Merge branch 'net-dsa-mv88e6xxx-remove-redundant-ptp-timestamping-code'

Russell King says:

====================
net: dsa: mv88e6xxx: remove redundant ptp/timestamping code

mv88e6xxx as accumulated some unused data structures and code over the
years. This series removes it and simplifies the code. See the patches
for each change.
====================

Link: https://patch.msgid.link/aMKoYyN18FHFCa1q@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

4 files changed, 9 insertions, 53 deletions

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 2281d6ab8c9a..25d4c89d36b8 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -5088,7 +5088,7 @@ static const struct mv88e6xxx_ops mv88e6250_ops = {
 	.vtu_getnext = mv88e6185_g1_vtu_getnext,
 	.vtu_loadpurge = mv88e6185_g1_vtu_loadpurge,
 	.avb_ops = &mv88e6352_avb_ops,
-	.ptp_ops = &mv88e6250_ptp_ops,
+	.ptp_ops = &mv88e6352_ptp_ops,
 	.phylink_get_caps = mv88e6250_phylink_get_caps,
 	.set_max_frame_size = mv88e6185_g1_set_max_frame_size,
 };
diff --git a/drivers/net/dsa/mv88e6xxx/chip.h b/drivers/net/dsa/mv88e6xxx/chip.h
index feddf505c918..2f211e55cb47 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.h
+++ b/drivers/net/dsa/mv88e6xxx/chip.h
@@ -424,8 +424,6 @@ struct mv88e6xxx_chip {
 	struct ptp_clock_info	ptp_clock_info;
 	struct delayed_work	tai_event_work;
 	struct ptp_pin_desc	pin_config[MV88E6XXX_MAX_GPIO];
-	u16 trig_config;
-	u16 evcap_config;
 	u16 enable_count;
 
 	/* Current ingress and egress monitor ports */
diff --git a/drivers/net/dsa/mv88e6xxx/ptp.c b/drivers/net/dsa/mv88e6xxx/ptp.c
index e8c9207e932e..89fb61ea891d 100644
--- a/drivers/net/dsa/mv88e6xxx/ptp.c
+++ b/drivers/net/dsa/mv88e6xxx/ptp.c
@@ -167,42 +167,26 @@ static u64 mv88e6165_ptp_clock_read(struct cyclecounter *cc)
 }
 
 /* mv88e6352_config_eventcap - configure TAI event capture
- * @event: PTP_CLOCK_PPS (internal) or PTP_CLOCK_EXTTS (external)
  * @rising: zero for falling-edge trigger, else rising-edge trigger
  *
  * This will also reset the capture sequence counter.
  */
-static int mv88e6352_config_eventcap(struct mv88e6xxx_chip *chip, int event,
-				     int rising)
+static int mv88e6352_config_eventcap(struct mv88e6xxx_chip *chip, int rising)
 {
-	u16 global_config;
-	u16 cap_config;
+	u16 evcap_config;
 	int err;
 
-	chip->evcap_config = MV88E6XXX_TAI_CFG_CAP_OVERWRITE |
-			     MV88E6XXX_TAI_CFG_CAP_CTR_START;
+	evcap_config = MV88E6XXX_TAI_CFG_CAP_OVERWRITE |
+		       MV88E6XXX_TAI_CFG_CAP_CTR_START;
 	if (!rising)
-		chip->evcap_config |= MV88E6XXX_TAI_CFG_EVREQ_FALLING;
+		evcap_config |= MV88E6XXX_TAI_CFG_EVREQ_FALLING;
 
-	global_config = (chip->evcap_config | chip->trig_config);
-	err = mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_CFG, global_config);
+	err = mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_CFG, evcap_config);
 	if (err)
 		return err;
 
-	if (event == PTP_CLOCK_PPS) {
-		cap_config = MV88E6XXX_TAI_EVENT_STATUS_CAP_TRIG;
-	} else if (event == PTP_CLOCK_EXTTS) {
-		/* if STATUS_CAP_TRIG is unset we capture PTP_EVREQ events */
-		cap_config = 0;
-	} else {
-		return -EINVAL;
-	}
-
 	/* Write the capture config; this also clears the capture counter */
-	err = mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_EVENT_STATUS,
-				  cap_config);
-
-	return err;
+	return mv88e6xxx_tai_write(chip, MV88E6XXX_TAI_EVENT_STATUS, 0);
 }
 
 static void mv88e6352_tai_event_work(struct work_struct *ugly)
@@ -355,7 +339,7 @@ static int mv88e6352_ptp_enable_extts(struct mv88e6xxx_chip *chip,
 		schedule_delayed_work(&chip->tai_event_work,
 				      TAI_EVENT_WORK_INTERVAL);
 
-		err = mv88e6352_config_eventcap(chip, PTP_CLOCK_EXTTS, rising);
+		err = mv88e6352_config_eventcap(chip, rising);
 	} else {
 		func = MV88E6352_G2_SCRATCH_GPIO_PCTL_GPIO;
 
@@ -413,29 +397,6 @@ const struct mv88e6xxx_ptp_ops mv88e6165_ptp_ops = {
 		(1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ),
 };
 
-const struct mv88e6xxx_ptp_ops mv88e6250_ptp_ops = {
-	.clock_read = mv88e6352_ptp_clock_read,
-	.ptp_enable = mv88e6352_ptp_enable,
-	.ptp_verify = mv88e6352_ptp_verify,
-	.event_work = mv88e6352_tai_event_work,
-	.port_enable = mv88e6352_hwtstamp_port_enable,
-	.port_disable = mv88e6352_hwtstamp_port_disable,
-	.n_ext_ts = 1,
-	.arr0_sts_reg = MV88E6XXX_PORT_PTP_ARR0_STS,
-	.arr1_sts_reg = MV88E6XXX_PORT_PTP_ARR1_STS,
-	.dep_sts_reg = MV88E6XXX_PORT_PTP_DEP_STS,
-	.rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L4_SYNC) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L2_EVENT) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L2_SYNC) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_EVENT) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_SYNC) |
-		(1 << HWTSTAMP_FILTER_PTP_V2_DELAY_REQ),
-};
-
 const struct mv88e6xxx_ptp_ops mv88e6352_ptp_ops = {
 	.clock_read = mv88e6352_ptp_clock_read,
 	.ptp_enable = mv88e6352_ptp_enable,
diff --git a/drivers/net/dsa/mv88e6xxx/ptp.h b/drivers/net/dsa/mv88e6xxx/ptp.h
index 6c4d09adc93c..b3fd177d67e3 100644
--- a/drivers/net/dsa/mv88e6xxx/ptp.h
+++ b/drivers/net/dsa/mv88e6xxx/ptp.h
@@ -54,7 +54,6 @@
 
 /* Offset 0x09: Event Status */
 #define MV88E6XXX_TAI_EVENT_STATUS		0x09
-#define MV88E6XXX_TAI_EVENT_STATUS_CAP_TRIG	0x4000
 #define MV88E6XXX_TAI_EVENT_STATUS_ERROR	0x0200
 #define MV88E6XXX_TAI_EVENT_STATUS_VALID	0x0100
 #define MV88E6XXX_TAI_EVENT_STATUS_CTR_MASK	0x00ff
@@ -149,7 +148,6 @@ void mv88e6xxx_ptp_free(struct mv88e6xxx_chip *chip);
 				      ptp_clock_info)
 
 extern const struct mv88e6xxx_ptp_ops mv88e6165_ptp_ops;
-extern const struct mv88e6xxx_ptp_ops mv88e6250_ptp_ops;
 extern const struct mv88e6xxx_ptp_ops mv88e6352_ptp_ops;
 extern const struct mv88e6xxx_ptp_ops mv88e6390_ptp_ops;
 
@@ -170,7 +168,6 @@ static inline void mv88e6xxx_ptp_free(struct mv88e6xxx_chip *chip)
 }
 
 static const struct mv88e6xxx_ptp_ops mv88e6165_ptp_ops = {};
-static const struct mv88e6xxx_ptp_ops mv88e6250_ptp_ops = {};
 static const struct mv88e6xxx_ptp_ops mv88e6352_ptp_ops = {};
 static const struct mv88e6xxx_ptp_ops mv88e6390_ptp_ops = {};