From patchwork Thu Apr 18 12:56:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Parthiban Veerasooran X-Patchwork-Id: 13634701 X-Patchwork-Delegate: kuba@kernel.org Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7C16B823A2; Thu, 18 Apr 2024 12:58:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713445102; cv=none; b=NQ+tO/tSlrNt7qS4qJ28KGT7E1Ugu3QCPGtTNiBew0/WVlqOtsHacPOGSZpXH4JrFssc7WSx2XGG+xr62kA8JYOswbAtfly/CaBI1xA88EcQkvVC+a5vIoS0UZpcvbg+iVMJXiuc7LJbZZ2wWtK4jj9buViIpqICOIyqmfZxVtI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713445102; c=relaxed/simple; bh=g/clOTZF0kpYycmj/CTQC6MpCGn/0W/VGH9B4y7Nvwo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=LmHG0bZgOoD+2hrgIneSLelq16z8Mn4Y6RSIFP+lpOtWp7h8wQfEI57ygwFdielsL1YGNPIyjDJQEeEca93CSI46jThflqC2Sy99S3JSaORiN3KGcXsP7JnbjLuoaDIwjTMZwGn4dTX9Ewa3bivtehwX0x4SSqF+zAUgNvJIwmE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=GM503ecn; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="GM503ecn" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1713445101; x=1744981101; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=g/clOTZF0kpYycmj/CTQC6MpCGn/0W/VGH9B4y7Nvwo=; b=GM503ecnAXxkXm3pz2B0QuMfnDNvXG8fsEbVPOVyor0cFPsSzLptF1B1 tN7f7vB8JM/wjwhVurLoD29HY3RuFtzRqQjVfSgV15UQpFTbqw0gwHqOn 2IZlBFRgd50lg/ljwmJ4jptaTF4O/it0gZNzjVKrssOokSemoZ93gN/8U IU/+Xh4dhmOFp3iZ+3KHBJCeDRN1U33ymz3sS+qZwBG8GyzTosxSXBQiC VBY8EjQqnSm3zSoKwQ3Z8r+K/WgGOj4+xF4gaQbKYxRfBaBIkF0UYdC5l OZvHLnTfMT6quEG8oeVl+ocUIUMrUkFi2iHGSPMTRb/UMxflTjeIdcu74 g==; X-CSE-ConnectionGUID: Xcx2pWi4Tle/BYeos1za0g== X-CSE-MsgGUID: QnsaPHzES4+/75OvoYaQXg== X-IronPort-AV: E=Sophos;i="6.07,212,1708412400"; d="scan'208";a="21604090" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa3.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 18 Apr 2024 05:58:19 -0700 Received: from chn-vm-ex02.mchp-main.com (10.10.85.144) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 18 Apr 2024 05:57:47 -0700 Received: from CHE-LT-I17164LX.microchip.com (10.10.85.11) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Thu, 18 Apr 2024 05:57:38 -0700 From: Parthiban Veerasooran To: , , , , , , , , , , , , , , , , , , , CC: , , , , , , Parthiban Veerasooran Subject: [PATCH net-next v4 07/12] net: ethernet: oa_tc6: enable open alliance tc6 data communication Date: Thu, 18 Apr 2024 18:26:43 +0530 Message-ID: <20240418125648.372526-8-Parthiban.Veerasooran@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240418125648.372526-1-Parthiban.Veerasooran@microchip.com> References: <20240418125648.372526-1-Parthiban.Veerasooran@microchip.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org 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. Signed-off-by: Parthiban Veerasooran Reviewed-by: Andrew Lunn --- 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 f04c4c13e8d3..ef7069618319 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 */ @@ -556,6 +560,21 @@ 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. @@ -613,7 +632,18 @@ 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);