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Miller" , Andrew Lunn , Eric Dumazet , Florian Fainelli , Jakub Kicinski , Paolo Abeni , Vladimir Oltean , Woojung Huh , Arun Ramadoss , Conor Dooley , Krzysztof Kozlowski , Rob Herring Cc: Oleksij Rempel , kernel@pengutronix.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, UNGLinuxDriver@microchip.com, "Russell King (Oracle)" , devicetree@vger.kernel.org Subject: [PATCH net-next v6 0/9] net: dsa: microchip: provide Wake on LAN support Date: Thu, 19 Oct 2023 14:28:41 +0200 Message-Id: <20231019122850.1199821-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org X-Spam-Status: No, score=-0.8 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on agentk.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (agentk.vger.email [0.0.0.0]); Thu, 19 Oct 2023 05:29:35 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780186958695750336 X-GMAIL-MSGID: 1780186958695750336 This patch series introduces extensive Wake on LAN (WoL) support for the Microchip KSZ9477 family of switches, coupled with some code refactoring and error handling enhancements. The principal aim is to enable and manage Wake on Magic Packet and other PHY event triggers for waking up the system, whilst ensuring that the switch isn't reset during a shutdown if WoL is active. The Wake on LAN functionality is optional and is particularly beneficial if the PME pins are connected to the SoC as a wake source or to a PMIC that can enable or wake the SoC. changes v6: - add variables magic_switched_off and magic_switched_on for readability - EXPORT_SYMBOL(ksz_switch_shutdown); to fix build as module changes v5: - rework Wake on Magic Packet support. - Make sure we show more or less realistic information on get_wol by comparing refcounted mac address against the ports address - fix mac address refcounting on set_wol() - rework shutdown sequence by to handle PMIC related issues. Make sure PME pin is net frequently toggled. - use wakeup_source variable instead of reading PME pin register. changes v4: - add ksz_switch_shutdown() and do not skip dsa_switch_shutdown() and etc. - try to configure MAC address on WAKE_MAGIC. If not possible, prevent WAKE_MAGIC configuration - use ksz_switch_macaddr_get() for WAKE_MAGIC. - prevent ksz_port_set_mac_address if WAKE_MAGIC is active - do some more refactoring and patch reordering changes v3: - use ethernet address of DSA master instead from devicetree - use dev_ops->wol* instead of list of supported switch - don't shutdown the switch if WoL is enabled - rework on top of latest HSR changes changes v2: - rebase against latest next Oleksij Rempel (9): net: dsa: microchip: Add missing MAC address register offset for ksz8863 dt-bindings: net: dsa: microchip: add wakeup-source property net: dsa: microchip: use wakeup-source DT property to enable PME output net: dsa: microchip: ksz9477: add Wake on LAN support net: dsa: microchip: ksz9477: Add Wake on Magic Packet support net: dsa: microchip: Refactor comment for ksz_switch_macaddr_get() function net: dsa: microchip: Add error handling for ksz_switch_macaddr_get() net: dsa: microchip: Refactor switch shutdown routine for WoL preparation net: dsa: microchip: Ensure Stable PME Pin State for Wake-on-LAN .../bindings/net/dsa/microchip,ksz.yaml | 2 + drivers/net/dsa/microchip/ksz9477.c | 198 ++++++++++++++++++ drivers/net/dsa/microchip/ksz9477.h | 5 + drivers/net/dsa/microchip/ksz9477_i2c.c | 5 +- drivers/net/dsa/microchip/ksz_common.c | 97 +++++++-- drivers/net/dsa/microchip/ksz_common.h | 10 + drivers/net/dsa/microchip/ksz_spi.c | 5 +- 7 files changed, 302 insertions(+), 20 deletions(-)