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net: dsa: microchip: move switch chip_id detection to ksz_common

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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>
This commit is contained in:
Arun Ramadoss
2022-06-17 14:12:46 +05:30
committed by Paolo Abeni
parent 27faa0aa85
commit 91a98917a8
6 changed files with 93 additions and 90 deletions
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19
drivers/net/dsa/microchip/ksz_common.h
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@ -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