diff options
Diffstat (limited to 'target/linux/realtek/patches-5.10/711-net-phy-add-an-MDIO-SMBus-library.patch')
| -rw-r--r-- | target/linux/realtek/patches-5.10/711-net-phy-add-an-MDIO-SMBus-library.patch | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/target/linux/realtek/patches-5.10/711-net-phy-add-an-MDIO-SMBus-library.patch b/target/linux/realtek/patches-5.10/711-net-phy-add-an-MDIO-SMBus-library.patch deleted file mode 100644 index 5e1053ca6c..0000000000 --- a/target/linux/realtek/patches-5.10/711-net-phy-add-an-MDIO-SMBus-library.patch +++ /dev/null @@ -1,168 +0,0 @@ -From d585c55b9f70cf9e8c66820d7efe7130c683f19e Mon Sep 17 00:00:00 2001 -From: Antoine Tenart <antoine.tenart@bootlin.com> -Date: Fri, 21 Feb 2020 11:51:27 +0100 -Subject: [PATCH 2/3] net: phy: add an MDIO SMBus library - -Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com> ---- - drivers/net/mdio/Kconfig | 11 +++++++ - drivers/net/mdio/Makefile | 1 + - drivers/net/mdio/mdio-smbus.c | 62 +++++++++++++++++++++++++++++++++++ - drivers/net/phy/Kconfig | 1 + - include/linux/mdio/mdio-i2c.h | 16 +++++++++ - 5 files changed, 91 insertions(+) - create mode 100644 drivers/net/mdio/mdio-smbus.c - ---- a/drivers/net/mdio/Kconfig -+++ b/drivers/net/mdio/Kconfig -@@ -40,6 +40,17 @@ config MDIO_SUN4I - interface units of the Allwinner SoC that have an EMAC (A10, - A12, A10s, etc.) - -+config MDIO_SMBUS -+ tristate -+ depends on I2C_SMBUS -+ help -+ Support SMBus based PHYs. This provides a MDIO bus bridged -+ to SMBus to allow PHYs connected in SMBus mode to be accessed -+ using the existing infrastructure. -+ -+ This is library mode. -+ -+ - config MDIO_XGENE - tristate "APM X-Gene SoC MDIO bus controller" - depends on ARCH_XGENE || COMPILE_TEST ---- a/drivers/net/mdio/Makefile -+++ b/drivers/net/mdio/Makefile -@@ -17,6 +17,7 @@ obj-$(CONFIG_MDIO_MOXART) += mdio-moxar - obj-$(CONFIG_MDIO_MSCC_MIIM) += mdio-mscc-miim.o - obj-$(CONFIG_MDIO_MVUSB) += mdio-mvusb.o - obj-$(CONFIG_MDIO_OCTEON) += mdio-octeon.o -+obj-$(CONFIG_MDIO_SMBUS) += mdio-smbus.o - obj-$(CONFIG_MDIO_SUN4I) += mdio-sun4i.o - obj-$(CONFIG_MDIO_THUNDER) += mdio-thunder.o - obj-$(CONFIG_MDIO_XGENE) += mdio-xgene.o ---- /dev/null -+++ b/drivers/net/mdio/mdio-smbus.c -@@ -0,0 +1,62 @@ -+// SPDX-License-Identifier: GPL-2.0-or-later -+/* -+ * MDIO SMBus bridge -+ * -+ * Copyright (C) 2020 Antoine Tenart -+ * -+ * Network PHYs can appear on SMBus when they are part of SFP modules. -+ */ -+#include <linux/i2c.h> -+#include <linux/phy.h> -+#include <linux/mdio/mdio-i2c.h> -+ -+static int smbus_mii_read(struct mii_bus *mii, int phy_id, int reg) -+{ -+ struct i2c_adapter *i2c = mii->priv; -+ union i2c_smbus_data data; -+ int ret; -+ -+ ret = i2c_smbus_xfer(i2c, i2c_mii_phy_addr(phy_id), 0, I2C_SMBUS_READ, -+ reg, I2C_SMBUS_BYTE_DATA, &data); -+ if (ret < 0) -+ return 0xff; -+ -+ return data.byte; -+} -+ -+static int smbus_mii_write(struct mii_bus *mii, int phy_id, int reg, u16 val) -+{ -+ struct i2c_adapter *i2c = mii->priv; -+ union i2c_smbus_data data; -+ int ret; -+ -+ data.byte = val; -+ -+ ret = i2c_smbus_xfer(i2c, i2c_mii_phy_addr(phy_id), 0, I2C_SMBUS_WRITE, -+ reg, I2C_SMBUS_BYTE_DATA, &data); -+ return ret < 0 ? ret : 0; -+} -+ -+struct mii_bus *mdio_smbus_alloc(struct device *parent, struct i2c_adapter *i2c) -+{ -+ struct mii_bus *mii; -+ -+ if (!i2c_check_functionality(i2c, I2C_FUNC_SMBUS_BYTE_DATA)) -+ return ERR_PTR(-EINVAL); -+ -+ mii = mdiobus_alloc(); -+ if (!mii) -+ return ERR_PTR(-ENOMEM); -+ -+ snprintf(mii->id, MII_BUS_ID_SIZE, "smbus:%s", dev_name(parent)); -+ mii->parent = parent; -+ mii->read = smbus_mii_read; -+ mii->write = smbus_mii_write; -+ mii->priv = i2c; -+ -+ return mii; -+} -+ -+MODULE_AUTHOR("Antoine Tenart"); -+MODULE_DESCRIPTION("MDIO SMBus bridge library"); -+MODULE_LICENSE("GPL"); ---- a/drivers/net/phy/Kconfig -+++ b/drivers/net/phy/Kconfig -@@ -60,6 +60,7 @@ config SFP - depends on I2C && PHYLINK - depends on HWMON || HWMON=n - select MDIO_I2C -+ select MDIO_SMBUS - - comment "Switch configuration API + drivers" - ---- a/include/linux/mdio/mdio-i2c.h -+++ b/include/linux/mdio/mdio-i2c.h -@@ -12,5 +12,21 @@ struct i2c_adapter; - struct mii_bus; - - struct mii_bus *mdio_i2c_alloc(struct device *parent, struct i2c_adapter *i2c); -+struct mii_bus *mdio_smbus_alloc(struct device *parent, struct i2c_adapter *i2c); -+ -+/* -+ * I2C bus addresses 0x50 and 0x51 are normally an EEPROM, which is -+ * specified to be present in SFP modules. These correspond with PHY -+ * addresses 16 and 17. Disallow access to these "phy" addresses. -+ */ -+static bool i2c_mii_valid_phy_id(int phy_id) -+{ -+ return phy_id != 0x10 && phy_id != 0x11; -+} -+ -+static unsigned int i2c_mii_phy_addr(int phy_id) -+{ -+ return phy_id + 0x40; -+} - - #endif ---- a/drivers/net/mdio/mdio-i2c.c -+++ b/drivers/net/mdio/mdio-i2c.c -@@ -13,21 +13,6 @@ - #include <linux/mdio/mdio-i2c.h> - #include <linux/phy.h> - --/* -- * I2C bus addresses 0x50 and 0x51 are normally an EEPROM, which is -- * specified to be present in SFP modules. These correspond with PHY -- * addresses 16 and 17. Disallow access to these "phy" addresses. -- */ --static bool i2c_mii_valid_phy_id(int phy_id) --{ -- return phy_id != 0x10 && phy_id != 0x11; --} -- --static unsigned int i2c_mii_phy_addr(int phy_id) --{ -- return phy_id + 0x40; --} -- - static int i2c_mii_read(struct mii_bus *bus, int phy_id, int reg) - { - struct i2c_adapter *i2c = bus->priv; |