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Received: from nwd2mta2.analog.com (137.71.25.57) by BL2NAM02FT043.mail.protection.outlook.com (10.152.77.95) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.20.2157.15 via Frontend Transport; Fri, 9 Aug 2019 13:36:19 +0000 Received: from NWD2HUBCAS7.ad.analog.com (nwd2hubcas7.ad.analog.com [10.64.69.107]) by nwd2mta2.analog.com (8.13.8/8.13.8) with ESMTP id x79DaJhU025749 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK); Fri, 9 Aug 2019 06:36:19 -0700 Received: from saturn.ad.analog.com (10.48.65.113) by NWD2HUBCAS7.ad.analog.com (10.64.69.107) with Microsoft SMTP Server id 14.3.408.0; Fri, 9 Aug 2019 09:36:18 -0400 From: Alexandru Ardelean To: , , CC: , , , , , , Alexandru Ardelean Subject: [PATCH v3 11/14] net: phy: adin: implement Energy Detect Powerdown mode Date: Fri, 9 Aug 2019 16:35:49 +0300 Message-ID: <20190809133552.21597-12-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190809133552.21597-1-alexandru.ardelean@analog.com> References: <20190809133552.21597-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ADIRoutedOnPrem: True X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:137.71.25.57;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(39860400002)(396003)(346002)(376002)(136003)(2980300002)(199004)(189003)(2906002)(336012)(36756003)(2870700001)(47776003)(110136005)(76176011)(316002)(246002)(107886003)(7636002)(7696005)(51416003)(14444005)(426003)(2201001)(86362001)(1076003)(8936002)(70586007)(305945005)(486006)(126002)(48376002)(2616005)(476003)(6666004)(356004)(8676002)(11346002)(70206006)(186003)(446003)(4326008)(50226002)(106002)(44832011)(54906003)(478600001)(5660300002)(26005)(50466002);DIR:OUT;SFP:1101;SCL:1;SRVR:DM6PR03MB5033;H:nwd2mta2.analog.com;FPR:;SPF:Pass;LANG:en;PTR:nwd2mail11.analog.com;A:1;MX:1; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4f7ddcca-0d10-422a-024b-08d71cce8fa3 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600148)(711020)(4605104)(4709080)(1401327)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328);SRVR:DM6PR03MB5033; X-MS-TrafficTypeDiagnostic: DM6PR03MB5033: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3631; X-Forefront-PRVS: 01244308DF X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: oqtE5RHkGuxxG51bRuUxbwg01zj9axOAmVkqWeAn5QmncXpFQ8jDP1KE/bhuXsbrLlQs8h2aqOCOpJJiCvqVIZMUsJpzCtEdiEbE+ZQddD4Ose5uBA7ntxtLZb8qJvpKGPNKJpoM5S7xqGIUagh9ra+lIaYor/nh8EF22vHJLps3dKOCfZUcpjRpnJHVkv8KWIQVS81mspQ+FhWMuCgMLqs+xro7inugmTXb97h9z6/1XQOe8TCOCsiPz0ca2VtW9CQXjz5FWvESm/MO3JnCJV5rXDqosRnYe/agNGVx/BTbZiw3wM/cCPawcjvpiSz2BhF4rbgeJegHW78LJAx71GHd+iyQhwkwNi27I17EfWjmNM58DgWeQWshhyWG6aQR3ZAxXJgaowmFIO88Jt8ooFLdV1MHeTdgcOv9UwZoxNA= X-OriginatorOrg: analog.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Aug 2019 13:36:19.3869 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4f7ddcca-0d10-422a-024b-08d71cce8fa3 X-MS-Exchange-CrossTenant-Id: eaa689b4-8f87-40e0-9c6f-7228de4d754a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=eaa689b4-8f87-40e0-9c6f-7228de4d754a;Ip=[137.71.25.57];Helo=[nwd2mta2.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR03MB5033 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-08-09_03:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908090138 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The ADIN PHYs support Energy Detect Powerdown mode, which puts the PHY into a low power mode when there is no signal on the wire (typically cable unplugged). This behavior is enabled by default, but can be disabled via device property. Signed-off-by: Alexandru Ardelean --- drivers/net/phy/adin.c | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/drivers/net/phy/adin.c b/drivers/net/phy/adin.c index 63b57c83de91..e086e2d989e0 100644 --- a/drivers/net/phy/adin.c +++ b/drivers/net/phy/adin.c @@ -24,6 +24,11 @@ #define ADIN1300_AUTO_MDI_EN BIT(10) #define ADIN1300_MAN_MDIX_EN BIT(9) +#define ADIN1300_PHY_CTRL_STATUS2 0x0015 +#define ADIN1300_NRG_PD_EN BIT(3) +#define ADIN1300_NRG_PD_TX_EN BIT(2) +#define ADIN1300_NRG_PD_STATUS BIT(1) + #define ADIN1300_INT_MASK_REG 0x0018 #define ADIN1300_INT_MDIO_SYNC_EN BIT(9) #define ADIN1300_INT_ANEG_STAT_CHNG_EN BIT(8) @@ -138,6 +143,14 @@ static struct adin_clause45_mmd_map adin_clause45_mmd_map[] = { { MDIO_MMD_PCS, MDIO_PCS_EEE_WK_ERR, ADIN1300_LPI_WAKE_ERR_CNT_REG }, }; +/** + * struct adin_priv - ADIN PHY driver private data + * edpd_enabled true if Energy Detect Powerdown mode is enabled + */ +struct adin_priv { + bool edpd_enabled; +}; + static int adin_lookup_reg_value(const struct adin_cfg_reg_map *tbl, int cfg) { size_t i; @@ -246,6 +259,18 @@ static int adin_config_rmii_mode(struct phy_device *phydev) ADIN1300_GE_RMII_CFG_REG, reg); } +static int adin_config_init_edpd(struct phy_device *phydev) +{ + struct adin_priv *priv = phydev->priv; + + if (priv->edpd_enabled) + return phy_set_bits(phydev, ADIN1300_PHY_CTRL_STATUS2, + (ADIN1300_NRG_PD_EN | ADIN1300_NRG_PD_TX_EN)); + + return phy_clear_bits(phydev, ADIN1300_PHY_CTRL_STATUS2, + (ADIN1300_NRG_PD_EN | ADIN1300_NRG_PD_TX_EN)); +} + static int adin_config_init(struct phy_device *phydev) { int rc; @@ -264,6 +289,10 @@ static int adin_config_init(struct phy_device *phydev) if (rc < 0) return rc; + rc = adin_config_init_edpd(phydev); + if (rc < 0) + return rc; + phydev_dbg(phydev, "PHY is using mode '%s'\n", phy_modes(phydev->interface)); @@ -495,6 +524,17 @@ static int adin_reset(struct phy_device *phydev) static int adin_probe(struct phy_device *phydev) { + struct device *dev = &phydev->mdio.dev; + struct adin_priv *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->edpd_enabled = + device_property_read_bool(dev, "adi,disable-energy-detect"); + phydev->priv = priv; + return adin_reset(phydev); } -- 2.20.1