From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- include/linux/mdio-bitbang.h | 50 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 include/linux/mdio-bitbang.h (limited to 'include/linux/mdio-bitbang.h') diff --git a/include/linux/mdio-bitbang.h b/include/linux/mdio-bitbang.h new file mode 100644 index 000000000..373630fe5 --- /dev/null +++ b/include/linux/mdio-bitbang.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LINUX_MDIO_BITBANG_H +#define __LINUX_MDIO_BITBANG_H + +#include + +struct module; + +struct mdiobb_ctrl; + +struct mdiobb_ops { + struct module *owner; + + /* Set the Management Data Clock high if level is one, + * low if level is zero. + */ + void (*set_mdc)(struct mdiobb_ctrl *ctrl, int level); + + /* Configure the Management Data I/O pin as an input if + * "output" is zero, or an output if "output" is one. + */ + void (*set_mdio_dir)(struct mdiobb_ctrl *ctrl, int output); + + /* Set the Management Data I/O pin high if value is one, + * low if "value" is zero. This may only be called + * when the MDIO pin is configured as an output. + */ + void (*set_mdio_data)(struct mdiobb_ctrl *ctrl, int value); + + /* Retrieve the state Management Data I/O pin. */ + int (*get_mdio_data)(struct mdiobb_ctrl *ctrl); +}; + +struct mdiobb_ctrl { + const struct mdiobb_ops *ops; + unsigned int override_op_c22; + u8 op_c22_read; + u8 op_c22_write; +}; + +int mdiobb_read(struct mii_bus *bus, int phy, int reg); +int mdiobb_write(struct mii_bus *bus, int phy, int reg, u16 val); + +/* The returned bus is not yet registered with the phy layer. */ +struct mii_bus *alloc_mdio_bitbang(struct mdiobb_ctrl *ctrl); + +/* The bus must already have been unregistered. */ +void free_mdio_bitbang(struct mii_bus *bus); + +#endif -- cgit v1.2.3