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Message-ID: <20240903104705.378684-9-Parthiban.Veerasooran@microchip.com>
Date: Tue, 3 Sep 2024 16:16:59 +0530
From: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
To: <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <horms@...nel.org>, <saeedm@...dia.com>,
<anthony.l.nguyen@...el.com>, <netdev@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <andrew@...n.ch>, <corbet@....net>,
<linux-doc@...r.kernel.org>, <robh+dt@...nel.org>,
<krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
<devicetree@...r.kernel.org>, <horatiu.vultur@...rochip.com>,
<ruanjinjie@...wei.com>, <steen.hegelund@...rochip.com>,
<vladimir.oltean@....com>
CC: <parthiban.veerasooran@...rochip.com>, <masahiroy@...nel.org>,
<alexanderduyck@...com>, <krzk+dt@...nel.org>, <robh@...nel.org>,
<rdunlap@...radead.org>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
<UNGLinuxDriver@...rochip.com>, <Thorsten.Kummermehr@...rochip.com>,
<Pier.Beruto@...emi.com>, <Selvamani.Rajagopal@...emi.com>,
<Nicolas.Ferre@...rochip.com>, <benjamin.bigler@...nformulastudent.ch>,
<linux@...ler.io>, <markku.vorne@...power.com>, Parthiban Veerasooran
<Parthiban.Veerasooran@...rochip.com>
Subject: [PATCH net-next v7 08/14] 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: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
---
drivers/net/ethernet/oa_tc6.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
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);
--
2.34.1
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