147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Coda multi-standard codec IP
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*
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* Copyright (C) 2014 Philipp Zabel, Pengutronix
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*/
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#include <linux/bitops.h>
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#include "coda.h"
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#define XY2_INVERT BIT(7)
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#define XY2_ZERO BIT(6)
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#define XY2_TB_XOR BIT(5)
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#define XY2_XYSEL BIT(4)
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#define XY2_Y (1 << 4)
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#define XY2_X (0 << 4)
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#define XY2(luma_sel, luma_bit, chroma_sel, chroma_bit) \
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(((XY2_##luma_sel) | (luma_bit)) << 8 | \
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(XY2_##chroma_sel) | (chroma_bit))
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static const u16 xy2ca_zero_map[16] = {
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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};
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static const u16 xy2ca_tiled_map[16] = {
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XY2(Y, 0, Y, 0),
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XY2(Y, 1, Y, 1),
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XY2(Y, 2, Y, 2),
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XY2(Y, 3, X, 3),
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XY2(X, 3, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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XY2(ZERO, 0, ZERO, 0),
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};
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/*
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* RA[15:0], CA[15:8] are hardwired to contain the 24-bit macroblock
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* start offset (macroblock size is 16x16 for luma, 16x8 for chroma).
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* Bits CA[4:0] are set using XY2CA above. BA[3:0] seems to be unused.
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*/
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#define RBC_CA (0 << 4)
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#define RBC_BA (1 << 4)
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#define RBC_RA (2 << 4)
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#define RBC_ZERO (3 << 4)
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#define RBC(luma_sel, luma_bit, chroma_sel, chroma_bit) \
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(((RBC_##luma_sel) | (luma_bit)) << 6 | \
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(RBC_##chroma_sel) | (chroma_bit))
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static const u16 rbc2axi_tiled_map[32] = {
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RBC(ZERO, 0, ZERO, 0),
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RBC(ZERO, 0, ZERO, 0),
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RBC(ZERO, 0, ZERO, 0),
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RBC(CA, 0, CA, 0),
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RBC(CA, 1, CA, 1),
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RBC(CA, 2, CA, 2),
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RBC(CA, 3, CA, 3),
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RBC(CA, 4, CA, 8),
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RBC(CA, 8, CA, 9),
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RBC(CA, 9, CA, 10),
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RBC(CA, 10, CA, 11),
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RBC(CA, 11, CA, 12),
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RBC(CA, 12, CA, 13),
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RBC(CA, 13, CA, 14),
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RBC(CA, 14, CA, 15),
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RBC(CA, 15, RA, 0),
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RBC(RA, 0, RA, 1),
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RBC(RA, 1, RA, 2),
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RBC(RA, 2, RA, 3),
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RBC(RA, 3, RA, 4),
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RBC(RA, 4, RA, 5),
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RBC(RA, 5, RA, 6),
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RBC(RA, 6, RA, 7),
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RBC(RA, 7, RA, 8),
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RBC(RA, 8, RA, 9),
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RBC(RA, 9, RA, 10),
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RBC(RA, 10, RA, 11),
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RBC(RA, 11, RA, 12),
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RBC(RA, 12, RA, 13),
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RBC(RA, 13, RA, 14),
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RBC(RA, 14, RA, 15),
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RBC(RA, 15, ZERO, 0),
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};
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void coda_set_gdi_regs(struct coda_ctx *ctx)
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{
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struct coda_dev *dev = ctx->dev;
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const u16 *xy2ca_map;
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u32 xy2rbc_config;
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int i;
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switch (ctx->tiled_map_type) {
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case GDI_LINEAR_FRAME_MAP:
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default:
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xy2ca_map = xy2ca_zero_map;
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xy2rbc_config = 0;
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break;
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case GDI_TILED_FRAME_MB_RASTER_MAP:
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xy2ca_map = xy2ca_tiled_map;
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xy2rbc_config = CODA9_XY2RBC_TILED_MAP |
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CODA9_XY2RBC_CA_INC_HOR |
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(16 - 1) << 12 | (8 - 1) << 4;
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break;
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}
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for (i = 0; i < 16; i++)
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coda_write(dev, xy2ca_map[i],
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CODA9_GDI_XY2_CAS_0 + 4 * i);
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for (i = 0; i < 4; i++)
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coda_write(dev, XY2(ZERO, 0, ZERO, 0),
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CODA9_GDI_XY2_BA_0 + 4 * i);
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for (i = 0; i < 16; i++)
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coda_write(dev, XY2(ZERO, 0, ZERO, 0),
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CODA9_GDI_XY2_RAS_0 + 4 * i);
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coda_write(dev, xy2rbc_config, CODA9_GDI_XY2_RBC_CONFIG);
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if (xy2rbc_config) {
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for (i = 0; i < 32; i++)
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coda_write(dev, rbc2axi_tiled_map[i],
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CODA9_GDI_RBC2_AXI_0 + 4 * i);
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}
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}
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