Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1834 insertions, 0 deletions

diff --git a/drivers/net/ethernet/microchip/lan743x_ptp.c b/drivers/net/ethernet/microchip/lan743x_ptp.c
new file mode 100644
index 000000000..da3ea905a
--- /dev/null
+++ b/drivers/net/ethernet/microchip/lan743x_ptp.c
@@ -0,0 +1,1834 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2018 Microchip Technology Inc. */
+
+#include <linux/netdevice.h>
+
+#include <linux/ptp_clock_kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/net_tstamp.h>
+#include "lan743x_main.h"
+
+#include "lan743x_ptp.h"
+
+#define LAN743X_LED0_ENABLE		20	/* LED0 offset in HW_CFG */
+#define LAN743X_LED_ENABLE(pin)		BIT(LAN743X_LED0_ENABLE + (pin))
+
+#define LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB		(31249999)
+#define LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM	(2047999934)
+
+static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter);
+static void lan743x_ptp_enable(struct lan743x_adapter *adapter);
+static void lan743x_ptp_disable(struct lan743x_adapter *adapter);
+static void lan743x_ptp_reset(struct lan743x_adapter *adapter);
+static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
+				  u32 seconds, u32 nano_seconds,
+				  u32 sub_nano_seconds);
+
+static int lan743x_get_channel(u32 ch_map)
+{
+	int idx;
+
+	for (idx = 0; idx < 32; idx++) {
+		if (ch_map & (0x1 << idx))
+			return idx;
+	}
+
+	return -EINVAL;
+}
+
+int lan743x_gpio_init(struct lan743x_adapter *adapter)
+{
+	struct lan743x_gpio *gpio = &adapter->gpio;
+
+	spin_lock_init(&gpio->gpio_lock);
+
+	gpio->gpio_cfg0 = 0; /* set all direction to input, data = 0 */
+	gpio->gpio_cfg1 = 0x0FFF0000;/* disable all gpio, set to open drain */
+	gpio->gpio_cfg2 = 0;/* set all to 1588 low polarity level */
+	gpio->gpio_cfg3 = 0;/* disable all 1588 output */
+	lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+	lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+	lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
+	lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
+
+	return 0;
+}
+
+static void lan743x_ptp_wait_till_cmd_done(struct lan743x_adapter *adapter,
+					   u32 bit_mask)
+{
+	int timeout = 1000;
+	u32 data = 0;
+
+	while (timeout &&
+	       (data = (lan743x_csr_read(adapter, PTP_CMD_CTL) &
+	       bit_mask))) {
+		usleep_range(1000, 20000);
+		timeout--;
+	}
+	if (data) {
+		netif_err(adapter, drv, adapter->netdev,
+			  "timeout waiting for cmd to be done, cmd = 0x%08X\n",
+			  bit_mask);
+	}
+}
+
+static void lan743x_ptp_tx_ts_enqueue_ts(struct lan743x_adapter *adapter,
+					 u32 seconds, u32 nano_seconds,
+					 u32 header)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	spin_lock_bh(&ptp->tx_ts_lock);
+	if (ptp->tx_ts_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+		ptp->tx_ts_seconds_queue[ptp->tx_ts_queue_size] = seconds;
+		ptp->tx_ts_nseconds_queue[ptp->tx_ts_queue_size] = nano_seconds;
+		ptp->tx_ts_header_queue[ptp->tx_ts_queue_size] = header;
+		ptp->tx_ts_queue_size++;
+	} else {
+		netif_err(adapter, drv, adapter->netdev,
+			  "tx ts queue overflow\n");
+	}
+	spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+static void lan743x_ptp_tx_ts_complete(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	struct skb_shared_hwtstamps tstamps;
+	u32 header, nseconds, seconds;
+	bool ignore_sync = false;
+	struct sk_buff *skb;
+	int c, i;
+
+	spin_lock_bh(&ptp->tx_ts_lock);
+	c = ptp->tx_ts_skb_queue_size;
+
+	if (c > ptp->tx_ts_queue_size)
+		c = ptp->tx_ts_queue_size;
+	if (c <= 0)
+		goto done;
+
+	for (i = 0; i < c; i++) {
+		ignore_sync = ((ptp->tx_ts_ignore_sync_queue &
+				BIT(i)) != 0);
+		skb = ptp->tx_ts_skb_queue[i];
+		nseconds = ptp->tx_ts_nseconds_queue[i];
+		seconds = ptp->tx_ts_seconds_queue[i];
+		header = ptp->tx_ts_header_queue[i];
+
+		memset(&tstamps, 0, sizeof(tstamps));
+		tstamps.hwtstamp = ktime_set(seconds, nseconds);
+		if (!ignore_sync ||
+		    ((header & PTP_TX_MSG_HEADER_MSG_TYPE_) !=
+		    PTP_TX_MSG_HEADER_MSG_TYPE_SYNC_))
+			skb_tstamp_tx(skb, &tstamps);
+
+		dev_kfree_skb(skb);
+
+		ptp->tx_ts_skb_queue[i] = NULL;
+		ptp->tx_ts_seconds_queue[i] = 0;
+		ptp->tx_ts_nseconds_queue[i] = 0;
+		ptp->tx_ts_header_queue[i] = 0;
+	}
+
+	/* shift queue */
+	ptp->tx_ts_ignore_sync_queue >>= c;
+	for (i = c; i < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS; i++) {
+		ptp->tx_ts_skb_queue[i - c] = ptp->tx_ts_skb_queue[i];
+		ptp->tx_ts_seconds_queue[i - c] = ptp->tx_ts_seconds_queue[i];
+		ptp->tx_ts_nseconds_queue[i - c] = ptp->tx_ts_nseconds_queue[i];
+		ptp->tx_ts_header_queue[i - c] = ptp->tx_ts_header_queue[i];
+
+		ptp->tx_ts_skb_queue[i] = NULL;
+		ptp->tx_ts_seconds_queue[i] = 0;
+		ptp->tx_ts_nseconds_queue[i] = 0;
+		ptp->tx_ts_header_queue[i] = 0;
+	}
+	ptp->tx_ts_skb_queue_size -= c;
+	ptp->tx_ts_queue_size -= c;
+done:
+	ptp->pending_tx_timestamps -= c;
+	spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+static int lan743x_ptp_reserve_event_ch(struct lan743x_adapter *adapter,
+					int event_channel)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int result = -ENODEV;
+
+	mutex_lock(&ptp->command_lock);
+	if (!(test_bit(event_channel, &ptp->used_event_ch))) {
+		ptp->used_event_ch |= BIT(event_channel);
+		result = event_channel;
+	} else {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "attempted to reserved a used event_channel = %d\n",
+			   event_channel);
+	}
+	mutex_unlock(&ptp->command_lock);
+	return result;
+}
+
+static void lan743x_ptp_release_event_ch(struct lan743x_adapter *adapter,
+					 int event_channel)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+	if (test_bit(event_channel, &ptp->used_event_ch)) {
+		ptp->used_event_ch &= ~BIT(event_channel);
+	} else {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "attempted release on a not used event_channel = %d\n",
+			   event_channel);
+	}
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
+				  u32 *seconds, u32 *nano_seconds,
+				  u32 *sub_nano_seconds);
+static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter,
+				     u32 *sec, u32 *nsec, u32 *sub_nsec);
+static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
+				   s64 time_step_ns);
+
+static void lan743x_led_mux_enable(struct lan743x_adapter *adapter,
+				   int pin, bool enable)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	if (ptp->leds_multiplexed &&
+	    ptp->led_enabled[pin]) {
+		u32 val = lan743x_csr_read(adapter, HW_CFG);
+
+		if (enable)
+			val |= LAN743X_LED_ENABLE(pin);
+		else
+			val &= ~LAN743X_LED_ENABLE(pin);
+
+		lan743x_csr_write(adapter, HW_CFG, val);
+	}
+}
+
+static void lan743x_led_mux_save(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
+
+	if (id_rev == ID_REV_ID_LAN7430_) {
+		int i;
+		u32 val = lan743x_csr_read(adapter, HW_CFG);
+
+		for (i = 0; i < LAN7430_N_LED; i++) {
+			bool led_enabled = (val & LAN743X_LED_ENABLE(i)) != 0;
+
+			ptp->led_enabled[i] = led_enabled;
+		}
+		ptp->leds_multiplexed = true;
+	} else {
+		ptp->leds_multiplexed = false;
+	}
+}
+
+static void lan743x_led_mux_restore(struct lan743x_adapter *adapter)
+{
+	u32 id_rev = adapter->csr.id_rev & ID_REV_ID_MASK_;
+
+	if (id_rev == ID_REV_ID_LAN7430_) {
+		int i;
+
+		for (i = 0; i < LAN7430_N_LED; i++)
+			lan743x_led_mux_enable(adapter, i, true);
+	}
+}
+
+static int lan743x_gpio_rsrv_ptp_out(struct lan743x_adapter *adapter,
+				     int pin, int event_channel)
+{
+	struct lan743x_gpio *gpio = &adapter->gpio;
+	unsigned long irq_flags = 0;
+	int bit_mask = BIT(pin);
+	int ret = -EBUSY;
+
+	spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
+
+	if (!(gpio->used_bits & bit_mask)) {
+		gpio->used_bits |= bit_mask;
+		gpio->output_bits |= bit_mask;
+		gpio->ptp_bits |= bit_mask;
+
+		/* assign pin to GPIO function */
+		lan743x_led_mux_enable(adapter, pin, false);
+
+		/* set as output, and zero initial value */
+		gpio->gpio_cfg0 |= GPIO_CFG0_GPIO_DIR_BIT_(pin);
+		gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin);
+		lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+
+		/* enable gpio, and set buffer type to push pull */
+		gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOEN_BIT_(pin);
+		gpio->gpio_cfg1 |= GPIO_CFG1_GPIOBUF_BIT_(pin);
+		lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+
+		/* set 1588 polarity to high */
+		gpio->gpio_cfg2 |= GPIO_CFG2_1588_POL_BIT_(pin);
+		lan743x_csr_write(adapter, GPIO_CFG2, gpio->gpio_cfg2);
+
+		if (event_channel == 0) {
+			/* use channel A */
+			gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_CH_SEL_BIT_(pin);
+		} else {
+			/* use channel B */
+			gpio->gpio_cfg3 |= GPIO_CFG3_1588_CH_SEL_BIT_(pin);
+		}
+		gpio->gpio_cfg3 |= GPIO_CFG3_1588_OE_BIT_(pin);
+		lan743x_csr_write(adapter, GPIO_CFG3, gpio->gpio_cfg3);
+
+		ret = pin;
+	}
+	spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
+	return ret;
+}
+
+static void lan743x_gpio_release(struct lan743x_adapter *adapter, int pin)
+{
+	struct lan743x_gpio *gpio = &adapter->gpio;
+	unsigned long irq_flags = 0;
+	int bit_mask = BIT(pin);
+
+	spin_lock_irqsave(&gpio->gpio_lock, irq_flags);
+	if (gpio->used_bits & bit_mask) {
+		gpio->used_bits &= ~bit_mask;
+		if (gpio->output_bits & bit_mask) {
+			gpio->output_bits &= ~bit_mask;
+
+			if (gpio->ptp_bits & bit_mask) {
+				gpio->ptp_bits &= ~bit_mask;
+				/* disable ptp output */
+				gpio->gpio_cfg3 &= ~GPIO_CFG3_1588_OE_BIT_(pin);
+				lan743x_csr_write(adapter, GPIO_CFG3,
+						  gpio->gpio_cfg3);
+			}
+			/* release gpio output */
+
+			/* disable gpio */
+			gpio->gpio_cfg1 |= GPIO_CFG1_GPIOEN_BIT_(pin);
+			gpio->gpio_cfg1 &= ~GPIO_CFG1_GPIOBUF_BIT_(pin);
+			lan743x_csr_write(adapter, GPIO_CFG1, gpio->gpio_cfg1);
+
+			/* reset back to input */
+			gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DIR_BIT_(pin);
+			gpio->gpio_cfg0 &= ~GPIO_CFG0_GPIO_DATA_BIT_(pin);
+			lan743x_csr_write(adapter, GPIO_CFG0, gpio->gpio_cfg0);
+
+			/* assign pin to original function */
+			lan743x_led_mux_enable(adapter, pin, true);
+		}
+	}
+	spin_unlock_irqrestore(&gpio->gpio_lock, irq_flags);
+}
+
+static int lan743x_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+	u32 lan743x_rate_adj = 0;
+	bool positive = true;
+	u64 u64_delta = 0;
+
+	if ((scaled_ppm < (-LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM)) ||
+	    scaled_ppm > LAN743X_PTP_MAX_FINE_ADJ_IN_SCALED_PPM) {
+		return -EINVAL;
+	}
+	if (scaled_ppm > 0) {
+		u64_delta = (u64)scaled_ppm;
+		positive = true;
+	} else {
+		u64_delta = (u64)(-scaled_ppm);
+		positive = false;
+	}
+	u64_delta = (u64_delta << 19);
+	lan743x_rate_adj = div_u64(u64_delta, 1000000);
+
+	if (positive)
+		lan743x_rate_adj |= PTP_CLOCK_RATE_ADJ_DIR_;
+
+	lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
+			  lan743x_rate_adj);
+
+	return 0;
+}
+
+static int lan743x_ptpci_adjfreq(struct ptp_clock_info *ptpci, s32 delta_ppb)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+	u32 lan743x_rate_adj = 0;
+	bool positive = true;
+	u32 u32_delta = 0;
+	u64 u64_delta = 0;
+
+	if ((delta_ppb < (-LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB)) ||
+	    delta_ppb > LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB) {
+		return -EINVAL;
+	}
+	if (delta_ppb > 0) {
+		u32_delta = (u32)delta_ppb;
+		positive = true;
+	} else {
+		u32_delta = (u32)(-delta_ppb);
+		positive = false;
+	}
+	u64_delta = (((u64)u32_delta) << 35);
+	lan743x_rate_adj = div_u64(u64_delta, 1000000000);
+
+	if (positive)
+		lan743x_rate_adj |= PTP_CLOCK_RATE_ADJ_DIR_;
+
+	lan743x_csr_write(adapter, PTP_CLOCK_RATE_ADJ,
+			  lan743x_rate_adj);
+
+	return 0;
+}
+
+static int lan743x_ptpci_adjtime(struct ptp_clock_info *ptpci, s64 delta)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+
+	lan743x_ptp_clock_step(adapter, delta);
+
+	return 0;
+}
+
+static int lan743x_ptpci_gettime64(struct ptp_clock_info *ptpci,
+				   struct timespec64 *ts)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+	u32 nano_seconds = 0;
+	u32 seconds = 0;
+
+	if (adapter->is_pci11x1x)
+		lan743x_ptp_io_clock_get(adapter, &seconds, &nano_seconds,
+					 NULL);
+	else
+		lan743x_ptp_clock_get(adapter, &seconds, &nano_seconds, NULL);
+	ts->tv_sec = seconds;
+	ts->tv_nsec = nano_seconds;
+
+	return 0;
+}
+
+static int lan743x_ptpci_settime64(struct ptp_clock_info *ptpci,
+				   const struct timespec64 *ts)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+	u32 nano_seconds = 0;
+	u32 seconds = 0;
+
+	if (ts) {
+		if (ts->tv_sec > 0xFFFFFFFFLL ||
+		    ts->tv_sec < 0) {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "ts->tv_sec out of range, %lld\n",
+				   ts->tv_sec);
+			return -ERANGE;
+		}
+		if (ts->tv_nsec >= 1000000000L ||
+		    ts->tv_nsec < 0) {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "ts->tv_nsec out of range, %ld\n",
+				   ts->tv_nsec);
+			return -ERANGE;
+		}
+		seconds = ts->tv_sec;
+		nano_seconds = ts->tv_nsec;
+		lan743x_ptp_clock_set(adapter, seconds, nano_seconds, 0);
+	} else {
+		netif_warn(adapter, drv, adapter->netdev, "ts == NULL\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static void lan743x_ptp_perout_off(struct lan743x_adapter *adapter,
+				   unsigned int index)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 general_config = 0;
+	struct lan743x_ptp_perout *perout = &ptp->perout[index];
+
+	if (perout->gpio_pin >= 0) {
+		lan743x_gpio_release(adapter, perout->gpio_pin);
+		perout->gpio_pin = -1;
+	}
+
+	if (perout->event_ch >= 0) {
+		/* set target to far in the future, effectively disabling it */
+		lan743x_csr_write(adapter,
+				  PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
+				  0xFFFF0000);
+		lan743x_csr_write(adapter,
+				  PTP_CLOCK_TARGET_NS_X(perout->event_ch),
+				  0);
+
+		general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
+		general_config |= PTP_GENERAL_CONFIG_RELOAD_ADD_X_
+				  (perout->event_ch);
+		lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
+		lan743x_ptp_release_event_ch(adapter, perout->event_ch);
+		perout->event_ch = -1;
+	}
+}
+
+static int lan743x_ptp_perout(struct lan743x_adapter *adapter, int on,
+			      struct ptp_perout_request *perout_request)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 period_sec = 0, period_nsec = 0;
+	u32 start_sec = 0, start_nsec = 0;
+	u32 general_config = 0;
+	int pulse_width = 0;
+	int perout_pin = 0;
+	unsigned int index = perout_request->index;
+	struct lan743x_ptp_perout *perout = &ptp->perout[index];
+	int ret = 0;
+
+	/* Reject requests with unsupported flags */
+	if (perout_request->flags & ~PTP_PEROUT_DUTY_CYCLE)
+		return -EOPNOTSUPP;
+
+	if (on) {
+		perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT,
+					  perout_request->index);
+		if (perout_pin < 0)
+			return -EBUSY;
+	} else {
+		lan743x_ptp_perout_off(adapter, index);
+		return 0;
+	}
+
+	if (perout->event_ch >= 0 ||
+	    perout->gpio_pin >= 0) {
+		/* already on, turn off first */
+		lan743x_ptp_perout_off(adapter, index);
+	}
+
+	perout->event_ch = lan743x_ptp_reserve_event_ch(adapter, index);
+
+	if (perout->event_ch < 0) {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "Failed to reserve event channel %d for PEROUT\n",
+			   index);
+		ret = -EBUSY;
+		goto failed;
+	}
+
+	perout->gpio_pin = lan743x_gpio_rsrv_ptp_out(adapter,
+						     perout_pin,
+						     perout->event_ch);
+
+	if (perout->gpio_pin < 0) {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "Failed to reserve gpio %d for PEROUT\n",
+			   perout_pin);
+		ret = -EBUSY;
+		goto failed;
+	}
+
+	start_sec = perout_request->start.sec;
+	start_sec += perout_request->start.nsec / 1000000000;
+	start_nsec = perout_request->start.nsec % 1000000000;
+
+	period_sec = perout_request->period.sec;
+	period_sec += perout_request->period.nsec / 1000000000;
+	period_nsec = perout_request->period.nsec % 1000000000;
+
+	if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) {
+		struct timespec64 ts_on, ts_period;
+		s64 wf_high, period64, half;
+		s32 reminder;
+
+		ts_on.tv_sec = perout_request->on.sec;
+		ts_on.tv_nsec = perout_request->on.nsec;
+		wf_high = timespec64_to_ns(&ts_on);
+		ts_period.tv_sec = perout_request->period.sec;
+		ts_period.tv_nsec = perout_request->period.nsec;
+		period64 = timespec64_to_ns(&ts_period);
+
+		if (period64 < 200) {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "perout period too small, minimum is 200nS\n");
+			ret = -EOPNOTSUPP;
+			goto failed;
+		}
+		if (wf_high >= period64) {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "pulse width must be smaller than period\n");
+			ret = -EINVAL;
+			goto failed;
+		}
+
+		/* Check if we can do 50% toggle on an even value of period.
+		 * If the period number is odd, then check if the requested
+		 * pulse width is the same as one of pre-defined width values.
+		 * Otherwise, return failure.
+		 */
+		half = div_s64_rem(period64, 2, &reminder);
+		if (!reminder) {
+			if (half == wf_high) {
+				/* It's 50% match. Use the toggle option */
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_TOGGLE_;
+				/* In this case, devide period value by 2 */
+				ts_period = ns_to_timespec64(div_s64(period64, 2));
+				period_sec = ts_period.tv_sec;
+				period_nsec = ts_period.tv_nsec;
+
+				goto program;
+			}
+		}
+		/* if we can't do toggle, then the width option needs to be the exact match */
+		if (wf_high == 200000000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+		} else if (wf_high == 10000000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
+		} else if (wf_high == 1000000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
+		} else if (wf_high == 100000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
+		} else if (wf_high == 10000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
+		} else if (wf_high == 100) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
+		} else {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "duty cycle specified is not supported\n");
+			ret = -EOPNOTSUPP;
+			goto failed;
+		}
+	} else {
+		if (period_sec == 0) {
+			if (period_nsec >= 400000000) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+			} else if (period_nsec >= 20000000) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
+			} else if (period_nsec >= 2000000) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
+			} else if (period_nsec >= 200000) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
+			} else if (period_nsec >= 20000) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
+			} else if (period_nsec >= 200) {
+				pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
+			} else {
+				netif_warn(adapter, drv, adapter->netdev,
+					   "perout period too small, minimum is 200nS\n");
+				ret = -EOPNOTSUPP;
+				goto failed;
+			}
+		} else {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+		}
+	}
+program:
+
+	/* turn off by setting target far in future */
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
+			  0xFFFF0000);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_NS_X(perout->event_ch), 0);
+
+	/* Configure to pulse every period */
+	general_config = lan743x_csr_read(adapter, PTP_GENERAL_CONFIG);
+	general_config &= ~(PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_
+			  (perout->event_ch));
+	general_config |= PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_
+			  (perout->event_ch, pulse_width);
+	general_config &= ~PTP_GENERAL_CONFIG_RELOAD_ADD_X_
+			  (perout->event_ch);
+	lan743x_csr_write(adapter, PTP_GENERAL_CONFIG, general_config);
+
+	/* set the reload to one toggle cycle */
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_RELOAD_SEC_X(perout->event_ch),
+			  period_sec);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_RELOAD_NS_X(perout->event_ch),
+			  period_nsec);
+
+	/* set the start time */
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_SEC_X(perout->event_ch),
+			  start_sec);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_NS_X(perout->event_ch),
+			  start_nsec);
+
+	return 0;
+
+failed:
+	lan743x_ptp_perout_off(adapter, index);
+	return ret;
+}
+
+static void lan743x_ptp_io_perout_off(struct lan743x_adapter *adapter,
+				      u32 index)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int perout_pin;
+	int event_ch;
+	u32 gen_cfg;
+	int val;
+
+	event_ch = ptp->ptp_io_perout[index];
+	if (event_ch >= 0) {
+		/* set target to far in the future, effectively disabling it */
+		lan743x_csr_write(adapter,
+				  PTP_CLOCK_TARGET_SEC_X(event_ch),
+				  0xFFFF0000);
+		lan743x_csr_write(adapter,
+				  PTP_CLOCK_TARGET_NS_X(event_ch),
+				  0);
+
+		gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG);
+		gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_
+				    (event_ch));
+		gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch));
+		gen_cfg |= HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch);
+		lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg);
+		if (event_ch)
+			lan743x_csr_write(adapter, PTP_INT_STS,
+					  PTP_INT_TIMER_INT_B_);
+		else
+			lan743x_csr_write(adapter, PTP_INT_STS,
+					  PTP_INT_TIMER_INT_A_);
+		lan743x_ptp_release_event_ch(adapter, event_ch);
+		ptp->ptp_io_perout[index] = -1;
+	}
+
+	perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index);
+
+	/* Deselect Event output */
+	val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG);
+
+	/* Disables the output of Local Time Target compare events */
+	val &= ~PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin);
+	lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val);
+
+	/* Configured as an opendrain driver*/
+	val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
+	val &= ~PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin);
+	lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val);
+	/* Dummy read to make sure write operation success */
+	val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
+}
+
+static int lan743x_ptp_io_perout(struct lan743x_adapter *adapter, int on,
+				 struct ptp_perout_request *perout_request)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 period_sec, period_nsec;
+	u32 start_sec, start_nsec;
+	u32 pulse_sec, pulse_nsec;
+	int pulse_width;
+	int perout_pin;
+	int event_ch;
+	u32 gen_cfg;
+	u32 index;
+	int val;
+
+	index = perout_request->index;
+	event_ch = ptp->ptp_io_perout[index];
+
+	if (on) {
+		perout_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_PEROUT, index);
+		if (perout_pin < 0)
+			return -EBUSY;
+	} else {
+		lan743x_ptp_io_perout_off(adapter, index);
+		return 0;
+	}
+
+	if (event_ch >= LAN743X_PTP_N_EVENT_CHAN) {
+		/* already on, turn off first */
+		lan743x_ptp_io_perout_off(adapter, index);
+	}
+
+	event_ch = lan743x_ptp_reserve_event_ch(adapter, index);
+	if (event_ch < 0) {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "Failed to reserve event channel %d for PEROUT\n",
+			   index);
+		goto failed;
+	}
+	ptp->ptp_io_perout[index] = event_ch;
+
+	if (perout_request->flags & PTP_PEROUT_DUTY_CYCLE) {
+		pulse_sec = perout_request->on.sec;
+		pulse_sec += perout_request->on.nsec / 1000000000;
+		pulse_nsec = perout_request->on.nsec % 1000000000;
+	} else {
+		pulse_sec = perout_request->period.sec;
+		pulse_sec += perout_request->period.nsec / 1000000000;
+		pulse_nsec = perout_request->period.nsec % 1000000000;
+	}
+
+	if (pulse_sec == 0) {
+		if (pulse_nsec >= 400000000) {
+			pulse_width = PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+		} else if (pulse_nsec >= 200000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100MS_;
+		} else if (pulse_nsec >= 100000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50MS_;
+		} else if (pulse_nsec >= 20000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10MS_;
+		} else if (pulse_nsec >= 10000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5MS_;
+		} else if (pulse_nsec >= 2000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1MS_;
+		} else if (pulse_nsec >= 1000000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500US_;
+		} else if (pulse_nsec >= 200000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100US_;
+		} else if (pulse_nsec >= 100000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_50US_;
+		} else if (pulse_nsec >= 20000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_10US_;
+		} else if (pulse_nsec >= 10000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_5US_;
+		} else if (pulse_nsec >= 2000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_1US_;
+		} else if (pulse_nsec >= 1000) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_500NS_;
+		} else if (pulse_nsec >= 200) {
+			pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_100NS_;
+		} else {
+			netif_warn(adapter, drv, adapter->netdev,
+				   "perout period too small, min is 200nS\n");
+			goto failed;
+		}
+	} else {
+		pulse_width = HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_200MS_;
+	}
+
+	/* turn off by setting target far in future */
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_SEC_X(event_ch),
+			  0xFFFF0000);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_NS_X(event_ch), 0);
+
+	/* Configure to pulse every period */
+	gen_cfg = lan743x_csr_read(adapter, HS_PTP_GENERAL_CONFIG);
+	gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_MASK_(event_ch));
+	gen_cfg |= HS_PTP_GENERAL_CONFIG_CLOCK_EVENT_X_SET_
+			  (event_ch, pulse_width);
+	gen_cfg |= HS_PTP_GENERAL_CONFIG_EVENT_POL_X_(event_ch);
+	gen_cfg &= ~(HS_PTP_GENERAL_CONFIG_RELOAD_ADD_X_(event_ch));
+	lan743x_csr_write(adapter, HS_PTP_GENERAL_CONFIG, gen_cfg);
+
+	/* set the reload to one toggle cycle */
+	period_sec = perout_request->period.sec;
+	period_sec += perout_request->period.nsec / 1000000000;
+	period_nsec = perout_request->period.nsec % 1000000000;
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_RELOAD_SEC_X(event_ch),
+			  period_sec);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_RELOAD_NS_X(event_ch),
+			  period_nsec);
+
+	start_sec = perout_request->start.sec;
+	start_sec += perout_request->start.nsec / 1000000000;
+	start_nsec = perout_request->start.nsec % 1000000000;
+
+	/* set the start time */
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_SEC_X(event_ch),
+			  start_sec);
+	lan743x_csr_write(adapter,
+			  PTP_CLOCK_TARGET_NS_X(event_ch),
+			  start_nsec);
+
+	/* Enable LTC Target Read */
+	val = lan743x_csr_read(adapter, PTP_CMD_CTL);
+	val |= PTP_CMD_CTL_PTP_LTC_TARGET_READ_;
+	lan743x_csr_write(adapter, PTP_CMD_CTL, val);
+
+	/* Configure as an push/pull driver */
+	val = lan743x_csr_read(adapter, PTP_IO_PIN_CFG);
+	val |= PTP_IO_PIN_CFG_OBUF_TYPE_(perout_pin);
+	lan743x_csr_write(adapter, PTP_IO_PIN_CFG, val);
+
+	/* Select Event output */
+	val = lan743x_csr_read(adapter, PTP_IO_EVENT_OUTPUT_CFG);
+	if (event_ch)
+		/* Channel B as the output */
+		val |= PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin);
+	else
+		/* Channel A as the output */
+		val &= ~PTP_IO_EVENT_OUTPUT_CFG_SEL_(perout_pin);
+
+	/* Enables the output of Local Time Target compare events */
+	val |= PTP_IO_EVENT_OUTPUT_CFG_EN_(perout_pin);
+	lan743x_csr_write(adapter, PTP_IO_EVENT_OUTPUT_CFG, val);
+
+	return 0;
+
+failed:
+	lan743x_ptp_io_perout_off(adapter, index);
+	return -ENODEV;
+}
+
+static void lan743x_ptp_io_extts_off(struct lan743x_adapter *adapter,
+				     u32 index)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	struct lan743x_extts *extts;
+	int val;
+
+	extts = &ptp->extts[index];
+	/* PTP Interrupt Enable Clear Register */
+	if (extts->flags & PTP_FALLING_EDGE)
+		val = PTP_INT_EN_FE_EN_CLR_(index);
+	else
+		val = PTP_INT_EN_RE_EN_CLR_(index);
+	lan743x_csr_write(adapter, PTP_INT_EN_CLR, val);
+
+	/* Disables PTP-IO edge lock */
+	val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG);
+	if (extts->flags & PTP_FALLING_EDGE) {
+		val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(index);
+		val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(index);
+	} else {
+		val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(index);
+		val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(index);
+	}
+	lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val);
+
+	/* PTP-IO De-select register */
+	val = lan743x_csr_read(adapter, PTP_IO_SEL);
+	val &= ~PTP_IO_SEL_MASK_;
+	lan743x_csr_write(adapter, PTP_IO_SEL, val);
+
+	/* Clear timestamp */
+	memset(&extts->ts, 0, sizeof(struct timespec64));
+	extts->flags = 0;
+}
+
+static int lan743x_ptp_io_event_cap_en(struct lan743x_adapter *adapter,
+				       u32 flags, u32 channel)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int val;
+
+	if ((flags & PTP_EXTTS_EDGES) ==  PTP_EXTTS_EDGES)
+		return -EOPNOTSUPP;
+
+	mutex_lock(&ptp->command_lock);
+	/* PTP-IO Event Capture Enable */
+	val = lan743x_csr_read(adapter, PTP_IO_CAP_CONFIG);
+	if (flags & PTP_FALLING_EDGE) {
+		val &= ~PTP_IO_CAP_CONFIG_LOCK_RE_(channel);
+		val &= ~PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel);
+		val |= PTP_IO_CAP_CONFIG_LOCK_FE_(channel);
+		val |= PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel);
+	} else {
+		/* Rising eventing as Default */
+		val &= ~PTP_IO_CAP_CONFIG_LOCK_FE_(channel);
+		val &= ~PTP_IO_CAP_CONFIG_FE_CAP_EN_(channel);
+		val |= PTP_IO_CAP_CONFIG_LOCK_RE_(channel);
+		val |= PTP_IO_CAP_CONFIG_RE_CAP_EN_(channel);
+	}
+	lan743x_csr_write(adapter, PTP_IO_CAP_CONFIG, val);
+
+	/* PTP-IO Select */
+	val = lan743x_csr_read(adapter, PTP_IO_SEL);
+	val &= ~PTP_IO_SEL_MASK_;
+	val |= channel << PTP_IO_SEL_SHIFT_;
+	lan743x_csr_write(adapter, PTP_IO_SEL, val);
+
+	/* PTP Interrupt Enable Register */
+	if (flags & PTP_FALLING_EDGE)
+		val = PTP_INT_EN_FE_EN_SET_(channel);
+	else
+		val = PTP_INT_EN_RE_EN_SET_(channel);
+	lan743x_csr_write(adapter, PTP_INT_EN_SET, val);
+
+	mutex_unlock(&ptp->command_lock);
+
+	return 0;
+}
+
+static int lan743x_ptp_io_extts(struct lan743x_adapter *adapter, int on,
+				struct ptp_extts_request *extts_request)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 flags = extts_request->flags;
+	u32 index = extts_request->index;
+	struct lan743x_extts *extts;
+	int extts_pin;
+	int ret = 0;
+
+	extts = &ptp->extts[index];
+
+	if (on) {
+		extts_pin = ptp_find_pin(ptp->ptp_clock, PTP_PF_EXTTS, index);
+		if (extts_pin < 0)
+			return -EBUSY;
+
+		ret = lan743x_ptp_io_event_cap_en(adapter, flags, index);
+		if (!ret)
+			extts->flags = flags;
+	} else {
+		lan743x_ptp_io_extts_off(adapter, index);
+	}
+
+	return ret;
+}
+
+static int lan743x_ptpci_enable(struct ptp_clock_info *ptpci,
+				struct ptp_clock_request *request, int on)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+
+	if (request) {
+		switch (request->type) {
+		case PTP_CLK_REQ_EXTTS:
+			if (request->extts.index < ptpci->n_ext_ts)
+				return lan743x_ptp_io_extts(adapter, on,
+							 &request->extts);
+			return -EINVAL;
+		case PTP_CLK_REQ_PEROUT:
+			if (request->perout.index < ptpci->n_per_out) {
+				if (adapter->is_pci11x1x)
+					return lan743x_ptp_io_perout(adapter, on,
+							     &request->perout);
+				else
+					return lan743x_ptp_perout(adapter, on,
+							  &request->perout);
+			}
+			return -EINVAL;
+		case PTP_CLK_REQ_PPS:
+			return -EINVAL;
+		default:
+			netif_err(adapter, drv, adapter->netdev,
+				  "request->type == %d, Unknown\n",
+				  request->type);
+			break;
+		}
+	} else {
+		netif_err(adapter, drv, adapter->netdev, "request == NULL\n");
+	}
+	return 0;
+}
+
+static int lan743x_ptpci_verify_pin_config(struct ptp_clock_info *ptp,
+					   unsigned int pin,
+					   enum ptp_pin_function func,
+					   unsigned int chan)
+{
+	struct lan743x_ptp *lan_ptp =
+		container_of(ptp, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(lan_ptp, struct lan743x_adapter, ptp);
+	int result = 0;
+
+	/* Confirm the requested function is supported. Parameter
+	 * validation is done by the caller.
+	 */
+	switch (func) {
+	case PTP_PF_NONE:
+	case PTP_PF_PEROUT:
+		break;
+	case PTP_PF_EXTTS:
+		if (!adapter->is_pci11x1x)
+			result = -1;
+		break;
+	case PTP_PF_PHYSYNC:
+	default:
+		result = -1;
+		break;
+	}
+	return result;
+}
+
+static void lan743x_ptp_io_event_clock_get(struct lan743x_adapter *adapter,
+					   bool fe, u8 channel,
+					   struct timespec64 *ts)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	struct lan743x_extts *extts;
+	u32 sec, nsec;
+
+	mutex_lock(&ptp->command_lock);
+	if (fe) {
+		sec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_SEC_CAP_X);
+		nsec = lan743x_csr_read(adapter, PTP_IO_FE_LTC_NS_CAP_X);
+	} else {
+		sec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_SEC_CAP_X);
+		nsec = lan743x_csr_read(adapter, PTP_IO_RE_LTC_NS_CAP_X);
+	}
+
+	mutex_unlock(&ptp->command_lock);
+
+	/* Update Local timestamp */
+	extts = &ptp->extts[channel];
+	extts->ts.tv_sec = sec;
+	extts->ts.tv_nsec = nsec;
+	ts->tv_sec = sec;
+	ts->tv_nsec = nsec;
+}
+
+static long lan743x_ptpci_do_aux_work(struct ptp_clock_info *ptpci)
+{
+	struct lan743x_ptp *ptp =
+		container_of(ptpci, struct lan743x_ptp, ptp_clock_info);
+	struct lan743x_adapter *adapter =
+		container_of(ptp, struct lan743x_adapter, ptp);
+	u32 cap_info, cause, header, nsec, seconds;
+	bool new_timestamp_available = false;
+	struct ptp_clock_event ptp_event;
+	struct timespec64 ts;
+	int ptp_int_sts;
+	int count = 0;
+	int channel;
+	s64 ns;
+
+	ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
+	while ((count < 100) && ptp_int_sts) {
+		count++;
+
+		if (ptp_int_sts & PTP_INT_BIT_TX_TS_) {
+			cap_info = lan743x_csr_read(adapter, PTP_CAP_INFO);
+
+			if (PTP_CAP_INFO_TX_TS_CNT_GET_(cap_info) > 0) {
+				seconds = lan743x_csr_read(adapter,
+							   PTP_TX_EGRESS_SEC);
+				nsec = lan743x_csr_read(adapter,
+							PTP_TX_EGRESS_NS);
+				cause = (nsec &
+					 PTP_TX_EGRESS_NS_CAPTURE_CAUSE_MASK_);
+				header = lan743x_csr_read(adapter,
+							  PTP_TX_MSG_HEADER);
+
+				if (cause ==
+				    PTP_TX_EGRESS_NS_CAPTURE_CAUSE_SW_) {
+					nsec &= PTP_TX_EGRESS_NS_TS_NS_MASK_;
+					lan743x_ptp_tx_ts_enqueue_ts(adapter,
+								     seconds,
+								     nsec,
+								     header);
+					new_timestamp_available = true;
+				} else if (cause ==
+					   PTP_TX_EGRESS_NS_CAPTURE_CAUSE_AUTO_) {
+					netif_err(adapter, drv, adapter->netdev,
+						  "Auto capture cause not supported\n");
+				} else {
+					netif_warn(adapter, drv, adapter->netdev,
+						   "unknown tx timestamp capture cause\n");
+				}
+			} else {
+				netif_warn(adapter, drv, adapter->netdev,
+					   "TX TS INT but no TX TS CNT\n");
+			}
+			lan743x_csr_write(adapter, PTP_INT_STS,
+					  PTP_INT_BIT_TX_TS_);
+		}
+
+		if (ptp_int_sts & PTP_INT_IO_FE_MASK_) {
+			do {
+				channel = lan743x_get_channel((ptp_int_sts &
+							PTP_INT_IO_FE_MASK_) >>
+							PTP_INT_IO_FE_SHIFT_);
+				if (channel >= 0 &&
+				    channel < PCI11X1X_PTP_IO_MAX_CHANNELS) {
+					lan743x_ptp_io_event_clock_get(adapter,
+								       true,
+								       channel,
+								       &ts);
+					/* PTP Falling Event post */
+					ns = timespec64_to_ns(&ts);
+					ptp_event.timestamp = ns;
+					ptp_event.index = channel;
+					ptp_event.type = PTP_CLOCK_EXTTS;
+					ptp_clock_event(ptp->ptp_clock,
+							&ptp_event);
+					lan743x_csr_write(adapter, PTP_INT_STS,
+							  PTP_INT_IO_FE_SET_
+							  (channel));
+					ptp_int_sts &= ~(1 <<
+							 (PTP_INT_IO_FE_SHIFT_ +
+							  channel));
+				} else {
+					/* Clear falling event interrupts */
+					lan743x_csr_write(adapter, PTP_INT_STS,
+							  PTP_INT_IO_FE_MASK_);
+					ptp_int_sts &= ~PTP_INT_IO_FE_MASK_;
+				}
+			} while (ptp_int_sts & PTP_INT_IO_FE_MASK_);
+		}
+
+		if (ptp_int_sts & PTP_INT_IO_RE_MASK_) {
+			do {
+				channel = lan743x_get_channel((ptp_int_sts &
+						       PTP_INT_IO_RE_MASK_) >>
+						       PTP_INT_IO_RE_SHIFT_);
+				if (channel >= 0 &&
+				    channel < PCI11X1X_PTP_IO_MAX_CHANNELS) {
+					lan743x_ptp_io_event_clock_get(adapter,
+								       false,
+								       channel,
+								       &ts);
+					/* PTP Rising Event post */
+					ns = timespec64_to_ns(&ts);
+					ptp_event.timestamp = ns;
+					ptp_event.index = channel;
+					ptp_event.type = PTP_CLOCK_EXTTS;
+					ptp_clock_event(ptp->ptp_clock,
+							&ptp_event);
+					lan743x_csr_write(adapter, PTP_INT_STS,
+							  PTP_INT_IO_RE_SET_
+							  (channel));
+					ptp_int_sts &= ~(1 <<
+							 (PTP_INT_IO_RE_SHIFT_ +
+							  channel));
+				} else {
+					/* Clear Rising event interrupt */
+					lan743x_csr_write(adapter, PTP_INT_STS,
+							  PTP_INT_IO_RE_MASK_);
+					ptp_int_sts &= ~PTP_INT_IO_RE_MASK_;
+				}
+			} while (ptp_int_sts & PTP_INT_IO_RE_MASK_);
+		}
+
+		ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
+	}
+
+	if (new_timestamp_available)
+		lan743x_ptp_tx_ts_complete(adapter);
+
+	lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+
+	return -1;
+}
+
+static void lan743x_ptp_clock_get(struct lan743x_adapter *adapter,
+				  u32 *seconds, u32 *nano_seconds,
+				  u32 *sub_nano_seconds)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_);
+	lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_);
+
+	if (seconds)
+		(*seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SEC);
+
+	if (nano_seconds)
+		(*nano_seconds) = lan743x_csr_read(adapter, PTP_CLOCK_NS);
+
+	if (sub_nano_seconds)
+		(*sub_nano_seconds) =
+		lan743x_csr_read(adapter, PTP_CLOCK_SUBNS);
+
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_io_clock_get(struct lan743x_adapter *adapter,
+				     u32 *sec, u32 *nsec, u32 *sub_nsec)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_READ_);
+	lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_READ_);
+
+	if (sec)
+		(*sec) = lan743x_csr_read(adapter, PTP_LTC_RD_SEC_LO);
+
+	if (nsec)
+		(*nsec) = lan743x_csr_read(adapter, PTP_LTC_RD_NS);
+
+	if (sub_nsec)
+		(*sub_nsec) =
+		lan743x_csr_read(adapter, PTP_LTC_RD_SUBNS);
+
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_step(struct lan743x_adapter *adapter,
+				   s64 time_step_ns)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	u32 nano_seconds_step = 0;
+	u64 abs_time_step_ns = 0;
+	u32 unsigned_seconds = 0;
+	u32 nano_seconds = 0;
+	u32 remainder = 0;
+	s32 seconds = 0;
+
+	if (time_step_ns >  15000000000LL) {
+		/* convert to clock set */
+		if (adapter->is_pci11x1x)
+			lan743x_ptp_io_clock_get(adapter, &unsigned_seconds,
+						 &nano_seconds, NULL);
+		else
+			lan743x_ptp_clock_get(adapter, &unsigned_seconds,
+					      &nano_seconds, NULL);
+		unsigned_seconds += div_u64_rem(time_step_ns, 1000000000LL,
+						&remainder);
+		nano_seconds += remainder;
+		if (nano_seconds >= 1000000000) {
+			unsigned_seconds++;
+			nano_seconds -= 1000000000;
+		}
+		lan743x_ptp_clock_set(adapter, unsigned_seconds,
+				      nano_seconds, 0);
+		return;
+	} else if (time_step_ns < -15000000000LL) {
+		/* convert to clock set */
+		time_step_ns = -time_step_ns;
+
+		if (adapter->is_pci11x1x) {
+			lan743x_ptp_io_clock_get(adapter, &unsigned_seconds,
+						 &nano_seconds, NULL);
+		} else {
+			lan743x_ptp_clock_get(adapter, &unsigned_seconds,
+					      &nano_seconds, NULL);
+		}
+		unsigned_seconds -= div_u64_rem(time_step_ns, 1000000000LL,
+						&remainder);
+		nano_seconds_step = remainder;
+		if (nano_seconds < nano_seconds_step) {
+			unsigned_seconds--;
+			nano_seconds += 1000000000;
+		}
+		nano_seconds -= nano_seconds_step;
+		lan743x_ptp_clock_set(adapter, unsigned_seconds,
+				      nano_seconds, 0);
+		return;
+	}
+
+	/* do clock step */
+	if (time_step_ns >= 0) {
+		abs_time_step_ns = (u64)(time_step_ns);
+		seconds = (s32)div_u64_rem(abs_time_step_ns, 1000000000,
+					   &remainder);
+		nano_seconds = (u32)remainder;
+	} else {
+		abs_time_step_ns = (u64)(-time_step_ns);
+		seconds = -((s32)div_u64_rem(abs_time_step_ns, 1000000000,
+					     &remainder));
+		nano_seconds = (u32)remainder;
+		if (nano_seconds > 0) {
+			/* subtracting nano seconds is not allowed
+			 * convert to subtracting from seconds,
+			 * and adding to nanoseconds
+			 */
+			seconds--;
+			nano_seconds = (1000000000 - nano_seconds);
+		}
+	}
+
+	if (nano_seconds > 0) {
+		/* add 8 ns to cover the likely normal increment */
+		nano_seconds += 8;
+	}
+
+	if (nano_seconds >= 1000000000) {
+		/* carry into seconds */
+		seconds++;
+		nano_seconds -= 1000000000;
+	}
+
+	while (seconds) {
+		mutex_lock(&ptp->command_lock);
+		if (seconds > 0) {
+			u32 adjustment_value = (u32)seconds;
+
+			if (adjustment_value > 0xF)
+				adjustment_value = 0xF;
+			lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+					  PTP_CLOCK_STEP_ADJ_DIR_ |
+					  adjustment_value);
+			seconds -= ((s32)adjustment_value);
+		} else {
+			u32 adjustment_value = (u32)(-seconds);
+
+			if (adjustment_value > 0xF)
+				adjustment_value = 0xF;
+			lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+					  adjustment_value);
+			seconds += ((s32)adjustment_value);
+		}
+		lan743x_csr_write(adapter, PTP_CMD_CTL,
+				  PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
+		lan743x_ptp_wait_till_cmd_done(adapter,
+					       PTP_CMD_CTL_PTP_CLOCK_STEP_SEC_);
+		mutex_unlock(&ptp->command_lock);
+	}
+	if (nano_seconds) {
+		mutex_lock(&ptp->command_lock);
+		lan743x_csr_write(adapter, PTP_CLOCK_STEP_ADJ,
+				  PTP_CLOCK_STEP_ADJ_DIR_ |
+				  (nano_seconds &
+				  PTP_CLOCK_STEP_ADJ_VALUE_MASK_));
+		lan743x_csr_write(adapter, PTP_CMD_CTL,
+				  PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
+		lan743x_ptp_wait_till_cmd_done(adapter,
+					       PTP_CMD_CTL_PTP_CLK_STP_NSEC_);
+		mutex_unlock(&ptp->command_lock);
+	}
+}
+
+void lan743x_ptp_isr(void *context)
+{
+	struct lan743x_adapter *adapter = (struct lan743x_adapter *)context;
+	struct lan743x_ptp *ptp = NULL;
+	int enable_flag = 1;
+	u32 ptp_int_sts = 0;
+
+	ptp = &adapter->ptp;
+
+	lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
+
+	ptp_int_sts = lan743x_csr_read(adapter, PTP_INT_STS);
+	ptp_int_sts &= lan743x_csr_read(adapter, PTP_INT_EN_SET);
+
+	if (ptp_int_sts & PTP_INT_BIT_TX_TS_) {
+		ptp_schedule_worker(ptp->ptp_clock, 0);
+		enable_flag = 0;/* tasklet will re-enable later */
+	}
+	if (ptp_int_sts & PTP_INT_BIT_TX_SWTS_ERR_) {
+		netif_err(adapter, drv, adapter->netdev,
+			  "PTP TX Software Timestamp Error\n");
+		/* clear int status bit */
+		lan743x_csr_write(adapter, PTP_INT_STS,
+				  PTP_INT_BIT_TX_SWTS_ERR_);
+	}
+	if (ptp_int_sts & PTP_INT_BIT_TIMER_B_) {
+		/* clear int status bit */
+		lan743x_csr_write(adapter, PTP_INT_STS,
+				  PTP_INT_BIT_TIMER_B_);
+	}
+	if (ptp_int_sts & PTP_INT_BIT_TIMER_A_) {
+		/* clear int status bit */
+		lan743x_csr_write(adapter, PTP_INT_STS,
+				  PTP_INT_BIT_TIMER_A_);
+	}
+
+	if (enable_flag) {
+		/* re-enable isr */
+		lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+	}
+}
+
+static void lan743x_ptp_tx_ts_enqueue_skb(struct lan743x_adapter *adapter,
+					  struct sk_buff *skb, bool ignore_sync)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	spin_lock_bh(&ptp->tx_ts_lock);
+	if (ptp->tx_ts_skb_queue_size < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+		ptp->tx_ts_skb_queue[ptp->tx_ts_skb_queue_size] = skb;
+		if (ignore_sync)
+			ptp->tx_ts_ignore_sync_queue |=
+				BIT(ptp->tx_ts_skb_queue_size);
+		ptp->tx_ts_skb_queue_size++;
+	} else {
+		/* this should never happen, so long as the tx channel
+		 * calls and honors the result from
+		 * lan743x_ptp_request_tx_timestamp
+		 */
+		netif_err(adapter, drv, adapter->netdev,
+			  "tx ts skb queue overflow\n");
+		dev_kfree_skb(skb);
+	}
+	spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+static void lan743x_ptp_sync_to_system_clock(struct lan743x_adapter *adapter)
+{
+	struct timespec64 ts;
+
+	ktime_get_clocktai_ts64(&ts);
+
+	lan743x_ptp_clock_set(adapter, ts.tv_sec, ts.tv_nsec, 0);
+}
+
+void lan743x_ptp_update_latency(struct lan743x_adapter *adapter,
+				u32 link_speed)
+{
+	switch (link_speed) {
+	case 10:
+		lan743x_csr_write(adapter, PTP_LATENCY,
+				  PTP_LATENCY_TX_SET_(0) |
+				  PTP_LATENCY_RX_SET_(0));
+		break;
+	case 100:
+		lan743x_csr_write(adapter, PTP_LATENCY,
+				  PTP_LATENCY_TX_SET_(181) |
+				  PTP_LATENCY_RX_SET_(594));
+		break;
+	case 1000:
+		lan743x_csr_write(adapter, PTP_LATENCY,
+				  PTP_LATENCY_TX_SET_(30) |
+				  PTP_LATENCY_RX_SET_(525));
+		break;
+	}
+}
+
+int lan743x_ptp_init(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int i;
+
+	mutex_init(&ptp->command_lock);
+	spin_lock_init(&ptp->tx_ts_lock);
+	ptp->used_event_ch = 0;
+
+	for (i = 0; i < LAN743X_PTP_N_EVENT_CHAN; i++) {
+		ptp->perout[i].event_ch = -1;
+		ptp->perout[i].gpio_pin = -1;
+	}
+
+	lan743x_led_mux_save(adapter);
+
+	return 0;
+}
+
+int lan743x_ptp_open(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int ret = -ENODEV;
+	u32 temp;
+	int i;
+	int n_pins;
+
+	lan743x_ptp_reset(adapter);
+	lan743x_ptp_sync_to_system_clock(adapter);
+	temp = lan743x_csr_read(adapter, PTP_TX_MOD2);
+	temp |= PTP_TX_MOD2_TX_PTP_CLR_UDPV4_CHKSUM_;
+	lan743x_csr_write(adapter, PTP_TX_MOD2, temp);
+	lan743x_ptp_enable(adapter);
+	lan743x_csr_write(adapter, INT_EN_SET, INT_BIT_1588_);
+	lan743x_csr_write(adapter, PTP_INT_EN_SET,
+			  PTP_INT_BIT_TX_SWTS_ERR_ | PTP_INT_BIT_TX_TS_);
+	ptp->flags |= PTP_FLAG_ISR_ENABLED;
+
+	if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK))
+		return 0;
+
+	switch (adapter->csr.id_rev & ID_REV_ID_MASK_) {
+	case ID_REV_ID_LAN7430_:
+		n_pins = LAN7430_N_GPIO;
+		break;
+	case ID_REV_ID_LAN7431_:
+	case ID_REV_ID_A011_:
+	case ID_REV_ID_A041_:
+		n_pins = LAN7431_N_GPIO;
+		break;
+	default:
+		netif_warn(adapter, drv, adapter->netdev,
+			   "Unknown LAN743x (%08x). Assuming no GPIO\n",
+			   adapter->csr.id_rev);
+		n_pins = 0;
+		break;
+	}
+
+	if (n_pins > LAN743X_PTP_N_GPIO)
+		n_pins = LAN743X_PTP_N_GPIO;
+
+	for (i = 0; i < n_pins; i++) {
+		struct ptp_pin_desc *ptp_pin = &ptp->pin_config[i];
+
+		snprintf(ptp_pin->name,
+			 sizeof(ptp_pin->name), "lan743x_ptp_pin_%02d", i);
+		ptp_pin->index = i;
+		ptp_pin->func = PTP_PF_NONE;
+	}
+
+	ptp->ptp_clock_info.owner = THIS_MODULE;
+	snprintf(ptp->ptp_clock_info.name, 16, "%pm",
+		 adapter->netdev->dev_addr);
+	ptp->ptp_clock_info.max_adj = LAN743X_PTP_MAX_FREQ_ADJ_IN_PPB;
+	ptp->ptp_clock_info.n_alarm = 0;
+	ptp->ptp_clock_info.n_ext_ts = LAN743X_PTP_N_EXTTS;
+	ptp->ptp_clock_info.n_per_out = LAN743X_PTP_N_EVENT_CHAN;
+	ptp->ptp_clock_info.n_pins = n_pins;
+	ptp->ptp_clock_info.pps = LAN743X_PTP_N_PPS;
+	ptp->ptp_clock_info.pin_config = ptp->pin_config;
+	ptp->ptp_clock_info.adjfine = lan743x_ptpci_adjfine;
+	ptp->ptp_clock_info.adjfreq = lan743x_ptpci_adjfreq;
+	ptp->ptp_clock_info.adjtime = lan743x_ptpci_adjtime;
+	ptp->ptp_clock_info.gettime64 = lan743x_ptpci_gettime64;
+	ptp->ptp_clock_info.getcrosststamp = NULL;
+	ptp->ptp_clock_info.settime64 = lan743x_ptpci_settime64;
+	ptp->ptp_clock_info.enable = lan743x_ptpci_enable;
+	ptp->ptp_clock_info.do_aux_work = lan743x_ptpci_do_aux_work;
+	ptp->ptp_clock_info.verify = lan743x_ptpci_verify_pin_config;
+
+	ptp->ptp_clock = ptp_clock_register(&ptp->ptp_clock_info,
+					    &adapter->pdev->dev);
+
+	if (IS_ERR(ptp->ptp_clock)) {
+		netif_err(adapter, ifup, adapter->netdev,
+			  "ptp_clock_register failed\n");
+		goto done;
+	}
+	ptp->flags |= PTP_FLAG_PTP_CLOCK_REGISTERED;
+	netif_info(adapter, ifup, adapter->netdev,
+		   "successfully registered ptp clock\n");
+
+	return 0;
+done:
+	lan743x_ptp_close(adapter);
+	return ret;
+}
+
+void lan743x_ptp_close(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	int index;
+
+	if (IS_ENABLED(CONFIG_PTP_1588_CLOCK) &&
+	    (ptp->flags & PTP_FLAG_PTP_CLOCK_REGISTERED)) {
+		ptp_clock_unregister(ptp->ptp_clock);
+		ptp->ptp_clock = NULL;
+		ptp->flags &= ~PTP_FLAG_PTP_CLOCK_REGISTERED;
+		netif_info(adapter, drv, adapter->netdev,
+			   "ptp clock unregister\n");
+	}
+
+	if (ptp->flags & PTP_FLAG_ISR_ENABLED) {
+		lan743x_csr_write(adapter, PTP_INT_EN_CLR,
+				  PTP_INT_BIT_TX_SWTS_ERR_ |
+				  PTP_INT_BIT_TX_TS_);
+		lan743x_csr_write(adapter, INT_EN_CLR, INT_BIT_1588_);
+		ptp->flags &= ~PTP_FLAG_ISR_ENABLED;
+	}
+
+	/* clean up pending timestamp requests */
+	lan743x_ptp_tx_ts_complete(adapter);
+	spin_lock_bh(&ptp->tx_ts_lock);
+	for (index = 0;
+		index < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS;
+		index++) {
+		struct sk_buff *skb = ptp->tx_ts_skb_queue[index];
+
+		dev_kfree_skb(skb);
+		ptp->tx_ts_skb_queue[index] = NULL;
+		ptp->tx_ts_seconds_queue[index] = 0;
+		ptp->tx_ts_nseconds_queue[index] = 0;
+	}
+	ptp->tx_ts_skb_queue_size = 0;
+	ptp->tx_ts_queue_size = 0;
+	ptp->pending_tx_timestamps = 0;
+	spin_unlock_bh(&ptp->tx_ts_lock);
+
+	lan743x_led_mux_restore(adapter);
+
+	lan743x_ptp_disable(adapter);
+}
+
+static void lan743x_ptp_set_sync_ts_insert(struct lan743x_adapter *adapter,
+					   bool ts_insert_enable)
+{
+	u32 ptp_tx_mod = lan743x_csr_read(adapter, PTP_TX_MOD);
+
+	if (ts_insert_enable)
+		ptp_tx_mod |= PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
+	else
+		ptp_tx_mod &= ~PTP_TX_MOD_TX_PTP_SYNC_TS_INSERT_;
+
+	lan743x_csr_write(adapter, PTP_TX_MOD, ptp_tx_mod);
+}
+
+static bool lan743x_ptp_is_enabled(struct lan743x_adapter *adapter)
+{
+	if (lan743x_csr_read(adapter, PTP_CMD_CTL) & PTP_CMD_CTL_PTP_ENABLE_)
+		return true;
+	return false;
+}
+
+static void lan743x_ptp_enable(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+
+	if (lan743x_ptp_is_enabled(adapter)) {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "PTP already enabled\n");
+		goto done;
+	}
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_ENABLE_);
+done:
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_disable(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+	if (!lan743x_ptp_is_enabled(adapter)) {
+		netif_warn(adapter, drv, adapter->netdev,
+			   "PTP already disabled\n");
+		goto done;
+	}
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_DISABLE_);
+	lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_ENABLE_);
+done:
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_reset(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+
+	if (lan743x_ptp_is_enabled(adapter)) {
+		netif_err(adapter, drv, adapter->netdev,
+			  "Attempting reset while enabled\n");
+		goto done;
+	}
+
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_RESET_);
+	lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_RESET_);
+done:
+	mutex_unlock(&ptp->command_lock);
+}
+
+static void lan743x_ptp_clock_set(struct lan743x_adapter *adapter,
+				  u32 seconds, u32 nano_seconds,
+				  u32 sub_nano_seconds)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	mutex_lock(&ptp->command_lock);
+
+	lan743x_csr_write(adapter, PTP_CLOCK_SEC, seconds);
+	lan743x_csr_write(adapter, PTP_CLOCK_NS, nano_seconds);
+	lan743x_csr_write(adapter, PTP_CLOCK_SUBNS, sub_nano_seconds);
+
+	lan743x_csr_write(adapter, PTP_CMD_CTL, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
+	lan743x_ptp_wait_till_cmd_done(adapter, PTP_CMD_CTL_PTP_CLOCK_LOAD_);
+	mutex_unlock(&ptp->command_lock);
+}
+
+bool lan743x_ptp_request_tx_timestamp(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+	bool result = false;
+
+	spin_lock_bh(&ptp->tx_ts_lock);
+	if (ptp->pending_tx_timestamps < LAN743X_PTP_NUMBER_OF_TX_TIMESTAMPS) {
+		/* request granted */
+		ptp->pending_tx_timestamps++;
+		result = true;
+	}
+	spin_unlock_bh(&ptp->tx_ts_lock);
+	return result;
+}
+
+void lan743x_ptp_unrequest_tx_timestamp(struct lan743x_adapter *adapter)
+{
+	struct lan743x_ptp *ptp = &adapter->ptp;
+
+	spin_lock_bh(&ptp->tx_ts_lock);
+	if (ptp->pending_tx_timestamps > 0)
+		ptp->pending_tx_timestamps--;
+	else
+		netif_err(adapter, drv, adapter->netdev,
+			  "unrequest failed, pending_tx_timestamps==0\n");
+	spin_unlock_bh(&ptp->tx_ts_lock);
+}
+
+void lan743x_ptp_tx_timestamp_skb(struct lan743x_adapter *adapter,
+				  struct sk_buff *skb, bool ignore_sync)
+{
+	lan743x_ptp_tx_ts_enqueue_skb(adapter, skb, ignore_sync);
+
+	lan743x_ptp_tx_ts_complete(adapter);
+}
+
+int lan743x_ptp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
+{
+	struct lan743x_adapter *adapter = netdev_priv(netdev);
+	struct hwtstamp_config config;
+	int ret = 0;
+	int index;
+
+	if (!ifr) {
+		netif_err(adapter, drv, adapter->netdev,
+			  "SIOCSHWTSTAMP, ifr == NULL\n");
+		return -EINVAL;
+	}
+
+	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
+		return -EFAULT;
+
+	switch (config.tx_type) {
+	case HWTSTAMP_TX_OFF:
+		for (index = 0; index < adapter->used_tx_channels;
+		     index++)
+			lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+							 false, false);
+		lan743x_ptp_set_sync_ts_insert(adapter, false);
+		break;
+	case HWTSTAMP_TX_ON:
+		for (index = 0; index < adapter->used_tx_channels;
+			index++)
+			lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+							 true, false);
+		lan743x_ptp_set_sync_ts_insert(adapter, false);
+		break;
+	case HWTSTAMP_TX_ONESTEP_SYNC:
+		for (index = 0; index < adapter->used_tx_channels;
+			index++)
+			lan743x_tx_set_timestamping_mode(&adapter->tx[index],
+							 true, true);
+
+		lan743x_ptp_set_sync_ts_insert(adapter, true);
+		break;
+	case HWTSTAMP_TX_ONESTEP_P2P:
+		ret = -ERANGE;
+		break;
+	default:
+		netif_warn(adapter, drv, adapter->netdev,
+			   "  tx_type = %d, UNKNOWN\n", config.tx_type);
+		ret = -EINVAL;
+		break;
+	}
+
+	if (!ret)
+		return copy_to_user(ifr->ifr_data, &config,
+			sizeof(config)) ? -EFAULT : 0;
+	return ret;
+}