media: mtk-jpeg: refactor some variables

Refactor some variables to reduce redundancy
and optimize the initialization process.
Signed-off-by: Nkyrie wu <kyrie.wu@mediatek.com>
Signed-off-by: Nirui wang <irui.wang@mediatek.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c

@@ -1004,8 +1004,8 @@ static void mtk_jpegenc_worker(struct work_struct *work)
 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);
+		ret = wait_event_interruptible(jpeg->hw_wq,
+					       atomic_read(&jpeg->hw_rdy) > 0);
 		if (ret != 0 || (i++ > MTK_JPEG_MAX_RETRY_TIME)) {
 			dev_err(jpeg->dev, "%s : %d, all HW are busy\n",
 				__func__, __LINE__);
@@ -1016,7 +1016,7 @@ static void mtk_jpegenc_worker(struct work_struct *work)
 		goto retry_select;
 	}
 
-	atomic_dec(&jpeg->enchw_rdy);
+	atomic_dec(&jpeg->hw_rdy);
 	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	if (!src_buf)
 		goto getbuf_fail;
@@ -1073,7 +1073,7 @@ static void mtk_jpegenc_worker(struct work_struct *work)
 	v4l2_m2m_buf_done(src_buf, buf_state);
 	v4l2_m2m_buf_done(dst_buf, buf_state);
 getbuf_fail:
-	atomic_inc(&jpeg->enchw_rdy);
+	atomic_inc(&jpeg->hw_rdy);
 	mtk_jpegenc_put_hw(jpeg, hw_id);
 	v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
 }
@@ -1198,8 +1198,8 @@ static void mtk_jpegdec_worker(struct work_struct *work)
 retry_select:
 	hw_id = mtk_jpegdec_get_hw(ctx);
 	if (hw_id < 0) {
-		ret = wait_event_interruptible_timeout(jpeg->dec_hw_wq,
-						       atomic_read(&jpeg->dechw_rdy) > 0,
+		ret = wait_event_interruptible_timeout(jpeg->hw_wq,
+						       atomic_read(&jpeg->hw_rdy) > 0,
 						       MTK_JPEG_HW_TIMEOUT_MSEC);
 		if (ret != 0 || (i++ > MTK_JPEG_MAX_RETRY_TIME)) {
 			dev_err(jpeg->dev, "%s : %d, all HW are busy\n",
@@ -1211,7 +1211,7 @@ static void mtk_jpegdec_worker(struct work_struct *work)
 		goto retry_select;
 	}
 
-	atomic_dec(&jpeg->dechw_rdy);
+	atomic_dec(&jpeg->hw_rdy);
 	src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
 	if (!src_buf)
 		goto getbuf_fail;
@@ -1290,7 +1290,7 @@ static void mtk_jpegdec_worker(struct work_struct *work)
 	v4l2_m2m_buf_done(src_buf, buf_state);
 	v4l2_m2m_buf_done(dst_buf, buf_state);
 getbuf_fail:
-	atomic_inc(&jpeg->dechw_rdy);
+	atomic_inc(&jpeg->hw_rdy);
 	mtk_jpegdec_put_hw(jpeg, hw_id);
 	v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
 }
@@ -1710,6 +1710,8 @@ static int mtk_jpeg_single_core_init(struct platform_device *pdev,
 static int mtk_jpeg_probe(struct platform_device *pdev)
 {
 	struct mtk_jpeg_dev *jpeg;
+	struct device_node *child;
+	int num_child = 0;
 	int ret;
 
 	jpeg = devm_kzalloc(&pdev->dev, sizeof(*jpeg), GFP_KERNEL);
@@ -1733,6 +1735,19 @@ static int mtk_jpeg_probe(struct platform_device *pdev)
 			v4l2_err(&jpeg->v4l2_dev, "mtk_jpeg_single_core_init failed.");
 			return -EINVAL;
 		}
+	} else {
+		init_waitqueue_head(&jpeg->hw_wq);
+
+		for_each_child_of_node(pdev->dev.of_node, child)
+			num_child++;
+
+		atomic_set(&jpeg->hw_rdy, num_child);
+
+		jpeg->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME,
+							  WQ_MEM_RECLAIM
+							  | WQ_FREEZABLE);
+		if (!jpeg->workqueue)
+			return -EINVAL;
 	}
 
 	ret = v4l2_device_register(&pdev->dev, &jpeg->v4l2_dev);

drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.h

@@ -204,13 +204,10 @@ struct mtk_jpegdec_comp_dev {
  * @variant:		driver variant to be used
  * @reg_encbase:	jpg encode register base addr
  * @enc_hw_dev:	jpg encode hardware device
- * @enc_hw_wq:		jpg encode wait queue
- * @enchw_rdy:		jpg encode hw ready flag
+ * @hw_wq:		jpg wait queue
+ * @hw_rdy:		jpg hw ready flag
  * @reg_decbase:	jpg decode register base addr
  * @dec_hw_dev:	jpg decode hardware device
- * @dec_hw_wq:		jpg decode wait queue
- * @dec_workqueue:	jpg decode work queue
- * @dechw_rdy:		jpg decode hw ready flag
  */
 struct mtk_jpeg_dev {
 	struct mutex		lock;
@@ -227,14 +224,11 @@ struct mtk_jpeg_dev {
 
 	void __iomem *reg_encbase[MTK_JPEGENC_HW_MAX];
 	struct mtk_jpegenc_comp_dev *enc_hw_dev[MTK_JPEGENC_HW_MAX];
-	wait_queue_head_t enc_hw_wq;
-	atomic_t enchw_rdy;
+	wait_queue_head_t hw_wq;
+	atomic_t hw_rdy;
 
 	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;
-	atomic_t dechw_rdy;
 };
 
 /**

drivers/media/platform/mediatek/jpeg/mtk_jpeg_dec_hw.c

@@ -503,8 +503,8 @@ static void mtk_jpegdec_timeout_work(struct work_struct *work)
 	clk_disable_unprepare(cjpeg->jdec_clk.clks->clk);
 	pm_runtime_put(cjpeg->dev);
 	cjpeg->hw_state = MTK_JPEG_HW_IDLE;
-	atomic_inc(&master_jpeg->dechw_rdy);
-	wake_up(&master_jpeg->dec_hw_wq);
+	atomic_inc(&master_jpeg->hw_rdy);
+	wake_up(&master_jpeg->hw_wq);
 	v4l2_m2m_buf_done(src_buf, buf_state);
 	mtk_jpegdec_put_buf(cjpeg);
 }
@@ -551,8 +551,8 @@ static irqreturn_t mtk_jpegdec_hw_irq_handler(int irq, void *priv)
 	clk_disable_unprepare(jpeg->jdec_clk.clks->clk);
 
 	jpeg->hw_state = MTK_JPEG_HW_IDLE;
-	wake_up(&master_jpeg->dec_hw_wq);
-	atomic_inc(&master_jpeg->dechw_rdy);
+	wake_up(&master_jpeg->hw_wq);
+	atomic_inc(&master_jpeg->hw_rdy);
 
 	return IRQ_HANDLED;
 }
@@ -608,20 +608,12 @@ static int mtk_jpegdec_hw_probe(struct platform_device *pdev)
 	dev->plat_dev = pdev;
 	dev->dev = &pdev->dev;
 
-	init_waitqueue_head(&master_dev->dec_hw_wq);
-	master_dev->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME,
-							WQ_MEM_RECLAIM
-							| WQ_FREEZABLE);
-	if (!master_dev->workqueue)
-		return -EINVAL;
-
 	ret = devm_add_action_or_reset(&pdev->dev,
 				       mtk_jpegdec_destroy_workqueue,
 				       master_dev->workqueue);
 	if (ret)
 		return ret;
 
-	atomic_set(&master_dev->dechw_rdy, MTK_JPEGDEC_HW_MAX);
 	spin_lock_init(&dev->hw_lock);
 	dev->hw_state = MTK_JPEG_HW_IDLE;
 

drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c

@@ -248,8 +248,8 @@ static void mtk_jpegenc_timeout_work(struct work_struct *work)
 	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);
+	atomic_inc(&master_jpeg->hw_rdy);
+	wake_up(&master_jpeg->hw_wq);
 	v4l2_m2m_buf_done(src_buf, buf_state);
 	mtk_jpegenc_put_buf(cjpeg);
 }
@@ -288,8 +288,8 @@ static irqreturn_t mtk_jpegenc_hw_irq_handler(int irq, void *priv)
 	clk_disable_unprepare(jpeg->venc_clk.clks->clk);
 
 	jpeg->hw_state = MTK_JPEG_HW_IDLE;
-	wake_up(&master_jpeg->enc_hw_wq);
-	atomic_inc(&master_jpeg->enchw_rdy);
+	wake_up(&master_jpeg->hw_wq);
+	atomic_inc(&master_jpeg->hw_rdy);
 
 	return IRQ_HANDLED;
 }
@@ -340,14 +340,6 @@ static int mtk_jpegenc_hw_probe(struct platform_device *pdev)
 	dev->plat_dev = pdev;
 	dev->dev = &pdev->dev;
 
-	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;