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Date: Tue, 16 Aug 2022 16:23:52 +0800
From: Jim Lin <jilin@...dia.com>
To: <jckuo@...dia.com>, <thierry.reding@...il.com>,
<jonathanh@...dia.com>
CC: <vkoul@...nel.org>, <balbi@...nel.org>,
<gregkh@...uxfoundation.org>, <jilin@...dia.com>,
<bhsieh@...dia.com>, <linux-phy@...ts.infradead.org>,
<linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-usb@...r.kernel.org>
Subject: [PATCH v2 1/2] phy: tegra: xusb: add utmi pad power on/down ops
Add utmi_pad_power_on/down ops for each SOC instead of exporting
tegra_phy_xusb_utmi_pad_power_on/down directly for Tegra186 chip.
Signed-off-by: BH Hsieh <bhsieh@...dia.com>
Signed-off-by: Jim Lin <jilin@...dia.com>
---
v2: update copyright year
drivers/phy/tegra/xusb-tegra186.c | 19 ++++++++++++-------
drivers/phy/tegra/xusb.c | 22 +++++++++++++++++++++-
drivers/phy/tegra/xusb.h | 4 +++-
include/linux/phy/tegra/xusb.h | 4 +++-
4 files changed, 39 insertions(+), 10 deletions(-)
diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c
index ae3915ed9fef..5abdf81aa143 100644
--- a/drivers/phy/tegra/xusb-tegra186.c
+++ b/drivers/phy/tegra/xusb-tegra186.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/delay.h>
@@ -638,7 +638,7 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl)
mutex_unlock(&padctl->lock);
}
-static void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy)
+static void tegra186_utmi_pad_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
@@ -656,6 +656,8 @@ static void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy)
return;
}
+ dev_dbg(dev, "power on UTMI pad %u\n", index);
+
tegra186_utmi_bias_pad_power_on(padctl);
udelay(2);
@@ -669,7 +671,7 @@ static void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy)
padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
}
-static void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy)
+static void tegra186_utmi_pad_power_down(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
@@ -679,6 +681,8 @@ static void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy)
if (!phy)
return;
+ dev_dbg(padctl->dev, "power down UTMI pad %u\n", index);
+
value = padctl_readl(padctl, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
value |= USB2_OTG_PD;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL0(index));
@@ -849,15 +853,14 @@ static int tegra186_utmi_phy_power_on(struct phy *phy)
value |= RPD_CTRL(priv->calib.rpd_ctrl);
padctl_writel(padctl, value, XUSB_PADCTL_USB2_OTG_PADX_CTL1(index));
- /* TODO: pad power saving */
- tegra_phy_xusb_utmi_pad_power_on(phy);
+ tegra186_utmi_pad_power_on(phy);
+
return 0;
}
static int tegra186_utmi_phy_power_off(struct phy *phy)
{
- /* TODO: pad power saving */
- tegra_phy_xusb_utmi_pad_power_down(phy);
+ tegra186_utmi_pad_power_down(phy);
return 0;
}
@@ -1486,6 +1489,8 @@ static const struct tegra_xusb_padctl_ops tegra186_xusb_padctl_ops = {
.suspend_noirq = tegra186_xusb_padctl_suspend_noirq,
.resume_noirq = tegra186_xusb_padctl_resume_noirq,
.vbus_override = tegra186_xusb_padctl_vbus_override,
+ .utmi_pad_power_on = tegra186_utmi_pad_power_on,
+ .utmi_pad_power_down = tegra186_utmi_pad_power_down,
};
#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index 963de5913e50..49873718d54a 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2014-2022, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/delay.h>
@@ -1458,6 +1458,26 @@ int tegra_phy_xusb_utmi_port_reset(struct phy *phy)
}
EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_port_reset);
+void tegra_phy_xusb_utmi_pad_power_on(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_pad_power_on)
+ padctl->soc->ops->utmi_pad_power_on(phy);
+}
+EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_pad_power_on);
+
+void tegra_phy_xusb_utmi_pad_power_down(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_pad_power_down)
+ padctl->soc->ops->utmi_pad_power_down(phy);
+}
+EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_pad_power_down);
+
int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
unsigned int port)
{
diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h
index 034f7a2c28d6..8cfbbdbd6e0c 100644
--- a/drivers/phy/tegra/xusb.h
+++ b/drivers/phy/tegra/xusb.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2014-2020, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2014-2022, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2015, Google Inc.
*/
@@ -412,6 +412,8 @@ struct tegra_xusb_padctl_ops {
unsigned int index, bool enable);
int (*vbus_override)(struct tegra_xusb_padctl *padctl, bool set);
int (*utmi_port_reset)(struct phy *phy);
+ void (*utmi_pad_power_on)(struct phy *phy);
+ void (*utmi_pad_power_down)(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 3a35e74cdc61..70998e6dd6fd 100644
--- a/include/linux/phy/tegra/xusb.h
+++ b/include/linux/phy/tegra/xusb.h
@@ -1,6 +1,6 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef PHY_TEGRA_XUSB_H
@@ -21,6 +21,8 @@ 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);
+void tegra_phy_xusb_utmi_pad_power_on(struct phy *phy);
+void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy);
int tegra_phy_xusb_utmi_port_reset(struct phy *phy);
int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
unsigned int port);
--
2.17.1
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