e1000: add smart power down code
Smart Power Down is a power saving feature in newer e1000 hardware. We
disable it because it causes time to link to be long, but make it a
user choice.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
diff --git a/drivers/net/e1000/e1000_param.c b/drivers/net/e1000/e1000_param.c
index e55f896..a8d9295 100644
--- a/drivers/net/e1000/e1000_param.c
+++ b/drivers/net/e1000/e1000_param.c
@@ -183,6 +183,15 @@
E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
+/* Enable Smart Power Down of the PHY
+ *
+ * Valid Range: 0, 1
+ *
+ * Default Value: 0 (disabled)
+ */
+
+E1000_PARAM(SmartPowerDownEnable, "Enable PHY smart power down");
+
#define AUTONEG_ADV_DEFAULT 0x2F
#define AUTONEG_ADV_MASK 0x2F
#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
@@ -494,6 +503,22 @@
adapter->itr = opt.def;
}
}
+ { /* Smart Power Down */
+ struct e1000_option opt = {
+ .type = enable_option,
+ .name = "PHY Smart Power Down",
+ .err = "defaulting to Disabled",
+ .def = OPTION_DISABLED
+ };
+
+ if (num_SmartPowerDownEnable > bd) {
+ int spd = SmartPowerDownEnable[bd];
+ e1000_validate_option(&spd, &opt, adapter);
+ adapter->smart_power_down = spd;
+ } else {
+ adapter->smart_power_down = opt.def;
+ }
+ }
switch (adapter->hw.media_type) {
case e1000_media_type_fiber: