coda-gdi.c
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/*
* Coda multi-standard codec IP
*
* Copyright (C) 2014 Philipp Zabel, Pengutronix
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/bitops.h>
#include "coda.h"
#define XY2_INVERT BIT(7)
#define XY2_ZERO BIT(6)
#define XY2_TB_XOR BIT(5)
#define XY2_XYSEL BIT(4)
#define XY2_Y (1 << 4)
#define XY2_X (0 << 4)
#define XY2(luma_sel, luma_bit, chroma_sel, chroma_bit) \
(((XY2_##luma_sel) | (luma_bit)) << 8 | \
(XY2_##chroma_sel) | (chroma_bit))
static const u16 xy2ca_zero_map[16] = {
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
};
static const u16 xy2ca_tiled_map[16] = {
XY2(Y, 0, Y, 0),
XY2(Y, 1, Y, 1),
XY2(Y, 2, Y, 2),
XY2(Y, 3, X, 3),
XY2(X, 3, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
XY2(ZERO, 0, ZERO, 0),
};
/*
* RA[15:0], CA[15:8] are hardwired to contain the 24-bit macroblock
* start offset (macroblock size is 16x16 for luma, 16x8 for chroma).
* Bits CA[4:0] are set using XY2CA above. BA[3:0] seems to be unused.
*/
#define RBC_CA (0 << 4)
#define RBC_BA (1 << 4)
#define RBC_RA (2 << 4)
#define RBC_ZERO (3 << 4)
#define RBC(luma_sel, luma_bit, chroma_sel, chroma_bit) \
(((RBC_##luma_sel) | (luma_bit)) << 6 | \
(RBC_##chroma_sel) | (chroma_bit))
static const u16 rbc2axi_tiled_map[32] = {
RBC(ZERO, 0, ZERO, 0),
RBC(ZERO, 0, ZERO, 0),
RBC(ZERO, 0, ZERO, 0),
RBC(CA, 0, CA, 0),
RBC(CA, 1, CA, 1),
RBC(CA, 2, CA, 2),
RBC(CA, 3, CA, 3),
RBC(CA, 4, CA, 8),
RBC(CA, 8, CA, 9),
RBC(CA, 9, CA, 10),
RBC(CA, 10, CA, 11),
RBC(CA, 11, CA, 12),
RBC(CA, 12, CA, 13),
RBC(CA, 13, CA, 14),
RBC(CA, 14, CA, 15),
RBC(CA, 15, RA, 0),
RBC(RA, 0, RA, 1),
RBC(RA, 1, RA, 2),
RBC(RA, 2, RA, 3),
RBC(RA, 3, RA, 4),
RBC(RA, 4, RA, 5),
RBC(RA, 5, RA, 6),
RBC(RA, 6, RA, 7),
RBC(RA, 7, RA, 8),
RBC(RA, 8, RA, 9),
RBC(RA, 9, RA, 10),
RBC(RA, 10, RA, 11),
RBC(RA, 11, RA, 12),
RBC(RA, 12, RA, 13),
RBC(RA, 13, RA, 14),
RBC(RA, 14, RA, 15),
RBC(RA, 15, ZERO, 0),
};
void coda_set_gdi_regs(struct coda_ctx *ctx)
{
struct coda_dev *dev = ctx->dev;
const u16 *xy2ca_map;
u32 xy2rbc_config;
int i;
switch (ctx->tiled_map_type) {
case GDI_LINEAR_FRAME_MAP:
default:
xy2ca_map = xy2ca_zero_map;
xy2rbc_config = 0;
break;
case GDI_TILED_FRAME_MB_RASTER_MAP:
xy2ca_map = xy2ca_tiled_map;
xy2rbc_config = CODA9_XY2RBC_TILED_MAP |
CODA9_XY2RBC_CA_INC_HOR |
(16 - 1) << 12 | (8 - 1) << 4;
break;
}
for (i = 0; i < 16; i++)
coda_write(dev, xy2ca_map[i],
CODA9_GDI_XY2_CAS_0 + 4 * i);
for (i = 0; i < 4; i++)
coda_write(dev, XY2(ZERO, 0, ZERO, 0),
CODA9_GDI_XY2_BA_0 + 4 * i);
for (i = 0; i < 16; i++)
coda_write(dev, XY2(ZERO, 0, ZERO, 0),
CODA9_GDI_XY2_RAS_0 + 4 * i);
coda_write(dev, xy2rbc_config, CODA9_GDI_XY2_RBC_CONFIG);
if (xy2rbc_config) {
for (i = 0; i < 32; i++)
coda_write(dev, rbc2axi_tiled_map[i],
CODA9_GDI_RBC2_AXI_0 + 4 * i);
}
}