From: Jonathan Lemon <jonathan.lemon@gmail.com>
To: davem@davemloft.net, kuba@kernel.org, richardcochran@gmail.com
Cc: netdev@vger.kernel.org, kernel-team@fb.com, abyagowi@fb.com
Subject: [PATCH net-next 08/11] ptp: ocp: Add sysfs attribute utc_tai_offset
Date: Mon, 30 Aug 2021 16:52:33 -0700 [thread overview]
Message-ID: <20210830235236.309993-9-jonathan.lemon@gmail.com> (raw)
In-Reply-To: <20210830235236.309993-1-jonathan.lemon@gmail.com>
IRIG and DCF output time in UTC, but the timecard operates
on TAI internally. Add an attribute node which allows adding
an offset to these modes before output.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
---
drivers/ptp/ptp_ocp.c | 38 +++++++++++++++++++++++++++++++++++++-
1 file changed, 37 insertions(+), 1 deletion(-)
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index fceeee380d9f..093385c6fed0 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -230,8 +230,9 @@ struct ptp_ocp {
int gnss_port;
int mac_port; /* miniature atomic clock */
u8 serial[6];
- int flash_start;
bool has_serial;
+ int flash_start;
+ s32 utc_tai_offset;
};
struct ocp_resource {
@@ -1592,6 +1593,40 @@ available_sma_outputs_show(struct device *dev,
}
static DEVICE_ATTR_RO(available_sma_outputs);
+static ssize_t
+utc_tai_offset_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+
+ return sysfs_emit(buf, "%d\n", bp->utc_tai_offset);
+}
+
+static ssize_t
+utc_tai_offset_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ptp_ocp *bp = dev_get_drvdata(dev);
+ unsigned long flags;
+ int err;
+ s32 val;
+
+ err = kstrtos32(buf, 0, &val);
+ if (err)
+ return err;
+
+ bp->utc_tai_offset = val;
+
+ spin_lock_irqsave(&bp->lock, flags);
+ iowrite32(val, &bp->irig_out->adj_sec);
+ iowrite32(val, &bp->dcf_out->adj_sec);
+ spin_unlock_irqrestore(&bp->lock, flags);
+
+ return count;
+}
+static DEVICE_ATTR_RW(utc_tai_offset);
+
static ssize_t
clock_source_show(struct device *dev, struct device_attribute *attr, char *buf)
{
@@ -1644,6 +1679,7 @@ static struct attribute *timecard_attrs[] = {
&dev_attr_sma4_in.attr,
&dev_attr_available_sma_inputs.attr,
&dev_attr_available_sma_outputs.attr,
+ &dev_attr_utc_tai_offset.attr,
NULL,
};
ATTRIBUTE_GROUPS(timecard);
--
2.31.1
next prev parent reply other threads:[~2021-08-30 23:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-30 23:52 [PATCH net-next 00/11] ocp timecard updates Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 01/11] ptp: ocp: parameterize the i2c driver used Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 02/11] ptp: ocp: Parameterize the TOD information display Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 03/11] ptp: ocp: Skip I2C flash read when there is no controller Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 04/11] ptp: ocp: Skip resources with out of range irqs Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 05/11] ptp: ocp: Add third timestamper Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 06/11] ptp: ocp: Add SMA selector and controls Jonathan Lemon
2021-09-01 23:56 ` Jakub Kicinski
2021-09-02 16:55 ` Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 07/11] ptp: ocp: Add IRIG-B and DCF blocks Jonathan Lemon
2021-08-30 23:52 ` Jonathan Lemon [this message]
2021-09-01 23:56 ` [PATCH net-next 08/11] ptp: ocp: Add sysfs attribute utc_tai_offset Jakub Kicinski
2021-09-02 16:57 ` Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 09/11] ptp: ocp: Add debugfs entry for timecard Jonathan Lemon
2021-09-02 0:06 ` Jakub Kicinski
2021-09-02 17:00 ` Jonathan Lemon
2021-08-30 23:52 ` [PATCH net-next 10/11] ptp: ocp: Add IRIG-B output mode control Jonathan Lemon
2021-09-02 0:07 ` Jakub Kicinski
2021-09-02 17:02 ` Jonathan Lemon
2021-09-02 22:41 ` Jakub Kicinski
2021-08-30 23:52 ` [PATCH net-next 11/11] docs: ABI: Add sysfs documentation for timecard Jonathan Lemon
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