tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0
2 * Microchip switch driver common header
3 *
4 * Copyright (C) 2017-2019 Microchip Technology Inc.
5 */
6
7#ifndef __KSZ_COMMON_H
8#define __KSZ_COMMON_H
9
10#include <linux/regmap.h>
11
12void ksz_port_cleanup(struct ksz_device *dev, int port);
13void ksz_update_port_member(struct ksz_device *dev, int port);
14void ksz_init_mib_timer(struct ksz_device *dev);
15
16/* Common DSA access functions */
17
18int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
19int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
20void ksz_adjust_link(struct dsa_switch *ds, int port,
21 struct phy_device *phydev);
22int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
23void ksz_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *buf);
24int ksz_port_bridge_join(struct dsa_switch *ds, int port,
25 struct net_device *br);
26void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
27 struct net_device *br);
28void ksz_port_fast_age(struct dsa_switch *ds, int port);
29int ksz_port_vlan_prepare(struct dsa_switch *ds, int port,
30 const struct switchdev_obj_port_vlan *vlan);
31int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
32 void *data);
33int ksz_port_mdb_prepare(struct dsa_switch *ds, int port,
34 const struct switchdev_obj_port_mdb *mdb);
35void ksz_port_mdb_add(struct dsa_switch *ds, int port,
36 const struct switchdev_obj_port_mdb *mdb);
37int ksz_port_mdb_del(struct dsa_switch *ds, int port,
38 const struct switchdev_obj_port_mdb *mdb);
39int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
40void ksz_disable_port(struct dsa_switch *ds, int port);
41
42/* Common register access functions */
43
44static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
45{
46 unsigned int value;
47 int ret = regmap_read(dev->regmap[0], reg, &value);
48
49 *val = value;
50 return ret;
51}
52
53static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
54{
55 unsigned int value;
56 int ret = regmap_read(dev->regmap[1], reg, &value);
57
58 *val = value;
59 return ret;
60}
61
62static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
63{
64 unsigned int value;
65 int ret = regmap_read(dev->regmap[2], reg, &value);
66
67 *val = value;
68 return ret;
69}
70
71static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
72{
73 return regmap_write(dev->regmap[0], reg, value);
74}
75
76static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
77{
78 return regmap_write(dev->regmap[1], reg, value);
79}
80
81static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
82{
83 return regmap_write(dev->regmap[2], reg, value);
84}
85
86static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
87 u8 *data)
88{
89 ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
90}
91
92static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
93 u16 *data)
94{
95 ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
96}
97
98static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
99 u32 *data)
100{
101 ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
102}
103
104static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
105 u8 data)
106{
107 ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
108}
109
110static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
111 u16 data)
112{
113 ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
114}
115
116static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
117 u32 data)
118{
119 ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
120}
121
122/* Regmap tables generation */
123#define KSZ_SPI_OP_RD 3
124#define KSZ_SPI_OP_WR 2
125
126#define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \
127 swab##swp((opcode) << ((regbits) + (regpad)))
128
129#define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \
130 { \
131 .name = #width, \
132 .val_bits = (width), \
133 .reg_stride = (width) / 8, \
134 .reg_bits = (regbits) + (regalign), \
135 .pad_bits = (regpad), \
136 .max_register = BIT(regbits) - 1, \
137 .cache_type = REGCACHE_NONE, \
138 .read_flag_mask = \
139 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \
140 regbits, regpad), \
141 .write_flag_mask = \
142 KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \
143 regbits, regpad), \
144 .reg_format_endian = REGMAP_ENDIAN_BIG, \
145 .val_format_endian = REGMAP_ENDIAN_BIG \
146 }
147
148#define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \
149 static const struct regmap_config ksz##_regmap_config[] = { \
150 KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \
151 KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \
152 KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \
153 }
154
155#endif