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Message-ID: <20240524205346.20960-2-ansuelsmth@gmail.com>
Date: Fri, 24 May 2024 22:53:44 +0200
From: Christian Marangi <ansuelsmth@...il.com>
To: Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Christian Marangi <ansuelsmth@...il.com>,
Daniel Golle <daniel@...rotopia.org>,
Robert Marko <robimarko@...il.com>,
"Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
Paweł Owoc <frut3k7@...il.com>,
linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Subject: [RFC PATCH net-next 2/2] net: phy: aquantia: add support for PHY LEDs
From: Daniel Golle <daniel@...rotopia.org>
Aquantia Ethernet PHYs got 3 LED output pins which are typically used
to indicate link status and activity.
Add a minimal LED controller driver supporting the most common uses
with the 'netdev' trigger as well as software-driven forced control of
the LEDs.
Signed-off-by: Daniel Golle <daniel@...rotopia.org>
[ rework indentation, fix checkpatch error and improve some functions ]
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
drivers/net/phy/aquantia/Makefile | 2 +-
drivers/net/phy/aquantia/aquantia.h | 40 ++++++
drivers/net/phy/aquantia/aquantia_leds.c | 150 +++++++++++++++++++++++
drivers/net/phy/aquantia/aquantia_main.c | 63 +++++++++-
4 files changed, 252 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/phy/aquantia/aquantia_leds.c
diff --git a/drivers/net/phy/aquantia/Makefile b/drivers/net/phy/aquantia/Makefile
index aa77fb63c8ec..c6c4d494ee2a 100644
--- a/drivers/net/phy/aquantia/Makefile
+++ b/drivers/net/phy/aquantia/Makefile
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
-aquantia-objs += aquantia_main.o aquantia_firmware.o
+aquantia-objs += aquantia_main.o aquantia_firmware.o aquantia_leds.o
ifdef CONFIG_HWMON
aquantia-objs += aquantia_hwmon.o
endif
diff --git a/drivers/net/phy/aquantia/aquantia.h b/drivers/net/phy/aquantia/aquantia.h
index c79b33d95628..c0e1fd9d7152 100644
--- a/drivers/net/phy/aquantia/aquantia.h
+++ b/drivers/net/phy/aquantia/aquantia.h
@@ -63,6 +63,28 @@
#define VEND1_GLOBAL_CONTROL2_UP_RUN_STALL_OVD BIT(6)
#define VEND1_GLOBAL_CONTROL2_UP_RUN_STALL BIT(0)
+#define VEND1_GLOBAL_LED_PROV 0xc430
+#define AQR_LED_PROV(x) (VEND1_GLOBAL_LED_PROV + (x))
+#define VEND1_GLOBAL_LED_PROV_LINK2500 BIT(14)
+#define VEND1_GLOBAL_LED_PROV_LINK5000 BIT(15)
+#define VEND1_GLOBAL_LED_PROV_FORCE_ON BIT(8)
+#define VEND1_GLOBAL_LED_PROV_LINK10000 BIT(7)
+#define VEND1_GLOBAL_LED_PROV_LINK1000 BIT(6)
+#define VEND1_GLOBAL_LED_PROV_LINK100 BIT(5)
+#define VEND1_GLOBAL_LED_PROV_RX_ACT BIT(3)
+#define VEND1_GLOBAL_LED_PROV_TX_ACT BIT(2)
+#define VEND1_GLOBAL_LED_PROV_ACT_STRETCH GENMASK(0, 1)
+
+#define VEND1_GLOBAL_LED_PROV_LINK_MASK (VEND1_GLOBAL_LED_PROV_LINK100 | \
+ VEND1_GLOBAL_LED_PROV_LINK1000 | \
+ VEND1_GLOBAL_LED_PROV_LINK10000 | \
+ VEND1_GLOBAL_LED_PROV_LINK5000 | \
+ VEND1_GLOBAL_LED_PROV_LINK2500)
+
+#define VEND1_GLOBAL_LED_DRIVE 0xc438
+#define VEND1_GLOBAL_LED_DRIVE_VDD BIT(1)
+#define AQR_LED_DRIVE(x) (VEND1_GLOBAL_LED_DRIVE + (x))
+
#define VEND1_THERMAL_PROV_HIGH_TEMP_FAIL 0xc421
#define VEND1_THERMAL_PROV_LOW_TEMP_FAIL 0xc422
#define VEND1_THERMAL_PROV_HIGH_TEMP_WARN 0xc423
@@ -125,6 +147,8 @@
#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL2 BIT(1)
#define VEND1_GLOBAL_INT_VEND_MASK_GLOBAL3 BIT(0)
+#define AQR_MAX_LEDS 3
+
struct aqr107_hw_stat {
const char *name;
int reg;
@@ -149,6 +173,7 @@ static const struct aqr107_hw_stat aqr107_hw_stats[] = {
struct aqr107_priv {
u64 sgmii_stats[AQR107_SGMII_STAT_SZ];
+ unsigned long leds_active_low;
};
#if IS_REACHABLE(CONFIG_HWMON)
@@ -158,3 +183,18 @@ static inline int aqr_hwmon_probe(struct phy_device *phydev) { return 0; }
#endif
int aqr_firmware_load(struct phy_device *phydev);
+
+int aqr_phy_led_blink_set(struct phy_device *phydev, u8 index,
+ unsigned long *delay_on,
+ unsigned long *delay_off);
+int aqr_phy_led_brightness_set(struct phy_device *phydev,
+ u8 index, enum led_brightness value);
+int aqr_phy_led_hw_is_supported(struct phy_device *phydev, u8 index,
+ unsigned long rules);
+int aqr_phy_led_hw_control_get(struct phy_device *phydev, u8 index,
+ unsigned long *rules);
+int aqr_phy_led_hw_control_set(struct phy_device *phydev, u8 index,
+ unsigned long rules);
+int aqr_phy_led_active_low_set(struct phy_device *phydev, int index, bool enable);
+int aqr_phy_led_polarity_set(struct phy_device *phydev, int index,
+ unsigned long modes);
diff --git a/drivers/net/phy/aquantia/aquantia_leds.c b/drivers/net/phy/aquantia/aquantia_leds.c
new file mode 100644
index 000000000000..47bcc6d70945
--- /dev/null
+++ b/drivers/net/phy/aquantia/aquantia_leds.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0
+/* LED driver for Aquantia PHY
+ *
+ * Author: Daniel Golle <daniel@...rotopia.org>
+ */
+
+#include <linux/phy.h>
+
+#include "aquantia.h"
+
+int aqr_phy_led_brightness_set(struct phy_device *phydev,
+ u8 index, enum led_brightness value)
+{
+ if (index > 2)
+ return -EINVAL;
+
+ return phy_modify_mmd(phydev, MDIO_MMD_VEND1, AQR_LED_PROV(index),
+ VEND1_GLOBAL_LED_PROV_LINK_MASK |
+ VEND1_GLOBAL_LED_PROV_FORCE_ON |
+ VEND1_GLOBAL_LED_PROV_RX_ACT |
+ VEND1_GLOBAL_LED_PROV_TX_ACT,
+ value ? VEND1_GLOBAL_LED_PROV_FORCE_ON : 0);
+}
+
+static const unsigned long supported_triggers = (BIT(TRIGGER_NETDEV_LINK) |
+ BIT(TRIGGER_NETDEV_LINK_100) |
+ BIT(TRIGGER_NETDEV_LINK_1000) |
+ BIT(TRIGGER_NETDEV_LINK_2500) |
+ BIT(TRIGGER_NETDEV_LINK_5000) |
+ BIT(TRIGGER_NETDEV_LINK_10000) |
+ BIT(TRIGGER_NETDEV_RX) |
+ BIT(TRIGGER_NETDEV_TX));
+
+int aqr_phy_led_hw_is_supported(struct phy_device *phydev, u8 index,
+ unsigned long rules)
+{
+ if (index >= AQR_MAX_LEDS)
+ return -EINVAL;
+
+ /* All combinations of the supported triggers are allowed */
+ if (rules & ~supported_triggers)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+int aqr_phy_led_hw_control_get(struct phy_device *phydev, u8 index,
+ unsigned long *rules)
+{
+ int val;
+
+ if (index >= AQR_MAX_LEDS)
+ return -EINVAL;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_VEND1, AQR_LED_PROV(index));
+ if (val < 0)
+ return val;
+
+ *rules = 0;
+ if (val & VEND1_GLOBAL_LED_PROV_LINK100)
+ *rules |= BIT(TRIGGER_NETDEV_LINK_100);
+
+ if (val & VEND1_GLOBAL_LED_PROV_LINK1000)
+ *rules |= BIT(TRIGGER_NETDEV_LINK_1000);
+
+ if (val & VEND1_GLOBAL_LED_PROV_LINK2500)
+ *rules |= BIT(TRIGGER_NETDEV_LINK_2500);
+
+ if (val & VEND1_GLOBAL_LED_PROV_LINK5000)
+ *rules |= BIT(TRIGGER_NETDEV_LINK_5000);
+
+ if (val & VEND1_GLOBAL_LED_PROV_LINK10000)
+ *rules |= BIT(TRIGGER_NETDEV_LINK_10000);
+
+ if (val & VEND1_GLOBAL_LED_PROV_RX_ACT)
+ *rules |= BIT(TRIGGER_NETDEV_RX);
+
+ if (val & VEND1_GLOBAL_LED_PROV_TX_ACT)
+ *rules |= BIT(TRIGGER_NETDEV_TX);
+
+ return 0;
+}
+
+int aqr_phy_led_hw_control_set(struct phy_device *phydev, u8 index,
+ unsigned long rules)
+{
+ u16 val = 0;
+
+ if (index >= AQR_MAX_LEDS)
+ return -EINVAL;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_100) | BIT(TRIGGER_NETDEV_LINK)))
+ val |= VEND1_GLOBAL_LED_PROV_LINK100;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_1000) | BIT(TRIGGER_NETDEV_LINK)))
+ val |= VEND1_GLOBAL_LED_PROV_LINK1000;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_2500) | BIT(TRIGGER_NETDEV_LINK)))
+ val |= VEND1_GLOBAL_LED_PROV_LINK2500;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_5000) | BIT(TRIGGER_NETDEV_LINK)))
+ val |= VEND1_GLOBAL_LED_PROV_LINK5000;
+
+ if (rules & (BIT(TRIGGER_NETDEV_LINK_10000) | BIT(TRIGGER_NETDEV_LINK)))
+ val |= VEND1_GLOBAL_LED_PROV_LINK10000;
+
+ if (rules & BIT(TRIGGER_NETDEV_RX))
+ val |= VEND1_GLOBAL_LED_PROV_RX_ACT;
+
+ if (rules & BIT(TRIGGER_NETDEV_TX))
+ val |= VEND1_GLOBAL_LED_PROV_TX_ACT;
+
+ return phy_modify_mmd(phydev, MDIO_MMD_VEND1, AQR_LED_PROV(index),
+ VEND1_GLOBAL_LED_PROV_LINK_MASK |
+ VEND1_GLOBAL_LED_PROV_FORCE_ON |
+ VEND1_GLOBAL_LED_PROV_RX_ACT |
+ VEND1_GLOBAL_LED_PROV_TX_ACT, val);
+}
+
+int aqr_phy_led_active_low_set(struct phy_device *phydev, int index, bool enable)
+{
+ return phy_modify_mmd(phydev, MDIO_MMD_VEND1, AQR_LED_DRIVE(index),
+ VEND1_GLOBAL_LED_DRIVE_VDD, enable);
+}
+
+int aqr_phy_led_polarity_set(struct phy_device *phydev, int index, unsigned long modes)
+{
+ struct aqr107_priv *priv = phydev->priv;
+ bool active_low = false;
+ u32 mode;
+
+ if (index >= AQR_MAX_LEDS)
+ return -EINVAL;
+
+ for_each_set_bit(mode, &modes, __PHY_LED_MODES_NUM) {
+ switch (mode) {
+ case PHY_LED_ACTIVE_LOW:
+ active_low = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ /* Save LED driver vdd state to restore on SW reset */
+ if (active_low)
+ priv->leds_active_low |= BIT(index);
+
+ return aqr_phy_led_active_low_set(phydev, index, active_low);
+}
diff --git a/drivers/net/phy/aquantia/aquantia_main.c b/drivers/net/phy/aquantia/aquantia_main.c
index 252123d12efb..6c14355744b7 100644
--- a/drivers/net/phy/aquantia/aquantia_main.c
+++ b/drivers/net/phy/aquantia/aquantia_main.c
@@ -475,7 +475,9 @@ static void aqr107_chip_info(struct phy_device *phydev)
static int aqr107_config_init(struct phy_device *phydev)
{
- int ret;
+ struct aqr107_priv *priv = phydev->priv;
+ u32 led_active_low;
+ int ret, index = 0;
/* Check that the PHY interface type is compatible */
if (phydev->interface != PHY_INTERFACE_MODE_SGMII &&
@@ -496,7 +498,19 @@ static int aqr107_config_init(struct phy_device *phydev)
if (!ret)
aqr107_chip_info(phydev);
- return aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
+ ret = aqr107_set_downshift(phydev, MDIO_AN_VEND_PROV_DOWNSHIFT_DFLT);
+ if (ret)
+ return ret;
+
+ /* Restore LED polarity state after reset */
+ for_each_set_bit(led_active_low, &priv->leds_active_low, AQR_MAX_LEDS) {
+ ret = aqr_phy_led_active_low_set(phydev, index, led_active_low);
+ if (ret)
+ return ret;
+ index++;
+ }
+
+ return 0;
}
static int aqcs109_config_init(struct phy_device *phydev)
@@ -786,6 +800,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQCS109),
@@ -805,6 +824,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR111),
@@ -824,6 +848,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR111B0),
@@ -843,6 +872,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR405),
@@ -869,6 +903,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR412),
@@ -906,6 +945,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR113C),
@@ -925,6 +969,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR114C),
@@ -944,6 +993,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
{
PHY_ID_MATCH_MODEL(PHY_ID_AQR813),
@@ -963,6 +1017,11 @@ static struct phy_driver aqr_driver[] = {
.get_strings = aqr107_get_strings,
.get_stats = aqr107_get_stats,
.link_change_notify = aqr107_link_change_notify,
+ .led_brightness_set = aqr_phy_led_brightness_set,
+ .led_hw_is_supported = aqr_phy_led_hw_is_supported,
+ .led_hw_control_set = aqr_phy_led_hw_control_set,
+ .led_hw_control_get = aqr_phy_led_hw_control_get,
+ .led_polarity_set = aqr_phy_led_polarity_set,
},
};
--
2.43.0
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