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net: dsa: microchip: allow to pass return values for PHY read/write accesses 

PHY access may end with errors on different levels. So, allow to forward
return values where possible.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oleksij Rempel 2022-08-26 12:56:21 +02:00 committed by David S. Miller
parent d7539fc2b4
commit 8f42045679
8 changed files with 34 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/dsa/microchip/ksz8.h
View File

@ -17,8 +17,8 @@ u32 ksz8_get_port_addr(int port, int offset);
void ksz8_cfg_port_member(struct ksz_device *dev, int port, u8 member);
void ksz8_flush_dyn_mac_table(struct ksz_device *dev, int port);
void ksz8_port_setup(struct ksz_device *dev, int port, bool cpu_port);
void ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
void ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
int ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
int ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
int ksz8_r_dyn_mac_table(struct ksz_device *dev, u16 addr, u8 *mac_addr,
u8 *fid, u8 *src_port, u8 *timestamp, u16 *entries);
int ksz8_r_sta_mac_table(struct ksz_device *dev, u16 addr,

8
drivers/net/dsa/microchip/ksz8795.c
View File

@ -552,7 +552,7 @@ static void ksz8_w_vlan_table(struct ksz_device *dev, u16 vid, u16 vlan)
ksz8_w_table(dev, TABLE_VLAN, addr, buf);
}
void ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
int ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
{
u8 restart, speed, ctrl, link;
int processed = true;
@ -674,9 +674,11 @@ void ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
}
if (processed)
*val = data;
return 0;
}
void ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
int ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
{
u8 restart, speed, ctrl, data;
const u16 *regs;
@ -787,6 +789,8 @@ void ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
default:
break;
}
return 0;
}
void ksz8_cfg_port_member(struct ksz_device *dev, int port, u8 member)

12
drivers/net/dsa/microchip/ksz9477.c
View File

@ -274,7 +274,7 @@ static void ksz9477_r_phy_quirks(struct ksz_device *dev, u16 addr, u16 reg,
*data &= ~(BMSR_ESTATEN | BMSR_ERCAP);
}
void ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
int ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
{
u16 val = 0xffff;
@ -322,19 +322,23 @@ void ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
}
*data = val;
return 0;
}
void ksz9477_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val)
int ksz9477_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val)
{
/* No real PHY after this. */
if (addr >= dev->phy_port_cnt)
return;
return 0;
/* No gigabit support. Do not write to this register. */
if (!dev->info->gbit_capable[addr] && reg == MII_CTRL1000)
return;
return 0;
ksz_pwrite16(dev, addr, 0x100 + (reg << 1), val);
return 0;
}
void ksz9477_cfg_port_member(struct ksz_device *dev, int port, u8 member)

4
drivers/net/dsa/microchip/ksz9477.h
View File

@ -16,8 +16,8 @@ u32 ksz9477_get_port_addr(int port, int offset);
void ksz9477_cfg_port_member(struct ksz_device *dev, int port, u8 member);
void ksz9477_flush_dyn_mac_table(struct ksz_device *dev, int port);
void ksz9477_port_setup(struct ksz_device *dev, int port, bool cpu_port);
void ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data);
void ksz9477_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val);
int ksz9477_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data);
int ksz9477_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val);
void ksz9477_r_mib_cnt(struct ksz_device *dev, int port, u16 addr, u64 *cnt);
void ksz9477_r_mib_pkt(struct ksz_device *dev, int port, u16 addr,
u64 *dropped, u64 *cnt);

10
drivers/net/dsa/microchip/ksz_common.c
View File

@ -1132,8 +1132,11 @@ static int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg)
{
struct ksz_device *dev = ds->priv;
u16 val = 0xffff;
int ret;
dev->dev_ops->r_phy(dev, addr, reg, &val);
ret = dev->dev_ops->r_phy(dev, addr, reg, &val);
if (ret)
return ret;
return val;
}
@ -1141,8 +1144,11 @@ static int ksz_phy_read16(struct dsa_switch *ds, int addr, int reg)
static int ksz_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val)
{
struct ksz_device *dev = ds->priv;
int ret;
dev->dev_ops->w_phy(dev, addr, reg, val);
ret = dev->dev_ops->w_phy(dev, addr, reg, val);
if (ret)
return ret;
return 0;
}

4
drivers/net/dsa/microchip/ksz_common.h
View File

@ -262,8 +262,8 @@ struct ksz_dev_ops {
void (*flush_dyn_mac_table)(struct ksz_device *dev, int port);
void (*port_cleanup)(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_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 *val);
int (*w_phy)(struct ksz_device *dev, u16 phy, u16 reg, u16 val);
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,

4
drivers/net/dsa/microchip/lan937x.h
View File

@ -12,8 +12,8 @@ void lan937x_port_setup(struct ksz_device *dev, int port, bool cpu_port);
void lan937x_config_cpu_port(struct dsa_switch *ds);
int lan937x_switch_init(struct ksz_device *dev);
void lan937x_switch_exit(struct ksz_device *dev);
void lan937x_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data);
void lan937x_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val);
int lan937x_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data);
int lan937x_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val);
int lan937x_change_mtu(struct ksz_device *dev, int port, int new_mtu);
void lan937x_phylink_get_caps(struct ksz_device *dev, int port,
struct phylink_config *config);

8
drivers/net/dsa/microchip/lan937x_main.c
View File

@ -128,14 +128,14 @@ static int lan937x_internal_phy_read(struct ksz_device *dev, int addr, int reg,
return ksz_read16(dev, REG_VPHY_IND_DATA__2, val);
}
void lan937x_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
int lan937x_r_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 *data)
{
lan937x_internal_phy_read(dev, addr, reg, data);
return lan937x_internal_phy_read(dev, addr, reg, data);
}
void lan937x_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val)
int lan937x_w_phy(struct ksz_device *dev, u16 addr, u16 reg, u16 val)
{
lan937x_internal_phy_write(dev, addr, reg, val);
return lan937x_internal_phy_write(dev, addr, reg, val);
}
static int lan937x_sw_mdio_read(struct mii_bus *bus, int addr, int regnum)