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Subject[V11,5/7] mtk-jpegenc: add jpeg encode worker interface
Date
From: kyrie wu <kyrie.wu@mediatek.com>

Add jpeg encoding worker to ensure that two HWs
run in parallel in MT8195.

Signed-off-by: kyrie wu <kyrie.wu@mediatek.com>
Signed-off-by: irui wang <irui.wang@mediatek.com>

---
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 158 +++++++++++++++++-
.../platform/mediatek/jpeg/mtk_jpeg_core.h | 20 ++-
.../platform/mediatek/jpeg/mtk_jpeg_enc_hw.c | 42 +++--
3 files changed, 206 insertions(+), 14 deletions(-)

diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 3286e9606505..0a7fe7dfe605 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -105,10 +105,18 @@ static struct mtk_jpeg_fmt mtk_jpeg_dec_formats[] = {
#define MTK_JPEG_ENC_NUM_FORMATS ARRAY_SIZE(mtk_jpeg_enc_formats)
#define MTK_JPEG_DEC_NUM_FORMATS ARRAY_SIZE(mtk_jpeg_dec_formats)

+enum {
+ MTK_JPEG_BUF_FLAGS_INIT = 0,
+ MTK_JPEG_BUF_FLAGS_LAST_FRAME = 1,
+};
+
struct mtk_jpeg_src_buf {
+ u32 frame_num;
struct vb2_v4l2_buffer b;
struct list_head list;
struct mtk_jpeg_dec_param dec_param;
+
+ struct mtk_jpeg_ctx *curr_ctx;
};

static int debug;
@@ -907,6 +915,147 @@ static int mtk_jpeg_set_dec_dst(struct mtk_jpeg_ctx *ctx,
return 0;
}

+static int mtk_jpegenc_get_hw(struct mtk_jpeg_ctx *ctx)
+{
+ struct mtk_jpegenc_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_JPEGENC_HW_MAX; i++) {
+ comp_jpeg = jpeg->enc_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_jpegenc_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_jpegenc_comp_dev *jpeg = ctx->jpeg->enc_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 int mtk_jpegenc_put_hw(struct mtk_jpeg_dev *jpeg, int hw_id)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&jpeg->hw_lock, flags);
+ jpeg->enc_hw_dev[hw_id]->hw_state = MTK_JPEG_HW_IDLE;
+ spin_unlock_irqrestore(&jpeg->hw_lock, flags);
+
+ return 0;
+}
+
+static void mtk_jpegenc_worker(struct work_struct *work)
+{
+ struct mtk_jpegenc_comp_dev *comp_jpeg[MTK_JPEGENC_HW_MAX];
+ enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR;
+ struct mtk_jpeg_src_buf *jpeg_dst_buf;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ int ret, i, hw_id = 0;
+ unsigned long flags;
+
+ struct mtk_jpeg_ctx *ctx = container_of(work,
+ struct mtk_jpeg_ctx,
+ jpeg_work);
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+
+ for (i = 0; i < MTK_JPEGENC_HW_MAX; i++)
+ comp_jpeg[i] = jpeg->enc_hw_dev[i];
+
+retry_select:
+ hw_id = mtk_jpegenc_get_hw(ctx);
+ if (hw_id < 0) {
+ ret = wait_event_interruptible(jpeg->enc_hw_wq,
+ atomic_read(&jpeg->enchw_rdy) > 0);
+ 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(&jpeg->enchw_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);
+
+ mtk_jpegenc_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 enc_end;
+ }
+
+ ret = clk_prepare_enable(comp_jpeg[hw_id]->venc_clk.clks->clk);
+ if (ret) {
+ dev_err(jpeg->dev, "%s : %d, jpegenc clk_prepare_enable fail\n",
+ __func__, __LINE__);
+ goto enc_end;
+ }
+
+ schedule_delayed_work(&comp_jpeg[hw_id]->job_timeout_work,
+ msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC));
+
+ spin_lock_irqsave(&comp_jpeg[hw_id]->hw_lock, flags);
+ jpeg_dst_buf = mtk_jpeg_vb2_to_srcbuf(&dst_buf->vb2_buf);
+ jpeg_dst_buf->curr_ctx = ctx;
+ jpeg_dst_buf->frame_num = ctx->total_frame_num;
+ ctx->total_frame_num++;
+ mtk_jpeg_enc_reset(comp_jpeg[hw_id]->reg_base);
+ mtk_jpeg_set_enc_dst(ctx,
+ comp_jpeg[hw_id]->reg_base,
+ &dst_buf->vb2_buf);
+ mtk_jpeg_set_enc_src(ctx,
+ comp_jpeg[hw_id]->reg_base,
+ &src_buf->vb2_buf);
+ mtk_jpeg_set_enc_params(ctx, comp_jpeg[hw_id]->reg_base);
+ mtk_jpeg_enc_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;
+
+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);
+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)
{
struct mtk_jpeg_ctx *ctx = priv;
@@ -924,7 +1073,7 @@ static void mtk_jpeg_enc_device_run(void *priv)
goto enc_end;

schedule_delayed_work(&jpeg->job_timeout_work,
- msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC));
+ msecs_to_jiffies(MTK_JPEG_HW_TIMEOUT_MSEC));

spin_lock_irqsave(&jpeg->hw_lock, flags);

@@ -951,6 +1100,10 @@ static void mtk_jpeg_enc_device_run(void *priv)

static void mtk_jpeg_multicore_enc_device_run(void *priv)
{
+ struct mtk_jpeg_ctx *ctx = priv;
+ struct mtk_jpeg_dev *jpeg = ctx->jpeg;
+
+ queue_work(jpeg->workqueue, &ctx->jpeg_work);
}

static void mtk_jpeg_dec_device_run(void *priv)
@@ -1219,6 +1372,9 @@ 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);
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h
index caa9370ac8ac..ff7bd4467ae7 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;
@@ -101,8 +106,13 @@ struct mtk_jpegenc_clk {
* @plat_dev: platform device data
* @reg_base: JPEG registers mapping
* @master_dev: mtk_jpeg_dev device
- * @pm: mtk_jpegenc_pm
+ * @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;
@@ -113,6 +123,9 @@ struct mtk_jpegenc_comp_dev {
int jpegenc_irq;
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;
};

/**
@@ -145,6 +158,8 @@ 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;
};

/**
@@ -203,6 +218,9 @@ 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 4d0d254bd574..f7e40c010ec4 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 +222,33 @@ 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;
- }
-
- 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);
+ v4l2_warn(jpeg->dev, "Jpg Enc occurs unknown Err.");

result_size = mtk_jpeg_enc_get_file_size(jpeg->reg_base);
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, result_size);
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;
}
@@ -298,8 +305,19 @@ static int mtk_jpegenc_hw_probe(struct platform_device *pdev)
master_dev->is_jpgenc_multihw = true;
for (i = 0; i < MTK_JPEGENC_HW_MAX; i++)
master_dev->enc_hw_dev[i] = NULL;
+
+ init_waitqueue_head(&master_dev->enc_hw_wq);
+ master_dev->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME,
+ WQ_MEM_RECLAIM
+ | WQ_FREEZABLE);
+ if (!master_dev->workqueue)
+ return -EINVAL;
}

+ 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);

--
2.18.0
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