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Wed, 17 Mar 2021 17:10:08 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 311F910002A; Wed, 17 Mar 2021 17:10:08 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 2173B23E915; Wed, 17 Mar 2021 17:10:08 +0100 (CET) Received: from localhost (10.75.127.46) by SFHDAG2NODE2.st.com (10.75.127.5) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 17 Mar 2021 17:10:07 +0100 From: Amelie Delaunay To: Kishon Vijay Abraham I , Vinod Koul , Rob Herring , Alexandre Torgue , Maxime Coquelin CC: , , , , , Amelie Delaunay Subject: [PATCH 2/2] phy: stm32: manage optional vbus regulator on phy_power_on/off Date: Wed, 17 Mar 2021 17:09:54 +0100 Message-ID: <20210317160954.15487-3-amelie.delaunay@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210317160954.15487-1-amelie.delaunay@foss.st.com> References: <20210317160954.15487-1-amelie.delaunay@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG3NODE1.st.com (10.75.127.7) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369, 18.0.761 definitions=2021-03-17_10:2021-03-17, 2021-03-17 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210317_161014_586759_17208FAE X-CRM114-Status: GOOD ( 17.37 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This patch adds support for optional vbus regulator. It is managed on phy_power_on/off calls and may be needed for host mode. Signed-off-by: Amelie Delaunay --- drivers/phy/st/phy-stm32-usbphyc.c | 31 ++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/phy/st/phy-stm32-usbphyc.c b/drivers/phy/st/phy-stm32-usbphyc.c index c184f4e34584..3e491dfb2525 100644 --- a/drivers/phy/st/phy-stm32-usbphyc.c +++ b/drivers/phy/st/phy-stm32-usbphyc.c @@ -57,6 +57,7 @@ struct pll_params { struct stm32_usbphyc_phy { struct phy *phy; struct stm32_usbphyc *usbphyc; + struct regulator *vbus; u32 index; bool active; }; @@ -291,9 +292,31 @@ static int stm32_usbphyc_phy_exit(struct phy *phy) return stm32_usbphyc_pll_disable(usbphyc); } +static int stm32_usbphyc_phy_power_on(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + if (usbphyc_phy->vbus) + return regulator_enable(usbphyc_phy->vbus); + + return 0; +} + +static int stm32_usbphyc_phy_power_off(struct phy *phy) +{ + struct stm32_usbphyc_phy *usbphyc_phy = phy_get_drvdata(phy); + + if (usbphyc_phy->vbus) + return regulator_disable(usbphyc_phy->vbus); + + return 0; +} + static const struct phy_ops stm32_usbphyc_phy_ops = { .init = stm32_usbphyc_phy_init, .exit = stm32_usbphyc_phy_exit, + .power_on = stm32_usbphyc_phy_power_on, + .power_off = stm32_usbphyc_phy_power_off, .owner = THIS_MODULE, }; @@ -519,6 +542,14 @@ static int stm32_usbphyc_probe(struct platform_device *pdev) usbphyc->phys[port]->index = index; usbphyc->phys[port]->active = false; + usbphyc->phys[port]->vbus = devm_regulator_get_optional(&phy->dev, "vbus"); + if (IS_ERR(usbphyc->phys[port]->vbus)) { + ret = PTR_ERR(usbphyc->phys[port]->vbus); + if (ret == -EPROBE_DEFER) + goto put_child; + usbphyc->phys[port]->vbus = NULL; + } + port++; }