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ptp: ocp: Add second GNSS device

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Upcoming boards may have a second GNSS receiver, getting information
from a different constellation than the first receiver, which provides
some measure of anti-spoofing.

Expose the sysfs attribute for this device, if detected.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jonathan Lemon 2021-09-14 19:16:32 -07:00 committed by David S. Miller
parent e3516bb450
commit 71d7e08504
1 changed files with 15 additions and 2 deletions
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17
drivers/ptp/ptp_ocp.c
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@ -232,6 +232,7 @@ struct ptp_ocp {
int id;
int n_irqs;
int gnss_port;
int gnss2_port;
int mac_port; /* miniature atomic clock */
int nmea_port;
u8 serial[6];
@ -286,8 +287,8 @@ static int ptp_ocp_ts_enable(void *priv, bool enable);
* 0: N/C
* 1: TS0
* 2: TS1
* 3: GPS
* 4: GPS2 (n/c)
* 3: GNSS
* 4: GNSS2
* 5: MAC
* 6: TS2
* 7: I2C controller
@ -384,6 +385,10 @@ static struct ocp_resource ocp_fb_resource[] = {
OCP_SERIAL_RESOURCE(gnss_port),
.offset = 0x00160000 + 0x1000, .irq_vec = 3,
},
{
OCP_SERIAL_RESOURCE(gnss2_port),
.offset = 0x00170000 + 0x1000, .irq_vec = 4,
},
{
OCP_SERIAL_RESOURCE(mac_port),
.offset = 0x00180000 + 0x1000, .irq_vec = 5,
@ -2100,6 +2105,7 @@ ptp_ocp_device_init(struct ptp_ocp *bp, struct pci_dev *pdev)
bp->ptp_info = ptp_ocp_clock_info;
spin_lock_init(&bp->lock);
bp->gnss_port = -1;
bp->gnss2_port = -1;
bp->mac_port = -1;
bp->nmea_port = -1;
bp->pdev = pdev;
@ -2163,6 +2169,10 @@ ptp_ocp_complete(struct ptp_ocp *bp)
sprintf(buf, "ttyS%d", bp->gnss_port);
ptp_ocp_link_child(bp, buf, "ttyGNSS");
}
if (bp->gnss2_port != -1) {
sprintf(buf, "ttyS%d", bp->gnss2_port);
ptp_ocp_link_child(bp, buf, "ttyGNSS2");
}
if (bp->mac_port != -1) {
sprintf(buf, "ttyS%d", bp->mac_port);
ptp_ocp_link_child(bp, buf, "ttyMAC");
@ -2241,6 +2251,7 @@ ptp_ocp_info(struct ptp_ocp *bp)
ver >> 16);
}
ptp_ocp_serial_info(dev, "GNSS", bp->gnss_port, 115200);
ptp_ocp_serial_info(dev, "GNSS2", bp->gnss2_port, 115200);
ptp_ocp_serial_info(dev, "MAC", bp->mac_port, 57600);
if (bp->nmea_out && bp->nmea_port != -1) {
int baud = -1;
@ -2281,6 +2292,8 @@ ptp_ocp_detach(struct ptp_ocp *bp)
ptp_ocp_unregister_ext(bp->pps);
if (bp->gnss_port != -1)
serial8250_unregister_port(bp->gnss_port);
if (bp->gnss2_port != -1)
serial8250_unregister_port(bp->gnss2_port);
if (bp->mac_port != -1)
serial8250_unregister_port(bp->mac_port);
if (bp->nmea_port != -1)