openwrt/target/linux/lantiq/patches-4.4/0023-NET-PHY-adds-driver-fo...

538 lines
17 KiB
Diff

From 0a63ab263725c427051a8bbaa0732b749627da27 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Thu, 7 Aug 2014 18:15:36 +0200
Subject: [PATCH 23/36] NET: PHY: adds driver for lantiq PHY11G
Signed-off-by: John Crispin <blogic@openwrt.org>
---
drivers/net/phy/Kconfig | 5 +
drivers/net/phy/Makefile | 1 +
drivers/net/phy/lantiq.c | 231 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 237 insertions(+)
create mode 100644 drivers/net/phy/lantiq.c
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -202,6 +202,11 @@ config RTL8306_PHY
tristate "Driver for Realtek RTL8306S switches"
select SWCONFIG
+config LANTIQ_PHY
+ tristate "Driver for Lantiq PHYs"
+ ---help---
+ Supports the 11G and 22F PHYs.
+
config FIXED_PHY
tristate "Driver for MDIO Bus/PHY emulation with fixed speed/link PHYs"
depends on PHYLIB
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -46,6 +46,7 @@ obj-$(CONFIG_DP83848_PHY) += dp83848.o
obj-$(CONFIG_DP83867_PHY) += dp83867.o
obj-$(CONFIG_STE10XP) += ste10Xp.o
obj-$(CONFIG_MICREL_PHY) += micrel.o
+obj-$(CONFIG_LANTIQ_PHY) += lantiq.o
obj-$(CONFIG_MDIO_OCTEON) += mdio-octeon.o
obj-$(CONFIG_MICREL_KS8995MA) += spi_ks8995.o
obj-$(CONFIG_AT803X_PHY) += at803x.o
--- /dev/null
+++ b/drivers/net/phy/lantiq.c
@@ -0,0 +1,278 @@
+/*
+ * 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, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * Copyright (C) 2012 Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/of.h>
+
+#define MII_MMDCTRL 0x0d
+#define MII_MMDDATA 0x0e
+
+#define MII_VR9_11G_IMASK 0x19 /* interrupt mask */
+#define MII_VR9_11G_ISTAT 0x1a /* interrupt status */
+
+#define INT_VR9_11G_WOL BIT(15) /* Wake-On-LAN */
+#define INT_VR9_11G_ANE BIT(11) /* Auto-Neg error */
+#define INT_VR9_11G_ANC BIT(10) /* Auto-Neg complete */
+#define INT_VR9_11G_ADSC BIT(5) /* Link auto-downspeed detect */
+#define INT_VR9_11G_DXMC BIT(2) /* Duplex mode change */
+#define INT_VR9_11G_LSPC BIT(1) /* Link speed change */
+#define INT_VR9_11G_LSTC BIT(0) /* Link state change */
+#define INT_VR9_11G_MASK (INT_VR9_11G_LSTC | INT_VR9_11G_ADSC)
+
+#define ADVERTISED_MPD BIT(10) /* Multi-port device */
+
+#define MMD_DEVAD 0x1f
+#define MMD_ACTYPE_SHIFT 14
+#define MMD_ACTYPE_ADDRESS (0 << MMD_ACTYPE_SHIFT)
+#define MMD_ACTYPE_DATA (1 << MMD_ACTYPE_SHIFT)
+#define MMD_ACTYPE_DATA_PI (2 << MMD_ACTYPE_SHIFT)
+#define MMD_ACTYPE_DATA_PIWR (3 << MMD_ACTYPE_SHIFT)
+
+static __maybe_unused int vr9_gphy_mmd_read(struct phy_device *phydev,
+ u16 regnum)
+{
+ phy_write(phydev, MII_MMDCTRL, MMD_ACTYPE_ADDRESS | MMD_DEVAD);
+ phy_write(phydev, MII_MMDDATA, regnum);
+ phy_write(phydev, MII_MMDCTRL, MMD_ACTYPE_DATA | MMD_DEVAD);
+
+ return phy_read(phydev, MII_MMDDATA);
+}
+
+static __maybe_unused int vr9_gphy_mmd_write(struct phy_device *phydev,
+ u16 regnum, u16 val)
+{
+ phy_write(phydev, MII_MMDCTRL, MMD_ACTYPE_ADDRESS | MMD_DEVAD);
+ phy_write(phydev, MII_MMDDATA, regnum);
+ phy_write(phydev, MII_MMDCTRL, MMD_ACTYPE_DATA | MMD_DEVAD);
+ phy_write(phydev, MII_MMDDATA, val);
+
+ return 0;
+}
+
+#if IS_ENABLED(CONFIG_OF_MDIO)
+static int vr9_gphy_of_reg_init(struct phy_device *phydev)
+{
+ u32 tmp;
+
+ /* store the led values if one was passed by the devicetree */
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,ledch", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e0, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,ledcl", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e1, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led0h", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e2, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led0l", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e3, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led1h", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e4, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led1l", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e5, tmp);
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led2h", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e6, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led2l", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e7, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led3h", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e8, tmp);
+
+ if (!of_property_read_u32(phydev->dev.of_node, "lantiq,led3l", &tmp))
+ vr9_gphy_mmd_write(phydev, 0x1e9, tmp);
+
+ return 0;
+}
+#else
+static int vr9_gphy_of_reg_init(struct phy_device *phydev)
+{
+ return 0;
+}
+#endif /* CONFIG_OF_MDIO */
+
+static int vr9_gphy_config_init(struct phy_device *phydev)
+{
+ int err;
+
+ dev_dbg(&phydev->dev, "%s\n", __func__);
+
+ /* Mask all interrupts */
+ err = phy_write(phydev, MII_VR9_11G_IMASK, 0);
+ if (err)
+ return err;
+
+ /* Clear all pending interrupts */
+ phy_read(phydev, MII_VR9_11G_ISTAT);
+
+ vr9_gphy_mmd_write(phydev, 0x1e0, 0xc0);
+ vr9_gphy_mmd_write(phydev, 0x1e1, 0x00);
+ vr9_gphy_mmd_write(phydev, 0x1e2, 0x70);
+ vr9_gphy_mmd_write(phydev, 0x1e3, 0x03);
+ vr9_gphy_mmd_write(phydev, 0x1e4, 0x70);
+ vr9_gphy_mmd_write(phydev, 0x1e5, 0x03);
+ vr9_gphy_mmd_write(phydev, 0x1e6, 0x70);
+ vr9_gphy_mmd_write(phydev, 0x1e7, 0x03);
+ vr9_gphy_mmd_write(phydev, 0x1e8, 0x70);
+ vr9_gphy_mmd_write(phydev, 0x1e9, 0x03);
+
+ vr9_gphy_of_reg_init(phydev);
+
+ return 0;
+}
+
+static int vr9_gphy_config_aneg(struct phy_device *phydev)
+{
+ int reg, err;
+
+ /* Advertise as multi-port device */
+ reg = phy_read(phydev, MII_CTRL1000);
+ reg |= ADVERTISED_MPD;
+ err = phy_write(phydev, MII_CTRL1000, reg);
+ if (err)
+ return err;
+
+ return genphy_config_aneg(phydev);
+}
+
+static int vr9_gphy_ack_interrupt(struct phy_device *phydev)
+{
+ int reg;
+
+ /*
+ * Possible IRQ numbers:
+ * - IM3_IRL18 for GPHY0
+ * - IM3_IRL17 for GPHY1
+ *
+ * Due to a silicon bug IRQ lines are not really independent from
+ * each other. Sometimes the two lines are driven at the same time
+ * if only one GPHY core raises the interrupt.
+ */
+
+ reg = phy_read(phydev, MII_VR9_11G_ISTAT);
+
+ return (reg < 0) ? reg : 0;
+}
+
+static int vr9_gphy_did_interrupt(struct phy_device *phydev)
+{
+ int reg;
+
+ reg = phy_read(phydev, MII_VR9_11G_ISTAT);
+
+ return reg > 0;
+}
+
+static int vr9_gphy_config_intr(struct phy_device *phydev)
+{
+ int err;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ err = phy_write(phydev, MII_VR9_11G_IMASK, INT_VR9_11G_MASK);
+ else
+ err = phy_write(phydev, MII_VR9_11G_IMASK, 0);
+
+ return err;
+}
+
+static struct phy_driver lantiq_phy[] = {
+ {
+ .phy_id = 0xd565a400,
+ .phy_id_mask = 0xfffffff8,
+ .name = "Lantiq XWAY PEF7071",
+ .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause),
+ .flags = 0, /*PHY_HAS_INTERRUPT,*/
+ .config_init = vr9_gphy_config_init,
+ .config_aneg = vr9_gphy_config_aneg,
+ .read_status = genphy_read_status,
+ .ack_interrupt = vr9_gphy_ack_interrupt,
+ .did_interrupt = vr9_gphy_did_interrupt,
+ .config_intr = vr9_gphy_config_intr,
+ .driver = { .owner = THIS_MODULE },
+ }, {
+ .phy_id = 0x030260D0,
+ .phy_id_mask = 0xfffffff0,
+ .name = "Lantiq XWAY VR9 GPHY 11G v1.3",
+ .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause),
+ .flags = 0, /*PHY_HAS_INTERRUPT,*/
+ .config_init = vr9_gphy_config_init,
+ .config_aneg = vr9_gphy_config_aneg,
+ .read_status = genphy_read_status,
+ .ack_interrupt = vr9_gphy_ack_interrupt,
+ .did_interrupt = vr9_gphy_did_interrupt,
+ .config_intr = vr9_gphy_config_intr,
+ .driver = { .owner = THIS_MODULE },
+ }, {
+ .phy_id = 0xd565a408,
+ .phy_id_mask = 0xfffffff8,
+ .name = "Lantiq XWAY VR9 GPHY 11G v1.4",
+ .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause),
+ .flags = 0, /*PHY_HAS_INTERRUPT,*/
+ .config_init = vr9_gphy_config_init,
+ .config_aneg = vr9_gphy_config_aneg,
+ .read_status = genphy_read_status,
+ .ack_interrupt = vr9_gphy_ack_interrupt,
+ .did_interrupt = vr9_gphy_did_interrupt,
+ .config_intr = vr9_gphy_config_intr,
+ .driver = { .owner = THIS_MODULE },
+ }, {
+ .phy_id = 0xd565a418,
+ .phy_id_mask = 0xfffffff8,
+ .name = "Lantiq XWAY XRX PHY22F v1.4",
+ .features = (PHY_BASIC_FEATURES | SUPPORTED_Pause),
+ .flags = 0, /*PHY_HAS_INTERRUPT,*/
+ .config_init = vr9_gphy_config_init,
+ .config_aneg = vr9_gphy_config_aneg,
+ .read_status = genphy_read_status,
+ .ack_interrupt = vr9_gphy_ack_interrupt,
+ .did_interrupt = vr9_gphy_did_interrupt,
+ .config_intr = vr9_gphy_config_intr,
+ .driver = { .owner = THIS_MODULE },
+ },
+};
+
+static int __init ltq_phy_init(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(lantiq_phy); i++) {
+ int err = phy_driver_register(&lantiq_phy[i]);
+ if (err)
+ pr_err("lantiq_phy: failed to load %s\n", lantiq_phy[i].name);
+ }
+
+ return 0;
+}
+
+static void __exit ltq_phy_exit(void)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(lantiq_phy); i++)
+ phy_driver_unregister(&lantiq_phy[i]);
+}
+
+module_init(ltq_phy_init);
+module_exit(ltq_phy_exit);
+
+MODULE_DESCRIPTION("Lantiq PHY drivers");
+MODULE_AUTHOR("Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>");
+MODULE_LICENSE("GPL");
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/phy-lanitq.txt
@@ -0,0 +1,216 @@
+Lanitq PHY binding
+============================================
+
+This devicetree binding controls the lantiq ethernet phys led functionality.
+
+Example:
+ mdio@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "lantiq,xrx200-mdio";
+ phy5: ethernet-phy@5 {
+ reg = <0x1>;
+ compatible = "lantiq,phy11g", "ethernet-phy-ieee802.3-c22";
+ };
+ phy11: ethernet-phy@11 {
+ reg = <0x11>;
+ compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22";
+ lantiq,led2h = <0x00>;
+ lantiq,led2l = <0x03>;
+ };
+ phy12: ethernet-phy@12 {
+ reg = <0x12>;
+ compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22";
+ lantiq,led1h = <0x00>;
+ lantiq,led1l = <0x03>;
+ };
+ phy13: ethernet-phy@13 {
+ reg = <0x13>;
+ compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22";
+ lantiq,led2h = <0x00>;
+ lantiq,led2l = <0x03>;
+ };
+ phy14: ethernet-phy@14 {
+ reg = <0x14>;
+ compatible = "lantiq,phy22f", "ethernet-phy-ieee802.3-c22";
+ lantiq,led1h = <0x00>;
+ lantiq,led1l = <0x03>;
+ };
+ };
+
+Register Description
+============================================
+
+LEDCH:
+
+Name Hardware Reset Value
+LEDCH 0x00C5
+
+| 15 | | | | | | | 8 |
+=========================================
+| RES |
+=========================================
+
+| 7 | | | | | | | 0 |
+=========================================
+| FBF | SBF |RES | NACS |
+=========================================
+
+Field Bits Type Description
+FBF 7:6 RW Fast Blink Frequency
+ ---
+ 0x0 (00b) F02HZ 2 Hz blinking frequency
+ 0x1 (01b) F04HZ 4 Hz blinking frequency
+ 0x2 (10b) F08HZ 8 Hz blinking frequency
+ 0x3 (11b) F16HZ 16 Hz blinking frequency
+
+SBF 5:4 RW Slow Blink Frequency
+ ---
+ 0x0 (00b) F02HZ 2 Hz blinking frequency
+ 0x1 (01b) F04HZ 4 Hz blinking frequency
+ 0x2 (10b) F08HZ 8 Hz blinking frequency
+ 0x3 (11b) F16HZ 16 Hz blinking frequency
+
+NACS 2:0 RW Inverse of Scan Function
+ ---
+ 0x0 (000b) NONE No Function
+ 0x1 (001b) LINK Complex function enabled when link is up
+ 0x2 (010b) PDOWN Complex function enabled when device is powered-down
+ 0x3 (011b) EEE Complex function enabled when device is in EEE mode
+ 0x4 (100b) ANEG Complex function enabled when auto-negotiation is running
+ 0x5 (101b) ABIST Complex function enabled when analog self-test is running
+ 0x6 (110b) CDIAG Complex function enabled when cable diagnostics are running
+ 0x7 (111b) TEST Complex function enabled when test mode is running
+
+LEDCL:
+
+Name Hardware Reset Value
+LEDCL 0x0067
+
+| 15 | | | | | | | 8 |
+=========================================
+| RES |
+=========================================
+
+| 7 | | | | | | | 0 |
+=========================================
+|RES | SCAN |RES | CBLINK |
+=========================================
+
+Field Bits Type Description
+SCAN 6:4 RW Complex Scan Configuration
+ ---
+ 000 B NONE No Function
+ 001 B LINK Complex function enabled when link is up
+ 010 B PDOWN Complex function enabled when device is powered-down
+ 011 B EEE Complex function enabled when device is in EEE mode
+ 100 B ANEG Complex function enabled when auto-negotiation is running
+ 101 B ABIST Complex function enabled when analog self-test is running
+ 110 B CDIAG Complex function enabled when cable diagnostics are running
+ 111 B TEST Complex function enabled when test mode is running
+
+CBLINK 2:0 RW Complex Blinking Configuration
+ ---
+ 000 B NONE No Function
+ 001 B LINK Complex function enabled when link is up
+ 010 B PDOWN Complex function enabled when device is powered-down
+ 011 B EEE Complex function enabled when device is in EEE mode
+ 100 B ANEG Complex function enabled when auto-negotiation is running
+ 101 B ABIST Complex function enabled when analog self-test is running
+ 110 B CDIAG Complex function enabled when cable diagnostics are running
+ 111 B TEST Complex function enabled when test mode is running
+
+LEDxH:
+
+Name Hardware Reset Value
+LED0H 0x0070
+LED1H 0x0020
+LED2H 0x0040
+LED3H 0x0040
+
+| 15 | | | | | | | 8 |
+=========================================
+| RES |
+=========================================
+
+| 7 | | | | | | | 0 |
+=========================================
+| CON | BLINKF |
+=========================================
+
+Field Bits Type Description
+CON 7:4 RW Constant On Configuration
+ ---
+ 0x0 (0000b) NONE LED does not light up constantly
+ 0x1 (0001b) LINK10 LED is on when link is 10 Mbit/s
+ 0x2 (0010b) LINK100 LED is on when link is 100 Mbit/s
+ 0x3 (0011b) LINK10X LED is on when link is 10/100 Mbit/s
+ 0x4 (0100b) LINK1000 LED is on when link is 1000 Mbit/s
+ 0x5 (0101b) LINK10_0 LED is on when link is 10/1000 Mbit/s
+ 0x6 (0110b) LINK100X LED is on when link is 100/1000 Mbit/s
+ 0x7 (0111b) LINK10XX LED is on when link is 10/100/1000 Mbit/s
+ 0x8 (1000b) PDOWN LED is on when device is powered-down
+ 0x9 (1001b) EEE LED is on when device is in EEE mode
+ 0xA (1010b) ANEG LED is on when auto-negotiation is running
+ 0xB (1011b) ABIST LED is on when analog self-test is running
+ 0xC (1100b) CDIAG LED is on when cable diagnostics are running
+
+BLINKF 3:0 RW Fast Blinking Configuration
+ ---
+ 0x0 (0000b) NONE No Blinking
+ 0x1 (0001b) LINK10 Blink when link is 10 Mbit/s
+ 0x2 (0010b) LINK100 Blink when link is 100 Mbit/s
+ 0x3 (0011b) LINK10X Blink when link is 10/100 Mbit/s
+ 0x4 (0100b) LINK1000 Blink when link is 1000 Mbit/s
+ 0x5 (0101b) LINK10_0 Blink when link is 10/1000 Mbit/s
+ 0x6 (0110b) LINK100X Blink when link is 100/1000 Mbit/s
+ 0x7 (0111b) LINK10XX Blink when link is 10/100/1000 Mbit/s
+ 0x8 (1000b) PDOWN Blink when device is powered-down
+ 0x9 (1001b) EEE Blink when device is in EEE mode
+ 0xA (1010b) ANEG Blink when auto-negotiation is running
+ 0xB (1011b) ABIST Blink when analog self-test is running
+ 0xC (1100b) CDIAG Blink when cable diagnostics are running
+
+LEDxL:
+
+Name Hardware Reset Value
+LED0L 0x0003
+LED1L 0x0000
+LED2L 0x0000
+LED3L 0x0020
+
+| 15 | | | | | | | 8 |
+=========================================
+| RES |
+=========================================
+
+| 7 | | | | | | | 0 |
+=========================================
+| BLINKS | PULSE |
+=========================================
+
+Field Bits Type Description
+BLINKS 7:4 RW Slow Blinkin Configuration
+ ---
+ 0x0 (0000b) NONE No Blinking
+ 0x1 (0001b) LINK10 Blink when link is 10 Mbit/s
+ 0x2 (0010b) LINK100 Blink when link is 100 Mbit/s
+ 0x3 (0011b) LINK10X Blink when link is 10/100 Mbit/s
+ 0x4 (0100b) LINK1000 Blink when link is 1000 Mbit/s
+ 0x5 (0101b) LINK10_0 Blink when link is 10/1000 Mbit/s
+ 0x6 (0110b) LINK100X Blink when link is 100/1000 Mbit/s
+ 0x7 (0111b) LINK10XX Blink when link is 10/100/1000 Mbit/s
+ 0x8 (1000b) PDOWN Blink when device is powered-down
+ 0x9 (1001b) EEE Blink when device is in EEE mode
+ 0xA (1010b) ANEG Blink when auto-negotiation is running
+ 0xB (1011b) ABIST Blink when analog self-test is running
+ 0xC (1100b) CDIAG Blink when cable diagnostics are runningning
+
+PULSE 3:0 RW Pulsing Configuration
+ The pulse field is a mask field by which certain events can be combined
+ ---
+ 0x0 (0000b) NONE No pulsing
+ 0x1 (0001b) TXACT Transmit activity
+ 0x2 (0010b) RXACT Receive activity
+ 0x4 (0100b) COL Collision
+ 0x8 (1000b) RES Reserved