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Subject[PATCH v1, 10/14] media: mtk-vcodec: Add core thread
Date
Core thread:
1. Gets lat_buf from core msg queue.
2. Proceeds core decode.
3. Puts the lat_buf back to lat msg queue.

Both H264 and VP9 rely on the core thread.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
---
.../platform/mtk-vcodec/mtk_vcodec_dec_drv.c | 9 ++++++
.../platform/mtk-vcodec/mtk_vcodec_drv.h | 2 ++
.../platform/mtk-vcodec/vdec_msg_queue.c | 32 +++++++++++++++++++
.../platform/mtk-vcodec/vdec_msg_queue.h | 6 ++++
4 files changed, 49 insertions(+)

diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
index f156a943ca62..1bcb070ef947 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_drv.c
@@ -423,6 +423,15 @@ static int mtk_vcodec_probe(struct platform_device *pdev)
goto err_res;
}

+ if (VDEC_LAT_ARCH(dev->vdec_pdata->hw_arch)) {
+ init_waitqueue_head(&dev->core_read);
+ INIT_LIST_HEAD(&dev->core_queue);
+ spin_lock_init(&dev->core_lock);
+ dev->kthread_core = kthread_run(vdec_msg_queue_core_thead, dev,
+ "mtk-%s", "core");
+ dev->num_core = 0;
+ }
+
for (i = 0; i < MTK_VDEC_HW_MAX; i++)
mutex_init(&dev->dec_mutex[i]);
mutex_init(&dev->dev_mutex);
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
index 68b3fbcd95b0..9a2a3821d4e1 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
@@ -34,6 +34,7 @@
#define MTK_VCODEC_MAX_PLANES 3
#define MTK_V4L2_BENCHMARK 0
#define WAIT_INTR_TIMEOUT_MS 1000
+#define VDEC_LAT_ARCH(hw_arch) ((hw_arch) >= MTK_VDEC_LAT_SINGLE_CORE)

/*
* enum mtk_hw_reg_idx - MTK hw register base index
@@ -519,6 +520,7 @@ struct mtk_vcodec_dev {
struct device_node *component_node[MTK_VDEC_HW_MAX];
int comp_idx;

+ struct task_struct *kthread_core;
wait_queue_head_t core_read;
struct list_head core_queue;
spinlock_t core_lock;
diff --git a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
index 9d684e5f051c..4841b7c17c41 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
+++ b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.c
@@ -232,3 +232,35 @@ void vdec_msg_queue_deinit(

msg_queue->init_done = false;
}
+
+int vdec_msg_queue_core_thead(void *data)
+{
+ struct mtk_vcodec_dev *dev = data;
+ struct vdec_lat_buf *lat_buf;
+ struct mtk_vcodec_ctx *ctx;
+
+ set_freezable();
+ for (;;) {
+ try_to_freeze();
+ if (kthread_should_stop())
+ break;
+
+ lat_buf = vdec_msg_queue_get_core_buf(dev);
+ if (!lat_buf)
+ continue;
+
+ ctx = lat_buf->ctx;
+ mtk_vcodec_set_curr_ctx(dev, ctx, MTK_VDEC_CORE);
+
+ if (!lat_buf->core_decode)
+ mtk_v4l2_err("Core decode callback func is NULL");
+ else
+ lat_buf->core_decode(lat_buf);
+
+ mtk_vcodec_set_curr_ctx(dev, NULL, MTK_VDEC_CORE);
+ vdec_msg_queue_buf_to_lat(lat_buf);
+ }
+
+ mtk_v4l2_debug(3, "Video Capture Thread End");
+ return 0;
+}
diff --git a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.h b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.h
index 62261702c464..dba127843f14 100644
--- a/drivers/media/platform/mtk-vcodec/vdec_msg_queue.h
+++ b/drivers/media/platform/mtk-vcodec/vdec_msg_queue.h
@@ -127,4 +127,10 @@ void vdec_msg_queue_deinit(
struct mtk_vcodec_ctx *ctx,
struct vdec_msg_queue *msg_queue);

+/**
+ * vdec_msg_queue_core_thead - used for core decoder.
+ * @data: private data used for each codec
+ */
+int vdec_msg_queue_core_thead(void *data);
+
#endif
--
2.18.0
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