linux-kernel - [PATCH] media: venus: queue initial buffers

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Date:   Tue,  9 Oct 2018 13:20:26 +0530
From:   Malathi Gottam <mgottam@...eaurora.org>
To:     stanimir.varbanov@...aro.org, hverkuil@...all.nl,
        mchehab@...nel.org
Cc:     linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, acourbot@...omium.org,
        vgarodia@...eaurora.org, mgottam@...eaurora.org
Subject: [PATCH] media: venus: queue initial buffers

Buffers can be queued to driver before the planes are
set to start streaming. Queue those buffers to firmware
once start streaming is called on both the planes.

Signed-off-by: Malathi Gottam <mgottam@...eaurora.org>
---
 drivers/media/platform/qcom/venus/helpers.c | 22 ++++++++++++++++++++++
 drivers/media/platform/qcom/venus/helpers.h |  1 +
 drivers/media/platform/qcom/venus/venc.c    |  5 +++++
 3 files changed, 28 insertions(+)

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index e436385..2679adb 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -1041,6 +1041,28 @@ void venus_helper_vb2_stop_streaming(struct vb2_queue *q)
 }
 EXPORT_SYMBOL_GPL(venus_helper_vb2_stop_streaming);
 
+int venus_helper_queue_initial_bufs(struct venus_inst *inst)
+{
+	struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;
+	struct v4l2_m2m_buffer *buf, *n;
+	int ret;
+
+	v4l2_m2m_for_each_dst_buf_safe(m2m_ctx, buf, n)	{
+		ret = session_process_buf(inst, &buf->vb);
+		if (ret)
+			return_buf_error(inst, &buf->vb);
+	}
+
+	v4l2_m2m_for_each_src_buf_safe(m2m_ctx, buf, n) {
+		ret = session_process_buf(inst, &buf->vb);
+		if (ret)
+			return_buf_error(inst, &buf->vb);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(venus_helper_queue_initial_bufs);
+
 int venus_helper_vb2_start_streaming(struct venus_inst *inst)
 {
 	struct venus_core *core = inst->core;
diff --git a/drivers/media/platform/qcom/venus/helpers.h b/drivers/media/platform/qcom/venus/helpers.h
index 2475f284..f4d76ab 100644
--- a/drivers/media/platform/qcom/venus/helpers.h
+++ b/drivers/media/platform/qcom/venus/helpers.h
@@ -31,6 +31,7 @@ void venus_helper_buffers_done(struct venus_inst *inst,
 int venus_helper_vb2_start_streaming(struct venus_inst *inst);
 void venus_helper_m2m_device_run(void *priv);
 void venus_helper_m2m_job_abort(void *priv);
+int venus_helper_queue_initial_bufs(struct venus_inst *inst);
 int venus_helper_get_bufreq(struct venus_inst *inst, u32 type,
 			    struct hfi_buffer_requirements *req);
 u32 venus_helper_get_framesz_raw(u32 hfi_fmt, u32 width, u32 height);
diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index ce85962..ef11495 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -989,6 +989,11 @@ static int venc_start_streaming(struct vb2_queue *q, unsigned int count)
 	if (ret)
 		goto deinit_sess;
 
+	ret = venus_helper_queue_initial_bufs(inst);
+	if (ret)
+		goto deinit_sess;
+	}
+
 	mutex_unlock(&inst->lock);
 
 	return 0;
-- 
1.9.1