[RFC PATCH v3 net-next 07/10] net: mscc: ocelot: expose ocelot wm functions

Colin Foster
2021-08-14T02:50:35Z

Expose ocelot_wm functions so they can be shared with other drivers.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
---
drivers/net/ethernet/mscc/Makefile | 1 +
drivers/net/ethernet/mscc/ocelot_vsc7514.c | 28 ----------------
drivers/net/ethernet/mscc/ocelot_wm.c | 39 ++++++++++++++++++++++
include/soc/mscc/ocelot.h | 5 +++
4 files changed, 45 insertions(+), 28 deletions(-)
create mode 100644 drivers/net/ethernet/mscc/ocelot_wm.c

diff --git a/drivers/net/ethernet/mscc/Makefile b/drivers/net/ethernet/mscc/Makefile
index d539a231a478..4ea9ecdfa60c 100644
--- a/drivers/net/ethernet/mscc/Makefile
+++ b/drivers/net/ethernet/mscc/Makefile
@@ -8,6 +8,7 @@ mscc_ocelot_switch_lib-y := \
ocelot_flower.o \
ocelot_ptp.o \
ocelot_regs.o \
+ ocelot_wm.o \
ocelot_devlink.o
mscc_ocelot_switch_lib-$(CONFIG_BRIDGE_MRP) += ocelot_mrp.o
obj-$(CONFIG_MSCC_OCELOT_SWITCH) += mscc_ocelot.o
diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index ef1bf24f51b5..6e58f95a8dad 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -302,34 +302,6 @@ static int ocelot_reset(struct ocelot *ocelot)
return 0;
}

-/* Watermark encode
- * Bit 8: Unit; 0:1, 1:16
- * Bit 7-0: Value to be multiplied with unit
- */
-static u16 ocelot_wm_enc(u16 value)
-{
- WARN_ON(value >= 16 * BIT(8));
-
- if (value >= BIT(8))
- return BIT(8) | (value / 16);
-
- return value;
-}
-
-static u16 ocelot_wm_dec(u16 wm)
-{
- if (wm & BIT(8))
- return (wm & GENMASK(7, 0)) * 16;
-
- return wm;
-}
-
-static void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse)
-{
- *inuse = (val & GENMASK(23, 12)) >> 12;
- *maxuse = val & GENMASK(11, 0);
-}
-
static const struct ocelot_ops ocelot_ops = {
.reset = ocelot_reset,
.wm_enc = ocelot_wm_enc,
diff --git a/drivers/net/ethernet/mscc/ocelot_wm.c b/drivers/net/ethernet/mscc/ocelot_wm.c
new file mode 100644
index 000000000000..b21315b7b7f2
--- /dev/null
+++ b/drivers/net/ethernet/mscc/ocelot_wm.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Microsemi Ocelot Switch driver
+ *
+ * Copyright (c) 2017 Microsemi Corporation
+ */
+
+#include "ocelot.h"
+
+/* Watermark encode
+ * Bit 8: Unit; 0:1, 1:16
+ * Bit 7-0: Value to be multiplied with unit
+ */
+u16 ocelot_wm_enc(u16 value)
+{
+ WARN_ON(value >= 16 * BIT(8));
+
+ if (value >= BIT(8))
+ return BIT(8) | (value / 16);
+
+ return value;
+}
+EXPORT_SYMBOL(ocelot_wm_enc);
+
+u16 ocelot_wm_dec(u16 wm)
+{
+ if (wm & BIT(8))
+ return (wm & GENMASK(7, 0)) * 16;
+
+ return wm;
+}
+EXPORT_SYMBOL(ocelot_wm_dec);
+
+void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse)
+{
+ *inuse = (val & GENMASK(23, 12)) >> 12;
+ *maxuse = val & GENMASK(11, 0);
+}
+EXPORT_SYMBOL(ocelot_wm_stat);
diff --git a/include/soc/mscc/ocelot.h b/include/soc/mscc/ocelot.h
index 2f5ce4d4fdbf..ff6e65a266d6 100644
--- a/include/soc/mscc/ocelot.h
+++ b/include/soc/mscc/ocelot.h
@@ -797,6 +797,11 @@ void ocelot_deinit(struct ocelot *ocelot);
void ocelot_init_port(struct ocelot *ocelot, int port);
void ocelot_deinit_port(struct ocelot *ocelot, int port);

+/* Watermark interface */
+u16 ocelot_wm_enc(u16 value);
+u16 ocelot_wm_dec(u16 wm);
+void ocelot_wm_stat(u32 val, u32 *inuse, u32 *maxuse);
+
/* DSA callbacks */
void ocelot_port_enable(struct ocelot *ocelot, int port,
struct phy_device *phy);
--
2.25.1