[v3, 0/9] Add ENETC PTP clock driver

[v3, 0/9] Add ENETC PTP clock driver

[Yangbo Lu]

There is same QorIQ 1588 timer IP block on the new ENETC Ethernet
controller with eTSEC/DPAA Ethernet controllers. However it's
different endianness (little-endian) and using PCI driver.

To support ENETC PTP driver, ptp_qoriq driver needed to be
reworked to make functions global for reusing, to add little-
endian support, to add ENETC memory map support, and to add
ENETC dependency for ptp_qoriq driver.

In addition, although ENETC PTP driver is a PCI driver, the dts
node still could be used. Currently the ls1028a dtsi which is
the only platform by now using ENETC is not complete, so there
is still dependency for ENETC PTP node upstreaming. This will
be done in the near future. The hardware timestamping support
for ENETC is done but needs to be reworked with new method in
internal git tree, and will be sent out soon.

Yangbo Lu (9):
  ptp_qoriq: make structure/function names more consistent
  ptp_qoriq: make ptp operations global
  ptp_qoriq: convert to use ptp_qoriq_init/free
  ptp_qoriq: add little enadian support
  dt-binding: ptp_qoriq: add little-endian support
  ptp_qoriq: fix register memory map
  ptp: add QorIQ PTP support for ENETC
  enetc: add PTP clock driver
  MAINTAINERS: add enetc_ptp driver into QorIQ PTP list

 .../devicetree/bindings/ptp/ptp-qoriq.txt          |    3 +
 MAINTAINERS                                        |    1 +
 drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c |    2 +-
 drivers/net/ethernet/freescale/enetc/Kconfig       |   12 +
 drivers/net/ethernet/freescale/enetc/Makefile      |    3 +
 drivers/net/ethernet/freescale/enetc/enetc_hw.h    |    5 +-
 drivers/net/ethernet/freescale/enetc/enetc_ptp.c   |  144 +++++++
 drivers/net/ethernet/freescale/gianfar_ethtool.c   |    2 +-
 drivers/ptp/Kconfig                                |    2 +-
 drivers/ptp/ptp_qoriq.c                            |  437 +++++++++++---------
 drivers/ptp/ptp_qoriq_debugfs.c                    |   48 ++--
 include/linux/fsl/ptp_qoriq.h                      |   63 ++-
 12 files changed, 466 insertions(+), 256 deletions(-)
 create mode 100644 drivers/net/ethernet/freescale/enetc/enetc_ptp.c

[v3, 1/9] ptp_qoriq: make structure/function names more consistent

[Yangbo Lu]

Strings containing "ptp_qoriq" or "qoriq_ptp" which were used for
structure/function names were complained by users. Let's just use
the unique "ptp_qoriq" to make these names more consistent.
This patch is just to unify the names using "ptp_qoriq". It hasn't
changed any functions.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- Fixed build issue in gianfar/dpaa ethtool driver.
Changes for v3:
	- None.
---
 drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c |    2 +-
 drivers/net/ethernet/freescale/gianfar_ethtool.c   |    2 +-
 drivers/ptp/ptp_qoriq.c                            |  288 ++++++++++----------
 drivers/ptp/ptp_qoriq_debugfs.c                    |   36 ++--
 include/linux/fsl/ptp_qoriq.h                      |   14 +-
 5 files changed, 171 insertions(+), 171 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
index 6249711..bdee441 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_ethtool.c
@@ -501,7 +501,7 @@ static int dpaa_get_ts_info(struct net_device *net_dev,
 	struct device_node *mac_node = dev->of_node;
 	struct device_node *fman_node = NULL, *ptp_node = NULL;
 	struct platform_device *ptp_dev = NULL;
-	struct qoriq_ptp *ptp = NULL;
+	struct ptp_qoriq *ptp = NULL;
 
 	info->phc_index = -1;
 
diff --git a/drivers/net/ethernet/freescale/gianfar_ethtool.c b/drivers/net/ethernet/freescale/gianfar_ethtool.c
index 241325c..27ed995 100644
--- a/drivers/net/ethernet/freescale/gianfar_ethtool.c
+++ b/drivers/net/ethernet/freescale/gianfar_ethtool.c
@@ -1492,7 +1492,7 @@ static int gfar_get_ts_info(struct net_device *dev,
 	struct gfar_private *priv = netdev_priv(dev);
 	struct platform_device *ptp_dev;
 	struct device_node *ptp_node;
-	struct qoriq_ptp *ptp = NULL;
+	struct ptp_qoriq *ptp = NULL;
 
 	info->phc_index = -1;
 
diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index 43416b2..8c10d0f 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -37,10 +37,10 @@
  * Register access functions
  */
 
-/* Caller must hold qoriq_ptp->lock. */
-static u64 tmr_cnt_read(struct qoriq_ptp *qoriq_ptp)
+/* Caller must hold ptp_qoriq->lock. */
+static u64 tmr_cnt_read(struct ptp_qoriq *ptp_qoriq)
 {
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u64 ns;
 	u32 lo, hi;
 
@@ -51,10 +51,10 @@ static u64 tmr_cnt_read(struct qoriq_ptp *qoriq_ptp)
 	return ns;
 }
 
-/* Caller must hold qoriq_ptp->lock. */
-static void tmr_cnt_write(struct qoriq_ptp *qoriq_ptp, u64 ns)
+/* Caller must hold ptp_qoriq->lock. */
+static void tmr_cnt_write(struct ptp_qoriq *ptp_qoriq, u64 ns)
 {
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 hi = ns >> 32;
 	u32 lo = ns & 0xffffffff;
 
@@ -62,36 +62,36 @@ static void tmr_cnt_write(struct qoriq_ptp *qoriq_ptp, u64 ns)
 	qoriq_write(&regs->ctrl_regs->tmr_cnt_h, hi);
 }
 
-/* Caller must hold qoriq_ptp->lock. */
-static void set_alarm(struct qoriq_ptp *qoriq_ptp)
+/* Caller must hold ptp_qoriq->lock. */
+static void set_alarm(struct ptp_qoriq *ptp_qoriq)
 {
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u64 ns;
 	u32 lo, hi;
 
-	ns = tmr_cnt_read(qoriq_ptp) + 1500000000ULL;
+	ns = tmr_cnt_read(ptp_qoriq) + 1500000000ULL;
 	ns = div_u64(ns, 1000000000UL) * 1000000000ULL;
-	ns -= qoriq_ptp->tclk_period;
+	ns -= ptp_qoriq->tclk_period;
 	hi = ns >> 32;
 	lo = ns & 0xffffffff;
 	qoriq_write(&regs->alarm_regs->tmr_alarm1_l, lo);
 	qoriq_write(&regs->alarm_regs->tmr_alarm1_h, hi);
 }
 
-/* Caller must hold qoriq_ptp->lock. */
-static void set_fipers(struct qoriq_ptp *qoriq_ptp)
+/* Caller must hold ptp_qoriq->lock. */
+static void set_fipers(struct ptp_qoriq *ptp_qoriq)
 {
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
-	set_alarm(qoriq_ptp);
-	qoriq_write(&regs->fiper_regs->tmr_fiper1, qoriq_ptp->tmr_fiper1);
-	qoriq_write(&regs->fiper_regs->tmr_fiper2, qoriq_ptp->tmr_fiper2);
+	set_alarm(ptp_qoriq);
+	qoriq_write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
+	qoriq_write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
 }
 
-static int extts_clean_up(struct qoriq_ptp *qoriq_ptp, int index,
+static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
 			  bool update_event)
 {
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	struct ptp_clock_event event;
 	void __iomem *reg_etts_l;
 	void __iomem *reg_etts_h;
@@ -122,11 +122,11 @@ static int extts_clean_up(struct qoriq_ptp *qoriq_ptp, int index,
 		if (update_event) {
 			event.timestamp = ((u64) hi) << 32;
 			event.timestamp |= lo;
-			ptp_clock_event(qoriq_ptp->clock, &event);
+			ptp_clock_event(ptp_qoriq->clock, &event);
 		}
 
 		stat = qoriq_read(&regs->ctrl_regs->tmr_stat);
-	} while (qoriq_ptp->extts_fifo_support && (stat & valid));
+	} while (ptp_qoriq->extts_fifo_support && (stat & valid));
 
 	return 0;
 }
@@ -137,61 +137,61 @@ static int extts_clean_up(struct qoriq_ptp *qoriq_ptp, int index,
 
 static irqreturn_t isr(int irq, void *priv)
 {
-	struct qoriq_ptp *qoriq_ptp = priv;
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = priv;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	struct ptp_clock_event event;
 	u64 ns;
 	u32 ack = 0, lo, hi, mask, val, irqs;
 
-	spin_lock(&qoriq_ptp->lock);
+	spin_lock(&ptp_qoriq->lock);
 
 	val = qoriq_read(&regs->ctrl_regs->tmr_tevent);
 	mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
 
-	spin_unlock(&qoriq_ptp->lock);
+	spin_unlock(&ptp_qoriq->lock);
 
 	irqs = val & mask;
 
 	if (irqs & ETS1) {
 		ack |= ETS1;
-		extts_clean_up(qoriq_ptp, 0, true);
+		extts_clean_up(ptp_qoriq, 0, true);
 	}
 
 	if (irqs & ETS2) {
 		ack |= ETS2;
-		extts_clean_up(qoriq_ptp, 1, true);
+		extts_clean_up(ptp_qoriq, 1, true);
 	}
 
 	if (irqs & ALM2) {
 		ack |= ALM2;
-		if (qoriq_ptp->alarm_value) {
+		if (ptp_qoriq->alarm_value) {
 			event.type = PTP_CLOCK_ALARM;
 			event.index = 0;
-			event.timestamp = qoriq_ptp->alarm_value;
-			ptp_clock_event(qoriq_ptp->clock, &event);
+			event.timestamp = ptp_qoriq->alarm_value;
+			ptp_clock_event(ptp_qoriq->clock, &event);
 		}
-		if (qoriq_ptp->alarm_interval) {
-			ns = qoriq_ptp->alarm_value + qoriq_ptp->alarm_interval;
+		if (ptp_qoriq->alarm_interval) {
+			ns = ptp_qoriq->alarm_value + ptp_qoriq->alarm_interval;
 			hi = ns >> 32;
 			lo = ns & 0xffffffff;
 			qoriq_write(&regs->alarm_regs->tmr_alarm2_l, lo);
 			qoriq_write(&regs->alarm_regs->tmr_alarm2_h, hi);
-			qoriq_ptp->alarm_value = ns;
+			ptp_qoriq->alarm_value = ns;
 		} else {
-			spin_lock(&qoriq_ptp->lock);
+			spin_lock(&ptp_qoriq->lock);
 			mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
 			mask &= ~ALM2EN;
 			qoriq_write(&regs->ctrl_regs->tmr_temask, mask);
-			spin_unlock(&qoriq_ptp->lock);
-			qoriq_ptp->alarm_value = 0;
-			qoriq_ptp->alarm_interval = 0;
+			spin_unlock(&ptp_qoriq->lock);
+			ptp_qoriq->alarm_value = 0;
+			ptp_qoriq->alarm_interval = 0;
 		}
 	}
 
 	if (irqs & PP1) {
 		ack |= PP1;
 		event.type = PTP_CLOCK_PPS;
-		ptp_clock_event(qoriq_ptp->clock, &event);
+		ptp_clock_event(ptp_qoriq->clock, &event);
 	}
 
 	if (ack) {
@@ -210,14 +210,14 @@ static int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
 	u64 adj, diff;
 	u32 tmr_add;
 	int neg_adj = 0;
-	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
 	if (scaled_ppm < 0) {
 		neg_adj = 1;
 		scaled_ppm = -scaled_ppm;
 	}
-	tmr_add = qoriq_ptp->tmr_add;
+	tmr_add = ptp_qoriq->tmr_add;
 	adj = tmr_add;
 
 	/* calculate diff as adj*(scaled_ppm/65536)/1000000
@@ -238,16 +238,16 @@ static int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta)
 {
 	s64 now;
 	unsigned long flags;
-	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
 
-	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
-	now = tmr_cnt_read(qoriq_ptp);
+	now = tmr_cnt_read(ptp_qoriq);
 	now += delta;
-	tmr_cnt_write(qoriq_ptp, now);
-	set_fipers(qoriq_ptp);
+	tmr_cnt_write(ptp_qoriq, now);
+	set_fipers(ptp_qoriq);
 
-	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
 	return 0;
 }
@@ -257,13 +257,13 @@ static int ptp_qoriq_gettime(struct ptp_clock_info *ptp,
 {
 	u64 ns;
 	unsigned long flags;
-	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
 
-	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
-	ns = tmr_cnt_read(qoriq_ptp);
+	ns = tmr_cnt_read(ptp_qoriq);
 
-	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
 	*ts = ns_to_timespec64(ns);
 
@@ -275,16 +275,16 @@ static int ptp_qoriq_settime(struct ptp_clock_info *ptp,
 {
 	u64 ns;
 	unsigned long flags;
-	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
+	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
 
 	ns = timespec64_to_ns(ts);
 
-	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
-	tmr_cnt_write(qoriq_ptp, ns);
-	set_fipers(qoriq_ptp);
+	tmr_cnt_write(ptp_qoriq, ns);
+	set_fipers(ptp_qoriq);
 
-	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
 	return 0;
 }
@@ -292,8 +292,8 @@ static int ptp_qoriq_settime(struct ptp_clock_info *ptp,
 static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 			      struct ptp_clock_request *rq, int on)
 {
-	struct qoriq_ptp *qoriq_ptp = container_of(ptp, struct qoriq_ptp, caps);
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	unsigned long flags;
 	u32 bit, mask = 0;
 
@@ -311,7 +311,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 		}
 
 		if (on)
-			extts_clean_up(qoriq_ptp, rq->extts.index, false);
+			extts_clean_up(ptp_qoriq, rq->extts.index, false);
 
 		break;
 	case PTP_CLK_REQ_PPS:
@@ -321,7 +321,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 		return -EOPNOTSUPP;
 	}
 
-	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
 	mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
 	if (on) {
@@ -333,7 +333,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 
 	qoriq_write(&regs->ctrl_regs->tmr_temask, mask);
 
-	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 	return 0;
 }
 
@@ -354,7 +354,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 };
 
 /**
- * qoriq_ptp_nominal_freq - calculate nominal frequency according to
+ * ptp_qoriq_nominal_freq - calculate nominal frequency according to
  *			    reference clock frequency
  *
  * @clk_src: reference clock frequency
@@ -365,7 +365,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
  *
  * Return the nominal frequency
  */
-static u32 qoriq_ptp_nominal_freq(u32 clk_src)
+static u32 ptp_qoriq_nominal_freq(u32 clk_src)
 {
 	u32 remainder = 0;
 
@@ -385,9 +385,9 @@ static u32 qoriq_ptp_nominal_freq(u32 clk_src)
 }
 
 /**
- * qoriq_ptp_auto_config - calculate a set of default configurations
+ * ptp_qoriq_auto_config - calculate a set of default configurations
  *
- * @qoriq_ptp: pointer to qoriq_ptp
+ * @ptp_qoriq: pointer to ptp_qoriq
  * @node: pointer to device_node
  *
  * If below dts properties are not provided, this function will be
@@ -401,7 +401,7 @@ static u32 qoriq_ptp_nominal_freq(u32 clk_src)
  *
  * Return 0 if success
  */
-static int qoriq_ptp_auto_config(struct qoriq_ptp *qoriq_ptp,
+static int ptp_qoriq_auto_config(struct ptp_qoriq *ptp_qoriq,
 				 struct device_node *node)
 {
 	struct clk *clk;
@@ -411,7 +411,7 @@ static int qoriq_ptp_auto_config(struct qoriq_ptp *qoriq_ptp,
 	u32 remainder = 0;
 	u32 clk_src = 0;
 
-	qoriq_ptp->cksel = DEFAULT_CKSEL;
+	ptp_qoriq->cksel = DEFAULT_CKSEL;
 
 	clk = of_clk_get(node, 0);
 	if (!IS_ERR(clk)) {
@@ -424,12 +424,12 @@ static int qoriq_ptp_auto_config(struct qoriq_ptp *qoriq_ptp,
 		return -EINVAL;
 	}
 
-	nominal_freq = qoriq_ptp_nominal_freq(clk_src);
+	nominal_freq = ptp_qoriq_nominal_freq(clk_src);
 	if (!nominal_freq)
 		return -EINVAL;
 
-	qoriq_ptp->tclk_period = 1000000000UL / nominal_freq;
-	qoriq_ptp->tmr_prsc = DEFAULT_TMR_PRSC;
+	ptp_qoriq->tclk_period = 1000000000UL / nominal_freq;
+	ptp_qoriq->tmr_prsc = DEFAULT_TMR_PRSC;
 
 	/* Calculate initial frequency compensation value for TMR_ADD register.
 	 * freq_comp = ceil(2^32 / freq_ratio)
@@ -440,171 +440,171 @@ static int qoriq_ptp_auto_config(struct qoriq_ptp *qoriq_ptp,
 	if (remainder)
 		freq_comp++;
 
-	qoriq_ptp->tmr_add = freq_comp;
-	qoriq_ptp->tmr_fiper1 = DEFAULT_FIPER1_PERIOD - qoriq_ptp->tclk_period;
-	qoriq_ptp->tmr_fiper2 = DEFAULT_FIPER2_PERIOD - qoriq_ptp->tclk_period;
+	ptp_qoriq->tmr_add = freq_comp;
+	ptp_qoriq->tmr_fiper1 = DEFAULT_FIPER1_PERIOD - ptp_qoriq->tclk_period;
+	ptp_qoriq->tmr_fiper2 = DEFAULT_FIPER2_PERIOD - ptp_qoriq->tclk_period;
 
 	/* max_adj = 1000000000 * (freq_ratio - 1.0) - 1
 	 * freq_ratio = reference_clock_freq / nominal_freq
 	 */
 	max_adj = 1000000000ULL * (clk_src - nominal_freq);
 	max_adj = div_u64(max_adj, nominal_freq) - 1;
-	qoriq_ptp->caps.max_adj = max_adj;
+	ptp_qoriq->caps.max_adj = max_adj;
 
 	return 0;
 }
 
-static int qoriq_ptp_probe(struct platform_device *dev)
+static int ptp_qoriq_probe(struct platform_device *dev)
 {
 	struct device_node *node = dev->dev.of_node;
-	struct qoriq_ptp *qoriq_ptp;
-	struct qoriq_ptp_registers *regs;
+	struct ptp_qoriq *ptp_qoriq;
+	struct ptp_qoriq_registers *regs;
 	struct timespec64 now;
 	int err = -ENOMEM;
 	u32 tmr_ctrl;
 	unsigned long flags;
 	void __iomem *base;
 
-	qoriq_ptp = kzalloc(sizeof(*qoriq_ptp), GFP_KERNEL);
-	if (!qoriq_ptp)
+	ptp_qoriq = kzalloc(sizeof(*ptp_qoriq), GFP_KERNEL);
+	if (!ptp_qoriq)
 		goto no_memory;
 
 	err = -EINVAL;
 
-	qoriq_ptp->dev = &dev->dev;
-	qoriq_ptp->caps = ptp_qoriq_caps;
+	ptp_qoriq->dev = &dev->dev;
+	ptp_qoriq->caps = ptp_qoriq_caps;
 
-	if (of_property_read_u32(node, "fsl,cksel", &qoriq_ptp->cksel))
-		qoriq_ptp->cksel = DEFAULT_CKSEL;
+	if (of_property_read_u32(node, "fsl,cksel", &ptp_qoriq->cksel))
+		ptp_qoriq->cksel = DEFAULT_CKSEL;
 
 	if (of_property_read_bool(node, "fsl,extts-fifo"))
-		qoriq_ptp->extts_fifo_support = true;
+		ptp_qoriq->extts_fifo_support = true;
 	else
-		qoriq_ptp->extts_fifo_support = false;
+		ptp_qoriq->extts_fifo_support = false;
 
 	if (of_property_read_u32(node,
-				 "fsl,tclk-period", &qoriq_ptp->tclk_period) ||
+				 "fsl,tclk-period", &ptp_qoriq->tclk_period) ||
 	    of_property_read_u32(node,
-				 "fsl,tmr-prsc", &qoriq_ptp->tmr_prsc) ||
+				 "fsl,tmr-prsc", &ptp_qoriq->tmr_prsc) ||
 	    of_property_read_u32(node,
-				 "fsl,tmr-add", &qoriq_ptp->tmr_add) ||
+				 "fsl,tmr-add", &ptp_qoriq->tmr_add) ||
 	    of_property_read_u32(node,
-				 "fsl,tmr-fiper1", &qoriq_ptp->tmr_fiper1) ||
+				 "fsl,tmr-fiper1", &ptp_qoriq->tmr_fiper1) ||
 	    of_property_read_u32(node,
-				 "fsl,tmr-fiper2", &qoriq_ptp->tmr_fiper2) ||
+				 "fsl,tmr-fiper2", &ptp_qoriq->tmr_fiper2) ||
 	    of_property_read_u32(node,
-				 "fsl,max-adj", &qoriq_ptp->caps.max_adj)) {
+				 "fsl,max-adj", &ptp_qoriq->caps.max_adj)) {
 		pr_warn("device tree node missing required elements, try automatic configuration\n");
 
-		if (qoriq_ptp_auto_config(qoriq_ptp, node))
+		if (ptp_qoriq_auto_config(ptp_qoriq, node))
 			goto no_config;
 	}
 
 	err = -ENODEV;
 
-	qoriq_ptp->irq = platform_get_irq(dev, 0);
+	ptp_qoriq->irq = platform_get_irq(dev, 0);
 
-	if (qoriq_ptp->irq < 0) {
+	if (ptp_qoriq->irq < 0) {
 		pr_err("irq not in device tree\n");
 		goto no_node;
 	}
-	if (request_irq(qoriq_ptp->irq, isr, IRQF_SHARED, DRIVER, qoriq_ptp)) {
+	if (request_irq(ptp_qoriq->irq, isr, IRQF_SHARED, DRIVER, ptp_qoriq)) {
 		pr_err("request_irq failed\n");
 		goto no_node;
 	}
 
-	qoriq_ptp->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	if (!qoriq_ptp->rsrc) {
+	ptp_qoriq->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (!ptp_qoriq->rsrc) {
 		pr_err("no resource\n");
 		goto no_resource;
 	}
-	if (request_resource(&iomem_resource, qoriq_ptp->rsrc)) {
+	if (request_resource(&iomem_resource, ptp_qoriq->rsrc)) {
 		pr_err("resource busy\n");
 		goto no_resource;
 	}
 
-	spin_lock_init(&qoriq_ptp->lock);
+	spin_lock_init(&ptp_qoriq->lock);
 
-	base = ioremap(qoriq_ptp->rsrc->start,
-		       resource_size(qoriq_ptp->rsrc));
+	base = ioremap(ptp_qoriq->rsrc->start,
+		       resource_size(ptp_qoriq->rsrc));
 	if (!base) {
 		pr_err("ioremap ptp registers failed\n");
 		goto no_ioremap;
 	}
 
-	qoriq_ptp->base = base;
+	ptp_qoriq->base = base;
 
 	if (of_device_is_compatible(node, "fsl,fman-ptp-timer")) {
-		qoriq_ptp->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
-		qoriq_ptp->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
-		qoriq_ptp->regs.fiper_regs = base + FMAN_FIPER_REGS_OFFSET;
-		qoriq_ptp->regs.etts_regs = base + FMAN_ETTS_REGS_OFFSET;
+		ptp_qoriq->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
+		ptp_qoriq->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
+		ptp_qoriq->regs.fiper_regs = base + FMAN_FIPER_REGS_OFFSET;
+		ptp_qoriq->regs.etts_regs = base + FMAN_ETTS_REGS_OFFSET;
 	} else {
-		qoriq_ptp->regs.ctrl_regs = base + CTRL_REGS_OFFSET;
-		qoriq_ptp->regs.alarm_regs = base + ALARM_REGS_OFFSET;
-		qoriq_ptp->regs.fiper_regs = base + FIPER_REGS_OFFSET;
-		qoriq_ptp->regs.etts_regs = base + ETTS_REGS_OFFSET;
+		ptp_qoriq->regs.ctrl_regs = base + CTRL_REGS_OFFSET;
+		ptp_qoriq->regs.alarm_regs = base + ALARM_REGS_OFFSET;
+		ptp_qoriq->regs.fiper_regs = base + FIPER_REGS_OFFSET;
+		ptp_qoriq->regs.etts_regs = base + ETTS_REGS_OFFSET;
 	}
 
 	ktime_get_real_ts64(&now);
-	ptp_qoriq_settime(&qoriq_ptp->caps, &now);
+	ptp_qoriq_settime(&ptp_qoriq->caps, &now);
 
 	tmr_ctrl =
-	  (qoriq_ptp->tclk_period & TCLK_PERIOD_MASK) << TCLK_PERIOD_SHIFT |
-	  (qoriq_ptp->cksel & CKSEL_MASK) << CKSEL_SHIFT;
+	  (ptp_qoriq->tclk_period & TCLK_PERIOD_MASK) << TCLK_PERIOD_SHIFT |
+	  (ptp_qoriq->cksel & CKSEL_MASK) << CKSEL_SHIFT;
 
-	spin_lock_irqsave(&qoriq_ptp->lock, flags);
+	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
-	regs = &qoriq_ptp->regs;
+	regs = &ptp_qoriq->regs;
 	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   tmr_ctrl);
-	qoriq_write(&regs->ctrl_regs->tmr_add,    qoriq_ptp->tmr_add);
-	qoriq_write(&regs->ctrl_regs->tmr_prsc,   qoriq_ptp->tmr_prsc);
-	qoriq_write(&regs->fiper_regs->tmr_fiper1, qoriq_ptp->tmr_fiper1);
-	qoriq_write(&regs->fiper_regs->tmr_fiper2, qoriq_ptp->tmr_fiper2);
-	set_alarm(qoriq_ptp);
+	qoriq_write(&regs->ctrl_regs->tmr_add,    ptp_qoriq->tmr_add);
+	qoriq_write(&regs->ctrl_regs->tmr_prsc,   ptp_qoriq->tmr_prsc);
+	qoriq_write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
+	qoriq_write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
+	set_alarm(ptp_qoriq);
 	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   tmr_ctrl|FIPERST|RTPE|TE|FRD);
 
-	spin_unlock_irqrestore(&qoriq_ptp->lock, flags);
+	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
-	qoriq_ptp->clock = ptp_clock_register(&qoriq_ptp->caps, &dev->dev);
-	if (IS_ERR(qoriq_ptp->clock)) {
-		err = PTR_ERR(qoriq_ptp->clock);
+	ptp_qoriq->clock = ptp_clock_register(&ptp_qoriq->caps, &dev->dev);
+	if (IS_ERR(ptp_qoriq->clock)) {
+		err = PTR_ERR(ptp_qoriq->clock);
 		goto no_clock;
 	}
-	qoriq_ptp->phc_index = ptp_clock_index(qoriq_ptp->clock);
+	ptp_qoriq->phc_index = ptp_clock_index(ptp_qoriq->clock);
 
-	ptp_qoriq_create_debugfs(qoriq_ptp);
-	platform_set_drvdata(dev, qoriq_ptp);
+	ptp_qoriq_create_debugfs(ptp_qoriq);
+	platform_set_drvdata(dev, ptp_qoriq);
 
 	return 0;
 
 no_clock:
-	iounmap(qoriq_ptp->base);
+	iounmap(ptp_qoriq->base);
 no_ioremap:
-	release_resource(qoriq_ptp->rsrc);
+	release_resource(ptp_qoriq->rsrc);
 no_resource:
-	free_irq(qoriq_ptp->irq, qoriq_ptp);
+	free_irq(ptp_qoriq->irq, ptp_qoriq);
 no_config:
 no_node:
-	kfree(qoriq_ptp);
+	kfree(ptp_qoriq);
 no_memory:
 	return err;
 }
 
-static int qoriq_ptp_remove(struct platform_device *dev)
+static int ptp_qoriq_remove(struct platform_device *dev)
 {
-	struct qoriq_ptp *qoriq_ptp = platform_get_drvdata(dev);
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = platform_get_drvdata(dev);
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
 	qoriq_write(&regs->ctrl_regs->tmr_temask, 0);
 	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   0);
 
-	ptp_qoriq_remove_debugfs(qoriq_ptp);
-	ptp_clock_unregister(qoriq_ptp->clock);
-	iounmap(qoriq_ptp->base);
-	release_resource(qoriq_ptp->rsrc);
-	free_irq(qoriq_ptp->irq, qoriq_ptp);
-	kfree(qoriq_ptp);
+	ptp_qoriq_remove_debugfs(ptp_qoriq);
+	ptp_clock_unregister(ptp_qoriq->clock);
+	iounmap(ptp_qoriq->base);
+	release_resource(ptp_qoriq->rsrc);
+	free_irq(ptp_qoriq->irq, ptp_qoriq);
+	kfree(ptp_qoriq);
 
 	return 0;
 }
@@ -616,16 +616,16 @@ static int qoriq_ptp_remove(struct platform_device *dev)
 };
 MODULE_DEVICE_TABLE(of, match_table);
 
-static struct platform_driver qoriq_ptp_driver = {
+static struct platform_driver ptp_qoriq_driver = {
 	.driver = {
 		.name		= "ptp_qoriq",
 		.of_match_table	= match_table,
 	},
-	.probe       = qoriq_ptp_probe,
-	.remove      = qoriq_ptp_remove,
+	.probe       = ptp_qoriq_probe,
+	.remove      = ptp_qoriq_remove,
 };
 
-module_platform_driver(qoriq_ptp_driver);
+module_platform_driver(ptp_qoriq_driver);
 
 MODULE_AUTHOR("Richard Cochran <richardcochran@gmail.com>");
 MODULE_DESCRIPTION("PTP clock for Freescale QorIQ 1588 timer");
diff --git a/drivers/ptp/ptp_qoriq_debugfs.c b/drivers/ptp/ptp_qoriq_debugfs.c
index 9705950..3a70daf 100644
--- a/drivers/ptp/ptp_qoriq_debugfs.c
+++ b/drivers/ptp/ptp_qoriq_debugfs.c
@@ -7,8 +7,8 @@
 
 static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
 {
-	struct qoriq_ptp *qoriq_ptp = data;
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = data;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
 	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
@@ -19,8 +19,8 @@ static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
 
 static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
 {
-	struct qoriq_ptp *qoriq_ptp = data;
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = data;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
 	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
@@ -38,8 +38,8 @@ static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
 
 static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
 {
-	struct qoriq_ptp *qoriq_ptp = data;
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = data;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
 	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
@@ -50,8 +50,8 @@ static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
 
 static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
 {
-	struct qoriq_ptp *qoriq_ptp = data;
-	struct qoriq_ptp_registers *regs = &qoriq_ptp->regs;
+	struct ptp_qoriq *ptp_qoriq = data;
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
 	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
@@ -67,35 +67,35 @@ static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
 DEFINE_DEBUGFS_ATTRIBUTE(ptp_qoriq_fiper2_fops, ptp_qoriq_fiper2_lpbk_get,
 			 ptp_qoriq_fiper2_lpbk_set, "%llu\n");
 
-void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
+void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq)
 {
 	struct dentry *root;
 
-	root = debugfs_create_dir(dev_name(qoriq_ptp->dev), NULL);
+	root = debugfs_create_dir(dev_name(ptp_qoriq->dev), NULL);
 	if (IS_ERR(root))
 		return;
 	if (!root)
 		goto err_root;
 
-	qoriq_ptp->debugfs_root = root;
+	ptp_qoriq->debugfs_root = root;
 
 	if (!debugfs_create_file_unsafe("fiper1-loopback", 0600, root,
-					qoriq_ptp, &ptp_qoriq_fiper1_fops))
+					ptp_qoriq, &ptp_qoriq_fiper1_fops))
 		goto err_node;
 	if (!debugfs_create_file_unsafe("fiper2-loopback", 0600, root,
-					qoriq_ptp, &ptp_qoriq_fiper2_fops))
+					ptp_qoriq, &ptp_qoriq_fiper2_fops))
 		goto err_node;
 	return;
 
 err_node:
 	debugfs_remove_recursive(root);
-	qoriq_ptp->debugfs_root = NULL;
+	ptp_qoriq->debugfs_root = NULL;
 err_root:
-	dev_err(qoriq_ptp->dev, "failed to initialize debugfs\n");
+	dev_err(ptp_qoriq->dev, "failed to initialize debugfs\n");
 }
 
-void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp)
+void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
 {
-	debugfs_remove_recursive(qoriq_ptp->debugfs_root);
-	qoriq_ptp->debugfs_root = NULL;
+	debugfs_remove_recursive(ptp_qoriq->debugfs_root);
+	ptp_qoriq->debugfs_root = NULL;
 }
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 94e9797..c2a32d9 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -49,7 +49,7 @@ struct etts_regs {
 	u32 tmr_etts2_l;  /* Timestamp of general purpose external trigger */
 };
 
-struct qoriq_ptp_registers {
+struct ptp_qoriq_registers {
 	struct ctrl_regs __iomem *ctrl_regs;
 	struct alarm_regs __iomem *alarm_regs;
 	struct fiper_regs __iomem *fiper_regs;
@@ -136,9 +136,9 @@ struct qoriq_ptp_registers {
 #define DEFAULT_FIPER1_PERIOD	1000000000
 #define DEFAULT_FIPER2_PERIOD	100000
 
-struct qoriq_ptp {
+struct ptp_qoriq {
 	void __iomem *base;
-	struct qoriq_ptp_registers regs;
+	struct ptp_qoriq_registers regs;
 	spinlock_t lock; /* protects regs */
 	struct ptp_clock *clock;
 	struct ptp_clock_info caps;
@@ -172,12 +172,12 @@ static inline void qoriq_write(unsigned __iomem *addr, u32 val)
 }
 
 #ifdef CONFIG_DEBUG_FS
-void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp);
-void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp);
+void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq);
+void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq);
 #else
-static inline void ptp_qoriq_create_debugfs(struct qoriq_ptp *qoriq_ptp)
+static inline void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq)
 { }
-static inline void ptp_qoriq_remove_debugfs(struct qoriq_ptp *qoriq_ptp)
+static inline void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq)
 { }
 #endif
 
-- 
1.7.1

[v3, 2/9] ptp_qoriq: make ptp operations global

[Yangbo Lu]

This patch is to make functions of ptp operations global,
so that ENETC PTP driver which is a PCI driver for same
1588 timer IP block could reuse them.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- None.
---
 drivers/ptp/ptp_qoriq.c       |   27 ++++++++++++++++-----------
 include/linux/fsl/ptp_qoriq.h |    9 +++++++++
 2 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index 8c10d0f..1f3e73e 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -22,7 +22,6 @@
 
 #include <linux/device.h>
 #include <linux/hrtimer.h>
-#include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -135,7 +134,7 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
  * Interrupt service routine
  */
 
-static irqreturn_t isr(int irq, void *priv)
+irqreturn_t ptp_qoriq_isr(int irq, void *priv)
 {
 	struct ptp_qoriq *ptp_qoriq = priv;
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
@@ -200,12 +199,13 @@ static irqreturn_t isr(int irq, void *priv)
 	} else
 		return IRQ_NONE;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_isr);
 
 /*
  * PTP clock operations
  */
 
-static int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
+int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
 {
 	u64 adj, diff;
 	u32 tmr_add;
@@ -233,8 +233,9 @@ static int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_adjfine);
 
-static int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta)
+int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta)
 {
 	s64 now;
 	unsigned long flags;
@@ -251,9 +252,9 @@ static int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta)
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_adjtime);
 
-static int ptp_qoriq_gettime(struct ptp_clock_info *ptp,
-			       struct timespec64 *ts)
+int ptp_qoriq_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts)
 {
 	u64 ns;
 	unsigned long flags;
@@ -269,9 +270,10 @@ static int ptp_qoriq_gettime(struct ptp_clock_info *ptp,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_gettime);
 
-static int ptp_qoriq_settime(struct ptp_clock_info *ptp,
-			       const struct timespec64 *ts)
+int ptp_qoriq_settime(struct ptp_clock_info *ptp,
+		      const struct timespec64 *ts)
 {
 	u64 ns;
 	unsigned long flags;
@@ -288,9 +290,10 @@ static int ptp_qoriq_settime(struct ptp_clock_info *ptp,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_settime);
 
-static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
-			      struct ptp_clock_request *rq, int on)
+int ptp_qoriq_enable(struct ptp_clock_info *ptp,
+		     struct ptp_clock_request *rq, int on)
 {
 	struct ptp_qoriq *ptp_qoriq = container_of(ptp, struct ptp_qoriq, caps);
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
@@ -336,6 +339,7 @@ static int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ptp_qoriq_enable);
 
 static const struct ptp_clock_info ptp_qoriq_caps = {
 	.owner		= THIS_MODULE,
@@ -508,7 +512,8 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 		pr_err("irq not in device tree\n");
 		goto no_node;
 	}
-	if (request_irq(ptp_qoriq->irq, isr, IRQF_SHARED, DRIVER, ptp_qoriq)) {
+	if (request_irq(ptp_qoriq->irq, ptp_qoriq_isr, IRQF_SHARED,
+			DRIVER, ptp_qoriq)) {
 		pr_err("request_irq failed\n");
 		goto no_node;
 	}
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index c2a32d9..75e6f05 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -7,6 +7,7 @@
 #define __PTP_QORIQ_H__
 
 #include <linux/io.h>
+#include <linux/interrupt.h>
 #include <linux/ptp_clock_kernel.h>
 
 /*
@@ -171,6 +172,14 @@ static inline void qoriq_write(unsigned __iomem *addr, u32 val)
 	iowrite32be(val, addr);
 }
 
+irqreturn_t ptp_qoriq_isr(int irq, void *priv);
+int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm);
+int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta);
+int ptp_qoriq_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts);
+int ptp_qoriq_settime(struct ptp_clock_info *ptp,
+		      const struct timespec64 *ts);
+int ptp_qoriq_enable(struct ptp_clock_info *ptp,
+		     struct ptp_clock_request *rq, int on);
 #ifdef CONFIG_DEBUG_FS
 void ptp_qoriq_create_debugfs(struct ptp_qoriq *ptp_qoriq);
 void ptp_qoriq_remove_debugfs(struct ptp_qoriq *ptp_qoriq);
-- 
1.7.1

[v3, 3/9] ptp_qoriq: convert to use ptp_qoriq_init/free

[Yangbo Lu]

Moved QorIQ PTP clock initialization/free into new functions
ptp_qoriq_init()/ptp_qoriq_free(). These functions could also
be reused by ENETC PTP drvier which is a PCI driver for same
1588 timer IP block.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- Added ptp_qoriq_free().
---
 drivers/ptp/ptp_qoriq.c       |  144 ++++++++++++++++++++++-------------------
 include/linux/fsl/ptp_qoriq.h |    3 +
 2 files changed, 80 insertions(+), 67 deletions(-)

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index 1f3e73e..db4f929 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -458,25 +458,17 @@ static int ptp_qoriq_auto_config(struct ptp_qoriq *ptp_qoriq,
 	return 0;
 }
 
-static int ptp_qoriq_probe(struct platform_device *dev)
+int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
+		   const struct ptp_clock_info caps)
 {
-	struct device_node *node = dev->dev.of_node;
-	struct ptp_qoriq *ptp_qoriq;
+	struct device_node *node = ptp_qoriq->dev->of_node;
 	struct ptp_qoriq_registers *regs;
 	struct timespec64 now;
-	int err = -ENOMEM;
-	u32 tmr_ctrl;
 	unsigned long flags;
-	void __iomem *base;
-
-	ptp_qoriq = kzalloc(sizeof(*ptp_qoriq), GFP_KERNEL);
-	if (!ptp_qoriq)
-		goto no_memory;
-
-	err = -EINVAL;
+	u32 tmr_ctrl;
 
-	ptp_qoriq->dev = &dev->dev;
-	ptp_qoriq->caps = ptp_qoriq_caps;
+	ptp_qoriq->base = base;
+	ptp_qoriq->caps = caps;
 
 	if (of_property_read_u32(node, "fsl,cksel", &ptp_qoriq->cksel))
 		ptp_qoriq->cksel = DEFAULT_CKSEL;
@@ -501,44 +493,9 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 		pr_warn("device tree node missing required elements, try automatic configuration\n");
 
 		if (ptp_qoriq_auto_config(ptp_qoriq, node))
-			goto no_config;
+			return -ENODEV;
 	}
 
-	err = -ENODEV;
-
-	ptp_qoriq->irq = platform_get_irq(dev, 0);
-
-	if (ptp_qoriq->irq < 0) {
-		pr_err("irq not in device tree\n");
-		goto no_node;
-	}
-	if (request_irq(ptp_qoriq->irq, ptp_qoriq_isr, IRQF_SHARED,
-			DRIVER, ptp_qoriq)) {
-		pr_err("request_irq failed\n");
-		goto no_node;
-	}
-
-	ptp_qoriq->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
-	if (!ptp_qoriq->rsrc) {
-		pr_err("no resource\n");
-		goto no_resource;
-	}
-	if (request_resource(&iomem_resource, ptp_qoriq->rsrc)) {
-		pr_err("resource busy\n");
-		goto no_resource;
-	}
-
-	spin_lock_init(&ptp_qoriq->lock);
-
-	base = ioremap(ptp_qoriq->rsrc->start,
-		       resource_size(ptp_qoriq->rsrc));
-	if (!base) {
-		pr_err("ioremap ptp registers failed\n");
-		goto no_ioremap;
-	}
-
-	ptp_qoriq->base = base;
-
 	if (of_device_is_compatible(node, "fsl,fman-ptp-timer")) {
 		ptp_qoriq->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
 		ptp_qoriq->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
@@ -558,6 +515,7 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 	  (ptp_qoriq->tclk_period & TCLK_PERIOD_MASK) << TCLK_PERIOD_SHIFT |
 	  (ptp_qoriq->cksel & CKSEL_MASK) << CKSEL_SHIFT;
 
+	spin_lock_init(&ptp_qoriq->lock);
 	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
 	regs = &ptp_qoriq->regs;
@@ -571,16 +529,77 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 
 	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
-	ptp_qoriq->clock = ptp_clock_register(&ptp_qoriq->caps, &dev->dev);
-	if (IS_ERR(ptp_qoriq->clock)) {
-		err = PTR_ERR(ptp_qoriq->clock);
-		goto no_clock;
-	}
-	ptp_qoriq->phc_index = ptp_clock_index(ptp_qoriq->clock);
+	ptp_qoriq->clock = ptp_clock_register(&ptp_qoriq->caps, ptp_qoriq->dev);
+	if (IS_ERR(ptp_qoriq->clock))
+		return PTR_ERR(ptp_qoriq->clock);
 
+	ptp_qoriq->phc_index = ptp_clock_index(ptp_qoriq->clock);
 	ptp_qoriq_create_debugfs(ptp_qoriq);
-	platform_set_drvdata(dev, ptp_qoriq);
+	return 0;
+}
+EXPORT_SYMBOL_GPL(ptp_qoriq_init);
+
+void ptp_qoriq_free(struct ptp_qoriq *ptp_qoriq)
+{
+	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
+
+	qoriq_write(&regs->ctrl_regs->tmr_temask, 0);
+	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   0);
+
+	ptp_qoriq_remove_debugfs(ptp_qoriq);
+	ptp_clock_unregister(ptp_qoriq->clock);
+	iounmap(ptp_qoriq->base);
+	free_irq(ptp_qoriq->irq, ptp_qoriq);
+}
+EXPORT_SYMBOL_GPL(ptp_qoriq_free);
+
+static int ptp_qoriq_probe(struct platform_device *dev)
+{
+	struct ptp_qoriq *ptp_qoriq;
+	int err = -ENOMEM;
+	void __iomem *base;
 
+	ptp_qoriq = kzalloc(sizeof(*ptp_qoriq), GFP_KERNEL);
+	if (!ptp_qoriq)
+		goto no_memory;
+
+	ptp_qoriq->dev = &dev->dev;
+
+	err = -ENODEV;
+
+	ptp_qoriq->irq = platform_get_irq(dev, 0);
+	if (ptp_qoriq->irq < 0) {
+		pr_err("irq not in device tree\n");
+		goto no_node;
+	}
+	if (request_irq(ptp_qoriq->irq, ptp_qoriq_isr, IRQF_SHARED,
+			DRIVER, ptp_qoriq)) {
+		pr_err("request_irq failed\n");
+		goto no_node;
+	}
+
+	ptp_qoriq->rsrc = platform_get_resource(dev, IORESOURCE_MEM, 0);
+	if (!ptp_qoriq->rsrc) {
+		pr_err("no resource\n");
+		goto no_resource;
+	}
+	if (request_resource(&iomem_resource, ptp_qoriq->rsrc)) {
+		pr_err("resource busy\n");
+		goto no_resource;
+	}
+
+	base = ioremap(ptp_qoriq->rsrc->start,
+		       resource_size(ptp_qoriq->rsrc));
+	if (!base) {
+		pr_err("ioremap ptp registers failed\n");
+		goto no_ioremap;
+	}
+
+	err = ptp_qoriq_init(ptp_qoriq, base, ptp_qoriq_caps);
+	if (err)
+		goto no_clock;
+
+	platform_set_drvdata(dev, ptp_qoriq);
 	return 0;
 
 no_clock:
@@ -589,7 +608,6 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 	release_resource(ptp_qoriq->rsrc);
 no_resource:
 	free_irq(ptp_qoriq->irq, ptp_qoriq);
-no_config:
 no_node:
 	kfree(ptp_qoriq);
 no_memory:
@@ -599,18 +617,10 @@ static int ptp_qoriq_probe(struct platform_device *dev)
 static int ptp_qoriq_remove(struct platform_device *dev)
 {
 	struct ptp_qoriq *ptp_qoriq = platform_get_drvdata(dev);
-	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
-	qoriq_write(&regs->ctrl_regs->tmr_temask, 0);
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   0);
-
-	ptp_qoriq_remove_debugfs(ptp_qoriq);
-	ptp_clock_unregister(ptp_qoriq->clock);
-	iounmap(ptp_qoriq->base);
+	ptp_qoriq_free(ptp_qoriq);
 	release_resource(ptp_qoriq->rsrc);
-	free_irq(ptp_qoriq->irq, ptp_qoriq);
 	kfree(ptp_qoriq);
-
 	return 0;
 }
 
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 75e6f05..757aec3 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -173,6 +173,9 @@ static inline void qoriq_write(unsigned __iomem *addr, u32 val)
 }
 
 irqreturn_t ptp_qoriq_isr(int irq, void *priv);
+int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
+		   const struct ptp_clock_info caps);
+void ptp_qoriq_free(struct ptp_qoriq *ptp_qoriq);
 int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm);
 int ptp_qoriq_adjtime(struct ptp_clock_info *ptp, s64 delta);
 int ptp_qoriq_gettime(struct ptp_clock_info *ptp, struct timespec64 *ts);
-- 
1.7.1

[v3, 4/9] ptp_qoriq: add little enadian support

[Yangbo Lu]

There is QorIQ 1588 timer IP block on the new ENETC Ethernet
controller. However it uses little endian mode which is different
with before. This patch is to add little endian support for the
driver by using "little-endian" dts node property.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- Rebased.
---
 drivers/ptp/ptp_qoriq.c         |   69 ++++++++++++++++++++++-----------------
 drivers/ptp/ptp_qoriq_debugfs.c |   12 +++---
 include/linux/fsl/ptp_qoriq.h   |   21 ++++++++---
 3 files changed, 60 insertions(+), 42 deletions(-)

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index db4f929..ed4dc39 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -43,8 +43,8 @@ static u64 tmr_cnt_read(struct ptp_qoriq *ptp_qoriq)
 	u64 ns;
 	u32 lo, hi;
 
-	lo = qoriq_read(&regs->ctrl_regs->tmr_cnt_l);
-	hi = qoriq_read(&regs->ctrl_regs->tmr_cnt_h);
+	lo = ptp_qoriq->read(&regs->ctrl_regs->tmr_cnt_l);
+	hi = ptp_qoriq->read(&regs->ctrl_regs->tmr_cnt_h);
 	ns = ((u64) hi) << 32;
 	ns |= lo;
 	return ns;
@@ -57,8 +57,8 @@ static void tmr_cnt_write(struct ptp_qoriq *ptp_qoriq, u64 ns)
 	u32 hi = ns >> 32;
 	u32 lo = ns & 0xffffffff;
 
-	qoriq_write(&regs->ctrl_regs->tmr_cnt_l, lo);
-	qoriq_write(&regs->ctrl_regs->tmr_cnt_h, hi);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_cnt_l, lo);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_cnt_h, hi);
 }
 
 /* Caller must hold ptp_qoriq->lock. */
@@ -73,8 +73,8 @@ static void set_alarm(struct ptp_qoriq *ptp_qoriq)
 	ns -= ptp_qoriq->tclk_period;
 	hi = ns >> 32;
 	lo = ns & 0xffffffff;
-	qoriq_write(&regs->alarm_regs->tmr_alarm1_l, lo);
-	qoriq_write(&regs->alarm_regs->tmr_alarm1_h, hi);
+	ptp_qoriq->write(&regs->alarm_regs->tmr_alarm1_l, lo);
+	ptp_qoriq->write(&regs->alarm_regs->tmr_alarm1_h, hi);
 }
 
 /* Caller must hold ptp_qoriq->lock. */
@@ -83,8 +83,8 @@ static void set_fipers(struct ptp_qoriq *ptp_qoriq)
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
 	set_alarm(ptp_qoriq);
-	qoriq_write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
-	qoriq_write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
+	ptp_qoriq->write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
+	ptp_qoriq->write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
 }
 
 static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
@@ -115,8 +115,8 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
 	event.index = index;
 
 	do {
-		lo = qoriq_read(reg_etts_l);
-		hi = qoriq_read(reg_etts_h);
+		lo = ptp_qoriq->read(reg_etts_l);
+		hi = ptp_qoriq->read(reg_etts_h);
 
 		if (update_event) {
 			event.timestamp = ((u64) hi) << 32;
@@ -124,7 +124,7 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index,
 			ptp_clock_event(ptp_qoriq->clock, &event);
 		}
 
-		stat = qoriq_read(&regs->ctrl_regs->tmr_stat);
+		stat = ptp_qoriq->read(&regs->ctrl_regs->tmr_stat);
 	} while (ptp_qoriq->extts_fifo_support && (stat & valid));
 
 	return 0;
@@ -144,8 +144,8 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
 
 	spin_lock(&ptp_qoriq->lock);
 
-	val = qoriq_read(&regs->ctrl_regs->tmr_tevent);
-	mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
+	val = ptp_qoriq->read(&regs->ctrl_regs->tmr_tevent);
+	mask = ptp_qoriq->read(&regs->ctrl_regs->tmr_temask);
 
 	spin_unlock(&ptp_qoriq->lock);
 
@@ -173,14 +173,14 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
 			ns = ptp_qoriq->alarm_value + ptp_qoriq->alarm_interval;
 			hi = ns >> 32;
 			lo = ns & 0xffffffff;
-			qoriq_write(&regs->alarm_regs->tmr_alarm2_l, lo);
-			qoriq_write(&regs->alarm_regs->tmr_alarm2_h, hi);
+			ptp_qoriq->write(&regs->alarm_regs->tmr_alarm2_l, lo);
+			ptp_qoriq->write(&regs->alarm_regs->tmr_alarm2_h, hi);
 			ptp_qoriq->alarm_value = ns;
 		} else {
 			spin_lock(&ptp_qoriq->lock);
-			mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
+			mask = ptp_qoriq->read(&regs->ctrl_regs->tmr_temask);
 			mask &= ~ALM2EN;
-			qoriq_write(&regs->ctrl_regs->tmr_temask, mask);
+			ptp_qoriq->write(&regs->ctrl_regs->tmr_temask, mask);
 			spin_unlock(&ptp_qoriq->lock);
 			ptp_qoriq->alarm_value = 0;
 			ptp_qoriq->alarm_interval = 0;
@@ -194,7 +194,7 @@ irqreturn_t ptp_qoriq_isr(int irq, void *priv)
 	}
 
 	if (ack) {
-		qoriq_write(&regs->ctrl_regs->tmr_tevent, ack);
+		ptp_qoriq->write(&regs->ctrl_regs->tmr_tevent, ack);
 		return IRQ_HANDLED;
 	} else
 		return IRQ_NONE;
@@ -229,7 +229,7 @@ int ptp_qoriq_adjfine(struct ptp_clock_info *ptp, long scaled_ppm)
 
 	tmr_add = neg_adj ? tmr_add - diff : tmr_add + diff;
 
-	qoriq_write(&regs->ctrl_regs->tmr_add, tmr_add);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_add, tmr_add);
 
 	return 0;
 }
@@ -326,15 +326,15 @@ int ptp_qoriq_enable(struct ptp_clock_info *ptp,
 
 	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
-	mask = qoriq_read(&regs->ctrl_regs->tmr_temask);
+	mask = ptp_qoriq->read(&regs->ctrl_regs->tmr_temask);
 	if (on) {
 		mask |= bit;
-		qoriq_write(&regs->ctrl_regs->tmr_tevent, bit);
+		ptp_qoriq->write(&regs->ctrl_regs->tmr_tevent, bit);
 	} else {
 		mask &= ~bit;
 	}
 
-	qoriq_write(&regs->ctrl_regs->tmr_temask, mask);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_temask, mask);
 
 	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 	return 0;
@@ -496,6 +496,14 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
 			return -ENODEV;
 	}
 
+	if (of_property_read_bool(node, "little-endian")) {
+		ptp_qoriq->read = qoriq_read_le;
+		ptp_qoriq->write = qoriq_write_le;
+	} else {
+		ptp_qoriq->read = qoriq_read_be;
+		ptp_qoriq->write = qoriq_write_be;
+	}
+
 	if (of_device_is_compatible(node, "fsl,fman-ptp-timer")) {
 		ptp_qoriq->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
 		ptp_qoriq->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
@@ -519,13 +527,14 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
 	spin_lock_irqsave(&ptp_qoriq->lock, flags);
 
 	regs = &ptp_qoriq->regs;
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   tmr_ctrl);
-	qoriq_write(&regs->ctrl_regs->tmr_add,    ptp_qoriq->tmr_add);
-	qoriq_write(&regs->ctrl_regs->tmr_prsc,   ptp_qoriq->tmr_prsc);
-	qoriq_write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
-	qoriq_write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, tmr_ctrl);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_add, ptp_qoriq->tmr_add);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_prsc, ptp_qoriq->tmr_prsc);
+	ptp_qoriq->write(&regs->fiper_regs->tmr_fiper1, ptp_qoriq->tmr_fiper1);
+	ptp_qoriq->write(&regs->fiper_regs->tmr_fiper2, ptp_qoriq->tmr_fiper2);
 	set_alarm(ptp_qoriq);
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   tmr_ctrl|FIPERST|RTPE|TE|FRD);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl,
+			 tmr_ctrl|FIPERST|RTPE|TE|FRD);
 
 	spin_unlock_irqrestore(&ptp_qoriq->lock, flags);
 
@@ -543,8 +552,8 @@ void ptp_qoriq_free(struct ptp_qoriq *ptp_qoriq)
 {
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 
-	qoriq_write(&regs->ctrl_regs->tmr_temask, 0);
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl,   0);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_temask, 0);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl,   0);
 
 	ptp_qoriq_remove_debugfs(ptp_qoriq);
 	ptp_clock_unregister(ptp_qoriq->clock);
diff --git a/drivers/ptp/ptp_qoriq_debugfs.c b/drivers/ptp/ptp_qoriq_debugfs.c
index 3a70daf..e8dddce 100644
--- a/drivers/ptp/ptp_qoriq_debugfs.c
+++ b/drivers/ptp/ptp_qoriq_debugfs.c
@@ -11,7 +11,7 @@ static int ptp_qoriq_fiper1_lpbk_get(void *data, u64 *val)
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
-	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
+	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
 	*val = ctrl & PP1L ? 1 : 0;
 
 	return 0;
@@ -23,13 +23,13 @@ static int ptp_qoriq_fiper1_lpbk_set(void *data, u64 val)
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
-	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
+	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
 	if (val == 0)
 		ctrl &= ~PP1L;
 	else
 		ctrl |= PP1L;
 
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl, ctrl);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
 	return 0;
 }
 
@@ -42,7 +42,7 @@ static int ptp_qoriq_fiper2_lpbk_get(void *data, u64 *val)
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
-	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
+	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
 	*val = ctrl & PP2L ? 1 : 0;
 
 	return 0;
@@ -54,13 +54,13 @@ static int ptp_qoriq_fiper2_lpbk_set(void *data, u64 val)
 	struct ptp_qoriq_registers *regs = &ptp_qoriq->regs;
 	u32 ctrl;
 
-	ctrl = qoriq_read(&regs->ctrl_regs->tmr_ctrl);
+	ctrl = ptp_qoriq->read(&regs->ctrl_regs->tmr_ctrl);
 	if (val == 0)
 		ctrl &= ~PP2L;
 	else
 		ctrl |= PP2L;
 
-	qoriq_write(&regs->ctrl_regs->tmr_ctrl, ctrl);
+	ptp_qoriq->write(&regs->ctrl_regs->tmr_ctrl, ctrl);
 	return 0;
 }
 
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 757aec3..1f8bb6a 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -157,21 +157,30 @@ struct ptp_qoriq {
 	u32 cksel;
 	u32 tmr_fiper1;
 	u32 tmr_fiper2;
+	u32 (*read)(unsigned __iomem *addr);
+	void (*write)(unsigned __iomem *addr, u32 val);
 };
 
-static inline u32 qoriq_read(unsigned __iomem *addr)
+static inline u32 qoriq_read_be(unsigned __iomem *addr)
 {
-	u32 val;
-
-	val = ioread32be(addr);
-	return val;
+	return ioread32be(addr);
 }
 
-static inline void qoriq_write(unsigned __iomem *addr, u32 val)
+static inline void qoriq_write_be(unsigned __iomem *addr, u32 val)
 {
 	iowrite32be(val, addr);
 }
 
+static inline u32 qoriq_read_le(unsigned __iomem *addr)
+{
+	return ioread32(addr);
+}
+
+static inline void qoriq_write_le(unsigned __iomem *addr, u32 val)
+{
+	iowrite32(val, addr);
+}
+
 irqreturn_t ptp_qoriq_isr(int irq, void *priv);
 int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
 		   const struct ptp_clock_info caps);
-- 
1.7.1

[v3, 5/9] dt-binding: ptp_qoriq: add little-endian support

[Yangbo Lu]

Specify "little-endian" property if the 1588 timer IP block
is little-endian mode. The default endian mode is big-endian.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- None.
---
 .../devicetree/bindings/ptp/ptp-qoriq.txt          |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt b/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
index 8e7f855..454c937 100644
--- a/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
+++ b/Documentation/devicetree/bindings/ptp/ptp-qoriq.txt
@@ -19,6 +19,9 @@ Clock Properties:
   - fsl,max-adj      Maximum frequency adjustment in parts per billion.
   - fsl,extts-fifo   The presence of this property indicates hardware
 		     support for the external trigger stamp FIFO.
+  - little-endian    The presence of this property indicates the 1588 timer
+		     IP block is little-endian mode. The default endian mode
+		     is big-endian.
 
   These properties set the operational parameters for the PTP
   clock. You must choose these carefully for the clock to work right.
-- 
1.7.1

[v3, 6/9] ptp_qoriq: fix register memory map

[Yangbo Lu]

The 1588 timer on eTSEC Ethernet controller uses different
register memory map with DPAA Ethernet controller.
Now the new ENETC Ethernet controller uses same reigster
memory map with DPAA. To support ENETC, let's use register
memory map of DPAA/ENETC in default.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- None.
---
 drivers/ptp/ptp_qoriq.c       |   11 ++++++-----
 include/linux/fsl/ptp_qoriq.h |   16 ++++++++--------
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c
index ed4dc39..42d3654 100644
--- a/drivers/ptp/ptp_qoriq.c
+++ b/drivers/ptp/ptp_qoriq.c
@@ -504,11 +504,12 @@ int ptp_qoriq_init(struct ptp_qoriq *ptp_qoriq, void __iomem *base,
 		ptp_qoriq->write = qoriq_write_be;
 	}
 
-	if (of_device_is_compatible(node, "fsl,fman-ptp-timer")) {
-		ptp_qoriq->regs.ctrl_regs = base + FMAN_CTRL_REGS_OFFSET;
-		ptp_qoriq->regs.alarm_regs = base + FMAN_ALARM_REGS_OFFSET;
-		ptp_qoriq->regs.fiper_regs = base + FMAN_FIPER_REGS_OFFSET;
-		ptp_qoriq->regs.etts_regs = base + FMAN_ETTS_REGS_OFFSET;
+	/* The eTSEC uses differnt memory map with DPAA/ENETC */
+	if (of_device_is_compatible(node, "fsl,etsec-ptp")) {
+		ptp_qoriq->regs.ctrl_regs = base + ETSEC_CTRL_REGS_OFFSET;
+		ptp_qoriq->regs.alarm_regs = base + ETSEC_ALARM_REGS_OFFSET;
+		ptp_qoriq->regs.fiper_regs = base + ETSEC_FIPER_REGS_OFFSET;
+		ptp_qoriq->regs.etts_regs = base + ETSEC_ETTS_REGS_OFFSET;
 	} else {
 		ptp_qoriq->regs.ctrl_regs = base + CTRL_REGS_OFFSET;
 		ptp_qoriq->regs.alarm_regs = base + ALARM_REGS_OFFSET;
diff --git a/include/linux/fsl/ptp_qoriq.h b/include/linux/fsl/ptp_qoriq.h
index 1f8bb6a..f127adb 100644
--- a/include/linux/fsl/ptp_qoriq.h
+++ b/include/linux/fsl/ptp_qoriq.h
@@ -58,15 +58,15 @@ struct ptp_qoriq_registers {
 };
 
 /* Offset definitions for the four register groups */
-#define CTRL_REGS_OFFSET	0x0
-#define ALARM_REGS_OFFSET	0x40
-#define FIPER_REGS_OFFSET	0x80
-#define ETTS_REGS_OFFSET	0xa0
-
-#define FMAN_CTRL_REGS_OFFSET	0x80
-#define FMAN_ALARM_REGS_OFFSET	0xb8
-#define FMAN_FIPER_REGS_OFFSET	0xd0
-#define FMAN_ETTS_REGS_OFFSET	0xe0
+#define ETSEC_CTRL_REGS_OFFSET	0x0
+#define ETSEC_ALARM_REGS_OFFSET	0x40
+#define ETSEC_FIPER_REGS_OFFSET	0x80
+#define ETSEC_ETTS_REGS_OFFSET	0xa0
+
+#define CTRL_REGS_OFFSET	0x80
+#define ALARM_REGS_OFFSET	0xb8
+#define FIPER_REGS_OFFSET	0xd0
+#define ETTS_REGS_OFFSET	0xe0
 
 
 /* Bit definitions for the TMR_CTRL register */
-- 
1.7.1

[v3, 7/9] ptp: add QorIQ PTP support for ENETC

[Yangbo Lu]

This patch is to add QorIQ PTP support for ENETC.
ENETC PTP driver which is a PCI driver for same
1588 timer IP block will reuse QorIQ PTP driver.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Chanbges for v2:
	- None.
Chanbges for v3:
	- None.
---
 drivers/ptp/Kconfig |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index aeb4a8b..7fe1863 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -43,7 +43,7 @@ config PTP_1588_CLOCK_DTE
 
 config PTP_1588_CLOCK_QORIQ
 	tristate "Freescale QorIQ 1588 timer as PTP clock"
-	depends on GIANFAR || FSL_DPAA_ETH
+	depends on GIANFAR || FSL_DPAA_ETH || FSL_ENETC || FSL_ENETC_VF
 	depends on PTP_1588_CLOCK
 	default y
 	help
-- 
1.7.1

[v3, 8/9] enetc: add PTP clock driver

[Yangbo Lu]

This patch is to add PTP clock driver for ENETC.
The driver reused QorIQ PTP clock driver.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- Converted to use ptp_qoriq_free().
---
 drivers/net/ethernet/freescale/enetc/Kconfig     |   12 ++
 drivers/net/ethernet/freescale/enetc/Makefile    |    3 +
 drivers/net/ethernet/freescale/enetc/enetc_hw.h  |    5 +-
 drivers/net/ethernet/freescale/enetc/enetc_ptp.c |  144 ++++++++++++++++++++++
 4 files changed, 162 insertions(+), 2 deletions(-)
 create mode 100644 drivers/net/ethernet/freescale/enetc/enetc_ptp.c

diff --git a/drivers/net/ethernet/freescale/enetc/Kconfig b/drivers/net/ethernet/freescale/enetc/Kconfig
index f9dd26f..8429f5c 100644
--- a/drivers/net/ethernet/freescale/enetc/Kconfig
+++ b/drivers/net/ethernet/freescale/enetc/Kconfig
@@ -17,3 +17,15 @@ config FSL_ENETC_VF
 	  virtual function (VF) devices enabled by the ENETC PF driver.
 
 	  If compiled as module (M), the module name is fsl-enetc-vf.
+
+config FSL_ENETC_PTP_CLOCK
+	tristate "ENETC PTP clock driver"
+	depends on PTP_1588_CLOCK_QORIQ && (FSL_ENETC || FSL_ENETC_VF)
+	default y
+	help
+	  This driver adds support for using the ENETC 1588 timer
+	  as a PTP clock. This clock is only useful if your PTP
+	  programs are getting hardware time stamps on the PTP Ethernet
+	  packets using the SO_TIMESTAMPING API.
+
+	  If compiled as module (M), the module name is fsl-enetc-ptp.
diff --git a/drivers/net/ethernet/freescale/enetc/Makefile b/drivers/net/ethernet/freescale/enetc/Makefile
index 9529b01..6976602 100644
--- a/drivers/net/ethernet/freescale/enetc/Makefile
+++ b/drivers/net/ethernet/freescale/enetc/Makefile
@@ -13,3 +13,6 @@ fsl-enetc-vf-$(CONFIG_FSL_ENETC_VF) += enetc.o enetc_cbdr.o \
 				       enetc_ethtool.o
 fsl-enetc-vf-objs := enetc_vf.o $(fsl-enetc-vf-y)
 endif
+
+obj-$(CONFIG_FSL_ENETC_PTP_CLOCK) += fsl-enetc-ptp.o
+fsl-enetc-ptp-$(CONFIG_FSL_ENETC_PTP_CLOCK) += enetc_ptp.o
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_hw.h b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
index efa0b1a..df8eb88 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_hw.h
+++ b/drivers/net/ethernet/freescale/enetc/enetc_hw.h
@@ -4,8 +4,9 @@
 #include <linux/bitops.h>
 
 /* ENETC device IDs */
-#define ENETC_DEV_ID_PF	0xe100
-#define ENETC_DEV_ID_VF	0xef00
+#define ENETC_DEV_ID_PF		0xe100
+#define ENETC_DEV_ID_VF		0xef00
+#define ENETC_DEV_ID_PTP	0xee02
 
 /* ENETC register block BAR */
 #define ENETC_BAR_REGS	0
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_ptp.c b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c
new file mode 100644
index 0000000..dc2f58a
--- /dev/null
+++ b/drivers/net/ethernet/freescale/enetc/enetc_ptp.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/* Copyright 2019 NXP */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/fsl/ptp_qoriq.h>
+
+#include "enetc.h"
+
+static struct ptp_clock_info enetc_ptp_caps = {
+	.owner		= THIS_MODULE,
+	.name		= "ENETC PTP clock",
+	.max_adj	= 512000,
+	.n_alarm	= 0,
+	.n_ext_ts	= 2,
+	.n_per_out	= 0,
+	.n_pins		= 0,
+	.pps		= 1,
+	.adjfine	= ptp_qoriq_adjfine,
+	.adjtime	= ptp_qoriq_adjtime,
+	.gettime64	= ptp_qoriq_gettime,
+	.settime64	= ptp_qoriq_settime,
+	.enable		= ptp_qoriq_enable,
+};
+
+static int enetc_ptp_probe(struct pci_dev *pdev,
+			   const struct pci_device_id *ent)
+{
+	struct ptp_qoriq *ptp_qoriq;
+	void __iomem *base;
+	int err, len, n;
+
+	if (pdev->dev.of_node && !of_device_is_available(pdev->dev.of_node)) {
+		dev_info(&pdev->dev, "device is disabled, skipping\n");
+		return -ENODEV;
+	}
+
+	err = pci_enable_device_mem(pdev);
+	if (err) {
+		dev_err(&pdev->dev, "device enable failed\n");
+		return err;
+	}
+
+	/* set up for high or low dma */
+	err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (err) {
+		err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+		if (err) {
+			dev_err(&pdev->dev,
+				"DMA configuration failed: 0x%x\n", err);
+			goto err_dma;
+		}
+	}
+
+	err = pci_request_mem_regions(pdev, KBUILD_MODNAME);
+	if (err) {
+		dev_err(&pdev->dev, "pci_request_regions failed err=%d\n", err);
+		goto err_pci_mem_reg;
+	}
+
+	pci_set_master(pdev);
+
+	ptp_qoriq = kzalloc(sizeof(*ptp_qoriq), GFP_KERNEL);
+	if (!ptp_qoriq) {
+		err = -ENOMEM;
+		goto err_alloc_ptp;
+	}
+
+	len = pci_resource_len(pdev, ENETC_BAR_REGS);
+
+	base = ioremap(pci_resource_start(pdev, ENETC_BAR_REGS), len);
+	if (!base) {
+		err = -ENXIO;
+		dev_err(&pdev->dev, "ioremap() failed\n");
+		goto err_ioremap;
+	}
+
+	/* Allocate 1 interrupt */
+	n = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
+	if (n != 1) {
+		err = -EPERM;
+		goto err_irq;
+	}
+
+	ptp_qoriq->irq = pci_irq_vector(pdev, 0);
+
+	err = request_irq(ptp_qoriq->irq, ptp_qoriq_isr, 0, DRIVER, ptp_qoriq);
+	if (err) {
+		dev_err(&pdev->dev, "request_irq() failed!\n");
+		goto err_irq;
+	}
+
+	ptp_qoriq->dev = &pdev->dev;
+
+	err = ptp_qoriq_init(ptp_qoriq, base, enetc_ptp_caps);
+	if (err)
+		goto err_no_clock;
+
+	pci_set_drvdata(pdev, ptp_qoriq);
+
+	return 0;
+
+err_no_clock:
+	free_irq(ptp_qoriq->irq, ptp_qoriq);
+err_irq:
+	iounmap(base);
+err_ioremap:
+	kfree(ptp_qoriq);
+err_alloc_ptp:
+	pci_release_mem_regions(pdev);
+err_pci_mem_reg:
+err_dma:
+	pci_disable_device(pdev);
+
+	return err;
+}
+
+static void enetc_ptp_remove(struct pci_dev *pdev)
+{
+	struct ptp_qoriq *ptp_qoriq = pci_get_drvdata(pdev);
+
+	ptp_qoriq_free(ptp_qoriq);
+	kfree(ptp_qoriq);
+
+	pci_release_mem_regions(pdev);
+	pci_disable_device(pdev);
+}
+
+static const struct pci_device_id enetc_ptp_id_table[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, ENETC_DEV_ID_PTP) },
+	{ 0, } /* End of table. */
+};
+MODULE_DEVICE_TABLE(pci, enetc_ptp_id_table);
+
+static struct pci_driver enetc_ptp_driver = {
+	.name = KBUILD_MODNAME,
+	.id_table = enetc_ptp_id_table,
+	.probe = enetc_ptp_probe,
+	.remove = enetc_ptp_remove,
+};
+module_pci_driver(enetc_ptp_driver);
+
+MODULE_DESCRIPTION("ENETC PTP clock driver");
+MODULE_LICENSE("Dual BSD/GPL");
-- 
1.7.1

[v3, 9/9] MAINTAINERS: add enetc_ptp driver into QorIQ PTP list

[Yangbo Lu]

This patch to add enetc_ptp driver into QorIQ PTP list
for maintaining.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
---
Changes for v2:
	- None.
Changes for v3:
	- None.
---
 MAINTAINERS |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 604bca2..d6a8475 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6104,6 +6104,7 @@ FREESCALE QORIQ PTP CLOCK DRIVER
 M:	Yangbo Lu <yangbo.lu@nxp.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
+F:	drivers/net/ethernet/freescale/enetc/enetc_ptp.c
 F:	drivers/ptp/ptp_qoriq.c
 F:	drivers/ptp/ptp_qoriq_debugfs.c
 F:	include/linux/fsl/ptp_qoriq.h
-- 
1.7.1

Re: [v3, 0/9] Add ENETC PTP clock driver

[David Miller]

From: Yangbo Lu <yangbo.lu@nxp.com>
Date: Tue, 12 Feb 2019 12:23:55 +0800

> There is same QorIQ 1588 timer IP block on the new ENETC Ethernet
> controller with eTSEC/DPAA Ethernet controllers. However it's
> different endianness (little-endian) and using PCI driver.
> 
> To support ENETC PTP driver, ptp_qoriq driver needed to be
> reworked to make functions global for reusing, to add little-
> endian support, to add ENETC memory map support, and to add
> ENETC dependency for ptp_qoriq driver.
> 
> In addition, although ENETC PTP driver is a PCI driver, the dts
> node still could be used. Currently the ls1028a dtsi which is
> the only platform by now using ENETC is not complete, so there
> is still dependency for ENETC PTP node upstreaming. This will
> be done in the near future. The hardware timestamping support
> for ENETC is done but needs to be reworked with new method in
> internal git tree, and will be sent out soon.

Series applied.

I'll push this out after my build tests pass.