Il 27/06/22 04:56, Irui Wang ha scritto:
From: kyrie wu <kyrie.wu@xxxxxxxxxxxx>
Add jpeg encoding worker to ensure that two HWs
run in parallel in MT8195.
Signed-off-by: kyrie wu <kyrie.wu@xxxxxxxxxxxx>
---
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 208 ++++++++++++++++--
.../platform/mediatek/jpeg/mtk_jpeg_core.h | 30 ++-
.../platform/mediatek/jpeg/mtk_jpeg_enc_hw.c | 39 +++-
3 files changed, 240 insertions(+), 37 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 0c5c85a112ca..544673a527a0 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
..snip..
@@ -946,9 +1050,58 @@ static void mtk_jpeg_enc_device_run(void *priv)
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(&jpeg->enchw_rdy);
+ mtk_jpegenc_put_hw(jpeg, hw_id);
v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
}
+static void mtk_jpeg_enc_device_run(void *priv)
+{
That's not really the best thing to do here... if we're managing multi-core
hardware, this function would be a one-liner and we would never see variable
jpeg->is_jpgenc_multihw changing during runtime.
At this point, we can reduce checks and improve human readability by simply
having two separated functions for single-core vs multi-core...
static void mtk_jpeg_singlecore_enc_dev_run(void *priv) { .... blah .... }
and
static void mtk_jpeg_multicore_enc_dev_run(void *priv)
{
struct mtk_jpeg_ctx *ctx = priv;
queue_work(ctx->jpeg->workqueue, &ctx->jpeg_work);
}
Also because we're defining `.m2m_ops` into mt8195_jpegenc_drvdata, so it's
going to be as trivial as defining a new m2m_ops for it:
static const struct v4l2_m2m_ops mtk_jpeg_multicore_enc_m2m_ops = {
.device_run = mtk_jpeg_multicore_enc_dev_run,
};
Please fix that :-)
+ struct mtk_jpeg_ctx *ctx = priv;
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
+ unsigned long flags;
+ int ret;
+
+ if (!jpeg->is_jpgenc_multihw) {
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+
+ ret = pm_runtime_resume_and_get(jpeg->dev);
+ if (ret < 0)
+ goto enc_end;
+
+ schedule_delayed_work(&jpeg->job_timeout_work,
+ msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC));
+
+ spin_lock_irqsave(&jpeg->hw_lock, flags);
+
+ /*
+ * Resetting the hardware every frame is to ensure that all the
+ * registers are cleared. This is a hardware requirement.
+ */
+ mtk_jpeg_enc_reset(jpeg->reg_base);
+
+ mtk_jpeg_set_enc_src(ctx, jpeg->reg_base, &src_buf->vb2_buf);
+ mtk_jpeg_set_enc_dst(ctx, jpeg->reg_base, &dst_buf->vb2_buf);
+ mtk_jpeg_set_enc_params(ctx, jpeg->reg_base);
+ mtk_jpeg_enc_start(jpeg->reg_base);
+ spin_unlock_irqrestore(&jpeg->hw_lock, flags);
+ return;
+
+enc_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);
+ v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
+ } else {
+ queue_work(jpeg->workqueue, &ctx->jpeg_work);
+ }
+}
+
static void mtk_jpeg_dec_device_run(void *priv)
{
struct mtk_jpeg_ctx *ctx = priv;
@@ -1211,6 +1364,9 @@ static int mtk_jpeg_open(struct file *file)
goto free;
}
+ if (jpeg->is_jpgenc_multihw)
+ INIT_WORK(&ctx->jpeg_work, mtk_jpegenc_worker);
+
v4l2_fh_init(&ctx->fh, vfd);
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
@@ -1355,6 +1511,18 @@ static int mtk_jpeg_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to init clk\n");
goto err_clk_init;
}
+ } else {
+ if (of_property_read_bool(pdev->dev.of_node,
+ "mediatek,jpegenc-multi-core")) {
This check is redundant (and will be wrong in the jpegdec series): you're entering
this branch only `if (jpeg->is_jpgenc_multihw)`, and this is initialized a little
earlier when reading the very same devicetree property.
So, for this series, remove the redundant check; for the jpegdec series, don't
recheck with of_property_read_bool, but check for `if (jpeg->is_jpgenc_multihw)`
and then theck for `if (jpeg->is_jpgdec_multihw)`.
+ init_waitqueue_head(&jpeg->enc_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);
@@ -1423,6 +1591,8 @@ static int mtk_jpeg_probe(struct platform_device *pdev)
err_clk_init:
+err_alloc_workqueue:
+
You aren't doing anything at all here, so this label is not required. Remove it.
err_req_irq:
return ret;
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
index 55719bd1b0fb..2fc20c6e06f4 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
@@ -75,6 +75,11 @@ struct mtk_jpeg_variant {
u32 cap_q_default_fourcc;
};
+enum mtk_jpeg_hw_state {
+ MTK_JPEG_HW_IDLE = 0,
+ MTK_JPEG_HW_BUSY = 1,
+};
+
struct mtk_jpeg_hw_param {
struct vb2_v4l2_buffer *src_buffer;
struct vb2_v4l2_buffer *dst_buffer;
@@ -97,12 +102,17 @@ struct mtk_jpegenc_clk {
/**
* struct mtk_jpegenc_comp_dev - JPEG COREX abstraction
- * @dev: JPEG device
- * @plat_dev: platform device data
- * @reg_base: JPEG registers mapping
- * @master_dev: mtk_jpeg_dev device
- * @pm: mtk_jpegenc_pm
- * @jpegenc_irq: jpeg encode irq num
+ * @dev: JPEG device
+ * @plat_dev: platform device data
+ * @reg_base: JPEG registers mapping
+ * @master_dev: mtk_jpeg_dev device
+ * @venc_clk: mtk_jpegenc_clk
+ * @jpegenc_irq: jpeg encode irq num
+ * @job_timeout_work: handle jpeg encode work
+ * @hw_param: record hw param
+ * @hw_rdy: record hw ready
+ * @hw_state: record hw state
+ * @hw_lock: spinlock protecting the hw device resource
*/
struct mtk_jpegenc_comp_dev {
struct device *dev;
@@ -114,6 +124,9 @@ struct mtk_jpegenc_comp_dev {
int hw_id;
struct delayed_work job_timeout_work;
struct mtk_jpeg_hw_param hw_param;
+ enum mtk_jpeg_hw_state hw_state;
+ //spinlock protecting the hw device resource
+ spinlock_t hw_lock;
};
/**
@@ -146,6 +159,8 @@ struct mtk_jpeg_dev {
void __iomem *reg_encbase[MTK_JPEGENC_HW_MAX];
struct mtk_jpegenc_comp_dev *enc_hw_dev[MTK_JPEGENC_HW_MAX];
bool is_jpgenc_multihw;
+ wait_queue_head_t enc_hw_wq;
+ atomic_t enchw_rdy;
};
/**
@@ -204,6 +219,9 @@ struct mtk_jpeg_ctx {
u8 enc_quality;
u8 restart_interval;
struct v4l2_ctrl_handler ctrl_hdl;
+
+ struct work_struct jpeg_work;
+ u32 total_frame_num;
};
#endif /* _MTK_JPEG_CORE_H */
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
index bea62013ce7d..8e1840137c34 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c
@@ -192,6 +192,7 @@ static void mtk_jpegenc_timeout_work(struct work_struct *work)
container_of(dly_work,
struct mtk_jpegenc_comp_dev,
job_timeout_work);
+ struct mtk_jpeg_dev *master_jpeg = cjpeg->master_dev;
enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
@@ -202,6 +203,9 @@ static void mtk_jpegenc_timeout_work(struct work_struct *work)
mtk_jpeg_enc_reset(cjpeg->reg_base);
clk_disable_unprepare(cjpeg->venc_clk.clks->clk);
pm_runtime_put(cjpeg->dev);
+ cjpeg->hw_state = MTK_JPEG_HW_IDLE;
+ atomic_inc(&master_jpeg->enchw_rdy);
+ wake_up(&master_jpeg->enc_hw_wq);
v4l2_m2m_buf_done(src_buf, buf_state);
}
@@ -218,30 +222,37 @@ static irqreturn_t mtk_jpegenc_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;
+ v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
+
irq_status = readl(jpeg->reg_base + JPEG_ENC_INT_STS) &
JPEG_ENC_INT_STATUS_MASK_ALLIRQ;
if (irq_status)
writel(0, jpeg->reg_base + JPEG_ENC_INT_STS);
- if (!(irq_status & JPEG_ENC_INT_STATUS_DONE))
- return IRQ_NONE;
-
- ctx = v4l2_m2m_get_curr_priv(master_jpeg->m2m_dev);
- if (!ctx) {
- v4l2_err(&master_jpeg->v4l2_dev, "Context is NULL\n");
- return IRQ_HANDLED;
+ if (!(irq_status & JPEG_ENC_INT_STATUS_DONE)) {
+ dev_err(jpeg->dev, " Not JPEG_ENC_INT_STATUS_DONE\n");
Please be more descriptive in error messages. Also, should this really be
a dev_err?!?
+ 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);
- v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
-
result_size = mtk_jpeg_enc_get_file_size(jpeg->reg_base);
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, result_size);
+
+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->venc_clk.clks->clk);
+ if (!list_empty(&ctx->fh.m2m_ctx->out_q_ctx.rdy_queue) ||
+ !list_empty(&ctx->fh.m2m_ctx->cap_q_ctx.rdy_queue)) {
+ queue_work(master_jpeg->workqueue, &ctx->jpeg_work);
+ }
+
+ jpeg->hw_state = MTK_JPEG_HW_IDLE;
+ wake_up(&master_jpeg->enc_hw_wq);
+ atomic_inc(&master_jpeg->enchw_rdy);
return IRQ_HANDLED;
}
@@ -294,6 +305,10 @@ static int mtk_jpegenc_hw_probe(struct platform_device *pdev)
dev->plat_dev = pdev;
dev->dev = &pdev->dev;
+ atomic_set(&master_dev->enchw_rdy, MTK_JPEGENC_HW_MAX);
+ spin_lock_init(&dev->hw_lock);
+ dev->hw_state = MTK_JPEG_HW_IDLE;
+
INIT_DELAYED_WORK(&dev->job_timeout_work,
mtk_jpegenc_timeout_work);
