06fa5f757d
Add support for H.264 decoding using the stateless API, as supported by MT8183. This support takes advantage of the V4L2 H.264 reference list builders. [acourbot: refactor, cleanup and split] [tzungbi: fix missing kerneldoc issue] [hverkuil: fix trivial kerneldoc typo] Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com> Co-developed-by: Alexandre Courbot <acourbot@chromium.org> Signed-off-by: Alexandre Courbot <acourbot@chromium.org> Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
113 lines
2.3 KiB
C
113 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2016 MediaTek Inc.
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* Author: PC Chen <pc.chen@mediatek.com>
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* Tiffany Lin <tiffany.lin@mediatek.com>
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*/
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include "vdec_drv_if.h"
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#include "mtk_vcodec_dec.h"
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#include "vdec_drv_base.h"
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#include "mtk_vcodec_dec_pm.h"
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int vdec_if_init(struct mtk_vcodec_ctx *ctx, unsigned int fourcc)
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{
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int ret = 0;
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switch (fourcc) {
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case V4L2_PIX_FMT_H264_SLICE:
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ctx->dec_if = &vdec_h264_slice_if;
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break;
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case V4L2_PIX_FMT_H264:
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ctx->dec_if = &vdec_h264_if;
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break;
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case V4L2_PIX_FMT_VP8:
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ctx->dec_if = &vdec_vp8_if;
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break;
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case V4L2_PIX_FMT_VP9:
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ctx->dec_if = &vdec_vp9_if;
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break;
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default:
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return -EINVAL;
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}
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mtk_vdec_lock(ctx);
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mtk_vcodec_dec_clock_on(&ctx->dev->pm);
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ret = ctx->dec_if->init(ctx);
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mtk_vcodec_dec_clock_off(&ctx->dev->pm);
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mtk_vdec_unlock(ctx);
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return ret;
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}
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int vdec_if_decode(struct mtk_vcodec_ctx *ctx, struct mtk_vcodec_mem *bs,
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struct vdec_fb *fb, bool *res_chg)
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{
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int ret = 0;
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if (bs) {
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if ((bs->dma_addr & 63) != 0) {
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mtk_v4l2_err("bs dma_addr should 64 byte align");
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return -EINVAL;
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}
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}
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if (fb) {
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if (((fb->base_y.dma_addr & 511) != 0) ||
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((fb->base_c.dma_addr & 511) != 0)) {
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mtk_v4l2_err("frame buffer dma_addr should 512 byte align");
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return -EINVAL;
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}
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}
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if (!ctx->drv_handle)
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return -EIO;
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mtk_vdec_lock(ctx);
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mtk_vcodec_set_curr_ctx(ctx->dev, ctx);
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mtk_vcodec_dec_clock_on(&ctx->dev->pm);
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enable_irq(ctx->dev->dec_irq);
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ret = ctx->dec_if->decode(ctx->drv_handle, bs, fb, res_chg);
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disable_irq(ctx->dev->dec_irq);
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mtk_vcodec_dec_clock_off(&ctx->dev->pm);
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mtk_vcodec_set_curr_ctx(ctx->dev, NULL);
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mtk_vdec_unlock(ctx);
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return ret;
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}
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int vdec_if_get_param(struct mtk_vcodec_ctx *ctx, enum vdec_get_param_type type,
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void *out)
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{
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int ret = 0;
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if (!ctx->drv_handle)
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return -EIO;
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mtk_vdec_lock(ctx);
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ret = ctx->dec_if->get_param(ctx->drv_handle, type, out);
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mtk_vdec_unlock(ctx);
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return ret;
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}
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void vdec_if_deinit(struct mtk_vcodec_ctx *ctx)
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{
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if (!ctx->drv_handle)
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return;
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mtk_vdec_lock(ctx);
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mtk_vcodec_dec_clock_on(&ctx->dev->pm);
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ctx->dec_if->deinit(ctx->drv_handle);
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mtk_vcodec_dec_clock_off(&ctx->dev->pm);
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mtk_vdec_unlock(ctx);
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ctx->drv_handle = NULL;
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}
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