From 165fba6c91ce99e7ed40a83e11a937e571fe1e1a Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:13 +0100 Subject: net: designware: Drop NULL priv assignment This is unnecessary, the unset structure member is initialized to NULL by default, drop the assignment. Reviewed-by: Paul Barker Signed-off-by: Marek Vasut --- drivers/net/designware.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 2ab03015ffa..c17b4078d5a 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -1041,7 +1041,6 @@ struct bb_miiphy_bus bb_miiphy_buses[] = { .get_mdio = dw_eth_bb_get_mdio, .set_mdc = dw_eth_bb_set_mdc, .delay = dw_eth_bb_delay, - .priv = NULL, } }; -- cgit v1.2.3 From bc8d7288e31a43b8ec18d3bf39cc7cb69709251e Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:17 +0100 Subject: net: designware: Reorder bb_miiphy functions Move the bb_miiphy functions before MDIO registration. This is a preparatory patch, the functions will be referenced around the MDIO registration in the follow up patches. No functional change. Signed-off-by: Marek Vasut Reviewed-by: Paul Barker --- drivers/net/designware.c | 158 +++++++++++++++++++++++------------------------ 1 file changed, 79 insertions(+), 79 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index c17b4078d5a..95a459cec2a 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -226,6 +226,85 @@ static int dw_dm_mdio_init(const char *name, void *priv) } #endif +#if IS_ENABLED(CONFIG_BITBANGMII) && IS_ENABLED(CONFIG_DM_GPIO) +static int dw_eth_bb_mdio_active(struct bb_miiphy_bus *bus) +{ + struct dw_eth_dev *priv = bus->priv; + struct gpio_desc *desc = &priv->mdio_gpio; + + desc->flags = 0; + dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + + return 0; +} + +static int dw_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus) +{ + struct dw_eth_dev *priv = bus->priv; + struct gpio_desc *desc = &priv->mdio_gpio; + + desc->flags = 0; + dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_IN); + + return 0; +} + +static int dw_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v) +{ + struct dw_eth_dev *priv = bus->priv; + + if (v) + dm_gpio_set_value(&priv->mdio_gpio, 1); + else + dm_gpio_set_value(&priv->mdio_gpio, 0); + + return 0; +} + +static int dw_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v) +{ + struct dw_eth_dev *priv = bus->priv; + + *v = dm_gpio_get_value(&priv->mdio_gpio); + + return 0; +} + +static int dw_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v) +{ + struct dw_eth_dev *priv = bus->priv; + + if (v) + dm_gpio_set_value(&priv->mdc_gpio, 1); + else + dm_gpio_set_value(&priv->mdc_gpio, 0); + + return 0; +} + +static int dw_eth_bb_delay(struct bb_miiphy_bus *bus) +{ + struct dw_eth_dev *priv = bus->priv; + + udelay(priv->bb_delay); + return 0; +} + +struct bb_miiphy_bus bb_miiphy_buses[] = { + { + .name = BB_MII_DEVNAME, + .mdio_active = dw_eth_bb_mdio_active, + .mdio_tristate = dw_eth_bb_mdio_tristate, + .set_mdio = dw_eth_bb_set_mdio, + .get_mdio = dw_eth_bb_get_mdio, + .set_mdc = dw_eth_bb_set_mdc, + .delay = dw_eth_bb_delay, + } +}; + +int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); +#endif + static void tx_descs_init(struct dw_eth_dev *priv) { struct eth_dma_regs *dma_p = priv->dma_regs_p; @@ -967,82 +1046,3 @@ static struct pci_device_id supported[] = { }; U_BOOT_PCI_DEVICE(eth_designware, supported); - -#if IS_ENABLED(CONFIG_BITBANGMII) && IS_ENABLED(CONFIG_DM_GPIO) -static int dw_eth_bb_mdio_active(struct bb_miiphy_bus *bus) -{ - struct dw_eth_dev *priv = bus->priv; - struct gpio_desc *desc = &priv->mdio_gpio; - - desc->flags = 0; - dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); - - return 0; -} - -static int dw_eth_bb_mdio_tristate(struct bb_miiphy_bus *bus) -{ - struct dw_eth_dev *priv = bus->priv; - struct gpio_desc *desc = &priv->mdio_gpio; - - desc->flags = 0; - dm_gpio_set_dir_flags(&priv->mdio_gpio, GPIOD_IS_IN); - - return 0; -} - -static int dw_eth_bb_set_mdio(struct bb_miiphy_bus *bus, int v) -{ - struct dw_eth_dev *priv = bus->priv; - - if (v) - dm_gpio_set_value(&priv->mdio_gpio, 1); - else - dm_gpio_set_value(&priv->mdio_gpio, 0); - - return 0; -} - -static int dw_eth_bb_get_mdio(struct bb_miiphy_bus *bus, int *v) -{ - struct dw_eth_dev *priv = bus->priv; - - *v = dm_gpio_get_value(&priv->mdio_gpio); - - return 0; -} - -static int dw_eth_bb_set_mdc(struct bb_miiphy_bus *bus, int v) -{ - struct dw_eth_dev *priv = bus->priv; - - if (v) - dm_gpio_set_value(&priv->mdc_gpio, 1); - else - dm_gpio_set_value(&priv->mdc_gpio, 0); - - return 0; -} - -static int dw_eth_bb_delay(struct bb_miiphy_bus *bus) -{ - struct dw_eth_dev *priv = bus->priv; - - udelay(priv->bb_delay); - return 0; -} - -struct bb_miiphy_bus bb_miiphy_buses[] = { - { - .name = BB_MII_DEVNAME, - .mdio_active = dw_eth_bb_mdio_active, - .mdio_tristate = dw_eth_bb_mdio_tristate, - .set_mdio = dw_eth_bb_set_mdio, - .get_mdio = dw_eth_bb_get_mdio, - .set_mdc = dw_eth_bb_set_mdc, - .delay = dw_eth_bb_delay, - } -}; - -int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); -#endif -- cgit v1.2.3 From ce6431141a4ad220935bbe27dd12ab569f38e263 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:20 +0100 Subject: net: designware: Drop bus index There is literally one single bbmiiphy bus in this driver, remove the bus index handling. Signed-off-by: Marek Vasut Reviewed-by: Paul Barker --- drivers/net/designware.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 95a459cec2a..de697060d28 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -905,8 +905,6 @@ int designware_eth_probe(struct udevice *dev) #if IS_ENABLED(CONFIG_BITBANGMII) && IS_ENABLED(CONFIG_DM_GPIO) if (dev_read_bool(dev, "snps,bitbang-mii")) { - int bus_idx; - debug("\n%s: use bitbang mii..\n", dev->name); ret = gpio_request_by_name(dev, "snps,mdc-gpio", 0, &priv->mdc_gpio, GPIOD_IS_OUT @@ -924,16 +922,11 @@ int designware_eth_probe(struct udevice *dev) } priv->bb_delay = dev_read_u32_default(dev, "snps,bitbang-delay", 1); - for (bus_idx = 0; bus_idx < bb_miiphy_buses_num; bus_idx++) { - if (!bb_miiphy_buses[bus_idx].priv) { - bb_miiphy_buses[bus_idx].priv = priv; - strlcpy(bb_miiphy_buses[bus_idx].name, priv->bus->name, - MDIO_NAME_LEN); - priv->bus->read = bb_miiphy_read; - priv->bus->write = bb_miiphy_write; - break; - } - } + bb_miiphy_buses[0].priv = priv; + strlcpy(bb_miiphy_buses[0].name, priv->bus->name, + MDIO_NAME_LEN); + priv->bus->read = bb_miiphy_read; + priv->bus->write = bb_miiphy_write; } #endif ret = dw_phy_init(priv, dev); -- cgit v1.2.3 From a6a38bba5d14d68d2d86e137b7408393f29c5b7a Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:21 +0100 Subject: net: designware: Extract bbmiiphy initialization into dedicated function Pull the bbmiiphy initialization code from designware_eth_probe() into dedicated function, dw_bb_mdio_init(), just like all the other MDIO initialization functions. Keep check for "snps,bitbang-mii" in the designware_eth_probe(), so the driver can initialize this MDIO only in case the property is present, and initialize regular DW MDIO in case it is not present. The dw_bb_mdio_init() allocates its own MDIO instance, because thus far code gated behind "snps,bitbang-mii" did depend on allocation of MDIO bus by the other two MDIO bus options and then rewrote the newly allocated MDIO bus callbacks, which is wrong, instead allocate proper MDIO bus with the correct callbacks outright. Signed-off-by: Marek Vasut Reviewed-by: Paul Barker --- drivers/net/designware.c | 95 ++++++++++++++++++++++++++++++++---------------- 1 file changed, 63 insertions(+), 32 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index de697060d28..c88b8df28ed 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -303,6 +303,50 @@ struct bb_miiphy_bus bb_miiphy_buses[] = { }; int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); + +static int dw_bb_mdio_init(const char *name, struct udevice *dev) +{ + struct dw_eth_dev *dwpriv = dev_get_priv(dev); + struct mii_dev *bus = mdio_alloc(); + int ret; + + if (!bus) { + printf("Failed to allocate MDIO bus\n"); + return -ENOMEM; + } + + debug("\n%s: use bitbang mii..\n", dev->name); + ret = gpio_request_by_name(dev, "snps,mdc-gpio", 0, + &dwpriv->mdc_gpio, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + if (ret) { + debug("no mdc-gpio\n"); + return ret; + } + ret = gpio_request_by_name(dev, "snps,mdio-gpio", 0, + &dwpriv->mdio_gpio, + GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE); + if (ret) { + debug("no mdio-gpio\n"); + return ret; + } + dwpriv->bb_delay = dev_read_u32_default(dev, "snps,bitbang-delay", 1); + + dwpriv->bus = bus; + dwpriv->dev = dev; + + bb_miiphy_buses[0].priv = dwpriv; + snprintf(bus->name, sizeof(bus->name), "%s", name); + strlcpy(bb_miiphy_buses[0].name, bus->name, MDIO_NAME_LEN); + bus->read = bb_miiphy_read; + bus->write = bb_miiphy_write; +#if CONFIG_IS_ENABLED(DM_GPIO) + bus->reset = dw_mdio_reset; +#endif + bus->priv = dwpriv; + + return mdio_register(bus); +} #endif static void tx_descs_init(struct dw_eth_dev *priv) @@ -801,6 +845,7 @@ int designware_eth_probe(struct udevice *dev) { struct eth_pdata *pdata = dev_get_plat(dev); struct dw_eth_dev *priv = dev_get_priv(dev); + bool __maybe_unused bbmiiphy = false; phys_addr_t iobase = pdata->iobase; void *ioaddr; int ret, err; @@ -891,44 +936,30 @@ int designware_eth_probe(struct udevice *dev) priv->interface = pdata->phy_interface; priv->max_speed = pdata->max_speed; -#if IS_ENABLED(CONFIG_DM_MDIO) - ret = dw_dm_mdio_init(dev->name, dev); -#else - ret = dw_mdio_init(dev->name, dev); -#endif - if (ret) { - err = ret; - goto mdio_err; - } - priv->bus = miiphy_get_dev_by_name(dev->name); - priv->dev = dev; - #if IS_ENABLED(CONFIG_BITBANGMII) && IS_ENABLED(CONFIG_DM_GPIO) - if (dev_read_bool(dev, "snps,bitbang-mii")) { - debug("\n%s: use bitbang mii..\n", dev->name); - ret = gpio_request_by_name(dev, "snps,mdc-gpio", 0, - &priv->mdc_gpio, GPIOD_IS_OUT - | GPIOD_IS_OUT_ACTIVE); + bbmiiphy = dev_read_bool(dev, "snps,bitbang-mii"); + if (bbmiiphy) { + ret = dw_bb_mdio_init(dev->name, dev); if (ret) { - debug("no mdc-gpio\n"); - return ret; + err = ret; + goto mdio_err; } - ret = gpio_request_by_name(dev, "snps,mdio-gpio", 0, - &priv->mdio_gpio, GPIOD_IS_OUT - | GPIOD_IS_OUT_ACTIVE); + } else +#endif + { +#if IS_ENABLED(CONFIG_DM_MDIO) + ret = dw_dm_mdio_init(dev->name, dev); +#else + ret = dw_mdio_init(dev->name, dev); +#endif if (ret) { - debug("no mdio-gpio\n"); - return ret; + err = ret; + goto mdio_err; } - priv->bb_delay = dev_read_u32_default(dev, "snps,bitbang-delay", 1); - - bb_miiphy_buses[0].priv = priv; - strlcpy(bb_miiphy_buses[0].name, priv->bus->name, - MDIO_NAME_LEN); - priv->bus->read = bb_miiphy_read; - priv->bus->write = bb_miiphy_write; + priv->bus = miiphy_get_dev_by_name(dev->name); + priv->dev = dev; } -#endif + ret = dw_phy_init(priv, dev); debug("%s, ret=%d\n", __func__, ret); if (!ret) -- cgit v1.2.3 From cbb69c2fafcc7c7e9b2336a658128cb394d8d3e4 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:27 +0100 Subject: net: designware: Allocate bb_miiphy using bb_miiphy_alloc() and fill in callbacks Allocate bb_miiphy using bb_miiphy_alloc() and fill in callbacks currently listed in bb_miiphy_buses[] array. This is a temporary duplication of assignment to avoid breakage, which will be removed in follow up patches. At this point, the bb_miiphy callbacks can reach these accessors by doing container_of() on struct mii_dev. Signed-off-by: Marek Vasut Reviewed-by: Paul Barker --- drivers/net/designware.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index c88b8df28ed..74cf8271e67 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -307,14 +307,17 @@ int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); static int dw_bb_mdio_init(const char *name, struct udevice *dev) { struct dw_eth_dev *dwpriv = dev_get_priv(dev); - struct mii_dev *bus = mdio_alloc(); + struct bb_miiphy_bus *bb_miiphy = bb_miiphy_alloc(); + struct mii_dev *bus; int ret; - if (!bus) { + if (!bb_miiphy) { printf("Failed to allocate MDIO bus\n"); return -ENOMEM; } + bus = &bb_miiphy->mii; + debug("\n%s: use bitbang mii..\n", dev->name); ret = gpio_request_by_name(dev, "snps,mdc-gpio", 0, &dwpriv->mdc_gpio, @@ -345,6 +348,15 @@ static int dw_bb_mdio_init(const char *name, struct udevice *dev) #endif bus->priv = dwpriv; + /* Copy the bus accessors, name and private data */ + bb_miiphy->mdio_active = dw_eth_bb_mdio_active; + bb_miiphy->mdio_tristate = dw_eth_bb_mdio_tristate; + bb_miiphy->set_mdio = dw_eth_bb_set_mdio; + bb_miiphy->get_mdio = dw_eth_bb_get_mdio; + bb_miiphy->set_mdc = dw_eth_bb_set_mdc; + bb_miiphy->delay = dw_eth_bb_delay; + strlcpy(bb_miiphy->name, bus->name, MDIO_NAME_LEN); + return mdio_register(bus); } #endif @@ -968,7 +980,12 @@ int designware_eth_probe(struct udevice *dev) /* continue here for cleanup if no PHY found */ err = ret; mdio_unregister(priv->bus); - mdio_free(priv->bus); +#if IS_ENABLED(CONFIG_BITBANGMII) && IS_ENABLED(CONFIG_DM_GPIO) + if (bbmiiphy) + bb_miiphy_free(container_of(priv->bus, struct bb_miiphy_bus, mii)); + else +#endif + mdio_free(priv->bus); mdio_err: #ifdef CONFIG_CLK -- cgit v1.2.3 From a23f9a786b010177839d6fe9f67c717f17f74368 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:29 +0100 Subject: net: miiphybb: Drop name field from struct bb_miiphy_bus The struct bb_miiphy_bus embeds struct struct mii_dev, which already contains one copy of name field. Drop the duplicate top level copy of name field. The a38x code does static assignment of disparate names, use snprintf(...) to fill in matching name in probe to avoid any breakage. Reviewed-by: Paul Barker Signed-off-by: Marek Vasut --- drivers/net/designware.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 74cf8271e67..5124982e683 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -292,7 +292,6 @@ static int dw_eth_bb_delay(struct bb_miiphy_bus *bus) struct bb_miiphy_bus bb_miiphy_buses[] = { { - .name = BB_MII_DEVNAME, .mdio_active = dw_eth_bb_mdio_active, .mdio_tristate = dw_eth_bb_mdio_tristate, .set_mdio = dw_eth_bb_set_mdio, @@ -340,7 +339,6 @@ static int dw_bb_mdio_init(const char *name, struct udevice *dev) bb_miiphy_buses[0].priv = dwpriv; snprintf(bus->name, sizeof(bus->name), "%s", name); - strlcpy(bb_miiphy_buses[0].name, bus->name, MDIO_NAME_LEN); bus->read = bb_miiphy_read; bus->write = bb_miiphy_write; #if CONFIG_IS_ENABLED(DM_GPIO) @@ -348,14 +346,13 @@ static int dw_bb_mdio_init(const char *name, struct udevice *dev) #endif bus->priv = dwpriv; - /* Copy the bus accessors, name and private data */ + /* Copy the bus accessors and private data */ bb_miiphy->mdio_active = dw_eth_bb_mdio_active; bb_miiphy->mdio_tristate = dw_eth_bb_mdio_tristate; bb_miiphy->set_mdio = dw_eth_bb_set_mdio; bb_miiphy->get_mdio = dw_eth_bb_get_mdio; bb_miiphy->set_mdc = dw_eth_bb_set_mdc; bb_miiphy->delay = dw_eth_bb_delay; - strlcpy(bb_miiphy->name, bus->name, MDIO_NAME_LEN); return mdio_register(bus); } -- cgit v1.2.3 From 4e6fed49becc7e8d9639966fd34695583192a3ee Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Sat, 22 Feb 2025 21:33:33 +0100 Subject: net: miiphybb: Drop bb_miiphy_buses and bb_miiphy_buses_num Neither bb_miiphy_buses nor bb_miiphy_buses_num are used anymore. Drop both of them. Reviewed-by: Paul Barker Signed-off-by: Marek Vasut --- drivers/net/designware.c | 14 -------------- 1 file changed, 14 deletions(-) (limited to 'drivers/net/designware.c') diff --git a/drivers/net/designware.c b/drivers/net/designware.c index 5124982e683..5a6e89c0575 100644 --- a/drivers/net/designware.c +++ b/drivers/net/designware.c @@ -290,19 +290,6 @@ static int dw_eth_bb_delay(struct bb_miiphy_bus *bus) return 0; } -struct bb_miiphy_bus bb_miiphy_buses[] = { - { - .mdio_active = dw_eth_bb_mdio_active, - .mdio_tristate = dw_eth_bb_mdio_tristate, - .set_mdio = dw_eth_bb_set_mdio, - .get_mdio = dw_eth_bb_get_mdio, - .set_mdc = dw_eth_bb_set_mdc, - .delay = dw_eth_bb_delay, - } -}; - -int bb_miiphy_buses_num = ARRAY_SIZE(bb_miiphy_buses); - static int dw_bb_mdio_init(const char *name, struct udevice *dev) { struct dw_eth_dev *dwpriv = dev_get_priv(dev); @@ -337,7 +324,6 @@ static int dw_bb_mdio_init(const char *name, struct udevice *dev) dwpriv->bus = bus; dwpriv->dev = dev; - bb_miiphy_buses[0].priv = dwpriv; snprintf(bus->name, sizeof(bus->name), "%s", name); bus->read = bb_miiphy_read; bus->write = bb_miiphy_write; -- cgit v1.2.3