net: mscc: ocelot: move ocelot ptp clock code out of ocelot.c

The Ocelot PTP clock driver had been embedded into ocelot.c driver.
It had supported basic gettime64/settime64/adjtime/adjfine functions
by now which were used by both Ocelot switch and Felix switch.

This patch is to move current ptp clock code out of ocelot.c driver
maintaining as a single ocelot_ptp.c.
For futher new features implementation, the common code could be put
in ocelot_ptp.c and the switch specific code should be in specific
switch driver. The interrupt implementation in SoC is different
between Ocelot and Felix.

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 25 insertions, 0 deletions

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index d0a3764ff0cf..44015a24b087 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -7,6 +7,7 @@
 #include <soc/mscc/ocelot_sys.h>
 #include <soc/mscc/ocelot_dev.h>
 #include <soc/mscc/ocelot_ana.h>
+#include <soc/mscc/ocelot_ptp.h>
 #include <soc/mscc/ocelot.h>
 #include <linux/packing.h>
 #include <linux/module.h>
@@ -494,6 +495,21 @@ static int felix_init_structs(struct felix *felix, int num_phys_ports)
 	return 0;
 }
 
+static struct ptp_clock_info ocelot_ptp_clock_info = {
+	.owner		= THIS_MODULE,
+	.name		= "felix ptp",
+	.max_adj	= 0x7fffffff,
+	.n_alarm	= 0,
+	.n_ext_ts	= 0,
+	.n_per_out	= 0,
+	.n_pins		= 0,
+	.pps		= 0,
+	.gettime64	= ocelot_ptp_gettime64,
+	.settime64	= ocelot_ptp_settime64,
+	.adjtime	= ocelot_ptp_adjtime,
+	.adjfine	= ocelot_ptp_adjfine,
+};
+
 /* Hardware initialization done here so that we can allocate structures with
  * devm without fear of dsa_register_switch returning -EPROBE_DEFER and causing
  * us to allocate structures twice (leak memory) and map PCI memory twice
@@ -510,6 +526,14 @@ static int felix_setup(struct dsa_switch *ds)
 		return err;
 
 	ocelot_init(ocelot);
+	if (ocelot->ptp) {
+		err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
+		if (err) {
+			dev_err(ocelot->dev,
+				"Timestamp initialization failed\n");
+			ocelot->ptp = 0;
+		}
+	}
 
 	for (port = 0; port < ds->num_ports; port++) {
 		ocelot_init_port(ocelot, port);
@@ -548,6 +572,7 @@ static void felix_teardown(struct dsa_switch *ds)
 	if (felix->info->mdio_bus_free)
 		felix->info->mdio_bus_free(ocelot);
 
+	ocelot_deinit_timestamp(ocelot);
 	/* stop workqueue thread */
 	ocelot_deinit(ocelot);
 }