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[net-next,v8,08/14] net: ethernet: oa_tc6: enable open alliance tc6 data communication

Message ID 20240909082514.262942-9-Parthiban.Veerasooran@microchip.com (mailing list archive)
State Accepted
Commit f845a027de66d1efeb8cb22020e2c50baebdc441
Delegated to: Netdev Maintainers
Headers show
Series Add support for OPEN Alliance 10BASE-T1x MACPHY Serial Interface | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
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: 16 this patch: 16
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 16 this patch: 16
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: 16 this patch: 16
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 49 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 success net-next-2024-09-12--00-00 (tests: 764)

Commit Message

Parthiban Veerasooran Sept. 9, 2024, 8:25 a.m. UTC
Enabling Configuration Synchronization bit (SYNC) in the Configuration
Register #0 enables data communication in the MAC-PHY. The state of this
bit is reflected in the data footer SYNC bit.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
---
 drivers/net/ethernet/oa_tc6.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/oa_tc6.c b/drivers/net/ethernet/oa_tc6.c
index fc276d881dc9..8958af863b6e 100644
--- a/drivers/net/ethernet/oa_tc6.c
+++ b/drivers/net/ethernet/oa_tc6.c
@@ -20,6 +20,10 @@ 
 #define OA_TC6_REG_RESET			0x0003
 #define RESET_SWRESET				BIT(0)	/* Software Reset */
 
+/* Configuration Register #0 */
+#define OA_TC6_REG_CONFIG0			0x0004
+#define CONFIG0_SYNC				BIT(15)
+
 /* Status Register #0 */
 #define OA_TC6_REG_STATUS0			0x0008
 #define STATUS0_RESETC				BIT(6)	/* Reset Complete */
@@ -559,6 +563,21 @@  static int oa_tc6_unmask_macphy_error_interrupts(struct oa_tc6 *tc6)
 	return oa_tc6_write_register(tc6, OA_TC6_REG_INT_MASK0, regval);
 }
 
+static int oa_tc6_enable_data_transfer(struct oa_tc6 *tc6)
+{
+	u32 value;
+	int ret;
+
+	ret = oa_tc6_read_register(tc6, OA_TC6_REG_CONFIG0, &value);
+	if (ret)
+		return ret;
+
+	/* Enable configuration synchronization for data transfer */
+	value |= CONFIG0_SYNC;
+
+	return oa_tc6_write_register(tc6, OA_TC6_REG_CONFIG0, value);
+}
+
 /**
  * oa_tc6_init - allocates and initializes oa_tc6 structure.
  * @spi: device with which data will be exchanged.
@@ -618,7 +637,18 @@  struct oa_tc6 *oa_tc6_init(struct spi_device *spi, struct net_device *netdev)
 		return NULL;
 	}
 
+	ret = oa_tc6_enable_data_transfer(tc6);
+	if (ret) {
+		dev_err(&tc6->spi->dev, "Failed to enable data transfer: %d\n",
+			ret);
+		goto phy_exit;
+	}
+
 	return tc6;
+
+phy_exit:
+	oa_tc6_phy_exit(tc6);
+	return NULL;
 }
 EXPORT_SYMBOL_GPL(oa_tc6_init);