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Sat, 23 May 2020 23:22:54 +0000 From: Peter Chen To: balbi@kernel.org, mathias.nyman@intel.com Cc: linux-usb@vger.kernel.org, linux-imx@nxp.com, pawell@cadence.com, rogerq@ti.com, gregkh@linuxfoundation.org, jun.li@nxp.com, Peter Chen Subject: [PATCH v2 1/9] usb: cdns3: introduce cdns3_set_phy_power API Date: Sun, 24 May 2020 07:22:56 +0800 Message-Id: <20200523232304.23976-2-peter.chen@nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200523232304.23976-1-peter.chen@nxp.com> References: <20200523232304.23976-1-peter.chen@nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR04CA0153.apcprd04.prod.outlook.com (2603:1096:4::15) To AM7PR04MB7157.eurprd04.prod.outlook.com (2603:10a6:20b:118::20) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from b29397-desktop.ap.freescale.net (119.31.174.66) by SG2PR04CA0153.apcprd04.prod.outlook.com (2603:1096:4::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.23 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: RHjJ9xOGv8IAirllFrS4MDnvhamh6klw4yPXL4mIx9NDqASMf3dCZcQVAYVx3yskZLIOajHGGZh7XkEn1UC9F40RE4VHHpkw59Dj0R0b35hlNtuiUOGF6+7g65bfC0kCSQ24l5jgfDHxZWPNyy73JIqFc2G2TRf7S3vQHiy4I/Nlk+UtdznYm5gvHJmZyKWi91zOyqAs/GXCffhKmzZimCBR+SAtttr7PTq8inoks6ZEAnDCLZxm9QMg5eKPcudZyG6Y6blevXyH262JhaQykqGJvoU+k1Znawzqa9jT/qu1H4Jol+bMI2MwD+kDkZlxR18oSxkOspB8x+zyNhnjRgl/u5QCOueBHc4G1ou+mPywYn4y11uiuUx2PmVFeVx1zS/561XgCshOxXBvh1NRMD5S4BblPG7sL3c0e51tkVC4mwuqQc7FeayEzEZy/IOiwscOSoYKoepTWucgKOmGjzBoYNu7aomFD4EmL3YC2ZQ= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: e74fc0a4-3927-4a84-dd3b-08d7ff703891 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 May 2020 23:22:54.8888 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Nzob9tai4EX7v/vQQkzWmrWdV7YHOhRmrMdnyouBhFZBW/X6tdIAZ4U/IDHnPfrl57LJIzpNy6lx7iSd7SrA7A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB6918 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Since we have both USB2 and USB3 PHYs for cdns3 controller, it is better we have a unity API to handle both USB2 and USB3's power, it could simplify code for error handling and further power management implementation. Signed-off-by: Peter Chen --- drivers/usb/cdns3/core.c | 44 ++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 15 deletions(-) diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c index 19bbb5b7e6b6..bfd09aa98c12 100644 --- a/drivers/usb/cdns3/core.c +++ b/drivers/usb/cdns3/core.c @@ -384,6 +384,28 @@ static int cdns3_role_set(struct usb_role_switch *sw, enum usb_role role) return ret; } +static int cdns3_set_phy_power(struct cdns3 *cdns, bool on) +{ + int ret = 0; + + if (on) { + ret = phy_power_on(cdns->usb2_phy); + if (ret) + return ret; + + ret = phy_power_on(cdns->usb3_phy); + if (ret) { + phy_power_off(cdns->usb2_phy); + return ret; + } + } else { + phy_power_off(cdns->usb3_phy); + phy_power_off(cdns->usb2_phy); + } + + return 0; +} + /** * cdns3_probe - probe for cdns3 core device * @pdev: Pointer to cdns3 core platform device @@ -477,14 +499,10 @@ static int cdns3_probe(struct platform_device *pdev) if (ret) goto err1; - ret = phy_power_on(cdns->usb2_phy); + ret = cdns3_set_phy_power(cdns, true); if (ret) goto err2; - ret = phy_power_on(cdns->usb3_phy); - if (ret) - goto err3; - sw_desc.set = cdns3_role_set; sw_desc.get = cdns3_role_get; sw_desc.allow_userspace_control = true; @@ -496,16 +514,16 @@ static int cdns3_probe(struct platform_device *pdev) if (IS_ERR(cdns->role_sw)) { ret = PTR_ERR(cdns->role_sw); dev_warn(dev, "Unable to register Role Switch\n"); - goto err4; + goto err3; } ret = cdns3_drd_init(cdns); if (ret) - goto err5; + goto err4; ret = cdns3_core_init_role(cdns); if (ret) - goto err5; + goto err4; device_set_wakeup_capable(dev, true); pm_runtime_set_active(dev); @@ -522,14 +540,11 @@ static int cdns3_probe(struct platform_device *pdev) dev_dbg(dev, "Cadence USB3 core: probe succeed\n"); return 0; -err5: +err4: cdns3_drd_exit(cdns); usb_role_switch_unregister(cdns->role_sw); -err4: - phy_power_off(cdns->usb3_phy); - err3: - phy_power_off(cdns->usb2_phy); + cdns3_set_phy_power(cdns, false); err2: phy_exit(cdns->usb3_phy); err1: @@ -553,8 +568,7 @@ static int cdns3_remove(struct platform_device *pdev) pm_runtime_put_noidle(&pdev->dev); cdns3_exit_roles(cdns); usb_role_switch_unregister(cdns->role_sw); - phy_power_off(cdns->usb2_phy); - phy_power_off(cdns->usb3_phy); + cdns3_set_phy_power(cdns, false); phy_exit(cdns->usb2_phy); phy_exit(cdns->usb3_phy); return 0; -- 2.17.1