diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/790-v6.4-0013-net-dsa-mt7530-introduce-driver-for-MT7988-built-in-.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/790-v6.4-0013-net-dsa-mt7530-introduce-driver-for-MT7988-built-in-.patch | 421 |
1 files changed, 421 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.15/790-v6.4-0013-net-dsa-mt7530-introduce-driver-for-MT7988-built-in-.patch b/target/linux/generic/backport-5.15/790-v6.4-0013-net-dsa-mt7530-introduce-driver-for-MT7988-built-in-.patch new file mode 100644 index 0000000000..8210aae27c --- /dev/null +++ b/target/linux/generic/backport-5.15/790-v6.4-0013-net-dsa-mt7530-introduce-driver-for-MT7988-built-in-.patch @@ -0,0 +1,421 @@ +From 110c18bfed41421edd677935dd33be5e6507ba92 Mon Sep 17 00:00:00 2001 +From: Daniel Golle <daniel@makrotopia.org> +Date: Mon, 3 Apr 2023 02:19:40 +0100 +Subject: [PATCH 16/16] net: dsa: mt7530: introduce driver for MT7988 built-in + switch + +Add driver for the built-in Gigabit Ethernet switch which can be found +in the MediaTek MT7988 SoC. + +The switch shares most of its design with MT7530 and MT7531, but has +it's registers mapped into the SoCs register space rather than being +connected externally or internally via MDIO. + +Introduce a new platform driver to support that. + +Signed-off-by: Daniel Golle <daniel@makrotopia.org> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + MAINTAINERS | 2 + + drivers/net/dsa/Kconfig | 12 +++ + drivers/net/dsa/Makefile | 1 + + drivers/net/dsa/mt7530-mmio.c | 101 +++++++++++++++++++++++++ + drivers/net/dsa/mt7530.c | 137 +++++++++++++++++++++++++++++++++- + drivers/net/dsa/mt7530.h | 12 +-- + 6 files changed, 255 insertions(+), 10 deletions(-) + create mode 100644 drivers/net/dsa/mt7530-mmio.c + +--- a/MAINTAINERS ++++ b/MAINTAINERS +@@ -11899,9 +11899,11 @@ MEDIATEK SWITCH DRIVER + M: Sean Wang <sean.wang@mediatek.com> + M: Landen Chao <Landen.Chao@mediatek.com> + M: DENG Qingfang <dqfext@gmail.com> ++M: Daniel Golle <daniel@makrotopia.org> + L: netdev@vger.kernel.org + S: Maintained + F: drivers/net/dsa/mt7530-mdio.c ++F: drivers/net/dsa/mt7530-mmio.c + F: drivers/net/dsa/mt7530.* + F: net/dsa/tag_mtk.c + +--- a/drivers/net/dsa/Kconfig ++++ b/drivers/net/dsa/Kconfig +@@ -38,6 +38,7 @@ config NET_DSA_MT7530 + select NET_DSA_TAG_MTK + select MEDIATEK_GE_PHY + imply NET_DSA_MT7530_MDIO ++ imply NET_DSA_MT7530_MMIO + help + This enables support for the MediaTek MT7530 and MT7531 Ethernet + switch chips. Multi-chip module MT7530 in MT7621AT, MT7621DAT, +@@ -54,6 +55,17 @@ config NET_DSA_MT7530_MDIO + module MT7530 which can be found in the MT7621AT, MT7621DAT, + MT7621ST and MT7623AI SoCs. + ++config NET_DSA_MT7530_MMIO ++ tristate "MediaTek MT7530 MMIO interface driver" ++ depends on NET_DSA_MT7530 ++ depends on HAS_IOMEM ++ help ++ This enables support for the built-in Ethernet switch found ++ in the MediaTek MT7988 SoC. ++ The switch is a similar design as MT7531, but the switch registers ++ are directly mapped into the SoCs register space rather than being ++ accessible via MDIO. ++ + config NET_DSA_MV88E6060 + tristate "Marvell 88E6060 ethernet switch chip support" + select NET_DSA_TAG_TRAILER +--- a/drivers/net/dsa/Makefile ++++ b/drivers/net/dsa/Makefile +@@ -8,6 +8,7 @@ endif + obj-$(CONFIG_NET_DSA_LANTIQ_GSWIP) += lantiq_gswip.o + obj-$(CONFIG_NET_DSA_MT7530) += mt7530.o + obj-$(CONFIG_NET_DSA_MT7530_MDIO) += mt7530-mdio.o ++obj-$(CONFIG_NET_DSA_MT7530_MMIO) += mt7530-mmio.o + obj-$(CONFIG_NET_DSA_MV88E6060) += mv88e6060.o + obj-$(CONFIG_NET_DSA_REALTEK_SMI) += realtek-smi.o + realtek-smi-objs := realtek-smi-core.o rtl8366.o rtl8366rb.o +--- /dev/null ++++ b/drivers/net/dsa/mt7530-mmio.c +@@ -0,0 +1,101 @@ ++// SPDX-License-Identifier: GPL-2.0-only ++ ++#include <linux/module.h> ++#include <linux/of_platform.h> ++#include <linux/regmap.h> ++#include <linux/regulator/consumer.h> ++#include <linux/reset.h> ++#include <net/dsa.h> ++ ++#include "mt7530.h" ++ ++static const struct of_device_id mt7988_of_match[] = { ++ { .compatible = "mediatek,mt7988-switch", .data = &mt753x_table[ID_MT7988], }, ++ { /* sentinel */ }, ++}; ++MODULE_DEVICE_TABLE(of, mt7988_of_match); ++ ++static int ++mt7988_probe(struct platform_device *pdev) ++{ ++ static struct regmap_config *sw_regmap_config; ++ struct mt7530_priv *priv; ++ void __iomem *base_addr; ++ int ret; ++ ++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); ++ if (!priv) ++ return -ENOMEM; ++ ++ priv->bus = NULL; ++ priv->dev = &pdev->dev; ++ ++ ret = mt7530_probe_common(priv); ++ if (ret) ++ return ret; ++ ++ priv->rstc = devm_reset_control_get(&pdev->dev, NULL); ++ if (IS_ERR(priv->rstc)) { ++ dev_err(&pdev->dev, "Couldn't get our reset line\n"); ++ return PTR_ERR(priv->rstc); ++ } ++ ++ base_addr = devm_platform_ioremap_resource(pdev, 0); ++ if (IS_ERR(base_addr)) { ++ dev_err(&pdev->dev, "cannot request I/O memory space\n"); ++ return -ENXIO; ++ } ++ ++ sw_regmap_config = devm_kzalloc(&pdev->dev, sizeof(*sw_regmap_config), GFP_KERNEL); ++ if (!sw_regmap_config) ++ return -ENOMEM; ++ ++ sw_regmap_config->name = "switch"; ++ sw_regmap_config->reg_bits = 16; ++ sw_regmap_config->val_bits = 32; ++ sw_regmap_config->reg_stride = 4; ++ sw_regmap_config->max_register = MT7530_CREV; ++ priv->regmap = devm_regmap_init_mmio(&pdev->dev, base_addr, sw_regmap_config); ++ if (IS_ERR(priv->regmap)) ++ return PTR_ERR(priv->regmap); ++ ++ return dsa_register_switch(priv->ds); ++} ++ ++static int ++mt7988_remove(struct platform_device *pdev) ++{ ++ struct mt7530_priv *priv = platform_get_drvdata(pdev); ++ ++ if (priv) ++ mt7530_remove_common(priv); ++ ++ return 0; ++} ++ ++static void mt7988_shutdown(struct platform_device *pdev) ++{ ++ struct mt7530_priv *priv = platform_get_drvdata(pdev); ++ ++ if (!priv) ++ return; ++ ++ dsa_switch_shutdown(priv->ds); ++ ++ dev_set_drvdata(&pdev->dev, NULL); ++} ++ ++static struct platform_driver mt7988_platform_driver = { ++ .probe = mt7988_probe, ++ .remove = mt7988_remove, ++ .shutdown = mt7988_shutdown, ++ .driver = { ++ .name = "mt7530-mmio", ++ .of_match_table = mt7988_of_match, ++ }, ++}; ++module_platform_driver(mt7988_platform_driver); ++ ++MODULE_AUTHOR("Daniel Golle <daniel@makrotopia.org>"); ++MODULE_DESCRIPTION("Driver for Mediatek MT7530 Switch (MMIO)"); ++MODULE_LICENSE("GPL"); +--- a/drivers/net/dsa/mt7530.c ++++ b/drivers/net/dsa/mt7530.c +@@ -1984,6 +1984,47 @@ static const struct irq_domain_ops mt753 + }; + + static void ++mt7988_irq_mask(struct irq_data *d) ++{ ++ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d); ++ ++ priv->irq_enable &= ~BIT(d->hwirq); ++ mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable); ++} ++ ++static void ++mt7988_irq_unmask(struct irq_data *d) ++{ ++ struct mt7530_priv *priv = irq_data_get_irq_chip_data(d); ++ ++ priv->irq_enable |= BIT(d->hwirq); ++ mt7530_mii_write(priv, MT7530_SYS_INT_EN, priv->irq_enable); ++} ++ ++static struct irq_chip mt7988_irq_chip = { ++ .name = KBUILD_MODNAME, ++ .irq_mask = mt7988_irq_mask, ++ .irq_unmask = mt7988_irq_unmask, ++}; ++ ++static int ++mt7988_irq_map(struct irq_domain *domain, unsigned int irq, ++ irq_hw_number_t hwirq) ++{ ++ irq_set_chip_data(irq, domain->host_data); ++ irq_set_chip_and_handler(irq, &mt7988_irq_chip, handle_simple_irq); ++ irq_set_nested_thread(irq, true); ++ irq_set_noprobe(irq); ++ ++ return 0; ++} ++ ++static const struct irq_domain_ops mt7988_irq_domain_ops = { ++ .map = mt7988_irq_map, ++ .xlate = irq_domain_xlate_onecell, ++}; ++ ++static void + mt7530_setup_mdio_irq(struct mt7530_priv *priv) + { + struct dsa_switch *ds = priv->ds; +@@ -2017,8 +2058,15 @@ mt7530_setup_irq(struct mt7530_priv *pri + return priv->irq ? : -EINVAL; + } + +- priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS, +- &mt7530_irq_domain_ops, priv); ++ if (priv->id == ID_MT7988) ++ priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS, ++ &mt7988_irq_domain_ops, ++ priv); ++ else ++ priv->irq_domain = irq_domain_add_linear(np, MT7530_NUM_PHYS, ++ &mt7530_irq_domain_ops, ++ priv); ++ + if (!priv->irq_domain) { + dev_err(dev, "failed to create IRQ domain\n"); + return -ENOMEM; +@@ -2507,6 +2555,25 @@ static void mt7531_mac_port_get_caps(str + } + } + ++static void mt7988_mac_port_get_caps(struct dsa_switch *ds, int port, ++ struct phylink_config *config) ++{ ++ phy_interface_zero(config->supported_interfaces); ++ ++ switch (port) { ++ case 0 ... 4: /* Internal phy */ ++ __set_bit(PHY_INTERFACE_MODE_INTERNAL, ++ config->supported_interfaces); ++ break; ++ ++ case 6: ++ __set_bit(PHY_INTERFACE_MODE_INTERNAL, ++ config->supported_interfaces); ++ config->mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | ++ MAC_10000FD; ++ } ++} ++ + static int + mt753x_pad_setup(struct dsa_switch *ds, const struct phylink_link_state *state) + { +@@ -2583,6 +2650,17 @@ static bool mt753x_is_mac_port(u32 port) + } + + static int ++mt7988_mac_config(struct dsa_switch *ds, int port, unsigned int mode, ++ phy_interface_t interface) ++{ ++ if (dsa_is_cpu_port(ds, port) && ++ interface == PHY_INTERFACE_MODE_INTERNAL) ++ return 0; ++ ++ return -EINVAL; ++} ++ ++static int + mt7531_mac_config(struct dsa_switch *ds, int port, unsigned int mode, + phy_interface_t interface) + { +@@ -2652,7 +2730,8 @@ mt753x_phylink_mac_config(struct dsa_swi + + switch (port) { + case 0 ... 4: /* Internal phy */ +- if (state->interface != PHY_INTERFACE_MODE_GMII) ++ if (state->interface != PHY_INTERFACE_MODE_GMII && ++ state->interface != PHY_INTERFACE_MODE_INTERNAL) + goto unsupported; + break; + case 5: /* 2nd cpu port with phy of port 0 or 4 / external phy */ +@@ -2730,7 +2809,8 @@ static void mt753x_phylink_mac_link_up(s + /* MT753x MAC works in 1G full duplex mode for all up-clocked + * variants. + */ +- if (interface == PHY_INTERFACE_MODE_TRGMII || ++ if (interface == PHY_INTERFACE_MODE_INTERNAL || ++ interface == PHY_INTERFACE_MODE_TRGMII || + (phy_interface_mode_is_8023z(interface))) { + speed = SPEED_1000; + duplex = DUPLEX_FULL; +@@ -2810,6 +2890,21 @@ mt7531_cpu_port_config(struct dsa_switch + return 0; + } + ++static int ++mt7988_cpu_port_config(struct dsa_switch *ds, int port) ++{ ++ struct mt7530_priv *priv = ds->priv; ++ ++ mt7530_write(priv, MT7530_PMCR_P(port), ++ PMCR_CPU_PORT_SETTING(priv->id)); ++ ++ mt753x_phylink_mac_link_up(ds, port, MLO_AN_FIXED, ++ PHY_INTERFACE_MODE_INTERNAL, NULL, ++ SPEED_10000, DUPLEX_FULL, true, true); ++ ++ return 0; ++} ++ + static void mt753x_phylink_get_caps(struct dsa_switch *ds, int port, + struct phylink_config *config) + { +@@ -2955,6 +3050,27 @@ static int mt753x_set_mac_eee(struct dsa + return 0; + } + ++static int mt7988_pad_setup(struct dsa_switch *ds, phy_interface_t interface) ++{ ++ return 0; ++} ++ ++static int mt7988_setup(struct dsa_switch *ds) ++{ ++ struct mt7530_priv *priv = ds->priv; ++ ++ /* Reset the switch */ ++ reset_control_assert(priv->rstc); ++ usleep_range(20, 50); ++ reset_control_deassert(priv->rstc); ++ usleep_range(20, 50); ++ ++ /* Reset the switch PHYs */ ++ mt7530_write(priv, MT7530_SYS_CTRL, SYS_CTRL_PHY_RST); ++ ++ return mt7531_setup_common(ds); ++} ++ + const struct dsa_switch_ops mt7530_switch_ops = { + .get_tag_protocol = mtk_get_tag_protocol, + .setup = mt753x_setup, +@@ -3023,6 +3139,17 @@ const struct mt753x_info mt753x_table[] + .mac_port_get_caps = mt7531_mac_port_get_caps, + .mac_port_config = mt7531_mac_config, + }, ++ [ID_MT7988] = { ++ .id = ID_MT7988, ++ .pcs_ops = &mt7530_pcs_ops, ++ .sw_setup = mt7988_setup, ++ .phy_read = mt7531_ind_phy_read, ++ .phy_write = mt7531_ind_phy_write, ++ .pad_setup = mt7988_pad_setup, ++ .cpu_port_config = mt7988_cpu_port_config, ++ .mac_port_get_caps = mt7988_mac_port_get_caps, ++ .mac_port_config = mt7988_mac_config, ++ }, + }; + EXPORT_SYMBOL_GPL(mt753x_table); + +--- a/drivers/net/dsa/mt7530.h ++++ b/drivers/net/dsa/mt7530.h +@@ -18,6 +18,7 @@ enum mt753x_id { + ID_MT7530 = 0, + ID_MT7621 = 1, + ID_MT7531 = 2, ++ ID_MT7988 = 3, + }; + + #define NUM_TRGMII_CTRL 5 +@@ -54,11 +55,11 @@ enum mt753x_id { + #define MT7531_MIRROR_PORT_SET(x) (((x) & MIRROR_MASK) << 16) + #define MT7531_CPU_PMAP_MASK GENMASK(7, 0) + +-#define MT753X_MIRROR_REG(id) (((id) == ID_MT7531) ? \ ++#define MT753X_MIRROR_REG(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \ + MT7531_CFC : MT7530_MFC) +-#define MT753X_MIRROR_EN(id) (((id) == ID_MT7531) ? \ ++#define MT753X_MIRROR_EN(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \ + MT7531_MIRROR_EN : MIRROR_EN) +-#define MT753X_MIRROR_MASK(id) (((id) == ID_MT7531) ? \ ++#define MT753X_MIRROR_MASK(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \ + MT7531_MIRROR_MASK : MIRROR_MASK) + + /* Registers for BPDU and PAE frame control*/ +@@ -295,9 +296,8 @@ enum mt7530_vlan_port_acc_frm { + MT7531_FORCE_DPX | \ + MT7531_FORCE_RX_FC | \ + MT7531_FORCE_TX_FC) +-#define PMCR_FORCE_MODE_ID(id) (((id) == ID_MT7531) ? \ +- MT7531_FORCE_MODE : \ +- PMCR_FORCE_MODE) ++#define PMCR_FORCE_MODE_ID(id) ((((id) == ID_MT7531) || ((id) == ID_MT7988)) ? \ ++ MT7531_FORCE_MODE : PMCR_FORCE_MODE) + #define PMCR_LINK_SETTINGS_MASK (PMCR_TX_EN | PMCR_FORCE_SPEED_1000 | \ + PMCR_RX_EN | PMCR_FORCE_SPEED_100 | \ + PMCR_TX_FC_EN | PMCR_RX_FC_EN | \ |