#ifndef __BACKPORT_LINUX_MDIO_H
#define __BACKPORT_LINUX_MDIO_H
#include_next <linux/mdio.h>

#ifndef MDIO_EEE_100TX
/* EEE Supported/Advertisement/LP Advertisement registers.
 *
 * EEE capability Register (3.20), Advertisement (7.60) and
 * Link partner ability (7.61) registers have and can use the same identical
 * bit masks.
 */
#define MDIO_AN_EEE_ADV_100TX	0x0002	/* Advertise 100TX EEE cap */
#define MDIO_AN_EEE_ADV_1000T	0x0004	/* Advertise 1000T EEE cap */
/* Note: the two defines above can be potentially used by the user-land
 * and cannot remove them now.
 * So, we define the new generic MDIO_EEE_100TX and MDIO_EEE_1000T macros
 * using the previous ones (that can be considered obsolete).
 */
#define MDIO_EEE_100TX		MDIO_AN_EEE_ADV_100TX	/* 100TX EEE cap */
#define MDIO_EEE_1000T		MDIO_AN_EEE_ADV_1000T	/* 1000T EEE cap */
#define MDIO_EEE_10GT		0x0008	/* 10GT EEE cap */
#define MDIO_EEE_1000KX		0x0010	/* 1000KX EEE cap */
#define MDIO_EEE_10GKX4		0x0020	/* 10G KX4 EEE cap */
#define MDIO_EEE_10GKR		0x0040	/* 10G KR EEE cap */
#endif /* MDIO_EEE_100TX */

#if LINUX_VERSION_IS_LESS(3,7,0)
/**
 * mmd_eee_adv_to_ethtool_adv_t
 * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers
 *
 * A small helper function that translates the MMD EEE Advertisment (7.60)
 * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement
 * settings.
 */
#define mmd_eee_adv_to_ethtool_adv_t LINUX_I915_BACKPORT(mmd_eee_adv_to_ethtool_adv_t)
static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv)
{
	u32 adv = 0;

	if (eee_adv & MDIO_EEE_100TX)
		adv |= ADVERTISED_100baseT_Full;
	if (eee_adv & MDIO_EEE_1000T)
		adv |= ADVERTISED_1000baseT_Full;
	if (eee_adv & MDIO_EEE_10GT)
		adv |= ADVERTISED_10000baseT_Full;
	if (eee_adv & MDIO_EEE_1000KX)
		adv |= ADVERTISED_1000baseKX_Full;
	if (eee_adv & MDIO_EEE_10GKX4)
		adv |= ADVERTISED_10000baseKX4_Full;
	if (eee_adv & MDIO_EEE_10GKR)
		adv |= ADVERTISED_10000baseKR_Full;

	return adv;
}

#define ethtool_adv_to_mmd_eee_adv_t LINUX_I915_BACKPORT(ethtool_adv_to_mmd_eee_adv_t)
/**
 * ethtool_adv_to_mmd_eee_adv_t
 * @adv: the ethtool advertisement settings
 *
 * A small helper function that translates ethtool advertisement settings
 * to EEE advertisements for the MMD EEE Advertisement (7.60) and
 * MMD EEE Link Partner Ability (7.61) registers.
 */
static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv)
{
	u16 reg = 0;

	if (adv & ADVERTISED_100baseT_Full)
		reg |= MDIO_EEE_100TX;
	if (adv & ADVERTISED_1000baseT_Full)
		reg |= MDIO_EEE_1000T;
	if (adv & ADVERTISED_10000baseT_Full)
		reg |= MDIO_EEE_10GT;
	if (adv & ADVERTISED_1000baseKX_Full)
		reg |= MDIO_EEE_1000KX;
	if (adv & ADVERTISED_10000baseKX4_Full)
		reg |= MDIO_EEE_10GKX4;
	if (adv & ADVERTISED_10000baseKR_Full)
		reg |= MDIO_EEE_10GKR;

	return reg;
}
#endif /* LINUX_VERSION_IS_LESS(3,7,0) */

#endif /* __BACKPORT_LINUX_MDIO_H */
