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path: root/drivers/net/phy/broadcom.c
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Diffstat (limited to 'drivers/net/phy/broadcom.c')
-rw-r--r--drivers/net/phy/broadcom.c106
1 files changed, 104 insertions, 2 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 83aea5c5cd03..bb5104ae4610 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -392,10 +392,50 @@ static int bcm54xx_config_init(struct phy_device *phydev)
return 0;
}
+static int bcm54xx_iddq_set(struct phy_device *phydev, bool enable)
+{
+ int ret = 0;
+
+ if (!(phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND))
+ return ret;
+
+ ret = bcm_phy_read_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL);
+ if (ret < 0)
+ goto out;
+
+ if (enable)
+ ret |= BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP;
+ else
+ ret &= ~(BCM54XX_TOP_MISC_IDDQ_SR | BCM54XX_TOP_MISC_IDDQ_LP);
+
+ ret = bcm_phy_write_exp(phydev, BCM54XX_TOP_MISC_IDDQ_CTRL, ret);
+out:
+ return ret;
+}
+
+static int bcm54xx_suspend(struct phy_device *phydev)
+{
+ int ret;
+
+ /* We cannot use a read/modify/write here otherwise the PHY gets into
+ * a bad state where its LEDs keep flashing, thus defeating the purpose
+ * of low power mode.
+ */
+ ret = phy_write(phydev, MII_BMCR, BMCR_PDOWN);
+ if (ret < 0)
+ return ret;
+
+ return bcm54xx_iddq_set(phydev, true);
+}
+
static int bcm54xx_resume(struct phy_device *phydev)
{
int ret;
+ ret = bcm54xx_iddq_set(phydev, false);
+ if (ret < 0)
+ return ret;
+
/* Writes to register other than BMCR would be ignored
* unless we clear the PDOWN bit first
*/
@@ -408,6 +448,15 @@ static int bcm54xx_resume(struct phy_device *phydev)
*/
fsleep(40);
+ /* Issue a soft reset after clearing the power down bit
+ * and before doing any other configuration.
+ */
+ if (phydev->dev_flags & PHY_BRCM_IDDQ_SUSPEND) {
+ ret = genphy_soft_reset(phydev);
+ if (ret < 0)
+ return ret;
+ }
+
return bcm54xx_config_init(phydev);
}
@@ -702,6 +751,36 @@ static void bcm54xx_get_stats(struct phy_device *phydev,
bcm_phy_get_stats(phydev, priv->stats, stats, data);
}
+static void bcm54xx_link_change_notify(struct phy_device *phydev)
+{
+ u16 mask = MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE |
+ MII_BCM54XX_EXP_EXP08_FORCE_DAC_WAKE;
+ int ret;
+
+ if (phydev->state != PHY_RUNNING)
+ return;
+
+ /* Don't change the DAC wake settings if auto power down
+ * is not requested.
+ */
+ if (!(phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE))
+ return;
+
+ ret = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP08);
+ if (ret < 0)
+ return;
+
+ /* Enable/disable 10BaseT auto and forced early DAC wake depending
+ * on the negotiated speed, those settings should only be done
+ * for 10Mbits/sec.
+ */
+ if (phydev->speed == SPEED_10)
+ ret |= mask;
+ else
+ ret &= ~mask;
+ bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08, ret);
+}
+
static struct phy_driver broadcom_drivers[] = {
{
.phy_id = PHY_ID_BCM5411,
@@ -715,6 +794,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5421,
.phy_id_mask = 0xfffffff0,
@@ -727,6 +807,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54210E,
.phy_id_mask = 0xfffffff0,
@@ -739,6 +820,9 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
+ .suspend = bcm54xx_suspend,
+ .resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM5461,
.phy_id_mask = 0xfffffff0,
@@ -751,6 +835,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54612E,
.phy_id_mask = 0xfffffff0,
@@ -763,6 +848,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54616S,
.phy_id_mask = 0xfffffff0,
@@ -774,6 +860,7 @@ static struct phy_driver broadcom_drivers[] = {
.handle_interrupt = bcm_phy_handle_interrupt,
.read_status = bcm54616s_read_status,
.probe = bcm54616s_probe,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5464,
.phy_id_mask = 0xfffffff0,
@@ -788,6 +875,7 @@ static struct phy_driver broadcom_drivers[] = {
.handle_interrupt = bcm_phy_handle_interrupt,
.suspend = genphy_suspend,
.resume = genphy_resume,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5481,
.phy_id_mask = 0xfffffff0,
@@ -801,6 +889,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54810,
.phy_id_mask = 0xfffffff0,
@@ -814,8 +903,9 @@ static struct phy_driver broadcom_drivers[] = {
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
- .suspend = genphy_suspend,
+ .suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM54811,
.phy_id_mask = 0xfffffff0,
@@ -829,8 +919,9 @@ static struct phy_driver broadcom_drivers[] = {
.config_aneg = bcm5481_config_aneg,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
- .suspend = genphy_suspend,
+ .suspend = bcm54xx_suspend,
.resume = bcm54xx_resume,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM5482,
.phy_id_mask = 0xfffffff0,
@@ -843,6 +934,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM50610,
.phy_id_mask = 0xfffffff0,
@@ -855,6 +947,9 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
+ .suspend = bcm54xx_suspend,
+ .resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM50610M,
.phy_id_mask = 0xfffffff0,
@@ -867,6 +962,9 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
+ .suspend = bcm54xx_suspend,
+ .resume = bcm54xx_resume,
}, {
.phy_id = PHY_ID_BCM57780,
.phy_id_mask = 0xfffffff0,
@@ -879,6 +977,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCMAC131,
.phy_id_mask = 0xfffffff0,
@@ -905,6 +1004,7 @@ static struct phy_driver broadcom_drivers[] = {
.get_strings = bcm_phy_get_strings,
.get_stats = bcm54xx_get_stats,
.probe = bcm54xx_phy_probe,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM53125,
.phy_id_mask = 0xfffffff0,
@@ -918,6 +1018,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
}, {
.phy_id = PHY_ID_BCM89610,
.phy_id_mask = 0xfffffff0,
@@ -930,6 +1031,7 @@ static struct phy_driver broadcom_drivers[] = {
.config_init = bcm54xx_config_init,
.config_intr = bcm_phy_config_intr,
.handle_interrupt = bcm_phy_handle_interrupt,
+ .link_change_notify = bcm54xx_link_change_notify,
} };
module_phy_driver(broadcom_drivers);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 02:40:58 +0000