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[net-next,v6,12/14] net: ethernet: oa_tc6: add helper function to enable zero align rx frame

Message ID 20240812102611.489550-13-Parthiban.Veerasooran@microchip.com (mailing list archive)
State Changes Requested
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: 29 this patch: 29
netdev/build_tools success Errors and warnings before: 9 this patch: 9
netdev/cc_maintainers success CCed 6 of 6 maintainers
netdev/build_clang success Errors and warnings before: 29 this patch: 29
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: 29 this patch: 29
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 40 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-2024-08-13--12-00 (tests: 706)

Commit Message

Parthiban Veerasooran Aug. 12, 2024, 10:26 a.m. UTC 
Zero align receive frame feature can be enabled to align all receive
ethernet frames data to start at the beginning of any receive data chunk
payload with a start word offset (SWO) of zero. Receive frames may begin
anywhere within the receive data chunk payload when this feature is not
enabled.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
---
 drivers/net/ethernet/oa_tc6.c | 24 ++++++++++++++++++++++++
 include/linux/oa_tc6.h        |  1 +
 2 files changed, 25 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/oa_tc6.c b/drivers/net/ethernet/oa_tc6.c
index b55a3347f58f..fbf9d9ad4175 100644
--- a/drivers/net/ethernet/oa_tc6.c
+++ b/drivers/net/ethernet/oa_tc6.c
@@ -23,6 +23,7 @@ 
 /* Configuration Register #0 */
 #define OA_TC6_REG_CONFIG0			0x0004
 #define CONFIG0_SYNC				BIT(15)
+#define CONFIG0_ZARFE_ENABLE			BIT(12)
 
 /* Status Register #0 */
 #define OA_TC6_REG_STATUS0			0x0008
@@ -1164,6 +1165,29 @@  static irqreturn_t oa_tc6_macphy_isr(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
+/**
+ * oa_tc6_zero_align_receive_frame_enable - function to enable zero align
+ * receive frame feature.
+ * @tc6: oa_tc6 struct.
+ *
+ * Return: 0 on success otherwise failed.
+ */
+int oa_tc6_zero_align_receive_frame_enable(struct oa_tc6 *tc6)
+{
+	u32 regval;
+	int ret;
+
+	ret = oa_tc6_read_register(tc6, OA_TC6_REG_CONFIG0, &regval);
+	if (ret)
+		return ret;
+
+	/* Set Zero-Align Receive Frame Enable */
+	regval |= CONFIG0_ZARFE_ENABLE;
+
+	return oa_tc6_write_register(tc6, OA_TC6_REG_CONFIG0, regval);
+}
+EXPORT_SYMBOL_GPL(oa_tc6_zero_align_receive_frame_enable);
+
 /**
  * oa_tc6_start_xmit - function for sending the tx skb which consists ethernet
  * frame.
diff --git a/include/linux/oa_tc6.h b/include/linux/oa_tc6.h
index 5c7811ac9cbe..15f58e3c56c7 100644
--- a/include/linux/oa_tc6.h
+++ b/include/linux/oa_tc6.h
@@ -21,3 +21,4 @@  int oa_tc6_read_register(struct oa_tc6 *tc6, u32 address, u32 *value);
 int oa_tc6_read_registers(struct oa_tc6 *tc6, u32 address, u32 value[],
 			  u8 length);
 netdev_tx_t oa_tc6_start_xmit(struct oa_tc6 *tc6, struct sk_buff *skb);
+int oa_tc6_zero_align_receive_frame_enable(struct oa_tc6 *tc6);