diff options
Diffstat (limited to 'drivers/net/ksz_common.h')
| -rw-r--r-- | drivers/net/ksz_common.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/drivers/net/ksz_common.h b/drivers/net/ksz_common.h new file mode 100644 index 0000000000..44b5055ee3 --- /dev/null +++ b/drivers/net/ksz_common.h @@ -0,0 +1,154 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef NET_KSZ_COMMON_H_ +#define NET_KSZ_COMMON_H_ + +#include <linux/swab.h> +#include <linux/regmap.h> +#include <linux/bitops.h> +#include <platform_data/ksz9477_reg.h> + +struct ksz_switch { + struct spi_device *spi; + struct i2c_client *i2c; + struct dsa_switch ds; + struct device *dev; + int phy_port_cnt; + u32 chip_id; + u8 features; + struct regmap *regmap[3]; +}; + +static inline int ksz_read8(struct ksz_switch *priv, u32 reg, u8 *val) +{ + unsigned int value = 0; + int ret = regmap_read(priv->regmap[0], reg, &value); + + *val = value; + return ret; +} + +static inline int ksz_read16(struct ksz_switch *priv, u32 reg, u16 *val) +{ + unsigned int value = 0; + int ret = regmap_read(priv->regmap[1], reg, &value); + + *val = value; + return ret; +} + +static inline int ksz_read32(struct ksz_switch *priv, u32 reg, u32 *val) +{ + unsigned int value = 0; + int ret = regmap_read(priv->regmap[2], reg, &value); + + *val = value; + return ret; +} + +static inline int ksz_read64(struct ksz_switch *priv, u32 reg, u64 *val) +{ + u32 value[2]; + int ret; + + ret = regmap_bulk_read(priv->regmap[2], reg, value, 2); + if (!ret) + *val = (u64)value[0] << 32 | value[1]; + + return ret; +} + +static inline int ksz_write8(struct ksz_switch *priv, u32 reg, u8 value) +{ + return regmap_write(priv->regmap[0], reg, value); +} + +static inline int ksz_write16(struct ksz_switch *priv, u32 reg, u16 value) +{ + return regmap_write(priv->regmap[1], reg, value); +} + +static inline int ksz_write32(struct ksz_switch *priv, u32 reg, u32 value) +{ + return regmap_write(priv->regmap[2], reg, value); +} + +static inline int ksz_write64(struct ksz_switch *priv, u32 reg, u64 value) +{ + u32 val[2]; + + /* Ick! ToDo: Add 64bit R/W to regmap on 32bit systems */ + value = swab64(value); + val[0] = swab32(value & 0xffffffffULL); + val[1] = swab32(value >> 32ULL); + + return regmap_bulk_write(priv->regmap[2], reg, val, 2); +} + +static inline int ksz_pread8(struct ksz_switch *priv, int port, int reg, u8 *val) +{ + return ksz_read8(priv, PORT_CTRL_ADDR(port, reg), val); +} + +static inline int ksz_pwrite8(struct ksz_switch *priv, int port, int reg, u8 val) +{ + return ksz_write8(priv, PORT_CTRL_ADDR(port, reg), val); +} + +static inline int ksz_pread16(struct ksz_switch *priv, int port, int reg, u16 *val) +{ + return ksz_read16(priv, PORT_CTRL_ADDR(port, reg), val); +} + +static inline int ksz_pwrite16(struct ksz_switch *priv, int port, int reg, u16 val) +{ + return ksz_write16(priv, PORT_CTRL_ADDR(port, reg), val); +} + +static inline int ksz_pwrite32(struct ksz_switch *priv, int port, int reg, u32 val) +{ + return ksz_write32(priv, PORT_CTRL_ADDR(port, reg), val); +} + +static void ksz_cfg(struct ksz_switch *priv, u32 addr, u8 bits, bool set) +{ + regmap_update_bits(priv->regmap[0], addr, bits, set ? bits : 0); +} + +/* Regmap tables generation */ +#define KSZ_SPI_OP_RD 3 +#define KSZ_SPI_OP_WR 2 + +#define swabnot_used(x) 0 + +#define KSZ_SPI_OP_FLAG_MASK(opcode, swp, regbits, regpad) \ + swab##swp((opcode) << ((regbits) + (regpad))) + +#define KSZ_REGMAP_ENTRY_COUNT 3 + +#define KSZ_REGMAP_ENTRY(width, swp, regbits, regpad, regalign) \ + { \ + .name = #width, \ + .val_bits = (width), \ + .reg_stride = 1, \ + .reg_bits = (regbits) + (regalign), \ + .pad_bits = (regpad), \ + .max_register = BIT(regbits) - 1, \ + .read_flag_mask = \ + KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_RD, swp, \ + regbits, regpad), \ + .write_flag_mask = \ + KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp, \ + regbits, regpad), \ + .reg_format_endian = REGMAP_ENDIAN_BIG, \ + .val_format_endian = REGMAP_ENDIAN_BIG \ + } + +#define KSZ_REGMAP_TABLE(ksz, swp, regbits, regpad, regalign) \ + static const struct regmap_config ksz##_regmap_config[KSZ_REGMAP_ENTRY_COUNT] = { \ + KSZ_REGMAP_ENTRY(8, swp, (regbits), (regpad), (regalign)), \ + KSZ_REGMAP_ENTRY(16, swp, (regbits), (regpad), (regalign)), \ + KSZ_REGMAP_ENTRY(32, swp, (regbits), (regpad), (regalign)), \ + } + + +#endif |