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path: root/drivers/net/pcs/pcs-rzn1-miic.c
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2025-02-14net: remove phylink_pcs .neg_mode booleanRussell King (Oracle)
As all PCS are using the neg_mode parameter rather than the legacy an_mode, remove the ability to use the legacy an_mode. We remove the tests in the phylink code, unconditionally passing the PCS neg_mode parameter to PCS methods, and remove setting the flag from drivers. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://patch.msgid.link/E1tidPn-0040hd-2R@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-06net: pcs: rzn1-miic: Convert to for_each_available_child_of_node() helperGeert Uytterhoeven
Simplify miic_parse_dt() by using the for_each_available_child_of_node() helper instead of manually skipping unavailable child nodes. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/3e394d4cf8204bcf17b184bfda474085aa8ed0dd.1738771631.git.geert+renesas@glider.be Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-02-06net: pcs: rzn1-miic: fill in PCS supported_interfacesRussell King (Oracle)
Populate the PCS supported_interfaces bitmap with the interfaces that this PCS supports. This makes the manual checking in miic_validate() redundant, so remove that. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/E1tfhYq-003aTm-Nx@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-10-04net: Switch back to struct platform_driver::remove()Uwe Kleine-König
After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/net after the previous conversion commits apart from the wireless drivers to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Acked-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-28net: pcs: rzn1-miic: Init RX clock early if MAC requires itRomain Gantois
The GMAC1 controller in the RZN1 IP requires the RX MII clock signal to be started before it initializes its own hardware, thus before it calls phylink_start. Implement the pcs_pre_init() callback so that the RX clock signal can be enabled early if necessary. Reported-by: Clément Léger <clement.leger@bootlin.com> Link: https://lore.kernel.org/linux-arm-kernel/20230116103926.276869-4-clement.leger@bootlin.com/ Signed-off-by: Romain Gantois <romain.gantois@bootlin.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/20240326-rxc_bugfix-v6-7-24a74e5c761f@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-07net: pcs: rzn1-miic: update PCS driver to use neg_modeRussell King (Oracle)
Update the RZN1-MIIC PCS driver to use neg_mode rather than the mode argument to match the other updated PCS drivers. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://lore.kernel.org/r/E1rhos9-003yuW-Az@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-12-05net: pcs: rzn1-miic: Convert to platform remove callback returning voidUwe Kleine-König
The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20231117095922.876489-5-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Link: https://lore.kernel.org/r/82b728e14a68c421e269eff3b8083d9d6e62d956.1701713943.git.u.kleine-koenig@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Cross-merge networking fixes after downstream PR. Conflicts: drivers/net/ethernet/sfc/tc.c fa165e194997 ("sfc: don't unregister flow_indr if it was never registered") 3bf969e88ada ("sfc: add MAE table machinery for conntrack table") https://lore.kernel.org/all/20230818112159.7430e9b4@canb.auug.org.au/ No adjacent changes. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-08-11net: pcs: Add missing put_device call in miic_createXiang Yang
The reference of pdev->dev is taken by of_find_device_by_node, so it should be released when not need anymore. Fixes: 7dc54d3b8d91 ("net: pcs: add Renesas MII converter driver") Signed-off-by: Xiang Yang <xiangyang3@huawei.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-07-26net: phy/pcs: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20230724211905.805665-1-robh@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-09net: pcs: rzn1-miic: remove unused struct members and use miic variableClément Léger
Remove unused bulk clocks struct from the miic state and use an already existing miic variable in miic_config(). Signed-off-by: Clément Léger <clement.leger@bootlin.com> Link: https://lore.kernel.org/r/20230208161249.329631-1-clement.leger@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-01net: pcs: rzn1-miic: update speed only if interface is changedClément Léger
As stated by Russel King, miic_config() can be called as a result of ethtool setting the configuration while the link is already up. Since the speed is also set in this function, it could potentially modify the current speed that is set. This will only happen if there is no PHY present and we aren't using fixed-link mode. Handle that by storing the current interface mode in the miic_port structure and update the speed only if the interface mode is going to be changed. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Link: https://lore.kernel.org/r/20220629122003.189397-1-clement.leger@bootlin.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-29net: pcs-rzn1-miic: fix return value check in miic_probe()Yang Yingliang
On failure, devm_platform_ioremap_resource() returns a ERR_PTR() value and not NULL. Fix return value checking by using IS_ERR() and return PTR_ERR() as error value. Fixes: 7dc54d3b8d91 ("net: pcs: add Renesas MII converter driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Clément Léger <clement.leger@bootlin.com> Link: https://lore.kernel.org/r/20220628131259.3109124-1-yangyingliang@huawei.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-06-27net: pcs: add Renesas MII converter driverClément Léger
Add a PCS driver for the MII converter that is present on the Renesas RZ/N1 SoC. This MII converter is reponsible for converting MII to RMII/RGMII or act as a MII pass-trough. Exposing it as a PCS allows to reuse it in both the switch driver and the stmmac driver. Currently, this driver only allows the PCS to be used by the dual Cortex-A7 subsystem since the register locking system is not used. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Reviewed-by: Vladimir Oltean <olteanv@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>