From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6632BC33CB6 for ; Wed, 22 Jan 2020 10:47:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 327462467B for ; Wed, 22 Jan 2020 10:47:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cadence.com header.i=@cadence.com header.b="hsiPPPbO"; dkim=pass (1024-bit key) header.d=cadence.com header.i=@cadence.com header.b="tETPDNQo" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729537AbgAVKpk (ORCPT ); Wed, 22 Jan 2020 05:45:40 -0500 Received: from mx0b-0014ca01.pphosted.com ([208.86.201.193]:56532 "EHLO mx0a-0014ca01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729066AbgAVKpj (ORCPT ); Wed, 22 Jan 2020 05:45:39 -0500 Received: from pps.filterd (m0042333.ppops.net [127.0.0.1]) by mx0b-0014ca01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 00MAipjr016477; Wed, 22 Jan 2020 02:45:29 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cadence.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=proofpoint; bh=2jrrthqidaIPvK7iaIgnUE69C0Z7MDg7V6EglWzhoo8=; b=hsiPPPbOM94yvw4UPMB8KcV4QjCrv3iP1NlbvT6dJpWFr0xX/dzkZ+1SEJ93Z2thSjJz vDEOPvB7MRLtCa8iRYkEAY0kJCJK/a4gItKu6wgn/Da+ag1uo6AcBCGh/ryBTNC0k7Vt DxrYgGbr+ftplScIBmgcAIDHZg+09/N5WRsXc1/FKXTqaitnUfw4kJGL5L4I8z6Ox9J7 N1zCuhLOqBiE+eBnqWRKoMQNCtP+DOkWtrrfOPn2YrqOhWy+9uSBiBBJOqUzkpRrnB29 EGsf3zy10CP1VDcgvmbdav34wtnUlwYmXtMnsZ1FGLySsI479jwffOAzgfJhLaBVfXZ6 rQ== Received: from nam11-bn8-obe.outbound.protection.outlook.com (mail-bn8nam11lp2172.outbound.protection.outlook.com [104.47.58.172]) by mx0b-0014ca01.pphosted.com with ESMTP id 2xkxg3vsss-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 22 Jan 2020 02:45:28 -0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=mmRoGSU5sHvKX/+u8x5O3qsYV2onhm3Bd16nPJqxqYX2vyBUKojQR7cNDbl1hm52otAy1gY2VoYfieIFBzCxhUj6B3YoVI8l4mBRX4X/GKp4ocvZA6CZ0K4FnBhWY2blhq49k+M0LQWVvwK0vojezcUY6NTq215v4h7RuDOSp/dYZIC2KLKl8eCgDhoskvhkED35NCOClmsBL8tGWcPOXRweMoYgQsbM7c+ERzFRSqSIYklU7Kf3ly4mLJPx3z/s/GqyR+7MWQ5U3Wq9/mFL+soB9Od4hJOCM+c+gvf0cx1OVacFUiFL+/s2AjUBw7A3g/kcHisdGE0kLA/xDu33SA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=2jrrthqidaIPvK7iaIgnUE69C0Z7MDg7V6EglWzhoo8=; b=VTzRXrNLFp73q7GzgIsUOKRgB8X/d+NWD/iUy3a3DL75+Vj9EOfKe5y+Q/1zdF9WoUHSLSt33Jn3oqrKc2Djy8yFl15opIP8Kc0PXIjQGlDCqjnV7u3mGAOPbo0W1DC9Njw3ik1h0FOSMV904bOTTy+LmGl8Bqvr7Ag9cxsC2AmPLSFlYxdwfY+yWaW2e26DftwYCYDlF4WH7RXTSB8Z0ZtFDOKDPSpeGtmZIzT/M11MTXLd3jys/egQ6D7+917y2D9DY0vTpjJAAgvlXlZti4HCqpkDlOVYanoCAZQ6jbzC+ejcO+ugja2Q2P9tgXlJ6AtFEocltyzb9IyJ+f+a1A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 158.140.1.28) smtp.rcpttodomain=ti.com smtp.mailfrom=cadence.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=cadence.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cadence.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=2jrrthqidaIPvK7iaIgnUE69C0Z7MDg7V6EglWzhoo8=; b=tETPDNQooaAY9VEIgK+inVS49e0Yz+lmWJuGDPDG19Sthw5if7lkmZ4JyY+kpqycw+rrNqeltLLqc0Q2Ug963irR6w5u9h9yBg2qcYVwbC2Y95PYme8swhN+pUJpsTUAqbPHMVGyYS7GUQLIWj+Wy0cdG3JmIZjfGiYFyIkRA7E= Received: from MN2PR07CA0003.namprd07.prod.outlook.com (2603:10b6:208:1a0::13) by BN3PR07MB2499.namprd07.prod.outlook.com (2a01:111:e400:c5f0::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2644.24; Wed, 22 Jan 2020 10:45:26 +0000 Received: from DM6NAM12FT059.eop-nam12.prod.protection.outlook.com (2a01:111:f400:fe59::200) by MN2PR07CA0003.outlook.office365.com (2603:10b6:208:1a0::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2644.18 via Frontend Transport; Wed, 22 Jan 2020 10:45:26 +0000 Received-SPF: Pass (protection.outlook.com: domain of cadence.com designates 158.140.1.28 as permitted sender) receiver=protection.outlook.com; client-ip=158.140.1.28; helo=sjmaillnx1.cadence.com; Received: from sjmaillnx1.cadence.com (158.140.1.28) by DM6NAM12FT059.mail.protection.outlook.com (10.13.179.1) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2665.6 via Frontend Transport; Wed, 22 Jan 2020 10:45:26 +0000 Received: from maileu3.global.cadence.com (maileu3.cadence.com [10.160.88.99]) by sjmaillnx1.cadence.com (8.14.4/8.14.4) with ESMTP id 00MAjKBF001726 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK); Wed, 22 Jan 2020 02:45:25 -0800 X-CrossPremisesHeadersFilteredBySendConnector: maileu3.global.cadence.com Received: from maileu3.global.cadence.com (10.160.88.99) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Wed, 22 Jan 2020 11:45:21 +0100 Received: from vleu-orange.cadence.com (10.160.88.83) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Wed, 22 Jan 2020 11:45:21 +0100 Received: from vleu-orange.cadence.com (localhost.localdomain [127.0.0.1]) by vleu-orange.cadence.com (8.14.4/8.14.4) with ESMTP id 00MAjLbi007260; Wed, 22 Jan 2020 11:45:21 +0100 Received: (from yamonkar@localhost) by vleu-orange.cadence.com (8.14.4/8.14.4/Submit) id 00MAjLG9007259; Wed, 22 Jan 2020 11:45:21 +0100 From: Yuti Amonkar To: , , , , , CC: , , , , , Subject: [PATCH v3 06/14] phy: cadence-torrent: Refactor code for reusability Date: Wed, 22 Jan 2020 11:45:10 +0100 Message-ID: <1579689918-7181-7-git-send-email-yamonkar@cadence.com> X-Mailer: git-send-email 2.4.5 In-Reply-To: <1579689918-7181-1-git-send-email-yamonkar@cadence.com> References: <1579689918-7181-1-git-send-email-yamonkar@cadence.com> MIME-Version: 1.0 Content-Type: text/plain X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:158.140.1.28;IPV:CAL;SCL:-1;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(4636009)(39860400002)(396003)(346002)(376002)(136003)(199004)(189003)(36092001)(2906002)(246002)(86362001)(7636002)(6666004)(5660300002)(356004)(426003)(336012)(70206006)(107886003)(186003)(2616005)(8936002)(478600001)(8676002)(70586007)(316002)(110136005)(26826003)(54906003)(26005)(4326008)(42186006)(36756003);DIR:OUT;SFP:1101;SCL:1;SRVR:BN3PR07MB2499;H:sjmaillnx1.cadence.com;FPR:;SPF:Pass;LANG:en;PTR:corp.Cadence.COM;A:1;MX:1; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 69fd411c-2daf-4a7e-84f5-08d79f28311d X-MS-TrafficTypeDiagnostic: BN3PR07MB2499: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:1060; X-Forefront-PRVS: 029097202E X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jan 2020 10:45:26.6571 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 69fd411c-2daf-4a7e-84f5-08d79f28311d X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9;Ip=[158.140.1.28];Helo=[sjmaillnx1.cadence.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR07MB2499 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-17_05:2020-01-16,2020-01-17 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 phishscore=0 suspectscore=0 bulkscore=0 priorityscore=1501 spamscore=0 malwarescore=0 clxscore=1015 mlxlogscore=999 mlxscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-2001220098 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Swapnil Jakhade Add a separate function to set different power state values. Use uniform polling timeout value. Also check return values of functions for proper error handling. Signed-off-by: Swapnil Jakhade --- drivers/phy/cadence/phy-cadence-torrent.c | 230 ++++++++++++++++++------------ 1 file changed, 137 insertions(+), 93 deletions(-) diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c index 5c7c185..b180fba 100644 --- a/drivers/phy/cadence/phy-cadence-torrent.c +++ b/drivers/phy/cadence/phy-cadence-torrent.c @@ -22,7 +22,7 @@ #define MAX_NUM_LANES 4 #define DEFAULT_MAX_BIT_RATE 8100 /* in Mbps */ -#define POLL_TIMEOUT_US 2000 +#define POLL_TIMEOUT_US 5000 #define LANE_MASK 0x7 /* @@ -39,6 +39,7 @@ #define PHY_POWER_STATE_LN_1 0x0008 #define PHY_POWER_STATE_LN_2 0x0010 #define PHY_POWER_STATE_LN_3 0x0018 +#define PMA_XCVR_POWER_STATE_REQ_LN_MASK 0x3FU #define PHY_PMA_XCVR_POWER_STATE_ACK 0x30 #define PHY_PMA_CMN_READY 0x34 #define PHY_PMA_XCVR_TX_VMARGIN 0x38 @@ -109,10 +110,17 @@ struct cdns_torrent_phy { struct device *dev; }; +enum phy_powerstate { + POWERSTATE_A0 = 0, + /* Powerstate A1 is unused */ + POWERSTATE_A2 = 2, + POWERSTATE_A3 = 3, +}; + static int cdns_torrent_dp_init(struct phy *phy); -static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy); +static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy); static -void cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy); +int cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy); static void cdns_torrent_dp_pma_cfg(struct cdns_torrent_phy *cdns_phy); static void cdns_torrent_dp_pma_cmn_cfg_25mhz(struct cdns_torrent_phy *cdns_phy); @@ -158,9 +166,46 @@ static u32 cdns_torrent_dp_read(struct cdns_torrent_phy *cdns_phy, u32 offset) readl_poll_timeout((cdns_phy)->base + (offset), \ val, cond, delay_us, timeout_us) +/* Set power state A0 and PLL clock enable to 0 on enabled lanes. */ +static void cdns_torrent_dp_set_a0_pll(struct cdns_torrent_phy *cdns_phy, + u32 num_lanes) +{ + u32 pwr_state = cdns_torrent_dp_read(cdns_phy, + PHY_PMA_XCVR_POWER_STATE_REQ); + u32 pll_clk_en = cdns_torrent_dp_read(cdns_phy, + PHY_PMA_XCVR_PLLCLK_EN); + + /* Lane 0 is always enabled. */ + pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK << + PHY_POWER_STATE_LN_0); + pll_clk_en &= ~0x01U; + + if (num_lanes > 1) { + /* lane 1 */ + pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK << + PHY_POWER_STATE_LN_1); + pll_clk_en &= ~(0x01U << 1); + } + + if (num_lanes > 2) { + /* lanes 2 and 3 */ + pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK << + PHY_POWER_STATE_LN_2); + pwr_state &= ~(PMA_XCVR_POWER_STATE_REQ_LN_MASK << + PHY_POWER_STATE_LN_3); + pll_clk_en &= ~(0x01U << 2); + pll_clk_en &= ~(0x01U << 3); + } + + cdns_torrent_dp_write(cdns_phy, + PHY_PMA_XCVR_POWER_STATE_REQ, pwr_state); + cdns_torrent_dp_write(cdns_phy, PHY_PMA_XCVR_PLLCLK_EN, pll_clk_en); +} + static int cdns_torrent_dp_init(struct phy *phy) { unsigned char lane_bits; + int ret; struct cdns_torrent_phy *cdns_phy = phy_get_drvdata(phy); @@ -173,40 +218,7 @@ static int cdns_torrent_dp_init(struct phy *phy) * Set lines power state to A0 * Set lines pll clk enable to 0 */ - - cdns_dp_phy_write_field(cdns_phy, PHY_PMA_XCVR_POWER_STATE_REQ, - PHY_POWER_STATE_LN_0, 6, 0x0000); - - if (cdns_phy->num_lanes >= 2) { - cdns_dp_phy_write_field(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_REQ, - PHY_POWER_STATE_LN_1, 6, 0x0000); - - if (cdns_phy->num_lanes == 4) { - cdns_dp_phy_write_field(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_REQ, - PHY_POWER_STATE_LN_2, 6, 0); - cdns_dp_phy_write_field(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_REQ, - PHY_POWER_STATE_LN_3, 6, 0); - } - } - - cdns_dp_phy_write_field(cdns_phy, PHY_PMA_XCVR_PLLCLK_EN, - 0, 1, 0x0000); - - if (cdns_phy->num_lanes >= 2) { - cdns_dp_phy_write_field(cdns_phy, PHY_PMA_XCVR_PLLCLK_EN, - 1, 1, 0x0000); - if (cdns_phy->num_lanes == 4) { - cdns_dp_phy_write_field(cdns_phy, - PHY_PMA_XCVR_PLLCLK_EN, - 2, 1, 0x0000); - cdns_dp_phy_write_field(cdns_phy, - PHY_PMA_XCVR_PLLCLK_EN, - 3, 1, 0x0000); - } - } + cdns_torrent_dp_set_a0_pll(cdns_phy, cdns_phy->num_lanes); /* * release phy_l0*_reset_n and pma_tx_elec_idle_ln_* based on @@ -225,23 +237,31 @@ static int cdns_torrent_dp_init(struct phy *phy) /* take out of reset */ cdns_dp_phy_write_field(cdns_phy, PHY_RESET, 8, 1, 1); - cdns_torrent_dp_wait_pma_cmn_ready(cdns_phy); - cdns_torrent_dp_run(cdns_phy); + ret = cdns_torrent_dp_wait_pma_cmn_ready(cdns_phy); + if (ret) + return ret; - return 0; + ret = cdns_torrent_dp_run(cdns_phy); + + return ret; } static -void cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy) +int cdns_torrent_dp_wait_pma_cmn_ready(struct cdns_torrent_phy *cdns_phy) { unsigned int reg; int ret; ret = cdns_torrent_dp_read_poll_timeout(cdns_phy, PHY_PMA_CMN_READY, - reg, reg & 1, 0, 500); - if (ret == -ETIMEDOUT) + reg, reg & 1, 0, + POLL_TIMEOUT_US); + if (ret == -ETIMEDOUT) { dev_err(cdns_phy->dev, "timeout waiting for PMA common ready\n"); + return -ETIMEDOUT; + } + + return 0; } static void cdns_torrent_dp_pma_cfg(struct cdns_torrent_phy *cdns_phy) @@ -397,12 +417,73 @@ static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy, (XCVR_DIAG_HSCLK_SEL | lane_bits), 0x0000); } -static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy) +static int cdns_torrent_dp_set_power_state(struct cdns_torrent_phy *cdns_phy, + u32 num_lanes, + enum phy_powerstate powerstate) +{ + /* Register value for power state for a single byte. */ + u32 value_part; + u32 value; + u32 mask; + u32 read_val; + u32 ret; + + switch (powerstate) { + case (POWERSTATE_A0): + value_part = 0x01U; + break; + case (POWERSTATE_A2): + value_part = 0x04U; + break; + default: + /* Powerstate A3 */ + value_part = 0x08U; + break; + } + + /* Select values of registers and mask, depending on enabled + * lane count. + */ + switch (num_lanes) { + /* lane 0 */ + case (1): + value = value_part; + mask = 0x0000003FU; + break; + /* lanes 0-1 */ + case (2): + value = (value_part + | (value_part << 8)); + mask = 0x00003F3FU; + break; + /* lanes 0-3, all */ + default: + value = (value_part + | (value_part << 8) + | (value_part << 16) + | (value_part << 24)); + mask = 0x3F3F3F3FU; + break; + } + + /* Set power state A. */ + cdns_torrent_dp_write(cdns_phy, PHY_PMA_XCVR_POWER_STATE_REQ, value); + /* Wait, until PHY acknowledges power state completion. */ + ret = cdns_torrent_dp_read_poll_timeout(cdns_phy, + PHY_PMA_XCVR_POWER_STATE_ACK, + read_val, + (read_val & mask) == value, 0, + POLL_TIMEOUT_US); + cdns_torrent_dp_write(cdns_phy, + PHY_PMA_XCVR_POWER_STATE_REQ, 0x00000000); + ndelay(100); + + return ret; +} + +static int cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy) { unsigned int read_val; - u32 write_val1 = 0; - u32 write_val2 = 0; - u32 mask = 0; int ret; /* @@ -413,60 +494,23 @@ static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy) PHY_PMA_XCVR_PLLCLK_EN_ACK, read_val, read_val & 1, 0, POLL_TIMEOUT_US); - if (ret == -ETIMEDOUT) + if (ret == -ETIMEDOUT) { dev_err(cdns_phy->dev, "timeout waiting for link PLL clock enable ack\n"); - - ndelay(100); - - switch (cdns_phy->num_lanes) { - case 1: /* lane 0 */ - write_val1 = 0x00000004; - write_val2 = 0x00000001; - mask = 0x0000003f; - break; - case 2: /* lane 0-1 */ - write_val1 = 0x00000404; - write_val2 = 0x00000101; - mask = 0x00003f3f; - break; - case 4: /* lane 0-3 */ - write_val1 = 0x04040404; - write_val2 = 0x01010101; - mask = 0x3f3f3f3f; - break; + return ret; } - cdns_torrent_dp_write(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_REQ, write_val1); - - ret = cdns_torrent_dp_read_poll_timeout(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_ACK, - read_val, - (read_val & mask) == write_val1, - 0, POLL_TIMEOUT_US); - - if (ret == -ETIMEDOUT) - dev_err(cdns_phy->dev, - "timeout waiting for link power state ack\n"); - - cdns_torrent_dp_write(cdns_phy, PHY_PMA_XCVR_POWER_STATE_REQ, 0); ndelay(100); - cdns_torrent_dp_write(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_REQ, write_val2); + ret = cdns_torrent_dp_set_power_state(cdns_phy, cdns_phy->num_lanes, + POWERSTATE_A2); + if (ret) + return ret; - ret = cdns_torrent_dp_read_poll_timeout(cdns_phy, - PHY_PMA_XCVR_POWER_STATE_ACK, - read_val, - (read_val & mask) == write_val2, - 0, POLL_TIMEOUT_US); - if (ret == -ETIMEDOUT) - dev_err(cdns_phy->dev, - "timeout waiting for link power state ack\n"); + ret = cdns_torrent_dp_set_power_state(cdns_phy, cdns_phy->num_lanes, + POWERSTATE_A0); - cdns_torrent_dp_write(cdns_phy, PHY_PMA_XCVR_POWER_STATE_REQ, 0); - ndelay(100); + return ret; } static void cdns_dp_phy_write_field(struct cdns_torrent_phy *cdns_phy, -- 2.4.5