPP_PREBLEND_HOLD_LINES(4),
 		       priv->io_base + _REG(VPP_HOLD_LINES));
 
-	if (!meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
+	if (!meson_vpu_is_compatible(priv, VPU_COMPATIBLE_G12A)) {
 		/* Turn off preblend */
 		writel_bits_relaxed(VPP_PREBLEND_ENABLE, 0,
 				    priv->io_base + _REG(VPP_MISC));
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c
index e0b1bbee936f..e918b437af17 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
@@ -185,31 +185,24 @@ nouveau_bo_fixup_align(struct nouveau_bo *nvbo, u32 flags,
 	*size = roundup_64(*size, PAGE_SIZE);
 }
 
-int
-nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
-	       uint32_t flags, uint32_t tile_mode, uint32_t tile_flags,
-	       struct sg_table *sg, struct dma_resv *robj,
-	       struct nouveau_bo **pnvbo)
+struct nouveau_bo *
+nouveau_bo_alloc(struct nouveau_cli *cli, u64 size, u32 flags, u32 tile_mode,
+		 u32 tile_flags)
 {
 	struct nouveau_drm *drm = cli->drm;
 	struct nouveau_bo *nvbo;
 	struct nvif_mmu *mmu = &cli->mmu;
 	struct nvif_vmm *vmm = cli->svm.cli ? &cli->svm.vmm : &cli->vmm.vmm;
-	size_t acc_size;
-	int type = ttm_bo_type_device;
-	int ret, i, pi = -1;
+	int i, pi = -1;
 
 	if (!size) {
 		NV_WARN(drm, "skipped size %016llx\n", size);
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 	}
 
-	if (sg)
-		type = ttm_bo_type_sg;
-
 	nvbo = kzalloc(sizeof(struct nouveau_bo), GFP_KERNEL);
 	if (!nvbo)
-		return -ENOMEM;
+		return ERR_PTR(-ENOMEM);
 	INIT_LIST_HEAD(&nvbo->head);
 	INIT_LIST_HEAD(&nvbo->entry);
 	INIT_LIST_HEAD(&nvbo->vma_list);
@@ -231,7 +224,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
 		nvbo->kind = (tile_flags & 0x0000ff00) >> 8;
 		if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
 			kfree(nvbo);
-			return -EINVAL;
+			return ERR_PTR(-EINVAL);
 		}
 
 		nvbo->comp = mmu->kind[nvbo->kind] != nvbo->kind;
@@ -241,7 +234,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
 		nvbo->comp = (tile_flags & 0x00030000) >> 16;
 		if (!nvif_mmu_kind_valid(mmu, nvbo->kind)) {
 			kfree(nvbo);
-			return -EINVAL;
+			return ERR_PTR(-EINVAL);
 		}
 	} else {
 		nvbo->zeta = (tile_flags & 0x00000007);
@@ -278,7 +271,7 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
 	}
 
 	if (WARN_ON(pi < 0))
-		return -EINVAL;
+		return ERR_PTR(-EINVAL);
 
 	/* Disable compression if suitable settings couldn't be found. */
 	if (nvbo->comp && !vmm->page[pi].comp) {
@@ -288,23 +281,51 @@ nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
 	}
 	nvbo->page = vmm->page[pi].shift;
 
+	return nvbo;
+}
+
+int
+nouveau_bo_init(struct nouveau_bo *nvbo, u64 size, int align, u32 flags,
+		struct sg_table *sg, struct dma_resv *robj)
+{
+	int type = sg ? ttm_bo_type_sg : ttm_bo_type_device;
+	size_t acc_size;
+	int ret;
+
+	acc_size = ttm_bo_dma_acc_size(nvbo->bo.bdev, size, sizeof(*nvbo));
+
 	nouveau_bo_fixup_align(nvbo, flags, &align, &size);
 	nvbo->bo.mem.num_pages = size >> PAGE_SHIFT;
 	nouveau_bo_placement_set(nvbo, flags, 0);
 
-	acc_size = ttm_bo_dma_acc_size(&drm->ttm.bdev, size,
-				       sizeof(struct nouveau_bo));
-
-	ret = ttm_bo_init(&drm->ttm.bdev, &nvbo->bo, size,
-			  type, &nvbo->placement,
-			  align >> PAGE_SHIFT, false, acc_size, sg,
-			  robj, nouveau_bo_del_ttm);
-
+	ret = ttm_bo_init(nvbo->bo.bdev, &nvbo->bo, size, type,
+			  &nvbo->placement, align >> PAGE_SHIFT, false,
+			  acc_size, sg, robj, nouveau_bo_del_ttm);
 	if (ret) {
 		/* ttm will call nouveau_bo_del_ttm if it fails.. */
 		return ret;
 	}
 
+	return 0;
+}
+
+int
+nouveau_bo_new(struct nouveau_cli *cli, u64 size, int align,
+	       uint32_t flags, uint32_t tile_mode, uint32_t tile_flags,
+	       struct sg_table *sg, struct dma_resv *robj,
+	       struct nouveau_bo **pnvbo)
+{
+	struct nouveau_bo *nvbo;
+	int ret;
+
+	nvbo = nouveau_bo_alloc(cli, size, flags, tile_mode, tile_flags);
+	if (IS_ERR(nvbo))
+		return PTR_ERR(nvbo);
+
+	ret = nouveau_bo_init(nvbo, size, align, flags, sg, robj);
+	if (ret)
+		return ret;
+
 	*pnvbo = nvbo;
 	return 0;
 }
diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h
index 3ae84834bd5c..62930d834fba 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bo.h
+++ b/drivers/gpu/drm/nouveau/nouveau_bo.h
@@ -71,6 +71,10 @@ nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo)
 extern struct ttm_bo_driver nouveau_bo_driver;
 
 void nouveau_bo_move_init(struct nouveau_drm *);
+struct nouveau_bo *nouveau_bo_alloc(struct nouveau_cli *, u64 size, u32 flags,
+				    u32 tile_mode, u32 tile_flags);
+int  nouveau_bo_init(struct nouveau_bo *, u64 size, int align, u32 flags,
+		     struct sg_table *sg, struct dma_resv *robj);
 int  nouveau_bo_new(struct nouveau_cli *, u64 size, int align, u32 flags,
 		    u32 tile_mode, u32 tile_flags, struct sg_table *sg,
 		    struct dma_resv *robj,
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c
index c77302f969e8..c2bfc0591909 100644
--- a/drivers/gpu/drm/nouveau/nouveau_gem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_gem.c
@@ -188,11 +188,23 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 	if (domain & NOUVEAU_GEM_DOMAIN_COHERENT)
 		flags |= TTM_PL_FLAG_UNCACHED;
 
-	ret = nouveau_bo_new(cli, size, align, flags, tile_mode,
-			     tile_flags, NULL, NULL, pnvbo);
-	if (ret)
+	nvbo = nouveau_bo_alloc(cli, size, flags, tile_mode, tile_flags);
+	if (IS_ERR(nvbo))
+		return PTR_ERR(nvbo);
+
+	/* Initialize the embedded gem-object. We return a single gem-reference
+	 * to the caller, instead of a normal nouveau_bo ttm reference. */
+	ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, size);
+	if (ret) {
+		nouveau_bo_ref(NULL, &nvbo);
+		return ret;
+	}
+
+	ret = nouveau_bo_init(nvbo, size, align, flags, NULL, NULL);
+	if (ret) {
+		nouveau_bo_ref(NULL, &nvbo);
 		return ret;
-	nvbo = *pnvbo;
+	}
 
 	/* we restrict allowed domains on nv50+ to only the types
 	 * that were requested at creation time.  not possibly on
@@ -203,15 +215,8 @@ nouveau_gem_new(struct nouveau_cli *cli, u64 size, int align, uint32_t domain,
 	if (drm->client.device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 		nvbo->valid_domains &= domain;
 
-	/* Initialize the embedded gem-object. We return a single gem-reference
-	 * to the caller, instead of a normal nouveau_bo ttm reference. */
-	ret = drm_gem_object_init(drm->dev, &nvbo->bo.base, nvbo->bo.mem.size);
-	if (ret) {
-		nouveau_bo_ref(NULL, pnvbo);
-		return -ENOMEM;
-	}
-
 	nvbo->bo.persistent_swap_storage = nvbo->bo.base.filp;
+	*pnvbo = nvbo;
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c
index 6a222cdf2935..84658d434225 100644
--- a/drivers/gpu/drm/nouveau/nouveau_prime.c
+++ b/drivers/gpu/drm/nouveau/nouveau_prime.c
@@ -62,28 +62,34 @@ struct drm_gem_object *nouveau_gem_prime_import_sg_table(struct drm_device *dev,
 	struct nouveau_drm *drm = nouveau_drm(dev);
 	struct nouveau_bo *nvbo;
 	struct dma_resv *robj = attach->dmabuf->resv;
+	size_t size = attach->dmabuf->size;
 	u32 flags = 0;
 	int ret;
 
 	flags = TTM_PL_FLAG_TT;
 
 	dma_resv_lock(robj, NULL);
-	ret = nouveau_bo_new(&drm->client, attach->dmabuf->size, 0, flags, 0, 0,
-			     sg, robj, &nvbo);
+	nvbo = nouveau_bo_alloc(&drm->client, size, flags, 0, 0);
 	dma_resv_unlock(robj);
-	if (ret)
-		return ERR_PTR(ret);
+	if (IS_ERR(nvbo))
+		return ERR_CAST(nvbo);
 
 	nvbo->valid_domains = NOUVEAU_GEM_DOMAIN_GART;
 
 	/* Initialize the embedded gem-object. We return a single gem-reference
 	 * to the caller, instead of a normal nouveau_bo ttm reference. */
-	ret = drm_gem_object_init(dev, &nvbo->bo.base, nvbo->bo.mem.size);
+	ret = drm_gem_object_init(dev, &nvbo->bo.base, size);
 	if (ret) {
 		nouveau_bo_ref(NULL, &nvbo);
 		return ERR_PTR(-ENOMEM);
 	}
 
+	ret = nouveau_bo_init(nvbo, size, 0, flags, sg, robj);
+	if (ret) {
+		nouveau_bo_ref(NULL, &nvbo);
+		return ERR_PTR(ret);
+	}
+
 	return &nvbo->bo.base;
 }
 
diff --git a/drivers/gpu/drm/omapdrm/dss/dss.c b/drivers/gpu/drm/omapdrm/dss/dss.c
index 5711b7a720e6..e226324adb69 100644
--- a/drivers/gpu/drm/omapdrm/dss/dss.c
+++ b/drivers/gpu/drm/omapdrm/dss/dss.c
@@ -923,7 +923,6 @@ dss_debugfs_create_file(struct dss_device *dss, const char *name,
 			void *data)
 {
 	struct dss_debugfs_entry *entry;
-	struct dentry *d;
 
 	entry = kzalloc(sizeof(*entry), GFP_KERNEL);
 	if (!entry)
@@ -931,15 +930,9 @@ dss_debugfs_create_file(struct dss_device *dss, const char *name,
 
 	entry->show_fn = show_fn;
 	entry->data = data;
+	entry->dentry = debugfs_create_file(name, 0444, dss->debugfs.root,
+					    entry, &dss_debug_fops);
 
-	d = debugfs_create_file(name, 0444, dss->debugfs.root, entry,
-				&dss_debug_fops);
-	if (IS_ERR(d)) {
-		kfree(entry);
-		return ERR_CAST(d);
-	}
-
-	entry->dentry = d;
 	return entry;
 }
 
diff --git a/drivers/gpu/drm/omapdrm/omap_plane.c b/drivers/gpu/drm/omapdrm/omap_plane.c
index 84e1be981cfe..73ec99819a3d 100644
--- a/drivers/gpu/drm/omapdrm/omap_plane.c
+++ b/drivers/gpu/drm/omapdrm/omap_plane.c
@@ -53,8 +53,12 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
 	memset(&info, 0, sizeof(info));
 	info.rotation_type = OMAP_DSS_ROT_NONE;
 	info.rotation = DRM_MODE_ROTATE_0;
-	info.global_alpha = 0xff;
+	info.global_alpha = state->alpha >> 8;
 	info.zorder = state->normalized_zpos;
+	if (state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
+		info.pre_mult_alpha = 1;
+	else
+		info.pre_mult_alpha = 0;
 
 	/* update scanout: */
 	omap_framebuffer_update_scanout(state->fb, state, &info);
@@ -285,6 +289,9 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
 
 	omap_plane_install_properties(plane, &plane->base);
 	drm_plane_create_zpos_property(plane, 0, 0, num_planes - 1);
+	drm_plane_create_alpha_property(plane);
+	drm_plane_create_blend_mode_property(plane, BIT(DRM_MODE_BLEND_PREMULTI) |
+					     BIT(DRM_MODE_BLEND_COVERAGE));
 
 	return plane;
 
diff --git a/drivers/gpu/drm/panfrost/TODO b/drivers/gpu/drm/panfrost/TODO
index e7727b292355..536a0d4f8d29 100644
--- a/drivers/gpu/drm/panfrost/TODO
+++ b/drivers/gpu/drm/panfrost/TODO
@@ -6,10 +6,6 @@
   - Bifrost specific feature and issue handling
   - Coherent DMA support
 
-- Per FD address space support. The h/w supports multiple addresses spaces.
-  The hard part is handling when more address spaces are needed than what
-  the h/w provides.
-
 - Support userspace controlled GPU virtual addresses. Needed for Vulkan. (Tomeu)
 
 - Compute job support. So called 'compute only' jobs need to be plumbed up to
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.c b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
index a7c18bceb7fd..710d903f8e0d 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.c
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.c
@@ -39,7 +39,7 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 	 * If frequency scaling from low to high, adjust voltage first.
 	 * If frequency scaling from high to low, adjust frequency first.
 	 */
-	if (old_clk_rate < target_rate) {
+	if (old_clk_rate < target_rate && pfdev->regulator) {
 		err = regulator_set_voltage(pfdev->regulator, target_volt,
 					    target_volt);
 		if (err) {
@@ -58,7 +58,7 @@ static int panfrost_devfreq_target(struct device *dev, unsigned long *freq,
 		return err;
 	}
 
-	if (old_clk_rate > target_rate) {
+	if (old_clk_rate > target_rate && pfdev->regulator) {
 		err = regulator_set_voltage(pfdev->regulator, target_volt,
 					    target_volt);
 		if (err)
@@ -136,9 +136,6 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 	int ret;
 	struct dev_pm_opp *opp;
 
-	if (!pfdev->regulator)
-		return 0;
-
 	ret = dev_pm_opp_of_add_table(&pfdev->pdev->dev);
 	if (ret == -ENODEV) /* Optional, continue without devfreq */
 		return 0;
@@ -163,12 +160,18 @@ int panfrost_devfreq_init(struct panfrost_device *pfdev)
 		DRM_DEV_ERROR(&pfdev->pdev->dev, "Couldn't initialize GPU devfreq\n");
 		ret = PTR_ERR(pfdev->devfreq.devfreq);
 		pfdev->devfreq.devfreq = NULL;
+		dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
 		return ret;
 	}
 
 	return 0;
 }
 
+void panfrost_devfreq_fini(struct panfrost_device *pfdev)
+{
+	dev_pm_opp_of_remove_table(&pfdev->pdev->dev);
+}
+
 void panfrost_devfreq_resume(struct panfrost_device *pfdev)
 {
 	int i;
diff --git a/drivers/gpu/drm/panfrost/panfrost_devfreq.h b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
index eb999531ed90..e3bc63e82843 100644
--- a/drivers/gpu/drm/panfrost/panfrost_devfreq.h
+++ b/drivers/gpu/drm/panfrost/panfrost_devfreq.h
@@ -5,6 +5,7 @@
 #define __PANFROST_DEVFREQ_H__
 
 int panfrost_devfreq_init(struct panfrost_device *pfdev);
+void panfrost_devfreq_fini(struct panfrost_device *pfdev);
 
 void panfrost_devfreq_resume(struct panfrost_device *pfdev);
 void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.c b/drivers/gpu/drm/panfrost/panfrost_device.c
index 9814f4ccbd26..4da71bb56c20 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.c
+++ b/drivers/gpu/drm/panfrost/panfrost_device.c
@@ -123,8 +123,10 @@ int panfrost_device_init(struct panfrost_device *pfdev)
 	mutex_init(&pfdev->sched_lock);
 	mutex_init(&pfdev->reset_lock);
 	INIT_LIST_HEAD(&pfdev->scheduled_jobs);
+	INIT_LIST_HEAD(&pfdev->as_lru_list);
 
 	spin_lock_init(&pfdev->hwaccess_lock);
+	spin_lock_init(&pfdev->as_lock);
 
 	err = panfrost_clk_init(pfdev);
 	if (err) {
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
index 4e5641db9c7e..f503c566e99f 100644
--- a/drivers/gpu/drm/panfrost/panfrost_device.h
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -5,6 +5,8 @@
 #ifndef __PANFROST_DEVICE_H__
 #define __PANFROST_DEVICE_H__
 
+#include <linux/atomic.h>
+#include <linux/io-pgtable.h>
 #include <linux/spinlock.h>
 #include <drm/drm_device.h>
 #include <drm/drm_mm.h>
@@ -63,9 +65,6 @@ struct panfrost_device {
 
 	spinlock_t hwaccess_lock;
 
-	struct drm_mm mm;
-	spinlock_t mm_lock;
-
 	void __iomem *iomem;
 	struct clk *clock;
 	struct clk *bus_clock;
@@ -74,7 +73,11 @@ struct panfrost_device {
 
 	struct panfrost_features features;
 
-	struct panfrost_mmu *mmu;
+	spinlock_t as_lock;
+	unsigned long as_in_use_mask;
+	unsigned long as_alloc_mask;
+	struct list_head as_lru_list;
+
 	struct panfrost_job_slot *js;
 
 	struct panfrost_job *jobs[NUM_JOB_SLOTS];
@@ -98,10 +101,23 @@ struct panfrost_device {
 	} devfreq;
 };
 
+struct panfrost_mmu {
+	struct io_pgtable_cfg pgtbl_cfg;
+	struct io_pgtable_ops *pgtbl_ops;
+	struct mutex lock;
+	int as;
+	atomic_t as_count;
+	struct list_head list;
+};
+
 struct panfrost_file_priv {
 	struct panfrost_device *pfdev;
 
 	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
+
+	struct panfrost_mmu mmu;
+	struct drm_mm mm;
+	spinlock_t mm_lock;
 };
 
 static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c
index b41754658681..44a558c6e17e 100644
--- a/drivers/gpu/drm/panfrost/panfrost_drv.c
+++ b/drivers/gpu/drm/panfrost/panfrost_drv.c
@@ -403,6 +403,7 @@ static void panfrost_drm_mm_color_adjust(const struct drm_mm_node *node,
 static int
 panfrost_open(struct drm_device *dev, struct drm_file *file)
 {
+	int ret;
 	struct panfrost_device *pfdev = dev->dev_private;
 	struct panfrost_file_priv *panfrost_priv;
 
@@ -413,7 +414,28 @@ panfrost_open(struct drm_device *dev, struct drm_file *file)
 	panfrost_priv->pfdev = pfdev;
 	file->driver_priv = panfrost_priv;
 
-	return panfrost_job_open(panfrost_priv);
+	spin_lock_init(&panfrost_priv->mm_lock);
+
+	/* 4G enough for now. can be 48-bit */
+	drm_mm_init(&panfrost_priv->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);
+	panfrost_priv->mm.color_adjust = panfrost_drm_mm_color_adjust;
+
+	ret = panfrost_mmu_pgtable_alloc(panfrost_priv);
+	if (ret)
+		goto err_pgtable;
+
+	ret = panfrost_job_open(panfrost_priv);
+	if (ret)
+		goto err_job;
+
+	return 0;
+
+err_job:
+	panfrost_mmu_pgtable_free(panfrost_priv);
+err_pgtable:
+	drm_mm_takedown(&panfrost_priv->mm);
+	kfree(panfrost_priv);
+	return ret;
 }
 
 static void
@@ -424,6 +446,8 @@ panfrost_postclose(struct drm_device *dev, struct drm_file *file)
 	panfrost_perfcnt_close(panfrost_priv);
 	panfrost_job_close(panfrost_priv);
 
+	panfrost_mmu_pgtable_free(panfrost_priv);
+	drm_mm_takedown(&panfrost_priv->mm);
 	kfree(panfrost_priv);
 }
 
@@ -496,14 +520,9 @@ static int panfrost_probe(struct platform_device *pdev)
 	ddev->dev_private = pfdev;
 	pfdev->ddev = ddev;
 
-	spin_lock_init(&pfdev->mm_lock);
 	mutex_init(&pfdev->shrinker_lock);
 	INIT_LIST_HEAD(&pfdev->shrinker_list);
 
-	/* 4G enough for now. can be 48-bit */
-	drm_mm_init(&pfdev->mm, SZ_32M >> PAGE_SHIFT, (SZ_4G - SZ_32M) >> PAGE_SHIFT);
-	pfdev->mm.color_adjust = panfrost_drm_mm_color_adjust;
-
 	pm_runtime_use_autosuspend(pfdev->dev);
 	pm_runtime_set_autosuspend_delay(pfdev->dev, 50); /* ~3 frames */
 	pm_runtime_enable(pfdev->dev);
@@ -528,12 +547,14 @@ static int panfrost_probe(struct platform_device *pdev)
 	 */
 	err = drm_dev_register(ddev, 0);
 	if (err < 0)
-		goto err_out1;
+		goto err_out2;
 
 	panfrost_gem_shrinker_init(ddev);
 
 	return 0;
 
+err_out2:
+	panfrost_devfreq_fini(pfdev);
 err_out1:
 	panfrost_device_fini(pfdev);
 err_out0:
@@ -552,6 +573,7 @@ static int panfrost_remove(struct platform_device *pdev)
 	pm_runtime_get_sync(pfdev->dev);
 	pm_runtime_put_sync_autosuspend(pfdev->dev);
 	pm_runtime_disable(pfdev->dev);
+	panfrost_devfreq_fini(pfdev);
 	panfrost_device_fini(pfdev);
 	drm_dev_put(ddev);
 	return 0;
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c
index e71f27c4041e..acb07fe06580 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.c
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.c
@@ -47,8 +47,8 @@ static int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_p
 	size_t size = obj->size;
 	u64 align;
 	struct panfrost_gem_object *bo = to_panfrost_bo(obj);
-	struct panfrost_device *pfdev = obj->dev->dev_private;
 	unsigned long color = bo->noexec ? PANFROST_BO_NOEXEC : 0;
+	struct panfrost_file_priv *priv = file_priv->driver_priv;
 
 	/*
 	 * Executable buffers cannot cross a 16MB boundary as the program
@@ -61,34 +61,37 @@ static int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_p
 	else
 		align = size >= SZ_2M ? SZ_2M >> PAGE_SHIFT : 0;
 
-	spin_lock(&pfdev->mm_lock);
-	ret = drm_mm_insert_node_generic(&pfdev->mm, &bo->node,
+	bo->mmu = &priv->mmu;
+	spin_lock(&priv->mm_lock);
+	ret = drm_mm_insert_node_generic(&priv->mm, &bo->node,
 					 size >> PAGE_SHIFT, align, color, 0);
+	spin_unlock(&priv->mm_lock);
 	if (ret)
-		goto out;
+		return ret;
 
 	if (!bo->is_heap) {
 		ret = panfrost_mmu_map(bo);
-		if (ret)
+		if (ret) {
+			spin_lock(&priv->mm_lock);
 			drm_mm_remove_node(&bo->node);
+			spin_unlock(&priv->mm_lock);
+		}
 	}
-out:
-	spin_unlock(&pfdev->mm_lock);
 	return ret;
 }
 
 static void panfrost_gem_close(struct drm_gem_object *obj, struct drm_file *file_priv)
 {
 	struct panfrost_gem_object *bo = to_panfrost_bo(obj);
-	struct panfrost_device *pfdev = obj->dev->dev_private;
+	struct panfrost_file_priv *priv = file_priv->driver_priv;
 
 	if (bo->is_mapped)
 		panfrost_mmu_unmap(bo);
 
-	spin_lock(&pfdev->mm_lock);
+	spin_lock(&priv->mm_lock);
 	if (drm_mm_node_allocated(&bo->node))
 		drm_mm_remove_node(&bo->node);
-	spin_unlock(&pfdev->mm_lock);
+	spin_unlock(&priv->mm_lock);
 }
 
 static int panfrost_gem_pin(struct drm_gem_object *obj)
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h
index e10f58316915..50920819cc16 100644
--- a/drivers/gpu/drm/panfrost/panfrost_gem.h
+++ b/drivers/gpu/drm/panfrost/panfrost_gem.h
@@ -7,10 +7,13 @@
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_mm.h>
 
+struct panfrost_mmu;
+
 struct panfrost_gem_object {
 	struct drm_gem_shmem_object base;
 	struct sg_table *sgts;
 
+	struct panfrost_mmu *mmu;
 	struct drm_mm_node node;
 	bool is_mapped		:1;
 	bool noexec		:1;
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c b/drivers/gpu/drm/panfrost/panfrost_job.c
index 0fc4539fd08d..05c85f45a0de 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -153,6 +153,8 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
 	if (WARN_ON(job_read(pfdev, JS_COMMAND_NEXT(js))))
 		goto end;
 
+	cfg = panfrost_mmu_as_get(pfdev, &job->file_priv->mmu);
+
 	panfrost_devfreq_record_transition(pfdev, js);
 	spin_lock_irqsave(&pfdev->hwaccess_lock, flags);
 
@@ -163,8 +165,7 @@ static void panfrost_job_hw_submit(struct panfrost_job *job, int js)
 
 	/* start MMU, medium priority, cache clean/flush on end, clean/flush on
 	 * start */
-	/* TODO: different address spaces */
-	cfg = JS_CONFIG_THREAD_PRI(8) |
+	cfg |= JS_CONFIG_THREAD_PRI(8) |
 		JS_CONFIG_START_FLUSH_CLEAN_INVALIDATE |
 		JS_CONFIG_END_FLUSH_CLEAN_INVALIDATE;
 
@@ -377,8 +378,9 @@ static void panfrost_job_timedout(struct drm_sched_job *sched_job)
 	if (dma_fence_is_signaled(job->done_fence))
 		return;
 
-	dev_err(pfdev->dev, "gpu sched timeout, js=%d, status=0x%x, head=0x%x, tail=0x%x, sched_job=%p",
+	dev_err(pfdev->dev, "gpu sched timeout, js=%d, config=0x%x, status=0x%x, head=0x%x, tail=0x%x, sched_job=%p",
 		js,
+		job_read(pfdev, JS_CONFIG(js)),
 		job_read(pfdev, JS_STATUS(js)),
 		job_read(pfdev, JS_HEAD_LO(js)),
 		job_read(pfdev, JS_TAIL_LO(js)),
@@ -448,8 +450,12 @@ static irqreturn_t panfrost_job_irq_handler(int irq, void *data)
 		}
 
 		if (status & JOB_INT_MASK_DONE(j)) {
+			struct panfrost_job *job = pfdev->jobs[j];
+
+			pfdev->jobs[j] = NULL;
+			panfrost_mmu_as_put(pfdev, &job->file_priv->mmu);
 			panfrost_devfreq_record_transition(pfdev, j);
-			dma_fence_signal(pfdev->jobs[j]->done_fence);
+			dma_fence_signal(job->done_fence);
 		}
 
 		status &= ~mask;
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c
index 2ed411f09d80..842bdd7cf6be 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier:	GPL-2.0
 /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
+#include <linux/atomic.h>
 #include <linux/bitfield.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
@@ -22,12 +23,6 @@
 #define mmu_write(dev, reg, data) writel(data, dev->iomem + reg)
 #define mmu_read(dev, reg) readl(dev->iomem + reg)
 
-struct panfrost_mmu {
-	struct io_pgtable_cfg pgtbl_cfg;
-	struct io_pgtable_ops *pgtbl_ops;
-	struct mutex lock;
-};
-
 static int wait_ready(struct panfrost_device *pfdev, u32 as_nr)
 {
 	int ret;
@@ -85,13 +80,19 @@ static void lock_region(struct panfrost_device *pfdev, u32 as_nr,
 }
 
 
-static int mmu_hw_do_operation(struct panfrost_device *pfdev, u32 as_nr,
-		u64 iova, size_t size, u32 op)
+static int mmu_hw_do_operation(struct panfrost_device *pfdev,
+			       struct panfrost_mmu *mmu,
+			       u64 iova, size_t size, u32 op)
 {
-	unsigned long flags;
-	int ret;
+	int ret, as_nr;
 
-	spin_lock_irqsave(&pfdev->hwaccess_lock, flags);
+	spin_lock(&pfdev->as_lock);
+	as_nr = mmu->as;
+
+	if (as_nr < 0) {
+		spin_unlock(&pfdev->as_lock);
+		return 0;
+	}
 
 	if (op != AS_COMMAND_UNLOCK)
 		lock_region(pfdev, as_nr, iova, size);
@@ -102,14 +103,15 @@ static int mmu_hw_do_operation(struct panfrost_device *pfdev, u32 as_nr,
 	/* Wait for the flush to complete */
 	ret = wait_ready(pfdev, as_nr);
 
-	spin_unlock_irqrestore(&pfdev->hwaccess_lock, flags);
+	spin_unlock(&pfdev->as_lock);
 
 	return ret;
 }
 
-static void panfrost_mmu_enable(struct panfrost_device *pfdev, u32 as_nr)
+static void panfrost_mmu_enable(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
 {
-	struct io_pgtable_cfg *cfg = &pfdev->mmu->pgtbl_cfg;
+	int as_nr = mmu->as;
+	struct io_pgtable_cfg *cfg = &mmu->pgtbl_cfg;
 	u64 transtab = cfg->arm_mali_lpae_cfg.transtab;
 	u64 memattr = cfg->arm_mali_lpae_cfg.memattr;
 
@@ -136,9 +138,75 @@ static void mmu_disable(struct panfrost_device *pfdev, u32 as_nr)
 	write_cmd(pfdev, as_nr, AS_COMMAND_UPDATE);
 }
 
+u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
+{
+	int as;
+
+	spin_lock(&pfdev->as_lock);
+
+	as = mmu->as;
+	if (as >= 0) {
+		int en = atomic_inc_return(&mmu->as_count);
+		WARN_ON(en >= NUM_JOB_SLOTS);
+
+		list_move(&mmu->list, &pfdev->as_lru_list);
+		goto out;
+	}
+
+	/* Check for a free AS */
+	as = ffz(pfdev->as_alloc_mask);
+	if (!(BIT(as) & pfdev->features.as_present)) {
+		struct panfrost_mmu *lru_mmu;
+
+		list_for_each_entry_reverse(lru_mmu, &pfdev->as_lru_list, list) {
+			if (!atomic_read(&lru_mmu->as_count))
+				break;
+		}
+		WARN_ON(&lru_mmu->list == &pfdev->as_lru_list);
+
+		list_del_init(&lru_mmu->list);
+		as = lru_mmu->as;
+
+		WARN_ON(as < 0);
+		lru_mmu->as = -1;
+	}
+
+	/* Assign the free or reclaimed AS to the FD */
+	mmu->as = as;
+	set_bit(as, &pfdev->as_alloc_mask);
+	atomic_set(&mmu->as_count, 1);
+	list_add(&mmu->list, &pfdev->as_lru_list);
+
+	dev_dbg(pfdev->dev, "Assigned AS%d to mmu %p, alloc_mask=%lx", as, mmu, pfdev->as_alloc_mask);
+
+	panfrost_mmu_enable(pfdev, mmu);
+
+out:
+	spin_unlock(&pfdev->as_lock);
+	return as;
+}
+
+void panfrost_mmu_as_put(struct panfrost_device *pfdev, struct panfrost_mmu *mmu)
+{
+	atomic_dec(&mmu->as_count);
+	WARN_ON(atomic_read(&mmu->as_count) < 0);
+}
+
 void panfrost_mmu_reset(struct panfrost_device *pfdev)
 {
-	panfrost_mmu_enable(pfdev, 0);
+	struct panfrost_mmu *mmu, *mmu_tmp;
+
+	spin_lock(&pfdev->as_lock);
+
+	pfdev->as_alloc_mask = 0;
+
+	list_for_each_entry_safe(mmu, mmu_tmp, &pfdev->as_lru_list, list) {
+		mmu->as = -1;
+		atomic_set(&mmu->as_count, 0);
+		list_del_init(&mmu->list);
+	}
+
+	spin_unlock(&pfdev->as_lock);
 
 	mmu_write(pfdev, MMU_INT_CLEAR, ~0);
 	mmu_write(pfdev, MMU_INT_MASK, ~0);
@@ -152,21 +220,21 @@ static size_t get_pgsize(u64 addr, size_t size)
 	return SZ_2M;
 }
 
-static int mmu_map_sg(struct panfrost_device *pfdev, u64 iova,
-		      int prot, struct sg_table *sgt)
+static int mmu_map_sg(struct panfrost_device *pfdev, struct panfrost_mmu *mmu,
+		      u64 iova, int prot, struct sg_table *sgt)
 {
 	unsigned int count;
 	struct scatterlist *sgl;
-	struct io_pgtable_ops *ops = pfdev->mmu->pgtbl_ops;
+	struct io_pgtable_ops *ops = mmu->pgtbl_ops;
 	u64 start_iova = iova;
 
-	mutex_lock(&pfdev->mmu->lock);
+	mutex_lock(&mmu->lock);
 
 	for_each_sg(sgt->sgl, sgl, sgt->nents, count) {
 		unsigned long paddr = sg_dma_address(sgl);
 		size_t len = sg_dma_len(sgl);
 
-		dev_dbg(pfdev->dev, "map: iova=%llx, paddr=%lx, len=%zx", iova, paddr, len);
+		dev_dbg(pfdev->dev, "map: as=%d, iova=%llx, paddr=%lx, len=%zx", mmu->as, iova, paddr, len);
 
 		while (len) {
 			size_t pgsize = get_pgsize(iova | paddr, len);
@@ -178,10 +246,10 @@ static int mmu_map_sg(struct panfrost_device *pfdev, u64 iova,
 		}
 	}
 
-	mmu_hw_do_operation(pfdev, 0, start_iova, iova - start_iova,
+	mmu_hw_do_operation(pfdev, mmu, start_iova, iova - start_iova,
 			    AS_COMMAND_FLUSH_PT);
 
-	mutex_unlock(&pfdev->mmu->lock);
+	mutex_unlock(&mmu->lock);
 
 	return 0;
 }
@@ -208,7 +276,7 @@ int panfrost_mmu_map(struct panfrost_gem_object *bo)
 	if (ret < 0)
 		return ret;
 
-	mmu_map_sg(pfdev, bo->node.start << PAGE_SHIFT, prot, sgt);
+	mmu_map_sg(pfdev, bo->mmu, bo->node.start << PAGE_SHIFT, prot, sgt);
 
 	pm_runtime_mark_last_busy(pfdev->dev);
 	pm_runtime_put_autosuspend(pfdev->dev);
@@ -221,7 +289,7 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo)
 {
 	struct drm_gem_object *obj = &bo->base.base;
 	struct panfrost_device *pfdev = to_panfrost_device(obj->dev);
-	struct io_pgtable_ops *ops = pfdev->mmu->pgtbl_ops;
+	struct io_pgtable_ops *ops = bo->mmu->pgtbl_ops;
 	u64 iova = bo->node.start << PAGE_SHIFT;
 	size_t len = bo->node.size << PAGE_SHIFT;
 	size_t unmapped_len = 0;
@@ -230,13 +298,13 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo)
 	if (WARN_ON(!bo->is_mapped))
 		return;
 
-	dev_dbg(pfdev->dev, "unmap: iova=%llx, len=%zx", iova, len);
+	dev_dbg(pfdev->dev, "unmap: as=%d, iova=%llx, len=%zx", bo->mmu->as, iova, len);
 
 	ret = pm_runtime_get_sync(pfdev->dev);
 	if (ret < 0)
 		return;
 
-	mutex_lock(&pfdev->mmu->lock);
+	mutex_lock(&bo->mmu->lock);
 
 	while (unmapped_len < len) {
 		size_t unmapped_page;
@@ -250,10 +318,10 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo)
 		unmapped_len += pgsize;
 	}
 
-	mmu_hw_do_operation(pfdev, 0, bo->node.start << PAGE_SHIFT,
+	mmu_hw_do_operation(pfdev, bo->mmu, bo->node.start << PAGE_SHIFT,
 			    bo->node.size << PAGE_SHIFT, AS_COMMAND_FLUSH_PT);
 
-	mutex_unlock(&pfdev->mmu->lock);
+	mutex_unlock(&bo->mmu->lock);
 
 	pm_runtime_mark_last_busy(pfdev->dev);
 	pm_runtime_put_autosuspend(pfdev->dev);
@@ -262,9 +330,9 @@ void panfrost_mmu_unmap(struct panfrost_gem_object *bo)
 
 static void mmu_tlb_inv_context_s1(void *cookie)
 {
-	struct panfrost_device *pfdev = cookie;
+	struct panfrost_file_priv *priv = cookie;
 
-	mmu_hw_do_operation(pfdev, 0, 0, ~0UL, AS_COMMAND_FLUSH_MEM);
+	mmu_hw_do_operation(priv->pfdev, &priv->mmu, 0, ~0UL, AS_COMMAND_FLUSH_MEM);
 }
 
 static void mmu_tlb_inv_range_nosync(unsigned long iova, size_t size,
@@ -283,16 +351,69 @@ static const struct iommu_gather_ops mmu_tlb_ops = {
 	.tlb_sync	= mmu_tlb_sync_context,
 };
 
+int panfrost_mmu_pgtable_alloc(struct panfrost_file_priv *priv)
+{
+	struct panfrost_mmu *mmu = &priv->mmu;
+	struct panfrost_device *pfdev = priv->pfdev;
+
+	mutex_init(&mmu->lock);
+	INIT_LIST_HEAD(&mmu->list);
+	mmu->as = -1;
+
+	mmu->pgtbl_cfg = (struct io_pgtable_cfg) {
+		.pgsize_bitmap	= SZ_4K | SZ_2M,
+		.ias		= FIELD_GET(0xff, pfdev->features.mmu_features),
+		.oas		= FIELD_GET(0xff00, pfdev->features.mmu_features),
+		.tlb		= &mmu_tlb_ops,
+		.iommu_dev	= pfdev->dev,
+	};
+
+	mmu->pgtbl_ops = alloc_io_pgtable_ops(ARM_MALI_LPAE, &mmu->pgtbl_cfg,
+					      priv);
+	if (!mmu->pgtbl_ops)
+		return -EINVAL;
+
+	return 0;
+}
+
+void panfrost_mmu_pgtable_free(struct panfrost_file_priv *priv)
+{
+	struct panfrost_device *pfdev = priv->pfdev;
+	struct panfrost_mmu *mmu = &priv->mmu;
+
+	spin_lock(&pfdev->as_lock);
+	if (mmu->as >= 0) {
+		clear_bit(mmu->as, &pfdev->as_alloc_mask);
+		clear_bit(mmu->as, &pfdev->as_in_use_mask);
+		list_del(&mmu->list);
+	}
+	spin_unlock(&pfdev->as_lock);
+
+	free_io_pgtable_ops(mmu->pgtbl_ops);
+}
+
 static struct drm_mm_node *addr_to_drm_mm_node(struct panfrost_device *pfdev, int as, u64 addr)
 {
-	struct drm_mm_node *node;
+	struct drm_mm_node *node = NULL;
 	u64 offset = addr >> PAGE_SHIFT;
+	struct panfrost_mmu *mmu;
+
+	spin_lock(&pfdev->as_lock);
+	list_for_each_entry(mmu, &pfdev->as_lru_list, list) {
+		struct panfrost_file_priv *priv;
+		if (as != mmu->as)
+			continue;
 
-	drm_mm_for_each_node(node, &pfdev->mm) {
-		if (offset >= node->start && offset < (node->start + node->size))
-			return node;
+		priv = container_of(mmu, struct panfrost_file_priv, mmu);
+		drm_mm_for_each_node(node, &priv->mm) {
+			if (offset >= node->start && offset < (node->start + node->size))
+				goto out;
+		}
 	}
-	return NULL;
+
+out:
+	spin_unlock(&pfdev->as_lock);
+	return node;
 }
 
 #define NUM_FAULT_PAGES (SZ_2M / PAGE_SIZE)
@@ -317,6 +438,8 @@ int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, u64 addr)
 			 node->start << PAGE_SHIFT);
 		return -EINVAL;
 	}
+	WARN_ON(bo->mmu->as != as);
+
 	/* Assume 2MB alignment and size multiple */
 	addr &= ~((u64)SZ_2M - 1);
 	page_offset = addr >> PAGE_SHIFT;
@@ -327,14 +450,17 @@ int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, u64 addr)
 	if (!bo->base.pages) {
 		bo->sgts = kvmalloc_array(bo->base.base.size / SZ_2M,
 				     sizeof(struct sg_table), GFP_KERNEL | __GFP_ZERO);
-		if (!bo->sgts)
+		if (!bo->sgts) {
+			mutex_unlock(&bo->base.pages_lock);
 			return -ENOMEM;
+		}
 
 		pages = kvmalloc_array(bo->base.base.size >> PAGE_SHIFT,
 				       sizeof(struct page *), GFP_KERNEL | __GFP_ZERO);
 		if (!pages) {
 			kfree(bo->sgts);
 			bo->sgts = NULL;
+			mutex_unlock(&bo->base.pages_lock);
 			return -ENOMEM;
 		}
 		bo->base.pages = pages;
@@ -367,11 +493,11 @@ int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, u64 addr)
 		goto err_map;
 	}
 
-	mmu_map_sg(pfdev, addr, IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt);
+	mmu_map_sg(pfdev, bo->mmu, addr, IOMMU_WRITE | IOMMU_READ | IOMMU_NOEXEC, sgt);
 
 	bo->is_mapped = true;
 
-	dev_dbg(pfdev->dev, "mapped page fault @ %llx", addr);
+	dev_dbg(pfdev->dev, "mapped page fault @ AS%d %llx", as, addr);
 
 	return 0;
 
@@ -480,15 +606,8 @@ static irqreturn_t panfrost_mmu_irq_handler_thread(int irq, void *data)
 
 int panfrost_mmu_init(struct panfrost_device *pfdev)
 {
-	struct io_pgtable_ops *pgtbl_ops;
 	int err, irq;
 
-	pfdev->mmu = devm_kzalloc(pfdev->dev, sizeof(*pfdev->mmu), GFP_KERNEL);
-	if (!pfdev->mmu)
-		return -ENOMEM;
-
-	mutex_init(&pfdev->mmu->lock);
-
 	irq = platform_get_irq_byname(to_platform_device(pfdev->dev), "mmu");
 	if (irq <= 0)
 		return -ENODEV;
@@ -501,22 +620,6 @@ int panfrost_mmu_init(struct panfrost_device *pfdev)
 		dev_err(pfdev->dev, "failed to request mmu irq");
 		return err;
 	}
-	pfdev->mmu->pgtbl_cfg = (struct io_pgtable_cfg) {
-		.pgsize_bitmap	= SZ_4K | SZ_2M,
-		.ias		= FIELD_GET(0xff, pfdev->features.mmu_features),
-		.oas		= FIELD_GET(0xff00, pfdev->features.mmu_features),
-		.tlb		= &mmu_tlb_ops,
-		.iommu_dev	= pfdev->dev,
-	};
-
-	pgtbl_ops = alloc_io_pgtable_ops(ARM_MALI_LPAE, &pfdev->mmu->pgtbl_cfg,
-					 pfdev);
-	if (!pgtbl_ops)
-		return -ENOMEM;
-
-	pfdev->mmu->pgtbl_ops = pgtbl_ops;
-
-	panfrost_mmu_enable(pfdev, 0);
 
 	return 0;
 }
@@ -525,6 +628,4 @@ void panfrost_mmu_fini(struct panfrost_device *pfdev)
 {
 	mmu_write(pfdev, MMU_INT_MASK, 0);
 	mmu_disable(pfdev, 0);
-
-	free_io_pgtable_ops(pfdev->mmu->pgtbl_ops);
 }
diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.h b/drivers/gpu/drm/panfrost/panfrost_mmu.h
index d5f9b24537db..7c5b6775ae23 100644
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.h
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.h
@@ -5,6 +5,8 @@
 #define __PANFROST_MMU_H__
 
 struct panfrost_gem_object;
+struct panfrost_file_priv;
+struct panfrost_mmu;
 
 int panfrost_mmu_map(struct panfrost_gem_object *bo);
 void panfrost_mmu_unmap(struct panfrost_gem_object *bo);
@@ -13,4 +15,10 @@ int panfrost_mmu_init(struct panfrost_device *pfdev);
 void panfrost_mmu_fini(struct panfrost_device *pfdev);
 void panfrost_mmu_reset(struct panfrost_device *pfdev);
 
+u32 panfrost_mmu_as_get(struct panfrost_device *pfdev, struct panfrost_mmu *mmu);
+void panfrost_mmu_as_put(struct panfrost_device *pfdev, struct panfrost_mmu *mmu);
+
+int panfrost_mmu_pgtable_alloc(struct panfrost_file_priv *priv);
+void panfrost_mmu_pgtable_free(struct panfrost_file_priv *priv);
+
 #endif
diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index 8504e19437ff..fc1e45d44719 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -487,11 +487,6 @@ static int aty128_encode_var(struct fb_var_screeninfo *var,
                              const struct aty128fb_par *par);
 static int aty128_decode_var(struct fb_var_screeninfo *var,
                              struct aty128fb_par *par);
-#if 0
-static void aty128_get_pllinfo(struct aty128fb_par *par, void __iomem *bios);
-static void __iomem *aty128_map_ROM(struct pci_dev *pdev,
-				    const struct aty128fb_par *par);
-#endif
 static void aty128_timings(struct aty128fb_par *par);
 static void aty128_init_engine(struct aty128fb_par *par);
 static void aty128_reset_engine(const struct aty128fb_par *par);
@@ -1665,19 +1660,6 @@ static void aty128_st_pal(u_int regno, u_int red, u_int green, u_int blue,
 			  struct aty128fb_par *par)
 {
 	if (par->chip_gen == rage_M3) {
-#if 0
-		/* Note: For now, on M3, we set palette on both heads, which may
-		 * be useless. Can someone with a M3 check this ?
-		 * 
-		 * This code would still be useful if using the second CRTC to 
-		 * do mirroring
-		 */
-
-		aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) |
-			    DAC_PALETTE_ACCESS_CNTL);
-		aty_st_8(PALETTE_INDEX, regno);
-		aty_st_le32(PALETTE_DATA, (red<<16)|(green<<8)|blue);
-#endif
 		aty_st_le32(DAC_CNTL, aty_ld_le32(DAC_CNTL) &
 			    ~DAC_PALETTE_ACCESS_CNTL);
 	}
diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
index 72bcfbe42e49..6dda5d885a03 100644
--- a/drivers/video/fbdev/aty/atyfb_base.c
+++ b/drivers/video/fbdev/aty/atyfb_base.c
@@ -1188,19 +1188,6 @@ static int aty_crtc_to_var(const struct crtc *crtc,
 		(c_sync ? FB_SYNC_COMP_HIGH_ACT : 0);
 
 	switch (pix_width) {
-#if 0
-	case CRTC_PIX_WIDTH_4BPP:
-		bpp = 4;
-		var->red.offset = 0;
-		var->red.length = 8;
-		var->green.offset = 0;
-		var->green.length = 8;
-		var->blue.offset = 0;
-		var->blue.length = 8;
-		var->transp.offset = 0;
-		var->transp.length = 0;
-		break;
-#endif
 	case CRTC_PIX_WIDTH_8BPP:
 		bpp = 8;
 		var->red.offset = 0;
@@ -1466,11 +1453,6 @@ static int atyfb_set_par(struct fb_info *info)
 		var->bits_per_pixel,
 		par->crtc.vxres * var->bits_per_pixel / 8);
 #endif /* CONFIG_BOOTX_TEXT */
-#if 0
-	/* switch to accelerator mode */
-	if (!(par->crtc.gen_cntl & CRTC_EXT_DISP_EN))
-		aty_st_le32(CRTC_GEN_CNTL, par->crtc.gen_cntl | CRTC_EXT_DISP_EN, par);
-#endif
 #ifdef DEBUG
 {
 	/* dump non shadow CRTC, pll, LCD registers */
@@ -2396,17 +2378,6 @@ static int aty_init(struct fb_info *info)
 			par->pll_ops = &aty_pll_ibm514;
 			break;
 #endif
-#if 0 /* dead code */
-		case CLK_STG1703:
-			par->pll_ops = &aty_pll_stg1703;
-			break;
-		case CLK_CH8398:
-			par->pll_ops = &aty_pll_ch8398;
-			break;
-		case CLK_ATT20C408:
-			par->pll_ops = &aty_pll_att20c408;
-			break;
-#endif
 		default:
 			PRINTKI("aty_init: CLK type not implemented yet!");
 			par->pll_ops = &aty_pll_unsupported;
diff --git a/drivers/video/fbdev/aty/radeon_base.c b/drivers/video/fbdev/aty/radeon_base.c
index 6f891d82eebe..4ca07866f2f6 100644
--- a/drivers/video/fbdev/aty/radeon_base.c
+++ b/drivers/video/fbdev/aty/radeon_base.c
@@ -2217,8 +2217,7 @@ static ssize_t radeon_show_edid1(struct file *filp, struct kobject *kobj,
 				 char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
-	struct pci_dev *pdev = to_pci_dev(dev);
-        struct fb_info *info = pci_get_drvdata(pdev);
+	struct fb_info *info = dev_get_drvdata(dev);
         struct radeonfb_info *rinfo = info->par;
 
 	return radeon_show_one_edid(buf, off, count, rinfo->mon1_EDID);
@@ -2230,8 +2229,7 @@ static ssize_t radeon_show_edid2(struct file *filp, struct kobject *kobj,
 				 char *buf, loff_t off, size_t count)
 {
 	struct device *dev = container_of(kobj, struct device, kobj);
-	struct pci_dev *pdev = to_pci_dev(dev);
-        struct fb_info *info = pci_get_drvdata(pdev);
+	struct fb_info *info = dev_get_drvdata(dev);
         struct radeonfb_info *rinfo = info->par;
 
 	return radeon_show_one_edid(buf, off, count, rinfo->mon2_EDID);
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 04a22663b4fb..51d97ec4f58f 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -122,28 +122,13 @@ static void efifb_copy_bmp(u8 *src, u32 *dst, int width, struct screen_info *si)
  */
 static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width)
 {
-	static const int default_resolutions[][2] = {
-		{  800,  600 },
-		{ 1024,  768 },
-		{ 1280, 1024 },
-	};
-	u32 i, right_margin;
-
-	for (i = 0; i < ARRAY_SIZE(default_resolutions); i++) {
-		if (default_resolutions[i][0] == si->lfb_width &&
-		    default_resolutions[i][1] == si->lfb_height)
-			break;
-	}
-	/* If not a default resolution used for textmode, this should be fine */
-	if (i >= ARRAY_SIZE(default_resolutions))
-		return true;
-
-	/* If the right margin is 5 times smaller then the left one, reject */
-	right_margin = si->lfb_width - (bgrt_tab.image_offset_x + bmp_width);
-	if (right_margin < (bgrt_tab.image_offset_x / 5))
-		return false;
+	/*
+	 * All x86 firmwares horizontally center the image (the yoffset
+	 * calculations differ between boards, but xoffset is predictable).
+	 */
+	u32 expected_xoffset = (si->lfb_width - bmp_width) / 2;
 
-	return true;
+	return bgrt_tab.image_offset_x == expected_xoffset;
 }
 #else
 static bool efifb_bgrt_sanity_check(struct screen_info *si, u32 bmp_width)
diff --git a/drivers/video/fbdev/mmp/core.c b/drivers/video/fbdev/mmp/core.c
index 0ffc1b7b7052..154127256a2c 100644
--- a/drivers/video/fbdev/mmp/core.c
+++ b/drivers/video/fbdev/mmp/core.c
@@ -153,13 +153,11 @@ EXPORT_SYMBOL_GPL(mmp_get_path);
 struct mmp_path *mmp_register_path(struct mmp_path_info *info)
 {
 	int i;
-	size_t size;
 	struct mmp_path *path = NULL;
 	struct mmp_panel *panel;
 
-	size = sizeof(struct mmp_path)
-		+ sizeof(struct mmp_overlay) * info->overlay_num;
-	path = kzalloc(size, GFP_KERNEL);
+	path = kzalloc(struct_size(path, overlays, info->overlay_num),
+		       GFP_KERNEL);
 	if (!path)
 		return NULL;
 
diff --git a/drivers/video/fbdev/pvr2fb.c b/drivers/video/fbdev/pvr2fb.c
index 7ff4b6b84282..0a3b2b7c7891 100644
--- a/drivers/video/fbdev/pvr2fb.c
+++ b/drivers/video/fbdev/pvr2fb.c
@@ -458,13 +458,11 @@ static int pvr2fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	set_color_bitfields(var);
 
 	if (var->vmode & FB_VMODE_YWRAP) {
-		if (var->xoffset || var->yoffset < 0 ||
-		    var->yoffset >= var->yres_virtual) {
+		if (var->xoffset || var->yoffset >= var->yres_virtual) {
 			var->xoffset = var->yoffset = 0;
 		} else {
 			if (var->xoffset > var->xres_virtual - var->xres ||
-			    var->yoffset > var->yres_virtual - var->yres ||
-			    var->xoffset < 0 || var->yoffset < 0)
+			    var->yoffset > var->yres_virtual - var->yres)
 				var->xoffset = var->yoffset = 0;
 		}
 	} else {
diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c
index ac0bcac9a865..c249763dbf0b 100644
--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
@@ -1594,6 +1594,7 @@ sh_mobile_lcdc_overlay_fb_init(struct sh_mobile_lcdc_overlay *ovl)
 	case V4L2_PIX_FMT_NV12:
 	case V4L2_PIX_FMT_NV21:
 		info->fix.ypanstep = 2;
+		/* Fall through */
 	case V4L2_PIX_FMT_NV16:
 	case V4L2_PIX_FMT_NV61:
 		info->fix.xpanstep = 2;
@@ -2084,6 +2085,7 @@ sh_mobile_lcdc_channel_fb_init(struct sh_mobile_lcdc_chan *ch,
 	case V4L2_PIX_FMT_NV12:
 	case V4L2_PIX_FMT_NV21:
 		info->fix.ypanstep = 2;
+		/* Fall through */
 	case V4L2_PIX_FMT_NV16:
 	case V4L2_PIX_FMT_NV61:
 		info->fix.xpanstep = 2;
diff --git a/drivers/video/fbdev/sm712fb.c b/drivers/video/fbdev/sm712fb.c
index 7b1b0d8d27a7..207d0add684b 100644
--- a/drivers/video/fbdev/sm712fb.c
+++ b/drivers/video/fbdev/sm712fb.c
@@ -1694,10 +1694,8 @@ static void smtcfb_pci_remove(struct pci_dev *pdev)
 
 static int __maybe_unused smtcfb_pci_suspend(struct device *device)
 {
-	struct pci_dev *pdev = to_pci_dev(device);
-	struct smtcfb_info *sfb;
+	struct smtcfb_info *sfb = dev_get_drvdata(device);
 
-	sfb = pci_get_drvdata(pdev);
 
 	/* set the hw in sleep mode use external clock and self memory refresh
 	 * so that we can turn off internal PLLs later on
@@ -1717,10 +1715,8 @@ static int __maybe_unused smtcfb_pci_suspend(struct device *device)
 
 static int __maybe_unused smtcfb_pci_resume(struct device *device)
 {
-	struct pci_dev *pdev = to_pci_dev(device);
-	struct smtcfb_info *sfb;
+	struct smtcfb_info *sfb = dev_get_drvdata(device);
 
-	sfb = pci_get_drvdata(pdev);
 
 	/* reinit hardware */
 	sm7xx_init_hw();
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index c328e8265cb1..fe373b63ddd6 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -1183,7 +1183,7 @@ static int dlfb_ops_blank(int blank_mode, struct fb_info *info)
 	return 0;
 }
 
-static struct fb_ops dlfb_ops = {
+static const struct fb_ops dlfb_ops = {
 	.owner = THIS_MODULE,
 	.fb_read = fb_sys_read,
 	.fb_write = dlfb_ops_write,
diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index e2b2062673da..ffa2ca2d3f5e 100644
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c
@@ -221,49 +221,6 @@ void viafb_release_dma(void)
 }
 EXPORT_SYMBOL_GPL(viafb_release_dma);
 
-
-#if 0
-/*
- * Copy a single buffer from FB memory, synchronously.  This code works
- * but is not currently used.
- */
-void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len)
-{
-	unsigned long flags;
-	int csr;
-
-	mutex_lock(&viafb_dma_lock);
-	init_completion(&viafb_dma_completion);
-	/*
-	 * Program the controller.
-	 */
-	spin_lock_irqsave(&global_dev.reg_lock, flags);
-	viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE);
-	/* Enable ints; must happen after CSR0 write! */
-	viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE);
-	viafb_mmio_write(VDMA_MARL0, (int) (paddr & 0xfffffff0));
-	viafb_mmio_write(VDMA_MARH0, (int) ((paddr >> 28) & 0xfff));
-	/* Data sheet suggests DAR0 should be <<4, but it lies */
-	viafb_mmio_write(VDMA_DAR0, offset);
-	viafb_mmio_write(VDMA_DQWCR0, len >> 4);
-	viafb_mmio_write(VDMA_TMR0, 0);
-	viafb_mmio_write(VDMA_DPRL0, 0);
-	viafb_mmio_write(VDMA_DPRH0, 0);
-	viafb_mmio_write(VDMA_PMR0, 0);
-	csr = viafb_mmio_read(VDMA_CSR0);
-	viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START);
-	spin_unlock_irqrestore(&global_dev.reg_lock, flags);
-	/*
-	 * Now we just wait until the interrupt handler says
-	 * we're done.
-	 */
-	wait_for_completion_interruptible(&viafb_dma_completion);
-	viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */
-	mutex_unlock(&viafb_dma_lock);
-}
-EXPORT_SYMBOL_GPL(viafb_dma_copy_out);
-#endif
-
 /*
  * Do a scatter/gather DMA copy from FB memory.  You must have done
  * a successful call to viafb_request_dma() first.