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Message-ID: <20220613032232.23187-6-irui.wang@mediatek.com>
Date: Mon, 13 Jun 2022 11:22:29 +0800
From: Irui Wang <irui.wang@...iatek.com>
To: Hans Verkuil <hverkuil-cisco@...all.nl>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Tzung-Bi Shih <tzungbi@...omium.org>,
<angelogioacchino.delregno@...labora.com>,
<nicolas.dufresne@...labora.com>, <wenst@...omium.org>
CC: <Project_Global_Chrome_Upstream_Group@...iatek.com>,
<linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
Tomasz Figa <tfiga@...omium.org>, <xia.jiang@...iatek.com>,
<maoguang.meng@...iatek.com>, kyrie wu <kyrie.wu@...iatek.com>,
<srv_heupstream@...iatek.com>
Subject: [V3,5/8] media: mtk-jpegdec: add jpeg decode worker interface
From: kyrie wu <kyrie.wu@...iatek.com>
Add jpeg decoding worker to ensure that three HWs
run in parallel in MT8195.
Signed-off-by: kyrie wu <kyrie.wu@...iatek.com>
---
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 191 ++++++++++++++++++
.../platform/mediatek/jpeg/mtk_jpeg_core.h | 6 +
.../platform/mediatek/jpeg/mtk_jpeg_dec_hw.c | 35 ++--
3 files changed, 220 insertions(+), 12 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 6afed679f37b..25fa3ad8de3d 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -1100,6 +1100,176 @@ static void mtk_jpeg_enc_device_run(void *priv)
}
}
+static int mtk_jpegdec_select_hw(struct mtk_jpeg_ctx *ctx)
+{
+ struct mtk_jpegdec_comp_dev *comp_jpeg;
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+ unsigned long flags;
+ int hw_id = -1;
+ int i;
+
+ spin_lock_irqsave(&jpeg->hw_lock, flags);
+ for (i = 0; i < MTK_JPEGDEC_HW_MAX; i++) {
+ comp_jpeg = jpeg->dec_hw_dev[i];
+ if (comp_jpeg->hw_state == MTK_JPEG_HW_IDLE) {
+ hw_id = i;
+ comp_jpeg->hw_state = MTK_JPEG_HW_BUSY;
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&jpeg->hw_lock, flags);
+
+ return hw_id;
+}
+
+static int mtk_jpegdec_deselect_hw(struct mtk_jpeg_dev *jpeg, int hw_id)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&jpeg->hw_lock, flags);
+ jpeg->dec_hw_dev[hw_id]->hw_state =
+ MTK_JPEG_HW_IDLE;
+ spin_unlock_irqrestore(&jpeg->hw_lock, flags);
+
+ return 0;
+}
+
+static int mtk_jpegdec_set_hw_param(struct mtk_jpeg_ctx *ctx,
+ int hw_id,
+ struct vb2_v4l2_buffer *src_buf,
+ struct vb2_v4l2_buffer *dst_buf)
+{
+ struct mtk_jpegdec_comp_dev *jpeg =
+ ctx->jpeg->dec_hw_dev[hw_id];
+
+ jpeg->hw_param.curr_ctx = ctx;
+ jpeg->hw_param.src_buffer = src_buf;
+ jpeg->hw_param.dst_buffer = dst_buf;
+
+ return 0;
+}
+
+static void mtk_jpegdec_worker(struct work_struct *work)
+{
+ struct mtk_jpeg_ctx *ctx = container_of(work, struct mtk_jpeg_ctx,
+ jpeg_work);
+ struct mtk_jpegdec_comp_dev *comp_jpeg[MTK_JPEGDEC_HW_MAX];
+ enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
+ struct mtk_jpeg_src_buf *jpeg_src_buf, *jpeg_dst_buf;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+ atomic_t *hw_rdy[MTK_JPEGDEC_HW_MAX];
+ int ret, i, hw_id = 0;
+ struct mtk_jpeg_bs bs;
+ struct mtk_jpeg_fb fb;
+ unsigned long flags;
+
+ for (i = 0; i < MTK_JPEGDEC_HW_MAX; i++) {
+ comp_jpeg[i] = jpeg->dec_hw_dev[i];
+ hw_rdy[i] = &comp_jpeg[i]->hw_rdy;
+ }
+
+retry_select:
+ hw_id = mtk_jpegdec_select_hw(ctx);
+ if (hw_id < 0) {
+ ret = wait_event_interruptible_timeout(jpeg->dec_hw_wq,
+ (atomic_read(hw_rdy[0]) ||
+ atomic_read(hw_rdy[1]) ||
+ atomic_read(hw_rdy[2])) > 0,
+ MTK_JPEG_HW_TIMEOUT_MSEC);
+ if (ret != 0) {
+ dev_err(jpeg->dev, "%s : %d, all HW are busy\n",
+ __func__, __LINE__);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ return;
+ }
+
+ goto retry_select;
+ }
+
+ atomic_dec(&comp_jpeg[hw_id]->hw_rdy);
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ if (!src_buf)
+ goto getbuf_fail;
+
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ if (!dst_buf)
+ goto getbuf_fail;
+
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+
+ v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
+ jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
+ jpeg_dst_buf = mtk_jpeg_vb2_to_srcbuf(&dst_buf->vb2_buf);
+
+ if (mtk_jpeg_check_resolution_change(ctx,
+ &jpeg_src_buf->dec_param)) {
+ mtk_jpeg_queue_src_chg_event(ctx);
+ ctx->state = MTK_JPEG_SOURCE_CHANGE;
+ goto dec_end;
+ }
+
+ jpeg_src_buf->curr_ctx = ctx;
+ jpeg_src_buf->frame_num = ctx->total_frame_num;
+ jpeg_dst_buf->curr_ctx = ctx;
+ jpeg_dst_buf->frame_num = ctx->total_frame_num;
+ ctx->total_frame_num++;
+
+ mtk_jpegdec_set_hw_param(ctx, hw_id, src_buf, dst_buf);
+ ret = pm_runtime_get_sync(comp_jpeg[hw_id]->dev);
+ if (ret < 0) {
+ dev_err(jpeg->dev, "%s : %d, pm_runtime_get_sync fail !!!\n",
+ __func__, __LINE__);
+ goto dec_end;
+ }
+
+ ret = clk_prepare_enable(comp_jpeg[hw_id]->jdec_clk.clks->clk);
+ if (ret) {
+ dev_err(jpeg->dev, "%s : %d, jpegdec clk_prepare_enable fail\n",
+ __func__, __LINE__);
+ goto clk_end;
+ }
+
+ schedule_delayed_work(&comp_jpeg[hw_id]->job_timeout_work,
+ msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC));
+
+ mtk_jpeg_set_dec_src(ctx, &src_buf->vb2_buf, &bs);
+ if (mtk_jpeg_set_dec_dst(ctx,
+ &jpeg_src_buf->dec_param,
+ &dst_buf->vb2_buf, &fb)) {
+ dev_err(jpeg->dev, "%s : %d, mtk_jpeg_set_dec_dst fail\n",
+ __func__, __LINE__);
+ goto setdst_end;
+ }
+
+ spin_lock_irqsave(&comp_jpeg[hw_id]->hw_lock, flags);
+ mtk_jpeg_dec_reset(comp_jpeg[hw_id]->reg_base);
+ mtk_jpeg_dec_set_config(jpeg->reg_base,
+ &jpeg_src_buf->dec_param,
+ &bs,
+ &fb);
+ mtk_jpeg_dec_start(comp_jpeg[hw_id]->reg_base);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ spin_unlock_irqrestore(&comp_jpeg[hw_id]->hw_lock, flags);
+
+ return;
+
+setdst_end:
+ clk_disable_unprepare(comp_jpeg[hw_id]->jdec_clk.clks->clk);
+clk_end:
+ pm_runtime_put(comp_jpeg[hw_id]->dev);
+dec_end:
+ v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, buf_state);
+ v4l2_m2m_buf_done(dst_buf, buf_state);
+getbuf_fail:
+ atomic_inc(&comp_jpeg[hw_id]->hw_rdy);
+ mtk_jpegdec_deselect_hw(jpeg, hw_id);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+}
+
static void mtk_jpeg_dec_device_run(void *priv)
{
struct mtk_jpeg_ctx *ctx = priv;
@@ -1112,6 +1282,7 @@ static void mtk_jpeg_dec_device_run(void *priv)
struct mtk_jpeg_fb fb;
int ret;
+if (!jpeg->variant->is_multihw) {
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(&src_buf->vb2_buf);
@@ -1149,6 +1320,9 @@ static void mtk_jpeg_dec_device_run(void *priv)
v4l2_m2m_buf_done(src_buf, buf_state);
v4l2_m2m_buf_done(dst_buf, buf_state);
v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+} else {
+ queue_work(jpeg->workqueue, &ctx->jpeg_work);
+}
}
static int mtk_jpeg_dec_job_ready(void *priv)
@@ -1367,6 +1541,11 @@ static int mtk_jpeg_open(struct file *file)
"mediatek,jpegenc-multi-core")) {
INIT_WORK(&ctx->jpeg_work, mtk_jpegenc_worker);
}
+
+ if (of_property_read_bool(jpeg->dev->of_node,
+ "mediatek,jpegdec-multi-core")) {
+ INIT_WORK(&ctx->jpeg_work, mtk_jpegdec_worker);
+ }
}
INIT_LIST_HEAD(&ctx->dst_done_queue);
@@ -1518,6 +1697,18 @@ static int mtk_jpeg_probe(struct platform_device *pdev)
goto err_alloc_workqueue;
}
}
+
+ if (of_property_read_bool(pdev->dev.of_node,
+ "mediatek,jpegdec-multi-core")) {
+ init_waitqueue_head(&jpeg->dec_hw_wq);
+ jpeg->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME,
+ WQ_MEM_RECLAIM
+ | WQ_FREEZABLE);
+ if (!jpeg->workqueue) {
+ ret = -EINVAL;
+ goto err_alloc_workqueue;
+ }
+ }
}
ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev);
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
index 4709e5b8adbe..4da6d0621981 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
@@ -175,6 +175,10 @@ struct mtk_jpegdec_comp_dev {
int hw_id;
struct delayed_work job_timeout_work;
struct mtk_jpeg_hw_param hw_param;
+ atomic_t hw_rdy;
+ enum mtk_jpeg_hw_state hw_state;
+ //spinlock protecting the hw device resource
+ spinlock_t hw_lock;
};
/**
@@ -210,6 +214,8 @@ struct mtk_jpeg_dev {
void __iomem *reg_decbase[MTK_JPEGDEC_HW_MAX];
struct mtk_jpegdec_comp_dev *dec_hw_dev[MTK_JPEGDEC_HW_MAX];
+ wait_queue_head_t dec_hw_wq;
+ struct workqueue_struct *dec_workqueue;
};
/**
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
index 33f6bc193dc7..c502a65b2c93 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c
@@ -446,14 +446,19 @@ static void mtk_jpegdec_timeout_work(struct work_struct *work)
struct mtk_jpegdec_comp_dev *cjpeg =
container_of(work, struct mtk_jpegdec_comp_dev,
job_timeout_work.work);
+ struct mtk_jpeg_dev *master_jpeg = cjpeg->master_dev;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
src_buf = cjpeg->hw_param.src_buffer;
dst_buf = cjpeg->hw_param.dst_buffer;
+ dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
mtk_jpeg_dec_reset(cjpeg->reg_base);
clk_disable_unprepare(cjpeg->jdec_clk.clks->clk);
pm_runtime_put(cjpeg->dev);
+ cjpeg->hw_state = MTK_JPEG_HW_IDLE;
+ atomic_inc(&cjpeg->hw_rdy);
+ wake_up(&master_jpeg->dec_hw_wq);
v4l2_m2m_buf_done(src_buf, buf_state);
v4l2_m2m_buf_done(dst_buf, buf_state);
}
@@ -473,22 +478,20 @@ static irqreturn_t mtk_jpegdec_hw_irq_handler(int irq, void *priv)
cancel_delayed_work(&jpeg->job_timeout_work);
+ ctx = jpeg->hw_param.curr_ctx;
+ src_buf = jpeg->hw_param.src_buffer;
+ dst_buf = jpeg->hw_param.dst_buffer;
+ dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
+
irq_status = mtk_jpeg_dec_get_int_status(jpeg->reg_base);
dec_irq_ret = mtk_jpeg_dec_enum_result(irq_status);
if (dec_irq_ret >= MTK_JPEG_DEC_RESULT_UNDERFLOW)
mtk_jpeg_dec_reset(jpeg->reg_base);
- if (dec_irq_ret != MTK_JPEG_DEC_RESULT_EOF_DONE)
- return IRQ_NONE;
-
- ctx = v4l2_m2m_get_curr_priv(master_jpeg->m2m_dev);
- if (!ctx) {
- dev_err(jpeg->dev, "Context is NULL\n");
- return IRQ_HANDLED;
+ if (dec_irq_ret != MTK_JPEG_DEC_RESULT_EOF_DONE) {
+ dev_err(jpeg->dev, " Not MTK_JPEG_DEC_RESULT_EOF_DONE\n");
+ goto irq_handled;
}
- src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
- dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
- dst_buf->vb2_buf.timestamp = src_buf->vb2_buf.timestamp;
jpeg_src_buf =
container_of(src_buf, struct mtk_jpeg_src_buf, b);
@@ -496,12 +499,16 @@ static irqreturn_t mtk_jpegdec_hw_irq_handler(int irq, void *priv)
vb2_set_plane_payload(&dst_buf->vb2_buf, i,
jpeg_src_buf->dec_param.comp_size[i]);
+irq_handled:
buf_state = VB2_BUF_STATE_DONE;
-
v4l2_m2m_buf_done(src_buf, buf_state);
v4l2_m2m_buf_done(dst_buf, buf_state);
- v4l2_m2m_job_finish(master_jpeg->m2m_dev, ctx->fh.m2m_ctx);
pm_runtime_put(ctx->jpeg->dev);
+ clk_disable_unprepare(jpeg->jdec_clk.clks->clk);
+
+ jpeg->hw_state = MTK_JPEG_HW_IDLE;
+ wake_up(&master_jpeg->dec_hw_wq);
+ atomic_inc(&jpeg->hw_rdy);
return IRQ_HANDLED;
}
@@ -554,6 +561,10 @@ static int mtk_jpegdec_hw_probe(struct platform_device *pdev)
dev->plat_dev = pdev;
dev->dev = &pdev->dev;
+ atomic_set(&dev->hw_rdy, 1U);
+ spin_lock_init(&dev->hw_lock);
+ dev->hw_state = MTK_JPEG_HW_IDLE;
+
INIT_DELAYED_WORK(&dev->job_timeout_work,
mtk_jpegdec_timeout_work);
--
2.18.0
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