From 33f4336cbd32c21717b60d013693a0bd51a27db6 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:37 -0300 Subject: [PATCH 01/11] net: dsa: realtek: drop cleanup from realtek_ops MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It was never used and never referenced. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Alvin Šipraga Reviewed-by: Florian Fainelli Reviewed-by: Linus Walleij Reviewed-by: Vladimir Oltean Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek.h | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index 790488e9c667..e9ee778665b2 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -91,7 +91,6 @@ struct realtek_ops { int (*detect)(struct realtek_priv *priv); int (*reset_chip)(struct realtek_priv *priv); int (*setup)(struct realtek_priv *priv); - void (*cleanup)(struct realtek_priv *priv); int (*get_mib_counter)(struct realtek_priv *priv, int port, struct rtl8366_mib_counter *mib, From ded3813b44fe11a3bbd2c9d7df8870e8c19a7ccd Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:38 -0300 Subject: [PATCH 02/11] net: dsa: realtek: introduce REALTEK_DSA namespace Create a namespace to group the exported symbols. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-mdio.c | 1 + drivers/net/dsa/realtek/realtek-smi.c | 1 + drivers/net/dsa/realtek/rtl8365mb.c | 1 + drivers/net/dsa/realtek/rtl8366-core.c | 22 +++++++++++----------- drivers/net/dsa/realtek/rtl8366rb.c | 1 + 5 files changed, 15 insertions(+), 11 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index 292e6d087e8b..c2572463679f 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -288,3 +288,4 @@ mdio_module_driver(realtek_mdio_driver); MODULE_AUTHOR("Luiz Angelo Daros de Luca "); MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via MDIO interface"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 755546ed8db6..668336515119 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -565,3 +565,4 @@ module_platform_driver(realtek_smi_driver); MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via SMI interface"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index b072045eb154..c42ee8241ca2 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -2177,3 +2177,4 @@ EXPORT_SYMBOL_GPL(rtl8365mb_variant); MODULE_AUTHOR("Alvin Šipraga "); MODULE_DESCRIPTION("Driver for RTL8365MB-VC ethernet switch"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/rtl8366-core.c b/drivers/net/dsa/realtek/rtl8366-core.c index 59f98d2c8769..7c6520ba3a26 100644 --- a/drivers/net/dsa/realtek/rtl8366-core.c +++ b/drivers/net/dsa/realtek/rtl8366-core.c @@ -34,7 +34,7 @@ int rtl8366_mc_is_used(struct realtek_priv *priv, int mc_index, int *used) return 0; } -EXPORT_SYMBOL_GPL(rtl8366_mc_is_used); +EXPORT_SYMBOL_NS_GPL(rtl8366_mc_is_used, REALTEK_DSA); /** * rtl8366_obtain_mc() - retrieve or allocate a VLAN member configuration @@ -187,7 +187,7 @@ int rtl8366_set_vlan(struct realtek_priv *priv, int vid, u32 member, return ret; } -EXPORT_SYMBOL_GPL(rtl8366_set_vlan); +EXPORT_SYMBOL_NS_GPL(rtl8366_set_vlan, REALTEK_DSA); int rtl8366_set_pvid(struct realtek_priv *priv, unsigned int port, unsigned int vid) @@ -217,7 +217,7 @@ int rtl8366_set_pvid(struct realtek_priv *priv, unsigned int port, return 0; } -EXPORT_SYMBOL_GPL(rtl8366_set_pvid); +EXPORT_SYMBOL_NS_GPL(rtl8366_set_pvid, REALTEK_DSA); int rtl8366_enable_vlan4k(struct realtek_priv *priv, bool enable) { @@ -243,7 +243,7 @@ int rtl8366_enable_vlan4k(struct realtek_priv *priv, bool enable) priv->vlan4k_enabled = enable; return 0; } -EXPORT_SYMBOL_GPL(rtl8366_enable_vlan4k); +EXPORT_SYMBOL_NS_GPL(rtl8366_enable_vlan4k, REALTEK_DSA); int rtl8366_enable_vlan(struct realtek_priv *priv, bool enable) { @@ -265,7 +265,7 @@ int rtl8366_enable_vlan(struct realtek_priv *priv, bool enable) return ret; } -EXPORT_SYMBOL_GPL(rtl8366_enable_vlan); +EXPORT_SYMBOL_NS_GPL(rtl8366_enable_vlan, REALTEK_DSA); int rtl8366_reset_vlan(struct realtek_priv *priv) { @@ -290,7 +290,7 @@ int rtl8366_reset_vlan(struct realtek_priv *priv) return 0; } -EXPORT_SYMBOL_GPL(rtl8366_reset_vlan); +EXPORT_SYMBOL_NS_GPL(rtl8366_reset_vlan, REALTEK_DSA); int rtl8366_vlan_add(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan, @@ -345,7 +345,7 @@ int rtl8366_vlan_add(struct dsa_switch *ds, int port, return 0; } -EXPORT_SYMBOL_GPL(rtl8366_vlan_add); +EXPORT_SYMBOL_NS_GPL(rtl8366_vlan_add, REALTEK_DSA); int rtl8366_vlan_del(struct dsa_switch *ds, int port, const struct switchdev_obj_port_vlan *vlan) @@ -389,7 +389,7 @@ int rtl8366_vlan_del(struct dsa_switch *ds, int port, return 0; } -EXPORT_SYMBOL_GPL(rtl8366_vlan_del); +EXPORT_SYMBOL_NS_GPL(rtl8366_vlan_del, REALTEK_DSA); void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset, uint8_t *data) @@ -403,7 +403,7 @@ void rtl8366_get_strings(struct dsa_switch *ds, int port, u32 stringset, for (i = 0; i < priv->num_mib_counters; i++) ethtool_puts(&data, priv->mib_counters[i].name); } -EXPORT_SYMBOL_GPL(rtl8366_get_strings); +EXPORT_SYMBOL_NS_GPL(rtl8366_get_strings, REALTEK_DSA); int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset) { @@ -417,7 +417,7 @@ int rtl8366_get_sset_count(struct dsa_switch *ds, int port, int sset) return priv->num_mib_counters; } -EXPORT_SYMBOL_GPL(rtl8366_get_sset_count); +EXPORT_SYMBOL_NS_GPL(rtl8366_get_sset_count, REALTEK_DSA); void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) { @@ -441,4 +441,4 @@ void rtl8366_get_ethtool_stats(struct dsa_switch *ds, int port, uint64_t *data) data[i] = mibvalue; } } -EXPORT_SYMBOL_GPL(rtl8366_get_ethtool_stats); +EXPORT_SYMBOL_NS_GPL(rtl8366_get_ethtool_stats, REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c index e3b6a470ca67..6661d4ba6882 100644 --- a/drivers/net/dsa/realtek/rtl8366rb.c +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -1938,3 +1938,4 @@ EXPORT_SYMBOL_GPL(rtl8366rb_variant); MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Driver for RTL8366RB ethernet switch"); MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(REALTEK_DSA); From bce254b839abe67577bebdef0838796af409c229 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:39 -0300 Subject: [PATCH 03/11] net: dsa: realtek: convert variants into real drivers Previously, the interface modules realtek-smi and realtek-mdio served as a platform and an MDIO driver, respectively. Each interface module redundantly specified the same compatible strings for both variants and referenced symbols from the variants. Now, each variant module has been transformed into a unified driver serving both as a platform and an MDIO driver. This modification reverses the relationship between the interface and variant modules, with the variant module now utilizing symbols from the interface modules. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/Kconfig | 20 +++---- drivers/net/dsa/realtek/realtek-mdio.c | 68 +++++++++++++++--------- drivers/net/dsa/realtek/realtek-mdio.h | 48 +++++++++++++++++ drivers/net/dsa/realtek/realtek-smi.c | 73 +++++++++++++++----------- drivers/net/dsa/realtek/realtek-smi.h | 48 +++++++++++++++++ drivers/net/dsa/realtek/rtl8365mb.c | 54 ++++++++++++++++++- drivers/net/dsa/realtek/rtl8366rb.c | 54 ++++++++++++++++++- 7 files changed, 292 insertions(+), 73 deletions(-) create mode 100644 drivers/net/dsa/realtek/realtek-mdio.h create mode 100644 drivers/net/dsa/realtek/realtek-smi.h diff --git a/drivers/net/dsa/realtek/Kconfig b/drivers/net/dsa/realtek/Kconfig index 060165a85fb7..9d182fde11b4 100644 --- a/drivers/net/dsa/realtek/Kconfig +++ b/drivers/net/dsa/realtek/Kconfig @@ -16,37 +16,29 @@ menuconfig NET_DSA_REALTEK if NET_DSA_REALTEK config NET_DSA_REALTEK_MDIO - tristate "Realtek MDIO interface driver" + tristate "Realtek MDIO interface support" depends on OF - depends on NET_DSA_REALTEK_RTL8365MB || NET_DSA_REALTEK_RTL8366RB - depends on NET_DSA_REALTEK_RTL8365MB || !NET_DSA_REALTEK_RTL8365MB - depends on NET_DSA_REALTEK_RTL8366RB || !NET_DSA_REALTEK_RTL8366RB help Select to enable support for registering switches configured through MDIO. config NET_DSA_REALTEK_SMI - tristate "Realtek SMI interface driver" + tristate "Realtek SMI interface support" depends on OF - depends on NET_DSA_REALTEK_RTL8365MB || NET_DSA_REALTEK_RTL8366RB - depends on NET_DSA_REALTEK_RTL8365MB || !NET_DSA_REALTEK_RTL8365MB - depends on NET_DSA_REALTEK_RTL8366RB || !NET_DSA_REALTEK_RTL8366RB help Select to enable support for registering switches connected through SMI. config NET_DSA_REALTEK_RTL8365MB - tristate "Realtek RTL8365MB switch subdriver" - imply NET_DSA_REALTEK_SMI - imply NET_DSA_REALTEK_MDIO + tristate "Realtek RTL8365MB switch driver" + depends on NET_DSA_REALTEK_SMI || NET_DSA_REALTEK_MDIO select NET_DSA_TAG_RTL8_4 help Select to enable support for Realtek RTL8365MB-VC and RTL8367S. config NET_DSA_REALTEK_RTL8366RB - tristate "Realtek RTL8366RB switch subdriver" - imply NET_DSA_REALTEK_SMI - imply NET_DSA_REALTEK_MDIO + tristate "Realtek RTL8366RB switch driver" + depends on NET_DSA_REALTEK_SMI || NET_DSA_REALTEK_MDIO select NET_DSA_TAG_RTL4_A help Select to enable support for Realtek RTL8366RB. diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index c2572463679f..7c5372561587 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -25,6 +25,7 @@ #include #include "realtek.h" +#include "realtek-mdio.h" /* Read/write via mdiobus */ #define REALTEK_MDIO_CTRL0_REG 31 @@ -140,7 +141,19 @@ static const struct regmap_config realtek_mdio_nolock_regmap_config = { .disable_locking = true, }; -static int realtek_mdio_probe(struct mdio_device *mdiodev) +/** + * realtek_mdio_probe() - Probe a platform device for an MDIO-connected switch + * @mdiodev: mdio_device to probe on. + * + * This function should be used as the .probe in an mdio_driver. It + * initializes realtek_priv and read data from the device-tree node. The switch + * is hard reset if a method is provided. It checks the switch chip ID and, + * finally, a DSA switch is registered. + * + * Context: Can sleep. Takes and releases priv->map_lock. + * Return: Returns 0 on success, a negative error on failure. + */ +int realtek_mdio_probe(struct mdio_device *mdiodev) { struct realtek_priv *priv; struct device *dev = &mdiodev->dev; @@ -235,8 +248,20 @@ static int realtek_mdio_probe(struct mdio_device *mdiodev) return 0; } +EXPORT_SYMBOL_NS_GPL(realtek_mdio_probe, REALTEK_DSA); -static void realtek_mdio_remove(struct mdio_device *mdiodev) +/** + * realtek_mdio_remove() - Remove the driver of an MDIO-connected switch + * @mdiodev: mdio_device to be removed. + * + * This function should be used as the .remove_new in an mdio_driver. First + * it unregisters the DSA switch and cleans internal data. If a method is + * provided, the hard reset is asserted to avoid traffic leakage. + * + * Context: Can sleep. + * Return: Nothing. + */ +void realtek_mdio_remove(struct mdio_device *mdiodev) { struct realtek_priv *priv = dev_get_drvdata(&mdiodev->dev); @@ -249,8 +274,21 @@ static void realtek_mdio_remove(struct mdio_device *mdiodev) if (priv->reset) gpiod_set_value(priv->reset, 1); } +EXPORT_SYMBOL_NS_GPL(realtek_mdio_remove, REALTEK_DSA); -static void realtek_mdio_shutdown(struct mdio_device *mdiodev) +/** + * realtek_mdio_shutdown() - Shutdown the driver of a MDIO-connected switch + * @mdiodev: mdio_device shutting down. + * + * This function should be used as the .shutdown in an mdio_driver. It shuts + * down the DSA switch and cleans the platform driver data, to prevent + * realtek_mdio_remove() from running afterwards, which is possible if the + * parent bus implements its own .shutdown() as .remove(). + * + * Context: Can sleep. + * Return: Nothing. + */ +void realtek_mdio_shutdown(struct mdio_device *mdiodev) { struct realtek_priv *priv = dev_get_drvdata(&mdiodev->dev); @@ -261,29 +299,7 @@ static void realtek_mdio_shutdown(struct mdio_device *mdiodev) dev_set_drvdata(&mdiodev->dev, NULL); } - -static const struct of_device_id realtek_mdio_of_match[] = { -#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8366RB) - { .compatible = "realtek,rtl8366rb", .data = &rtl8366rb_variant, }, -#endif -#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8365MB) - { .compatible = "realtek,rtl8365mb", .data = &rtl8365mb_variant, }, -#endif - { /* sentinel */ }, -}; -MODULE_DEVICE_TABLE(of, realtek_mdio_of_match); - -static struct mdio_driver realtek_mdio_driver = { - .mdiodrv.driver = { - .name = "realtek-mdio", - .of_match_table = realtek_mdio_of_match, - }, - .probe = realtek_mdio_probe, - .remove = realtek_mdio_remove, - .shutdown = realtek_mdio_shutdown, -}; - -mdio_module_driver(realtek_mdio_driver); +EXPORT_SYMBOL_NS_GPL(realtek_mdio_shutdown, REALTEK_DSA); MODULE_AUTHOR("Luiz Angelo Daros de Luca "); MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via MDIO interface"); diff --git a/drivers/net/dsa/realtek/realtek-mdio.h b/drivers/net/dsa/realtek/realtek-mdio.h new file mode 100644 index 000000000000..ee70f6a5b8ff --- /dev/null +++ b/drivers/net/dsa/realtek/realtek-mdio.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef _REALTEK_MDIO_H +#define _REALTEK_MDIO_H + +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_MDIO) + +static inline int realtek_mdio_driver_register(struct mdio_driver *drv) +{ + return mdio_driver_register(drv); +} + +static inline void realtek_mdio_driver_unregister(struct mdio_driver *drv) +{ + mdio_driver_unregister(drv); +} + +int realtek_mdio_probe(struct mdio_device *mdiodev); +void realtek_mdio_remove(struct mdio_device *mdiodev); +void realtek_mdio_shutdown(struct mdio_device *mdiodev); + +#else /* IS_ENABLED(CONFIG_NET_DSA_REALTEK_MDIO) */ + +static inline int realtek_mdio_driver_register(struct mdio_driver *drv) +{ + return 0; +} + +static inline void realtek_mdio_driver_unregister(struct mdio_driver *drv) +{ +} + +static inline int realtek_mdio_probe(struct mdio_device *mdiodev) +{ + return -ENOENT; +} + +static inline void realtek_mdio_remove(struct mdio_device *mdiodev) +{ +} + +static inline void realtek_mdio_shutdown(struct mdio_device *mdiodev) +{ +} + +#endif /* IS_ENABLED(CONFIG_NET_DSA_REALTEK_MDIO) */ + +#endif /* _REALTEK_MDIO_H */ diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 668336515119..2a6a884bb45e 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -40,6 +40,7 @@ #include #include "realtek.h" +#include "realtek-smi.h" #define REALTEK_SMI_ACK_RETRY_COUNT 5 @@ -408,7 +409,19 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) return ret; } -static int realtek_smi_probe(struct platform_device *pdev) +/** + * realtek_smi_probe() - Probe a platform device for an SMI-connected switch + * @pdev: platform_device to probe on. + * + * This function should be used as the .probe in a platform_driver. It + * initializes realtek_priv and read data from the device-tree node. The switch + * is hard reset if a method is provided. It checks the switch chip ID and, + * finally, a DSA switch is registered. + * + * Context: Can sleep. Takes and releases priv->map_lock. + * Return: Returns 0 on success, a negative error on failure. + */ +int realtek_smi_probe(struct platform_device *pdev) { const struct realtek_variant *var; struct device *dev = &pdev->dev; @@ -505,8 +518,20 @@ static int realtek_smi_probe(struct platform_device *pdev) } return 0; } +EXPORT_SYMBOL_NS_GPL(realtek_smi_probe, REALTEK_DSA); -static void realtek_smi_remove(struct platform_device *pdev) +/** + * realtek_smi_remove() - Remove the driver of a SMI-connected switch + * @pdev: platform_device to be removed. + * + * This function should be used as the .remove_new in a platform_driver. First + * it unregisters the DSA switch and cleans internal data. If a method is + * provided, the hard reset is asserted to avoid traffic leakage. + * + * Context: Can sleep. + * Return: Nothing. + */ +void realtek_smi_remove(struct platform_device *pdev) { struct realtek_priv *priv = platform_get_drvdata(pdev); @@ -521,8 +546,21 @@ static void realtek_smi_remove(struct platform_device *pdev) if (priv->reset) gpiod_set_value(priv->reset, 1); } +EXPORT_SYMBOL_NS_GPL(realtek_smi_remove, REALTEK_DSA); -static void realtek_smi_shutdown(struct platform_device *pdev) +/** + * realtek_smi_shutdown() - Shutdown the driver of a SMI-connected switch + * @pdev: platform_device shutting down. + * + * This function should be used as the .shutdown in a platform_driver. It shuts + * down the DSA switch and cleans the platform driver data, to prevent + * realtek_smi_remove() from running afterwards, which is possible if the + * parent bus implements its own .shutdown() as .remove(). + * + * Context: Can sleep. + * Return: Nothing. + */ +void realtek_smi_shutdown(struct platform_device *pdev) { struct realtek_priv *priv = platform_get_drvdata(pdev); @@ -533,34 +571,7 @@ static void realtek_smi_shutdown(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); } - -static const struct of_device_id realtek_smi_of_match[] = { -#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8366RB) - { - .compatible = "realtek,rtl8366rb", - .data = &rtl8366rb_variant, - }, -#endif -#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_RTL8365MB) - { - .compatible = "realtek,rtl8365mb", - .data = &rtl8365mb_variant, - }, -#endif - { /* sentinel */ }, -}; -MODULE_DEVICE_TABLE(of, realtek_smi_of_match); - -static struct platform_driver realtek_smi_driver = { - .driver = { - .name = "realtek-smi", - .of_match_table = realtek_smi_of_match, - }, - .probe = realtek_smi_probe, - .remove_new = realtek_smi_remove, - .shutdown = realtek_smi_shutdown, -}; -module_platform_driver(realtek_smi_driver); +EXPORT_SYMBOL_NS_GPL(realtek_smi_shutdown, REALTEK_DSA); MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via SMI interface"); diff --git a/drivers/net/dsa/realtek/realtek-smi.h b/drivers/net/dsa/realtek/realtek-smi.h new file mode 100644 index 000000000000..ea49a2edd3c8 --- /dev/null +++ b/drivers/net/dsa/realtek/realtek-smi.h @@ -0,0 +1,48 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef _REALTEK_SMI_H +#define _REALTEK_SMI_H + +#if IS_ENABLED(CONFIG_NET_DSA_REALTEK_SMI) + +static inline int realtek_smi_driver_register(struct platform_driver *drv) +{ + return platform_driver_register(drv); +} + +static inline void realtek_smi_driver_unregister(struct platform_driver *drv) +{ + platform_driver_unregister(drv); +} + +int realtek_smi_probe(struct platform_device *pdev); +void realtek_smi_remove(struct platform_device *pdev); +void realtek_smi_shutdown(struct platform_device *pdev); + +#else /* IS_ENABLED(CONFIG_NET_DSA_REALTEK_SMI) */ + +static inline int realtek_smi_driver_register(struct platform_driver *drv) +{ + return 0; +} + +static inline void realtek_smi_driver_unregister(struct platform_driver *drv) +{ +} + +static inline int realtek_smi_probe(struct platform_device *pdev) +{ + return -ENOENT; +} + +static inline void realtek_smi_remove(struct platform_device *pdev) +{ +} + +static inline void realtek_smi_shutdown(struct platform_device *pdev) +{ +} + +#endif /* IS_ENABLED(CONFIG_NET_DSA_REALTEK_SMI) */ + +#endif /* _REALTEK_SMI_H */ diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index c42ee8241ca2..e67c4562f5db 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -101,6 +101,8 @@ #include #include "realtek.h" +#include "realtek-smi.h" +#include "realtek-mdio.h" /* Family-specific data and limits */ #define RTL8365MB_PHYADDRMAX 7 @@ -2172,7 +2174,57 @@ const struct realtek_variant rtl8365mb_variant = { .cmd_write = 0xb8, .chip_data_sz = sizeof(struct rtl8365mb), }; -EXPORT_SYMBOL_GPL(rtl8365mb_variant); + +static const struct of_device_id rtl8365mb_of_match[] = { + { .compatible = "realtek,rtl8365mb", .data = &rtl8365mb_variant, }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rtl8365mb_of_match); + +static struct platform_driver rtl8365mb_smi_driver = { + .driver = { + .name = "rtl8365mb-smi", + .of_match_table = rtl8365mb_of_match, + }, + .probe = realtek_smi_probe, + .remove_new = realtek_smi_remove, + .shutdown = realtek_smi_shutdown, +}; + +static struct mdio_driver rtl8365mb_mdio_driver = { + .mdiodrv.driver = { + .name = "rtl8365mb-mdio", + .of_match_table = rtl8365mb_of_match, + }, + .probe = realtek_mdio_probe, + .remove = realtek_mdio_remove, + .shutdown = realtek_mdio_shutdown, +}; + +static int rtl8365mb_init(void) +{ + int ret; + + ret = realtek_mdio_driver_register(&rtl8365mb_mdio_driver); + if (ret) + return ret; + + ret = realtek_smi_driver_register(&rtl8365mb_smi_driver); + if (ret) { + realtek_mdio_driver_unregister(&rtl8365mb_mdio_driver); + return ret; + } + + return 0; +} +module_init(rtl8365mb_init); + +static void __exit rtl8365mb_exit(void) +{ + realtek_smi_driver_unregister(&rtl8365mb_smi_driver); + realtek_mdio_driver_unregister(&rtl8365mb_mdio_driver); +} +module_exit(rtl8365mb_exit); MODULE_AUTHOR("Alvin Šipraga "); MODULE_DESCRIPTION("Driver for RTL8365MB-VC ethernet switch"); diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c index 6661d4ba6882..747407ae8225 100644 --- a/drivers/net/dsa/realtek/rtl8366rb.c +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -23,6 +23,8 @@ #include #include "realtek.h" +#include "realtek-smi.h" +#include "realtek-mdio.h" #define RTL8366RB_PORT_NUM_CPU 5 #define RTL8366RB_NUM_PORTS 6 @@ -1933,7 +1935,57 @@ const struct realtek_variant rtl8366rb_variant = { .cmd_write = 0xa8, .chip_data_sz = sizeof(struct rtl8366rb), }; -EXPORT_SYMBOL_GPL(rtl8366rb_variant); + +static const struct of_device_id rtl8366rb_of_match[] = { + { .compatible = "realtek,rtl8366rb", .data = &rtl8366rb_variant, }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, rtl8366rb_of_match); + +static struct platform_driver rtl8366rb_smi_driver = { + .driver = { + .name = "rtl8366rb-smi", + .of_match_table = rtl8366rb_of_match, + }, + .probe = realtek_smi_probe, + .remove_new = realtek_smi_remove, + .shutdown = realtek_smi_shutdown, +}; + +static struct mdio_driver rtl8366rb_mdio_driver = { + .mdiodrv.driver = { + .name = "rtl8366rb-mdio", + .of_match_table = rtl8366rb_of_match, + }, + .probe = realtek_mdio_probe, + .remove = realtek_mdio_remove, + .shutdown = realtek_mdio_shutdown, +}; + +static int rtl8366rb_init(void) +{ + int ret; + + ret = realtek_mdio_driver_register(&rtl8366rb_mdio_driver); + if (ret) + return ret; + + ret = realtek_smi_driver_register(&rtl8366rb_smi_driver); + if (ret) { + realtek_mdio_driver_unregister(&rtl8366rb_mdio_driver); + return ret; + } + + return 0; +} +module_init(rtl8366rb_init); + +static void __exit rtl8366rb_exit(void) +{ + realtek_smi_driver_unregister(&rtl8366rb_smi_driver); + realtek_mdio_driver_unregister(&rtl8366rb_mdio_driver); +} +module_exit(rtl8366rb_exit); MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Driver for RTL8366RB ethernet switch"); From 4667a1db2f550d23e01ba655fce331196ead6e92 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:40 -0300 Subject: [PATCH 04/11] net: dsa: realtek: keep variant reference in realtek_priv Instead of copying values from the variant, we can keep a reference in realtek_priv. This is a preliminary change for sharing code betwen interfaces. It will allow to move most of the probe into a common module while still allow code specific to each interface to read variant fields. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-mdio.c | 4 +--- drivers/net/dsa/realtek/realtek-smi.c | 10 ++++------ drivers/net/dsa/realtek/realtek.h | 5 ++--- 3 files changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index 7c5372561587..7be00aa2a9e7 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -196,9 +196,7 @@ int realtek_mdio_probe(struct mdio_device *mdiodev) priv->dev = &mdiodev->dev; priv->chip_data = (void *)priv + sizeof(*priv); - priv->clk_delay = var->clk_delay; - priv->cmd_read = var->cmd_read; - priv->cmd_write = var->cmd_write; + priv->variant = var; priv->ops = var->ops; priv->write_reg_noack = realtek_mdio_write; diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 2a6a884bb45e..ad3b57311015 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -46,7 +46,7 @@ static inline void realtek_smi_clk_delay(struct realtek_priv *priv) { - ndelay(priv->clk_delay); + ndelay(priv->variant->clk_delay); } static void realtek_smi_start(struct realtek_priv *priv) @@ -209,7 +209,7 @@ static int realtek_smi_read_reg(struct realtek_priv *priv, u32 addr, u32 *data) realtek_smi_start(priv); /* Send READ command */ - ret = realtek_smi_write_byte(priv, priv->cmd_read); + ret = realtek_smi_write_byte(priv, priv->variant->cmd_read); if (ret) goto out; @@ -250,7 +250,7 @@ static int realtek_smi_write_reg(struct realtek_priv *priv, realtek_smi_start(priv); /* Send WRITE command */ - ret = realtek_smi_write_byte(priv, priv->cmd_write); + ret = realtek_smi_write_byte(priv, priv->variant->cmd_write); if (ret) goto out; @@ -459,9 +459,7 @@ int realtek_smi_probe(struct platform_device *pdev) /* Link forward and backward */ priv->dev = dev; - priv->clk_delay = var->clk_delay; - priv->cmd_read = var->cmd_read; - priv->cmd_write = var->cmd_write; + priv->variant = var; priv->ops = var->ops; priv->setup_interface = realtek_smi_setup_mdio; diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index e9ee778665b2..c7d5ef99e9db 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -58,9 +58,8 @@ struct realtek_priv { struct mii_bus *bus; int mdio_addr; - unsigned int clk_delay; - u8 cmd_read; - u8 cmd_write; + const struct realtek_variant *variant; + spinlock_t lock; /* Locks around command writes */ struct dsa_switch *ds; struct irq_domain *irqdomain; From 8be040ecd94c1a9a137927d18534edfae0a9b68a Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:41 -0300 Subject: [PATCH 05/11] net: dsa: realtek: common rtl83xx module Some code can be shared between both interface modules (MDIO and SMI) and among variants. These interface functions migrated to a common module: - rtl83xx_lock - rtl83xx_unlock - rtl83xx_probe - rtl83xx_register_switch - rtl83xx_unregister_switch - rtl83xx_shutdown - rtl83xx_remove The reset during probe was moved to the end of the common probe. This way, we avoid a reset if anything else fails. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/Makefile | 2 + drivers/net/dsa/realtek/realtek-mdio.c | 152 +++------------- drivers/net/dsa/realtek/realtek-smi.c | 166 ++++------------- drivers/net/dsa/realtek/realtek.h | 1 + drivers/net/dsa/realtek/rtl8365mb.c | 9 +- drivers/net/dsa/realtek/rtl8366rb.c | 9 +- drivers/net/dsa/realtek/rtl83xx.c | 235 +++++++++++++++++++++++++ drivers/net/dsa/realtek/rtl83xx.h | 21 +++ 8 files changed, 322 insertions(+), 273 deletions(-) create mode 100644 drivers/net/dsa/realtek/rtl83xx.c create mode 100644 drivers/net/dsa/realtek/rtl83xx.h diff --git a/drivers/net/dsa/realtek/Makefile b/drivers/net/dsa/realtek/Makefile index 0aab57252a7c..d579127f05f7 100644 --- a/drivers/net/dsa/realtek/Makefile +++ b/drivers/net/dsa/realtek/Makefile @@ -1,4 +1,6 @@ # SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_NET_DSA_REALTEK) += realtek_dsa.o +realtek_dsa-objs := rtl83xx.o obj-$(CONFIG_NET_DSA_REALTEK_MDIO) += realtek-mdio.o obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o obj-$(CONFIG_NET_DSA_REALTEK_RTL8366RB) += rtl8366.o diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index 7be00aa2a9e7..90a017cbe168 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -26,6 +26,7 @@ #include "realtek.h" #include "realtek-mdio.h" +#include "rtl83xx.h" /* Read/write via mdiobus */ #define REALTEK_MDIO_CTRL0_REG 31 @@ -100,147 +101,41 @@ static int realtek_mdio_read(void *ctx, u32 reg, u32 *val) return ret; } -static void realtek_mdio_lock(void *ctx) -{ - struct realtek_priv *priv = ctx; - - mutex_lock(&priv->map_lock); -} - -static void realtek_mdio_unlock(void *ctx) -{ - struct realtek_priv *priv = ctx; - - mutex_unlock(&priv->map_lock); -} - -static const struct regmap_config realtek_mdio_regmap_config = { - .reg_bits = 10, /* A4..A0 R4..R0 */ - .val_bits = 16, - .reg_stride = 1, - /* PHY regs are at 0x8000 */ - .max_register = 0xffff, - .reg_format_endian = REGMAP_ENDIAN_BIG, +static const struct realtek_interface_info realtek_mdio_info = { .reg_read = realtek_mdio_read, .reg_write = realtek_mdio_write, - .cache_type = REGCACHE_NONE, - .lock = realtek_mdio_lock, - .unlock = realtek_mdio_unlock, -}; - -static const struct regmap_config realtek_mdio_nolock_regmap_config = { - .reg_bits = 10, /* A4..A0 R4..R0 */ - .val_bits = 16, - .reg_stride = 1, - /* PHY regs are at 0x8000 */ - .max_register = 0xffff, - .reg_format_endian = REGMAP_ENDIAN_BIG, - .reg_read = realtek_mdio_read, - .reg_write = realtek_mdio_write, - .cache_type = REGCACHE_NONE, - .disable_locking = true, }; /** * realtek_mdio_probe() - Probe a platform device for an MDIO-connected switch * @mdiodev: mdio_device to probe on. * - * This function should be used as the .probe in an mdio_driver. It - * initializes realtek_priv and read data from the device-tree node. The switch - * is hard reset if a method is provided. It checks the switch chip ID and, - * finally, a DSA switch is registered. + * This function should be used as the .probe in an mdio_driver. After + * calling the common probe function for both interfaces, it initializes the + * values specific for MDIO-connected devices. Finally, it calls a common + * function to register the DSA switch. * * Context: Can sleep. Takes and releases priv->map_lock. * Return: Returns 0 on success, a negative error on failure. */ int realtek_mdio_probe(struct mdio_device *mdiodev) { - struct realtek_priv *priv; struct device *dev = &mdiodev->dev; - const struct realtek_variant *var; - struct regmap_config rc; - struct device_node *np; + struct realtek_priv *priv; int ret; - var = of_device_get_match_data(dev); - if (!var) - return -EINVAL; + priv = rtl83xx_probe(dev, &realtek_mdio_info); + if (IS_ERR(priv)) + return PTR_ERR(priv); - priv = devm_kzalloc(&mdiodev->dev, - size_add(sizeof(*priv), var->chip_data_sz), - GFP_KERNEL); - if (!priv) - return -ENOMEM; - - mutex_init(&priv->map_lock); - - rc = realtek_mdio_regmap_config; - rc.lock_arg = priv; - priv->map = devm_regmap_init(dev, NULL, priv, &rc); - if (IS_ERR(priv->map)) { - ret = PTR_ERR(priv->map); - dev_err(dev, "regmap init failed: %d\n", ret); - return ret; - } - - rc = realtek_mdio_nolock_regmap_config; - priv->map_nolock = devm_regmap_init(dev, NULL, priv, &rc); - if (IS_ERR(priv->map_nolock)) { - ret = PTR_ERR(priv->map_nolock); - dev_err(dev, "regmap init failed: %d\n", ret); - return ret; - } - - priv->mdio_addr = mdiodev->addr; priv->bus = mdiodev->bus; - priv->dev = &mdiodev->dev; - priv->chip_data = (void *)priv + sizeof(*priv); - - priv->variant = var; - priv->ops = var->ops; - + priv->mdio_addr = mdiodev->addr; priv->write_reg_noack = realtek_mdio_write; + priv->ds_ops = priv->variant->ds_ops_mdio; - np = dev->of_node; - - dev_set_drvdata(dev, priv); - - /* TODO: if power is software controlled, set up any regulators here */ - priv->leds_disabled = of_property_read_bool(np, "realtek,disable-leds"); - - priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); - if (IS_ERR(priv->reset)) { - dev_err(dev, "failed to get RESET GPIO\n"); - return PTR_ERR(priv->reset); - } - - if (priv->reset) { - gpiod_set_value(priv->reset, 1); - dev_dbg(dev, "asserted RESET\n"); - msleep(REALTEK_HW_STOP_DELAY); - gpiod_set_value(priv->reset, 0); - msleep(REALTEK_HW_START_DELAY); - dev_dbg(dev, "deasserted RESET\n"); - } - - ret = priv->ops->detect(priv); + ret = rtl83xx_register_switch(priv); if (ret) { - dev_err(dev, "unable to detect switch\n"); - return ret; - } - - priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL); - if (!priv->ds) - return -ENOMEM; - - priv->ds->dev = dev; - priv->ds->num_ports = priv->num_ports; - priv->ds->priv = priv; - priv->ds->ops = var->ds_ops_mdio; - - ret = dsa_register_switch(priv->ds); - if (ret) { - dev_err(priv->dev, "unable to register switch ret = %d\n", ret); + rtl83xx_remove(priv); return ret; } @@ -253,8 +148,7 @@ EXPORT_SYMBOL_NS_GPL(realtek_mdio_probe, REALTEK_DSA); * @mdiodev: mdio_device to be removed. * * This function should be used as the .remove_new in an mdio_driver. First - * it unregisters the DSA switch and cleans internal data. If a method is - * provided, the hard reset is asserted to avoid traffic leakage. + * it unregisters the DSA switch and then it calls the common remove function. * * Context: Can sleep. * Return: Nothing. @@ -266,11 +160,9 @@ void realtek_mdio_remove(struct mdio_device *mdiodev) if (!priv) return; - dsa_unregister_switch(priv->ds); + rtl83xx_unregister_switch(priv); - /* leave the device reset asserted */ - if (priv->reset) - gpiod_set_value(priv->reset, 1); + rtl83xx_remove(priv); } EXPORT_SYMBOL_NS_GPL(realtek_mdio_remove, REALTEK_DSA); @@ -278,10 +170,8 @@ EXPORT_SYMBOL_NS_GPL(realtek_mdio_remove, REALTEK_DSA); * realtek_mdio_shutdown() - Shutdown the driver of a MDIO-connected switch * @mdiodev: mdio_device shutting down. * - * This function should be used as the .shutdown in an mdio_driver. It shuts - * down the DSA switch and cleans the platform driver data, to prevent - * realtek_mdio_remove() from running afterwards, which is possible if the - * parent bus implements its own .shutdown() as .remove(). + * This function should be used as the .shutdown in a platform_driver. It calls + * the common shutdown function. * * Context: Can sleep. * Return: Nothing. @@ -293,9 +183,7 @@ void realtek_mdio_shutdown(struct mdio_device *mdiodev) if (!priv) return; - dsa_switch_shutdown(priv->ds); - - dev_set_drvdata(&mdiodev->dev, NULL); + rtl83xx_shutdown(priv); } EXPORT_SYMBOL_NS_GPL(realtek_mdio_shutdown, REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index ad3b57311015..d676cc44d517 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -41,6 +41,7 @@ #include "realtek.h" #include "realtek-smi.h" +#include "rtl83xx.h" #define REALTEK_SMI_ACK_RETRY_COUNT 5 @@ -311,47 +312,6 @@ static int realtek_smi_read(void *ctx, u32 reg, u32 *val) return realtek_smi_read_reg(priv, reg, val); } -static void realtek_smi_lock(void *ctx) -{ - struct realtek_priv *priv = ctx; - - mutex_lock(&priv->map_lock); -} - -static void realtek_smi_unlock(void *ctx) -{ - struct realtek_priv *priv = ctx; - - mutex_unlock(&priv->map_lock); -} - -static const struct regmap_config realtek_smi_regmap_config = { - .reg_bits = 10, /* A4..A0 R4..R0 */ - .val_bits = 16, - .reg_stride = 1, - /* PHY regs are at 0x8000 */ - .max_register = 0xffff, - .reg_format_endian = REGMAP_ENDIAN_BIG, - .reg_read = realtek_smi_read, - .reg_write = realtek_smi_write, - .cache_type = REGCACHE_NONE, - .lock = realtek_smi_lock, - .unlock = realtek_smi_unlock, -}; - -static const struct regmap_config realtek_smi_nolock_regmap_config = { - .reg_bits = 10, /* A4..A0 R4..R0 */ - .val_bits = 16, - .reg_stride = 1, - /* PHY regs are at 0x8000 */ - .max_register = 0xffff, - .reg_format_endian = REGMAP_ENDIAN_BIG, - .reg_read = realtek_smi_read, - .reg_write = realtek_smi_write, - .cache_type = REGCACHE_NONE, - .disable_locking = true, -}; - static int realtek_smi_mdio_read(struct mii_bus *bus, int addr, int regnum) { struct realtek_priv *priv = bus->priv; @@ -409,111 +369,56 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) return ret; } +static const struct realtek_interface_info realtek_smi_info = { + .reg_read = realtek_smi_read, + .reg_write = realtek_smi_write, +}; + /** * realtek_smi_probe() - Probe a platform device for an SMI-connected switch * @pdev: platform_device to probe on. * - * This function should be used as the .probe in a platform_driver. It - * initializes realtek_priv and read data from the device-tree node. The switch - * is hard reset if a method is provided. It checks the switch chip ID and, - * finally, a DSA switch is registered. + * This function should be used as the .probe in a platform_driver. After + * calling the common probe function for both interfaces, it initializes the + * values specific for SMI-connected devices. Finally, it calls a common + * function to register the DSA switch. * * Context: Can sleep. Takes and releases priv->map_lock. * Return: Returns 0 on success, a negative error on failure. */ int realtek_smi_probe(struct platform_device *pdev) { - const struct realtek_variant *var; struct device *dev = &pdev->dev; struct realtek_priv *priv; - struct regmap_config rc; - struct device_node *np; int ret; - var = of_device_get_match_data(dev); - np = dev->of_node; - - priv = devm_kzalloc(dev, sizeof(*priv) + var->chip_data_sz, GFP_KERNEL); - if (!priv) - return -ENOMEM; - priv->chip_data = (void *)priv + sizeof(*priv); - - mutex_init(&priv->map_lock); - - rc = realtek_smi_regmap_config; - rc.lock_arg = priv; - priv->map = devm_regmap_init(dev, NULL, priv, &rc); - if (IS_ERR(priv->map)) { - ret = PTR_ERR(priv->map); - dev_err(dev, "regmap init failed: %d\n", ret); - return ret; - } - - rc = realtek_smi_nolock_regmap_config; - priv->map_nolock = devm_regmap_init(dev, NULL, priv, &rc); - if (IS_ERR(priv->map_nolock)) { - ret = PTR_ERR(priv->map_nolock); - dev_err(dev, "regmap init failed: %d\n", ret); - return ret; - } - - /* Link forward and backward */ - priv->dev = dev; - priv->variant = var; - priv->ops = var->ops; - - priv->setup_interface = realtek_smi_setup_mdio; - priv->write_reg_noack = realtek_smi_write_reg_noack; - - dev_set_drvdata(dev, priv); - spin_lock_init(&priv->lock); - - /* TODO: if power is software controlled, set up any regulators here */ - - priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); - if (IS_ERR(priv->reset)) { - dev_err(dev, "failed to get RESET GPIO\n"); - return PTR_ERR(priv->reset); - } - if (priv->reset) { - gpiod_set_value(priv->reset, 1); - dev_dbg(dev, "asserted RESET\n"); - msleep(REALTEK_HW_STOP_DELAY); - gpiod_set_value(priv->reset, 0); - msleep(REALTEK_HW_START_DELAY); - dev_dbg(dev, "deasserted RESET\n"); - } + priv = rtl83xx_probe(dev, &realtek_smi_info); + if (IS_ERR(priv)) + return PTR_ERR(priv); /* Fetch MDIO pins */ priv->mdc = devm_gpiod_get_optional(dev, "mdc", GPIOD_OUT_LOW); - if (IS_ERR(priv->mdc)) + if (IS_ERR(priv->mdc)) { + rtl83xx_remove(priv); return PTR_ERR(priv->mdc); + } + priv->mdio = devm_gpiod_get_optional(dev, "mdio", GPIOD_OUT_LOW); - if (IS_ERR(priv->mdio)) + if (IS_ERR(priv->mdio)) { + rtl83xx_remove(priv); return PTR_ERR(priv->mdio); + } - priv->leds_disabled = of_property_read_bool(np, "realtek,disable-leds"); + priv->write_reg_noack = realtek_smi_write_reg_noack; + priv->setup_interface = realtek_smi_setup_mdio; + priv->ds_ops = priv->variant->ds_ops_smi; - ret = priv->ops->detect(priv); + ret = rtl83xx_register_switch(priv); if (ret) { - dev_err(dev, "unable to detect switch\n"); + rtl83xx_remove(priv); return ret; } - priv->ds = devm_kzalloc(dev, sizeof(*priv->ds), GFP_KERNEL); - if (!priv->ds) - return -ENOMEM; - - priv->ds->dev = dev; - priv->ds->num_ports = priv->num_ports; - priv->ds->priv = priv; - - priv->ds->ops = var->ds_ops_smi; - ret = dsa_register_switch(priv->ds); - if (ret) { - dev_err_probe(dev, ret, "unable to register switch\n"); - return ret; - } return 0; } EXPORT_SYMBOL_NS_GPL(realtek_smi_probe, REALTEK_DSA); @@ -523,8 +428,8 @@ EXPORT_SYMBOL_NS_GPL(realtek_smi_probe, REALTEK_DSA); * @pdev: platform_device to be removed. * * This function should be used as the .remove_new in a platform_driver. First - * it unregisters the DSA switch and cleans internal data. If a method is - * provided, the hard reset is asserted to avoid traffic leakage. + * it unregisters the DSA switch and cleans internal data. Finally, it calls + * the common remove function. * * Context: Can sleep. * Return: Nothing. @@ -536,13 +441,12 @@ void realtek_smi_remove(struct platform_device *pdev) if (!priv) return; - dsa_unregister_switch(priv->ds); + rtl83xx_unregister_switch(priv); + if (priv->user_mii_bus) of_node_put(priv->user_mii_bus->dev.of_node); - /* leave the device reset asserted */ - if (priv->reset) - gpiod_set_value(priv->reset, 1); + rtl83xx_remove(priv); } EXPORT_SYMBOL_NS_GPL(realtek_smi_remove, REALTEK_DSA); @@ -550,10 +454,8 @@ EXPORT_SYMBOL_NS_GPL(realtek_smi_remove, REALTEK_DSA); * realtek_smi_shutdown() - Shutdown the driver of a SMI-connected switch * @pdev: platform_device shutting down. * - * This function should be used as the .shutdown in a platform_driver. It shuts - * down the DSA switch and cleans the platform driver data, to prevent - * realtek_smi_remove() from running afterwards, which is possible if the - * parent bus implements its own .shutdown() as .remove(). + * This function should be used as the .shutdown in a platform_driver. It calls + * the common shutdown function. * * Context: Can sleep. * Return: Nothing. @@ -565,9 +467,7 @@ void realtek_smi_shutdown(struct platform_device *pdev) if (!priv) return; - dsa_switch_shutdown(priv->ds); - - platform_set_drvdata(pdev, NULL); + rtl83xx_shutdown(priv); } EXPORT_SYMBOL_NS_GPL(realtek_smi_shutdown, REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index c7d5ef99e9db..e9e28b189509 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -62,6 +62,7 @@ struct realtek_priv { spinlock_t lock; /* Locks around command writes */ struct dsa_switch *ds; + const struct dsa_switch_ops *ds_ops; struct irq_domain *irqdomain; bool leds_disabled; diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index e67c4562f5db..60f826a5a00a 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -103,6 +103,7 @@ #include "realtek.h" #include "realtek-smi.h" #include "realtek-mdio.h" +#include "rtl83xx.h" /* Family-specific data and limits */ #define RTL8365MB_PHYADDRMAX 7 @@ -691,7 +692,7 @@ static int rtl8365mb_phy_ocp_read(struct realtek_priv *priv, int phy, u32 val; int ret; - mutex_lock(&priv->map_lock); + rtl83xx_lock(priv); ret = rtl8365mb_phy_poll_busy(priv); if (ret) @@ -724,7 +725,7 @@ static int rtl8365mb_phy_ocp_read(struct realtek_priv *priv, int phy, *data = val & 0xFFFF; out: - mutex_unlock(&priv->map_lock); + rtl83xx_unlock(priv); return ret; } @@ -735,7 +736,7 @@ static int rtl8365mb_phy_ocp_write(struct realtek_priv *priv, int phy, u32 val; int ret; - mutex_lock(&priv->map_lock); + rtl83xx_lock(priv); ret = rtl8365mb_phy_poll_busy(priv); if (ret) @@ -766,7 +767,7 @@ static int rtl8365mb_phy_ocp_write(struct realtek_priv *priv, int phy, goto out; out: - mutex_unlock(&priv->map_lock); + rtl83xx_unlock(priv); return 0; } diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c index 747407ae8225..a0c365325b4a 100644 --- a/drivers/net/dsa/realtek/rtl8366rb.c +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -25,6 +25,7 @@ #include "realtek.h" #include "realtek-smi.h" #include "realtek-mdio.h" +#include "rtl83xx.h" #define RTL8366RB_PORT_NUM_CPU 5 #define RTL8366RB_NUM_PORTS 6 @@ -1720,7 +1721,7 @@ static int rtl8366rb_phy_read(struct realtek_priv *priv, int phy, int regnum) if (phy > RTL8366RB_PHY_NO_MAX) return -EINVAL; - mutex_lock(&priv->map_lock); + rtl83xx_lock(priv); ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG, RTL8366RB_PHY_CTRL_READ); @@ -1748,7 +1749,7 @@ static int rtl8366rb_phy_read(struct realtek_priv *priv, int phy, int regnum) phy, regnum, reg, val); out: - mutex_unlock(&priv->map_lock); + rtl83xx_unlock(priv); return ret; } @@ -1762,7 +1763,7 @@ static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum, if (phy > RTL8366RB_PHY_NO_MAX) return -EINVAL; - mutex_lock(&priv->map_lock); + rtl83xx_lock(priv); ret = regmap_write(priv->map_nolock, RTL8366RB_PHY_ACCESS_CTRL_REG, RTL8366RB_PHY_CTRL_WRITE); @@ -1779,7 +1780,7 @@ static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum, goto out; out: - mutex_unlock(&priv->map_lock); + rtl83xx_unlock(priv); return ret; } diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c new file mode 100644 index 000000000000..0f628065f456 --- /dev/null +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -0,0 +1,235 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include + +#include "realtek.h" +#include "rtl83xx.h" + +/** + * rtl83xx_lock() - Locks the mutex used by regmaps + * @ctx: realtek_priv pointer + * + * This function is passed to regmap to be used as the lock function. + * It is also used externally to block regmap before executing multiple + * operations that must happen in sequence (which will use + * realtek_priv.map_nolock instead). + * + * Context: Can sleep. Holds priv->map_lock lock. + * Return: nothing + */ +void rtl83xx_lock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_lock(&priv->map_lock); +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_lock, REALTEK_DSA); + +/** + * rtl83xx_unlock() - Unlocks the mutex used by regmaps + * @ctx: realtek_priv pointer + * + * This function unlocks the lock acquired by rtl83xx_lock. + * + * Context: Releases priv->map_lock lock. + * Return: nothing + */ +void rtl83xx_unlock(void *ctx) +{ + struct realtek_priv *priv = ctx; + + mutex_unlock(&priv->map_lock); +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_unlock, REALTEK_DSA); + +/** + * rtl83xx_probe() - probe a Realtek switch + * @dev: the device being probed + * @interface_info: specific management interface info. + * + * This function initializes realtek_priv and reads data from the device tree + * node. The switch is hard resetted if a method is provided. + * + * Context: Can sleep. + * Return: Pointer to the realtek_priv or ERR_PTR() in case of failure. + * + * The realtek_priv pointer does not need to be freed as it is controlled by + * devres. + */ +struct realtek_priv * +rtl83xx_probe(struct device *dev, + const struct realtek_interface_info *interface_info) +{ + const struct realtek_variant *var; + struct realtek_priv *priv; + struct regmap_config rc = { + .reg_bits = 10, /* A4..A0 R4..R0 */ + .val_bits = 16, + .reg_stride = 1, + .max_register = 0xffff, + .reg_format_endian = REGMAP_ENDIAN_BIG, + .reg_read = interface_info->reg_read, + .reg_write = interface_info->reg_write, + .cache_type = REGCACHE_NONE, + .lock = rtl83xx_lock, + .unlock = rtl83xx_unlock, + }; + int ret; + + var = of_device_get_match_data(dev); + if (!var) + return ERR_PTR(-EINVAL); + + priv = devm_kzalloc(dev, size_add(sizeof(*priv), var->chip_data_sz), + GFP_KERNEL); + if (!priv) + return ERR_PTR(-ENOMEM); + + mutex_init(&priv->map_lock); + + rc.lock_arg = priv; + priv->map = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map)) { + ret = PTR_ERR(priv->map); + dev_err(dev, "regmap init failed: %d\n", ret); + return ERR_PTR(ret); + } + + rc.disable_locking = true; + priv->map_nolock = devm_regmap_init(dev, NULL, priv, &rc); + if (IS_ERR(priv->map_nolock)) { + ret = PTR_ERR(priv->map_nolock); + dev_err(dev, "regmap init failed: %d\n", ret); + return ERR_PTR(ret); + } + + /* Link forward and backward */ + priv->dev = dev; + priv->variant = var; + priv->ops = var->ops; + priv->chip_data = (void *)priv + sizeof(*priv); + + spin_lock_init(&priv->lock); + + priv->leds_disabled = of_property_read_bool(dev->of_node, + "realtek,disable-leds"); + + /* TODO: if power is software controlled, set up any regulators here */ + priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(priv->reset)) { + dev_err(dev, "failed to get RESET GPIO\n"); + return ERR_CAST(priv->reset); + } + + dev_set_drvdata(dev, priv); + + if (priv->reset) { + gpiod_set_value(priv->reset, 1); + dev_dbg(dev, "asserted RESET\n"); + msleep(REALTEK_HW_STOP_DELAY); + gpiod_set_value(priv->reset, 0); + msleep(REALTEK_HW_START_DELAY); + dev_dbg(dev, "deasserted RESET\n"); + } + + return priv; +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_probe, REALTEK_DSA); + +/** + * rtl83xx_register_switch() - detects and register a switch + * @priv: realtek_priv pointer + * + * This function first checks the switch chip ID and register a DSA + * switch. + * + * Context: Can sleep. Takes and releases priv->map_lock. + * Return: 0 on success, negative value for failure. + */ +int rtl83xx_register_switch(struct realtek_priv *priv) +{ + struct dsa_switch *ds; + int ret; + + ret = priv->ops->detect(priv); + if (ret) { + dev_err_probe(priv->dev, ret, "unable to detect switch\n"); + return ret; + } + + ds = devm_kzalloc(priv->dev, sizeof(*ds), GFP_KERNEL); + if (!ds) + return -ENOMEM; + + ds->priv = priv; + ds->dev = priv->dev; + ds->ops = priv->ds_ops; + ds->num_ports = priv->num_ports; + priv->ds = ds; + + ret = dsa_register_switch(ds); + if (ret) { + dev_err_probe(priv->dev, ret, "unable to register switch\n"); + return ret; + } + + return 0; +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_register_switch, REALTEK_DSA); + +/** + * rtl83xx_unregister_switch() - unregister a switch + * @priv: realtek_priv pointer + * + * This function unregister a DSA switch. + * + * Context: Can sleep. + * Return: Nothing. + */ +void rtl83xx_unregister_switch(struct realtek_priv *priv) +{ + dsa_unregister_switch(priv->ds); +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_unregister_switch, REALTEK_DSA); + +/** + * rtl83xx_shutdown() - shutdown a switch + * @priv: realtek_priv pointer + * + * This function shuts down the DSA switch and cleans the platform driver data, + * to prevent realtek_{smi,mdio}_remove() from running afterwards, which is + * possible if the parent bus implements its own .shutdown() as .remove(). + * + * Context: Can sleep. + * Return: Nothing. + */ +void rtl83xx_shutdown(struct realtek_priv *priv) +{ + dsa_switch_shutdown(priv->ds); + + dev_set_drvdata(priv->dev, NULL); +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_shutdown, REALTEK_DSA); + +/** + * rtl83xx_remove() - Cleanup a realtek switch driver + * @priv: realtek_priv pointer + * + * If a method is provided, this function asserts the hard reset of the switch + * in order to avoid leaking traffic when the driver is gone. + * + * Context: Might sleep if priv->gdev->chip->can_sleep. + * Return: nothing + */ +void rtl83xx_remove(struct realtek_priv *priv) +{ + /* leave the device reset asserted */ + if (priv->reset) + gpiod_set_value(priv->reset, 1); +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_remove, REALTEK_DSA); + +MODULE_AUTHOR("Luiz Angelo Daros de Luca "); +MODULE_DESCRIPTION("Realtek DSA switches common module"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/dsa/realtek/rtl83xx.h b/drivers/net/dsa/realtek/rtl83xx.h new file mode 100644 index 000000000000..a8eed92bce1a --- /dev/null +++ b/drivers/net/dsa/realtek/rtl83xx.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +#ifndef _RTL83XX_H +#define _RTL83XX_H + +struct realtek_interface_info { + int (*reg_read)(void *ctx, u32 reg, u32 *val); + int (*reg_write)(void *ctx, u32 reg, u32 val); +}; + +void rtl83xx_lock(void *ctx); +void rtl83xx_unlock(void *ctx); +struct realtek_priv * +rtl83xx_probe(struct device *dev, + const struct realtek_interface_info *interface_info); +int rtl83xx_register_switch(struct realtek_priv *priv); +void rtl83xx_unregister_switch(struct realtek_priv *priv); +void rtl83xx_shutdown(struct realtek_priv *priv); +void rtl83xx_remove(struct realtek_priv *priv); + +#endif /* _RTL83XX_H */ From 98b75c1c149c653ad11a440636213eb070325158 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:42 -0300 Subject: [PATCH 06/11] net: dsa: realtek: merge rtl83xx and interface modules into realtek_dsa Since rtl83xx and realtek-{smi,mdio} are always loaded together, we can optimize resource usage by consolidating them into a single module. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/Kconfig | 4 ++-- drivers/net/dsa/realtek/Makefile | 11 +++++++++-- drivers/net/dsa/realtek/realtek-mdio.c | 5 ----- drivers/net/dsa/realtek/realtek-smi.c | 5 ----- drivers/net/dsa/realtek/rtl83xx.c | 1 + 5 files changed, 12 insertions(+), 14 deletions(-) diff --git a/drivers/net/dsa/realtek/Kconfig b/drivers/net/dsa/realtek/Kconfig index 9d182fde11b4..6989972eebc3 100644 --- a/drivers/net/dsa/realtek/Kconfig +++ b/drivers/net/dsa/realtek/Kconfig @@ -16,14 +16,14 @@ menuconfig NET_DSA_REALTEK if NET_DSA_REALTEK config NET_DSA_REALTEK_MDIO - tristate "Realtek MDIO interface support" + bool "Realtek MDIO interface support" depends on OF help Select to enable support for registering switches configured through MDIO. config NET_DSA_REALTEK_SMI - tristate "Realtek SMI interface support" + bool "Realtek SMI interface support" depends on OF help Select to enable support for registering switches connected diff --git a/drivers/net/dsa/realtek/Makefile b/drivers/net/dsa/realtek/Makefile index d579127f05f7..35491dc20d6d 100644 --- a/drivers/net/dsa/realtek/Makefile +++ b/drivers/net/dsa/realtek/Makefile @@ -1,8 +1,15 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_NET_DSA_REALTEK) += realtek_dsa.o realtek_dsa-objs := rtl83xx.o -obj-$(CONFIG_NET_DSA_REALTEK_MDIO) += realtek-mdio.o -obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o + +ifdef CONFIG_NET_DSA_REALTEK_MDIO +realtek_dsa-objs += realtek-mdio.o +endif + +ifdef CONFIG_NET_DSA_REALTEK_SMI +realtek_dsa-objs += realtek-smi.o +endif + obj-$(CONFIG_NET_DSA_REALTEK_RTL8366RB) += rtl8366.o rtl8366-objs := rtl8366-core.o rtl8366rb.o obj-$(CONFIG_NET_DSA_REALTEK_RTL8365MB) += rtl8365mb.o diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index 90a017cbe168..04c65452da0d 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -186,8 +186,3 @@ void realtek_mdio_shutdown(struct mdio_device *mdiodev) rtl83xx_shutdown(priv); } EXPORT_SYMBOL_NS_GPL(realtek_mdio_shutdown, REALTEK_DSA); - -MODULE_AUTHOR("Luiz Angelo Daros de Luca "); -MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via MDIO interface"); -MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index d676cc44d517..10de30d3e044 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -470,8 +470,3 @@ void realtek_smi_shutdown(struct platform_device *pdev) rtl83xx_shutdown(priv); } EXPORT_SYMBOL_NS_GPL(realtek_smi_shutdown, REALTEK_DSA); - -MODULE_AUTHOR("Linus Walleij "); -MODULE_DESCRIPTION("Driver for Realtek ethernet switch connected via SMI interface"); -MODULE_LICENSE("GPL"); -MODULE_IMPORT_NS(REALTEK_DSA); diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index 0f628065f456..e42139f6e685 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -231,5 +231,6 @@ void rtl83xx_remove(struct realtek_priv *priv) EXPORT_SYMBOL_NS_GPL(rtl83xx_remove, REALTEK_DSA); MODULE_AUTHOR("Luiz Angelo Daros de Luca "); +MODULE_AUTHOR("Linus Walleij "); MODULE_DESCRIPTION("Realtek DSA switches common module"); MODULE_LICENSE("GPL"); From 8685c98d45c54346caf005de69988e13c731c533 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:43 -0300 Subject: [PATCH 07/11] net: dsa: realtek: get internal MDIO node by name The binding docs requires for SMI-connected devices that the switch must have a child node named "mdio" and with a compatible string of "realtek,smi-mdio". Meanwile, for MDIO-connected switches, the binding docs only requires a child node named "mdio". This patch changes the driver to use the common denominator for both interfaces, looking for the MDIO node by name, ignoring the compatible string. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Florian Fainelli Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-smi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 10de30d3e044..1fa8e9cb1a10 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -333,7 +333,7 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) struct device_node *mdio_np; int ret; - mdio_np = of_get_compatible_child(priv->dev->of_node, "realtek,smi-mdio"); + mdio_np = of_get_child_by_name(priv->dev->of_node, "mdio"); if (!mdio_np) { dev_err(priv->dev, "no MDIO bus node\n"); return -ENODEV; From 68c66d8d8a19088967a0ab6bb98cb5ecc80ca0be Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:44 -0300 Subject: [PATCH 08/11] net: dsa: realtek: clean user_mii_bus setup Remove the line assigning dev.of_node in mdio_bus as subsequent of_mdiobus_register will always overwrite it. As discussed in [1], allow the DSA core to be simplified, by not assigning ds->user_mii_bus when the MDIO bus is described in OF, as it is unnecessary. Since commit 3b73a7b8ec38 ("net: mdio_bus: add refcounting for fwnodes to mdiobus"), we can put the "mdio" node just after the MDIO bus registration. [1] https://lkml.kernel.org/netdev/20231213120656.x46fyad6ls7sqyzv@skbuf/T/#u Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-smi.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 1fa8e9cb1a10..0c36b43cd7b3 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -331,7 +331,7 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) { struct realtek_priv *priv = ds->priv; struct device_node *mdio_np; - int ret; + int ret = 0; mdio_np = of_get_child_by_name(priv->dev->of_node, "mdio"); if (!mdio_np) { @@ -344,15 +344,14 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) ret = -ENOMEM; goto err_put_node; } + priv->user_mii_bus->priv = priv; priv->user_mii_bus->name = "SMI user MII"; priv->user_mii_bus->read = realtek_smi_mdio_read; priv->user_mii_bus->write = realtek_smi_mdio_write; snprintf(priv->user_mii_bus->id, MII_BUS_ID_SIZE, "SMI-%d", ds->index); - priv->user_mii_bus->dev.of_node = mdio_np; priv->user_mii_bus->parent = priv->dev; - ds->user_mii_bus = priv->user_mii_bus; ret = devm_of_mdiobus_register(priv->dev, priv->user_mii_bus, mdio_np); if (ret) { @@ -361,8 +360,6 @@ static int realtek_smi_setup_mdio(struct dsa_switch *ds) goto err_put_node; } - return 0; - err_put_node: of_node_put(mdio_np); @@ -428,8 +425,7 @@ EXPORT_SYMBOL_NS_GPL(realtek_smi_probe, REALTEK_DSA); * @pdev: platform_device to be removed. * * This function should be used as the .remove_new in a platform_driver. First - * it unregisters the DSA switch and cleans internal data. Finally, it calls - * the common remove function. + * it unregisters the DSA switch and then it calls the common remove function. * * Context: Can sleep. * Return: Nothing. @@ -443,9 +439,6 @@ void realtek_smi_remove(struct platform_device *pdev) rtl83xx_unregister_switch(priv); - if (priv->user_mii_bus) - of_node_put(priv->user_mii_bus->dev.of_node); - rtl83xx_remove(priv); } EXPORT_SYMBOL_NS_GPL(realtek_smi_remove, REALTEK_DSA); From b4bd77971f3c290c4694ed710cc6967593b10bc2 Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:45 -0300 Subject: [PATCH 09/11] net: dsa: realtek: migrate user_mii_bus setup to realtek_dsa In the user MDIO driver, despite numerous references to SMI, including its compatible string, there's nothing inherently specific about the SMI interface in the user MDIO bus. Consequently, the code has been migrated to the rtl83xx module. All references to SMI have been eliminated. The MDIO bus id was changed from Realtek- to the switch devname suffixed with :user_mii, giving more information about the bus it is referencing. Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-smi.c | 57 +--------------------- drivers/net/dsa/realtek/rtl83xx.c | 68 +++++++++++++++++++++++++++ drivers/net/dsa/realtek/rtl83xx.h | 1 + 3 files changed, 70 insertions(+), 56 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index 0c36b43cd7b3..bf02276b74d0 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include #include @@ -312,60 +311,6 @@ static int realtek_smi_read(void *ctx, u32 reg, u32 *val) return realtek_smi_read_reg(priv, reg, val); } -static int realtek_smi_mdio_read(struct mii_bus *bus, int addr, int regnum) -{ - struct realtek_priv *priv = bus->priv; - - return priv->ops->phy_read(priv, addr, regnum); -} - -static int realtek_smi_mdio_write(struct mii_bus *bus, int addr, int regnum, - u16 val) -{ - struct realtek_priv *priv = bus->priv; - - return priv->ops->phy_write(priv, addr, regnum, val); -} - -static int realtek_smi_setup_mdio(struct dsa_switch *ds) -{ - struct realtek_priv *priv = ds->priv; - struct device_node *mdio_np; - int ret = 0; - - mdio_np = of_get_child_by_name(priv->dev->of_node, "mdio"); - if (!mdio_np) { - dev_err(priv->dev, "no MDIO bus node\n"); - return -ENODEV; - } - - priv->user_mii_bus = devm_mdiobus_alloc(priv->dev); - if (!priv->user_mii_bus) { - ret = -ENOMEM; - goto err_put_node; - } - - priv->user_mii_bus->priv = priv; - priv->user_mii_bus->name = "SMI user MII"; - priv->user_mii_bus->read = realtek_smi_mdio_read; - priv->user_mii_bus->write = realtek_smi_mdio_write; - snprintf(priv->user_mii_bus->id, MII_BUS_ID_SIZE, "SMI-%d", - ds->index); - priv->user_mii_bus->parent = priv->dev; - - ret = devm_of_mdiobus_register(priv->dev, priv->user_mii_bus, mdio_np); - if (ret) { - dev_err(priv->dev, "unable to register MDIO bus %s\n", - priv->user_mii_bus->id); - goto err_put_node; - } - -err_put_node: - of_node_put(mdio_np); - - return ret; -} - static const struct realtek_interface_info realtek_smi_info = { .reg_read = realtek_smi_read, .reg_write = realtek_smi_write, @@ -407,7 +352,7 @@ int realtek_smi_probe(struct platform_device *pdev) } priv->write_reg_noack = realtek_smi_write_reg_noack; - priv->setup_interface = realtek_smi_setup_mdio; + priv->setup_interface = rtl83xx_setup_user_mdio; priv->ds_ops = priv->variant->ds_ops_smi; ret = rtl83xx_register_switch(priv); diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index e42139f6e685..ceb8418dfab7 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -2,6 +2,7 @@ #include #include +#include #include "realtek.h" #include "rtl83xx.h" @@ -43,6 +44,73 @@ void rtl83xx_unlock(void *ctx) } EXPORT_SYMBOL_NS_GPL(rtl83xx_unlock, REALTEK_DSA); +static int rtl83xx_user_mdio_read(struct mii_bus *bus, int addr, int regnum) +{ + struct realtek_priv *priv = bus->priv; + + return priv->ops->phy_read(priv, addr, regnum); +} + +static int rtl83xx_user_mdio_write(struct mii_bus *bus, int addr, int regnum, + u16 val) +{ + struct realtek_priv *priv = bus->priv; + + return priv->ops->phy_write(priv, addr, regnum, val); +} + +/** + * rtl83xx_setup_user_mdio() - register the user mii bus driver + * @ds: DSA switch associated with this user_mii_bus + * + * Registers the MDIO bus for built-in Ethernet PHYs, and associates it with + * the mandatory 'mdio' child OF node of the switch. + * + * Context: Can sleep. + * Return: 0 on success, negative value for failure. + */ +int rtl83xx_setup_user_mdio(struct dsa_switch *ds) +{ + struct realtek_priv *priv = ds->priv; + struct device_node *mdio_np; + struct mii_bus *bus; + int ret = 0; + + mdio_np = of_get_child_by_name(priv->dev->of_node, "mdio"); + if (!mdio_np) { + dev_err(priv->dev, "no MDIO bus node\n"); + return -ENODEV; + } + + bus = devm_mdiobus_alloc(priv->dev); + if (!bus) { + ret = -ENOMEM; + goto err_put_node; + } + + bus->priv = priv; + bus->name = "Realtek user MII"; + bus->read = rtl83xx_user_mdio_read; + bus->write = rtl83xx_user_mdio_write; + snprintf(bus->id, MII_BUS_ID_SIZE, "%s:user_mii", dev_name(priv->dev)); + bus->parent = priv->dev; + + ret = devm_of_mdiobus_register(priv->dev, bus, mdio_np); + if (ret) { + dev_err(priv->dev, "unable to register MDIO bus %s\n", + bus->id); + goto err_put_node; + } + + priv->user_mii_bus = bus; + +err_put_node: + of_node_put(mdio_np); + + return ret; +} +EXPORT_SYMBOL_NS_GPL(rtl83xx_setup_user_mdio, REALTEK_DSA); + /** * rtl83xx_probe() - probe a Realtek switch * @dev: the device being probed diff --git a/drivers/net/dsa/realtek/rtl83xx.h b/drivers/net/dsa/realtek/rtl83xx.h index a8eed92bce1a..0ddff33df6b0 100644 --- a/drivers/net/dsa/realtek/rtl83xx.h +++ b/drivers/net/dsa/realtek/rtl83xx.h @@ -10,6 +10,7 @@ struct realtek_interface_info { void rtl83xx_lock(void *ctx); void rtl83xx_unlock(void *ctx); +int rtl83xx_setup_user_mdio(struct dsa_switch *ds); struct realtek_priv * rtl83xx_probe(struct device *dev, const struct realtek_interface_info *interface_info); From bba140a566ed075304c49c52ab32c0016cab624a Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:46 -0300 Subject: [PATCH 10/11] net: dsa: realtek: use the same mii bus driver for both interfaces The realtek-mdio will now use this driver instead of the generic DSA driver ("dsa user smi"), which should not be used with OF[1]. With a single ds_ops for both interfaces, the ds_ops in realtek_priv is no longer necessary. Now, the realtek_variant.ds_ops can be used directly. The realtek_priv.setup_interface() has been removed as we can directly call the new common function. [1] https://lkml.kernel.org/netdev/20220630200423.tieprdu5fpabflj7@bang-olufsen.dk/T/ Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek-mdio.c | 1 - drivers/net/dsa/realtek/realtek-smi.c | 2 - drivers/net/dsa/realtek/realtek.h | 5 +-- drivers/net/dsa/realtek/rtl8365mb.c | 49 +++--------------------- drivers/net/dsa/realtek/rtl8366rb.c | 52 +++----------------------- drivers/net/dsa/realtek/rtl83xx.c | 2 +- 6 files changed, 14 insertions(+), 97 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek-mdio.c b/drivers/net/dsa/realtek/realtek-mdio.c index 04c65452da0d..04b758e5a680 100644 --- a/drivers/net/dsa/realtek/realtek-mdio.c +++ b/drivers/net/dsa/realtek/realtek-mdio.c @@ -131,7 +131,6 @@ int realtek_mdio_probe(struct mdio_device *mdiodev) priv->bus = mdiodev->bus; priv->mdio_addr = mdiodev->addr; priv->write_reg_noack = realtek_mdio_write; - priv->ds_ops = priv->variant->ds_ops_mdio; ret = rtl83xx_register_switch(priv); if (ret) { diff --git a/drivers/net/dsa/realtek/realtek-smi.c b/drivers/net/dsa/realtek/realtek-smi.c index bf02276b74d0..88590ae95a75 100644 --- a/drivers/net/dsa/realtek/realtek-smi.c +++ b/drivers/net/dsa/realtek/realtek-smi.c @@ -352,8 +352,6 @@ int realtek_smi_probe(struct platform_device *pdev) } priv->write_reg_noack = realtek_smi_write_reg_noack; - priv->setup_interface = rtl83xx_setup_user_mdio; - priv->ds_ops = priv->variant->ds_ops_smi; ret = rtl83xx_register_switch(priv); if (ret) { diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index e9e28b189509..864bb9a88f14 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -62,7 +62,6 @@ struct realtek_priv { spinlock_t lock; /* Locks around command writes */ struct dsa_switch *ds; - const struct dsa_switch_ops *ds_ops; struct irq_domain *irqdomain; bool leds_disabled; @@ -73,7 +72,6 @@ struct realtek_priv { struct rtl8366_mib_counter *mib_counters; const struct realtek_ops *ops; - int (*setup_interface)(struct dsa_switch *ds); int (*write_reg_noack)(void *ctx, u32 addr, u32 data); int vlan_enabled; @@ -115,8 +113,7 @@ struct realtek_ops { }; struct realtek_variant { - const struct dsa_switch_ops *ds_ops_smi; - const struct dsa_switch_ops *ds_ops_mdio; + const struct dsa_switch_ops *ds_ops; const struct realtek_ops *ops; unsigned int clk_delay; u8 cmd_read; diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index 60f826a5a00a..778a962727ab 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -828,17 +828,6 @@ static int rtl8365mb_phy_write(struct realtek_priv *priv, int phy, int regnum, return 0; } -static int rtl8365mb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum) -{ - return rtl8365mb_phy_read(ds->priv, phy, regnum); -} - -static int rtl8365mb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum, - u16 val) -{ - return rtl8365mb_phy_write(ds->priv, phy, regnum, val); -} - static const struct rtl8365mb_extint * rtl8365mb_get_port_extint(struct realtek_priv *priv, int port) { @@ -2017,12 +2006,10 @@ static int rtl8365mb_setup(struct dsa_switch *ds) if (ret) goto out_teardown_irq; - if (priv->setup_interface) { - ret = priv->setup_interface(ds); - if (ret) { - dev_err(priv->dev, "could not set up MDIO bus\n"); - goto out_teardown_irq; - } + ret = rtl83xx_setup_user_mdio(ds); + if (ret) { + dev_err(priv->dev, "could not set up MDIO bus\n"); + goto out_teardown_irq; } /* Start statistics counter polling */ @@ -2116,7 +2103,7 @@ static int rtl8365mb_detect(struct realtek_priv *priv) return 0; } -static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = { +static const struct dsa_switch_ops rtl8365mb_switch_ops = { .get_tag_protocol = rtl8365mb_get_tag_protocol, .change_tag_protocol = rtl8365mb_change_tag_protocol, .setup = rtl8365mb_setup, @@ -2137,29 +2124,6 @@ static const struct dsa_switch_ops rtl8365mb_switch_ops_smi = { .port_max_mtu = rtl8365mb_port_max_mtu, }; -static const struct dsa_switch_ops rtl8365mb_switch_ops_mdio = { - .get_tag_protocol = rtl8365mb_get_tag_protocol, - .change_tag_protocol = rtl8365mb_change_tag_protocol, - .setup = rtl8365mb_setup, - .teardown = rtl8365mb_teardown, - .phylink_get_caps = rtl8365mb_phylink_get_caps, - .phylink_mac_config = rtl8365mb_phylink_mac_config, - .phylink_mac_link_down = rtl8365mb_phylink_mac_link_down, - .phylink_mac_link_up = rtl8365mb_phylink_mac_link_up, - .phy_read = rtl8365mb_dsa_phy_read, - .phy_write = rtl8365mb_dsa_phy_write, - .port_stp_state_set = rtl8365mb_port_stp_state_set, - .get_strings = rtl8365mb_get_strings, - .get_ethtool_stats = rtl8365mb_get_ethtool_stats, - .get_sset_count = rtl8365mb_get_sset_count, - .get_eth_phy_stats = rtl8365mb_get_phy_stats, - .get_eth_mac_stats = rtl8365mb_get_mac_stats, - .get_eth_ctrl_stats = rtl8365mb_get_ctrl_stats, - .get_stats64 = rtl8365mb_get_stats64, - .port_change_mtu = rtl8365mb_port_change_mtu, - .port_max_mtu = rtl8365mb_port_max_mtu, -}; - static const struct realtek_ops rtl8365mb_ops = { .detect = rtl8365mb_detect, .phy_read = rtl8365mb_phy_read, @@ -2167,8 +2131,7 @@ static const struct realtek_ops rtl8365mb_ops = { }; const struct realtek_variant rtl8365mb_variant = { - .ds_ops_smi = &rtl8365mb_switch_ops_smi, - .ds_ops_mdio = &rtl8365mb_switch_ops_mdio, + .ds_ops = &rtl8365mb_switch_ops, .ops = &rtl8365mb_ops, .clk_delay = 10, .cmd_read = 0xb9, diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c index a0c365325b4a..54eff9cd0c03 100644 --- a/drivers/net/dsa/realtek/rtl8366rb.c +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -1033,12 +1033,10 @@ static int rtl8366rb_setup(struct dsa_switch *ds) if (ret) dev_info(priv->dev, "no interrupt support\n"); - if (priv->setup_interface) { - ret = priv->setup_interface(ds); - if (ret) { - dev_err(priv->dev, "could not set up MDIO bus\n"); - return -ENODEV; - } + ret = rtl83xx_setup_user_mdio(ds); + if (ret) { + dev_err(priv->dev, "could not set up MDIO bus\n"); + return -ENODEV; } return 0; @@ -1785,17 +1783,6 @@ static int rtl8366rb_phy_write(struct realtek_priv *priv, int phy, int regnum, return ret; } -static int rtl8366rb_dsa_phy_read(struct dsa_switch *ds, int phy, int regnum) -{ - return rtl8366rb_phy_read(ds->priv, phy, regnum); -} - -static int rtl8366rb_dsa_phy_write(struct dsa_switch *ds, int phy, int regnum, - u16 val) -{ - return rtl8366rb_phy_write(ds->priv, phy, regnum, val); -} - static int rtl8366rb_reset_chip(struct realtek_priv *priv) { int timeout = 10; @@ -1861,7 +1848,7 @@ static int rtl8366rb_detect(struct realtek_priv *priv) return 0; } -static const struct dsa_switch_ops rtl8366rb_switch_ops_smi = { +static const struct dsa_switch_ops rtl8366rb_switch_ops = { .get_tag_protocol = rtl8366_get_tag_protocol, .setup = rtl8366rb_setup, .phylink_get_caps = rtl8366rb_phylink_get_caps, @@ -1885,32 +1872,6 @@ static const struct dsa_switch_ops rtl8366rb_switch_ops_smi = { .port_max_mtu = rtl8366rb_max_mtu, }; -static const struct dsa_switch_ops rtl8366rb_switch_ops_mdio = { - .get_tag_protocol = rtl8366_get_tag_protocol, - .setup = rtl8366rb_setup, - .phy_read = rtl8366rb_dsa_phy_read, - .phy_write = rtl8366rb_dsa_phy_write, - .phylink_get_caps = rtl8366rb_phylink_get_caps, - .phylink_mac_link_up = rtl8366rb_mac_link_up, - .phylink_mac_link_down = rtl8366rb_mac_link_down, - .get_strings = rtl8366_get_strings, - .get_ethtool_stats = rtl8366_get_ethtool_stats, - .get_sset_count = rtl8366_get_sset_count, - .port_bridge_join = rtl8366rb_port_bridge_join, - .port_bridge_leave = rtl8366rb_port_bridge_leave, - .port_vlan_filtering = rtl8366rb_vlan_filtering, - .port_vlan_add = rtl8366_vlan_add, - .port_vlan_del = rtl8366_vlan_del, - .port_enable = rtl8366rb_port_enable, - .port_disable = rtl8366rb_port_disable, - .port_pre_bridge_flags = rtl8366rb_port_pre_bridge_flags, - .port_bridge_flags = rtl8366rb_port_bridge_flags, - .port_stp_state_set = rtl8366rb_port_stp_state_set, - .port_fast_age = rtl8366rb_port_fast_age, - .port_change_mtu = rtl8366rb_change_mtu, - .port_max_mtu = rtl8366rb_max_mtu, -}; - static const struct realtek_ops rtl8366rb_ops = { .detect = rtl8366rb_detect, .get_vlan_mc = rtl8366rb_get_vlan_mc, @@ -1928,8 +1889,7 @@ static const struct realtek_ops rtl8366rb_ops = { }; const struct realtek_variant rtl8366rb_variant = { - .ds_ops_smi = &rtl8366rb_switch_ops_smi, - .ds_ops_mdio = &rtl8366rb_switch_ops_mdio, + .ds_ops = &rtl8366rb_switch_ops, .ops = &rtl8366rb_ops, .clk_delay = 10, .cmd_read = 0xa9, diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index ceb8418dfab7..80f2c38ae55a 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -232,7 +232,7 @@ int rtl83xx_register_switch(struct realtek_priv *priv) ds->priv = priv; ds->dev = priv->dev; - ds->ops = priv->ds_ops; + ds->ops = priv->variant->ds_ops; ds->num_ports = priv->num_ports; priv->ds = ds; From 9fc469b2943d9b1ff2a7800f823e7cd7a5cac0ca Mon Sep 17 00:00:00 2001 From: Luiz Angelo Daros de Luca Date: Fri, 9 Feb 2024 02:03:47 -0300 Subject: [PATCH 11/11] net: dsa: realtek: embed dsa_switch into realtek_priv MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Embed dsa_switch within realtek_priv to eliminate the need for a second memory allocation. Suggested-by: Alvin Šipraga Signed-off-by: Luiz Angelo Daros de Luca Reviewed-by: Vladimir Oltean Reviewed-by: Linus Walleij Signed-off-by: David S. Miller --- drivers/net/dsa/realtek/realtek.h | 2 +- drivers/net/dsa/realtek/rtl8365mb.c | 15 +++++++++------ drivers/net/dsa/realtek/rtl8366rb.c | 3 ++- drivers/net/dsa/realtek/rtl83xx.c | 15 +++++++-------- 4 files changed, 19 insertions(+), 16 deletions(-) diff --git a/drivers/net/dsa/realtek/realtek.h b/drivers/net/dsa/realtek/realtek.h index 864bb9a88f14..b80bfde1ad04 100644 --- a/drivers/net/dsa/realtek/realtek.h +++ b/drivers/net/dsa/realtek/realtek.h @@ -61,7 +61,7 @@ struct realtek_priv { const struct realtek_variant *variant; spinlock_t lock; /* Locks around command writes */ - struct dsa_switch *ds; + struct dsa_switch ds; struct irq_domain *irqdomain; bool leds_disabled; diff --git a/drivers/net/dsa/realtek/rtl8365mb.c b/drivers/net/dsa/realtek/rtl8365mb.c index 778a962727ab..be56373e9473 100644 --- a/drivers/net/dsa/realtek/rtl8365mb.c +++ b/drivers/net/dsa/realtek/rtl8365mb.c @@ -870,6 +870,7 @@ static int rtl8365mb_ext_config_rgmii(struct realtek_priv *priv, int port, { const struct rtl8365mb_extint *extint = rtl8365mb_get_port_extint(priv, port); + struct dsa_switch *ds = &priv->ds; struct device_node *dn; struct dsa_port *dp; int tx_delay = 0; @@ -880,7 +881,7 @@ static int rtl8365mb_ext_config_rgmii(struct realtek_priv *priv, int port, if (!extint) return -ENODEV; - dp = dsa_to_port(priv->ds, port); + dp = dsa_to_port(ds, port); dn = dp->dn; /* Set the RGMII TX/RX delay @@ -1533,6 +1534,7 @@ static void rtl8365mb_get_stats64(struct dsa_switch *ds, int port, static void rtl8365mb_stats_setup(struct realtek_priv *priv) { struct rtl8365mb *mb = priv->chip_data; + struct dsa_switch *ds = &priv->ds; int i; /* Per-chip global mutex to protect MIB counter access, since doing @@ -1543,7 +1545,7 @@ static void rtl8365mb_stats_setup(struct realtek_priv *priv) for (i = 0; i < priv->num_ports; i++) { struct rtl8365mb_port *p = &mb->ports[i]; - if (dsa_is_unused_port(priv->ds, i)) + if (dsa_is_unused_port(ds, i)) continue; /* Per-port spinlock to protect the stats64 data */ @@ -1559,12 +1561,13 @@ static void rtl8365mb_stats_setup(struct realtek_priv *priv) static void rtl8365mb_stats_teardown(struct realtek_priv *priv) { struct rtl8365mb *mb = priv->chip_data; + struct dsa_switch *ds = &priv->ds; int i; for (i = 0; i < priv->num_ports; i++) { struct rtl8365mb_port *p = &mb->ports[i]; - if (dsa_is_unused_port(priv->ds, i)) + if (dsa_is_unused_port(ds, i)) continue; cancel_delayed_work_sync(&p->mib_work); @@ -1963,7 +1966,7 @@ static int rtl8365mb_setup(struct dsa_switch *ds) dev_info(priv->dev, "no interrupt support\n"); /* Configure CPU tagging */ - dsa_switch_for_each_cpu_port(cpu_dp, priv->ds) { + dsa_switch_for_each_cpu_port(cpu_dp, ds) { cpu->mask |= BIT(cpu_dp->index); if (cpu->trap_port == RTL8365MB_MAX_NUM_PORTS) @@ -1978,7 +1981,7 @@ static int rtl8365mb_setup(struct dsa_switch *ds) for (i = 0; i < priv->num_ports; i++) { struct rtl8365mb_port *p = &mb->ports[i]; - if (dsa_is_unused_port(priv->ds, i)) + if (dsa_is_unused_port(ds, i)) continue; /* Forward only to the CPU */ @@ -1995,7 +1998,7 @@ static int rtl8365mb_setup(struct dsa_switch *ds) * ports will still forward frames to the CPU despite being * administratively down by default. */ - rtl8365mb_port_stp_state_set(priv->ds, i, BR_STATE_DISABLED); + rtl8365mb_port_stp_state_set(ds, i, BR_STATE_DISABLED); /* Set up per-port private data */ p->priv = priv; diff --git a/drivers/net/dsa/realtek/rtl8366rb.c b/drivers/net/dsa/realtek/rtl8366rb.c index 54eff9cd0c03..e10ae94cf771 100644 --- a/drivers/net/dsa/realtek/rtl8366rb.c +++ b/drivers/net/dsa/realtek/rtl8366rb.c @@ -1651,6 +1651,7 @@ static int rtl8366rb_get_mc_index(struct realtek_priv *priv, int port, int *val) static int rtl8366rb_set_mc_index(struct realtek_priv *priv, int port, int index) { + struct dsa_switch *ds = &priv->ds; struct rtl8366rb *rb; bool pvid_enabled; int ret; @@ -1675,7 +1676,7 @@ static int rtl8366rb_set_mc_index(struct realtek_priv *priv, int port, int index * not drop any untagged or C-tagged frames. Make sure to update the * filtering setting. */ - if (dsa_port_is_vlan_filtering(dsa_to_port(priv->ds, port))) + if (dsa_port_is_vlan_filtering(dsa_to_port(ds, port))) ret = rtl8366rb_drop_untagged(priv, port, !pvid_enabled); return ret; diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index 80f2c38ae55a..801873754df2 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -217,7 +217,7 @@ EXPORT_SYMBOL_NS_GPL(rtl83xx_probe, REALTEK_DSA); */ int rtl83xx_register_switch(struct realtek_priv *priv) { - struct dsa_switch *ds; + struct dsa_switch *ds = &priv->ds; int ret; ret = priv->ops->detect(priv); @@ -226,15 +226,10 @@ int rtl83xx_register_switch(struct realtek_priv *priv) return ret; } - ds = devm_kzalloc(priv->dev, sizeof(*ds), GFP_KERNEL); - if (!ds) - return -ENOMEM; - ds->priv = priv; ds->dev = priv->dev; ds->ops = priv->variant->ds_ops; ds->num_ports = priv->num_ports; - priv->ds = ds; ret = dsa_register_switch(ds); if (ret) { @@ -257,7 +252,9 @@ EXPORT_SYMBOL_NS_GPL(rtl83xx_register_switch, REALTEK_DSA); */ void rtl83xx_unregister_switch(struct realtek_priv *priv) { - dsa_unregister_switch(priv->ds); + struct dsa_switch *ds = &priv->ds; + + dsa_unregister_switch(ds); } EXPORT_SYMBOL_NS_GPL(rtl83xx_unregister_switch, REALTEK_DSA); @@ -274,7 +271,9 @@ EXPORT_SYMBOL_NS_GPL(rtl83xx_unregister_switch, REALTEK_DSA); */ void rtl83xx_shutdown(struct realtek_priv *priv) { - dsa_switch_shutdown(priv->ds); + struct dsa_switch *ds = &priv->ds; + + dsa_switch_shutdown(ds); dev_set_drvdata(priv->dev, NULL); }