From patchwork Wed Sep 4 08:23:55 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nagarjuna Kristam X-Patchwork-Id: 11129589 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B7A1D112C for ; Wed, 4 Sep 2019 08:24:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90F7822DBF for ; Wed, 4 Sep 2019 08:24:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="Rpzd8n6q" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729269AbfIDIYa (ORCPT ); Wed, 4 Sep 2019 04:24:30 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:12935 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726010AbfIDIYa (ORCPT ); Wed, 4 Sep 2019 04:24:30 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 04 Sep 2019 01:24:29 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 04 Sep 2019 01:24:28 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 04 Sep 2019 01:24:28 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 4 Sep 2019 08:24:27 +0000 Received: from hqnvemgw02.nvidia.com (172.16.227.111) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 4 Sep 2019 08:24:27 +0000 Received: from nkristam-ubuntu.nvidia.com (Not Verified[10.19.65.118]) by hqnvemgw02.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 04 Sep 2019 01:24:27 -0700 From: Nagarjuna Kristam To: , , , , , , CC: , , , , Nagarjuna Kristam Subject: [Patch V8 3/8] phy: tegra: xusb: Add vbus override support on Tegra210 Date: Wed, 4 Sep 2019 13:53:55 +0530 Message-ID: <1567585440-13751-4-git-send-email-nkristam@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1567585440-13751-1-git-send-email-nkristam@nvidia.com> References: <1567585440-13751-1-git-send-email-nkristam@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1567585469; bh=p5G3fjit4Pj8OV8Rarlv5W14hIojRuLLpJdCzYAO82g=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=Rpzd8n6q34R4FuIzq0ECtnrgd7DJP3iHQr6ruzz/ivobMoVw8WsS6mkfP+cCbY3qp LcvApXE/Y/biU103ZYc0X0OxHXfH0eQ0i/WiQOK4JUh8dBin4K7Cx3ImadOlgsyW+Q RIitW4E8A5ohfFAozHIquTGI+3ZYWEmCTBiC+pudZWj1Z0rtwqzQP2n8b8NMzQIUYN SzqWA439mPmxq55hjeqNovYKmLQbBgyLnG/hQ9A8Dbl0dIiBpmdHBGCbaiPsNbtqqm YZpIdtKJuXUaQOgulHq9QyeTPq5uhekZYSR7avffpm4g+2V28XjEitgWm8Cb21PZzC 2mE6/BYZICVJA== Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Tegra XUSB device control driver needs to control vbus override during its operations, add API for the support. Signed-off-by: Nagarjuna Kristam Acked-by: Thierry Reding --- drivers/phy/tegra/xusb-tegra210.c | 57 +++++++++++++++++++++++++++++++++++++++ drivers/phy/tegra/xusb.c | 22 +++++++++++++++ drivers/phy/tegra/xusb.h | 2 ++ include/linux/phy/tegra/xusb.h | 4 ++- 4 files changed, 84 insertions(+), 1 deletion(-) diff --git a/drivers/phy/tegra/xusb-tegra210.c b/drivers/phy/tegra/xusb-tegra210.c index 8c31f03..9e6f14b 100644 --- a/drivers/phy/tegra/xusb-tegra210.c +++ b/drivers/phy/tegra/xusb-tegra210.c @@ -65,6 +65,10 @@ #define XUSB_PADCTL_USB3_PAD_MUX_PCIE_IDDQ_DISABLE(x) (1 << (1 + (x))) #define XUSB_PADCTL_USB3_PAD_MUX_SATA_IDDQ_DISABLE(x) (1 << (8 + (x))) +#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL0(x) (0x080 + (x) * 0x40) +#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIP (1 << 18) +#define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIN (1 << 22) + #define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL1(x) (0x084 + (x) * 0x40) #define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_SHIFT 7 #define XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL1_VREG_LEV_MASK 0x3 @@ -227,6 +231,12 @@ #define XUSB_PADCTL_UPHY_USB3_PADX_ECTL6(x) (0xa74 + (x) * 0x40) #define XUSB_PADCTL_UPHY_USB3_PAD_ECTL6_RX_EQ_CTRL_H_VAL 0xfcf01368 +#define XUSB_PADCTL_USB2_VBUS_ID 0xc60 +#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON (1 << 14) +#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT 18 +#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK 0xf +#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING 8 + struct tegra210_xusb_fuse_calibration { u32 hs_curr_level[4]; u32 hs_term_range_adj; @@ -2016,6 +2026,51 @@ static const struct tegra_xusb_port_ops tegra210_usb3_port_ops = { .map = tegra210_usb3_port_map, }; +static int tegra210_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl, + bool status) +{ + u32 value; + + dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear"); + + value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID); + + if (status) { + value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON; + value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK << + XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT); + value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING << + XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT; + } else + value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON; + + padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID); + + return 0; +} + +static int tegra210_utmi_port_reset(struct phy *phy) +{ + struct tegra_xusb_padctl *padctl; + struct tegra_xusb_lane *lane; + u32 value; + + lane = phy_get_drvdata(phy); + padctl = lane->pad->padctl; + + value = padctl_readl(padctl, + XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL0(lane->index)); + + if ((value & XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIP) || + (value & XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPAD_CTL0_ZIN)) { + tegra210_xusb_padctl_vbus_override(padctl, false); + tegra210_xusb_padctl_vbus_override(padctl, true); + return 1; + } + + return 0; +} + static int tegra210_xusb_read_fuse_calibration(struct tegra210_xusb_fuse_calibration *fuse) { @@ -2078,6 +2133,8 @@ static const struct tegra_xusb_padctl_ops tegra210_xusb_padctl_ops = { .remove = tegra210_xusb_padctl_remove, .usb3_set_lfps_detect = tegra210_usb3_set_lfps_detect, .hsic_set_idle = tegra210_hsic_set_idle, + .vbus_override = tegra210_xusb_padctl_vbus_override, + .utmi_port_reset = tegra210_utmi_port_reset, }; static const char * const tegra210_xusb_padctl_supply_names[] = { diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c index b4b217e..bf4b008 100644 --- a/drivers/phy/tegra/xusb.c +++ b/drivers/phy/tegra/xusb.c @@ -1121,6 +1121,28 @@ int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl, } EXPORT_SYMBOL_GPL(tegra_xusb_padctl_usb3_set_lfps_detect); +int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl, + bool val) +{ + if (padctl->soc->ops->vbus_override) + return padctl->soc->ops->vbus_override(padctl, val); + + return -ENOTSUPP; +} +EXPORT_SYMBOL_GPL(tegra_xusb_padctl_set_vbus_override); + +int tegra_phy_xusb_utmi_port_reset(struct phy *phy) +{ + struct tegra_xusb_lane *lane = phy_get_drvdata(phy); + struct tegra_xusb_padctl *padctl = lane->pad->padctl; + + if (padctl->soc->ops->utmi_port_reset) + return padctl->soc->ops->utmi_port_reset(phy); + + return -ENOTSUPP; +} +EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_port_reset); + MODULE_AUTHOR("Thierry Reding "); MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h index bd91832..da94fcc 100644 --- a/drivers/phy/tegra/xusb.h +++ b/drivers/phy/tegra/xusb.h @@ -373,6 +373,8 @@ struct tegra_xusb_padctl_ops { unsigned int index, bool idle); int (*usb3_set_lfps_detect)(struct tegra_xusb_padctl *padctl, unsigned int index, bool enable); + int (*vbus_override)(struct tegra_xusb_padctl *padctl, bool set); + int (*utmi_port_reset)(struct phy *phy); }; struct tegra_xusb_padctl_soc { diff --git a/include/linux/phy/tegra/xusb.h b/include/linux/phy/tegra/xusb.h index ee59562..1235865 100644 --- a/include/linux/phy/tegra/xusb.h +++ b/include/linux/phy/tegra/xusb.h @@ -18,5 +18,7 @@ int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl, unsigned int port, bool idle); int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl, unsigned int port, bool enable); - +int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl, + bool val); +int tegra_phy_xusb_utmi_port_reset(struct phy *phy); #endif /* PHY_TEGRA_XUSB_H */