// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright ( c ) 2022 - 2023 Qualcomm Innovation Center , Inc . All rights reserved .
* Copyright ( c ) 2015 - 2021 , The Linux Foundation . All rights reserved .
*/
#include <drm/drm_managed.h>
#include "dpu_kms.h"
#include "dpu_hw_catalog.h"
#include "dpu_hwio.h"
#include "dpu_hw_lm.h"
#include "dpu_hw_mdss.h"
#define LM_OP_MODE 0 x00
#define LM_OUT_SIZE 0 x04
#define LM_BORDER_COLOR_0 0 x08
#define LM_BORDER_COLOR_1 0 x010
/* These register are offset to mixer base + stage base */
#define LM_BLEND0_OP 0 x00
/* <v12 DPU with offset to mixer base + stage base */
#define LM_BLEND0_CONST_ALPHA 0 x04
#define LM_FG_COLOR_FILL_COLOR_0 0 x08
#define LM_FG_COLOR_FILL_COLOR_1 0 x0C
#define LM_FG_COLOR_FILL_SIZE 0 x10
#define LM_FG_COLOR_FILL_XY 0 x14
/* >= v12 DPU */
#define LM_BG_SRC_SEL_V12 0 x14
#define LM_BG_SRC_SEL_V12_RESET_VALUE 0 x0000c0c0
#define LM_BORDER_COLOR_0_V12 0 x1c
#define LM_BORDER_COLOR_1_V12 0 x20
/* >= v12 DPU with offset to mixer base + stage base */
#define LM_BLEND0_FG_SRC_SEL_V12 0 x04
#define LM_BLEND0_CONST_ALPHA_V12 0 x08
#define LM_FG_COLOR_FILL_COLOR_0_V12 0 x0c
#define LM_FG_COLOR_FILL_COLOR_1_V12 0 x10
#define LM_FG_COLOR_FILL_SIZE_V12 0 x14
#define LM_FG_COLOR_FILL_XY_V12 0 x18
#define LM_BLEND0_FG_ALPHA 0 x04
#define LM_BLEND0_BG_ALPHA 0 x08
#define LM_MISR_CTRL 0 x310
#define LM_MISR_SIGNATURE 0 x314
/**
* _ stage_offset ( ) : returns the relative offset of the blend registers
* for the stage to be setup
* @ ctx : mixer ctx contains the mixer to be programmed
* @ stage : stage index to setup
*/
static inline int _stage_offset(struct dpu_hw_mixer *ctx, enum dpu_stage stage)
{
const struct dpu_lm_sub_blks *sblk = ctx->cap->sblk;
if (stage != DPU_STAGE_BASE && stage <= sblk->maxblendstages)
return sblk->blendstage_base[stage - DPU_STAGE_0];
return -EINVAL;
}
static void dpu_hw_lm_setup_out(struct dpu_hw_mixer *ctx,
struct dpu_hw_mixer_cfg *mixer)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
u32 outsize;
u32 op_mode;
op_mode = DPU_REG_READ(c, LM_OP_MODE);
outsize = mixer->out_height << 16 | mixer->out_width;
DPU_REG_WRITE(c, LM_OUT_SIZE, outsize);
/* SPLIT_LEFT_RIGHT */
if (mixer->right_mixer)
op_mode |= BIT(31 );
else
op_mode &= ~BIT(31 );
DPU_REG_WRITE(c, LM_OP_MODE, op_mode);
}
static void dpu_hw_lm_setup_border_color(struct dpu_hw_mixer *ctx,
struct dpu_mdss_color *color,
u8 border_en)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
if (border_en) {
DPU_REG_WRITE(c, LM_BORDER_COLOR_0,
(color->color_0 & 0 xFFF) |
((color->color_1 & 0 xFFF) << 0 x10));
DPU_REG_WRITE(c, LM_BORDER_COLOR_1,
(color->color_2 & 0 xFFF) |
((color->color_3 & 0 xFFF) << 0 x10));
}
}
static void dpu_hw_lm_setup_border_color_v12(struct dpu_hw_mixer *ctx,
struct dpu_mdss_color *color,
u8 border_en)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
if (border_en) {
DPU_REG_WRITE(c, LM_BORDER_COLOR_0_V12,
(color->color_0 & 0 x3ff) |
((color->color_1 & 0 x3ff) << 16 ));
DPU_REG_WRITE(c, LM_BORDER_COLOR_1_V12,
(color->color_2 & 0 x3ff) |
((color->color_3 & 0 x3ff) << 16 ));
}
}
static void dpu_hw_lm_setup_misr(struct dpu_hw_mixer *ctx)
{
dpu_hw_setup_misr(&ctx->hw, LM_MISR_CTRL, 0 x0);
}
static int dpu_hw_lm_collect_misr(struct dpu_hw_mixer *ctx, u32 *misr_value)
{
return dpu_hw_collect_misr(&ctx->hw, LM_MISR_CTRL, LM_MISR_SIGNATURE, misr_value);
}
static void dpu_hw_lm_setup_blend_config_combined_alpha(struct dpu_hw_mixer *ctx,
u32 stage, u32 fg_alpha, u32 bg_alpha, u32 blend_op)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int stage_off;
u32 const_alpha;
if (stage == DPU_STAGE_BASE)
return ;
stage_off = _stage_offset(ctx, stage);
if (WARN_ON(stage_off < 0 ))
return ;
const_alpha = (bg_alpha & 0 xFF) | ((fg_alpha & 0 xFF) << 16 );
DPU_REG_WRITE(c, LM_BLEND0_CONST_ALPHA + stage_off, const_alpha);
DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, blend_op);
}
static void
dpu_hw_lm_setup_blend_config_combined_alpha_v12(struct dpu_hw_mixer *ctx,
u32 stage, u32 fg_alpha,
u32 bg_alpha, u32 blend_op)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int stage_off;
u32 const_alpha;
if (stage == DPU_STAGE_BASE)
return ;
stage_off = _stage_offset(ctx, stage);
if (WARN_ON(stage_off < 0 ))
return ;
const_alpha = (bg_alpha & 0 x3ff) | ((fg_alpha & 0 x3ff) << 16 );
DPU_REG_WRITE(c, LM_BLEND0_CONST_ALPHA_V12 + stage_off, const_alpha);
DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, blend_op);
}
static void dpu_hw_lm_setup_blend_config(struct dpu_hw_mixer *ctx,
u32 stage, u32 fg_alpha, u32 bg_alpha, u32 blend_op)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int stage_off;
if (stage == DPU_STAGE_BASE)
return ;
stage_off = _stage_offset(ctx, stage);
if (WARN_ON(stage_off < 0 ))
return ;
DPU_REG_WRITE(c, LM_BLEND0_FG_ALPHA + stage_off, fg_alpha);
DPU_REG_WRITE(c, LM_BLEND0_BG_ALPHA + stage_off, bg_alpha);
DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, blend_op);
}
static void dpu_hw_lm_setup_color3(struct dpu_hw_mixer *ctx,
uint32_t mixer_op_mode)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int op_mode;
/* read the existing op_mode configuration */
op_mode = DPU_REG_READ(c, LM_OP_MODE);
op_mode = (op_mode & (BIT(31 ) | BIT(30 ))) | mixer_op_mode;
DPU_REG_WRITE(c, LM_OP_MODE, op_mode);
}
static void dpu_hw_lm_setup_color3_v12(struct dpu_hw_mixer *ctx,
uint32_t mixer_op_mode)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int op_mode, stages, stage_off, i;
stages = ctx->cap->sblk->maxblendstages;
if (stages <= 0 )
return ;
for (i = DPU_STAGE_0; i <= stages; i++) {
stage_off = _stage_offset(ctx, i);
if (WARN_ON(stage_off < 0 ))
return ;
/* set color_out3 bit in blend0_op when enabled in mixer_op_mode */
op_mode = DPU_REG_READ(c, LM_BLEND0_OP + stage_off);
if (mixer_op_mode & BIT(i))
op_mode |= BIT(30 );
else
op_mode &= ~BIT(30 );
DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, op_mode);
}
}
static int _set_staged_sspp(u32 stage, struct dpu_hw_stage_cfg *stage_cfg,
int pipes_per_stage, u32 *value)
{
int i;
u32 pipe_type = 0 , pipe_id = 0 , rec_id = 0 ;
u32 src_sel[PIPES_PER_STAGE];
*value = LM_BG_SRC_SEL_V12_RESET_VALUE;
if (!stage_cfg || !pipes_per_stage)
return 0 ;
for (i = 0 ; i < pipes_per_stage; i++) {
enum dpu_sspp pipe = stage_cfg->stage[stage][i];
enum dpu_sspp_multirect_index rect_index = stage_cfg->multirect_index[stage][i];
src_sel[i] = LM_BG_SRC_SEL_V12_RESET_VALUE;
if (!pipe)
continue ;
/* translate pipe data to SWI pipe_type, pipe_id */
if (pipe >= SSPP_DMA0 && pipe <= SSPP_DMA5) {
pipe_type = 0 ;
pipe_id = pipe - SSPP_DMA0;
} else if (pipe >= SSPP_VIG0 && pipe <= SSPP_VIG3) {
pipe_type = 1 ;
pipe_id = pipe - SSPP_VIG0;
} else {
DPU_ERROR("invalid rec-%d pipe:%d\n" , i, pipe);
return -EINVAL;
}
/* translate rec data to SWI rec_id */
if (rect_index == DPU_SSPP_RECT_SOLO || rect_index == DPU_SSPP_RECT_0) {
rec_id = 0 ;
} else if (rect_index == DPU_SSPP_RECT_1) {
rec_id = 1 ;
} else {
DPU_ERROR("invalid rec-%d rect_index:%d\n" , i, rect_index);
rec_id = 0 ;
}
/* calculate SWI value for rec-0 and rec-1 and store it temporary buffer */
src_sel[i] = (((pipe_type & 0 x3) << 6 ) | ((rec_id & 0 x3) << 4 ) | (pipe_id & 0 xf));
}
/* calculate final SWI register value for rec-0 and rec-1 */
*value = 0 ;
for (i = 0 ; i < pipes_per_stage; i++)
*value |= src_sel[i] << (i * 8 );
return 0 ;
}
static int dpu_hw_lm_setup_blendstage(struct dpu_hw_mixer *ctx, enum dpu_lm lm,
struct dpu_hw_stage_cfg *stage_cfg)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int i, ret, stages, stage_off, pipes_per_stage;
u32 value;
stages = ctx->cap->sblk->maxblendstages;
if (stages <= 0 )
return -EINVAL;
if (test_bit(DPU_MIXER_SOURCESPLIT, &ctx->cap->features))
pipes_per_stage = PIPES_PER_STAGE;
else
pipes_per_stage = 1 ;
/*
* When stage configuration is empty , we can enable the
* border color by setting the corresponding LAYER_ACTIVE bit
* and un - staging all the pipes from the layer mixer .
*/
if (!stage_cfg)
DPU_REG_WRITE(c, LM_BG_SRC_SEL_V12, LM_BG_SRC_SEL_V12_RESET_VALUE);
for (i = DPU_STAGE_0; i <= stages; i++) {
stage_off = _stage_offset(ctx, i);
if (stage_off < 0 )
return stage_off;
ret = _set_staged_sspp(i, stage_cfg, pipes_per_stage, &value);
if (ret)
return ret;
DPU_REG_WRITE(c, LM_BLEND0_FG_SRC_SEL_V12 + stage_off, value);
}
return 0 ;
}
static int dpu_hw_lm_clear_all_blendstages(struct dpu_hw_mixer *ctx)
{
struct dpu_hw_blk_reg_map *c = &ctx->hw;
int i, stages, stage_off;
stages = ctx->cap->sblk->maxblendstages;
if (stages <= 0 )
return -EINVAL;
DPU_REG_WRITE(c, LM_BG_SRC_SEL_V12, LM_BG_SRC_SEL_V12_RESET_VALUE);
for (i = DPU_STAGE_0; i <= stages; i++) {
stage_off = _stage_offset(ctx, i);
if (stage_off < 0 )
return stage_off;
DPU_REG_WRITE(c, LM_BLEND0_FG_SRC_SEL_V12 + stage_off,
LM_BG_SRC_SEL_V12_RESET_VALUE);
}
return 0 ;
}
/**
* dpu_hw_lm_init ( ) - Initializes the mixer hw driver object .
* should be called once before accessing every mixer .
* @ dev : Corresponding device for devres management
* @ cfg : mixer catalog entry for which driver object is required
* @ addr : mapped register io address of MDP
* @ mdss_ver : DPU core ' s major and minor versions
*/
struct dpu_hw_mixer *dpu_hw_lm_init(struct drm_device *dev,
const struct dpu_lm_cfg *cfg,
void __iomem *addr,
const struct dpu_mdss_version *mdss_ver)
{
struct dpu_hw_mixer *c;
if (cfg->pingpong == PINGPONG_NONE) {
DPU_DEBUG("skip mixer %d without pingpong\n" , cfg->id);
return NULL;
}
c = drmm_kzalloc(dev, sizeof (*c), GFP_KERNEL);
if (!c)
return ERR_PTR(-ENOMEM);
c->hw.blk_addr = addr + cfg->base;
c->hw.log_mask = DPU_DBG_MASK_LM;
/* Assign ops */
c->idx = cfg->id;
c->cap = cfg;
c->ops.setup_mixer_out = dpu_hw_lm_setup_out;
if (mdss_ver->core_major_ver >= 12 )
c->ops.setup_blend_config = dpu_hw_lm_setup_blend_config_combined_alpha_v12;
else if (mdss_ver->core_major_ver >= 4 )
c->ops.setup_blend_config = dpu_hw_lm_setup_blend_config_combined_alpha;
else
c->ops.setup_blend_config = dpu_hw_lm_setup_blend_config;
if (mdss_ver->core_major_ver < 12 ) {
c->ops.setup_alpha_out = dpu_hw_lm_setup_color3;
c->ops.setup_border_color = dpu_hw_lm_setup_border_color;
} else {
c->ops.setup_alpha_out = dpu_hw_lm_setup_color3_v12;
c->ops.setup_blendstage = dpu_hw_lm_setup_blendstage;
c->ops.clear_all_blendstages = dpu_hw_lm_clear_all_blendstages;
c->ops.setup_border_color = dpu_hw_lm_setup_border_color_v12;
}
c->ops.setup_misr = dpu_hw_lm_setup_misr;
c->ops.collect_misr = dpu_hw_lm_collect_misr;
return c;
}
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