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From:   Christian Marangi <ansuelsmth@gmail.com>
To:     Pavel Machek <pavel@ucw.cz>, Lee Jones <lee@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Andrew Lunn <andrew@lunn.ch>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Vladimir Oltean <olteanv@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        Gregory Clement <gregory.clement@bootlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
        Andy Gross <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio <konrad.dybcio@linaro.org>,
        Christian Marangi <ansuelsmth@gmail.com>,
        John Crispin <john@phrozen.org>, linux-leds@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-arm-msm@vger.kernel.org
Cc:     Michal Kubiak <michal.kubiak@intel.com>
Subject: [net-next PATCH v6 08/16] net: phy: phy_device: Call into the PHY driver to set LED blinking
Date:   Mon, 27 Mar 2023 16:10:23 +0200
Message-Id: <20230327141031.11904-9-ansuelsmth@gmail.com>
In-Reply-To: <20230327141031.11904-1-ansuelsmth@gmail.com>
References: <20230327141031.11904-1-ansuelsmth@gmail.com>
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From: Andrew Lunn <andrew@lunn.ch>

Linux LEDs can be requested to perform hardware accelerated
blinking. Pass this to the PHY driver, if it implements the op.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
---
 drivers/net/phy/phy_device.c | 18 ++++++++++++++++++
 include/linux/phy.h          |  8 ++++++++
 2 files changed, 26 insertions(+)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 141d63ef3897..79a52dc3c50a 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -3005,6 +3005,22 @@ static int phy_led_set_brightness(struct led_classdev *led_cdev,
 	return err;
 }
 
+static int phy_led_blink_set(struct led_classdev *led_cdev,
+			     unsigned long *delay_on,
+			     unsigned long *delay_off)
+{
+	struct phy_led *phyled = to_phy_led(led_cdev);
+	struct phy_device *phydev = phyled->phydev;
+	int err;
+
+	mutex_lock(&phydev->lock);
+	err = phydev->drv->led_blink_set(phydev, phyled->index,
+					 delay_on, delay_off);
+	mutex_unlock(&phydev->lock);
+
+	return err;
+}
+
 static int of_phy_led(struct phy_device *phydev,
 		      struct device_node *led)
 {
@@ -3027,6 +3043,8 @@ static int of_phy_led(struct phy_device *phydev,
 
 	if (phydev->drv->led_brightness_set)
 		cdev->brightness_set_blocking = phy_led_set_brightness;
+	if (phydev->drv->led_blink_set)
+		cdev->blink_set = phy_led_blink_set;
 	cdev->max_brightness = 1;
 	init_data.devicename = dev_name(&phydev->mdio.dev);
 	init_data.fwnode = of_fwnode_handle(led);
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 2a5ee66b79b0..cad757d55ec9 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1083,6 +1083,14 @@ struct phy_driver {
 	 */
 	int (*led_brightness_set)(struct phy_device *dev,
 				  u32 index, enum led_brightness value);
+	/* Activate hardware accelerated blink, delays are in milliseconds
+	 * and if both are zero then a sensible default should be chosen.
+	 * The call should adjust the timings in that case and if it can't
+	 * match the values specified exactly.
+	 */
+	int (*led_blink_set)(struct phy_device *dev, u32 index,
+			     unsigned long *delay_on,
+			     unsigned long *delay_off);
 };
 #define to_phy_driver(d) container_of(to_mdio_common_driver(d),		\
 				      struct phy_driver, mdiodrv)
-- 
2.39.2