media: mediatek: vcodec: add h264 decoder driver for mt8186

Add h264 decode driver to support mt8186. For the architecture
is single core, need to add new interface to decode.

Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c b/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
index a96f203..1d9e753 100644 (file)
--- a/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
+++ b/drivers/media/platform/mediatek/vcodec/vdec/vdec_h264_req_multi_if.c
@@ -140,6 +140,9 @@ struct vdec_h264_slice_share_info {
  * @vsi:               vsi used for lat
  * @vsi_core:          vsi used for core
  *
+ * @vsi_ctx:           Local VSI data for this decoding context
+ * @h264_slice_param:  the parameters that hardware use to decode
+ *
  * @resolution_changed:resolution changed
  * @realloc_mv_buf:    reallocate mv buffer
  * @cap_num_planes:    number of capture queue plane
@@ -157,6 +160,9 @@ struct vdec_h264_slice_inst {
        struct vdec_h264_slice_vsi *vsi;
        struct vdec_h264_slice_vsi *vsi_core;
 
+       struct vdec_h264_slice_vsi vsi_ctx;
+       struct vdec_h264_slice_lat_dec_param h264_slice_param;
+
        unsigned int resolution_changed;
        unsigned int realloc_mv_buf;
        unsigned int cap_num_planes;
@@ -208,6 +214,61 @@ static int vdec_h264_slice_fill_decode_parameters(struct vdec_h264_slice_inst *i
        return 0;
 }
 
+static int get_vdec_sig_decode_parameters(struct vdec_h264_slice_inst *inst)
+{
+       const struct v4l2_ctrl_h264_decode_params *dec_params;
+       const struct v4l2_ctrl_h264_sps *sps;
+       const struct v4l2_ctrl_h264_pps *pps;
+       const struct v4l2_ctrl_h264_scaling_matrix *scaling_matrix;
+       struct vdec_h264_slice_lat_dec_param *slice_param = &inst->h264_slice_param;
+       struct v4l2_h264_reflist_builder reflist_builder;
+       u8 *p0_reflist = slice_param->decode_params.ref_pic_list_p0;
+       u8 *b0_reflist = slice_param->decode_params.ref_pic_list_b0;
+       u8 *b1_reflist = slice_param->decode_params.ref_pic_list_b1;
+
+       dec_params =
+               mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_DECODE_PARAMS);
+       if (IS_ERR(dec_params))
+               return PTR_ERR(dec_params);
+
+       sps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SPS);
+       if (IS_ERR(sps))
+               return PTR_ERR(sps);
+
+       pps = mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_PPS);
+       if (IS_ERR(pps))
+               return PTR_ERR(pps);
+
+       scaling_matrix =
+               mtk_vdec_h264_get_ctrl_ptr(inst->ctx, V4L2_CID_STATELESS_H264_SCALING_MATRIX);
+       if (IS_ERR(scaling_matrix))
+               return PTR_ERR(scaling_matrix);
+
+       mtk_vdec_h264_update_dpb(dec_params, inst->dpb);
+
+       mtk_vdec_h264_copy_sps_params(&slice_param->sps, sps);
+       mtk_vdec_h264_copy_pps_params(&slice_param->pps, pps);
+       mtk_vdec_h264_copy_scaling_matrix(&slice_param->scaling_matrix, scaling_matrix);
+
+       mtk_vdec_h264_copy_decode_params(&slice_param->decode_params, dec_params, inst->dpb);
+       mtk_vdec_h264_fill_dpb_info(inst->ctx, &slice_param->decode_params,
+                                   slice_param->h264_dpb_info);
+
+       /* Build the reference lists */
+       v4l2_h264_init_reflist_builder(&reflist_builder, dec_params, sps, inst->dpb);
+       v4l2_h264_build_p_ref_list(&reflist_builder, p0_reflist);
+
+       v4l2_h264_build_b_ref_lists(&reflist_builder, b0_reflist, b1_reflist);
+       /* Adapt the built lists to the firmware's expectations */
+       mtk_vdec_h264_fixup_ref_list(p0_reflist, reflist_builder.num_valid);
+       mtk_vdec_h264_fixup_ref_list(b0_reflist, reflist_builder.num_valid);
+       mtk_vdec_h264_fixup_ref_list(b1_reflist, reflist_builder.num_valid);
+       memcpy(&inst->vsi_ctx.h264_slice_params, slice_param,
+              sizeof(inst->vsi_ctx.h264_slice_params));
+
+       return 0;
+}
+
 static void vdec_h264_slice_fill_decode_reflist(struct vdec_h264_slice_inst *inst,
                                                struct vdec_h264_slice_lat_dec_param *slice_param,
                                                struct vdec_h264_slice_share_info *share_info)
@@ -596,6 +657,120 @@ err_free_fb_out:
        return err;
 }
 
+static int vdec_h264_slice_single_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+                                        struct vdec_fb *unused, bool *res_chg)
+{
+       struct vdec_h264_slice_inst *inst = h_vdec;
+       struct vdec_vpu_inst *vpu = &inst->vpu;
+       struct mtk_video_dec_buf *src_buf_info, *dst_buf_info;
+       struct vdec_fb *fb;
+       unsigned char *buf;
+       unsigned int data[2], i;
+       u64 y_fb_dma, c_fb_dma;
+       struct mtk_vcodec_mem *mem;
+       int err, nal_start_idx;
+
+       /* bs NULL means flush decoder */
+       if (!bs)
+               return vpu_dec_reset(vpu);
+
+       fb = inst->ctx->dev->vdec_pdata->get_cap_buffer(inst->ctx);
+       src_buf_info = container_of(bs, struct mtk_video_dec_buf, bs_buffer);
+       dst_buf_info = container_of(fb, struct mtk_video_dec_buf, frame_buffer);
+
+       y_fb_dma = fb ? (u64)fb->base_y.dma_addr : 0;
+       c_fb_dma = fb ? (u64)fb->base_c.dma_addr : 0;
+       mtk_vcodec_debug(inst, "[h264-dec] [%d] y_dma=%llx c_dma=%llx",
+                        inst->ctx->decoded_frame_cnt, y_fb_dma, c_fb_dma);
+
+       inst->vsi_ctx.dec.bs_buf_addr = (u64)bs->dma_addr;
+       inst->vsi_ctx.dec.bs_buf_size = bs->size;
+       inst->vsi_ctx.dec.y_fb_dma = y_fb_dma;
+       inst->vsi_ctx.dec.c_fb_dma = c_fb_dma;
+       inst->vsi_ctx.dec.vdec_fb_va = (u64)(uintptr_t)fb;
+
+       v4l2_m2m_buf_copy_metadata(&src_buf_info->m2m_buf.vb,
+                                  &dst_buf_info->m2m_buf.vb, true);
+       err = get_vdec_sig_decode_parameters(inst);
+       if (err)
+               goto err_free_fb_out;
+
+       buf = (unsigned char *)bs->va;
+       nal_start_idx = mtk_vdec_h264_find_start_code(buf, bs->size);
+       if (nal_start_idx < 0) {
+               err = -EINVAL;
+               goto err_free_fb_out;
+       }
+       inst->vsi_ctx.dec.nal_info = buf[nal_start_idx];
+
+       *res_chg = inst->resolution_changed;
+       if (inst->resolution_changed) {
+               mtk_vcodec_debug(inst, "- resolution changed -");
+               if (inst->realloc_mv_buf) {
+                       err = vdec_h264_slice_alloc_mv_buf(inst, &inst->ctx->picinfo);
+                       inst->realloc_mv_buf = false;
+                       if (err)
+                               goto err_free_fb_out;
+               }
+               inst->resolution_changed = false;
+
+               for (i = 0; i < H264_MAX_MV_NUM; i++) {
+                       mem = &inst->mv_buf[i];
+                       inst->vsi_ctx.mv_buf_dma[i] = mem->dma_addr;
+               }
+       }
+
+       memcpy(inst->vpu.vsi, &inst->vsi_ctx, sizeof(inst->vsi_ctx));
+       err = vpu_dec_start(vpu, data, 2);
+       if (err)
+               goto err_free_fb_out;
+
+       /* wait decoder done interrupt */
+       err = mtk_vcodec_wait_for_done_ctx(inst->ctx, MTK_INST_IRQ_RECEIVED,
+                                          WAIT_INTR_TIMEOUT_MS, MTK_VDEC_CORE);
+       if (err)
+               mtk_vcodec_err(inst, "decode timeout: pic_%d",
+                              inst->ctx->decoded_frame_cnt);
+
+       inst->vsi->dec.timeout = !!err;
+       err = vpu_dec_end(vpu);
+       if (err)
+               goto err_free_fb_out;
+
+       memcpy(&inst->vsi_ctx, inst->vpu.vsi, sizeof(inst->vsi_ctx));
+       mtk_vcodec_debug(inst, "pic[%d] crc: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x",
+                        inst->ctx->decoded_frame_cnt,
+                        inst->vsi_ctx.dec.crc[0], inst->vsi_ctx.dec.crc[1],
+                        inst->vsi_ctx.dec.crc[2], inst->vsi_ctx.dec.crc[3],
+                        inst->vsi_ctx.dec.crc[4], inst->vsi_ctx.dec.crc[5],
+                        inst->vsi_ctx.dec.crc[6], inst->vsi_ctx.dec.crc[7]);
+
+       inst->ctx->decoded_frame_cnt++;
+       return 0;
+
+err_free_fb_out:
+       mtk_vcodec_err(inst, "dec frame number: %d err: %d",
+                      inst->ctx->decoded_frame_cnt, err);
+       return err;
+}
+
+static int vdec_h264_slice_decode(void *h_vdec, struct mtk_vcodec_mem *bs,
+                                 struct vdec_fb *unused, bool *res_chg)
+{
+       struct vdec_h264_slice_inst *inst = h_vdec;
+       int ret;
+
+       if (!h_vdec)
+               return -EINVAL;
+
+       if (inst->ctx->dev->vdec_pdata->hw_arch == MTK_VDEC_PURE_SINGLE_CORE)
+               ret = vdec_h264_slice_single_decode(h_vdec, bs, unused, res_chg);
+       else
+               ret = vdec_h264_slice_lat_decode(h_vdec, bs, unused, res_chg);
+
+       return ret;
+}
+
 static int vdec_h264_slice_get_param(void *h_vdec, enum vdec_get_param_type type,
                                     void *out)
 {
@@ -620,7 +795,7 @@ static int vdec_h264_slice_get_param(void *h_vdec, enum vdec_get_param_type type
 
 const struct vdec_common_if vdec_h264_slice_multi_if = {
        .init           = vdec_h264_slice_init,
-       .decode         = vdec_h264_slice_lat_decode,
+       .decode         = vdec_h264_slice_decode,
        .get_param      = vdec_h264_slice_get_param,
        .deinit         = vdec_h264_slice_deinit,
 };