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Message-Id: <1423937871-9180-2-git-send-email-andrew@lunn.ch> Date: Sat, 14 Feb 2015 19:17:50 +0100 From: Andrew Lunn <andrew@...n.ch> To: davem@...emloft.net, linux@...ck-us.net Cc: netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch> Subject: [PATCH 1/2] net: dsa: mv88e6352: Refactor shareable code The mv88e6352 allows access to the port phys via an internal mdio bus which is accessed using registers in the GLOBAL 2 range. The mv88e6171 and probably other devices use the same mechanism. Move this code into the shared mv88e6xxx.c library. Signed-off-by: Andrew Lunn <andrew@...n.ch> --- drivers/net/dsa/mv88e6352.c | 77 +++++++-------------------------------------- drivers/net/dsa/mv88e6xxx.c | 53 +++++++++++++++++++++++++++++++ drivers/net/dsa/mv88e6xxx.h | 6 ++++ 3 files changed, 71 insertions(+), 65 deletions(-) diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c index e13adc7b3dda..1ebd8f96072a 100644 --- a/drivers/net/dsa/mv88e6352.c +++ b/drivers/net/dsa/mv88e6352.c @@ -22,59 +22,6 @@ #include <net/dsa.h> #include "mv88e6xxx.h" -static int mv88e6352_wait(struct dsa_switch *ds, int reg, int offset, u16 mask) -{ - unsigned long timeout = jiffies + HZ / 10; - - while (time_before(jiffies, timeout)) { - int ret; - - ret = REG_READ(reg, offset); - if (!(ret & mask)) - return 0; - - usleep_range(1000, 2000); - } - return -ETIMEDOUT; -} - -static inline int mv88e6352_phy_wait(struct dsa_switch *ds) -{ - return mv88e6352_wait(ds, REG_GLOBAL2, 0x18, 0x8000); -} - -static inline int mv88e6352_eeprom_load_wait(struct dsa_switch *ds) -{ - return mv88e6352_wait(ds, REG_GLOBAL2, 0x14, 0x0800); -} - -static inline int mv88e6352_eeprom_busy_wait(struct dsa_switch *ds) -{ - return mv88e6352_wait(ds, REG_GLOBAL2, 0x14, 0x8000); -} - -static int __mv88e6352_phy_read(struct dsa_switch *ds, int addr, int regnum) -{ - int ret; - - REG_WRITE(REG_GLOBAL2, 0x18, 0x9800 | (addr << 5) | regnum); - - ret = mv88e6352_phy_wait(ds); - if (ret < 0) - return ret; - - return REG_READ(REG_GLOBAL2, 0x19); -} - -static int __mv88e6352_phy_write(struct dsa_switch *ds, int addr, int regnum, - u16 val) -{ - REG_WRITE(REG_GLOBAL2, 0x19, val); - REG_WRITE(REG_GLOBAL2, 0x18, 0x9400 | (addr << 5) | regnum); - - return mv88e6352_phy_wait(ds); -} - static char *mv88e6352_probe(struct device *host_dev, int sw_addr) { struct mii_bus *bus = dsa_host_dev_to_mii_bus(host_dev); @@ -346,12 +293,12 @@ static int mv88e6352_phy_page_read(struct dsa_switch *ds, int ret; mutex_lock(&ps->phy_mutex); - ret = __mv88e6352_phy_write(ds, port, 0x16, page); + ret = mv88e6xxx_phy_write_indirect(ds, port, 0x16, page); if (ret < 0) goto error; - ret = __mv88e6352_phy_read(ds, port, reg); + ret = mv88e6xxx_phy_read_indirect(ds, port, reg); error: - __mv88e6352_phy_write(ds, port, 0x16, 0x0); + mv88e6xxx_phy_write_indirect(ds, port, 0x16, 0x0); mutex_unlock(&ps->phy_mutex); return ret; } @@ -363,13 +310,13 @@ static int mv88e6352_phy_page_write(struct dsa_switch *ds, int ret; mutex_lock(&ps->phy_mutex); - ret = __mv88e6352_phy_write(ds, port, 0x16, page); + ret = mv88e6xxx_phy_write_indirect(ds, port, 0x16, page); if (ret < 0) goto error; - ret = __mv88e6352_phy_write(ds, port, reg, val); + ret = mv88e6xxx_phy_write_indirect(ds, port, reg, val); error: - __mv88e6352_phy_write(ds, port, 0x16, 0x0); + mv88e6xxx_phy_write_indirect(ds, port, 0x16, 0x0); mutex_unlock(&ps->phy_mutex); return ret; } @@ -482,7 +429,7 @@ mv88e6352_phy_read(struct dsa_switch *ds, int port, int regnum) return addr; mutex_lock(&ps->phy_mutex); - ret = __mv88e6352_phy_read(ds, addr, regnum); + ret = mv88e6xxx_phy_read_indirect(ds, addr, regnum); mutex_unlock(&ps->phy_mutex); return ret; @@ -499,7 +446,7 @@ mv88e6352_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) return addr; mutex_lock(&ps->phy_mutex); - ret = __mv88e6352_phy_write(ds, addr, regnum, val); + ret = mv88e6xxx_phy_write_indirect(ds, addr, regnum, val); mutex_unlock(&ps->phy_mutex); return ret; @@ -553,7 +500,7 @@ static int mv88e6352_read_eeprom_word(struct dsa_switch *ds, int addr) if (ret < 0) goto error; - ret = mv88e6352_eeprom_busy_wait(ds); + ret = mv88e6xxx_eeprom_busy_wait(ds); if (ret < 0) goto error; @@ -576,7 +523,7 @@ static int mv88e6352_get_eeprom(struct dsa_switch *ds, eeprom->magic = 0xc3ec4951; - ret = mv88e6352_eeprom_load_wait(ds); + ret = mv88e6xxx_eeprom_load_wait(ds); if (ret < 0) return ret; @@ -657,7 +604,7 @@ static int mv88e6352_write_eeprom_word(struct dsa_switch *ds, int addr, if (ret < 0) goto error; - ret = mv88e6352_eeprom_busy_wait(ds); + ret = mv88e6xxx_eeprom_busy_wait(ds); error: mutex_unlock(&ps->eeprom_mutex); return ret; @@ -681,7 +628,7 @@ static int mv88e6352_set_eeprom(struct dsa_switch *ds, len = eeprom->len; eeprom->len = 0; - ret = mv88e6352_eeprom_load_wait(ds); + ret = mv88e6xxx_eeprom_load_wait(ds); if (ret < 0) return ret; diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c index 3e7e31a6abb7..a83ace0803e7 100644 --- a/drivers/net/dsa/mv88e6xxx.c +++ b/drivers/net/dsa/mv88e6xxx.c @@ -596,6 +596,59 @@ error: } #endif /* CONFIG_NET_DSA_HWMON */ +static int mv88e6xxx_wait(struct dsa_switch *ds, int reg, int offset, u16 mask) +{ + unsigned long timeout = jiffies + HZ / 10; + + while (time_before(jiffies, timeout)) { + int ret; + + ret = REG_READ(reg, offset); + if (!(ret & mask)) + return 0; + + usleep_range(1000, 2000); + } + return -ETIMEDOUT; +} + +int mv88e6xxx_phy_wait(struct dsa_switch *ds) +{ + return mv88e6xxx_wait(ds, REG_GLOBAL2, 0x18, 0x8000); +} + +int mv88e6xxx_eeprom_load_wait(struct dsa_switch *ds) +{ + return mv88e6xxx_wait(ds, REG_GLOBAL2, 0x14, 0x0800); +} + +int mv88e6xxx_eeprom_busy_wait(struct dsa_switch *ds) +{ + return mv88e6xxx_wait(ds, REG_GLOBAL2, 0x14, 0x8000); +} + +int mv88e6xxx_phy_read_indirect(struct dsa_switch *ds, int addr, int regnum) +{ + int ret; + + REG_WRITE(REG_GLOBAL2, 0x18, 0x9800 | (addr << 5) | regnum); + + ret = mv88e6xxx_phy_wait(ds); + if (ret < 0) + return ret; + + return REG_READ(REG_GLOBAL2, 0x19); +} + +int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum, + u16 val) +{ + REG_WRITE(REG_GLOBAL2, 0x19, val); + REG_WRITE(REG_GLOBAL2, 0x18, 0x9400 | (addr << 5) | regnum); + + return mv88e6xxx_phy_wait(ds); +} + static int __init mv88e6xxx_init(void) { #if IS_ENABLED(CONFIG_NET_DSA_MV88E6131) diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h index 03e397efde36..72942271bb67 100644 --- a/drivers/net/dsa/mv88e6xxx.h +++ b/drivers/net/dsa/mv88e6xxx.h @@ -82,6 +82,12 @@ int mv88e6xxx_get_regs_len(struct dsa_switch *ds, int port); void mv88e6xxx_get_regs(struct dsa_switch *ds, int port, struct ethtool_regs *regs, void *_p); int mv88e6xxx_get_temp(struct dsa_switch *ds, int *temp); +int mv88e6xxx_phy_wait(struct dsa_switch *ds); +int mv88e6xxx_eeprom_load_wait(struct dsa_switch *ds); +int mv88e6xxx_eeprom_busy_wait(struct dsa_switch *ds); +int mv88e6xxx_phy_read_indirect(struct dsa_switch *ds, int addr, int regnum); +int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum, + u16 val); extern struct dsa_switch_driver mv88e6131_switch_driver; extern struct dsa_switch_driver mv88e6123_61_65_switch_driver; -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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