1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2015-2018, The Linux Foundation. All rights reserved.
3  */
4 
5 #include "dpu_hwio.h"
6 #include "dpu_hw_catalog.h"
7 #include "dpu_hw_lm.h"
8 #include "dpu_hw_dspp.h"
9 #include "dpu_kms.h"
10 
11 
12 /* DSPP_PCC */
13 #define PCC_EN BIT(0)
14 #define PCC_DIS 0
15 #define PCC_RED_R_OFF 0x10
16 #define PCC_RED_G_OFF 0x1C
17 #define PCC_RED_B_OFF 0x28
18 #define PCC_GREEN_R_OFF 0x14
19 #define PCC_GREEN_G_OFF 0x20
20 #define PCC_GREEN_B_OFF 0x2C
21 #define PCC_BLUE_R_OFF 0x18
22 #define PCC_BLUE_G_OFF 0x24
23 #define PCC_BLUE_B_OFF 0x30
24 
25 static void dpu_setup_dspp_pcc(struct dpu_hw_dspp *ctx,
26 		struct dpu_hw_pcc_cfg *cfg)
27 {
28 
29 	u32 base;
30 
31 	if (!ctx) {
32 		DRM_ERROR("invalid ctx %pK\n", ctx);
33 		return;
34 	}
35 
36 	base = ctx->cap->sblk->pcc.base;
37 
38 	if (!base) {
39 		DRM_ERROR("invalid ctx %pK pcc base 0x%x\n", ctx, base);
40 		return;
41 	}
42 
43 	if (!cfg) {
44 		DRM_DEBUG_DRIVER("disable pcc feature\n");
45 		DPU_REG_WRITE(&ctx->hw, base, PCC_DIS);
46 		return;
47 	}
48 
49 	DPU_REG_WRITE(&ctx->hw, base + PCC_RED_R_OFF, cfg->r.r);
50 	DPU_REG_WRITE(&ctx->hw, base + PCC_RED_G_OFF, cfg->r.g);
51 	DPU_REG_WRITE(&ctx->hw, base + PCC_RED_B_OFF, cfg->r.b);
52 
53 	DPU_REG_WRITE(&ctx->hw, base + PCC_GREEN_R_OFF, cfg->g.r);
54 	DPU_REG_WRITE(&ctx->hw, base + PCC_GREEN_G_OFF, cfg->g.g);
55 	DPU_REG_WRITE(&ctx->hw, base + PCC_GREEN_B_OFF, cfg->g.b);
56 
57 	DPU_REG_WRITE(&ctx->hw, base + PCC_BLUE_R_OFF, cfg->b.r);
58 	DPU_REG_WRITE(&ctx->hw, base + PCC_BLUE_G_OFF, cfg->b.g);
59 	DPU_REG_WRITE(&ctx->hw, base + PCC_BLUE_B_OFF, cfg->b.b);
60 
61 	DPU_REG_WRITE(&ctx->hw, base, PCC_EN);
62 }
63 
64 static void _setup_dspp_ops(struct dpu_hw_dspp *c,
65 		unsigned long features)
66 {
67 	if (test_bit(DPU_DSPP_PCC, &features))
68 		c->ops.setup_pcc = dpu_setup_dspp_pcc;
69 }
70 
71 static const struct dpu_dspp_cfg *_dspp_offset(enum dpu_dspp dspp,
72 		const struct dpu_mdss_cfg *m,
73 		void __iomem *addr,
74 		struct dpu_hw_blk_reg_map *b)
75 {
76 	int i;
77 
78 	if (!m || !addr || !b)
79 		return ERR_PTR(-EINVAL);
80 
81 	for (i = 0; i < m->dspp_count; i++) {
82 		if (dspp == m->dspp[i].id) {
83 			b->blk_addr = addr + m->dspp[i].base;
84 			b->log_mask = DPU_DBG_MASK_DSPP;
85 			return &m->dspp[i];
86 		}
87 	}
88 
89 	return ERR_PTR(-EINVAL);
90 }
91 
92 struct dpu_hw_dspp *dpu_hw_dspp_init(enum dpu_dspp idx,
93 			void __iomem *addr,
94 			const struct dpu_mdss_cfg *m)
95 {
96 	struct dpu_hw_dspp *c;
97 	const struct dpu_dspp_cfg *cfg;
98 
99 	if (!addr || !m)
100 		return ERR_PTR(-EINVAL);
101 
102 	c = kzalloc(sizeof(*c), GFP_KERNEL);
103 	if (!c)
104 		return ERR_PTR(-ENOMEM);
105 
106 	cfg = _dspp_offset(idx, m, addr, &c->hw);
107 	if (IS_ERR_OR_NULL(cfg)) {
108 		kfree(c);
109 		return ERR_PTR(-EINVAL);
110 	}
111 
112 	/* Assign ops */
113 	c->idx = idx;
114 	c->cap = cfg;
115 	_setup_dspp_ops(c, c->cap->features);
116 
117 	return c;
118 }
119 
120 void dpu_hw_dspp_destroy(struct dpu_hw_dspp *dspp)
121 {
122 	kfree(dspp);
123 }
124 
125 
126