| /* | 
 |  * Broadcom BCM7xxx internal transceivers support. | 
 |  * | 
 |  * Copyright (C) 2014-2017 Broadcom | 
 |  * | 
 |  * This program is free software; you can redistribute it and/or | 
 |  * modify it under the terms of the GNU General Public License | 
 |  * as published by the Free Software Foundation; either version | 
 |  * 2 of the License, or (at your option) any later version. | 
 |  */ | 
 |  | 
 | #include <linux/module.h> | 
 | #include <linux/phy.h> | 
 | #include <linux/delay.h> | 
 | #include "bcm-phy-lib.h" | 
 | #include <linux/bitops.h> | 
 | #include <linux/brcmphy.h> | 
 | #include <linux/mdio.h> | 
 |  | 
 | /* Broadcom BCM7xxx internal PHY registers */ | 
 |  | 
 | /* EPHY only register definitions */ | 
 | #define MII_BCM7XXX_100TX_AUX_CTL	0x10 | 
 | #define MII_BCM7XXX_100TX_FALSE_CAR	0x13 | 
 | #define MII_BCM7XXX_100TX_DISC		0x14 | 
 | #define MII_BCM7XXX_AUX_MODE		0x1d | 
 | #define  MII_BCM7XXX_64CLK_MDIO		BIT(12) | 
 | #define MII_BCM7XXX_TEST		0x1f | 
 | #define  MII_BCM7XXX_SHD_MODE_2		BIT(2) | 
 | #define MII_BCM7XXX_SHD_2_ADDR_CTRL	0xe | 
 | #define MII_BCM7XXX_SHD_2_CTRL_STAT	0xf | 
 | #define MII_BCM7XXX_SHD_2_BIAS_TRIM	0x1a | 
 | #define MII_BCM7XXX_SHD_3_AN_EEE_ADV	0x3 | 
 | #define MII_BCM7XXX_SHD_3_PCS_CTRL_2	0x6 | 
 | #define  MII_BCM7XXX_PCS_CTRL_2_DEF	0x4400 | 
 | #define MII_BCM7XXX_SHD_3_AN_STAT	0xb | 
 | #define  MII_BCM7XXX_AN_NULL_MSG_EN	BIT(0) | 
 | #define  MII_BCM7XXX_AN_EEE_EN		BIT(1) | 
 | #define MII_BCM7XXX_SHD_3_EEE_THRESH	0xe | 
 | #define  MII_BCM7XXX_EEE_THRESH_DEF	0x50 | 
 | #define MII_BCM7XXX_SHD_3_TL4		0x23 | 
 | #define  MII_BCM7XXX_TL4_RST_MSK	(BIT(2) | BIT(1)) | 
 |  | 
 | /* 28nm only register definitions */ | 
 | #define MISC_ADDR(base, channel)	base, channel | 
 |  | 
 | #define DSP_TAP10			MISC_ADDR(0x0a, 0) | 
 | #define PLL_PLLCTRL_1			MISC_ADDR(0x32, 1) | 
 | #define PLL_PLLCTRL_2			MISC_ADDR(0x32, 2) | 
 | #define PLL_PLLCTRL_4			MISC_ADDR(0x33, 0) | 
 |  | 
 | #define AFE_RXCONFIG_0			MISC_ADDR(0x38, 0) | 
 | #define AFE_RXCONFIG_1			MISC_ADDR(0x38, 1) | 
 | #define AFE_RXCONFIG_2			MISC_ADDR(0x38, 2) | 
 | #define AFE_RX_LP_COUNTER		MISC_ADDR(0x38, 3) | 
 | #define AFE_TX_CONFIG			MISC_ADDR(0x39, 0) | 
 | #define AFE_VDCA_ICTRL_0		MISC_ADDR(0x39, 1) | 
 | #define AFE_VDAC_OTHERS_0		MISC_ADDR(0x39, 3) | 
 | #define AFE_HPF_TRIM_OTHERS		MISC_ADDR(0x3a, 0) | 
 |  | 
 | struct bcm7xxx_phy_priv { | 
 | 	u64	*stats; | 
 | }; | 
 |  | 
 | static void r_rc_cal_reset(struct phy_device *phydev) | 
 | { | 
 | 	/* Reset R_CAL/RC_CAL Engine */ | 
 | 	bcm_phy_write_exp_sel(phydev, 0x00b0, 0x0010); | 
 |  | 
 | 	/* Disable Reset R_AL/RC_CAL Engine */ | 
 | 	bcm_phy_write_exp_sel(phydev, 0x00b0, 0x0000); | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_b0_afe_config_init(struct phy_device *phydev) | 
 | { | 
 | 	/* Increase VCO range to prevent unlocking problem of PLL at low | 
 | 	 * temp | 
 | 	 */ | 
 | 	bcm_phy_write_misc(phydev, PLL_PLLCTRL_1, 0x0048); | 
 |  | 
 | 	/* Change Ki to 011 */ | 
 | 	bcm_phy_write_misc(phydev, PLL_PLLCTRL_2, 0x021b); | 
 |  | 
 | 	/* Disable loading of TVCO buffer to bandgap, set bandgap trim | 
 | 	 * to 111 | 
 | 	 */ | 
 | 	bcm_phy_write_misc(phydev, PLL_PLLCTRL_4, 0x0e20); | 
 |  | 
 | 	/* Adjust bias current trim by -3 */ | 
 | 	bcm_phy_write_misc(phydev, DSP_TAP10, 0x690b); | 
 |  | 
 | 	/* Switch to CORE_BASE1E */ | 
 | 	phy_write(phydev, MII_BRCM_CORE_BASE1E, 0xd); | 
 |  | 
 | 	r_rc_cal_reset(phydev); | 
 |  | 
 | 	/* write AFE_RXCONFIG_0 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb19); | 
 |  | 
 | 	/* write AFE_RXCONFIG_1 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9a3f); | 
 |  | 
 | 	/* write AFE_RX_LP_COUNTER */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc0); | 
 |  | 
 | 	/* write AFE_HPF_TRIM_OTHERS */ | 
 | 	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x000b); | 
 |  | 
 | 	/* write AFTE_TX_CONFIG */ | 
 | 	bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x0800); | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_d0_afe_config_init(struct phy_device *phydev) | 
 | { | 
 | 	/* AFE_RXCONFIG_0 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb15); | 
 |  | 
 | 	/* AFE_RXCONFIG_1 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f); | 
 |  | 
 | 	/* AFE_RXCONFIG_2, set rCal offset for HT=0 code and LT=-2 code */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0x2003); | 
 |  | 
 | 	/* AFE_RX_LP_COUNTER, set RX bandwidth to maximum */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc0); | 
 |  | 
 | 	/* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */ | 
 | 	bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431); | 
 |  | 
 | 	/* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */ | 
 | 	bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da); | 
 |  | 
 | 	/* AFE_VDAC_OTHERS_0, set 1000BT Cidac=010 for all ports */ | 
 | 	bcm_phy_write_misc(phydev, AFE_VDAC_OTHERS_0, 0xa020); | 
 |  | 
 | 	/* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal | 
 | 	 * offset for HT=0 code | 
 | 	 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3); | 
 |  | 
 | 	/* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */ | 
 | 	phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010); | 
 |  | 
 | 	/* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */ | 
 | 	bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b); | 
 |  | 
 | 	/* Reset R_CAL/RC_CAL engine */ | 
 | 	r_rc_cal_reset(phydev); | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_e0_plus_afe_config_init(struct phy_device *phydev) | 
 | { | 
 | 	/* AFE_RXCONFIG_1, provide more margin for INL/DNL measurement */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f); | 
 |  | 
 | 	/* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */ | 
 | 	bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431); | 
 |  | 
 | 	/* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */ | 
 | 	bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da); | 
 |  | 
 | 	/* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal | 
 | 	 * offset for HT=0 code | 
 | 	 */ | 
 | 	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3); | 
 |  | 
 | 	/* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */ | 
 | 	phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010); | 
 |  | 
 | 	/* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */ | 
 | 	bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b); | 
 |  | 
 | 	/* Reset R_CAL/RC_CAL engine */ | 
 | 	r_rc_cal_reset(phydev); | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_a0_patch_afe_config_init(struct phy_device *phydev) | 
 | { | 
 | 	/* +1 RC_CAL codes for RL centering for both LT and HT conditions */ | 
 | 	bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0xd003); | 
 |  | 
 | 	/* Cut master bias current by 2% to compensate for RC_CAL offset */ | 
 | 	bcm_phy_write_misc(phydev, DSP_TAP10, 0x791b); | 
 |  | 
 | 	/* Improve hybrid leakage */ | 
 | 	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x10e3); | 
 |  | 
 | 	/* Change rx_on_tune 8 to 0xf */ | 
 | 	bcm_phy_write_misc(phydev, 0x21, 0x2, 0x87f6); | 
 |  | 
 | 	/* Change 100Tx EEE bandwidth */ | 
 | 	bcm_phy_write_misc(phydev, 0x22, 0x2, 0x017d); | 
 |  | 
 | 	/* Enable ffe zero detection for Vitesse interoperability */ | 
 | 	bcm_phy_write_misc(phydev, 0x26, 0x2, 0x0015); | 
 |  | 
 | 	r_rc_cal_reset(phydev); | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_config_init(struct phy_device *phydev) | 
 | { | 
 | 	u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags); | 
 | 	u8 patch = PHY_BRCM_7XXX_PATCH(phydev->dev_flags); | 
 | 	u8 count; | 
 | 	int ret = 0; | 
 |  | 
 | 	/* Newer devices have moved the revision information back into a | 
 | 	 * standard location in MII_PHYS_ID[23] | 
 | 	 */ | 
 | 	if (rev == 0) | 
 | 		rev = phydev->phy_id & ~phydev->drv->phy_id_mask; | 
 |  | 
 | 	pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n", | 
 | 		     phydev_name(phydev), phydev->drv->name, rev, patch); | 
 |  | 
 | 	/* Dummy read to a register to workaround an issue upon reset where the | 
 | 	 * internal inverter may not allow the first MDIO transaction to pass | 
 | 	 * the MDIO management controller and make us return 0xffff for such | 
 | 	 * reads. | 
 | 	 */ | 
 | 	phy_read(phydev, MII_BMSR); | 
 |  | 
 | 	switch (rev) { | 
 | 	case 0xa0: | 
 | 	case 0xb0: | 
 | 		ret = bcm7xxx_28nm_b0_afe_config_init(phydev); | 
 | 		break; | 
 | 	case 0xd0: | 
 | 		ret = bcm7xxx_28nm_d0_afe_config_init(phydev); | 
 | 		break; | 
 | 	case 0xe0: | 
 | 	case 0xf0: | 
 | 	/* Rev G0 introduces a roll over */ | 
 | 	case 0x10: | 
 | 		ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev); | 
 | 		break; | 
 | 	case 0x01: | 
 | 		ret = bcm7xxx_28nm_a0_patch_afe_config_init(phydev); | 
 | 		break; | 
 | 	default: | 
 | 		break; | 
 | 	} | 
 |  | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	ret = bcm_phy_downshift_get(phydev, &count); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	/* Only enable EEE if Wirespeed/downshift is disabled */ | 
 | 	ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	return bcm_phy_enable_apd(phydev, true); | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_resume(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* Re-apply workarounds coming out suspend/resume */ | 
 | 	ret = bcm7xxx_28nm_config_init(phydev); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	/* 28nm Gigabit PHYs come out of reset without any half-duplex | 
 | 	 * or "hub" compliant advertised mode, fix that. This does not | 
 | 	 * cause any problems with the PHY library since genphy_config_aneg() | 
 | 	 * gracefully handles auto-negotiated and forced modes. | 
 | 	 */ | 
 | 	return genphy_config_aneg(phydev); | 
 | } | 
 |  | 
 | static int phy_set_clr_bits(struct phy_device *dev, int location, | 
 | 					int set_mask, int clr_mask) | 
 | { | 
 | 	int v, ret; | 
 |  | 
 | 	v = phy_read(dev, location); | 
 | 	if (v < 0) | 
 | 		return v; | 
 |  | 
 | 	v &= ~clr_mask; | 
 | 	v |= set_mask; | 
 |  | 
 | 	ret = phy_write(dev, location, v); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	return v; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_ephy_01_afe_config_init(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* set shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, | 
 | 			       MII_BCM7XXX_SHD_MODE_2, 0); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* Set current trim values INT_trim = -1, Ext_trim =0 */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_BIAS_TRIM, 0x3BE0); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | 	/* Cal reset */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_TL4); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			       MII_BCM7XXX_TL4_RST_MSK, 0); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | 	/* Cal reset disable */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_TL4); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			       0, MII_BCM7XXX_TL4_RST_MSK); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | reset_shadow_mode: | 
 | 	/* reset shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0, | 
 | 			       MII_BCM7XXX_SHD_MODE_2); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | /* The 28nm EPHY does not support Clause 45 (MMD) used by bcm-phy-lib */ | 
 | static int bcm7xxx_28nm_ephy_apd_enable(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* set shadow mode 1 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST, | 
 | 			       MII_BRCM_FET_BT_SRE, 0); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* Enable auto-power down */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, | 
 | 			       MII_BRCM_FET_SHDW_AS2_APDE, 0); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* reset shadow mode 1 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST, 0, | 
 | 			       MII_BRCM_FET_BT_SRE); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_ephy_eee_enable(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* set shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, | 
 | 			       MII_BCM7XXX_SHD_MODE_2, 0); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* Advertise supported modes */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_AN_EEE_ADV); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			MDIO_EEE_100TX); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | 	/* Restore Defaults */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_PCS_CTRL_2); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			MII_BCM7XXX_PCS_CTRL_2_DEF); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_EEE_THRESH); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			MII_BCM7XXX_EEE_THRESH_DEF); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | 	/* Enable EEE autonegotiation */ | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, | 
 | 			MII_BCM7XXX_SHD_3_AN_STAT); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 | 	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, | 
 | 			(MII_BCM7XXX_AN_NULL_MSG_EN | MII_BCM7XXX_AN_EEE_EN)); | 
 | 	if (ret < 0) | 
 | 		goto reset_shadow_mode; | 
 |  | 
 | reset_shadow_mode: | 
 | 	/* reset shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0, | 
 | 			       MII_BCM7XXX_SHD_MODE_2); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* Restart autoneg */ | 
 | 	phy_write(phydev, MII_BMCR, | 
 | 		  (BMCR_SPEED100 | BMCR_ANENABLE | BMCR_ANRESTART)); | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_ephy_config_init(struct phy_device *phydev) | 
 | { | 
 | 	u8 rev = phydev->phy_id & ~phydev->drv->phy_id_mask; | 
 | 	int ret = 0; | 
 |  | 
 | 	pr_info_once("%s: %s PHY revision: 0x%02x\n", | 
 | 		     phydev_name(phydev), phydev->drv->name, rev); | 
 |  | 
 | 	/* Dummy read to a register to workaround a possible issue upon reset | 
 | 	 * where the internal inverter may not allow the first MDIO transaction | 
 | 	 * to pass the MDIO management controller and make us return 0xffff for | 
 | 	 * such reads. | 
 | 	 */ | 
 | 	phy_read(phydev, MII_BMSR); | 
 |  | 
 | 	/* Apply AFE software work-around if necessary */ | 
 | 	if (rev == 0x01) { | 
 | 		ret = bcm7xxx_28nm_ephy_01_afe_config_init(phydev); | 
 | 		if (ret) | 
 | 			return ret; | 
 | 	} | 
 |  | 
 | 	ret = bcm7xxx_28nm_ephy_eee_enable(phydev); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	return bcm7xxx_28nm_ephy_apd_enable(phydev); | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_ephy_resume(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* Re-apply workarounds coming out suspend/resume */ | 
 | 	ret = bcm7xxx_28nm_ephy_config_init(phydev); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	return genphy_config_aneg(phydev); | 
 | } | 
 |  | 
 | static int bcm7xxx_config_init(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 |  | 
 | 	/* Enable 64 clock MDIO */ | 
 | 	phy_write(phydev, MII_BCM7XXX_AUX_MODE, MII_BCM7XXX_64CLK_MDIO); | 
 | 	phy_read(phydev, MII_BCM7XXX_AUX_MODE); | 
 |  | 
 | 	/* set shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, | 
 | 			MII_BCM7XXX_SHD_MODE_2, MII_BCM7XXX_SHD_MODE_2); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	/* set iddq_clkbias */ | 
 | 	phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0F00); | 
 | 	udelay(10); | 
 |  | 
 | 	/* reset iddq_clkbias */ | 
 | 	phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0C00); | 
 |  | 
 | 	phy_write(phydev, MII_BCM7XXX_100TX_FALSE_CAR, 0x7555); | 
 |  | 
 | 	/* reset shadow mode 2 */ | 
 | 	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0, MII_BCM7XXX_SHD_MODE_2); | 
 | 	if (ret < 0) | 
 | 		return ret; | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | /* Workaround for putting the PHY in IDDQ mode, required | 
 |  * for all BCM7XXX 40nm and 65nm PHYs | 
 |  */ | 
 | static int bcm7xxx_suspend(struct phy_device *phydev) | 
 | { | 
 | 	int ret; | 
 | 	static const struct bcm7xxx_regs { | 
 | 		int reg; | 
 | 		u16 value; | 
 | 	} bcm7xxx_suspend_cfg[] = { | 
 | 		{ MII_BCM7XXX_TEST, 0x008b }, | 
 | 		{ MII_BCM7XXX_100TX_AUX_CTL, 0x01c0 }, | 
 | 		{ MII_BCM7XXX_100TX_DISC, 0x7000 }, | 
 | 		{ MII_BCM7XXX_TEST, 0x000f }, | 
 | 		{ MII_BCM7XXX_100TX_AUX_CTL, 0x20d0 }, | 
 | 		{ MII_BCM7XXX_TEST, 0x000b }, | 
 | 	}; | 
 | 	unsigned int i; | 
 |  | 
 | 	for (i = 0; i < ARRAY_SIZE(bcm7xxx_suspend_cfg); i++) { | 
 | 		ret = phy_write(phydev, | 
 | 				bcm7xxx_suspend_cfg[i].reg, | 
 | 				bcm7xxx_suspend_cfg[i].value); | 
 | 		if (ret) | 
 | 			return ret; | 
 | 	} | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_get_tunable(struct phy_device *phydev, | 
 | 				    struct ethtool_tunable *tuna, | 
 | 				    void *data) | 
 | { | 
 | 	switch (tuna->id) { | 
 | 	case ETHTOOL_PHY_DOWNSHIFT: | 
 | 		return bcm_phy_downshift_get(phydev, (u8 *)data); | 
 | 	default: | 
 | 		return -EOPNOTSUPP; | 
 | 	} | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_set_tunable(struct phy_device *phydev, | 
 | 				    struct ethtool_tunable *tuna, | 
 | 				    const void *data) | 
 | { | 
 | 	u8 count = *(u8 *)data; | 
 | 	int ret; | 
 |  | 
 | 	switch (tuna->id) { | 
 | 	case ETHTOOL_PHY_DOWNSHIFT: | 
 | 		ret = bcm_phy_downshift_set(phydev, count); | 
 | 		break; | 
 | 	default: | 
 | 		return -EOPNOTSUPP; | 
 | 	} | 
 |  | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	/* Disable EEE advertisement since this prevents the PHY | 
 | 	 * from successfully linking up, trigger auto-negotiation restart | 
 | 	 * to let the MAC decide what to do. | 
 | 	 */ | 
 | 	ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE); | 
 | 	if (ret) | 
 | 		return ret; | 
 |  | 
 | 	return genphy_restart_aneg(phydev); | 
 | } | 
 |  | 
 | static void bcm7xxx_28nm_get_phy_stats(struct phy_device *phydev, | 
 | 				       struct ethtool_stats *stats, u64 *data) | 
 | { | 
 | 	struct bcm7xxx_phy_priv *priv = phydev->priv; | 
 |  | 
 | 	bcm_phy_get_stats(phydev, priv->stats, stats, data); | 
 | } | 
 |  | 
 | static int bcm7xxx_28nm_probe(struct phy_device *phydev) | 
 | { | 
 | 	struct bcm7xxx_phy_priv *priv; | 
 |  | 
 | 	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL); | 
 | 	if (!priv) | 
 | 		return -ENOMEM; | 
 |  | 
 | 	phydev->priv = priv; | 
 |  | 
 | 	priv->stats = devm_kcalloc(&phydev->mdio.dev, | 
 | 				   bcm_phy_get_sset_count(phydev), sizeof(u64), | 
 | 				   GFP_KERNEL); | 
 | 	if (!priv->stats) | 
 | 		return -ENOMEM; | 
 |  | 
 | 	return 0; | 
 | } | 
 |  | 
 | #define BCM7XXX_28NM_GPHY(_oui, _name)					\ | 
 | {									\ | 
 | 	.phy_id		= (_oui),					\ | 
 | 	.phy_id_mask	= 0xfffffff0,					\ | 
 | 	.name		= _name,					\ | 
 | 	.features	= PHY_GBIT_FEATURES,				\ | 
 | 	.flags		= PHY_IS_INTERNAL,				\ | 
 | 	.config_init	= bcm7xxx_28nm_config_init,			\ | 
 | 	.resume		= bcm7xxx_28nm_resume,				\ | 
 | 	.get_tunable	= bcm7xxx_28nm_get_tunable,			\ | 
 | 	.set_tunable	= bcm7xxx_28nm_set_tunable,			\ | 
 | 	.get_sset_count	= bcm_phy_get_sset_count,			\ | 
 | 	.get_strings	= bcm_phy_get_strings,				\ | 
 | 	.get_stats	= bcm7xxx_28nm_get_phy_stats,			\ | 
 | 	.probe		= bcm7xxx_28nm_probe,				\ | 
 | } | 
 |  | 
 | #define BCM7XXX_28NM_EPHY(_oui, _name)					\ | 
 | {									\ | 
 | 	.phy_id		= (_oui),					\ | 
 | 	.phy_id_mask	= 0xfffffff0,					\ | 
 | 	.name		= _name,					\ | 
 | 	.features	= PHY_BASIC_FEATURES,				\ | 
 | 	.flags		= PHY_IS_INTERNAL,				\ | 
 | 	.config_init	= bcm7xxx_28nm_ephy_config_init,		\ | 
 | 	.resume		= bcm7xxx_28nm_ephy_resume,			\ | 
 | 	.get_sset_count	= bcm_phy_get_sset_count,			\ | 
 | 	.get_strings	= bcm_phy_get_strings,				\ | 
 | 	.get_stats	= bcm7xxx_28nm_get_phy_stats,			\ | 
 | 	.probe		= bcm7xxx_28nm_probe,				\ | 
 | } | 
 |  | 
 | #define BCM7XXX_40NM_EPHY(_oui, _name)					\ | 
 | {									\ | 
 | 	.phy_id         = (_oui),					\ | 
 | 	.phy_id_mask    = 0xfffffff0,					\ | 
 | 	.name           = _name,					\ | 
 | 	.features       = PHY_BASIC_FEATURES,				\ | 
 | 	.flags          = PHY_IS_INTERNAL,				\ | 
 | 	.soft_reset	= genphy_soft_reset,				\ | 
 | 	.config_init    = bcm7xxx_config_init,				\ | 
 | 	.suspend        = bcm7xxx_suspend,				\ | 
 | 	.resume         = bcm7xxx_config_init,				\ | 
 | } | 
 |  | 
 | static struct phy_driver bcm7xxx_driver[] = { | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7250, "Broadcom BCM7250"), | 
 | 	BCM7XXX_28NM_EPHY(PHY_ID_BCM7260, "Broadcom BCM7260"), | 
 | 	BCM7XXX_28NM_EPHY(PHY_ID_BCM7268, "Broadcom BCM7268"), | 
 | 	BCM7XXX_28NM_EPHY(PHY_ID_BCM7271, "Broadcom BCM7271"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7278, "Broadcom BCM7278"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7364, "Broadcom BCM7364"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7366, "Broadcom BCM7366"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM74371, "Broadcom BCM74371"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7439, "Broadcom BCM7439"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7439_2, "Broadcom BCM7439 (2)"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM7445, "Broadcom BCM7445"), | 
 | 	BCM7XXX_28NM_GPHY(PHY_ID_BCM_OMEGA, "Broadcom Omega Combo GPHY"), | 
 | 	BCM7XXX_40NM_EPHY(PHY_ID_BCM7346, "Broadcom BCM7346"), | 
 | 	BCM7XXX_40NM_EPHY(PHY_ID_BCM7362, "Broadcom BCM7362"), | 
 | 	BCM7XXX_40NM_EPHY(PHY_ID_BCM7425, "Broadcom BCM7425"), | 
 | 	BCM7XXX_40NM_EPHY(PHY_ID_BCM7429, "Broadcom BCM7429"), | 
 | 	BCM7XXX_40NM_EPHY(PHY_ID_BCM7435, "Broadcom BCM7435"), | 
 | }; | 
 |  | 
 | static struct mdio_device_id __maybe_unused bcm7xxx_tbl[] = { | 
 | 	{ PHY_ID_BCM7250, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7260, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7268, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7271, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7278, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7364, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7366, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7346, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7362, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7425, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7429, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM74371, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7439, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7435, 0xfffffff0, }, | 
 | 	{ PHY_ID_BCM7445, 0xfffffff0, }, | 
 | 	{ } | 
 | }; | 
 |  | 
 | module_phy_driver(bcm7xxx_driver); | 
 |  | 
 | MODULE_DEVICE_TABLE(mdio, bcm7xxx_tbl); | 
 |  | 
 | MODULE_DESCRIPTION("Broadcom BCM7xxx internal PHY driver"); | 
 | MODULE_LICENSE("GPL"); | 
 | MODULE_AUTHOR("Broadcom Corporation"); |