@@ -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, ®val);
+ 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.
@@ -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);
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. 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(+)