diff options
| author | Igor Russkikh <irusskikh@marvell.com> | 2020-10-05 18:39:39 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-06 16:16:01 +0300 |
| commit | 60db5e408e432d57f93e1eaec8fc9d7a05caa1f9 (patch) | |
| tree | 6464701adb7436481e0df986de6f52897d31e352 /drivers/net/ethernet/aquantia/atlantic/aq_nic.c | |
| parent | e193c3ab8302908b1378fc0606be561e976d2532 (diff) | |
| download | linux-60db5e408e432d57f93e1eaec8fc9d7a05caa1f9.tar.xz | |
net: atlantic: implement media detect feature via phy tunables
Mediadetect is another name for the EDPD (energy detect power down).
This feature allows device to save extra power when no link is available.
PHY goes into the extreme power saving mode and only periodically wakes up
and checks for the link.
AQC devices has fixed check period of 6 seconds
The feature may increase linkup time.
Signed-off-by: Igor Russkikh <irusskikh@marvell.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/aquantia/atlantic/aq_nic.c')
| -rw-r--r-- | drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c index 088aa3c3d19c..0f865daeb36d 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c @@ -407,6 +407,8 @@ int aq_nic_init(struct aq_nic_s *self) goto err_exit; /* Restore default settings */ aq_nic_set_downshift(self, self->aq_nic_cfg.downshift_counter); + aq_nic_set_media_detect(self, self->aq_nic_cfg.is_media_detect ? + AQ_HW_MEDIA_DETECT_CNT : 0); err = self->aq_hw_ops->hw_init(self->aq_hw, aq_nic_get_ndev(self)->dev_addr); @@ -1421,6 +1423,31 @@ int aq_nic_set_downshift(struct aq_nic_s *self, int val) return err; } +int aq_nic_set_media_detect(struct aq_nic_s *self, int val) +{ + struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; + int err = 0; + + if (!self->aq_fw_ops->set_media_detect) + return -EOPNOTSUPP; + + if (val > 0 && val != AQ_HW_MEDIA_DETECT_CNT) { + netdev_err(self->ndev, "EDPD on this device could have only fixed value of %d\n", + AQ_HW_MEDIA_DETECT_CNT); + return -EINVAL; + } + + mutex_lock(&self->fwreq_mutex); + err = self->aq_fw_ops->set_media_detect(self->aq_hw, !!val); + mutex_unlock(&self->fwreq_mutex); + + /* msecs plays no role - configuration is always fixed in PHY */ + if (!err) + cfg->is_media_detect = !!val; + + return err; +} + int aq_nic_setup_tc_mqprio(struct aq_nic_s *self, u32 tcs, u8 *prio_tc_map) { struct aq_nic_cfg_s *cfg = &self->aq_nic_cfg; |