9 files changed, 51 insertions, 399 deletions

diff --git a/drivers/gpu/drm/tilcdc/Kconfig b/drivers/gpu/drm/tilcdc/Kconfig
index 28fed7e206d0..81ac82455ce4 100644
--- a/drivers/gpu/drm/tilcdc/Kconfig
+++ b/drivers/gpu/drm/tilcdc/Kconfig
@@ -12,14 +12,3 @@ config DRM_TILCDC
 	  controller, for example AM33xx in beagle-bone, DA8xx, or
 	  OMAP-L1xx.  This driver replaces the FB_DA8XX fbdev driver.
 
-config DRM_TILCDC_SLAVE_COMPAT
-	bool "Support device tree blobs using TI LCDC Slave binding"
-	depends on DRM_TILCDC
-	default y
-	select OF_RESOLVE
-	select OF_OVERLAY
-	help
-	  Choose this option if you need a kernel that is compatible
-	  with device tree blobs using the obsolete "ti,tilcdc,slave"
-	  binding. If you find "ti,tilcdc,slave"-string from your DTB,
-	  you probably need this. Otherwise you do not.
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile
index 55ebd516728f..87f9480e43b0 100644
--- a/drivers/gpu/drm/tilcdc/Makefile
+++ b/drivers/gpu/drm/tilcdc/Makefile
@@ -1,10 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
 ifeq (, $(findstring -W,$(EXTRA_CFLAGS)))
 	ccflags-y += -Werror
 endif
 
-obj-$(CONFIG_DRM_TILCDC_SLAVE_COMPAT) += tilcdc_slave_compat.o \
-					 tilcdc_slave_compat.dtb.o
-
 tilcdc-y := \
 	tilcdc_plane.o \
 	tilcdc_crtc.o \
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 406fe4544b83..6ef4d1a1e3a9 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -24,6 +24,7 @@
 #include <linux/completion.h>
 #include <linux/dma-mapping.h>
 #include <linux/of_graph.h>
+#include <linux/math64.h>
 
 #include "tilcdc_drv.h"
 #include "tilcdc_regs.h"
@@ -48,6 +49,7 @@ struct tilcdc_crtc {
 	unsigned int lcd_fck_rate;
 
 	ktime_t last_vblank;
+	unsigned int hvtotal_us;
 
 	struct drm_framebuffer *curr_fb;
 	struct drm_framebuffer *next_fb;
@@ -75,7 +77,7 @@ static void unref_worker(struct drm_flip_work *work, void *val)
 	struct drm_device *dev = tilcdc_crtc->base.dev;
 
 	mutex_lock(&dev->mode_config.mutex);
-	drm_framebuffer_unreference(val);
+	drm_framebuffer_put(val);
 	mutex_unlock(&dev->mode_config.mutex);
 }
 
@@ -292,6 +294,12 @@ static void tilcdc_crtc_set_clk(struct drm_crtc *crtc)
 				LCDC_V2_CORE_CLK_EN);
 }
 
+uint tilcdc_mode_hvtotal(const struct drm_display_mode *mode)
+{
+	return (uint) div_u64(1000llu * mode->htotal * mode->vtotal,
+			      mode->clock);
+}
+
 static void tilcdc_crtc_set_mode(struct drm_crtc *crtc)
 {
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
@@ -456,9 +464,12 @@ static void tilcdc_crtc_set_mode(struct drm_crtc *crtc)
 
 	set_scanout(crtc, fb);
 
-	drm_framebuffer_reference(fb);
+	drm_framebuffer_get(fb);
 
 	crtc->hwmode = crtc->state->adjusted_mode;
+
+	tilcdc_crtc->hvtotal_us =
+		tilcdc_mode_hvtotal(&crtc->hwmode);
 }
 
 static void tilcdc_crtc_enable(struct drm_crtc *crtc)
@@ -467,7 +478,6 @@ static void tilcdc_crtc_enable(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	unsigned long flags;
 
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
 	mutex_lock(&tilcdc_crtc->enable_lock);
 	if (tilcdc_crtc->enabled || tilcdc_crtc->shutdown) {
 		mutex_unlock(&tilcdc_crtc->enable_lock);
@@ -564,7 +574,6 @@ static void tilcdc_crtc_off(struct drm_crtc *crtc, bool shutdown)
 
 static void tilcdc_crtc_disable(struct drm_crtc *crtc)
 {
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
 	tilcdc_crtc_off(crtc, false);
 }
 
@@ -608,9 +617,7 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct tilcdc_drm_private *priv = crtc->dev->dev_private;
 
-	drm_modeset_lock(&crtc->mutex, NULL);
-	tilcdc_crtc_disable(crtc);
-	drm_modeset_unlock(&crtc->mutex);
+	tilcdc_crtc_shutdown(crtc);
 
 	flush_workqueue(priv->wq);
 
@@ -626,14 +633,12 @@ int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
 	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
 	struct drm_device *dev = crtc->dev;
 
-	WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
-
 	if (tilcdc_crtc->event) {
 		dev_err(dev->dev, "already pending page flip!\n");
 		return -EBUSY;
 	}
 
-	drm_framebuffer_reference(fb);
+	drm_framebuffer_get(fb);
 
 	crtc->primary->fb = fb;
 	tilcdc_crtc->event = event;
@@ -648,7 +653,7 @@ int tilcdc_crtc_update_fb(struct drm_crtc *crtc,
 		spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags);
 
 		next_vblank = ktime_add_us(tilcdc_crtc->last_vblank,
-					   1000000 / crtc->hwmode.vrefresh);
+					   tilcdc_crtc->hvtotal_us);
 		tdiff = ktime_to_us(ktime_sub(next_vblank, ktime_get()));
 
 		if (tdiff < TILCDC_VBLANK_SAFETY_THRESHOLD_US)
@@ -728,11 +733,39 @@ static void tilcdc_crtc_disable_vblank(struct drm_crtc *crtc)
 {
 }
 
+static void tilcdc_crtc_reset(struct drm_crtc *crtc)
+{
+	struct tilcdc_crtc *tilcdc_crtc = to_tilcdc_crtc(crtc);
+	struct drm_device *dev = crtc->dev;
+	int ret;
+
+	drm_atomic_helper_crtc_reset(crtc);
+
+	/* Turn the raster off if it for some reason is on. */
+	pm_runtime_get_sync(dev->dev);
+	if (tilcdc_read(dev, LCDC_RASTER_CTRL_REG) & LCDC_RASTER_ENABLE) {
+		/* Enable DMA Frame Done Interrupt */
+		tilcdc_write(dev, LCDC_INT_ENABLE_SET_REG, LCDC_FRAME_DONE);
+		tilcdc_clear_irqstatus(dev, 0xffffffff);
+
+		tilcdc_crtc->frame_done = false;
+		tilcdc_clear(dev, LCDC_RASTER_CTRL_REG, LCDC_RASTER_ENABLE);
+
+		ret = wait_event_timeout(tilcdc_crtc->frame_done_wq,
+					 tilcdc_crtc->frame_done,
+					 msecs_to_jiffies(500));
+		if (ret == 0)
+			dev_err(dev->dev, "%s: timeout waiting for framedone\n",
+				__func__);
+	}
+	pm_runtime_put_sync(dev->dev);
+}
+
 static const struct drm_crtc_funcs tilcdc_crtc_funcs = {
 	.destroy        = tilcdc_crtc_destroy,
 	.set_config     = drm_atomic_helper_set_config,
 	.page_flip      = drm_atomic_helper_page_flip,
-	.reset		= drm_atomic_helper_crtc_reset,
+	.reset		= tilcdc_crtc_reset,
 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 	.enable_vblank	= tilcdc_crtc_enable_vblank,
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index b0d70f943cec..72ce063aa0d8 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -23,6 +23,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 
 #include "tilcdc_drv.h"
 #include "tilcdc_regs.h"
@@ -65,7 +66,7 @@ static struct of_device_id tilcdc_of_match[];
 static struct drm_framebuffer *tilcdc_fb_create(struct drm_device *dev,
 		struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd)
 {
-	return drm_fb_cma_create(dev, file_priv, mode_cmd);
+	return drm_gem_fb_create(dev, file_priv, mode_cmd);
 }
 
 static void tilcdc_fb_output_poll_changed(struct drm_device *dev)
@@ -225,7 +226,7 @@ static void tilcdc_fini(struct drm_device *dev)
 
 	pm_runtime_disable(dev->dev);
 
-	drm_dev_unref(dev);
+	drm_dev_put(dev);
 }
 
 static int tilcdc_init(struct drm_driver *ddrv, struct device *dev)
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
index 1813a3623ce6..8eebb5f826a6 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
@@ -418,7 +418,7 @@ static int panel_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct of_device_id panel_of_match[] = {
+static const struct of_device_id panel_of_match[] = {
 		{ .compatible = "ti,tilcdc,panel", },
 		{ },
 };
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
deleted file mode 100644
index 623a9140493c..000000000000
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.c
+++ /dev/null
@@ -1,270 +0,0 @@
-/*
- * Copyright (C) 2015 Texas Instruments
- * Author: Jyri Sarha <jsarha@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- */
-
-/*
- * To support the old "ti,tilcdc,slave" binding the binding has to be
- * transformed to the new external encoder binding.
- */
-
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/of_graph.h>
-#include <linux/of_fdt.h>
-#include <linux/slab.h>
-#include <linux/list.h>
-
-#include "tilcdc_slave_compat.h"
-
-struct kfree_table {
-	int total;
-	int num;
-	void **table;
-};
-
-static int __init kfree_table_init(struct kfree_table *kft)
-{
-	kft->total = 32;
-	kft->num = 0;
-	kft->table = kmalloc(kft->total * sizeof(*kft->table),
-			     GFP_KERNEL);
-	if (!kft->table)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static int __init kfree_table_add(struct kfree_table *kft, void *p)
-{
-	if (kft->num == kft->total) {
-		void **old = kft->table;
-
-		kft->total *= 2;
-		kft->table = krealloc(old, kft->total * sizeof(*kft->table),
-				      GFP_KERNEL);
-		if (!kft->table) {
-			kft->table = old;
-			kfree(p);
-			return -ENOMEM;
-		}
-	}
-	kft->table[kft->num++] = p;
-	return 0;
-}
-
-static void __init kfree_table_free(struct kfree_table *kft)
-{
-	int i;
-
-	for (i = 0; i < kft->num; i++)
-		kfree(kft->table[i]);
-
-	kfree(kft->table);
-}
-
-static
-struct property * __init tilcdc_prop_dup(const struct property *prop,
-					 struct kfree_table *kft)
-{
-	struct property *nprop;
-
-	nprop = kzalloc(sizeof(*nprop), GFP_KERNEL);
-	if (!nprop || kfree_table_add(kft, nprop))
-		return NULL;
-
-	nprop->name = kstrdup(prop->name, GFP_KERNEL);
-	if (!nprop->name || kfree_table_add(kft, nprop->name))
-		return NULL;
-
-	nprop->value = kmemdup(prop->value, prop->length, GFP_KERNEL);
-	if (!nprop->value || kfree_table_add(kft, nprop->value))
-		return NULL;
-
-	nprop->length = prop->length;
-
-	return nprop;
-}
-
-static void __init tilcdc_copy_props(struct device_node *from,
-				     struct device_node *to,
-				     const char * const props[],
-				     struct kfree_table *kft)
-{
-	struct property *prop;
-	int i;
-
-	for (i = 0; props[i]; i++) {
-		prop = of_find_property(from, props[i], NULL);
-		if (!prop)
-			continue;
-
-		prop = tilcdc_prop_dup(prop, kft);
-		if (!prop)
-			continue;
-
-		prop->next = to->properties;
-		to->properties = prop;
-	}
-}
-
-static int __init tilcdc_prop_str_update(struct property *prop,
-					  const char *str,
-					  struct kfree_table *kft)
-{
-	prop->value = kstrdup(str, GFP_KERNEL);
-	if (kfree_table_add(kft, prop->value) || !prop->value)
-		return -ENOMEM;
-	prop->length = strlen(str)+1;
-	return 0;
-}
-
-static void __init tilcdc_node_disable(struct device_node *node)
-{
-	struct property *prop;
-
-	prop = kzalloc(sizeof(*prop), GFP_KERNEL);
-	if (!prop)
-		return;
-
-	prop->name = "status";
-	prop->value = "disabled";
-	prop->length = strlen((char *)prop->value)+1;
-
-	of_update_property(node, prop);
-}
-
-static struct device_node * __init tilcdc_get_overlay(struct kfree_table *kft)
-{
-	const int size = __dtb_tilcdc_slave_compat_end -
-		__dtb_tilcdc_slave_compat_begin;
-	static void *overlay_data;
-	struct device_node *overlay;
-	int ret;
-
-	if (!size) {
-		pr_warn("%s: No overlay data\n", __func__);
-		return NULL;
-	}
-
-	overlay_data = kmemdup(__dtb_tilcdc_slave_compat_begin,
-			       size, GFP_KERNEL);
-	if (!overlay_data || kfree_table_add(kft, overlay_data))
-		return NULL;
-
-	of_fdt_unflatten_tree(overlay_data, NULL, &overlay);
-	if (!overlay) {
-		pr_warn("%s: Unfattening overlay tree failed\n", __func__);
-		return NULL;
-	}
-
-	of_node_set_flag(overlay, OF_DETACHED);
-	ret = of_resolve_phandles(overlay);
-	if (ret) {
-		pr_err("%s: Failed to resolve phandles: %d\n", __func__, ret);
-		return NULL;
-	}
-
-	return overlay;
-}
-
-static const struct of_device_id tilcdc_slave_of_match[] __initconst = {
-	{ .compatible = "ti,tilcdc,slave", },
-	{},
-};
-
-static const struct of_device_id tilcdc_of_match[] __initconst = {
-	{ .compatible = "ti,am33xx-tilcdc", },
-	{},
-};
-
-static const struct of_device_id tilcdc_tda998x_of_match[] __initconst = {
-	{ .compatible = "nxp,tda998x", },
-	{},
-};
-
-static const char * const tilcdc_slave_props[] __initconst = {
-	"pinctrl-names",
-	"pinctrl-0",
-	"pinctrl-1",
-	NULL
-};
-
-static void __init tilcdc_convert_slave_node(void)
-{
-	struct device_node *slave = NULL, *lcdc = NULL;
-	struct device_node *i2c = NULL, *fragment = NULL;
-	struct device_node *overlay, *encoder;
-	struct property *prop;
-	/* For all memory needed for the overlay tree. This memory can
-	   be freed after the overlay has been applied. */
-	struct kfree_table kft;
-	int ret;
-
-	if (kfree_table_init(&kft))
-		return;
-
-	lcdc = of_find_matching_node(NULL, tilcdc_of_match);
-	slave = of_find_matching_node(NULL, tilcdc_slave_of_match);
-
-	if (!slave || !of_device_is_available(lcdc))
-		goto out;
-
-	i2c = of_parse_phandle(slave, "i2c", 0);
-	if (!i2c) {
-		pr_err("%s: Can't find i2c node trough phandle\n", __func__);
-		goto out;
-	}
-
-	overlay = tilcdc_get_overlay(&kft);
-	if (!overlay)
-		goto out;
-
-	encoder = of_find_matching_node(overlay, tilcdc_tda998x_of_match);
-	if (!encoder) {
-		pr_err("%s: Failed to find tda998x node\n", __func__);
-		goto out;
-	}
-
-	tilcdc_copy_props(slave, encoder, tilcdc_slave_props, &kft);
-
-	for_each_child_of_node(overlay, fragment) {
-		prop = of_find_property(fragment, "target-path", NULL);
-		if (!prop)
-			continue;
-		if (!strncmp("i2c", (char *)prop->value, prop->length))
-			if (tilcdc_prop_str_update(prop, i2c->full_name, &kft))
-				goto out;
-		if (!strncmp("lcdc", (char *)prop->value, prop->length))
-			if (tilcdc_prop_str_update(prop, lcdc->full_name, &kft))
-				goto out;
-	}
-
-	tilcdc_node_disable(slave);
-
-	ret = of_overlay_create(overlay);
-	if (ret)
-		pr_err("%s: Creating overlay failed: %d\n", __func__, ret);
-	else
-		pr_info("%s: ti,tilcdc,slave node successfully converted\n",
-			__func__);
-out:
-	kfree_table_free(&kft);
-	of_node_put(i2c);
-	of_node_put(slave);
-	of_node_put(lcdc);
-	of_node_put(fragment);
-}
-
-static int __init tilcdc_slave_compat_init(void)
-{
-	tilcdc_convert_slave_node();
-	return 0;
-}
-
-subsys_initcall(tilcdc_slave_compat_init);
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts
deleted file mode 100644
index 693f8b0aea2d..000000000000
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.dts
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * DTS overlay for converting ti,tilcdc,slave binding to new binding.
- *
- * Copyright (C) 2015 Texas Instruments Inc.
- * Author: Jyri Sarha <jsarha@ti.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * version 2 as published by the Free Software Foundation.
- */
-
-/*
- * target-path property values are simple tags that are replaced with
- * correct values in tildcdc_slave_compat.c. Some properties are also
- * copied over from the ti,tilcdc,slave node.
- */
-
-/dts-v1/;
-/ {
-	fragment@0 {
-		target-path = "i2c";
-		__overlay__ {
-			#address-cells = <1>;
-			#size-cells = <0>;
-			tda19988 {
-				compatible = "nxp,tda998x";
-				reg = <0x70>;
-				status = "okay";
-
-				port {
-					hdmi_0: endpoint@0 {
-						remote-endpoint = <&lcd_0>;
-					};
-				};
-			};
-		};
-	};
-
-	fragment@1 {
-		target-path = "lcdc";
-		__overlay__ {
-			port {
-				lcd_0: endpoint@0 {
-					remote-endpoint = <&hdmi_0>;
-				};
-			};
-		};
-	};
-
-	__local_fixups__ {
-		fragment@0 {
-			__overlay__ {
-				tda19988 {
-					port {
-						endpoint@0 {
-							remote-endpoint	= <0>;
-						};
-					};
-				};
-			};
-		};
-		fragment@1 {
-			__overlay__ {
-				port {
-					endpoint@0 {
-						remote-endpoint	= <0>;
-					};
-				};
-			};
-		};
-	};
-};
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h b/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h
deleted file mode 100644
index 403d35d87d0b..000000000000
--- a/drivers/gpu/drm/tilcdc/tilcdc_slave_compat.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Copyright (C) 2015 Texas Instruments
- * Author: Jyri Sarha <jsarha@ti.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-/* This header declares the symbols defined in tilcdc_slave_compat.dts */
-
-#ifndef __TILCDC_SLAVE_COMPAT_H__
-#define __TILCDC_SLAVE_COMPAT_H__
-
-extern uint8_t __dtb_tilcdc_slave_compat_begin[];
-extern uint8_t __dtb_tilcdc_slave_compat_end[];
-
-#endif /* __TILCDC_SLAVE_COMPAT_H__ */
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
index 1e2dfb1b1d6b..7e3643462a08 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
@@ -289,8 +289,6 @@ static const struct tilcdc_module_ops tfp410_module_ops = {
  * Device:
  */
 
-static struct of_device_id tfp410_of_match[];
-
 static int tfp410_probe(struct platform_device *pdev)
 {
 	struct device_node *node = pdev->dev.of_node;
@@ -375,7 +373,7 @@ static int tfp410_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static struct of_device_id tfp410_of_match[] = {
+static const struct of_device_id tfp410_of_match[] = {
 		{ .compatible = "ti,tilcdc,tfp410", },
 		{ },
 };