From 79e2a6a04a2159c81dd08a2ba538edbe158e8a4e Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 8 Dec 2016 10:06:26 +0100 Subject: [PATCH] common: miiphyutil: Add helper function for mdio bus name The most of ethernet drivers are using this mdio registration sequence. strcpy(priv->bus->name, "emac"); mdio_register(priv->bus); Where driver can be used only with one MDIO bus because only unique name should be used. Other drivers are using unique device name for MDIO registration to support multiple instances. snprintf(priv->bus->name, sizeof(bus->name), "%s", name); With DM dev->seq is used more even in logs (like random MAC address generation: printf("\nWarning: %s (eth%d) using random MAC address - %pM\n", dev->name, dev->seq, pdata->enetaddr); ) where eth%d prefix is used. Simplify driver code to register mdio device with dev->seq number to simplify mdio registration and reduce code duplication across all drivers. With DM_SEQ_ALIAS enabled dev->seq reflects alias setting. Signed-off-by: Michal Simek Acked-by: Joe Hershberger Reviewed-by: Simon Glass --- common/miiphyutil.c | 12 ++++++++++++ include/miiphy.h | 9 +++++++++ 2 files changed, 21 insertions(+) diff --git a/common/miiphyutil.c b/common/miiphyutil.c index aca18db52a..8eb0f761bb 100644 --- a/common/miiphyutil.c +++ b/common/miiphyutil.c @@ -107,6 +107,18 @@ int mdio_register(struct mii_dev *bus) return 0; } +int mdio_register_seq(struct mii_dev *bus, int seq) +{ + int ret; + + /* Setup a unique name for each mdio bus */ + ret = snprintf(bus->name, MDIO_NAME_LEN, "eth%d", seq); + if (ret < 0) + return ret; + + return mdio_register(bus); +} + int mdio_unregister(struct mii_dev *bus) { if (!bus) diff --git a/include/miiphy.h b/include/miiphy.h index 83141b4a6a..fe8928a3a9 100644 --- a/include/miiphy.h +++ b/include/miiphy.h @@ -48,6 +48,15 @@ void miiphy_listdev(void); struct mii_dev *mdio_alloc(void); void mdio_free(struct mii_dev *bus); int mdio_register(struct mii_dev *bus); + +/** + * mdio_register_seq - Register mdio bus with sequence number + * @bus: mii device structure + * @seq: sequence number + * + * Return: 0 if success, negative value if error + */ +int mdio_register_seq(struct mii_dev *bus, int seq); int mdio_unregister(struct mii_dev *bus); void mdio_list_devices(void); -- 2.39.5