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Message-Id: <20240727092031.1108690-1-Frank.Sae@motor-comm.com>
Date: Sat, 27 Jul 2024 02:20:31 -0700
From: "Frank.Sae" <Frank.Sae@...or-comm.com>
To: Frank.Sae@...or-comm.com,
andrew@...n.ch,
hkallweit1@...il.com,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org,
linux@...linux.org.uk
Cc: netdev@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
yuanlai.cui@...or-comm.com,
hua.sun@...or-comm.com,
xiaoyong.li@...or-comm.com,
suting.hu@...or-comm.com,
jie.han@...or-comm.com
Subject: [PATCH 2/2] net: phy: Add driver for Motorcomm yt8821 2.5G ethernet phy
Add a driver for the motorcomm yt8821 2.5G ethernet phy.
Verified the driver on
BPI-R3(with MediaTek MT7986(Filogic 830) SoC) development board,
which is developed by Guangdong Bipai Technology Co., Ltd..
On the board, yt8821 2.5G ethernet phy works in
AUTO_BX2500_SGMII or FORCE_BX2500 interface,
supports 2.5G/1000M/100M/10M speeds, and wol(magic package).
Since some functions of yt8821 are similar to YT8521
so some functions for yt8821 can be reused.
Signed-off-by: Frank.Sae <Frank.Sae@...or-comm.com>
---
drivers/net/phy/motorcomm.c | 639 +++++++++++++++++++++++++++++++++++-
1 file changed, 636 insertions(+), 3 deletions(-)
diff --git a/drivers/net/phy/motorcomm.c b/drivers/net/phy/motorcomm.c
index 7a11fdb687cc..a432b27dd849 100644
--- a/drivers/net/phy/motorcomm.c
+++ b/drivers/net/phy/motorcomm.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
- * Motorcomm 8511/8521/8531/8531S PHY driver.
+ * Motorcomm 8511/8521/8531/8531S/8821 PHY driver.
*
* Author: Peter Geis <pgwipeout@...il.com>
* Author: Frank <Frank.Sae@...or-comm.com>
@@ -16,7 +16,7 @@
#define PHY_ID_YT8521 0x0000011a
#define PHY_ID_YT8531 0x4f51e91b
#define PHY_ID_YT8531S 0x4f51e91a
-
+#define PHY_ID_YT8821 0x4f51ea19
/* YT8521/YT8531S Register Overview
* UTP Register space | FIBER Register space
* ------------------------------------------------------------
@@ -52,6 +52,15 @@
#define YTPHY_SSR_SPEED_10M 0x0
#define YTPHY_SSR_SPEED_100M 0x1
#define YTPHY_SSR_SPEED_1000M 0x2
+/* bit9 as speed_mode[2], bit15:14 as Speed_mode[1:0]
+ * Speed_mode[2:0]:
+ * 100 = 2P5G
+ * 011 = 10G
+ * 010 = 1000 Mbps
+ * 001 = 100 Mbps
+ * 000 = 10 Mbps
+ */
+#define YT8821_SSR_SPEED_2500M 0x4
#define YTPHY_SSR_DUPLEX_OFFSET 13
#define YTPHY_SSR_DUPLEX BIT(13)
#define YTPHY_SSR_PAGE_RECEIVED BIT(12)
@@ -270,12 +279,59 @@
#define YT8531_SCR_CLK_SRC_REF_25M 4
#define YT8531_SCR_CLK_SRC_SSC_25M 5
+#define YT8821_SDS_EXT_CSR_CTRL_REG 0x23
+#define YT8821_SDS_EXT_CSR_PLL_SETTING 0x8605
+#define YT8821_UTP_EXT_FFE_IPR_CTRL_REG 0x34E
+#define YT8821_UTP_EXT_FFE_SETTING 0x8080
+#define YT8821_UTP_EXT_VGA_LPF1_CAP_CTRL_REG 0x4D2
+#define YT8821_UTP_EXT_VGA_LPF1_CAP_SHT_SETTING 0x5200
+#define YT8821_UTP_EXT_VGA_LPF2_CAP_CTRL_REG 0x4D3
+#define YT8821_UTP_EXT_VGA_LPF2_CAP_SHT_SETTING 0x5200
+#define YT8821_UTP_EXT_TRACE_CTRL_REG 0x372
+#define YT8821_UTP_EXT_TRACE_LNG_MED_GAIN_THR_SETTING 0x5A3C
+#define YT8821_UTP_EXT_IPR_CTRL_REG 0x374
+#define YT8821_UTP_EXT_IPR_ALPHA_IPR_SETTING 0x7C6C
+#define YT8821_UTP_EXT_ECHO_CTRL_REG 0x336
+#define YT8821_UTP_EXT_ECHO_SETTING 0xAA0A
+#define YT8821_UTP_EXT_GAIN_CTRL_REG 0x340
+#define YT8821_UTP_EXT_AGC_MED_GAIN_SETTING 0x3022
+#define YT8821_UTP_EXT_TH_20DB_2500_CTRL_REG 0x36A
+#define YT8821_UTP_EXT_TH_20DB_2500_SETTING 0x8000
+#define YT8821_UTP_EXT_MU_COARSE_FR_CTRL_REG 0x4B3
+#define YT8821_UTP_EXT_MU_COARSE_FR_FFE_GN_DC_SETTING 0x7711
+#define YT8821_UTP_EXT_MU_FINE_FR_CTRL_REG 0x4B5
+#define YT8821_UTP_EXT_MU_FINE_FR_FFE_GN_DC_SETTING 0x2211
+#define YT8821_UTP_EXT_ANALOG_CFG7_CTRL_REG 0x56
+#define YT8821_UTP_EXT_ANALOG_CFG7_RESET 0x20
+#define YT8821_UTP_EXT_ANALOG_CFG7_PI_CLK_SEL_AFE 0x3F
+#define YT8821_UTP_EXT_VCT_CFG6_CTRL_REG 0x97
+#define YT8821_UTP_EXT_VCT_CFG6_FECHO_AMP_TH_SETTING 0x380C
+#define YT8821_UTP_EXT_TXGE_NFR_FR_THP_CTRL_REG 0x660
+#define YT8821_UTP_EXT_TXGE_NFR_FR_SETTING 0x112A
+#define YT8821_UTP_EXT_PLL_CTRL_REG 0x450
+#define YT8821_UTP_EXT_PLL_SPARE_SETTING 0xE9
+#define YT8821_UTP_EXT_DAC_IMID_CHANNEL23_CTRL_REG 0x466
+#define YT8821_UTP_EXT_DAC_IMID_CHANNEL23_SETTING 0x6464
+#define YT8821_UTP_EXT_DAC_IMID_CHANNEL01_CTRL_REG 0x467
+#define YT8821_UTP_EXT_DAC_IMID_CHANNEL01_SETTING 0x6464
+#define YT8821_UTP_EXT_DAC_IMSB_CHANNEL23_CTRL_REG 0x468
+#define YT8821_UTP_EXT_DAC_IMSB_CHANNEL23_SETTING 0x6464
+#define YT8821_UTP_EXT_DAC_IMSB_CHANNEL01_CTRL_REG 0x469
+#define YT8821_UTP_EXT_DAC_IMSB_CHANNEL01_SETTING 0x6464
/* Extended Register end */
#define YTPHY_DTS_OUTPUT_CLK_DIS 0
#define YTPHY_DTS_OUTPUT_CLK_25M 25000000
#define YTPHY_DTS_OUTPUT_CLK_125M 125000000
+#define YT8821_CHIP_MODE_AUTO_BX2500_SGMII 0
+#define YT8821_CHIP_MODE_FORCE_BX2500 1
+
+struct yt8821_priv {
+ /* chip mode: AUTO_BX2500_SGMII/FORCE_BX2500 */
+ u32 chip_mode;
+};
+
struct yt8521_priv {
/* combo_advertising is used for case of YT8521 in combo mode,
* this means that yt8521 may work in utp or fiber mode which depends
@@ -2252,6 +2308,564 @@ static int yt8521_get_features(struct phy_device *phydev)
return ret;
}
+/**
+ * yt8821_probe() - read dts to get chip mode
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_probe(struct phy_device *phydev)
+{
+ struct device_node *node = phydev->mdio.dev.of_node;
+ struct device *dev = &phydev->mdio.dev;
+ struct yt8821_priv *priv;
+ u8 chip_mode;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ phydev->priv = priv;
+
+ if (of_property_read_u8(node, "motorcomm,chip-mode", &chip_mode))
+ chip_mode = YT8821_CHIP_MODE_FORCE_BX2500;
+
+ switch (chip_mode) {
+ case YT8821_CHIP_MODE_AUTO_BX2500_SGMII:
+ priv->chip_mode = YT8821_CHIP_MODE_AUTO_BX2500_SGMII;
+ break;
+ case YT8821_CHIP_MODE_FORCE_BX2500:
+ priv->chip_mode = YT8821_CHIP_MODE_FORCE_BX2500;
+ break;
+ default:
+ phydev_warn(phydev, "chip_mode err:%d\n", chip_mode);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * yt8821_get_features - read mmd register to get 2.5G capability
+ * @phydev: target phy_device struct
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_get_features(struct phy_device *phydev)
+{
+ int val;
+
+ val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_NG_EXTABLE);
+ if (val < 0)
+ return val;
+
+ linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
+ phydev->supported,
+ val & MDIO_PMA_NG_EXTABLE_2_5GBT);
+
+ return genphy_read_abilities(phydev);
+}
+
+/**
+ * yt8821_get_rate_matching - read register to get phy chip mode
+ * @phydev: target phy_device struct
+ * @iface: PHY data interface type
+ *
+ * returns rate matching type or negative errno code
+ */
+static int yt8821_get_rate_matching(struct phy_device *phydev,
+ phy_interface_t iface)
+{
+ int val;
+
+ val = ytphy_read_ext_with_lock(phydev, YT8521_CHIP_CONFIG_REG);
+ if (val < 0)
+ return val;
+
+ if ((val & YT8521_CCR_MODE_SEL_MASK) ==
+ YT8821_CHIP_MODE_FORCE_BX2500) {
+ return RATE_MATCH_PAUSE;
+ }
+
+ return RATE_MATCH_NONE;
+}
+
+/**
+ * yt8821_aneg_done() - determines the auto negotiation result
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0(no link)or 1(utp link) or negative errno code
+ */
+static int yt8821_aneg_done(struct phy_device *phydev)
+{
+ int link;
+
+ link = yt8521_aneg_done_paged(phydev, YT8521_RSSR_UTP_SPACE);
+
+ return link;
+}
+
+/**
+ * yt8821gen_init_paged() - generic initialization according to page
+ * @phydev: a pointer to a &struct phy_device
+ * @page: The reg page(YT8521_RSSR_FIBER_SPACE/YT8521_RSSR_UTP_SPACE) to
+ * operate.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821gen_init_paged(struct phy_device *phydev, int page)
+{
+ int old_page;
+ int ret = 0;
+
+ old_page = phy_select_page(phydev, page & YT8521_RSSR_SPACE_MASK);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ if (page & YT8521_RSSR_SPACE_MASK) {
+ /* sds init */
+ ret = __phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_SDS_EXT_CSR_CTRL_REG,
+ YT8821_SDS_EXT_CSR_PLL_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+ } else {
+ /* utp init */
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_FFE_IPR_CTRL_REG,
+ YT8821_UTP_EXT_FFE_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_VGA_LPF1_CAP_CTRL_REG,
+ YT8821_UTP_EXT_VGA_LPF1_CAP_SHT_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_VGA_LPF2_CAP_CTRL_REG,
+ YT8821_UTP_EXT_VGA_LPF2_CAP_SHT_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_TRACE_CTRL_REG,
+ YT8821_UTP_EXT_TRACE_LNG_MED_GAIN_THR_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_IPR_CTRL_REG,
+ YT8821_UTP_EXT_IPR_ALPHA_IPR_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_ECHO_CTRL_REG,
+ YT8821_UTP_EXT_ECHO_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_GAIN_CTRL_REG,
+ YT8821_UTP_EXT_AGC_MED_GAIN_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_TH_20DB_2500_CTRL_REG,
+ YT8821_UTP_EXT_TH_20DB_2500_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_MU_COARSE_FR_CTRL_REG,
+ YT8821_UTP_EXT_MU_COARSE_FR_FFE_GN_DC_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_MU_FINE_FR_CTRL_REG,
+ YT8821_UTP_EXT_MU_FINE_FR_FFE_GN_DC_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_ANALOG_CFG7_CTRL_REG,
+ YT8821_UTP_EXT_ANALOG_CFG7_RESET);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_ANALOG_CFG7_CTRL_REG,
+ YT8821_UTP_EXT_ANALOG_CFG7_PI_CLK_SEL_AFE);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_VCT_CFG6_CTRL_REG,
+ YT8821_UTP_EXT_VCT_CFG6_FECHO_AMP_TH_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_TXGE_NFR_FR_THP_CTRL_REG,
+ YT8821_UTP_EXT_TXGE_NFR_FR_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev, YT8821_UTP_EXT_PLL_CTRL_REG,
+ YT8821_UTP_EXT_PLL_SPARE_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_DAC_IMID_CHANNEL23_CTRL_REG,
+ YT8821_UTP_EXT_DAC_IMID_CHANNEL23_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_DAC_IMID_CHANNEL01_CTRL_REG,
+ YT8821_UTP_EXT_DAC_IMID_CHANNEL01_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_DAC_IMSB_CHANNEL23_CTRL_REG,
+ YT8821_UTP_EXT_DAC_IMSB_CHANNEL23_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+
+ ret = ytphy_write_ext(phydev,
+ YT8821_UTP_EXT_DAC_IMSB_CHANNEL01_CTRL_REG,
+ YT8821_UTP_EXT_DAC_IMSB_CHANNEL01_SETTING);
+ if (ret < 0)
+ goto err_restore_page;
+ }
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8821gen_init() - generic initialization
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821gen_init(struct phy_device *phydev)
+{
+ int ret = 0;
+
+ ret = yt8821gen_init_paged(phydev, YT8521_RSSR_FIBER_SPACE);
+ if (ret < 0)
+ return ret;
+
+ return yt8821gen_init_paged(phydev, YT8521_RSSR_UTP_SPACE);
+}
+
+/**
+ * yt8821_auto_sleep_config() - phy auto sleep config
+ * @phydev: a pointer to a &struct phy_device
+ * @enable: true enable auto sleep, false disable auto sleep
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_auto_sleep_config(struct phy_device *phydev, bool enable)
+{
+ int old_page;
+ int ret = 0;
+
+ old_page = phy_select_page(phydev, YT8521_RSSR_UTP_SPACE);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ ret = ytphy_modify_ext(phydev,
+ YT8521_EXTREG_SLEEP_CONTROL1_REG,
+ YT8521_ESC1R_SLEEP_SW,
+ enable ? 1 : 0);
+ if (ret < 0)
+ goto err_restore_page;
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8821_soft_reset() - soft reset utp and serdes
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_soft_reset(struct phy_device *phydev)
+{
+ return ytphy_modify_ext_with_lock(phydev, YT8521_CHIP_CONFIG_REG,
+ YT8521_CCR_SW_RST, 0);
+}
+
+/**
+ * yt8821_config_init() - phy initializatioin
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_config_init(struct phy_device *phydev)
+{
+ struct yt8821_priv *priv = phydev->priv;
+ int ret, val;
+
+ phydev->irq = PHY_POLL;
+
+ val = ytphy_read_ext_with_lock(phydev, YT8521_CHIP_CONFIG_REG);
+ if (priv->chip_mode == YT8821_CHIP_MODE_AUTO_BX2500_SGMII) {
+ ret = ytphy_modify_ext_with_lock(phydev,
+ YT8521_CHIP_CONFIG_REG,
+ YT8521_CCR_MODE_SEL_MASK,
+ FIELD_PREP(YT8521_CCR_MODE_SEL_MASK, 0));
+ if (ret < 0)
+ return ret;
+
+ __assign_bit(PHY_INTERFACE_MODE_2500BASEX,
+ phydev->possible_interfaces,
+ true);
+ __assign_bit(PHY_INTERFACE_MODE_SGMII,
+ phydev->possible_interfaces,
+ true);
+
+ phydev->rate_matching = RATE_MATCH_NONE;
+ } else if (priv->chip_mode == YT8821_CHIP_MODE_FORCE_BX2500) {
+ ret = ytphy_modify_ext_with_lock(phydev,
+ YT8521_CHIP_CONFIG_REG,
+ YT8521_CCR_MODE_SEL_MASK,
+ FIELD_PREP(YT8521_CCR_MODE_SEL_MASK, 1));
+ if (ret < 0)
+ return ret;
+
+ phydev->rate_matching = RATE_MATCH_PAUSE;
+ }
+
+ ret = yt8821gen_init(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* disable auto sleep */
+ ret = yt8821_auto_sleep_config(phydev, false);
+ if (ret < 0)
+ return ret;
+
+ /* soft reset */
+ yt8821_soft_reset(phydev);
+
+ return ret;
+}
+
+/**
+ * yt8821_adjust_status() - update speed and duplex to phydev
+ * @phydev: a pointer to a &struct phy_device
+ * @val: read from YTPHY_SPECIFIC_STATUS_REG
+ */
+static void yt8821_adjust_status(struct phy_device *phydev, int val)
+{
+ int speed_mode, duplex;
+ int speed_mode_low, speed_mode_high;
+ int speed = SPEED_UNKNOWN;
+
+ duplex = FIELD_GET(YTPHY_SSR_DUPLEX, val);
+
+ speed_mode_low = FIELD_GET(GENMASK(15, 14), val);
+ speed_mode_high = FIELD_GET(BIT(9), val);
+ speed_mode = FIELD_PREP(BIT(2), speed_mode_high) |
+ FIELD_PREP(GENMASK(1, 0), speed_mode_low);
+ switch (speed_mode) {
+ case YTPHY_SSR_SPEED_10M:
+ speed = SPEED_10;
+ break;
+ case YTPHY_SSR_SPEED_100M:
+ speed = SPEED_100;
+ break;
+ case YTPHY_SSR_SPEED_1000M:
+ speed = SPEED_1000;
+ break;
+ case YT8821_SSR_SPEED_2500M:
+ speed = SPEED_2500;
+ break;
+ default:
+ speed = SPEED_UNKNOWN;
+ break;
+ }
+
+ phydev->speed = speed;
+ phydev->duplex = duplex;
+}
+
+/**
+ * yt8821_update_interface() - update interface per current speed
+ * @phydev: a pointer to a &struct phy_device
+ */
+static void yt8821_update_interface(struct phy_device *phydev)
+{
+ if (!phydev->link)
+ return;
+
+ switch (phydev->speed) {
+ case SPEED_2500:
+ phydev->interface = PHY_INTERFACE_MODE_2500BASEX;
+ break;
+ case SPEED_1000:
+ case SPEED_100:
+ case SPEED_10:
+ phydev->interface = PHY_INTERFACE_MODE_SGMII;
+ break;
+ default:
+ phydev_warn(phydev, "phy speed err:%d\n", phydev->speed);
+ break;
+ }
+}
+
+/**
+ * yt8821_read_status() - determines the negotiated speed and duplex
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_read_status(struct phy_device *phydev)
+{
+ struct yt8821_priv *priv = phydev->priv;
+ int old_page;
+ int ret = 0;
+ int link;
+ int val;
+
+ if (phydev->autoneg == AUTONEG_ENABLE) {
+ int lpadv = phy_read_mmd(phydev,
+ MDIO_MMD_AN, MDIO_AN_10GBT_STAT);
+
+ if (lpadv < 0)
+ return lpadv;
+
+ mii_10gbt_stat_mod_linkmode_lpa_t(phydev->lp_advertising,
+ lpadv);
+ }
+
+ ret = ytphy_write_ext_with_lock(phydev,
+ YT8521_REG_SPACE_SELECT_REG,
+ YT8521_RSSR_UTP_SPACE);
+ if (ret < 0)
+ return ret;
+
+ ret = genphy_read_status(phydev);
+ if (ret < 0)
+ return ret;
+
+ old_page = phy_select_page(phydev, YT8521_RSSR_UTP_SPACE);
+ if (old_page < 0)
+ goto err_restore_page;
+
+ val = __phy_read(phydev, YTPHY_SPECIFIC_STATUS_REG);
+ if (val < 0) {
+ ret = val;
+ goto err_restore_page;
+ }
+
+ link = val & YTPHY_SSR_LINK;
+ if (link)
+ yt8821_adjust_status(phydev, val);
+
+ if (link) {
+ if (phydev->link == 0)
+ phydev_info(phydev,
+ "%s, phy addr: %d, link up, mii reg 0x%x = 0x%x\n",
+ __func__, phydev->mdio.addr,
+ YTPHY_SPECIFIC_STATUS_REG,
+ (unsigned int)val);
+ phydev->link = 1;
+ } else {
+ if (phydev->link == 1)
+ phydev_info(phydev, "%s, phy addr: %d, link down\n",
+ __func__, phydev->mdio.addr);
+ phydev->link = 0;
+ }
+
+ if (priv->chip_mode == YT8821_CHIP_MODE_AUTO_BX2500_SGMII)
+ yt8821_update_interface(phydev);
+
+err_restore_page:
+ return phy_restore_page(phydev, old_page, ret);
+}
+
+/**
+ * yt8821_modify_utp_fiber_bmcr - bits modify a PHY's BMCR register
+ * @phydev: the phy_device struct
+ * @mask: bit mask of bits to clear
+ * @set: bit mask of bits to set
+ *
+ * NOTE: Convenience function which allows a PHY's BMCR register to be
+ * modified as new register value = (old register value & ~mask) | set.
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_modify_utp_fiber_bmcr(struct phy_device *phydev, u16 mask,
+ u16 set)
+{
+ int ret;
+
+ ret = yt8521_modify_bmcr_paged(phydev, YT8521_RSSR_UTP_SPACE,
+ mask, set);
+ if (ret < 0)
+ return ret;
+
+ return yt8521_modify_bmcr_paged(phydev, YT8521_RSSR_FIBER_SPACE,
+ mask, set);
+}
+
+/**
+ * yt8821_suspend() - suspend the hardware
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_suspend(struct phy_device *phydev)
+{
+ int wol_config;
+
+ wol_config = ytphy_read_ext_with_lock(phydev, YTPHY_WOL_CONFIG_REG);
+ if (wol_config < 0)
+ return wol_config;
+
+ /* if wol enable, do nothing */
+ if (wol_config & YTPHY_WCR_ENABLE)
+ return 0;
+
+ return yt8821_modify_utp_fiber_bmcr(phydev, 0, BMCR_PDOWN);
+}
+
+/**
+ * yt8821_resume() - resume the hardware
+ * @phydev: a pointer to a &struct phy_device
+ *
+ * returns 0 or negative errno code
+ */
+static int yt8821_resume(struct phy_device *phydev)
+{
+ int wol_config;
+ int ret;
+
+ /* disable auto sleep */
+ ret = yt8821_auto_sleep_config(phydev, false);
+ if (ret < 0)
+ return ret;
+
+ wol_config = ytphy_read_ext_with_lock(phydev, YTPHY_WOL_CONFIG_REG);
+ if (wol_config < 0)
+ return wol_config;
+
+ /* if wol enable, do nothing */
+ if (wol_config & YTPHY_WCR_ENABLE)
+ return 0;
+
+ return yt8821_modify_utp_fiber_bmcr(phydev, BMCR_PDOWN, 0);
+}
+
static struct phy_driver motorcomm_phy_drvs[] = {
{
PHY_ID_MATCH_EXACT(PHY_ID_YT8511),
@@ -2307,11 +2921,29 @@ static struct phy_driver motorcomm_phy_drvs[] = {
.suspend = yt8521_suspend,
.resume = yt8521_resume,
},
+ {
+ PHY_ID_MATCH_EXACT(PHY_ID_YT8821),
+ .name = "YT8821 2.5Gbps PHY",
+ .get_features = yt8821_get_features,
+ .probe = yt8821_probe,
+ .read_page = yt8521_read_page,
+ .write_page = yt8521_write_page,
+ .get_wol = ytphy_get_wol,
+ .set_wol = ytphy_set_wol,
+ .config_aneg = genphy_config_aneg,
+ .aneg_done = yt8821_aneg_done,
+ .config_init = yt8821_config_init,
+ .get_rate_matching = yt8821_get_rate_matching,
+ .read_status = yt8821_read_status,
+ .soft_reset = yt8821_soft_reset,
+ .suspend = yt8821_suspend,
+ .resume = yt8821_resume,
+ },
};
module_phy_driver(motorcomm_phy_drvs);
-MODULE_DESCRIPTION("Motorcomm 8511/8521/8531/8531S PHY driver");
+MODULE_DESCRIPTION("Motorcomm 8511/8521/8531/8531S/8821 PHY driver");
MODULE_AUTHOR("Peter Geis");
MODULE_AUTHOR("Frank");
MODULE_LICENSE("GPL");
@@ -2321,6 +2953,7 @@ static const struct mdio_device_id __maybe_unused motorcomm_tbl[] = {
{ PHY_ID_MATCH_EXACT(PHY_ID_YT8521) },
{ PHY_ID_MATCH_EXACT(PHY_ID_YT8531) },
{ PHY_ID_MATCH_EXACT(PHY_ID_YT8531S) },
+ { PHY_ID_MATCH_EXACT(PHY_ID_YT8821) },
{ /* sentinel */ }
};
--
2.25.1
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