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net: dsa: microchip: break KSZ9477 DSA driver into two files

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Break KSZ9477 DSA driver into two files in preparation to add more KSZ
switch drivers.
Add common functions in ksz_common.h so that other KSZ switch drivers
can access code in ksz_common.c.
Add ksz_spi.h for common functions used by KSZ switch SPI drivers.

Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
Reviewed-by: Woojung Huh <Woojung.Huh@microchip.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tristram Ha 2018-11-20 15:55:09 -08:00 committed by David S. Miller
parent 74a7194f15
commit c2e866911e
8 changed files with 1926 additions and 1265 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/dsa/microchip/Kconfig
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@ -1,7 +1,11 @@
config NET_DSA_MICROCHIP_KSZ_COMMON
tristate
menuconfig NET_DSA_MICROCHIP_KSZ9477
tristate "Microchip KSZ9477 series switch support"
depends on NET_DSA
select NET_DSA_TAG_KSZ
select NET_DSA_MICROCHIP_KSZ_COMMON
help
This driver adds support for Microchip KSZ9477 switch chips.

3
drivers/net/dsa/microchip/Makefile
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@ -1,2 +1,3 @@
obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ9477) += ksz_common.o
obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ_COMMON) += ksz_common.o
obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ9477) += ksz9477.o
obj-$(CONFIG_NET_DSA_MICROCHIP_KSZ9477_SPI) += ksz9477_spi.o

1316
drivers/net/dsa/microchip/ksz9477.c Normal file
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File diff suppressed because it is too large Load Diff

143
drivers/net/dsa/microchip/ksz9477_spi.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Microchip KSZ series register access through SPI
* Microchip KSZ9477 series register access through SPI
*
* Copyright (C) 2017-2018 Microchip Technology Inc.
*/
@ -13,6 +13,7 @@
#include <linux/spi/spi.h>
#include "ksz_priv.h"
#include "ksz_spi.h"
/* SPI frame opcodes */
#define KS_SPIOP_RD 3
@ -22,8 +23,11 @@
#define SPI_ADDR_MASK (BIT(SPI_ADDR_SHIFT) - 1)
#define SPI_TURNAROUND_SHIFT 5
static int ksz_spi_read_reg(struct spi_device *spi, u32 reg, u8 *val,
unsigned int len)
/* Enough to read all switch port registers. */
#define SPI_TX_BUF_LEN 0x100
static int ksz9477_spi_read_reg(struct spi_device *spi, u32 reg, u8 *val,
unsigned int len)
{
u32 txbuf;
int ret;
@ -37,27 +41,36 @@ static int ksz_spi_read_reg(struct spi_device *spi, u32 reg, u8 *val,
return ret;
}
static int ksz9477_spi_write_reg(struct spi_device *spi, u32 reg, u8 *val,
unsigned int len)
{
u32 *txbuf = (u32 *)val;
*txbuf = reg & SPI_ADDR_MASK;
*txbuf |= (KS_SPIOP_WR << SPI_ADDR_SHIFT);
*txbuf <<= SPI_TURNAROUND_SHIFT;
*txbuf = cpu_to_be32(*txbuf);
return spi_write(spi, txbuf, 4 + len);
}
static int ksz_spi_read(struct ksz_device *dev, u32 reg, u8 *data,
unsigned int len)
{
struct spi_device *spi = dev->priv;
return ksz_spi_read_reg(spi, reg, data, len);
return ksz9477_spi_read_reg(spi, reg, data, len);
}
static int ksz_spi_read8(struct ksz_device *dev, u32 reg, u8 *val)
static int ksz_spi_write(struct ksz_device *dev, u32 reg, void *data,
unsigned int len)
{
return ksz_spi_read(dev, reg, val, 1);
}
struct spi_device *spi = dev->priv;
static int ksz_spi_read16(struct ksz_device *dev, u32 reg, u16 *val)
{
int ret = ksz_spi_read(dev, reg, (u8 *)val, 2);
if (!ret)
*val = be16_to_cpu(*val);
return ret;
if (len > SPI_TX_BUF_LEN)
len = SPI_TX_BUF_LEN;
memcpy(&dev->txbuf[4], data, len);
return ksz9477_spi_write_reg(spi, reg, dev->txbuf, len);
}
static int ksz_spi_read24(struct ksz_device *dev, u32 reg, u32 *val)
@ -75,72 +88,15 @@ static int ksz_spi_read24(struct ksz_device *dev, u32 reg, u32 *val)
return ret;
}
static int ksz_spi_read32(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret = ksz_spi_read(dev, reg, (u8 *)val, 4);
if (!ret)
*val = be32_to_cpu(*val);
return ret;
}
static int ksz_spi_write_reg(struct spi_device *spi, u32 reg, u8 *val,
unsigned int len)
{
u32 txbuf;
u8 data[12];
int i;
txbuf = reg & SPI_ADDR_MASK;
txbuf |= (KS_SPIOP_WR << SPI_ADDR_SHIFT);
txbuf <<= SPI_TURNAROUND_SHIFT;
txbuf = cpu_to_be32(txbuf);
data[0] = txbuf & 0xFF;
data[1] = (txbuf & 0xFF00) >> 8;
data[2] = (txbuf & 0xFF0000) >> 16;
data[3] = (txbuf & 0xFF000000) >> 24;
for (i = 0; i < len; i++)
data[i + 4] = val[i];
return spi_write(spi, &data, 4 + len);
}
static int ksz_spi_write8(struct ksz_device *dev, u32 reg, u8 value)
{
struct spi_device *spi = dev->priv;
return ksz_spi_write_reg(spi, reg, &value, 1);
}
static int ksz_spi_write16(struct ksz_device *dev, u32 reg, u16 value)
{
struct spi_device *spi = dev->priv;
value = cpu_to_be16(value);
return ksz_spi_write_reg(spi, reg, (u8 *)&value, 2);
}
static int ksz_spi_write24(struct ksz_device *dev, u32 reg, u32 value)
{
struct spi_device *spi = dev->priv;
/* make it to big endian 24bit from MSB */
value <<= 8;
value = cpu_to_be32(value);
return ksz_spi_write_reg(spi, reg, (u8 *)&value, 3);
return ksz_spi_write(dev, reg, &value, 3);
}
static int ksz_spi_write32(struct ksz_device *dev, u32 reg, u32 value)
{
struct spi_device *spi = dev->priv;
value = cpu_to_be32(value);
return ksz_spi_write_reg(spi, reg, (u8 *)&value, 4);
}
static const struct ksz_io_ops ksz_spi_ops = {
static const struct ksz_io_ops ksz9477_spi_ops = {
.read8 = ksz_spi_read8,
.read16 = ksz_spi_read16,
.read24 = ksz_spi_read24,
@ -149,21 +105,27 @@ static const struct ksz_io_ops ksz_spi_ops = {
.write16 = ksz_spi_write16,
.write24 = ksz_spi_write24,
.write32 = ksz_spi_write32,
.get = ksz_spi_get,
.set = ksz_spi_set,
};
static int ksz_spi_probe(struct spi_device *spi)
static int ksz9477_spi_probe(struct spi_device *spi)
{
struct ksz_device *dev;
int ret;
dev = ksz_switch_alloc(&spi->dev, &ksz_spi_ops, spi);
dev = ksz_switch_alloc(&spi->dev, &ksz9477_spi_ops, spi);
if (!dev)
return -ENOMEM;
if (spi->dev.platform_data)
dev->pdata = spi->dev.platform_data;
ret = ksz_switch_register(dev);
dev->txbuf = devm_kzalloc(dev->dev, 4 + SPI_TX_BUF_LEN, GFP_KERNEL);
ret = ksz9477_switch_register(dev);
/* Main DSA driver may not be started yet. */
if (ret)
return ret;
@ -172,7 +134,7 @@ static int ksz_spi_probe(struct spi_device *spi)
return 0;
}
static int ksz_spi_remove(struct spi_device *spi)
static int ksz9477_spi_remove(struct spi_device *spi)
{
struct ksz_device *dev = spi_get_drvdata(spi);
@ -182,25 +144,34 @@ static int ksz_spi_remove(struct spi_device *spi)
return 0;
}
static const struct of_device_id ksz_dt_ids[] = {
static void ksz9477_spi_shutdown(struct spi_device *spi)
{
struct ksz_device *dev = spi_get_drvdata(spi);
if (dev && dev->dev_ops->shutdown)
dev->dev_ops->shutdown(dev);
}
static const struct of_device_id ksz9477_dt_ids[] = {
{ .compatible = "microchip,ksz9477" },
{ .compatible = "microchip,ksz9897" },
{},
};
MODULE_DEVICE_TABLE(of, ksz_dt_ids);
MODULE_DEVICE_TABLE(of, ksz9477_dt_ids);
static struct spi_driver ksz_spi_driver = {
static struct spi_driver ksz9477_spi_driver = {
.driver = {
.name = "ksz9477-switch",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(ksz_dt_ids),
.of_match_table = of_match_ptr(ksz9477_dt_ids),
},
.probe = ksz_spi_probe,
.remove = ksz_spi_remove,
.probe = ksz9477_spi_probe,
.remove = ksz9477_spi_remove,
.shutdown = ksz9477_spi_shutdown,
};
module_spi_driver(ksz_spi_driver);
module_spi_driver(ksz9477_spi_driver);
MODULE_AUTHOR("Woojung Huh <Woojung.Huh@microchip.com>");
MODULE_DESCRIPTION("Microchip KSZ Series Switch SPI access Driver");
MODULE_DESCRIPTION("Microchip KSZ9477 Series Switch SPI access Driver");
MODULE_LICENSE("GPL");

1216
drivers/net/dsa/microchip/ksz_common.c
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File diff suppressed because it is too large Load Diff

214
drivers/net/dsa/microchip/ksz_common.h Normal file
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@ -0,0 +1,214 @@
/* SPDX-License-Identifier: GPL-2.0
* Microchip switch driver common header
*
* Copyright (C) 2017-2018 Microchip Technology Inc.
*/
#ifndef __KSZ_COMMON_H
#define __KSZ_COMMON_H
void ksz_update_port_member(struct ksz_device *dev, int port);
/* Common DSA access functions */
int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg);
int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val);
int ksz_sset_count(struct dsa_switch *ds, int port, int sset);
int ksz_port_bridge_join(struct dsa_switch *ds, int port,
struct net_device *br);
void ksz_port_bridge_leave(struct dsa_switch *ds, int port,
struct net_device *br);
void ksz_port_fast_age(struct dsa_switch *ds, int port);
int ksz_port_vlan_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_vlan *vlan);
int ksz_port_fdb_dump(struct dsa_switch *ds, int port, dsa_fdb_dump_cb_t *cb,
void *data);
int ksz_port_mdb_prepare(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
void ksz_port_mdb_add(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
int ksz_port_mdb_del(struct dsa_switch *ds, int port,
const struct switchdev_obj_port_mdb *mdb);
int ksz_enable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
void ksz_disable_port(struct dsa_switch *ds, int port, struct phy_device *phy);
/* Common register access functions */
static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read8(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read16(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read24(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read24(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read32(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write8(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write16(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write24(struct ksz_device *dev, u32 reg, u32 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write24(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write32(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_get(struct ksz_device *dev, u32 reg, void *data,
size_t len)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->get(dev, reg, data, len);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_set(struct ksz_device *dev, u32 reg, void *data,
size_t len)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->set(dev, reg, data, len);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
u8 *data)
{
ksz_read8(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
u16 *data)
{
ksz_read16(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
u32 *data)
{
ksz_read32(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
u8 data)
{
ksz_write8(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
u16 data)
{
ksz_write16(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
u32 data)
{
ksz_write32(dev, dev->dev_ops->get_port_addr(port, offset), data);
}
static void ksz_cfg(struct ksz_device *dev, u32 addr, u8 bits, bool set)
{
u8 data;
ksz_read8(dev, addr, &data);
if (set)
data |= bits;
else
data &= ~bits;
ksz_write8(dev, addr, data);
}
static void ksz_port_cfg(struct ksz_device *dev, int port, int offset, u8 bits,
bool set)
{
u32 addr;
u8 data;
addr = dev->dev_ops->get_port_addr(port, offset);
ksz_read8(dev, addr, &data);
if (set)
data |= bits;
else
data &= ~bits;
ksz_write8(dev, addr, data);
}
#endif

226
drivers/net/dsa/microchip/ksz_priv.h
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@ -22,6 +22,27 @@ struct vlan_table {
u32 table[3];
};
struct ksz_port_mib {
u8 cnt_ptr;
u64 *counters;
};
struct ksz_port {
u16 member;
u16 vid_member;
int stp_state;
struct phy_device phydev;
u32 on:1; /* port is not disabled by hardware */
u32 phy:1; /* port has a PHY */
u32 fiber:1; /* port is fiber */
u32 sgmii:1; /* port is SGMII */
u32 force:1;
u32 link_just_down:1; /* link just goes down */
struct ksz_port_mib mib;
};
struct ksz_device {
struct dsa_switch *ds;
struct ksz_platform_data *pdata;
@ -32,6 +53,7 @@ struct ksz_device {
struct mutex alu_mutex; /* ALU access */
struct mutex vlan_mutex; /* vlan access */
const struct ksz_io_ops *ops;
const struct ksz_dev_ops *dev_ops;
struct device *dev;
@ -44,11 +66,37 @@ struct ksz_device {
int num_statics;
int cpu_port; /* port connected to CPU */
int cpu_ports; /* port bitmap can be cpu port */
int phy_port_cnt;
int port_cnt;
int reg_mib_cnt;
int mib_cnt;
int mib_port_cnt;
int last_port; /* ports after that not used */
phy_interface_t interface;
u32 regs_size;
struct vlan_table *vlan_cache;
u64 mib_value[TOTAL_SWITCH_COUNTER_NUM];
u8 *txbuf;
struct ksz_port *ports;
struct timer_list mib_read_timer;
struct work_struct mib_read;
unsigned long mib_read_interval;
u16 br_member;
u16 member;
u16 live_ports;
u16 on_ports; /* ports enabled by DSA */
u16 rx_ports;
u16 tx_ports;
u16 mirror_rx;
u16 mirror_tx;
u32 features; /* chip specific features */
u32 overrides; /* chip functions set by user */
u16 host_mask;
u16 port_mask;
};
struct ksz_io_ops {
@ -60,140 +108,60 @@ struct ksz_io_ops {
int (*write16)(struct ksz_device *dev, u32 reg, u16 value);
int (*write24)(struct ksz_device *dev, u32 reg, u32 value);
int (*write32)(struct ksz_device *dev, u32 reg, u32 value);
int (*phy_read16)(struct ksz_device *dev, int addr, int reg,
u16 *value);
int (*phy_write16)(struct ksz_device *dev, int addr, int reg,
u16 value);
int (*get)(struct ksz_device *dev, u32 reg, void *data, size_t len);
int (*set)(struct ksz_device *dev, u32 reg, void *data, size_t len);
};
struct alu_struct {
/* entry 1 */
u8 is_static:1;
u8 is_src_filter:1;
u8 is_dst_filter:1;
u8 prio_age:3;
u32 _reserv_0_1:23;
u8 mstp:3;
/* entry 2 */
u8 is_override:1;
u8 is_use_fid:1;
u32 _reserv_1_1:23;
u8 port_forward:7;
/* entry 3 & 4*/
u32 _reserv_2_1:9;
u8 fid:7;
u8 mac[ETH_ALEN];
};
struct ksz_dev_ops {
u32 (*get_port_addr)(int port, int offset);
void (*cfg_port_member)(struct ksz_device *dev, int port, u8 member);
void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
void (*port_setup)(struct ksz_device *dev, int port, bool cpu_port);
void (*r_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
void (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
int (*r_dyn_mac_table)(struct ksz_device *dev, u16 addr, u8 *mac_addr,
u8 *fid, u8 *src_port, u8 *timestamp,
u16 *entries);
int (*r_sta_mac_table)(struct ksz_device *dev, u16 addr,
struct alu_struct *alu);
void (*w_sta_mac_table)(struct ksz_device *dev, u16 addr,
struct alu_struct *alu);
void (*r_mib_cnt)(struct ksz_device *dev, int port, u16 addr,
u64 *cnt);
void (*r_mib_pkt)(struct ksz_device *dev, int port, u16 addr,
u64 *dropped, u64 *cnt);
void (*port_init_cnt)(struct ksz_device *dev, int port);
int (*shutdown)(struct ksz_device *dev);
int (*detect)(struct ksz_device *dev);
int (*init)(struct ksz_device *dev);
void (*exit)(struct ksz_device *dev);
};
struct ksz_device *ksz_switch_alloc(struct device *base,
const struct ksz_io_ops *ops, void *priv);
int ksz_switch_detect(struct ksz_device *dev);
int ksz_switch_register(struct ksz_device *dev);
int ksz_switch_register(struct ksz_device *dev,
const struct ksz_dev_ops *ops);
void ksz_switch_remove(struct ksz_device *dev);
static inline int ksz_read8(struct ksz_device *dev, u32 reg, u8 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read8(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read16(struct ksz_device *dev, u32 reg, u16 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read16(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read24(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read24(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_read32(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->read32(dev, reg, val);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write8(struct ksz_device *dev, u32 reg, u8 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write8(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write16(struct ksz_device *dev, u32 reg, u16 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write16(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write24(struct ksz_device *dev, u32 reg, u32 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write24(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline int ksz_write32(struct ksz_device *dev, u32 reg, u32 value)
{
int ret;
mutex_lock(&dev->reg_mutex);
ret = dev->ops->write32(dev, reg, value);
mutex_unlock(&dev->reg_mutex);
return ret;
}
static inline void ksz_pread8(struct ksz_device *dev, int port, int offset,
u8 *data)
{
ksz_read8(dev, PORT_CTRL_ADDR(port, offset), data);
}
static inline void ksz_pread16(struct ksz_device *dev, int port, int offset,
u16 *data)
{
ksz_read16(dev, PORT_CTRL_ADDR(port, offset), data);
}
static inline void ksz_pread32(struct ksz_device *dev, int port, int offset,
u32 *data)
{
ksz_read32(dev, PORT_CTRL_ADDR(port, offset), data);
}
static inline void ksz_pwrite8(struct ksz_device *dev, int port, int offset,
u8 data)
{
ksz_write8(dev, PORT_CTRL_ADDR(port, offset), data);
}
static inline void ksz_pwrite16(struct ksz_device *dev, int port, int offset,
u16 data)
{
ksz_write16(dev, PORT_CTRL_ADDR(port, offset), data);
}
static inline void ksz_pwrite32(struct ksz_device *dev, int port, int offset,
u32 data)
{
ksz_write32(dev, PORT_CTRL_ADDR(port, offset), data);
}
int ksz9477_switch_register(struct ksz_device *dev);
#endif

69
drivers/net/dsa/microchip/ksz_spi.h Normal file
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/* SPDX-License-Identifier: GPL-2.0
* Microchip KSZ series SPI access common header
*
* Copyright (C) 2017-2018 Microchip Technology Inc.
* Tristram Ha <Tristram.Ha@microchip.com>
*/
#ifndef __KSZ_SPI_H
#define __KSZ_SPI_H
/* Chip dependent SPI access */
static int ksz_spi_read(struct ksz_device *dev, u32 reg, u8 *data,
unsigned int len);
static int ksz_spi_write(struct ksz_device *dev, u32 reg, void *data,
unsigned int len);
static int ksz_spi_read8(struct ksz_device *dev, u32 reg, u8 *val)
{
return ksz_spi_read(dev, reg, val, 1);
}
static int ksz_spi_read16(struct ksz_device *dev, u32 reg, u16 *val)
{
int ret = ksz_spi_read(dev, reg, (u8 *)val, 2);
if (!ret)
*val = be16_to_cpu(*val);
return ret;
}
static int ksz_spi_read32(struct ksz_device *dev, u32 reg, u32 *val)
{
int ret = ksz_spi_read(dev, reg, (u8 *)val, 4);
if (!ret)
*val = be32_to_cpu(*val);
return ret;
}
static int ksz_spi_write8(struct ksz_device *dev, u32 reg, u8 value)
{
return ksz_spi_write(dev, reg, &value, 1);
}
static int ksz_spi_write16(struct ksz_device *dev, u32 reg, u16 value)
{
value = cpu_to_be16(value);
return ksz_spi_write(dev, reg, &value, 2);
}
static int ksz_spi_write32(struct ksz_device *dev, u32 reg, u32 value)
{
value = cpu_to_be32(value);
return ksz_spi_write(dev, reg, &value, 4);
}
static int ksz_spi_get(struct ksz_device *dev, u32 reg, void *data, size_t len)
{
return ksz_spi_read(dev, reg, data, len);
}
static int ksz_spi_set(struct ksz_device *dev, u32 reg, void *data, size_t len)
{
return ksz_spi_write(dev, reg, data, len);
}
#endif