diff options
Diffstat (limited to 'kernel/include/linux/mdio-bitbang.h')
| -rw-r--r-- | kernel/include/linux/mdio-bitbang.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/kernel/include/linux/mdio-bitbang.h b/kernel/include/linux/mdio-bitbang.h new file mode 100644 index 000000000..76f52bbbb --- /dev/null +++ b/kernel/include/linux/mdio-bitbang.h @@ -0,0 +1,45 @@ +#ifndef __LINUX_MDIO_BITBANG_H +#define __LINUX_MDIO_BITBANG_H + +#include <linux/phy.h> + +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; + /* reset callback */ + int (*reset)(struct mii_bus *bus); +}; + +/* 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 |