diff mbox series

[net-next] net: dsa: microchip: Do not execute PTP driver code for unsupported switches

Message ID 20241218020240.70601-1-Tristram.Ha@microchip.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series [net-next] net: dsa: microchip: Do not execute PTP driver code for unsupported switches | expand

Checks

Context Check Description
netdev/series_format success Single patches do not need cover letters
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: richardcochran@gmail.com
netdev/build_clang success Errors and warnings before: 55 this patch: 55
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 132 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest fail net-next-2024-12-18--03-01 (tests: 879)

Commit Message

Tristram.Ha@microchip.com Dec. 18, 2024, 2:02 a.m. UTC 
From: Tristram Ha <tristram.ha@microchip.com>

The PTP driver code only works for certain KSZ switches like KSZ9477,
KSZ9567, LAN937X and their varieties.  This code is enabled by kernel
configuration CONFIG_NET_DSA_MICROCHIP_KSZ_PTP.  As the DSA driver is
common to work with all KSZ switches this PTP code is not appropriate
for other unsupported switches.  The ptp_capable indication is added to
the chip data structure to signal whether to execute those code.

Signed-off-by: Tristram Ha <tristram.ha@microchip.com>
---
 drivers/net/dsa/microchip/ksz_common.c | 40 +++++++++++++++++++-------
 drivers/net/dsa/microchip/ksz_common.h |  1 +
 2 files changed, 30 insertions(+), 11 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index df314724e6a7..2c465c466222 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -1339,6 +1339,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.supports_rgmii = {false, false, true},
 		.internal_phy = {true, true, false},
 		.gbit_capable = {false, false, true},
+		.ptp_capable = true,
 		.wr_table = &ksz8563_register_set,
 		.rd_table = &ksz8563_register_set,
 	},
@@ -1550,6 +1551,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.internal_phy	= {true, true, true, true,
 				   true, false, false},
 		.gbit_capable	= {true, true, true, true, true, true, true},
+		.ptp_capable = true,
 		.wr_table = &ksz9477_register_set,
 		.rd_table = &ksz9477_register_set,
 	},
@@ -1677,6 +1679,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.supports_rgmii = {false, false, true},
 		.internal_phy = {true, true, false},
 		.gbit_capable = {true, true, true},
+		.ptp_capable = true,
 	},
 
 	[KSZ8567] = {
@@ -1712,6 +1715,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 				   true, false, false},
 		.gbit_capable	= {false, false, false, false, false,
 				   true, true},
+		.ptp_capable = true,
 	},
 
 	[KSZ9567] = {
@@ -1744,6 +1748,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.internal_phy	= {true, true, true, true,
 				   true, false, false},
 		.gbit_capable	= {true, true, true, true, true, true, true},
+		.ptp_capable = true,
 	},
 
 	[LAN9370] = {
@@ -1773,6 +1778,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.supports_rmii = {false, false, false, false, true},
 		.supports_rgmii = {false, false, false, false, true},
 		.internal_phy = {true, true, true, true, false},
+		.ptp_capable = true,
 	},
 
 	[LAN9371] = {
@@ -1802,6 +1808,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 		.supports_rmii = {false, false, false, false, true, true},
 		.supports_rgmii = {false, false, false, false, true, true},
 		.internal_phy = {true, true, true, true, false, false},
+		.ptp_capable = true,
 	},
 
 	[LAN9372] = {
@@ -1835,6 +1842,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 				   true, true, false, false},
 		.internal_phy	= {true, true, true, true,
 				   false, false, true, true},
+		.ptp_capable = true,
 	},
 
 	[LAN9373] = {
@@ -1868,6 +1876,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 				   true, true, false, false},
 		.internal_phy	= {true, true, true, false,
 				   false, false, true, true},
+		.ptp_capable = true,
 	},
 
 	[LAN9374] = {
@@ -1901,6 +1910,7 @@  const struct ksz_chip_data ksz_switch_chips[] = {
 				   true, true, false, false},
 		.internal_phy	= {true, true, true, true,
 				   false, false, true, true},
+		.ptp_capable = true,
 	},
 
 	[LAN9646] = {
@@ -2809,16 +2819,21 @@  static int ksz_setup(struct dsa_switch *ds)
 			if (ret)
 				goto out_girq;
 
-			ret = ksz_ptp_irq_setup(ds, dp->index);
-			if (ret)
-				goto out_pirq;
+			if (dev->info->ptp_capable) {
+				ret = ksz_ptp_irq_setup(ds, dp->index);
+				if (ret)
+					goto out_pirq;
+			}
 		}
 	}
 
-	ret = ksz_ptp_clock_register(ds);
-	if (ret) {
-		dev_err(dev->dev, "Failed to register PTP clock: %d\n", ret);
-		goto out_ptpirq;
+	if (dev->info->ptp_capable) {
+		ret = ksz_ptp_clock_register(ds);
+		if (ret) {
+			dev_err(dev->dev, "Failed to register PTP clock: %d\n",
+				ret);
+			goto out_ptpirq;
+		}
 	}
 
 	ret = ksz_mdio_register(dev);
@@ -2838,9 +2853,10 @@  static int ksz_setup(struct dsa_switch *ds)
 	return 0;
 
 out_ptp_clock_unregister:
-	ksz_ptp_clock_unregister(ds);
+	if (dev->info->ptp_capable)
+		ksz_ptp_clock_unregister(ds);
 out_ptpirq:
-	if (dev->irq > 0)
+	if (dev->irq > 0 && dev->info->ptp_capable)
 		dsa_switch_for_each_user_port(dp, dev->ds)
 			ksz_ptp_irq_free(ds, dp->index);
 out_pirq:
@@ -2859,11 +2875,13 @@  static void ksz_teardown(struct dsa_switch *ds)
 	struct ksz_device *dev = ds->priv;
 	struct dsa_port *dp;
 
-	ksz_ptp_clock_unregister(ds);
+	if (dev->info->ptp_capable)
+		ksz_ptp_clock_unregister(ds);
 
 	if (dev->irq > 0) {
 		dsa_switch_for_each_user_port(dp, dev->ds) {
-			ksz_ptp_irq_free(ds, dp->index);
+			if (dev->info->ptp_capable)
+				ksz_ptp_irq_free(ds, dp->index);
 
 			ksz_irq_free(&dev->ports[dp->index].pirq);
 		}
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index b3bb75ca0796..97f0ff16dc50 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -92,6 +92,7 @@  struct ksz_chip_data {
 	bool supports_rgmii[KSZ_MAX_NUM_PORTS];
 	bool internal_phy[KSZ_MAX_NUM_PORTS];
 	bool gbit_capable[KSZ_MAX_NUM_PORTS];
+	bool ptp_capable;
 	const struct regmap_access_table *wr_table;
 	const struct regmap_access_table *rd_table;
 };