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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved
*/
#include "dpu_hw_mdss.h"
#include "dpu_hwio.h"
#include "dpu_hw_catalog.h"
#include "dpu_hw_wb.h"
#include "dpu_formats.h"
#include "dpu_kms.h"
#define WB_DST_FORMAT 0x000
#define WB_DST_OP_MODE 0x004
#define WB_DST_PACK_PATTERN 0x008
#define WB_DST0_ADDR 0x00C
#define WB_DST1_ADDR 0x010
#define WB_DST2_ADDR 0x014
#define WB_DST3_ADDR 0x018
#define WB_DST_YSTRIDE0 0x01C
#define WB_DST_YSTRIDE1 0x020
#define WB_DST_YSTRIDE1 0x020
#define WB_DST_DITHER_BITDEPTH 0x024
#define WB_DST_MATRIX_ROW0 0x030
#define WB_DST_MATRIX_ROW1 0x034
#define WB_DST_MATRIX_ROW2 0x038
#define WB_DST_MATRIX_ROW3 0x03C
#define WB_DST_WRITE_CONFIG 0x048
#define WB_ROTATION_DNSCALER 0x050
#define WB_ROTATOR_PIPE_DOWNSCALER 0x054
#define WB_N16_INIT_PHASE_X_C03 0x060
#define WB_N16_INIT_PHASE_X_C12 0x064
#define WB_N16_INIT_PHASE_Y_C03 0x068
#define WB_N16_INIT_PHASE_Y_C12 0x06C
#define WB_OUT_SIZE 0x074
#define WB_ALPHA_X_VALUE 0x078
#define WB_DANGER_LUT 0x084
#define WB_SAFE_LUT 0x088
#define WB_QOS_CTRL 0x090
#define WB_CREQ_LUT_0 0x098
#define WB_CREQ_LUT_1 0x09C
#define WB_UBWC_STATIC_CTRL 0x144
#define WB_MUX 0x150
#define WB_CROP_CTRL 0x154
#define WB_CROP_OFFSET 0x158
#define WB_CSC_BASE 0x260
#define WB_DST_ADDR_SW_STATUS 0x2B0
#define WB_CDP_CNTL 0x2B4
#define WB_OUT_IMAGE_SIZE 0x2C0
#define WB_OUT_XY 0x2C4
/* WB_QOS_CTRL */
#define WB_QOS_CTRL_DANGER_SAFE_EN BIT(0)
static const struct dpu_wb_cfg *_wb_offset(enum dpu_wb wb,
const struct dpu_mdss_cfg *m, void __iomem *addr,
struct dpu_hw_blk_reg_map *b)
{
int i;
for (i = 0; i < m->wb_count; i++) {
if (wb == m->wb[i].id) {
b->blk_addr = addr + m->wb[i].base;
b->log_mask = DPU_DBG_MASK_WB;
return &m->wb[i];
}
}
return ERR_PTR(-EINVAL);
}
static void dpu_hw_wb_setup_outaddress(struct dpu_hw_wb *ctx,
struct dpu_hw_wb_cfg *data)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
DPU_REG_WRITE(c, WB_DST0_ADDR, data->dest.plane_addr[0]);
DPU_REG_WRITE(c, WB_DST1_ADDR, data->dest.plane_addr[1]);
DPU_REG_WRITE(c, WB_DST2_ADDR, data->dest.plane_addr[2]);
DPU_REG_WRITE(c, WB_DST3_ADDR, data->dest.plane_addr[3]);
}
static void dpu_hw_wb_setup_format(struct dpu_hw_wb *ctx,
struct dpu_hw_wb_cfg *data)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
const struct dpu_format *fmt = data->dest.format;
u32 dst_format, pattern, ystride0, ystride1, outsize, chroma_samp;
u32 write_config = 0;
u32 opmode = 0;
u32 dst_addr_sw = 0;
chroma_samp = fmt->chroma_sample;
dst_format = (chroma_samp << 23) |
(fmt->fetch_planes << 19) |
(fmt->bits[C3_ALPHA] << 6) |
(fmt->bits[C2_R_Cr] << 4) |
(fmt->bits[C1_B_Cb] << 2) |
(fmt->bits[C0_G_Y] << 0);
if (fmt->bits[C3_ALPHA] || fmt->alpha_enable) {
dst_format |= BIT(8); /* DSTC3_EN */
if (!fmt->alpha_enable ||
!(ctx->caps->features & BIT(DPU_WB_PIPE_ALPHA)))
dst_format |= BIT(14); /* DST_ALPHA_X */
}
if (DPU_FORMAT_IS_YUV(fmt))
dst_format |= BIT(15);
pattern = (fmt->element[3] << 24) |
(fmt->element[2] << 16) |
(fmt->element[1] << 8) |
(fmt->element[0] << 0);
dst_format |= (fmt->unpack_align_msb << 18) |
(fmt->unpack_tight << 17) |
((fmt->unpack_count - 1) << 12) |
((fmt->bpp - 1) << 9);
ystride0 = data->dest.plane_pitch[0] |
(data->dest.plane_pitch[1] << 16);
ystride1 = data->dest.plane_pitch[2] |
(data->dest.plane_pitch[3] << 16);
if (drm_rect_height(&data->roi) && drm_rect_width(&data->roi))
outsize = (drm_rect_height(&data->roi) << 16) | drm_rect_width(&data->roi);
else
outsize = (data->dest.height << 16) | data->dest.width;
DPU_REG_WRITE(c, WB_ALPHA_X_VALUE, 0xFF);
DPU_REG_WRITE(c, WB_DST_FORMAT, dst_format);
DPU_REG_WRITE(c, WB_DST_OP_MODE, opmode);
DPU_REG_WRITE(c, WB_DST_PACK_PATTERN, pattern);
DPU_REG_WRITE(c, WB_DST_YSTRIDE0, ystride0);
DPU_REG_WRITE(c, WB_DST_YSTRIDE1, ystride1);
DPU_REG_WRITE(c, WB_OUT_SIZE, outsize);
DPU_REG_WRITE(c, WB_DST_WRITE_CONFIG, write_config);
DPU_REG_WRITE(c, WB_DST_ADDR_SW_STATUS, dst_addr_sw);
}
static void dpu_hw_wb_roi(struct dpu_hw_wb *ctx, struct dpu_hw_wb_cfg *wb)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
u32 image_size, out_size, out_xy;
image_size = (wb->dest.height << 16) | wb->dest.width;
out_xy = 0;
out_size = (drm_rect_height(&wb->roi) << 16) | drm_rect_width(&wb->roi);
DPU_REG_WRITE(c, WB_OUT_IMAGE_SIZE, image_size);
DPU_REG_WRITE(c, WB_OUT_XY, out_xy);
DPU_REG_WRITE(c, WB_OUT_SIZE, out_size);
}
static void dpu_hw_wb_setup_qos_lut(struct dpu_hw_wb *ctx,
struct dpu_hw_wb_qos_cfg *cfg)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
u32 qos_ctrl = 0;
if (!ctx || !cfg)
return;
DPU_REG_WRITE(c, WB_DANGER_LUT, cfg->danger_lut);
DPU_REG_WRITE(c, WB_SAFE_LUT, cfg->safe_lut);
/*
* for chipsets not using DPU_WB_QOS_8LVL but still using DPU
* driver such as msm8998, the reset value of WB_CREQ_LUT is
* sufficient for writeback to work. SW doesn't need to explicitly
* program a value.
*/
if (ctx->caps && test_bit(DPU_WB_QOS_8LVL, &ctx->caps->features)) {
DPU_REG_WRITE(c, WB_CREQ_LUT_0, cfg->creq_lut);
DPU_REG_WRITE(c, WB_CREQ_LUT_1, cfg->creq_lut >> 32);
}
if (cfg->danger_safe_en)
qos_ctrl |= WB_QOS_CTRL_DANGER_SAFE_EN;
DPU_REG_WRITE(c, WB_QOS_CTRL, qos_ctrl);
}
static void dpu_hw_wb_setup_cdp(struct dpu_hw_wb *ctx,
struct dpu_hw_cdp_cfg *cfg)
{
struct dpu_hw_blk_reg_map *c;
u32 cdp_cntl = 0;
if (!ctx || !cfg)
return;
c = &ctx->hw;
if (cfg->enable)
cdp_cntl |= BIT(0);
if (cfg->ubwc_meta_enable)
cdp_cntl |= BIT(1);
if (cfg->preload_ahead == DPU_WB_CDP_PRELOAD_AHEAD_64)
cdp_cntl |= BIT(3);
DPU_REG_WRITE(c, WB_CDP_CNTL, cdp_cntl);
}
static void dpu_hw_wb_bind_pingpong_blk(
struct dpu_hw_wb *ctx,
bool enable, const enum dpu_pingpong pp)
{
struct dpu_hw_blk_reg_map *c;
int mux_cfg;
if (!ctx)
return;
c = &ctx->hw;
mux_cfg = DPU_REG_READ(c, WB_MUX);
mux_cfg &= ~0xf;
if (enable)
mux_cfg |= (pp - PINGPONG_0) & 0x7;
else
mux_cfg |= 0xf;
DPU_REG_WRITE(c, WB_MUX, mux_cfg);
}
static void _setup_wb_ops(struct dpu_hw_wb_ops *ops,
unsigned long features)
{
ops->setup_outaddress = dpu_hw_wb_setup_outaddress;
ops->setup_outformat = dpu_hw_wb_setup_format;
if (test_bit(DPU_WB_XY_ROI_OFFSET, &features))
ops->setup_roi = dpu_hw_wb_roi;
if (test_bit(DPU_WB_QOS, &features))
ops->setup_qos_lut = dpu_hw_wb_setup_qos_lut;
if (test_bit(DPU_WB_CDP, &features))
ops->setup_cdp = dpu_hw_wb_setup_cdp;
if (test_bit(DPU_WB_INPUT_CTRL, &features))
ops->bind_pingpong_blk = dpu_hw_wb_bind_pingpong_blk;
}
struct dpu_hw_wb *dpu_hw_wb_init(enum dpu_wb idx,
void __iomem *addr, const struct dpu_mdss_cfg *m)
{
struct dpu_hw_wb *c;
const struct dpu_wb_cfg *cfg;
if (!addr || !m)
return ERR_PTR(-EINVAL);
c = kzalloc(sizeof(*c), GFP_KERNEL);
if (!c)
return ERR_PTR(-ENOMEM);
cfg = _wb_offset(idx, m, addr, &c->hw);
if (IS_ERR(cfg)) {
WARN(1, "Unable to find wb idx=%d\n", idx);
kfree(c);
return ERR_PTR(-EINVAL);
}
/* Assign ops */
c->mdp = &m->mdp[0];
c->idx = idx;
c->caps = cfg;
_setup_wb_ops(&c->ops, c->caps->features);
return c;
}
void dpu_hw_wb_destroy(struct dpu_hw_wb *hw_wb)
{
kfree(hw_wb);
}
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