Commit f845a027 authored by Parthiban Veerasooran's avatar Parthiban Veerasooran Committed by Jakub Kicinski
Browse files

net: ethernet: oa_tc6: enable open alliance tc6 data communication 



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: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarParthiban Veerasooran <Parthiban.Veerasooran@microchip.com>
Link: https://patch.msgid.link/20240909082514.262942-9-Parthiban.Veerasooran@microchip.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 18a91876

drivers/net/ethernet/oa_tc6.c

+30 −0
Original line number Diff line number Diff line
@@ -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);