1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 * Microsemi Ocelot Switch driver
5 * Copyright (c) 2017 Microsemi Corporation
8 #include <linux/kernel.h>
9 #include <linux/platform_device.h>
13 u32 __ocelot_read_ix(struct ocelot *ocelot, u32 reg, u32 offset)
15 u16 target = reg >> TARGET_OFFSET;
20 regmap_read(ocelot->targets[target],
21 ocelot->map[target][reg & REG_MASK] + offset, &val);
24 EXPORT_SYMBOL(__ocelot_read_ix);
26 void __ocelot_write_ix(struct ocelot *ocelot, u32 val, u32 reg, u32 offset)
28 u16 target = reg >> TARGET_OFFSET;
32 regmap_write(ocelot->targets[target],
33 ocelot->map[target][reg & REG_MASK] + offset, val);
35 EXPORT_SYMBOL(__ocelot_write_ix);
37 void __ocelot_rmw_ix(struct ocelot *ocelot, u32 val, u32 mask, u32 reg,
40 u16 target = reg >> TARGET_OFFSET;
44 regmap_update_bits(ocelot->targets[target],
45 ocelot->map[target][reg & REG_MASK] + offset,
48 EXPORT_SYMBOL(__ocelot_rmw_ix);
50 u32 ocelot_port_readl(struct ocelot_port *port, u32 reg)
52 struct ocelot *ocelot = port->ocelot;
53 u16 target = reg >> TARGET_OFFSET;
58 regmap_read(port->target, ocelot->map[target][reg & REG_MASK], &val);
61 EXPORT_SYMBOL(ocelot_port_readl);
63 void ocelot_port_writel(struct ocelot_port *port, u32 val, u32 reg)
65 struct ocelot *ocelot = port->ocelot;
66 u16 target = reg >> TARGET_OFFSET;
70 regmap_write(port->target, ocelot->map[target][reg & REG_MASK], val);
72 EXPORT_SYMBOL(ocelot_port_writel);
74 void ocelot_port_rmwl(struct ocelot_port *port, u32 val, u32 mask, u32 reg)
76 u32 cur = ocelot_port_readl(port, reg);
78 ocelot_port_writel(port, (cur & (~mask)) | val, reg);
80 EXPORT_SYMBOL(ocelot_port_rmwl);
82 u32 __ocelot_target_read_ix(struct ocelot *ocelot, enum ocelot_target target,
87 regmap_read(ocelot->targets[target],
88 ocelot->map[target][reg] + offset, &val);
92 void __ocelot_target_write_ix(struct ocelot *ocelot, enum ocelot_target target,
93 u32 val, u32 reg, u32 offset)
95 regmap_write(ocelot->targets[target],
96 ocelot->map[target][reg] + offset, val);
99 int ocelot_regfields_init(struct ocelot *ocelot,
100 const struct reg_field *const regfields)
105 for (i = 0; i < REGFIELD_MAX; i++) {
106 struct reg_field regfield = {};
107 u32 reg = regfields[i].reg;
112 target = regfields[i].reg >> TARGET_OFFSET;
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;
120 ocelot->regfields[i] =
121 devm_regmap_field_alloc(ocelot->dev,
122 ocelot->targets[target],
125 if (IS_ERR(ocelot->regfields[i]))
126 return PTR_ERR(ocelot->regfields[i]);
131 EXPORT_SYMBOL(ocelot_regfields_init);
133 static struct regmap_config ocelot_regmap_config = {
139 struct regmap *ocelot_regmap_init(struct ocelot *ocelot, struct resource *res)
143 regs = devm_ioremap_resource(ocelot->dev, res);
145 return ERR_CAST(regs);
147 ocelot_regmap_config.name = res->name;
149 return devm_regmap_init_mmio(ocelot->dev, regs, &ocelot_regmap_config);
151 EXPORT_SYMBOL(ocelot_regmap_init);