From dc18582211b34bce8250ddf3cac2a2230e192120 Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Wed, 17 May 2023 11:38:12 +0100 Subject: net: sfp: add support for setting signalling rate Add support to the SFP layer to allow phylink to set the signalling rate for a SFP module. The rate given will be in units of kilo-baud (1000 baud). Reviewed-by: Simon Horman Signed-off-by: Russell King (Oracle) Signed-off-by: Jakub Kicinski --- drivers/net/phy/sfp-bus.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/net/phy/sfp-bus.c') diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c index 9372e5a4cadc..e8dd47bffe43 100644 --- a/drivers/net/phy/sfp-bus.c +++ b/drivers/net/phy/sfp-bus.c @@ -575,6 +575,26 @@ static void sfp_upstream_clear(struct sfp_bus *bus) bus->upstream = NULL; } +/** + * sfp_upstream_set_signal_rate() - set data signalling rate + * @bus: a pointer to the &struct sfp_bus structure for the sfp module + * @rate_kbd: signalling rate in units of 1000 baud + * + * Configure the rate select settings on the SFP module for the signalling + * rate (not the same as the data rate). + * + * Locks that may be held: + * Phylink's state_mutex + * rtnl lock + * SFP's sm_mutex + */ +void sfp_upstream_set_signal_rate(struct sfp_bus *bus, unsigned int rate_kbd) +{ + if (bus->registered) + bus->socket_ops->set_signal_rate(bus->sfp, rate_kbd); +} +EXPORT_SYMBOL_GPL(sfp_upstream_set_signal_rate); + /** * sfp_bus_find_fwnode() - parse and locate the SFP bus from fwnode * @fwnode: firmware node for the parent device (MAC or PHY) -- cgit