1 // SPDX-License-Identifier: GPL-2.0-only 2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved. 3 */ 4 5 #include "dpu_kms.h" 6 #include "dpu_hw_catalog.h" 7 #include "dpu_hwio.h" 8 #include "dpu_hw_lm.h" 9 #include "dpu_hw_mdss.h" 10 11 #define LM_OP_MODE 0x00 12 #define LM_OUT_SIZE 0x04 13 #define LM_BORDER_COLOR_0 0x08 14 #define LM_BORDER_COLOR_1 0x010 15 16 /* These register are offset to mixer base + stage base */ 17 #define LM_BLEND0_OP 0x00 18 #define LM_BLEND0_CONST_ALPHA 0x04 19 #define LM_FG_COLOR_FILL_COLOR_0 0x08 20 #define LM_FG_COLOR_FILL_COLOR_1 0x0C 21 #define LM_FG_COLOR_FILL_SIZE 0x10 22 #define LM_FG_COLOR_FILL_XY 0x14 23 24 #define LM_BLEND0_FG_ALPHA 0x04 25 #define LM_BLEND0_BG_ALPHA 0x08 26 27 static const struct dpu_lm_cfg *_lm_offset(enum dpu_lm mixer, 28 const struct dpu_mdss_cfg *m, 29 void __iomem *addr, 30 struct dpu_hw_blk_reg_map *b) 31 { 32 int i; 33 34 for (i = 0; i < m->mixer_count; i++) { 35 if (mixer == m->mixer[i].id) { 36 b->base_off = addr; 37 b->blk_off = m->mixer[i].base; 38 b->length = m->mixer[i].len; 39 b->hwversion = m->hwversion; 40 b->log_mask = DPU_DBG_MASK_LM; 41 return &m->mixer[i]; 42 } 43 } 44 45 return ERR_PTR(-ENOMEM); 46 } 47 48 /** 49 * _stage_offset(): returns the relative offset of the blend registers 50 * for the stage to be setup 51 * @ctx: mixer ctx contains the mixer to be programmed 52 * @stage: stage index to setup 53 */ 54 static inline int _stage_offset(struct dpu_hw_mixer *ctx, enum dpu_stage stage) 55 { 56 const struct dpu_lm_sub_blks *sblk = ctx->cap->sblk; 57 if (stage != DPU_STAGE_BASE && stage <= sblk->maxblendstages) 58 return sblk->blendstage_base[stage - DPU_STAGE_0]; 59 60 return -EINVAL; 61 } 62 63 static void dpu_hw_lm_setup_out(struct dpu_hw_mixer *ctx, 64 struct dpu_hw_mixer_cfg *mixer) 65 { 66 struct dpu_hw_blk_reg_map *c = &ctx->hw; 67 u32 outsize; 68 u32 op_mode; 69 70 op_mode = DPU_REG_READ(c, LM_OP_MODE); 71 72 outsize = mixer->out_height << 16 | mixer->out_width; 73 DPU_REG_WRITE(c, LM_OUT_SIZE, outsize); 74 75 /* SPLIT_LEFT_RIGHT */ 76 if (mixer->right_mixer) 77 op_mode |= BIT(31); 78 else 79 op_mode &= ~BIT(31); 80 DPU_REG_WRITE(c, LM_OP_MODE, op_mode); 81 } 82 83 static void dpu_hw_lm_setup_border_color(struct dpu_hw_mixer *ctx, 84 struct dpu_mdss_color *color, 85 u8 border_en) 86 { 87 struct dpu_hw_blk_reg_map *c = &ctx->hw; 88 89 if (border_en) { 90 DPU_REG_WRITE(c, LM_BORDER_COLOR_0, 91 (color->color_0 & 0xFFF) | 92 ((color->color_1 & 0xFFF) << 0x10)); 93 DPU_REG_WRITE(c, LM_BORDER_COLOR_1, 94 (color->color_2 & 0xFFF) | 95 ((color->color_3 & 0xFFF) << 0x10)); 96 } 97 } 98 99 static void dpu_hw_lm_setup_blend_config_sdm845(struct dpu_hw_mixer *ctx, 100 u32 stage, u32 fg_alpha, u32 bg_alpha, u32 blend_op) 101 { 102 struct dpu_hw_blk_reg_map *c = &ctx->hw; 103 int stage_off; 104 u32 const_alpha; 105 106 if (stage == DPU_STAGE_BASE) 107 return; 108 109 stage_off = _stage_offset(ctx, stage); 110 if (WARN_ON(stage_off < 0)) 111 return; 112 113 const_alpha = (bg_alpha & 0xFF) | ((fg_alpha & 0xFF) << 16); 114 DPU_REG_WRITE(c, LM_BLEND0_CONST_ALPHA + stage_off, const_alpha); 115 DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, blend_op); 116 } 117 118 static void dpu_hw_lm_setup_blend_config(struct dpu_hw_mixer *ctx, 119 u32 stage, u32 fg_alpha, u32 bg_alpha, u32 blend_op) 120 { 121 struct dpu_hw_blk_reg_map *c = &ctx->hw; 122 int stage_off; 123 124 if (stage == DPU_STAGE_BASE) 125 return; 126 127 stage_off = _stage_offset(ctx, stage); 128 if (WARN_ON(stage_off < 0)) 129 return; 130 131 DPU_REG_WRITE(c, LM_BLEND0_FG_ALPHA + stage_off, fg_alpha); 132 DPU_REG_WRITE(c, LM_BLEND0_BG_ALPHA + stage_off, bg_alpha); 133 DPU_REG_WRITE(c, LM_BLEND0_OP + stage_off, blend_op); 134 } 135 136 static void dpu_hw_lm_setup_color3(struct dpu_hw_mixer *ctx, 137 uint32_t mixer_op_mode) 138 { 139 struct dpu_hw_blk_reg_map *c = &ctx->hw; 140 int op_mode; 141 142 /* read the existing op_mode configuration */ 143 op_mode = DPU_REG_READ(c, LM_OP_MODE); 144 145 op_mode = (op_mode & (BIT(31) | BIT(30))) | mixer_op_mode; 146 147 DPU_REG_WRITE(c, LM_OP_MODE, op_mode); 148 } 149 150 static void _setup_mixer_ops(const struct dpu_mdss_cfg *m, 151 struct dpu_hw_lm_ops *ops, 152 unsigned long features) 153 { 154 ops->setup_mixer_out = dpu_hw_lm_setup_out; 155 if (m->hwversion >= DPU_HW_VER_400) 156 ops->setup_blend_config = dpu_hw_lm_setup_blend_config_sdm845; 157 else 158 ops->setup_blend_config = dpu_hw_lm_setup_blend_config; 159 ops->setup_alpha_out = dpu_hw_lm_setup_color3; 160 ops->setup_border_color = dpu_hw_lm_setup_border_color; 161 } 162 163 static struct dpu_hw_blk_ops dpu_hw_ops; 164 165 struct dpu_hw_mixer *dpu_hw_lm_init(enum dpu_lm idx, 166 void __iomem *addr, 167 const struct dpu_mdss_cfg *m) 168 { 169 struct dpu_hw_mixer *c; 170 const struct dpu_lm_cfg *cfg; 171 172 c = kzalloc(sizeof(*c), GFP_KERNEL); 173 if (!c) 174 return ERR_PTR(-ENOMEM); 175 176 cfg = _lm_offset(idx, m, addr, &c->hw); 177 if (IS_ERR_OR_NULL(cfg)) { 178 kfree(c); 179 return ERR_PTR(-EINVAL); 180 } 181 182 /* Assign ops */ 183 c->idx = idx; 184 c->cap = cfg; 185 _setup_mixer_ops(m, &c->ops, c->cap->features); 186 187 dpu_hw_blk_init(&c->base, DPU_HW_BLK_LM, idx, &dpu_hw_ops); 188 189 return c; 190 } 191 192 void dpu_hw_lm_destroy(struct dpu_hw_mixer *lm) 193 { 194 if (lm) 195 dpu_hw_blk_destroy(&lm->base); 196 kfree(lm); 197 } 198