sfc: Use lm87 and lm90 drivers for board temperature/power monitoring

Add board monitoring to periodic work whenever link is down.
For SFE4001, report when a fault has caused the PHY to turn off.
For SFE4002, switch XFP PHY into low-power state in case of a fault.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/sfc/mdio_10g.h b/drivers/net/sfc/mdio_10g.h
index 19c42eaf7fb4..db9f358349c6 100644
--- a/drivers/net/sfc/mdio_10g.h
+++ b/drivers/net/sfc/mdio_10g.h
@@ -54,6 +54,9 @@
 /* Loopback bit for WIS, PCS, PHYSX and DTEXS */
 #define MDIO_MMDREG_CTRL1_LBACK_LBN     (14)
 #define MDIO_MMDREG_CTRL1_LBACK_WIDTH   (1)
+/* Low power */
+#define MDIO_MMDREG_CTRL1_LPOWER_LBN    (11)
+#define MDIO_MMDREG_CTRL1_LPOWER_WIDTH  (1)
 
 /* Bits in MMDREG_STAT1 */
 #define MDIO_MMDREG_STAT1_FAULT_LBN     (7)
@@ -240,6 +243,10 @@ extern void mdio_clause45_transmit_disable(struct efx_nic *efx);
 /* Generic part of reconfigure: set/clear loopback bits */
 extern void mdio_clause45_phy_reconfigure(struct efx_nic *efx);
 
+/* Set the power state of the specified MMDs */
+extern void mdio_clause45_set_mmds_lpower(struct efx_nic *efx,
+                                          int low_power, unsigned int mmd_mask);
+
 /* Read (some of) the PHY settings over MDIO */
 extern void mdio_clause45_get_settings(struct efx_nic *efx,
                                        struct ethtool_cmd *ecmd);