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| // SPDX-License-Identifier: GPL-2.0
| /*
| * Hantro VPU codec driver
| *
| * Copyright (C) 2018 Rockchip Electronics Co., Ltd.
| */
|
| #include "hantro.h"
|
| static const u8 zigzag[64] = {
| 0, 1, 8, 16, 9, 2, 3, 10,
| 17, 24, 32, 25, 18, 11, 4, 5,
| 12, 19, 26, 33, 40, 48, 41, 34,
| 27, 20, 13, 6, 7, 14, 21, 28,
| 35, 42, 49, 56, 57, 50, 43, 36,
| 29, 22, 15, 23, 30, 37, 44, 51,
| 58, 59, 52, 45, 38, 31, 39, 46,
| 53, 60, 61, 54, 47, 55, 62, 63
| };
|
| void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
| const struct v4l2_ctrl_mpeg2_quantization *ctrl)
| {
| int i, n;
|
| if (!qtable || !ctrl)
| return;
|
| for (i = 0; i < ARRAY_SIZE(zigzag); i++) {
| n = zigzag[i];
| qtable[n + 0] = ctrl->intra_quantiser_matrix[i];
| qtable[n + 64] = ctrl->non_intra_quantiser_matrix[i];
| qtable[n + 128] = ctrl->chroma_intra_quantiser_matrix[i];
| qtable[n + 192] = ctrl->chroma_non_intra_quantiser_matrix[i];
| }
| }
|
| int hantro_mpeg2_dec_init(struct hantro_ctx *ctx)
| {
| struct hantro_dev *vpu = ctx->dev;
|
| ctx->mpeg2_dec.qtable.size = ARRAY_SIZE(zigzag) * 4;
| ctx->mpeg2_dec.qtable.cpu =
| dma_alloc_coherent(vpu->dev,
| ctx->mpeg2_dec.qtable.size,
| &ctx->mpeg2_dec.qtable.dma,
| GFP_KERNEL);
| if (!ctx->mpeg2_dec.qtable.cpu)
| return -ENOMEM;
| return 0;
| }
|
| void hantro_mpeg2_dec_exit(struct hantro_ctx *ctx)
| {
| struct hantro_dev *vpu = ctx->dev;
|
| dma_free_coherent(vpu->dev,
| ctx->mpeg2_dec.qtable.size,
| ctx->mpeg2_dec.qtable.cpu,
| ctx->mpeg2_dec.qtable.dma);
| }
|
|
