Adding upstream version 6.6.15.upstream/6.6.15

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

1 files changed, 201 insertions, 0 deletions

diff --git a/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c
new file mode 100644
index 000000000..881d5de41
--- /dev/null
+++ b/drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Yunfei Dong <yunfei.dong@mediatek.com>
+ */
+
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include "mtk_vcodec_dec.h"
+#include "mtk_vcodec_dec_hw.h"
+#include "mtk_vcodec_dec_pm.h"
+#include "../common/mtk_vcodec_intr.h"
+
+static const struct of_device_id mtk_vdec_hw_match[] = {
+	{
+		.compatible = "mediatek,mtk-vcodec-lat",
+		.data = (void *)MTK_VDEC_LAT0,
+	},
+	{
+		.compatible = "mediatek,mtk-vcodec-core",
+		.data = (void *)MTK_VDEC_CORE,
+	},
+	{
+		.compatible = "mediatek,mtk-vcodec-lat-soc",
+		.data = (void *)MTK_VDEC_LAT_SOC,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mtk_vdec_hw_match);
+
+static int mtk_vdec_hw_prob_done(struct mtk_vcodec_dec_dev *vdec_dev)
+{
+	struct platform_device *pdev = vdec_dev->plat_dev;
+	struct device_node *subdev_node;
+	enum mtk_vdec_hw_id hw_idx;
+	const struct of_device_id *of_id;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(mtk_vdec_hw_match); i++) {
+		of_id = &mtk_vdec_hw_match[i];
+		subdev_node = of_find_compatible_node(NULL, NULL,
+						      of_id->compatible);
+		if (!subdev_node)
+			continue;
+
+		of_node_put(subdev_node);
+
+		hw_idx = (enum mtk_vdec_hw_id)(uintptr_t)of_id->data;
+		if (!test_bit(hw_idx, vdec_dev->subdev_bitmap)) {
+			dev_err(&pdev->dev, "vdec %d is not ready", hw_idx);
+			return -EAGAIN;
+		}
+	}
+
+	return 0;
+}
+
+static irqreturn_t mtk_vdec_hw_irq_handler(int irq, void *priv)
+{
+	struct mtk_vdec_hw_dev *dev = priv;
+	struct mtk_vcodec_dec_ctx *ctx;
+	u32 cg_status;
+	unsigned int dec_done_status;
+	void __iomem *vdec_misc_addr = dev->reg_base[VDEC_HW_MISC] +
+					VDEC_IRQ_CFG_REG;
+
+	ctx = mtk_vcodec_get_curr_ctx(dev->main_dev, dev->hw_idx);
+
+	/* check if HW active or not */
+	cg_status = readl(dev->reg_base[VDEC_HW_SYS] + VDEC_HW_ACTIVE_ADDR);
+	if (cg_status & VDEC_HW_ACTIVE_MASK) {
+		mtk_v4l2_vdec_err(ctx, "vdec active is not 0x0 (0x%08x)", cg_status);
+		return IRQ_HANDLED;
+	}
+
+	dec_done_status = readl(vdec_misc_addr);
+	if ((dec_done_status & MTK_VDEC_IRQ_STATUS_DEC_SUCCESS) !=
+	    MTK_VDEC_IRQ_STATUS_DEC_SUCCESS)
+		return IRQ_HANDLED;
+
+	/* clear interrupt */
+	writel(dec_done_status | VDEC_IRQ_CFG, vdec_misc_addr);
+	writel(dec_done_status & ~VDEC_IRQ_CLR, vdec_misc_addr);
+
+	wake_up_dec_ctx(ctx, MTK_INST_IRQ_RECEIVED, dev->hw_idx);
+
+	mtk_v4l2_vdec_dbg(3, ctx, "wake up ctx %d, dec_done_status=%x",
+			  ctx->id, dec_done_status);
+
+	return IRQ_HANDLED;
+}
+
+static int mtk_vdec_hw_init_irq(struct mtk_vdec_hw_dev *dev)
+{
+	struct platform_device *pdev = dev->plat_dev;
+	int ret;
+
+	dev->dec_irq = platform_get_irq(pdev, 0);
+	if (dev->dec_irq < 0)
+		return dev->dec_irq;
+
+	irq_set_status_flags(dev->dec_irq, IRQ_NOAUTOEN);
+	ret = devm_request_irq(&pdev->dev, dev->dec_irq,
+			       mtk_vdec_hw_irq_handler, 0, pdev->name, dev);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to install dev->dec_irq %d (%d)",
+			dev->dec_irq, ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int mtk_vdec_hw_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mtk_vdec_hw_dev *subdev_dev;
+	struct mtk_vcodec_dec_dev *main_dev;
+	const struct of_device_id *of_id;
+	int hw_idx;
+	int ret;
+
+	if (!dev->parent) {
+		dev_err(dev, "no parent for hardware devices.\n");
+		return -ENODEV;
+	}
+
+	main_dev = dev_get_drvdata(dev->parent);
+	if (!main_dev) {
+		dev_err(dev, "failed to get parent driver data");
+		return -EINVAL;
+	}
+
+	subdev_dev = devm_kzalloc(dev, sizeof(*subdev_dev), GFP_KERNEL);
+	if (!subdev_dev)
+		return -ENOMEM;
+
+	subdev_dev->plat_dev = pdev;
+	ret = mtk_vcodec_init_dec_clk(pdev, &subdev_dev->pm);
+	if (ret)
+		return ret;
+
+	ret = devm_pm_runtime_enable(&pdev->dev);
+	if (ret)
+		return ret;
+
+	of_id = of_match_device(mtk_vdec_hw_match, dev);
+	if (!of_id) {
+		dev_err(dev, "Can't get vdec subdev id.\n");
+		return -EINVAL;
+	}
+
+	hw_idx = (enum mtk_vdec_hw_id)(uintptr_t)of_id->data;
+	if (hw_idx >= MTK_VDEC_HW_MAX) {
+		dev_err(dev, "Hardware index %d not correct.\n", hw_idx);
+		return -EINVAL;
+	}
+
+	main_dev->subdev_dev[hw_idx] = subdev_dev;
+	subdev_dev->hw_idx = hw_idx;
+	subdev_dev->main_dev = main_dev;
+	subdev_dev->reg_base[VDEC_HW_SYS] = main_dev->reg_base[VDEC_HW_SYS];
+	set_bit(subdev_dev->hw_idx, main_dev->subdev_bitmap);
+
+	if (IS_SUPPORT_VDEC_HW_IRQ(hw_idx)) {
+		ret = mtk_vdec_hw_init_irq(subdev_dev);
+		if (ret)
+			return ret;
+	}
+
+	subdev_dev->reg_base[VDEC_HW_MISC] =
+		devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR((__force void *)subdev_dev->reg_base[VDEC_HW_MISC])) {
+		ret = PTR_ERR((__force void *)subdev_dev->reg_base[VDEC_HW_MISC]);
+		return ret;
+	}
+
+	if (!main_dev->subdev_prob_done)
+		main_dev->subdev_prob_done = mtk_vdec_hw_prob_done;
+
+	platform_set_drvdata(pdev, subdev_dev);
+	return 0;
+}
+
+static struct platform_driver mtk_vdec_driver = {
+	.probe	= mtk_vdec_hw_probe,
+	.driver	= {
+		.name	= "mtk-vdec-comp",
+		.of_match_table = mtk_vdec_hw_match,
+	},
+};
+module_platform_driver(mtk_vdec_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Mediatek video decoder hardware driver");