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Thu, 06 Mar 2025 03:16:00 -0800 (PST) Received: from localhost ([2001:4091:a245:8327:80ad:8144:3b07:4679]) by smtp.gmail.com with UTF8SMTPSA id a640c23a62f3a-ac239485558sm79821566b.60.2025.03.06.03.16.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Mar 2025 03:16:00 -0800 (PST) From: Markus Schneider-Pargmann Date: Thu, 06 Mar 2025 12:14:42 +0100 Subject: [PATCH v5 04/13] can: m_can: Map WoL to device_set_wakeup_enable MIME-Version: 1.0 Message-Id: <20250306-topic-am62-partialio-v6-12-b4-v5-4-f9323d3744a2@baylibre.com> References: <20250306-topic-am62-partialio-v6-12-b4-v5-0-f9323d3744a2@baylibre.com> In-Reply-To: <20250306-topic-am62-partialio-v6-12-b4-v5-0-f9323d3744a2@baylibre.com> To: Nishanth Menon , Tero Kristo , Santosh Shilimkar , Vignesh Raghavendra , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Anand Gadiyar , Chandrasekar Ramakrishnan , Marc Kleine-Budde , Vincent Mailhol Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Vishal Mahaveer , Kevin Hilman , Dhruva Gole , Akashdeep Kaur , Kendall Willis , linux-can@vger.kernel.org, Markus Schneider-Pargmann X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2839; i=msp@baylibre.com; h=from:subject:message-id; bh=J4VG8tXwefIVHGZH1+PCdV86BOTtS1uR46bTjNwL+bw=; b=owGbwMvMwCGm0rPl0RXRdfaMp9WSGNJPNu9es/H//VpZJaPYRWYtm6pvLfN5U8DyZPfjnamJi kwXfdVdO0pZGMQ4GGTFFFnuflj4rk7u+oKIdY8cYeawMoEMYeDiFICJnDnCyPDv/MklPmWTlJpC /kmkOvke767d7HFGblvMdNnQjNc1YQqMDLfnsSu2abnr9t7jt/MxEJv0a8XSqHuHuw1Pzvr7z7Z qNRsA X-Developer-Key: i=msp@baylibre.com; a=openpgp; fpr=BADD88DB889FDC3E8A3D5FE612FA6A01E0A45B41 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_031602_782247_EDE7196E X-CRM114-Status: GOOD ( 16.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org In some devices the pins of the m_can module can act as a wakeup source. This patch helps do that by connecting the PHY_WAKE WoL option to device_set_wakeup_enable. By marking this device as being wakeup enabled, this setting can be used by platform code to decide which sleep or poweroff mode to use. Also this prepares the driver for the next patch in which the pinctrl settings are changed depending on the desired wakeup source. Reviewed-by: Vincent Mailhol Signed-off-by: Markus Schneider-Pargmann --- drivers/net/can/m_can/m_can.c | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index 884a6352c42b7bc372c55a6be19ca9fcb15d3d63..20f7533ad9e7735013ff000e6f3b11d016f8a09f 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -2222,6 +2222,36 @@ static int m_can_set_coalesce(struct net_device *dev, return 0; } +static void m_can_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct m_can_classdev *cdev = netdev_priv(dev); + + wol->supported = device_can_wakeup(cdev->dev) ? WAKE_PHY : 0; + wol->wolopts = device_may_wakeup(cdev->dev) ? WAKE_PHY : 0; +} + +static int m_can_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) +{ + struct m_can_classdev *cdev = netdev_priv(dev); + bool wol_enable = !!(wol->wolopts & WAKE_PHY); + int ret; + + if (wol->wolopts & ~WAKE_PHY) + return -EINVAL; + + if (wol_enable == device_may_wakeup(cdev->dev)) + return 0; + + ret = device_set_wakeup_enable(cdev->dev, wol_enable); + if (ret) { + netdev_err(cdev->net, "Failed to set wakeup enable %pE\n", + ERR_PTR(ret)); + return ret; + } + + return 0; +} + static const struct ethtool_ops m_can_ethtool_ops_coalescing = { .supported_coalesce_params = ETHTOOL_COALESCE_RX_USECS_IRQ | ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ | @@ -2231,10 +2261,14 @@ static const struct ethtool_ops m_can_ethtool_ops_coalescing = { .get_ts_info = ethtool_op_get_ts_info, .get_coalesce = m_can_get_coalesce, .set_coalesce = m_can_set_coalesce, + .get_wol = m_can_get_wol, + .set_wol = m_can_set_wol, }; static const struct ethtool_ops m_can_ethtool_ops = { .get_ts_info = ethtool_op_get_ts_info, + .get_wol = m_can_get_wol, + .set_wol = m_can_set_wol, }; static int register_m_can_dev(struct m_can_classdev *cdev) @@ -2361,6 +2395,9 @@ struct m_can_classdev *m_can_class_allocate_dev(struct device *dev, goto out; } + if (dev->of_node && of_property_read_bool(dev->of_node, "wakeup-source")) + device_set_wakeup_capable(dev, true); + /* Get TX FIFO size * Defines the total amount of echo buffers for loopback */