[v2,7/8] venus: venc: Handle reset encoder state

Redesign the encoder driver to be compliant with stateful encoder
spec - specifically adds handling of Reset state.

Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

---
 drivers/media/platform/qcom/venus/venc.c | 155 ++++++++++++++++++-----
 1 file changed, 122 insertions(+), 33 deletions(-)

-- 
2.17.1

Hi Fritz,

On 1/2/21 2:13 AM, Fritz Koenig wrote:
> How should we resolve this patch in relation to the "venus: venc: Init

> the session only once in queue_setup" [1] patch?


I plan to make a pull request including 4/8 and 5/8 patches from this
series which are infact fixes.

After that I will send v2 on top of this pull-request. Unfortunately  I
have to postpone this series because I see issues when execute in a row
my tests for drain and reset encoder states.

> 

> "venus: venc: Init the session only once in queue_setup" comes after

> and reworks |venc_start_streaming| substantially.  This patch

> implements |venc_stop_streaming|, but maybe that is not needed with

> the newer patch?  Can this one just be dropped, or does it need

> rework?

> 

> -Fritz

> 

> [1]: https://lore.kernel.org/patchwork/patch/1349416/

> 

> On Wed, Nov 11, 2020 at 6:38 AM Stanimir Varbanov

> <stanimir.varbanov@linaro.org> wrote:

>>

>> Redesign the encoder driver to be compliant with stateful encoder

>> spec - specifically adds handling of Reset state.

>>

>> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>

>> ---

>>  drivers/media/platform/qcom/venus/venc.c | 155 ++++++++++++++++++-----

>>  1 file changed, 122 insertions(+), 33 deletions(-)

>>

>> diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c

>> index 7512e4a16270..f1ae89d45a54 100644

>> --- a/drivers/media/platform/qcom/venus/venc.c

>> +++ b/drivers/media/platform/qcom/venus/venc.c

>> @@ -907,6 +907,54 @@ static int venc_queue_setup(struct vb2_queue *q,

>>         return ret;

>>  }

>>

>> +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);

>> +

>> +       venus_pm_load_scale(inst);

>> +       INIT_LIST_HEAD(&inst->registeredbufs);

>> +       mutex_unlock(&inst->lock);

>> +

>> +       venus_pm_release_core(inst);

>> +}

>> +

>> +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_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;

>> @@ -938,49 +986,57 @@ static int venc_verify_conf(struct venus_inst *inst)

>>  static int venc_start_streaming(struct vb2_queue *q, unsigned int count)

>>  {

>>         struct venus_inst *inst = vb2_get_drv_priv(q);

>> +       struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;

>>         int ret;

>>

>>         mutex_lock(&inst->lock);

>>

>> -       if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)

>> +       v4l2_m2m_update_start_streaming_state(m2m_ctx, q);

>> +

>> +       if (V4L2_TYPE_IS_OUTPUT(q->type))

>>                 inst->streamon_out = 1;

>>         else

>>                 inst->streamon_cap = 1;

>>

>> -       if (!(inst->streamon_out & inst->streamon_cap)) {

>> -               mutex_unlock(&inst->lock);

>> -               return 0;

>> -       }

>> +       if (inst->streamon_out && inst->streamon_cap &&

>> +           inst->state == INST_UNINIT) {

>> +               venus_helper_init_instance(inst);

>>

>> -       venus_helper_init_instance(inst);

>> +               inst->sequence_cap = 0;

>> +               inst->sequence_out = 0;

>>

>> -       inst->sequence_cap = 0;

>> -       inst->sequence_out = 0;

>> +               ret = venc_init_session(inst);

>> +               if (ret)

>> +                       goto bufs_done;

>>

>> -       ret = venc_init_session(inst);

>> -       if (ret)

>> -               goto bufs_done;

>> +               ret = venus_pm_acquire_core(inst);

>> +               if (ret)

>> +                       goto deinit_sess;

>>

>> -       ret = venus_pm_acquire_core(inst);

>> -       if (ret)

>> -               goto deinit_sess;

>> +               ret = venc_verify_conf(inst);

>> +               if (ret)

>> +                       goto deinit_sess;

>>

>> -       ret = venc_set_properties(inst);

>> -       if (ret)

>> -               goto deinit_sess;

>> +               ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,

>> +                                               inst->num_output_bufs, 0);

>> +               if (ret)

>> +                       goto deinit_sess;

>>

>> -       ret = venc_verify_conf(inst);

>> -       if (ret)

>> -               goto deinit_sess;

>> +               ret = venus_helper_vb2_start_streaming(inst);

>> +               if (ret)

>> +                       goto deinit_sess;

>>

>> -       ret = venus_helper_set_num_bufs(inst, inst->num_input_bufs,

>> -                                       inst->num_output_bufs, 0);

>> -       if (ret)

>> -               goto deinit_sess;

>> +               venus_helper_process_initial_out_bufs(inst);

>> +               venus_helper_process_initial_cap_bufs(inst);

>> +       } else if (V4L2_TYPE_IS_CAPTURE(q->type) && inst->streamon_cap &&

>> +                  inst->streamon_out) {

>> +               ret = venus_helper_vb2_start_streaming(inst);

>> +               if (ret)

>> +                       goto bufs_done;

>>

>> -       ret = venus_helper_vb2_start_streaming(inst);

>> -       if (ret)

>> -               goto deinit_sess;

>> +               venus_helper_process_initial_out_bufs(inst);

>> +               venus_helper_process_initial_cap_bufs(inst);

>> +       }

>>

>>         mutex_unlock(&inst->lock);

>>

>> @@ -990,15 +1046,43 @@ static int venc_start_streaming(struct vb2_queue *q, unsigned int count)

>>         hfi_session_deinit(inst);

>>  bufs_done:

>>         venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_QUEUED);

>> -       if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)

>> +       if (V4L2_TYPE_IS_OUTPUT(q->type))

>>                 inst->streamon_out = 0;

>>         else

>>                 inst->streamon_cap = 0;

>> +

>>         mutex_unlock(&inst->lock);

>>         return ret;

>>  }

>>

>> -static void venc_vb2_buf_queue(struct vb2_buffer *vb)

>> +static void venc_stop_streaming(struct vb2_queue *q)

>> +{

>> +       struct venus_inst *inst = vb2_get_drv_priv(q);

>> +       struct v4l2_m2m_ctx *m2m_ctx = inst->m2m_ctx;

>> +       int ret = -EINVAL;

>> +

>> +       mutex_lock(&inst->lock);

>> +

>> +       v4l2_m2m_clear_state(m2m_ctx);

>> +

>> +       if (V4L2_TYPE_IS_CAPTURE(q->type)) {

>> +               ret = hfi_session_stop(inst);

>> +               ret |= hfi_session_unload_res(inst);

>> +               ret |= venus_helper_unregister_bufs(inst);

>> +               ret |= venus_helper_intbufs_free(inst);

>> +       }

>> +

>> +       venus_helper_buffers_done(inst, q->type, VB2_BUF_STATE_ERROR);

>> +

>> +       if (V4L2_TYPE_IS_OUTPUT(q->type))

>> +               inst->streamon_out = 0;

>> +       else

>> +               inst->streamon_cap = 0;

>> +

>> +       mutex_unlock(&inst->lock);

>> +}

>> +

>> +static void venc_buf_queue(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);

>> @@ -1022,11 +1106,12 @@ 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,

>> -       .buf_queue = venc_vb2_buf_queue,

>> +       .stop_streaming = venc_stop_streaming,

>> +       .buf_queue = venc_buf_queue,

>>  };

>>

>>  static void venc_buf_done(struct venus_inst *inst, unsigned int buf_type,

>> @@ -1084,8 +1169,12 @@ static const struct hfi_inst_ops venc_hfi_ops = {

>>         .event_notify = venc_event_notify,

>>  };

>>

>> +static void venc_m2m_device_run(void *priv)

>> +{

>> +}

>> +

>>  static const struct v4l2_m2m_ops venc_m2m_ops = {

>> -       .device_run = venus_helper_m2m_device_run,

>> +       .device_run = venc_m2m_device_run,

>>         .job_abort = venus_helper_m2m_job_abort,

>>  };

>>

>> --

>> 2.17.1

>>


-- 
regards,
Stan