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net: sfp: soft status and control support

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Add support for the soft status and control register, which allows
TX_FAULT and RX_LOS to be monitored and TX_DISABLE to be set.  We
make use of this when the board does not support GPIOs for these
signals.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King
2019-11-20 12:29:59 +00:00
committed by David S. Miller
parent 9ce33351bd
commit f3c9a666b2
2 changed files with 96 additions and 22 deletions
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4
include/linux/sfp.h
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@@ -428,6 +428,10 @@ enum {
SFP_TEC_CUR = 0x6c,
SFP_STATUS = 0x6e,
SFP_STATUS_TX_DISABLE = BIT(7),
SFP_STATUS_TX_DISABLE_FORCE = BIT(6),
SFP_STATUS_TX_FAULT = BIT(2),
SFP_STATUS_RX_LOS = BIT(1),
SFP_ALARM0 = 0x70,
SFP_ALARM0_TEMP_HIGH = BIT(7),
SFP_ALARM0_TEMP_LOW = BIT(6),