linux-hardened/include/linux/mdio-bitbang.h
Srinivas Kandagatla 64882709ef mdio-gpio: Add reset functionality to mdio-gpio driver(v2).
This patch adds phy reset functionality to mdio-gpio driver. Now
mdio_gpio_platform_data has new member as function pointer which can be
filled at the bsp level for a callback from phy infrastructure. Also the
mdio-bitbang driver fills-in the reset function of mii_bus structure.

Without this patch the bsp level code has to takecare of the reseting
PHY's on the bus, which become bit hacky for every bsp and
phy-infrastructure is ignored aswell.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-11-15 16:56:17 -05:00

45 lines
1.1 KiB
C

#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