From: Mans Andersson <[email protected]> Add suport for the TI TLK105 and TLK106 10/100Mbit ethernet phys.
In addition the TLK10X needs to be removed from DP83848 driver as the power back off support is added here for this device. Datasheet: http://www.ti.com/lit/gpn/tlk106 --- .../devicetree/bindings/net/ti,tlk10x.txt | 27 +++ drivers/net/phy/Kconfig | 5 + drivers/net/phy/Makefile | 1 + drivers/net/phy/dp83848.c | 3 - drivers/net/phy/tlk10x.c | 209 +++++++++++++++++++++ 5 files changed, 242 insertions(+), 3 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/ti,tlk10x.txt create mode 100644 drivers/net/phy/tlk10x.c diff --git a/Documentation/devicetree/bindings/net/ti,tlk10x.txt b/Documentation/devicetree/bindings/net/ti,tlk10x.txt new file mode 100644 index 0000000..371d0d7 --- /dev/null +++ b/Documentation/devicetree/bindings/net/ti,tlk10x.txt @@ -0,0 +1,27 @@ +* Texas Instruments - TLK105 / TLK106 ethernet PHYs + +Required properties: + - reg - The ID number for the phy, usually a small integer + +Optional properties: + - ti,power-back-off - Power Back Off Level + Please refer to data sheet chapter 8.6 and TI Application + Note SLLA3228 + 0 - Normal Operation + 1 - Level 1 (up to 140m cable between TLK link partners) + 2 - Level 2 (up to 100m cable between TLK link partners) + 3 - Level 3 (up to 80m cable between TLK link partners) + +Default child nodes are standard Ethernet PHY device +nodes as described in Documentation/devicetree/bindings/net/phy.txt + +Example: + + ethernet-phy@0 { + reg = <0>; + ti,power-back-off = <2>; + }; + +Datasheets and documentation can be found at: +http://www.ti.com/lit/gpn/tlk106 +http://www.ti.com/lit/an/slla328/slla328.pdf diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index bdfbabb..c980240 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -295,6 +295,11 @@ config DP83867_PHY ---help--- Currently supports the DP83867 PHY. +config TLK10X_PHY + tristate "Texas Instruments TLK10x PHY" + ---help--- + Supports the TLK105 and TLK106 PHYs. + config FIXED_PHY tristate "MDIO Bus/PHY emulation with fixed speed/link PHYs" depends on PHYLIB diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 01acbcb..37e4e02 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -79,5 +79,6 @@ obj-$(CONFIG_ROCKCHIP_PHY) += rockchip.o obj-$(CONFIG_SMSC_PHY) += smsc.o obj-$(CONFIG_STE10XP) += ste10Xp.o obj-$(CONFIG_TERANETICS_PHY) += teranetics.o +obj-$(CONFIG_TLK10X_PHY) += tlk10x.o obj-$(CONFIG_VITESSE_PHY) += vitesse.o obj-$(CONFIG_XILINX_GMII2RGMII) += xilinx_gmii2rgmii.o diff --git a/drivers/net/phy/dp83848.c b/drivers/net/phy/dp83848.c index cd09c3a..435f401 100644 --- a/drivers/net/phy/dp83848.c +++ b/drivers/net/phy/dp83848.c @@ -19,7 +19,6 @@ #define TI_DP83848C_PHY_ID 0x20005ca0 #define TI_DP83620_PHY_ID 0x20005ce0 #define NS_DP83848C_PHY_ID 0x20005c90 -#define TLK10X_PHY_ID 0x2000a210 /* Registers */ #define DP83848_MICR 0x11 /* MII Interrupt Control Register */ @@ -78,7 +77,6 @@ static struct mdio_device_id __maybe_unused dp83848_tbl[] = { { TI_DP83848C_PHY_ID, 0xfffffff0 }, { NS_DP83848C_PHY_ID, 0xfffffff0 }, { TI_DP83620_PHY_ID, 0xfffffff0 }, - { TLK10X_PHY_ID, 0xfffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, dp83848_tbl); @@ -105,7 +103,6 @@ static struct phy_driver dp83848_driver[] = { DP83848_PHY_DRIVER(TI_DP83848C_PHY_ID, "TI DP83848C 10/100 Mbps PHY"), DP83848_PHY_DRIVER(NS_DP83848C_PHY_ID, "NS DP83848C 10/100 Mbps PHY"), DP83848_PHY_DRIVER(TI_DP83620_PHY_ID, "TI DP83620 10/100 Mbps PHY"), - DP83848_PHY_DRIVER(TLK10X_PHY_ID, "TI TLK10X 10/100 Mbps PHY"), }; module_phy_driver(dp83848_driver); diff --git a/drivers/net/phy/tlk10x.c b/drivers/net/phy/tlk10x.c new file mode 100644 index 0000000..1efc81e --- /dev/null +++ b/drivers/net/phy/tlk10x.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * Driver for the Texas Instruments TLK105 / TLK106 + * + * Copyright (C) 2018 NIBE Industrier AB - http://www.nibe.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/module.h> +#include <linux/phy.h> +#include <linux/of.h> + +#define TLK10X_PHY_ID 0x2000a210 + +/* Registers */ +#define TLK10X_MICR 0x11 /* MII Interrupt Control Reg */ +#define TLK10X_MISR 0x12 /* MII Interrupt Status Reg */ +#define TLK10X_REGCR 0x0d /* Register Control Register */ +#define TLK10X_ADDAR 0x0e /* Data Register */ +#define TLK10X_PWRBOCR 0xae /* Power Backoff Register */ + +/* MICR Register Fields */ +#define TLK10X_MICR_INT_OE BIT(0) /* Interrupt Output Enable */ +#define TLK10X_MICR_INTEN BIT(1) /* Interrupt Enable */ + +/* MISR Register Fields */ +#define TLK10X_MISR_RHF_INT_EN BIT(0) /* Receive Error Counter */ +#define TLK10X_MISR_FHF_INT_EN BIT(1) /* False Carrier Counter */ +#define TLK10X_MISR_ANC_INT_EN BIT(2) /* Auto-negotiation complete */ +#define TLK10X_MISR_DUP_INT_EN BIT(3) /* Duplex Status */ +#define TLK10X_MISR_SPD_INT_EN BIT(4) /* Speed status */ +#define TLK10X_MISR_LINK_INT_EN BIT(5) /* Link status */ +#define TLK10X_MISR_ED_INT_EN BIT(6) /* Energy detect */ +#define TLK10X_MISR_LQM_INT_EN BIT(7) /* Link Quality Monitor */ + +/* PWRBOCR Register Fields */ +#define TLK10X_PWRBOCR_MASK 0xe0 /* Power Backoff Mask */ + +#define TLK10X_INT_EN_MASK \ + (TLK10X_MISR_ANC_INT_EN | \ + TLK10X_MISR_DUP_INT_EN | \ + TLK10X_MISR_SPD_INT_EN | \ + TLK10X_MISR_LINK_INT_EN) + +struct tlk10x_private { + int pwrbo_level; +}; + +static int tlk10x_read(struct phy_device *phydev, int reg) +{ + if (reg & ~0x1f) { + /* Extended register */ + phy_write(phydev, TLK10X_REGCR, 0x001F); + phy_write(phydev, TLK10X_ADDAR, reg); + phy_write(phydev, TLK10X_REGCR, 0x401F); + reg = TLK10X_ADDAR; + } + + return phy_read(phydev, reg); +} + +static int tlk10x_write(struct phy_device *phydev, int reg, int val) +{ + if (reg & ~0x1f) { + /* Extended register */ + phy_write(phydev, TLK10X_REGCR, 0x001F); + phy_write(phydev, TLK10X_ADDAR, reg); + phy_write(phydev, TLK10X_REGCR, 0x401F); + reg = TLK10X_ADDAR; + } + + return phy_write(phydev, reg, val); +} + +#ifdef CONFIG_OF_MDIO +static int tlk10x_of_init(struct phy_device *phydev) +{ + struct tlk10x_private *tlk10x = phydev->priv; + struct device *dev = &phydev->mdio.dev; + struct device_node *of_node = dev->of_node; + int ret; + + if (!of_node) + return 0; + + ret = of_property_read_u32(of_node, "ti,power-back-off", + &tlk10x->pwrbo_level); + if (ret) { + dev_err(dev, "missing ti,power-back-off property"); + tlk10x->pwrbo_level = 0; + } + + return 0; +} +#else +static int tlk10x_of_init(struct phy_device *phydev) +{ + return 0; +} +#endif /* CONFIG_OF_MDIO */ + +static int tlk10x_config_init(struct phy_device *phydev) +{ + int ret, reg; + struct tlk10x_private *tlk10x; + + ret = genphy_config_init(phydev); + if (ret < 0) + return ret; + + if (!phydev->priv) { + tlk10x = devm_kzalloc(&phydev->mdio.dev, sizeof(*tlk10x), + GFP_KERNEL); + if (!tlk10x) + return -ENOMEM; + + phydev->priv = tlk10x; + ret = tlk10x_of_init(phydev); + if (ret) + return ret; + } else { + tlk10x = (struct tlk10x_private *)phydev->priv; + } + + // Power back off + if (tlk10x->pwrbo_level < 0 || tlk10x->pwrbo_level > 3) + tlk10x->pwrbo_level = 0; + reg = tlk10x_read(phydev, TLK10X_PWRBOCR); + reg = ((reg & ~TLK10X_PWRBOCR_MASK) + | (tlk10x->pwrbo_level << 6)); + ret = tlk10x_write(phydev, TLK10X_PWRBOCR, reg); + if (ret < 0) { + dev_err(&phydev->mdio.dev, + "unable to set power back-off (err=%d)\n", ret); + return ret; + } + dev_info(&phydev->mdio.dev, "power back-off set to level %d\n", + tlk10x->pwrbo_level); + + return 0; +} + +static int tlk10x_ack_interrupt(struct phy_device *phydev) +{ + int err = tlk10x_read(phydev, TLK10X_MISR); + + return err < 0 ? err : 0; +} + +static int tlk10x_config_intr(struct phy_device *phydev) +{ + int control, ret; + + control = tlk10x_read(phydev, TLK10X_MICR); + if (control < 0) + return control; + + if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { + control |= TLK10X_MICR_INT_OE; + control |= TLK10X_MICR_INTEN; + + ret = tlk10x_write(phydev, TLK10X_MISR, TLK10X_INT_EN_MASK); + if (ret < 0) + return ret; + } else { + control &= ~TLK10X_MICR_INTEN; + } + + return tlk10x_write(phydev, TLK10X_MICR, control); +} + +static struct phy_driver tlk10x_driver[] = { + { + .phy_id = TLK10X_PHY_ID, + .phy_id_mask = 0xfffffff0, + .name = "TI TLK10X 10/100 Mbps PHY", + .features = PHY_BASIC_FEATURES, + .flags = PHY_HAS_INTERRUPT, + + .config_init = tlk10x_config_init, + .soft_reset = genphy_soft_reset, + + /* IRQ related */ + .ack_interrupt = tlk10x_ack_interrupt, + .config_intr = tlk10x_config_intr, + + .suspend = genphy_suspend, + .resume = genphy_resume, + }, +}; +module_phy_driver(tlk10x_driver); + +static struct mdio_device_id __maybe_unused tlk10x_tbl[] = { + { TLK10X_PHY_ID, 0xfffffff0 }, + { } +}; +MODULE_DEVICE_TABLE(mdio, tlk10x_tbl); + +MODULE_DESCRIPTION("Texas Instruments TLK105 / TLK106 PHY driver"); +MODULE_AUTHOR("Mans Andersson <[email protected]>"); +MODULE_LICENSE("GPL"); -- 2.9.3
