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Subject[PATCH 1/3] venus: venc: Init the session only once in queue_setup
Date
Init the hfi session only once in queue_setup and also cover that
with inst->lock.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
---
drivers/media/platform/qcom/venus/venc.c | 98 ++++++++++++++++++------
1 file changed, 73 insertions(+), 25 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 4ecf78e30b59..3a2e449663d8 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -725,8 +725,10 @@ static int venc_init_session(struct venus_inst *inst)
int ret;

ret = hfi_session_init(inst, inst->fmt_cap->pixfmt);
- if (ret)
- return ret;
+ if (ret == -EINVAL)
+ return 0;
+ else if (ret)
+ goto deinit;

ret = venus_helper_set_input_resolution(inst, inst->width,
inst->height);
@@ -762,17 +764,13 @@ static int venc_out_num_buffers(struct venus_inst *inst, unsigned int *num)
struct hfi_buffer_requirements bufreq;
int ret;

- ret = venc_init_session(inst);
+ ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
if (ret)
return ret;

- ret = venus_helper_get_bufreq(inst, HFI_BUFFER_INPUT, &bufreq);
-
*num = bufreq.count_actual;

- hfi_session_deinit(inst);
-
- return ret;
+ return 0;
}

static int venc_queue_setup(struct vb2_queue *q,
@@ -781,7 +779,7 @@ static int venc_queue_setup(struct vb2_queue *q,
{
struct venus_inst *inst = vb2_get_drv_priv(q);
unsigned int num, min = 4;
- int ret = 0;
+ int ret;

if (*num_planes) {
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE &&
@@ -803,6 +801,17 @@ static int venc_queue_setup(struct vb2_queue *q,
return 0;
}

+ ret = mutex_lock_interruptible(&inst->lock);
+ if (ret)
+ return ret;
+
+ ret = venc_init_session(inst);
+
+ mutex_unlock(&inst->lock);
+
+ if (ret)
+ return ret;
+
switch (q->type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
*num_planes = inst->fmt_out->num_planes;
@@ -838,6 +847,54 @@ static int venc_queue_setup(struct vb2_queue *q,
return ret;
}

+static int venc_buf_init(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+
+ inst->buf_count++;
+
+ return venus_helper_vb2_buf_init(vb);
+}
+
+static void venc_release_session(struct venus_inst *inst)
+{
+ int ret, abort = 0;
+
+ mutex_lock(&inst->lock);
+
+ ret = hfi_session_deinit(inst);
+ abort = (ret && ret != -EINVAL) ? 1 : 0;
+
+ if (inst->session_error)
+ abort = 1;
+
+ if (abort)
+ hfi_session_abort(inst);
+
+ mutex_unlock(&inst->lock);
+
+ venus_pm_load_scale(inst);
+ INIT_LIST_HEAD(&inst->registeredbufs);
+ venus_pm_release_core(inst);
+}
+
+static void venc_buf_cleanup(struct vb2_buffer *vb)
+{
+ struct venus_inst *inst = vb2_get_drv_priv(vb->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct venus_buffer *buf = to_venus_buffer(vbuf);
+
+ mutex_lock(&inst->lock);
+ if (vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
+ if (!list_empty(&inst->registeredbufs))
+ list_del_init(&buf->reg_list);
+ mutex_unlock(&inst->lock);
+
+ inst->buf_count--;
+ if (!inst->buf_count)
+ venc_release_session(inst);
+}
+
static int venc_verify_conf(struct venus_inst *inst)
{
enum hfi_version ver = inst->core->res->hfi_version;
@@ -888,38 +945,28 @@ static int venc_start_streaming(struct vb2_queue *q, unsigned int count)
inst->sequence_cap = 0;
inst->sequence_out = 0;

- ret = venc_init_session(inst);
- if (ret)
- goto bufs_done;
-
ret = venus_pm_acquire_core(inst);
if (ret)
- goto deinit_sess;
-
- ret = venc_set_properties(inst);
- if (ret)
- goto deinit_sess;
+ goto error;

ret = venc_verify_conf(inst);
if (ret)
- goto deinit_sess;
+ goto error;

ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,
inst->num_output_bufs, 0);
if (ret)
- goto deinit_sess;
+ goto error;

ret = venus_helper_vb2_start_streaming(inst);
if (ret)
- goto deinit_sess;
+ goto error;

mutex_unlock(&inst->lock);

return 0;

-deinit_sess:
- hfi_session_deinit(inst);
-bufs_done:
+error:
venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_QUEUED);
if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
inst->streamon_out = 0;
@@ -940,7 +987,8 @@ static void venc_vb2_buf_queue(struct vb2_buffer *vb)

static const struct vb2_ops venc_vb2_ops = {
.queue_setup = venc_queue_setup,
- .buf_init = venus_helper_vb2_buf_init,
+ .buf_init = venc_buf_init,
+ .buf_cleanup = venc_buf_cleanup,
.buf_prepare = venus_helper_vb2_buf_prepare,
.start_streaming = venc_start_streaming,
.stop_streaming = venus_helper_vb2_stop_streaming,
--
2.17.1
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