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net: dsa: mv88e6xxx: remove unused support for PPS event capture

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mv88e6352_config_eventcap() is documented as handling both EXTTS and
PPS capture modes, but nothing ever calls it for PPS capture. Remove
the unused PPS capture mode support, and the now unused
MV88E6XXX_TAI_EVENT_STATUS_CAP_TRIG definition.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/E1uwep9-00000004ikJ-2FeF@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2025-09-11 11:46:43 +01:00 committed by Jakub Kicinski
parent ae4c949816
commit fbd12de4c5
2 changed files with 3 additions and 19 deletions
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21
drivers/net/dsa/mv88e6xxx/ptp.c
View File

@ -167,16 +167,13 @@ 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 evcap_config;
u16 cap_config;
int err;
evcap_config = MV88E6XXX_TAI_CFG_CAP_OVERWRITE |
@ -188,20 +185,8 @@ static int mv88e6352_config_eventcap(struct mv88e6xxx_chip *chip, int event,
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)
@ -354,7 +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;

1
drivers/net/dsa/mv88e6xxx/ptp.h
View File

@ -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