Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 454 insertions, 0 deletions

diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c
new file mode 100644
index 000000000..1887473cd
--- /dev/null
+++ b/drivers/gpu/drm/meson/meson_drv.c
@@ -0,0 +1,454 @@
+/*
+ * Copyright (C) 2016 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ * Copyright (C) 2014 Endless Mobile
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * 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/>.
+ *
+ * Written by:
+ *     Jasper St. Pierre <jstpierre@mecheye.net>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/component.h>
+#include <linux/of_graph.h>
+
+#include <drm/drmP.h>
+#include <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_flip_work.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_rect.h>
+#include <drm/drm_fb_helper.h>
+
+#include "meson_drv.h"
+#include "meson_plane.h"
+#include "meson_crtc.h"
+#include "meson_venc_cvbs.h"
+
+#include "meson_vpp.h"
+#include "meson_viu.h"
+#include "meson_venc.h"
+#include "meson_canvas.h"
+#include "meson_registers.h"
+
+#define DRIVER_NAME "meson"
+#define DRIVER_DESC "Amlogic Meson DRM driver"
+
+/**
+ * DOC: Video Processing Unit
+ *
+ * VPU Handles the Global Video Processing, it includes management of the
+ * clocks gates, blocks reset lines and power domains.
+ *
+ * What is missing :
+ *
+ * - Full reset of entire video processing HW blocks
+ * - Scaling and setup of the VPU clock
+ * - Bus clock gates
+ * - Powering up video processing HW blocks
+ * - Powering Up HDMI controller and PHY
+ */
+
+static void meson_fb_output_poll_changed(struct drm_device *dev)
+{
+	struct meson_drm *priv = dev->dev_private;
+
+	drm_fbdev_cma_hotplug_event(priv->fbdev);
+}
+
+static const struct drm_mode_config_funcs meson_mode_config_funcs = {
+	.output_poll_changed = meson_fb_output_poll_changed,
+	.atomic_check        = drm_atomic_helper_check,
+	.atomic_commit       = drm_atomic_helper_commit,
+	.fb_create           = drm_gem_fb_create,
+};
+
+static const struct drm_mode_config_helper_funcs meson_mode_config_helpers = {
+	.atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
+};
+
+static irqreturn_t meson_irq(int irq, void *arg)
+{
+	struct drm_device *dev = arg;
+	struct meson_drm *priv = dev->dev_private;
+
+	(void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG));
+
+	meson_crtc_irq(priv);
+
+	return IRQ_HANDLED;
+}
+
+DEFINE_DRM_GEM_CMA_FOPS(fops);
+
+static struct drm_driver meson_driver = {
+	.driver_features	= DRIVER_HAVE_IRQ | DRIVER_GEM |
+				  DRIVER_MODESET | DRIVER_PRIME |
+				  DRIVER_ATOMIC,
+
+	/* IRQ */
+	.irq_handler		= meson_irq,
+
+	/* PRIME Ops */
+	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
+	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
+	.gem_prime_import	= drm_gem_prime_import,
+	.gem_prime_export	= drm_gem_prime_export,
+	.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,
+
+	/* GEM Ops */
+	.dumb_create		= drm_gem_cma_dumb_create,
+	.gem_free_object_unlocked = drm_gem_cma_free_object,
+	.gem_vm_ops		= &drm_gem_cma_vm_ops,
+
+	/* Misc */
+	.fops			= &fops,
+	.name			= DRIVER_NAME,
+	.desc			= DRIVER_DESC,
+	.date			= "20161109",
+	.major			= 1,
+	.minor			= 0,
+};
+
+static bool meson_vpu_has_available_connectors(struct device *dev)
+{
+	struct device_node *ep, *remote;
+
+	/* Parses each endpoint and check if remote exists */
+	for_each_endpoint_of_node(dev->of_node, ep) {
+		/* If the endpoint node exists, consider it enabled */
+		remote = of_graph_get_remote_port(ep);
+		if (remote)
+			return true;
+	}
+
+	return false;
+}
+
+static struct regmap_config meson_regmap_config = {
+	.reg_bits       = 32,
+	.val_bits       = 32,
+	.reg_stride     = 4,
+	.max_register   = 0x1000,
+};
+
+static void meson_vpu_init(struct meson_drm *priv)
+{
+	writel_relaxed(0x210000, priv->io_base + _REG(VPU_RDARB_MODE_L1C1));
+	writel_relaxed(0x10000, priv->io_base + _REG(VPU_RDARB_MODE_L1C2));
+	writel_relaxed(0x900000, priv->io_base + _REG(VPU_RDARB_MODE_L2C1));
+	writel_relaxed(0x20000, priv->io_base + _REG(VPU_WRARB_MODE_L2C1));
+}
+
+static int meson_drv_bind_master(struct device *dev, bool has_components)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct meson_drm *priv;
+	struct drm_device *drm;
+	struct resource *res;
+	void __iomem *regs;
+	int ret;
+
+	/* Checks if an output connector is available */
+	if (!meson_vpu_has_available_connectors(dev)) {
+		dev_err(dev, "No output connector available\n");
+		return -ENODEV;
+	}
+
+	drm = drm_dev_alloc(&meson_driver, dev);
+	if (IS_ERR(drm))
+		return PTR_ERR(drm);
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv) {
+		ret = -ENOMEM;
+		goto free_drm;
+	}
+	drm->dev_private = priv;
+	priv->drm = drm;
+	priv->dev = dev;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
+	regs = devm_ioremap_resource(dev, res);
+	if (IS_ERR(regs)) {
+		ret = PTR_ERR(regs);
+		goto free_drm;
+	}
+
+	priv->io_base = regs;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi");
+	if (!res) {
+		ret = -EINVAL;
+		goto free_drm;
+	}
+	/* Simply ioremap since it may be a shared register zone */
+	regs = devm_ioremap(dev, res->start, resource_size(res));
+	if (!regs) {
+		ret = -EADDRNOTAVAIL;
+		goto free_drm;
+	}
+
+	priv->hhi = devm_regmap_init_mmio(dev, regs,
+					  &meson_regmap_config);
+	if (IS_ERR(priv->hhi)) {
+		dev_err(&pdev->dev, "Couldn't create the HHI regmap\n");
+		ret = PTR_ERR(priv->hhi);
+		goto free_drm;
+	}
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc");
+	if (!res) {
+		ret = -EINVAL;
+		goto free_drm;
+	}
+	/* Simply ioremap since it may be a shared register zone */
+	regs = devm_ioremap(dev, res->start, resource_size(res));
+	if (!regs) {
+		ret = -EADDRNOTAVAIL;
+		goto free_drm;
+	}
+
+	priv->dmc = devm_regmap_init_mmio(dev, regs,
+					  &meson_regmap_config);
+	if (IS_ERR(priv->dmc)) {
+		dev_err(&pdev->dev, "Couldn't create the DMC regmap\n");
+		ret = PTR_ERR(priv->dmc);
+		goto free_drm;
+	}
+
+	priv->vsync_irq = platform_get_irq(pdev, 0);
+
+	ret = drm_vblank_init(drm, 1);
+	if (ret)
+		goto free_drm;
+
+	drm_mode_config_init(drm);
+	drm->mode_config.max_width = 3840;
+	drm->mode_config.max_height = 2160;
+	drm->mode_config.funcs = &meson_mode_config_funcs;
+	drm->mode_config.helper_private	= &meson_mode_config_helpers;
+
+	/* Hardware Initialization */
+
+	meson_vpu_init(priv);
+	meson_venc_init(priv);
+	meson_vpp_init(priv);
+	meson_viu_init(priv);
+
+	/* Encoder Initialization */
+
+	ret = meson_venc_cvbs_create(priv);
+	if (ret)
+		goto free_drm;
+
+	if (has_components) {
+		ret = component_bind_all(drm->dev, drm);
+		if (ret) {
+			dev_err(drm->dev, "Couldn't bind all components\n");
+			goto free_drm;
+		}
+	}
+
+	ret = meson_plane_create(priv);
+	if (ret)
+		goto free_drm;
+
+	ret = meson_crtc_create(priv);
+	if (ret)
+		goto free_drm;
+
+	ret = drm_irq_install(drm, priv->vsync_irq);
+	if (ret)
+		goto free_drm;
+
+	drm_mode_config_reset(drm);
+
+	priv->fbdev = drm_fbdev_cma_init(drm, 32,
+					 drm->mode_config.num_connector);
+	if (IS_ERR(priv->fbdev)) {
+		ret = PTR_ERR(priv->fbdev);
+		goto free_drm;
+	}
+
+	drm_kms_helper_poll_init(drm);
+
+	platform_set_drvdata(pdev, priv);
+
+	ret = drm_dev_register(drm, 0);
+	if (ret)
+		goto uninstall_irq;
+
+	return 0;
+
+uninstall_irq:
+	drm_irq_uninstall(drm);
+free_drm:
+	drm_dev_put(drm);
+
+	return ret;
+}
+
+static int meson_drv_bind(struct device *dev)
+{
+	return meson_drv_bind_master(dev, true);
+}
+
+static void meson_drv_unbind(struct device *dev)
+{
+	struct meson_drm *priv = dev_get_drvdata(dev);
+	struct drm_device *drm = priv->drm;
+
+	drm_dev_unregister(drm);
+	drm_irq_uninstall(drm);
+	drm_kms_helper_poll_fini(drm);
+	drm_fbdev_cma_fini(priv->fbdev);
+	drm_mode_config_cleanup(drm);
+	drm_dev_put(drm);
+
+}
+
+static const struct component_master_ops meson_drv_master_ops = {
+	.bind	= meson_drv_bind,
+	.unbind	= meson_drv_unbind,
+};
+
+static int compare_of(struct device *dev, void *data)
+{
+	DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n",
+			 dev->of_node, data);
+
+	return dev->of_node == data;
+}
+
+/* Possible connectors nodes to ignore */
+static const struct of_device_id connectors_match[] = {
+	{ .compatible = "composite-video-connector" },
+	{ .compatible = "svideo-connector" },
+	{ .compatible = "hdmi-connector" },
+	{ .compatible = "dvi-connector" },
+	{}
+};
+
+static int meson_probe_remote(struct platform_device *pdev,
+			      struct component_match **match,
+			      struct device_node *parent,
+			      struct device_node *remote)
+{
+	struct device_node *ep, *remote_node;
+	int count = 1;
+
+	/* If node is a connector, return and do not add to match table */
+	if (of_match_node(connectors_match, remote))
+		return 1;
+
+	component_match_add(&pdev->dev, match, compare_of, remote);
+
+	for_each_endpoint_of_node(remote, ep) {
+		remote_node = of_graph_get_remote_port_parent(ep);
+		if (!remote_node ||
+		    remote_node == parent || /* Ignore parent endpoint */
+		    !of_device_is_available(remote_node)) {
+			of_node_put(remote_node);
+			continue;
+		}
+
+		count += meson_probe_remote(pdev, match, remote, remote_node);
+
+		of_node_put(remote_node);
+	}
+
+	return count;
+}
+
+static void meson_drv_shutdown(struct platform_device *pdev)
+{
+	struct meson_drm *priv = dev_get_drvdata(&pdev->dev);
+
+	if (!priv)
+		return;
+
+	drm_kms_helper_poll_fini(priv->drm);
+	drm_atomic_helper_shutdown(priv->drm);
+}
+
+static int meson_drv_probe(struct platform_device *pdev)
+{
+	struct component_match *match = NULL;
+	struct device_node *np = pdev->dev.of_node;
+	struct device_node *ep, *remote;
+	int count = 0;
+
+	for_each_endpoint_of_node(np, ep) {
+		remote = of_graph_get_remote_port_parent(ep);
+		if (!remote || !of_device_is_available(remote)) {
+			of_node_put(remote);
+			continue;
+		}
+
+		count += meson_probe_remote(pdev, &match, np, remote);
+		of_node_put(remote);
+	}
+
+	if (count && !match)
+		return meson_drv_bind_master(&pdev->dev, false);
+
+	/* If some endpoints were found, initialize the nodes */
+	if (count) {
+		dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count);
+
+		return component_master_add_with_match(&pdev->dev,
+						       &meson_drv_master_ops,
+						       match);
+	}
+
+	/* If no output endpoints were available, simply bail out */
+	return 0;
+};
+
+static const struct of_device_id dt_match[] = {
+	{ .compatible = "amlogic,meson-gxbb-vpu" },
+	{ .compatible = "amlogic,meson-gxl-vpu" },
+	{ .compatible = "amlogic,meson-gxm-vpu" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, dt_match);
+
+static struct platform_driver meson_drm_platform_driver = {
+	.probe      = meson_drv_probe,
+	.shutdown   = meson_drv_shutdown,
+	.driver     = {
+		.name	= "meson-drm",
+		.of_match_table = dt_match,
+	},
+};
+
+module_platform_driver(meson_drm_platform_driver);
+
+MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>");
+MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");