Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 346 insertions, 0 deletions

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
new file mode 100644
index 000000000..cc7664c95
--- /dev/null
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c
@@ -0,0 +1,346 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
+ * Author: James.Qian.Wang <james.qian.wang@arm.com>
+ *
+ */
+#include <linux/io.h>
+#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/pm_runtime.h>
+#include <linux/dma-mapping.h>
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+#endif
+
+#include <drm/drm_print.h>
+
+#include "komeda_dev.h"
+
+static int komeda_register_show(struct seq_file *sf, void *x)
+{
+	struct komeda_dev *mdev = sf->private;
+	int i;
+
+	seq_puts(sf, "\n====== Komeda register dump =========\n");
+
+	pm_runtime_get_sync(mdev->dev);
+
+	if (mdev->funcs->dump_register)
+		mdev->funcs->dump_register(mdev, sf);
+
+	for (i = 0; i < mdev->n_pipelines; i++)
+		komeda_pipeline_dump_register(mdev->pipelines[i], sf);
+
+	pm_runtime_put(mdev->dev);
+
+	return 0;
+}
+
+DEFINE_SHOW_ATTRIBUTE(komeda_register);
+
+#ifdef CONFIG_DEBUG_FS
+static void komeda_debugfs_init(struct komeda_dev *mdev)
+{
+	if (!debugfs_initialized())
+		return;
+
+	mdev->debugfs_root = debugfs_create_dir("komeda", NULL);
+	debugfs_create_file("register", 0444, mdev->debugfs_root,
+			    mdev, &komeda_register_fops);
+	debugfs_create_x16("err_verbosity", 0664, mdev->debugfs_root,
+			   &mdev->err_verbosity);
+}
+#endif
+
+static ssize_t
+core_id_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct komeda_dev *mdev = dev_to_mdev(dev);
+
+	return sysfs_emit(buf, "0x%08x\n", mdev->chip.core_id);
+}
+static DEVICE_ATTR_RO(core_id);
+
+static ssize_t
+config_id_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct komeda_dev *mdev = dev_to_mdev(dev);
+	struct komeda_pipeline *pipe = mdev->pipelines[0];
+	union komeda_config_id config_id;
+	int i;
+
+	memset(&config_id, 0, sizeof(config_id));
+
+	config_id.max_line_sz = pipe->layers[0]->hsize_in.end;
+	config_id.n_pipelines = mdev->n_pipelines;
+	config_id.n_scalers = pipe->n_scalers;
+	config_id.n_layers = pipe->n_layers;
+	config_id.n_richs = 0;
+	for (i = 0; i < pipe->n_layers; i++) {
+		if (pipe->layers[i]->layer_type == KOMEDA_FMT_RICH_LAYER)
+			config_id.n_richs++;
+	}
+	return sysfs_emit(buf, "0x%08x\n", config_id.value);
+}
+static DEVICE_ATTR_RO(config_id);
+
+static ssize_t
+aclk_hz_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct komeda_dev *mdev = dev_to_mdev(dev);
+
+	return sysfs_emit(buf, "%lu\n", clk_get_rate(mdev->aclk));
+}
+static DEVICE_ATTR_RO(aclk_hz);
+
+static struct attribute *komeda_sysfs_entries[] = {
+	&dev_attr_core_id.attr,
+	&dev_attr_config_id.attr,
+	&dev_attr_aclk_hz.attr,
+	NULL,
+};
+
+static struct attribute_group komeda_sysfs_attr_group = {
+	.attrs = komeda_sysfs_entries,
+};
+
+static int komeda_parse_pipe_dt(struct komeda_pipeline *pipe)
+{
+	struct device_node *np = pipe->of_node;
+	struct clk *clk;
+
+	clk = of_clk_get_by_name(np, "pxclk");
+	if (IS_ERR(clk)) {
+		DRM_ERROR("get pxclk for pipeline %d failed!\n", pipe->id);
+		return PTR_ERR(clk);
+	}
+	pipe->pxlclk = clk;
+
+	/* enum ports */
+	pipe->of_output_links[0] =
+		of_graph_get_remote_node(np, KOMEDA_OF_PORT_OUTPUT, 0);
+	pipe->of_output_links[1] =
+		of_graph_get_remote_node(np, KOMEDA_OF_PORT_OUTPUT, 1);
+	pipe->of_output_port =
+		of_graph_get_port_by_id(np, KOMEDA_OF_PORT_OUTPUT);
+
+	pipe->dual_link = pipe->of_output_links[0] && pipe->of_output_links[1];
+
+	return 0;
+}
+
+static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct device_node *child, *np = dev->of_node;
+	struct komeda_pipeline *pipe;
+	u32 pipe_id = U32_MAX;
+	int ret = -1;
+
+	mdev->irq  = platform_get_irq(pdev, 0);
+	if (mdev->irq < 0) {
+		DRM_ERROR("could not get IRQ number.\n");
+		return mdev->irq;
+	}
+
+	/* Get the optional framebuffer memory resource */
+	ret = of_reserved_mem_device_init(dev);
+	if (ret && ret != -ENODEV)
+		return ret;
+
+	for_each_available_child_of_node(np, child) {
+		if (of_node_name_eq(child, "pipeline")) {
+			of_property_read_u32(child, "reg", &pipe_id);
+			if (pipe_id >= mdev->n_pipelines) {
+				DRM_WARN("Skip the redundant DT node: pipeline-%u.\n",
+					 pipe_id);
+				continue;
+			}
+			mdev->pipelines[pipe_id]->of_node = of_node_get(child);
+		}
+	}
+
+	for (pipe_id = 0; pipe_id < mdev->n_pipelines; pipe_id++) {
+		pipe = mdev->pipelines[pipe_id];
+
+		if (!pipe->of_node) {
+			DRM_ERROR("Pipeline-%d doesn't have a DT node.\n",
+				  pipe->id);
+			return -EINVAL;
+		}
+		ret = komeda_parse_pipe_dt(pipe);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+struct komeda_dev *komeda_dev_create(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	komeda_identify_func komeda_identify;
+	struct komeda_dev *mdev;
+	int err = 0;
+
+	komeda_identify = of_device_get_match_data(dev);
+	if (!komeda_identify)
+		return ERR_PTR(-ENODEV);
+
+	mdev = devm_kzalloc(dev, sizeof(*mdev), GFP_KERNEL);
+	if (!mdev)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_init(&mdev->lock);
+
+	mdev->dev = dev;
+	mdev->reg_base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(mdev->reg_base)) {
+		DRM_ERROR("Map register space failed.\n");
+		err = PTR_ERR(mdev->reg_base);
+		mdev->reg_base = NULL;
+		goto err_cleanup;
+	}
+
+	mdev->aclk = devm_clk_get(dev, "aclk");
+	if (IS_ERR(mdev->aclk)) {
+		DRM_ERROR("Get engine clk failed.\n");
+		err = PTR_ERR(mdev->aclk);
+		mdev->aclk = NULL;
+		goto err_cleanup;
+	}
+
+	clk_prepare_enable(mdev->aclk);
+
+	mdev->funcs = komeda_identify(mdev->reg_base, &mdev->chip);
+	if (!mdev->funcs) {
+		DRM_ERROR("Failed to identify the HW.\n");
+		err = -ENODEV;
+		goto disable_clk;
+	}
+
+	DRM_INFO("Found ARM Mali-D%x version r%dp%d\n",
+		 MALIDP_CORE_ID_PRODUCT_ID(mdev->chip.core_id),
+		 MALIDP_CORE_ID_MAJOR(mdev->chip.core_id),
+		 MALIDP_CORE_ID_MINOR(mdev->chip.core_id));
+
+	mdev->funcs->init_format_table(mdev);
+
+	err = mdev->funcs->enum_resources(mdev);
+	if (err) {
+		DRM_ERROR("enumerate display resource failed.\n");
+		goto disable_clk;
+	}
+
+	err = komeda_parse_dt(dev, mdev);
+	if (err) {
+		DRM_ERROR("parse device tree failed.\n");
+		goto disable_clk;
+	}
+
+	err = komeda_assemble_pipelines(mdev);
+	if (err) {
+		DRM_ERROR("assemble display pipelines failed.\n");
+		goto disable_clk;
+	}
+
+	dma_set_max_seg_size(dev, U32_MAX);
+
+	mdev->iommu = iommu_get_domain_for_dev(mdev->dev);
+	if (!mdev->iommu)
+		DRM_INFO("continue without IOMMU support!\n");
+
+	clk_disable_unprepare(mdev->aclk);
+
+	err = sysfs_create_group(&dev->kobj, &komeda_sysfs_attr_group);
+	if (err) {
+		DRM_ERROR("create sysfs group failed.\n");
+		goto err_cleanup;
+	}
+
+	mdev->err_verbosity = KOMEDA_DEV_PRINT_ERR_EVENTS;
+
+#ifdef CONFIG_DEBUG_FS
+	komeda_debugfs_init(mdev);
+#endif
+
+	return mdev;
+
+disable_clk:
+	clk_disable_unprepare(mdev->aclk);
+err_cleanup:
+	komeda_dev_destroy(mdev);
+	return ERR_PTR(err);
+}
+
+void komeda_dev_destroy(struct komeda_dev *mdev)
+{
+	struct device *dev = mdev->dev;
+	const struct komeda_dev_funcs *funcs = mdev->funcs;
+	int i;
+
+	sysfs_remove_group(&dev->kobj, &komeda_sysfs_attr_group);
+
+#ifdef CONFIG_DEBUG_FS
+	debugfs_remove_recursive(mdev->debugfs_root);
+#endif
+
+	if (mdev->aclk)
+		clk_prepare_enable(mdev->aclk);
+
+	for (i = 0; i < mdev->n_pipelines; i++) {
+		komeda_pipeline_destroy(mdev, mdev->pipelines[i]);
+		mdev->pipelines[i] = NULL;
+	}
+
+	mdev->n_pipelines = 0;
+
+	of_reserved_mem_device_release(dev);
+
+	if (funcs && funcs->cleanup)
+		funcs->cleanup(mdev);
+
+	if (mdev->reg_base) {
+		devm_iounmap(dev, mdev->reg_base);
+		mdev->reg_base = NULL;
+	}
+
+	if (mdev->aclk) {
+		clk_disable_unprepare(mdev->aclk);
+		devm_clk_put(dev, mdev->aclk);
+		mdev->aclk = NULL;
+	}
+
+	devm_kfree(dev, mdev);
+}
+
+int komeda_dev_resume(struct komeda_dev *mdev)
+{
+	clk_prepare_enable(mdev->aclk);
+
+	mdev->funcs->enable_irq(mdev);
+
+	if (mdev->iommu && mdev->funcs->connect_iommu)
+		if (mdev->funcs->connect_iommu(mdev))
+			DRM_ERROR("connect iommu failed.\n");
+
+	return 0;
+}
+
+int komeda_dev_suspend(struct komeda_dev *mdev)
+{
+	if (mdev->iommu && mdev->funcs->disconnect_iommu)
+		if (mdev->funcs->disconnect_iommu(mdev))
+			DRM_ERROR("disconnect iommu failed.\n");
+
+	mdev->funcs->disable_irq(mdev);
+
+	clk_disable_unprepare(mdev->aclk);
+
+	return 0;
+}