From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- .../mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c | 201 +++++++++++++++++++++ 1 file changed, 201 insertions(+) create mode 100644 drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c (limited to 'drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_hw.c') 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 + */ + +#include +#include +#include +#include +#include +#include +#include + +#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"); -- cgit v1.2.3