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authorJonathan Lemon <jonathan.lemon@gmail.com>2022-05-20 00:21:52 +0300
committerJakub Kicinski <kuba@kernel.org>2022-05-24 21:39:54 +0300
commitb88fdbba931e9c79772120cb60a6ea8adaf0b451 (patch)
tree8028a08231d43988d21fe7872b2a6b21dcabf1fb /drivers/ptp
parentee4cd7250c8f5fd47b77b2235057f4b52c1576a6 (diff)
downloadlinux-b88fdbba931e9c79772120cb60a6ea8adaf0b451.tar.xz
ptp: ocp: fix PPS source selector debugfs reporting
The NTL timecard design has a PPS1 selector which selects the the PPS source automatically, according to Section 1.9 of the documentation. If there is a SMA PPS input detected: - send signal to MAC and PPS slave selector. If there is a MAC PPS input detected: - send GNSS1 to the MAC - send MAC to the PPS slave If there is a GNSS1 input detected: - send GNSS1 to the MAC - send GNSS1 to the PPS slave.MAC Change the debugfs summary so it reflects the correct mapping, for assistance in debugging. No functional change. Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/ptp')
-rw-r--r--drivers/ptp/ptp_ocp.c25
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/ptp/ptp_ocp.c b/drivers/ptp/ptp_ocp.c
index 3856e9c24333..9fac96fd0fd4 100644
--- a/drivers/ptp/ptp_ocp.c
+++ b/drivers/ptp/ptp_ocp.c
@@ -3099,10 +3099,10 @@ ptp_ocp_summary_show(struct seq_file *s, void *data)
struct device *dev = s->private;
struct ptp_system_timestamp sts;
struct ts_reg __iomem *ts_reg;
+ char *buf, *src, *mac_src;
struct timespec64 ts;
struct ptp_ocp *bp;
u16 sma_val[4][2];
- char *src, *buf;
u32 ctrl, val;
bool on, map;
int i;
@@ -3265,17 +3265,26 @@ ptp_ocp_summary_show(struct seq_file *s, void *data)
if (bp->pps_select) {
val = ioread32(&bp->pps_select->gpio1);
src = &buf[80];
- if (val & 0x01)
+ mac_src = "GNSS1";
+ if (val & 0x01) {
gpio_input_map(src, bp, sma_val, 0, NULL);
- else if (val & 0x02)
+ mac_src = src;
+ } else if (val & 0x02) {
src = "MAC";
- else if (val & 0x04)
+ } else if (val & 0x04) {
src = "GNSS1";
- else
+ } else {
src = "----";
+ mac_src = src;
+ }
} else {
src = "?";
+ mac_src = src;
}
+ seq_printf(s, "MAC PPS1 src: %s\n", mac_src);
+
+ gpio_input_map(buf, bp, sma_val, 1, "GNSS2");
+ seq_printf(s, "MAC PPS2 src: %s\n", buf);
/* assumes automatic switchover/selection */
val = ioread32(&bp->reg->select);
@@ -3300,12 +3309,6 @@ ptp_ocp_summary_show(struct seq_file *s, void *data)
seq_printf(s, "%7s: %s, state: %s\n", "PHC src", buf,
val & OCP_STATUS_IN_SYNC ? "sync" : "unsynced");
- /* reuses PPS1 src from earlier */
- seq_printf(s, "MAC PPS1 src: %s\n", src);
-
- gpio_input_map(buf, bp, sma_val, 1, "GNSS2");
- seq_printf(s, "MAC PPS2 src: %s\n", buf);
-
if (!ptp_ocp_gettimex(&bp->ptp_info, &ts, &sts)) {
struct timespec64 sys_ts;
s64 pre_ns, post_ns, ns;