From patchwork Tue Jan 2 18:38:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 760360 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 74B0B16415; Tue, 2 Jan 2024 18:38:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="hl+zbLHj" Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-40d3c4bfe45so102786635e9.1; Tue, 02 Jan 2024 10:38:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1704220737; x=1704825537; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=fQabVWmpmoZU8yQyfqwraJ/6CaCvr56KIOoajwAPETc=; b=hl+zbLHjAdt/xFJiZWhtH4kvtjRmCkhOVIjV6I8ntQQY5Al31vNRPg1yx1/OfA1KoC lpKWOJg3Ph3/nswHqIpI/lgtXZjJL9Zf9Ruk0TYxyRSdAHbpvwmQ54091Zqp6WBHl9Iu z01jTOLQ/5gZVFGWPalxKq0bHSJ+YhNde4A80oJ88fPyfntUteddrFEpAK+NY36sE292 LiC6DeOPNti4Y/FQT3Oowo4aN6F0FbXM75Y7ZVGiihFRIwNqkwT/jqKIoezIDKhcUbxv d87xWaJyvwOlr3CArttjRiqnpVHsz1woRyEC/W4ahdBFovSm/VVsYSkCQzoMWFNBU2W4 rjxQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1704220737; x=1704825537; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=fQabVWmpmoZU8yQyfqwraJ/6CaCvr56KIOoajwAPETc=; b=DQ2/KnKP6jLoEjEmX9YDzXNXK23EK7FQw7Y95a61Vu83AQVEyqrCZjQaxFvowLEjs3 zFE38jHE3ZNMD4XQMvMQNthMd9qIsR7tZXxcYvzXG/pA8nzDYM1OeiimCBZn+Lcn/vWW /BBrnaT5h2PsFKoe8Z/aK8cykn62McGuggr399oDXhhrgz+NjZtxk2YWAxFW3Zq7KuUB wp30zvRdkCRdCohT948UgSsE/OR1QVbNHOh7Yo/RPUOVJyJKVi39FNYISzv2wd9IfIhn fzrnoPSA2/59o12CqS3GllJszGVVrd7F/sF2O0RGo+1IKPmCV+5qVUP9iHOnZH+eMEjI E42A== X-Gm-Message-State: AOJu0YxHmC0UhyvwKiYUHRCn0SWwAvaTrJ6rQ2vBC4mbc5QVsrHMbUzm 6WM8N+rmn274+KsRZBF6YQHqrQXxFFo= X-Google-Smtp-Source: AGHT+IGQC9+CQvDnBiBdOXBnI5j7MRwisqOyk1s/BOS7UyEMNf8U0uxdScgydq6ztUjR6kyzFqMFfw== X-Received: by 2002:a05:600c:2201:b0:40d:35c9:7b6b with SMTP id z1-20020a05600c220100b0040d35c97b6bmr5341006wml.234.1704220736651; Tue, 02 Jan 2024 10:38:56 -0800 (PST) Received: from localhost.localdomain (host-87-10-250-100.retail.telecomitalia.it. [87.10.250.100]) by smtp.googlemail.com with ESMTPSA id p15-20020a05600c468f00b0040d4e1393dcsm37963071wmo.20.2024.01.02.10.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Jan 2024 10:38:56 -0800 (PST) From: Christian Marangi To: Pavel Machek , Lee Jones , Rob Herring , Krzysztof Kozlowski , Conor Dooley , William Zhang , Anand Gore , Kursad Oney , Florian Fainelli , =?utf-8?b?UmFmYcWCIE1p?= =?utf-8?b?xYJlY2tp?= , Broadcom internal kernel review list , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Heiner Kallweit , Russell King , Jacek Anaszewski , =?utf-8?q?Fern=C3=A1ndez_Roj?= =?utf-8?q?as?= , Sven Schwermer , Christian Marangi , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org Subject: [net-next PATCH v6 3/5] net: phy: add support for PHY LEDs polarity modes Date: Tue, 2 Jan 2024 19:38:32 +0100 Message-ID: <20240102183835.5332-4-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240102183835.5332-1-ansuelsmth@gmail.com> References: <20240102183835.5332-1-ansuelsmth@gmail.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add support for PHY LEDs polarity modes. Some PHY require LED to be set to active low to be turned ON. Adds support for this by declaring active-low property in DT. PHY driver needs to declare .led_polarity_set() to configure LED polarity modes. Function will pass the index with the LED index and a bitmap with all the required modes to set. Current supported modes are: - active-low with the flag PHY_LED_ACTIVE_LOW. LED is set to active-low to turn it ON. - inactive-high-impedance with the flag PHY_LED_INACTIVE_HIGH_IMPEDANCE. LED is set to high impedance to turn it OFF. Signed-off-by: Christian Marangi --- Changes v5: - Rework to LED modes bitmap Changes v4: - Drop for global active-low - Rework to polarity option (for marvell10g series support) Changes v3: - Out of RFC Changes v2: - Add this patch drivers/net/phy/phy_device.c | 12 ++++++++++++ include/linux/phy.h | 22 ++++++++++++++++++++++ 2 files changed, 34 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 1e595762afea..437a1c6046ab 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -3152,6 +3152,7 @@ static int of_phy_led(struct phy_device *phydev, struct device *dev = &phydev->mdio.dev; struct led_init_data init_data = {}; struct led_classdev *cdev; + unsigned long modes = 0; struct phy_led *phyled; u32 index; int err; @@ -3169,6 +3170,17 @@ static int of_phy_led(struct phy_device *phydev, if (index > U8_MAX) return -EINVAL; + if (phydev->drv->led_polarity_set) { + if (of_property_read_bool(led, "active-low")) + set_bit(PHY_LED_ACTIVE_LOW, &modes); + if (of_property_read_bool(led, "inactive-high-impedance")) + set_bit(PHY_LED_INACTIVE_HIGH_IMPEDANCE, &modes); + + err = phydev->drv->led_polarity_set(phydev, index, modes); + if (err) + return err; + } + phyled->index = index; if (phydev->drv->led_brightness_set) cdev->brightness_set_blocking = phy_led_set_brightness; diff --git a/include/linux/phy.h b/include/linux/phy.h index ac22b8e28a85..da0a15a6d638 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -860,6 +860,15 @@ struct phy_plca_status { bool pst; }; +/* Modes for PHY LED configuration */ +enum phy_led_modes { + PHY_LED_ACTIVE_LOW = 0, + PHY_LED_INACTIVE_HIGH_IMPEDANCE = 1, + + /* keep it last */ + __PHY_LED_MODES_NUM, +}; + /** * struct phy_led: An LED driven by the PHY * @@ -1153,6 +1162,19 @@ struct phy_driver { int (*led_hw_control_get)(struct phy_device *dev, u8 index, unsigned long *rules); + /** + * @led_polarity_set: Set the LED polarity if active low + * @dev: PHY device which has the LED + * @index: Which LED of the PHY device or -1 + * @modes: bitmap of LED polarity modes + * + * Configure LED with all the required polarity modes in @modes + * to make it correctly turn ON or OFF. + * + * Returns 0, or an error code. + */ + int (*led_polarity_set)(struct phy_device *dev, int index, + unsigned long modes); }; #define to_phy_driver(d) container_of(to_mdio_common_driver(d), \ struct phy_driver, mdiodrv)