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Date: Wed, 29 Dec 2021 13:36:33 +0800
From: Tzung-Bi Shih <tzungbi@...gle.com>
To: Yunfei Dong <yunfei.dong@...iatek.com>
Cc: Alexandre Courbot <acourbot@...omium.org>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Tzung-Bi Shih <tzungbi@...omium.org>,
Tiffany Lin <tiffany.lin@...iatek.com>,
Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Tomasz Figa <tfiga@...gle.com>,
Hsin-Yi Wang <hsinyi@...omium.org>,
Fritz Koenig <frkoenig@...omium.org>,
Dafna Hirschfeld <dafna.hirschfeld@...labora.com>,
Benjamin Gaignard <benjamin.gaignard@...labora.com>,
Daniel Vetter <daniel@...ll.ch>,
dri-devel <dri-devel@...ts.freedesktop.org>,
Irui Wang <irui.wang@...iatek.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Steve Cho <stevecho@...omium.org>, linux-media@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, srv_heupstream@...iatek.com,
linux-mediatek@...ts.infradead.org,
Project_Global_Chrome_Upstream_Group@...iatek.com
Subject: Re: [PATCH v2, 03/12] media: mtk-vcodec: get capture queue buffer
size from scp
On Tue, Dec 28, 2021 at 05:41:37PM +0800, Yunfei Dong wrote:
> From: Yunfei Dong <yunfei.dong@...iatek.corp-partner.google.com>
[...]
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> index 130ecef2e766..87891ebd7246 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec.c
> @@ -466,6 +466,8 @@ static int vidioc_vdec_s_fmt(struct file *file, void *priv,
> }
> ctx->state = MTK_STATE_INIT;
> }
> + } else {
> + ctx->capture_fourcc = fmt->fourcc;
> }
>
> /*
> diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> index a23a7646437c..95e07cf2cd3e 100644
> --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h
> @@ -277,6 +277,7 @@ struct vdec_pic_info {
> * to be used with encoder and stateful decoder.
> * @is_flushing: set to true if flushing is in progress.
> * @current_codec: current set input codec, in V4L2 pixel format
> + * @capture_fourcc: capture queue type in V4L2 pixel format
> *
> * @colorspace: enum v4l2_colorspace; supplemental to pixelformat
> * @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
> @@ -322,6 +323,7 @@ struct mtk_vcodec_ctx {
> bool is_flushing;
>
> u32 current_codec;
> + u32 capture_fourcc;
What is the purpose of capture_fourcc? It is not used.
> +/**
> + * struct vdec_ap_ipi_get_param - for AP_IPIMSG_SET_PARAM
> + * @msg_id : AP_IPIMSG_DEC_START
> + * @inst_id : instance ID. Used if the ABI version >= 2.
> + * @data : picture information
> + * @param_type : get param type
> + * @codec_type : Codec fourcc
> + */
> +struct vdec_ap_ipi_get_param {
> + uint32_t msg_id;
> + uint32_t inst_id;
> + uint32_t data[4];
> + uint32_t param_type;
> + uint32_t codec_type;
> +};
Are AP_IPIMSG_SET_PARAM and AP_IPIMSG_DEC_START typos?
> +/**
> + * struct vdec_vpu_ipi_init_ack - for VPU_IPIMSG_DEC_INIT_ACK
> + * @msg_id : VPU_IPIMSG_DEC_INIT_ACK
> + * @status : VPU exeuction result
> + * @ap_inst_addr : AP vcodec_vpu_inst instance address
> + * @data : picture information from SCP.
> + * @param_type : get param type
> + */
> +struct vdec_vpu_ipi_get_param_ack {
> + uint32_t msg_id;
> + int32_t status;
> + uint64_t ap_inst_addr;
> + uint32_t data[4];
> + uint32_t param_type;
> + uint32_t reserved;
> +};
Same here: is VPU_IPIMSG_DEC_INIT_ACK a typo?
What is the purpose of the "reserved" field?
> diff --git a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.c
[...]
> +static void handle_get_param_msg_ack(
> + const struct vdec_vpu_ipi_get_param_ack *msg)
> +{
> + struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
> + (unsigned long)msg->ap_inst_addr;
Does it really need to cast twice?
> +
> + mtk_vcodec_debug(vpu, "+ ap_inst_addr = 0x%llx", msg->ap_inst_addr);
> +
> + /* param_type is enum vdec_get_param_type */
> + switch(msg->param_type) {
> + case 2:
What is 2? Is it GET_PARAM_PIC_INFO?
> +int vpu_dec_get_param(struct vdec_vpu_inst *vpu, uint32_t *data,
> + unsigned int len, unsigned int param_type)
> +{
> + struct vdec_ap_ipi_get_param msg;
> + int i;
> + int err;
> +
> + mtk_vcodec_debug_enter(vpu);
> +
> + if (len > ARRAY_SIZE(msg.data)) {
> + mtk_vcodec_err(vpu, "invalid len = %d\n", len);
> + return -EINVAL;
> + }
> +
> + memset(&msg, 0, sizeof(msg));
> + msg.msg_id = AP_IPIMSG_DEC_GET_PARAM;
> + msg.inst_id = vpu->inst_id;
> + for (i = 0; i < len; i++)
> + msg.data[i] = data[i];
Would it be more concise if using memcpy?
> diff --git a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
> index 4cb3c7f5a3ad..963f8d4877b7 100644
> --- a/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
> +++ b/drivers/media/platform/mtk-vcodec/vdec_vpu_if.h
> @@ -28,6 +28,8 @@ struct mtk_vcodec_ctx;
> * @wq : wait queue to wait VPU message ack
> * @handler : ipi handler for each decoder
> * @codec_type : use codec type to separate different codecs
> + * @capture_type : used capture type to separate different capture format
> + * @fb_sz : frame buffer size of each plane
> */
> struct vdec_vpu_inst {
> int id;
> @@ -42,6 +44,8 @@ struct vdec_vpu_inst {
> wait_queue_head_t wq;
> mtk_vcodec_ipi_handler handler;
> unsigned int codec_type;
> + unsigned int capture_type;
> + unsigned int fb_sz[2];
> };
capture_type is not used in the patch.
Does fb_sz take effect in later patches?
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