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icE1usb: Show accumulated error count from GPSDO state in sysfs

Change-Id: Idc4ff2a3a7411df758a432fc4c6fe5a88963b626
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
---
M drivers/dahdi/icE1usb/icE1usb.c
1 file changed, 24 insertions(+), 0 deletions(-)

git pull ssh://gerrit.osmocom.org:29418/dahdi-linux refs/changes/95/36695/1

diff --git a/drivers/dahdi/icE1usb/icE1usb.c b/drivers/dahdi/icE1usb/icE1usb.c
index 867b4f2..a861515 100644
--- a/drivers/dahdi/icE1usb/icE1usb.c
+++ b/drivers/dahdi/icE1usb/icE1usb.c
@@ -1119,6 +1119,18 @@
 
 static DEVICE_ATTR(gpsdo_freq_est, 0444, e1u_gpsdo_freq_est_show, NULL);
 
+static ssize_t e1u_gpsdo_err_acc_show(struct device *dev,
+					struct device_attribute *attr, char *buf)
+{
+	struct ice1usb_gpsdo *e1d = dev_get_drvdata(dev);
+	int rc = e1u_update_gpsdo(e1d);
+	if (rc < 0)
+		return rc;
+	return sprintf(buf, "%d\n", (int)e1d->gpsdo_status.err_acc);
+}
+
+static DEVICE_ATTR(gpsdo_err_acc, 0444, e1u_gpsdo_err_acc_show, NULL);
+
 static ssize_t e1u_fw_build_show(struct device *dev,
 				 struct device_attribute *attr, char *buf)
 {
@@ -1138,6 +1150,7 @@
 	device_create_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_tune_coarse);
 	device_create_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_tune_fine);
 	device_create_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_freq_est);
+	device_create_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_err_acc);
 	device_create_file(&e1d->usb_intf->dev, &dev_attr_fw_build);
 }
 
@@ -1150,6 +1163,7 @@
 	device_remove_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_tune_coarse);
 	device_remove_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_tune_fine);
 	device_remove_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_freq_est);
+	device_remove_file(&e1d->usb_intf->dev, &dev_attr_gpsdo_err_acc);
 	device_remove_file(&e1d->usb_intf->dev, &dev_attr_fw_build);
 }
 

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