On Thu, Apr 19, 2018 at 10:28 AM, Måns Andersson <mans.andersson@xxxxxxx> wrote: > From: Mans Andersson <mans.andersson@xxxxxxx> > > Add suport for the TI TLK105 and TLK106 10/100Mbit ethernet phys. > Hi Mans, Some quick notes. > 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 Missing signature. > --- > .../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. Since you are using the SPDX id, please remove the license text (which is actually wrong: it seems you have cut the v2+ version and then removed the last sentence of the first paragraph? :-). > + */ > + > +#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) { 0x1f or ~0x1f should probably have a #define name. > + /* 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) { Ditto. > + /* 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 Maybe you want the #ifdef inside. > +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)); Maybe the 6 should have a name, or maybe a bigger macro for this would clarify. > + 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); Following the style of the rest of the file, shouldn't this be: if (err < 0) return err; return 0; ? > + > + 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 <mans.andersson@xxxxxxx>"); > +MODULE_LICENSE("GPL"); Should be "GPL v2". Cheers, Miguel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
