diff options
author | Arun Ramadoss <arun.ramadoss@microchip.com> | 2022-06-17 11:42:46 +0300 |
---|---|---|
committer | Paolo Abeni <pabeni@redhat.com> | 2022-06-21 16:26:44 +0300 |
commit | 91a98917a8839923d404a77c21646ca5fc9e330a (patch) | |
tree | 924903e73a157de45f086967859992663e1759a3 /drivers | |
parent | 27faa0aa85f6696d411bbbebaed9f0f723c2a175 (diff) | |
download | linux-91a98917a8839923d404a77c21646ca5fc9e330a.tar.xz |
net: dsa: microchip: move switch chip_id detection to ksz_common
KSZ87xx and KSZ88xx have chip_id representation at reg location 0. And
KSZ9477 compatible switch and LAN937x switch have same chip_id detection
at location 0x01 and 0x02. To have the common switch detect
functionality for ksz switches, ksz_switch_detect function is
introduced.
Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/dsa/microchip/ksz8795.c | 48 | ||||
-rw-r--r-- | drivers/net/dsa/microchip/ksz8795_reg.h | 16 | ||||
-rw-r--r-- | drivers/net/dsa/microchip/ksz9477.c | 21 | ||||
-rw-r--r-- | drivers/net/dsa/microchip/ksz9477_reg.h | 1 | ||||
-rw-r--r-- | drivers/net/dsa/microchip/ksz_common.c | 78 | ||||
-rw-r--r-- | drivers/net/dsa/microchip/ksz_common.h | 19 |
6 files changed, 93 insertions, 90 deletions
diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c index 12a599d5e61a..3cc51ee5fb6c 100644 --- a/drivers/net/dsa/microchip/ksz8795.c +++ b/drivers/net/dsa/microchip/ksz8795.c @@ -1272,7 +1272,7 @@ static void ksz8_config_cpu_port(struct dsa_switch *ds) continue; if (!ksz_is_ksz88x3(dev)) { ksz_pread8(dev, i, regs[P_REMOTE_STATUS], &remote); - if (remote & PORT_FIBER_MODE) + if (remote & KSZ8_PORT_FIBER_MODE) p->fiber = 1; } if (p->fiber) @@ -1424,51 +1424,6 @@ static u32 ksz8_get_port_addr(int port, int offset) return PORT_CTRL_ADDR(port, offset); } -static int ksz8_switch_detect(struct ksz_device *dev) -{ - u8 id1, id2; - u16 id16; - int ret; - - /* read chip id */ - ret = ksz_read16(dev, REG_CHIP_ID0, &id16); - if (ret) - return ret; - - id1 = id16 >> 8; - id2 = id16 & SW_CHIP_ID_M; - - switch (id1) { - case KSZ87_FAMILY_ID: - if ((id2 != CHIP_ID_94 && id2 != CHIP_ID_95)) - return -ENODEV; - - if (id2 == CHIP_ID_95) { - u8 val; - - id2 = 0x95; - ksz_read8(dev, REG_PORT_STATUS_0, &val); - if (val & PORT_FIBER_MODE) - id2 = 0x65; - } else if (id2 == CHIP_ID_94) { - id2 = 0x94; - } - break; - case KSZ88_FAMILY_ID: - if (id2 != CHIP_ID_63) - return -ENODEV; - break; - default: - dev_err(dev->dev, "invalid family id: %d\n", id1); - return -ENODEV; - } - id16 &= ~0xff; - id16 |= id2; - dev->chip_id = id16; - - return 0; -} - static int ksz8_switch_init(struct ksz_device *dev) { struct ksz8 *ksz8 = dev->priv; @@ -1522,7 +1477,6 @@ static const struct ksz_dev_ops ksz8_dev_ops = { .freeze_mib = ksz8_freeze_mib, .port_init_cnt = ksz8_port_init_cnt, .shutdown = ksz8_reset_switch, - .detect = ksz8_switch_detect, .init = ksz8_switch_init, .exit = ksz8_switch_exit, }; diff --git a/drivers/net/dsa/microchip/ksz8795_reg.h b/drivers/net/dsa/microchip/ksz8795_reg.h index 4109433b6b6c..b8f6ad7581bc 100644 --- a/drivers/net/dsa/microchip/ksz8795_reg.h +++ b/drivers/net/dsa/microchip/ksz8795_reg.h @@ -14,23 +14,10 @@ #define KS_PRIO_M 0x3 #define KS_PRIO_S 2 -#define REG_CHIP_ID0 0x00 - -#define KSZ87_FAMILY_ID 0x87 -#define KSZ88_FAMILY_ID 0x88 - -#define REG_CHIP_ID1 0x01 - -#define SW_CHIP_ID_M 0xF0 -#define SW_CHIP_ID_S 4 #define SW_REVISION_M 0x0E #define SW_REVISION_S 1 #define SW_START 0x01 -#define CHIP_ID_94 0x60 -#define CHIP_ID_95 0x90 -#define CHIP_ID_63 0x30 - #define KSZ8863_REG_SW_RESET 0x43 #define KSZ8863_GLOBAL_SOFTWARE_RESET BIT(4) @@ -217,8 +204,6 @@ #define REG_PORT_4_STATUS_0 0x48 /* For KSZ8765. */ -#define PORT_FIBER_MODE BIT(7) - #define PORT_REMOTE_ASYM_PAUSE BIT(5) #define PORT_REMOTE_SYM_PAUSE BIT(4) #define PORT_REMOTE_100BTX_FD BIT(3) @@ -322,7 +307,6 @@ #define REG_PORT_CTRL_5 0x05 -#define REG_PORT_STATUS_0 0x08 #define REG_PORT_STATUS_1 0x09 #define REG_PORT_LINK_MD_CTRL 0x0A #define REG_PORT_LINK_MD_RESULT 0x0B diff --git a/drivers/net/dsa/microchip/ksz9477.c b/drivers/net/dsa/microchip/ksz9477.c index 7afc06681c02..7d3c8f6908b6 100644 --- a/drivers/net/dsa/microchip/ksz9477.c +++ b/drivers/net/dsa/microchip/ksz9477.c @@ -1360,23 +1360,6 @@ static u32 ksz9477_get_port_addr(int port, int offset) return PORT_CTRL_ADDR(port, offset); } -static int ksz9477_switch_detect(struct ksz_device *dev) -{ - u32 id32; - int ret; - - /* read chip id */ - ret = ksz_read32(dev, REG_CHIP_ID0__1, &id32); - if (ret) - return ret; - - dev_dbg(dev->dev, "Switch detect: ID=%08x\n", id32); - - dev->chip_id = id32 & 0x00FFFF00; - - return 0; -} - static int ksz9477_switch_init(struct ksz_device *dev) { u8 data8; @@ -1407,8 +1390,6 @@ static int ksz9477_switch_init(struct ksz_device *dev) dev->features = GBIT_SUPPORT; if (dev->chip_id == KSZ9893_CHIP_ID) { - /* Chip is from KSZ9893 design. */ - dev_info(dev->dev, "Found KSZ9893\n"); dev->features |= IS_9893; /* Chip does not support gigabit. */ @@ -1416,7 +1397,6 @@ static int ksz9477_switch_init(struct ksz_device *dev) dev->features &= ~GBIT_SUPPORT; dev->phy_port_cnt = 2; } else { - dev_info(dev->dev, "Found KSZ9477 or compatible\n"); /* Chip uses new XMII register definitions. */ dev->features |= NEW_XMII; @@ -1443,7 +1423,6 @@ static const struct ksz_dev_ops ksz9477_dev_ops = { .freeze_mib = ksz9477_freeze_mib, .port_init_cnt = ksz9477_port_init_cnt, .shutdown = ksz9477_reset_switch, - .detect = ksz9477_switch_detect, .init = ksz9477_switch_init, .exit = ksz9477_switch_exit, }; diff --git a/drivers/net/dsa/microchip/ksz9477_reg.h b/drivers/net/dsa/microchip/ksz9477_reg.h index 7a2c8d4767af..077e35ab11b5 100644 --- a/drivers/net/dsa/microchip/ksz9477_reg.h +++ b/drivers/net/dsa/microchip/ksz9477_reg.h @@ -25,7 +25,6 @@ #define REG_CHIP_ID2__1 0x0002 -#define CHIP_ID_63 0x63 #define CHIP_ID_66 0x66 #define CHIP_ID_67 0x67 #define CHIP_ID_77 0x77 diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 9ca8c8d7740f..bb710e5daff6 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -930,6 +930,72 @@ void ksz_port_stp_state_set(struct dsa_switch *ds, int port, } EXPORT_SYMBOL_GPL(ksz_port_stp_state_set); +static int ksz_switch_detect(struct ksz_device *dev) +{ + u8 id1, id2; + u16 id16; + u32 id32; + int ret; + + /* read chip id */ + ret = ksz_read16(dev, REG_CHIP_ID0, &id16); + if (ret) + return ret; + + id1 = FIELD_GET(SW_FAMILY_ID_M, id16); + id2 = FIELD_GET(SW_CHIP_ID_M, id16); + + switch (id1) { + case KSZ87_FAMILY_ID: + if (id2 == KSZ87_CHIP_ID_95) { + u8 val; + + dev->chip_id = KSZ8795_CHIP_ID; + + ksz_read8(dev, KSZ8_PORT_STATUS_0, &val); + if (val & KSZ8_PORT_FIBER_MODE) + dev->chip_id = KSZ8765_CHIP_ID; + } else if (id2 == KSZ87_CHIP_ID_94) { + dev->chip_id = KSZ8794_CHIP_ID; + } else { + return -ENODEV; + } + break; + case KSZ88_FAMILY_ID: + if (id2 == KSZ88_CHIP_ID_63) + dev->chip_id = KSZ8830_CHIP_ID; + else + return -ENODEV; + break; + default: + ret = ksz_read32(dev, REG_CHIP_ID0, &id32); + if (ret) + return ret; + + dev->chip_rev = FIELD_GET(SW_REV_ID_M, id32); + id32 &= ~0xFF; + + switch (id32) { + case KSZ9477_CHIP_ID: + case KSZ9897_CHIP_ID: + case KSZ9893_CHIP_ID: + case KSZ9567_CHIP_ID: + case LAN9370_CHIP_ID: + case LAN9371_CHIP_ID: + case LAN9372_CHIP_ID: + case LAN9373_CHIP_ID: + case LAN9374_CHIP_ID: + dev->chip_id = id32; + break; + default: + dev_err(dev->dev, + "unsupported switch detected %x)\n", id32); + return -ENODEV; + } + } + return 0; +} + struct ksz_device *ksz_switch_alloc(struct device *base, void *priv) { struct dsa_switch *ds; @@ -986,10 +1052,9 @@ int ksz_switch_register(struct ksz_device *dev, mutex_init(&dev->alu_mutex); mutex_init(&dev->vlan_mutex); - dev->dev_ops = ops; - - if (dev->dev_ops->detect(dev)) - return -EINVAL; + ret = ksz_switch_detect(dev); + if (ret) + return ret; info = ksz_lookup_info(dev->chip_id); if (!info) @@ -998,10 +1063,15 @@ int ksz_switch_register(struct ksz_device *dev, /* Update the compatible info with the probed one */ dev->info = info; + dev_info(dev->dev, "found switch: %s, rev %i\n", + dev->info->dev_name, dev->chip_rev); + ret = ksz_check_device_id(dev); if (ret) return ret; + dev->dev_ops = ops; + ret = dev->dev_ops->init(dev); if (ret) return ret; diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index 8500eaedad67..e6bc5fb2b130 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -90,6 +90,7 @@ struct ksz_device { /* chip specific data */ u32 chip_id; + u8 chip_rev; int cpu_port; /* port connected to CPU */ int phy_port_cnt; phy_interface_t compat_interface; @@ -182,7 +183,6 @@ struct ksz_dev_ops { void (*freeze_mib)(struct ksz_device *dev, int port, bool freeze); 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); }; @@ -353,6 +353,23 @@ static inline void ksz_regmap_unlock(void *__mtx) #define PORT_RX_ENABLE BIT(1) #define PORT_LEARN_DISABLE BIT(0) +/* Switch ID Defines */ +#define REG_CHIP_ID0 0x00 + +#define SW_FAMILY_ID_M GENMASK(15, 8) +#define KSZ87_FAMILY_ID 0x87 +#define KSZ88_FAMILY_ID 0x88 + +#define KSZ8_PORT_STATUS_0 0x08 +#define KSZ8_PORT_FIBER_MODE BIT(7) + +#define SW_CHIP_ID_M GENMASK(7, 4) +#define KSZ87_CHIP_ID_94 0x6 +#define KSZ87_CHIP_ID_95 0x9 +#define KSZ88_CHIP_ID_63 0x3 + +#define SW_REV_ID_M GENMASK(7, 4) + /* Regmap tables generation */ #define KSZ_SPI_OP_RD 3 #define KSZ_SPI_OP_WR 2 |