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
_lm_offset(enum dpu_lm mixer,const struct dpu_mdss_cfg * m,void __iomem * addr,struct dpu_hw_blk_reg_map * b)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 */
_stage_offset(struct dpu_hw_mixer * ctx,enum dpu_stage stage)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
dpu_hw_lm_setup_out(struct dpu_hw_mixer * ctx,struct dpu_hw_mixer_cfg * mixer)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
dpu_hw_lm_setup_border_color(struct dpu_hw_mixer * ctx,struct dpu_mdss_color * color,u8 border_en)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
dpu_hw_lm_setup_blend_config_sdm845(struct dpu_hw_mixer * ctx,u32 stage,u32 fg_alpha,u32 bg_alpha,u32 blend_op)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
dpu_hw_lm_setup_blend_config(struct dpu_hw_mixer * ctx,u32 stage,u32 fg_alpha,u32 bg_alpha,u32 blend_op)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
dpu_hw_lm_setup_color3(struct dpu_hw_mixer * ctx,uint32_t mixer_op_mode)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
_setup_mixer_ops(const struct dpu_mdss_cfg * m,struct dpu_hw_lm_ops * ops,unsigned long features)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
dpu_hw_lm_init(enum dpu_lm idx,void __iomem * addr,const struct dpu_mdss_cfg * m)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
dpu_hw_lm_destroy(struct dpu_hw_mixer * lm)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