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SubjectRe: [PATCH 07/10] venus: helpers: add three more helper functions
On Fri, Jan 18, 2019 at 1:21 AM Stanimir Varbanov
<stanimir.varbanov@linaro.org> wrote:
>
> This adds three more helper functions:
> * for internal buffers reallocation, applicable when we are doing
> dynamic resolution change
> * for initial buffer processing of capture and output queue buffer
> types
>
> All of them will be needed for stateful Codec API support.
>
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
> ---
> drivers/media/platform/qcom/venus/helpers.c | 82 +++++++++++++++++++++
> drivers/media/platform/qcom/venus/helpers.h | 2 +
> 2 files changed, 84 insertions(+)
>
> diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
> index f33bbfea3576..637ce7b82d94 100644
> --- a/drivers/media/platform/qcom/venus/helpers.c
> +++ b/drivers/media/platform/qcom/venus/helpers.c
> @@ -322,6 +322,52 @@ int venus_helper_intbufs_free(struct venus_inst *inst)
> }
> EXPORT_SYMBOL_GPL(venus_helper_intbufs_free);
>
> +int venus_helper_intbufs_realloc(struct venus_inst *inst)

Does this function actually reallocate buffers? It seems to just free
what we had previously.


> +{
> + enum hfi_version ver = inst->core->res->hfi_version;
> + struct hfi_buffer_desc bd;
> + struct intbuf *buf, *n;
> + int ret;
> +
> + list_for_each_entry_safe(buf, n, &inst->internalbufs, list) {
> + if (buf->type == HFI_BUFFER_INTERNAL_PERSIST ||
> + buf->type == HFI_BUFFER_INTERNAL_PERSIST_1)
> + continue;
> +
> + memset(&bd, 0, sizeof(bd));
> + bd.buffer_size = buf->size;
> + bd.buffer_type = buf->type;
> + bd.num_buffers = 1;
> + bd.device_addr = buf->da;
> + bd.response_required = true;
> +
> + ret = hfi_session_unset_buffers(inst, &bd);
> +
> + dma_free_attrs(inst->core->dev, buf->size, buf->va, buf->da,
> + buf->attrs);
> +
> + list_del_init(&buf->list);
> + kfree(buf);
> + }
> +
> + ret = intbufs_set_buffer(inst, HFI_BUFFER_INTERNAL_SCRATCH(ver));
> + if (ret)
> + goto err;
> +
> + ret = intbufs_set_buffer(inst, HFI_BUFFER_INTERNAL_SCRATCH_1(ver));
> + if (ret)
> + goto err;
> +
> + ret = intbufs_set_buffer(inst, HFI_BUFFER_INTERNAL_SCRATCH_2(ver));
> + if (ret)
> + goto err;
> +
> + return 0;
> +err:
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(venus_helper_intbufs_realloc);
> +
> static u32 load_per_instance(struct venus_inst *inst)
> {
> u32 mbs;
> @@ -1050,6 +1096,42 @@ void venus_helper_vb2_stop_streaming(struct vb2_queue *q)
> }
> EXPORT_SYMBOL_GPL(venus_helper_vb2_stop_streaming);
>
> +int venus_helper_process_initial_cap_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);
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(venus_helper_process_initial_cap_bufs);
> +
> +int venus_helper_process_initial_out_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_src_buf_safe(m2m_ctx, buf, n) {
> + ret = session_process_buf(inst, &buf->vb);
> + if (ret) {
> + return_buf_error(inst, &buf->vb);
> + return ret;
> + }
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(venus_helper_process_initial_out_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 24faae5abd93..2ec1c1a8b416 100644
> --- a/drivers/media/platform/qcom/venus/helpers.h
> +++ b/drivers/media/platform/qcom/venus/helpers.h
> @@ -69,4 +69,6 @@ int venus_helper_intbufs_realloc(struct venus_inst *inst);
> int venus_helper_queue_dpb_bufs(struct venus_inst *inst);
> int venus_helper_unregister_bufs(struct venus_inst *inst);
> int venus_helper_load_scale_clocks(struct venus_core *core);
> +int venus_helper_process_initial_cap_bufs(struct venus_inst *inst);
> +int venus_helper_process_initial_out_bufs(struct venus_inst *inst);
> #endif
> --
> 2.17.1
>

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