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7#include <linux/io.h>
8#include <linux/kernel.h>
9#include <linux/platform_device.h>
10
11#include "ocelot.h"
12
13u32 __ocelot_read_ix(struct ocelot *ocelot, u32 reg, u32 offset)
14{
15 u16 target = reg >> TARGET_OFFSET;
16 u32 val;
17
18 WARN_ON(!target);
19
20 regmap_read(ocelot->targets[target],
21 ocelot->map[target][reg & REG_MASK] + offset, &val);
22 return val;
23}
24EXPORT_SYMBOL_GPL(__ocelot_read_ix);
25
26void __ocelot_write_ix(struct ocelot *ocelot, u32 val, u32 reg, u32 offset)
27{
28 u16 target = reg >> TARGET_OFFSET;
29
30 WARN_ON(!target);
31
32 regmap_write(ocelot->targets[target],
33 ocelot->map[target][reg & REG_MASK] + offset, val);
34}
35EXPORT_SYMBOL_GPL(__ocelot_write_ix);
36
37void __ocelot_rmw_ix(struct ocelot *ocelot, u32 val, u32 mask, u32 reg,
38 u32 offset)
39{
40 u16 target = reg >> TARGET_OFFSET;
41
42 WARN_ON(!target);
43
44 regmap_update_bits(ocelot->targets[target],
45 ocelot->map[target][reg & REG_MASK] + offset,
46 mask, val);
47}
48EXPORT_SYMBOL_GPL(__ocelot_rmw_ix);
49
50u32 ocelot_port_readl(struct ocelot_port *port, u32 reg)
51{
52 struct ocelot *ocelot = port->ocelot;
53 u16 target = reg >> TARGET_OFFSET;
54 u32 val;
55
56 WARN_ON(!target);
57
58 regmap_read(port->target, ocelot->map[target][reg & REG_MASK], &val);
59 return val;
60}
61EXPORT_SYMBOL_GPL(ocelot_port_readl);
62
63void ocelot_port_writel(struct ocelot_port *port, u32 val, u32 reg)
64{
65 struct ocelot *ocelot = port->ocelot;
66 u16 target = reg >> TARGET_OFFSET;
67
68 WARN_ON(!target);
69
70 regmap_write(port->target, ocelot->map[target][reg & REG_MASK], val);
71}
72EXPORT_SYMBOL_GPL(ocelot_port_writel);
73
74void ocelot_port_rmwl(struct ocelot_port *port, u32 val, u32 mask, u32 reg)
75{
76 u32 cur = ocelot_port_readl(port, reg);
77
78 ocelot_port_writel(port, (cur & (~mask)) | val, reg);
79}
80EXPORT_SYMBOL_GPL(ocelot_port_rmwl);
81
82u32 __ocelot_target_read_ix(struct ocelot *ocelot, enum ocelot_target target,
83 u32 reg, u32 offset)
84{
85 u32 val;
86
87 regmap_read(ocelot->targets[target],
88 ocelot->map[target][reg] + offset, &val);
89 return val;
90}
91
92void __ocelot_target_write_ix(struct ocelot *ocelot, enum ocelot_target target,
93 u32 val, u32 reg, u32 offset)
94{
95 regmap_write(ocelot->targets[target],
96 ocelot->map[target][reg] + offset, val);
97}
98
99int ocelot_regfields_init(struct ocelot *ocelot,
100 const struct reg_field *const regfields)
101{
102 unsigned int i;
103 u16 target;
104
105 for (i = 0; i < REGFIELD_MAX; i++) {
106 struct reg_field regfield = {};
107 u32 reg = regfields[i].reg;
108
109 if (!reg)
110 continue;
111
112 target = regfields[i].reg >> TARGET_OFFSET;
113
114 regfield.reg = ocelot->map[target][reg & REG_MASK];
115 regfield.lsb = regfields[i].lsb;
116 regfield.msb = regfields[i].msb;
117 regfield.id_size = regfields[i].id_size;
118 regfield.id_offset = regfields[i].id_offset;
119
120 ocelot->regfields[i] =
121 devm_regmap_field_alloc(ocelot->dev,
122 ocelot->targets[target],
123 regfield);
124
125 if (IS_ERR(ocelot->regfields[i]))
126 return PTR_ERR(ocelot->regfields[i]);
127 }
128
129 return 0;
130}
131EXPORT_SYMBOL_GPL(ocelot_regfields_init);
132
133static struct regmap_config ocelot_regmap_config = {
134 .reg_bits = 32,
135 .val_bits = 32,
136 .reg_stride = 4,
137};
138
139struct regmap *ocelot_regmap_init(struct ocelot *ocelot, struct resource *res)
140{
141 void __iomem *regs;
142
143 regs = devm_ioremap_resource(ocelot->dev, res);
144 if (IS_ERR(regs))
145 return ERR_CAST(regs);
146
147 ocelot_regmap_config.name = res->name;
148
149 return devm_regmap_init_mmio(ocelot->dev, regs, &ocelot_regmap_config);
150}
151EXPORT_SYMBOL_GPL(ocelot_regmap_init);
152
