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-rw-r--r--drivers/net/phy/bcm54140.c886
1 files changed, 886 insertions, 0 deletions
diff --git a/drivers/net/phy/bcm54140.c b/drivers/net/phy/bcm54140.c
new file mode 100644
index 0000000000..d43076592f
--- /dev/null
+++ b/drivers/net/phy/bcm54140.c
@@ -0,0 +1,886 @@
+// SPDX-License-Identifier: GPL-2.0+
+/* Broadcom BCM54140 Quad SGMII/QSGMII Copper/Fiber Gigabit PHY
+ *
+ * Copyright (c) 2020 Michael Walle <michael@walle.cc>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/brcmphy.h>
+#include <linux/hwmon.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+
+#include "bcm-phy-lib.h"
+
+/* RDB per-port registers
+ */
+#define BCM54140_RDB_ISR 0x00a /* interrupt status */
+#define BCM54140_RDB_IMR 0x00b /* interrupt mask */
+#define BCM54140_RDB_INT_LINK BIT(1) /* link status changed */
+#define BCM54140_RDB_INT_SPEED BIT(2) /* link speed change */
+#define BCM54140_RDB_INT_DUPLEX BIT(3) /* duplex mode changed */
+#define BCM54140_RDB_SPARE1 0x012 /* spare control 1 */
+#define BCM54140_RDB_SPARE1_LSLM BIT(2) /* link speed LED mode */
+#define BCM54140_RDB_SPARE2 0x014 /* spare control 2 */
+#define BCM54140_RDB_SPARE2_WS_RTRY_DIS BIT(8) /* wirespeed retry disable */
+#define BCM54140_RDB_SPARE2_WS_RTRY_LIMIT GENMASK(4, 2) /* retry limit */
+#define BCM54140_RDB_SPARE3 0x015 /* spare control 3 */
+#define BCM54140_RDB_SPARE3_BIT0 BIT(0)
+#define BCM54140_RDB_LED_CTRL 0x019 /* LED control */
+#define BCM54140_RDB_LED_CTRL_ACTLINK0 BIT(4)
+#define BCM54140_RDB_LED_CTRL_ACTLINK1 BIT(8)
+#define BCM54140_RDB_C_APWR 0x01a /* auto power down control */
+#define BCM54140_RDB_C_APWR_SINGLE_PULSE BIT(8) /* single pulse */
+#define BCM54140_RDB_C_APWR_APD_MODE_DIS 0 /* ADP disable */
+#define BCM54140_RDB_C_APWR_APD_MODE_EN 1 /* ADP enable */
+#define BCM54140_RDB_C_APWR_APD_MODE_DIS2 2 /* ADP disable */
+#define BCM54140_RDB_C_APWR_APD_MODE_EN_ANEG 3 /* ADP enable w/ aneg */
+#define BCM54140_RDB_C_APWR_APD_MODE_MASK GENMASK(6, 5)
+#define BCM54140_RDB_C_APWR_SLP_TIM_MASK BIT(4)/* sleep timer */
+#define BCM54140_RDB_C_APWR_SLP_TIM_2_7 0 /* 2.7s */
+#define BCM54140_RDB_C_APWR_SLP_TIM_5_4 1 /* 5.4s */
+#define BCM54140_RDB_C_PWR 0x02a /* copper power control */
+#define BCM54140_RDB_C_PWR_ISOLATE BIT(5) /* super isolate mode */
+#define BCM54140_RDB_C_MISC_CTRL 0x02f /* misc copper control */
+#define BCM54140_RDB_C_MISC_CTRL_WS_EN BIT(4) /* wirespeed enable */
+
+/* RDB global registers
+ */
+#define BCM54140_RDB_TOP_IMR 0x82d /* interrupt mask */
+#define BCM54140_RDB_TOP_IMR_PORT0 BIT(4)
+#define BCM54140_RDB_TOP_IMR_PORT1 BIT(5)
+#define BCM54140_RDB_TOP_IMR_PORT2 BIT(6)
+#define BCM54140_RDB_TOP_IMR_PORT3 BIT(7)
+#define BCM54140_RDB_MON_CTRL 0x831 /* monitor control */
+#define BCM54140_RDB_MON_CTRL_V_MODE BIT(3) /* voltage mode */
+#define BCM54140_RDB_MON_CTRL_SEL_MASK GENMASK(2, 1)
+#define BCM54140_RDB_MON_CTRL_SEL_TEMP 0 /* meassure temperature */
+#define BCM54140_RDB_MON_CTRL_SEL_1V0 1 /* meassure AVDDL 1.0V */
+#define BCM54140_RDB_MON_CTRL_SEL_3V3 2 /* meassure AVDDH 3.3V */
+#define BCM54140_RDB_MON_CTRL_SEL_RR 3 /* meassure all round-robin */
+#define BCM54140_RDB_MON_CTRL_PWR_DOWN BIT(0) /* power-down monitor */
+#define BCM54140_RDB_MON_TEMP_VAL 0x832 /* temperature value */
+#define BCM54140_RDB_MON_TEMP_MAX 0x833 /* temperature high thresh */
+#define BCM54140_RDB_MON_TEMP_MIN 0x834 /* temperature low thresh */
+#define BCM54140_RDB_MON_TEMP_DATA_MASK GENMASK(9, 0)
+#define BCM54140_RDB_MON_1V0_VAL 0x835 /* AVDDL 1.0V value */
+#define BCM54140_RDB_MON_1V0_MAX 0x836 /* AVDDL 1.0V high thresh */
+#define BCM54140_RDB_MON_1V0_MIN 0x837 /* AVDDL 1.0V low thresh */
+#define BCM54140_RDB_MON_1V0_DATA_MASK GENMASK(10, 0)
+#define BCM54140_RDB_MON_3V3_VAL 0x838 /* AVDDH 3.3V value */
+#define BCM54140_RDB_MON_3V3_MAX 0x839 /* AVDDH 3.3V high thresh */
+#define BCM54140_RDB_MON_3V3_MIN 0x83a /* AVDDH 3.3V low thresh */
+#define BCM54140_RDB_MON_3V3_DATA_MASK GENMASK(11, 0)
+#define BCM54140_RDB_MON_ISR 0x83b /* interrupt status */
+#define BCM54140_RDB_MON_ISR_3V3 BIT(2) /* AVDDH 3.3V alarm */
+#define BCM54140_RDB_MON_ISR_1V0 BIT(1) /* AVDDL 1.0V alarm */
+#define BCM54140_RDB_MON_ISR_TEMP BIT(0) /* temperature alarm */
+
+/* According to the datasheet the formula is:
+ * T = 413.35 - (0.49055 * bits[9:0])
+ */
+#define BCM54140_HWMON_TO_TEMP(v) (413350L - (v) * 491)
+#define BCM54140_HWMON_FROM_TEMP(v) DIV_ROUND_CLOSEST_ULL(413350L - (v), 491)
+
+/* According to the datasheet the formula is:
+ * U = bits[11:0] / 1024 * 220 / 0.2
+ *
+ * Normalized:
+ * U = bits[11:0] / 4096 * 2514
+ */
+#define BCM54140_HWMON_TO_IN_1V0(v) ((v) * 2514 >> 11)
+#define BCM54140_HWMON_FROM_IN_1V0(v) DIV_ROUND_CLOSEST_ULL(((v) << 11), 2514)
+
+/* According to the datasheet the formula is:
+ * U = bits[10:0] / 1024 * 880 / 0.7
+ *
+ * Normalized:
+ * U = bits[10:0] / 2048 * 4400
+ */
+#define BCM54140_HWMON_TO_IN_3V3(v) ((v) * 4400 >> 12)
+#define BCM54140_HWMON_FROM_IN_3V3(v) DIV_ROUND_CLOSEST_ULL(((v) << 12), 4400)
+
+#define BCM54140_HWMON_TO_IN(ch, v) ((ch) ? BCM54140_HWMON_TO_IN_3V3(v) \
+ : BCM54140_HWMON_TO_IN_1V0(v))
+#define BCM54140_HWMON_FROM_IN(ch, v) ((ch) ? BCM54140_HWMON_FROM_IN_3V3(v) \
+ : BCM54140_HWMON_FROM_IN_1V0(v))
+#define BCM54140_HWMON_IN_MASK(ch) ((ch) ? BCM54140_RDB_MON_3V3_DATA_MASK \
+ : BCM54140_RDB_MON_1V0_DATA_MASK)
+#define BCM54140_HWMON_IN_VAL_REG(ch) ((ch) ? BCM54140_RDB_MON_3V3_VAL \
+ : BCM54140_RDB_MON_1V0_VAL)
+#define BCM54140_HWMON_IN_MIN_REG(ch) ((ch) ? BCM54140_RDB_MON_3V3_MIN \
+ : BCM54140_RDB_MON_1V0_MIN)
+#define BCM54140_HWMON_IN_MAX_REG(ch) ((ch) ? BCM54140_RDB_MON_3V3_MAX \
+ : BCM54140_RDB_MON_1V0_MAX)
+#define BCM54140_HWMON_IN_ALARM_BIT(ch) ((ch) ? BCM54140_RDB_MON_ISR_3V3 \
+ : BCM54140_RDB_MON_ISR_1V0)
+
+/* This PHY has two different PHY IDs depening on its MODE_SEL pin. This
+ * pin choses between 4x SGMII and QSGMII mode:
+ * AE02_5009 4x SGMII
+ * AE02_5019 QSGMII
+ */
+#define BCM54140_PHY_ID_MASK 0xffffffe8
+
+#define BCM54140_PHY_ID_REV(phy_id) ((phy_id) & 0x7)
+#define BCM54140_REV_B0 1
+
+#define BCM54140_DEFAULT_DOWNSHIFT 5
+#define BCM54140_MAX_DOWNSHIFT 9
+
+struct bcm54140_priv {
+ int port;
+ int base_addr;
+#if IS_ENABLED(CONFIG_HWMON)
+ /* protect the alarm bits */
+ struct mutex alarm_lock;
+ u16 alarm;
+#endif
+};
+
+#if IS_ENABLED(CONFIG_HWMON)
+static umode_t bcm54140_hwmon_is_visible(const void *data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ switch (type) {
+ case hwmon_in:
+ switch (attr) {
+ case hwmon_in_min:
+ case hwmon_in_max:
+ return 0644;
+ case hwmon_in_label:
+ case hwmon_in_input:
+ case hwmon_in_alarm:
+ return 0444;
+ default:
+ return 0;
+ }
+ case hwmon_temp:
+ switch (attr) {
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ return 0644;
+ case hwmon_temp_input:
+ case hwmon_temp_alarm:
+ return 0444;
+ default:
+ return 0;
+ }
+ default:
+ return 0;
+ }
+}
+
+static int bcm54140_hwmon_read_alarm(struct device *dev, unsigned int bit,
+ long *val)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ struct bcm54140_priv *priv = phydev->priv;
+ int tmp, ret = 0;
+
+ mutex_lock(&priv->alarm_lock);
+
+ /* latch any alarm bits */
+ tmp = bcm_phy_read_rdb(phydev, BCM54140_RDB_MON_ISR);
+ if (tmp < 0) {
+ ret = tmp;
+ goto out;
+ }
+ priv->alarm |= tmp;
+
+ *val = !!(priv->alarm & bit);
+ priv->alarm &= ~bit;
+
+out:
+ mutex_unlock(&priv->alarm_lock);
+ return ret;
+}
+
+static int bcm54140_hwmon_read_temp(struct device *dev, u32 attr, long *val)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ u16 reg;
+ int tmp;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ reg = BCM54140_RDB_MON_TEMP_VAL;
+ break;
+ case hwmon_temp_min:
+ reg = BCM54140_RDB_MON_TEMP_MIN;
+ break;
+ case hwmon_temp_max:
+ reg = BCM54140_RDB_MON_TEMP_MAX;
+ break;
+ case hwmon_temp_alarm:
+ return bcm54140_hwmon_read_alarm(dev,
+ BCM54140_RDB_MON_ISR_TEMP,
+ val);
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ tmp = bcm_phy_read_rdb(phydev, reg);
+ if (tmp < 0)
+ return tmp;
+
+ *val = BCM54140_HWMON_TO_TEMP(tmp & BCM54140_RDB_MON_TEMP_DATA_MASK);
+
+ return 0;
+}
+
+static int bcm54140_hwmon_read_in(struct device *dev, u32 attr,
+ int channel, long *val)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ u16 bit, reg;
+ int tmp;
+
+ switch (attr) {
+ case hwmon_in_input:
+ reg = BCM54140_HWMON_IN_VAL_REG(channel);
+ break;
+ case hwmon_in_min:
+ reg = BCM54140_HWMON_IN_MIN_REG(channel);
+ break;
+ case hwmon_in_max:
+ reg = BCM54140_HWMON_IN_MAX_REG(channel);
+ break;
+ case hwmon_in_alarm:
+ bit = BCM54140_HWMON_IN_ALARM_BIT(channel);
+ return bcm54140_hwmon_read_alarm(dev, bit, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ tmp = bcm_phy_read_rdb(phydev, reg);
+ if (tmp < 0)
+ return tmp;
+
+ tmp &= BCM54140_HWMON_IN_MASK(channel);
+ *val = BCM54140_HWMON_TO_IN(channel, tmp);
+
+ return 0;
+}
+
+static int bcm54140_hwmon_read(struct device *dev,
+ enum hwmon_sensor_types type, u32 attr,
+ int channel, long *val)
+{
+ switch (type) {
+ case hwmon_temp:
+ return bcm54140_hwmon_read_temp(dev, attr, val);
+ case hwmon_in:
+ return bcm54140_hwmon_read_in(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const char *const bcm54140_hwmon_in_labels[] = {
+ "AVDDL",
+ "AVDDH",
+};
+
+static int bcm54140_hwmon_read_string(struct device *dev,
+ enum hwmon_sensor_types type, u32 attr,
+ int channel, const char **str)
+{
+ switch (type) {
+ case hwmon_in:
+ switch (attr) {
+ case hwmon_in_label:
+ *str = bcm54140_hwmon_in_labels[channel];
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int bcm54140_hwmon_write_temp(struct device *dev, u32 attr,
+ int channel, long val)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ u16 mask = BCM54140_RDB_MON_TEMP_DATA_MASK;
+ u16 reg;
+
+ val = clamp_val(val, BCM54140_HWMON_TO_TEMP(mask),
+ BCM54140_HWMON_TO_TEMP(0));
+
+ switch (attr) {
+ case hwmon_temp_min:
+ reg = BCM54140_RDB_MON_TEMP_MIN;
+ break;
+ case hwmon_temp_max:
+ reg = BCM54140_RDB_MON_TEMP_MAX;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return bcm_phy_modify_rdb(phydev, reg, mask,
+ BCM54140_HWMON_FROM_TEMP(val));
+}
+
+static int bcm54140_hwmon_write_in(struct device *dev, u32 attr,
+ int channel, long val)
+{
+ struct phy_device *phydev = dev_get_drvdata(dev);
+ u16 mask = BCM54140_HWMON_IN_MASK(channel);
+ u16 reg;
+
+ val = clamp_val(val, 0, BCM54140_HWMON_TO_IN(channel, mask));
+
+ switch (attr) {
+ case hwmon_in_min:
+ reg = BCM54140_HWMON_IN_MIN_REG(channel);
+ break;
+ case hwmon_in_max:
+ reg = BCM54140_HWMON_IN_MAX_REG(channel);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return bcm_phy_modify_rdb(phydev, reg, mask,
+ BCM54140_HWMON_FROM_IN(channel, val));
+}
+
+static int bcm54140_hwmon_write(struct device *dev,
+ enum hwmon_sensor_types type, u32 attr,
+ int channel, long val)
+{
+ switch (type) {
+ case hwmon_temp:
+ return bcm54140_hwmon_write_temp(dev, attr, channel, val);
+ case hwmon_in:
+ return bcm54140_hwmon_write_in(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static const struct hwmon_channel_info * const bcm54140_hwmon_info[] = {
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
+ HWMON_T_ALARM),
+ HWMON_CHANNEL_INFO(in,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM | HWMON_I_LABEL,
+ HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX |
+ HWMON_I_ALARM | HWMON_I_LABEL),
+ NULL
+};
+
+static const struct hwmon_ops bcm54140_hwmon_ops = {
+ .is_visible = bcm54140_hwmon_is_visible,
+ .read = bcm54140_hwmon_read,
+ .read_string = bcm54140_hwmon_read_string,
+ .write = bcm54140_hwmon_write,
+};
+
+static const struct hwmon_chip_info bcm54140_chip_info = {
+ .ops = &bcm54140_hwmon_ops,
+ .info = bcm54140_hwmon_info,
+};
+
+static int bcm54140_enable_monitoring(struct phy_device *phydev)
+{
+ u16 mask, set;
+
+ /* 3.3V voltage mode */
+ set = BCM54140_RDB_MON_CTRL_V_MODE;
+
+ /* select round-robin */
+ mask = BCM54140_RDB_MON_CTRL_SEL_MASK;
+ set |= FIELD_PREP(BCM54140_RDB_MON_CTRL_SEL_MASK,
+ BCM54140_RDB_MON_CTRL_SEL_RR);
+
+ /* remove power-down bit */
+ mask |= BCM54140_RDB_MON_CTRL_PWR_DOWN;
+
+ return bcm_phy_modify_rdb(phydev, BCM54140_RDB_MON_CTRL, mask, set);
+}
+
+static int bcm54140_probe_once(struct phy_device *phydev)
+{
+ struct device *hwmon;
+ int ret;
+
+ /* enable hardware monitoring */
+ ret = bcm54140_enable_monitoring(phydev);
+ if (ret)
+ return ret;
+
+ hwmon = devm_hwmon_device_register_with_info(&phydev->mdio.dev,
+ "BCM54140", phydev,
+ &bcm54140_chip_info,
+ NULL);
+ return PTR_ERR_OR_ZERO(hwmon);
+}
+#endif
+
+static int bcm54140_base_read_rdb(struct phy_device *phydev, u16 rdb)
+{
+ int ret;
+
+ phy_lock_mdio_bus(phydev);
+ ret = __phy_package_write(phydev, MII_BCM54XX_RDB_ADDR, rdb);
+ if (ret < 0)
+ goto out;
+
+ ret = __phy_package_read(phydev, MII_BCM54XX_RDB_DATA);
+
+out:
+ phy_unlock_mdio_bus(phydev);
+ return ret;
+}
+
+static int bcm54140_base_write_rdb(struct phy_device *phydev,
+ u16 rdb, u16 val)
+{
+ int ret;
+
+ phy_lock_mdio_bus(phydev);
+ ret = __phy_package_write(phydev, MII_BCM54XX_RDB_ADDR, rdb);
+ if (ret < 0)
+ goto out;
+
+ ret = __phy_package_write(phydev, MII_BCM54XX_RDB_DATA, val);
+
+out:
+ phy_unlock_mdio_bus(phydev);
+ return ret;
+}
+
+/* Under some circumstances a core PLL may not lock, this will then prevent
+ * a successful link establishment. Restart the PLL after the voltages are
+ * stable to workaround this issue.
+ */
+static int bcm54140_b0_workaround(struct phy_device *phydev)
+{
+ int spare3;
+ int ret;
+
+ spare3 = bcm_phy_read_rdb(phydev, BCM54140_RDB_SPARE3);
+ if (spare3 < 0)
+ return spare3;
+
+ spare3 &= ~BCM54140_RDB_SPARE3_BIT0;
+
+ ret = bcm_phy_write_rdb(phydev, BCM54140_RDB_SPARE3, spare3);
+ if (ret)
+ return ret;
+
+ ret = phy_modify(phydev, MII_BMCR, 0, BMCR_PDOWN);
+ if (ret)
+ return ret;
+
+ ret = phy_modify(phydev, MII_BMCR, BMCR_PDOWN, 0);
+ if (ret)
+ return ret;
+
+ spare3 |= BCM54140_RDB_SPARE3_BIT0;
+
+ return bcm_phy_write_rdb(phydev, BCM54140_RDB_SPARE3, spare3);
+}
+
+/* The BCM54140 is a quad PHY where only the first port has access to the
+ * global register. Thus we need to find out its PHY address.
+ *
+ */
+static int bcm54140_get_base_addr_and_port(struct phy_device *phydev)
+{
+ struct bcm54140_priv *priv = phydev->priv;
+ struct mii_bus *bus = phydev->mdio.bus;
+ int addr, min_addr, max_addr;
+ int step = 1;
+ u32 phy_id;
+ int tmp;
+
+ min_addr = phydev->mdio.addr;
+ max_addr = phydev->mdio.addr;
+ addr = phydev->mdio.addr;
+
+ /* We scan forward and backwards and look for PHYs which have the
+ * same phy_id like we do. Step 1 will scan forward, step 2
+ * backwards. Once we are finished, we have a min_addr and
+ * max_addr which resembles the range of PHY addresses of the same
+ * type of PHY. There is one caveat; there may be many PHYs of
+ * the same type, but we know that each PHY takes exactly 4
+ * consecutive addresses. Therefore we can deduce our offset
+ * to the base address of this quad PHY.
+ */
+
+ while (1) {
+ if (step == 3) {
+ break;
+ } else if (step == 1) {
+ max_addr = addr;
+ addr++;
+ } else {
+ min_addr = addr;
+ addr--;
+ }
+
+ if (addr < 0 || addr >= PHY_MAX_ADDR) {
+ addr = phydev->mdio.addr;
+ step++;
+ continue;
+ }
+
+ /* read the PHY id */
+ tmp = mdiobus_read(bus, addr, MII_PHYSID1);
+ if (tmp < 0)
+ return tmp;
+ phy_id = tmp << 16;
+ tmp = mdiobus_read(bus, addr, MII_PHYSID2);
+ if (tmp < 0)
+ return tmp;
+ phy_id |= tmp;
+
+ /* see if it is still the same PHY */
+ if ((phy_id & phydev->drv->phy_id_mask) !=
+ (phydev->drv->phy_id & phydev->drv->phy_id_mask)) {
+ addr = phydev->mdio.addr;
+ step++;
+ }
+ }
+
+ /* The range we get should be a multiple of four. Please note that both
+ * the min_addr and max_addr are inclusive. So we have to add one if we
+ * subtract them.
+ */
+ if ((max_addr - min_addr + 1) % 4) {
+ dev_err(&phydev->mdio.dev,
+ "Detected Quad PHY IDs %d..%d doesn't make sense.\n",
+ min_addr, max_addr);
+ return -EINVAL;
+ }
+
+ priv->port = (phydev->mdio.addr - min_addr) % 4;
+ priv->base_addr = phydev->mdio.addr - priv->port;
+
+ return 0;
+}
+
+static int bcm54140_probe(struct phy_device *phydev)
+{
+ struct bcm54140_priv *priv;
+ int ret;
+
+ priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ phydev->priv = priv;
+
+ ret = bcm54140_get_base_addr_and_port(phydev);
+ if (ret)
+ return ret;
+
+ devm_phy_package_join(&phydev->mdio.dev, phydev, priv->base_addr, 0);
+
+#if IS_ENABLED(CONFIG_HWMON)
+ mutex_init(&priv->alarm_lock);
+
+ if (phy_package_init_once(phydev)) {
+ ret = bcm54140_probe_once(phydev);
+ if (ret)
+ return ret;
+ }
+#endif
+
+ phydev_dbg(phydev, "probed (port %d, base PHY address %d)\n",
+ priv->port, priv->base_addr);
+
+ return 0;
+}
+
+static int bcm54140_config_init(struct phy_device *phydev)
+{
+ u16 reg = 0xffff;
+ int ret;
+
+ /* Apply hardware errata */
+ if (BCM54140_PHY_ID_REV(phydev->phy_id) == BCM54140_REV_B0) {
+ ret = bcm54140_b0_workaround(phydev);
+ if (ret)
+ return ret;
+ }
+
+ /* Unmask events we are interested in. */
+ reg &= ~(BCM54140_RDB_INT_DUPLEX |
+ BCM54140_RDB_INT_SPEED |
+ BCM54140_RDB_INT_LINK);
+ ret = bcm_phy_write_rdb(phydev, BCM54140_RDB_IMR, reg);
+ if (ret)
+ return ret;
+
+ /* LED1=LINKSPD[1], LED2=LINKSPD[2], LED3=LINK/ACTIVITY */
+ ret = bcm_phy_modify_rdb(phydev, BCM54140_RDB_SPARE1,
+ 0, BCM54140_RDB_SPARE1_LSLM);
+ if (ret)
+ return ret;
+
+ ret = bcm_phy_modify_rdb(phydev, BCM54140_RDB_LED_CTRL,
+ 0, BCM54140_RDB_LED_CTRL_ACTLINK0);
+ if (ret)
+ return ret;
+
+ /* disable super isolate mode */
+ return bcm_phy_modify_rdb(phydev, BCM54140_RDB_C_PWR,
+ BCM54140_RDB_C_PWR_ISOLATE, 0);
+}
+
+static irqreturn_t bcm54140_handle_interrupt(struct phy_device *phydev)
+{
+ int irq_status, irq_mask;
+
+ irq_status = bcm_phy_read_rdb(phydev, BCM54140_RDB_ISR);
+ if (irq_status < 0) {
+ phy_error(phydev);
+ return IRQ_NONE;
+ }
+
+ irq_mask = bcm_phy_read_rdb(phydev, BCM54140_RDB_IMR);
+ if (irq_mask < 0) {
+ phy_error(phydev);
+ return IRQ_NONE;
+ }
+ irq_mask = ~irq_mask;
+
+ if (!(irq_status & irq_mask))
+ return IRQ_NONE;
+
+ phy_trigger_machine(phydev);
+
+ return IRQ_HANDLED;
+}
+
+static int bcm54140_ack_intr(struct phy_device *phydev)
+{
+ int reg;
+
+ /* clear pending interrupts */
+ reg = bcm_phy_read_rdb(phydev, BCM54140_RDB_ISR);
+ if (reg < 0)
+ return reg;
+
+ return 0;
+}
+
+static int bcm54140_config_intr(struct phy_device *phydev)
+{
+ struct bcm54140_priv *priv = phydev->priv;
+ static const u16 port_to_imr_bit[] = {
+ BCM54140_RDB_TOP_IMR_PORT0, BCM54140_RDB_TOP_IMR_PORT1,
+ BCM54140_RDB_TOP_IMR_PORT2, BCM54140_RDB_TOP_IMR_PORT3,
+ };
+ int reg, err;
+
+ if (priv->port >= ARRAY_SIZE(port_to_imr_bit))
+ return -EINVAL;
+
+ reg = bcm54140_base_read_rdb(phydev, BCM54140_RDB_TOP_IMR);
+ if (reg < 0)
+ return reg;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+ err = bcm54140_ack_intr(phydev);
+ if (err)
+ return err;
+
+ reg &= ~port_to_imr_bit[priv->port];
+ err = bcm54140_base_write_rdb(phydev, BCM54140_RDB_TOP_IMR, reg);
+ } else {
+ reg |= port_to_imr_bit[priv->port];
+ err = bcm54140_base_write_rdb(phydev, BCM54140_RDB_TOP_IMR, reg);
+ if (err)
+ return err;
+
+ err = bcm54140_ack_intr(phydev);
+ }
+
+ return err;
+}
+
+static int bcm54140_get_downshift(struct phy_device *phydev, u8 *data)
+{
+ int val;
+
+ val = bcm_phy_read_rdb(phydev, BCM54140_RDB_C_MISC_CTRL);
+ if (val < 0)
+ return val;
+
+ if (!(val & BCM54140_RDB_C_MISC_CTRL_WS_EN)) {
+ *data = DOWNSHIFT_DEV_DISABLE;
+ return 0;
+ }
+
+ val = bcm_phy_read_rdb(phydev, BCM54140_RDB_SPARE2);
+ if (val < 0)
+ return val;
+
+ if (val & BCM54140_RDB_SPARE2_WS_RTRY_DIS)
+ *data = 1;
+ else
+ *data = FIELD_GET(BCM54140_RDB_SPARE2_WS_RTRY_LIMIT, val) + 2;
+
+ return 0;
+}
+
+static int bcm54140_set_downshift(struct phy_device *phydev, u8 cnt)
+{
+ u16 mask, set;
+ int ret;
+
+ if (cnt > BCM54140_MAX_DOWNSHIFT && cnt != DOWNSHIFT_DEV_DEFAULT_COUNT)
+ return -EINVAL;
+
+ if (!cnt)
+ return bcm_phy_modify_rdb(phydev, BCM54140_RDB_C_MISC_CTRL,
+ BCM54140_RDB_C_MISC_CTRL_WS_EN, 0);
+
+ if (cnt == DOWNSHIFT_DEV_DEFAULT_COUNT)
+ cnt = BCM54140_DEFAULT_DOWNSHIFT;
+
+ if (cnt == 1) {
+ mask = 0;
+ set = BCM54140_RDB_SPARE2_WS_RTRY_DIS;
+ } else {
+ mask = BCM54140_RDB_SPARE2_WS_RTRY_DIS;
+ mask |= BCM54140_RDB_SPARE2_WS_RTRY_LIMIT;
+ set = FIELD_PREP(BCM54140_RDB_SPARE2_WS_RTRY_LIMIT, cnt - 2);
+ }
+ ret = bcm_phy_modify_rdb(phydev, BCM54140_RDB_SPARE2,
+ mask, set);
+ if (ret)
+ return ret;
+
+ return bcm_phy_modify_rdb(phydev, BCM54140_RDB_C_MISC_CTRL,
+ 0, BCM54140_RDB_C_MISC_CTRL_WS_EN);
+}
+
+static int bcm54140_get_edpd(struct phy_device *phydev, u16 *tx_interval)
+{
+ int val;
+
+ val = bcm_phy_read_rdb(phydev, BCM54140_RDB_C_APWR);
+ if (val < 0)
+ return val;
+
+ switch (FIELD_GET(BCM54140_RDB_C_APWR_APD_MODE_MASK, val)) {
+ case BCM54140_RDB_C_APWR_APD_MODE_DIS:
+ case BCM54140_RDB_C_APWR_APD_MODE_DIS2:
+ *tx_interval = ETHTOOL_PHY_EDPD_DISABLE;
+ break;
+ case BCM54140_RDB_C_APWR_APD_MODE_EN:
+ case BCM54140_RDB_C_APWR_APD_MODE_EN_ANEG:
+ switch (FIELD_GET(BCM54140_RDB_C_APWR_SLP_TIM_MASK, val)) {
+ case BCM54140_RDB_C_APWR_SLP_TIM_2_7:
+ *tx_interval = 2700;
+ break;
+ case BCM54140_RDB_C_APWR_SLP_TIM_5_4:
+ *tx_interval = 5400;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int bcm54140_set_edpd(struct phy_device *phydev, u16 tx_interval)
+{
+ u16 mask, set;
+
+ mask = BCM54140_RDB_C_APWR_APD_MODE_MASK;
+ if (tx_interval == ETHTOOL_PHY_EDPD_DISABLE)
+ set = FIELD_PREP(BCM54140_RDB_C_APWR_APD_MODE_MASK,
+ BCM54140_RDB_C_APWR_APD_MODE_DIS);
+ else
+ set = FIELD_PREP(BCM54140_RDB_C_APWR_APD_MODE_MASK,
+ BCM54140_RDB_C_APWR_APD_MODE_EN_ANEG);
+
+ /* enable single pulse mode */
+ set |= BCM54140_RDB_C_APWR_SINGLE_PULSE;
+
+ /* set sleep timer */
+ mask |= BCM54140_RDB_C_APWR_SLP_TIM_MASK;
+ switch (tx_interval) {
+ case ETHTOOL_PHY_EDPD_DFLT_TX_MSECS:
+ case ETHTOOL_PHY_EDPD_DISABLE:
+ case 2700:
+ set |= BCM54140_RDB_C_APWR_SLP_TIM_2_7;
+ break;
+ case 5400:
+ set |= BCM54140_RDB_C_APWR_SLP_TIM_5_4;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return bcm_phy_modify_rdb(phydev, BCM54140_RDB_C_APWR, mask, set);
+}
+
+static int bcm54140_get_tunable(struct phy_device *phydev,
+ struct ethtool_tunable *tuna, void *data)
+{
+ switch (tuna->id) {
+ case ETHTOOL_PHY_DOWNSHIFT:
+ return bcm54140_get_downshift(phydev, data);
+ case ETHTOOL_PHY_EDPD:
+ return bcm54140_get_edpd(phydev, data);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int bcm54140_set_tunable(struct phy_device *phydev,
+ struct ethtool_tunable *tuna, const void *data)
+{
+ switch (tuna->id) {
+ case ETHTOOL_PHY_DOWNSHIFT:
+ return bcm54140_set_downshift(phydev, *(const u8 *)data);
+ case ETHTOOL_PHY_EDPD:
+ return bcm54140_set_edpd(phydev, *(const u16 *)data);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static struct phy_driver bcm54140_drivers[] = {
+ {
+ .phy_id = PHY_ID_BCM54140,
+ .phy_id_mask = BCM54140_PHY_ID_MASK,
+ .name = "Broadcom BCM54140",
+ .flags = PHY_POLL_CABLE_TEST,
+ .features = PHY_GBIT_FEATURES,
+ .config_init = bcm54140_config_init,
+ .handle_interrupt = bcm54140_handle_interrupt,
+ .config_intr = bcm54140_config_intr,
+ .probe = bcm54140_probe,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .soft_reset = genphy_soft_reset,
+ .get_tunable = bcm54140_get_tunable,
+ .set_tunable = bcm54140_set_tunable,
+ .cable_test_start = bcm_phy_cable_test_start_rdb,
+ .cable_test_get_status = bcm_phy_cable_test_get_status_rdb,
+ },
+};
+module_phy_driver(bcm54140_drivers);
+
+static struct mdio_device_id __maybe_unused bcm54140_tbl[] = {
+ { PHY_ID_BCM54140, BCM54140_PHY_ID_MASK },
+ { }
+};
+
+MODULE_AUTHOR("Michael Walle");
+MODULE_DESCRIPTION("Broadcom BCM54140 PHY driver");
+MODULE_DEVICE_TABLE(mdio, bcm54140_tbl);
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-15 12:24:26 +0000