From: Thierry Reding <thierry.reding@gmail.com>
To: Vinod Koul <vkoul@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kishon Vijay Abraham I <kishon@ti.com>,
Mathias Nyman <mathias.nyman@intel.com>,
JC Kuo <jckuo@nvidia.com>, Jon Hunter <jonathanh@nvidia.com>,
linux-tegra@vger.kernel.org, linux-phy@lists.infradead.org,
linux-usb@vger.kernel.org
Subject: [PATCH v8 06/13] phy: tegra: xusb: Add sleepwalk and suspend/resume
Date: Thu, 25 Mar 2021 17:40:50 +0100 [thread overview]
Message-ID: <20210325164057.793954-7-thierry.reding@gmail.com> (raw)
In-Reply-To: <20210325164057.793954-1-thierry.reding@gmail.com>
From: JC Kuo <jckuo@nvidia.com>
This commit adds sleepwalk/wake and suspend/resume interfaces
to Tegra XUSB PHY driver.
Tegra XUSB host controller driver makes use of sleepwalk functions
to enable/disable sleepwalk circuit which is in always-on partition
and can respond to USB resume signals when controller is not powered.
Sleepwalk can be enabled/disabled for any USB UPHY individually.
- tegra_xusb_padctl_enable_phy_sleepwalk()
- tegra_xusb_padctl_disable_phy_sleepwalk()
Tegra XUSB host controller driver makes use of wake functions to
enable/disable/query wake circuit which is in always-on partition
can wake system up when USB resume happens.
Wake circuit can be enabled/disabled for any USB PHY individually.
- tegra_xusb_padctl_enable_phy_wake()
- tegra_xusb_padctl_disable_phy_wake()
- tegra_xusb_padctl_remote_wake_detected()
This commit also adds two system suspend stubs that can be used to
save and restore XUSB PADCTL context during system suspend and
resume.
- tegra_xusb_padctl_suspend_noirq()
- tegra_xusb_padctl_resume_noirq()
Signed-off-by: JC Kuo <jckuo@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
drivers/phy/tegra/xusb.c | 82 ++++++++++++++++++++++++++++++++++
drivers/phy/tegra/xusb.h | 8 ++++
include/linux/phy/tegra/xusb.h | 10 ++++-
3 files changed, 99 insertions(+), 1 deletion(-)
diff --git a/drivers/phy/tegra/xusb.c b/drivers/phy/tegra/xusb.c
index a34d304677bb..0aadac678191 100644
--- a/drivers/phy/tegra/xusb.c
+++ b/drivers/phy/tegra/xusb.c
@@ -1273,10 +1273,36 @@ static int tegra_xusb_padctl_remove(struct platform_device *pdev)
return err;
}
+static int tegra_xusb_padctl_suspend_noirq(struct device *dev)
+{
+ struct tegra_xusb_padctl *padctl = dev_get_drvdata(dev);
+
+ if (padctl->soc && padctl->soc->ops && padctl->soc->ops->suspend_noirq)
+ return padctl->soc->ops->suspend_noirq(padctl);
+
+ return 0;
+}
+
+static int tegra_xusb_padctl_resume_noirq(struct device *dev)
+{
+ struct tegra_xusb_padctl *padctl = dev_get_drvdata(dev);
+
+ if (padctl->soc && padctl->soc->ops && padctl->soc->ops->resume_noirq)
+ return padctl->soc->ops->resume_noirq(padctl);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tegra_xusb_padctl_pm_ops = {
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(tegra_xusb_padctl_suspend_noirq,
+ tegra_xusb_padctl_resume_noirq)
+};
+
static struct platform_driver tegra_xusb_padctl_driver = {
.driver = {
.name = "tegra-xusb-padctl",
.of_match_table = tegra_xusb_padctl_of_match,
+ .pm = &tegra_xusb_padctl_pm_ops,
},
.probe = tegra_xusb_padctl_probe,
.remove = tegra_xusb_padctl_remove,
@@ -1343,6 +1369,62 @@ int tegra_xusb_padctl_hsic_set_idle(struct tegra_xusb_padctl *padctl,
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_hsic_set_idle);
+int tegra_xusb_padctl_enable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy,
+ enum usb_device_speed speed)
+{
+ struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+ if (lane->pad->ops->enable_phy_sleepwalk)
+ return lane->pad->ops->enable_phy_sleepwalk(lane, speed);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_enable_phy_sleepwalk);
+
+int tegra_xusb_padctl_disable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy)
+{
+ struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+ if (lane->pad->ops->disable_phy_sleepwalk)
+ return lane->pad->ops->disable_phy_sleepwalk(lane);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_disable_phy_sleepwalk);
+
+int tegra_xusb_padctl_enable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy)
+{
+ struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+ if (lane->pad->ops->enable_phy_wake)
+ return lane->pad->ops->enable_phy_wake(lane);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_enable_phy_wake);
+
+int tegra_xusb_padctl_disable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy)
+{
+ struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+ if (lane->pad->ops->disable_phy_wake)
+ return lane->pad->ops->disable_phy_wake(lane);
+
+ return -EOPNOTSUPP;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_disable_phy_wake);
+
+bool tegra_xusb_padctl_remote_wake_detected(struct tegra_xusb_padctl *padctl, struct phy *phy)
+{
+ struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
+
+ if (lane->pad->ops->remote_wake_detected)
+ return lane->pad->ops->remote_wake_detected(lane);
+
+ return false;
+}
+EXPORT_SYMBOL_GPL(tegra_xusb_padctl_remote_wake_detected);
+
int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
unsigned int port, bool enable)
{
diff --git a/drivers/phy/tegra/xusb.h b/drivers/phy/tegra/xusb.h
index e789d5ff4eb8..034f7a2c28d6 100644
--- a/drivers/phy/tegra/xusb.h
+++ b/drivers/phy/tegra/xusb.h
@@ -11,6 +11,7 @@
#include <linux/mutex.h>
#include <linux/workqueue.h>
+#include <linux/usb/ch9.h>
#include <linux/usb/otg.h>
#include <linux/usb/role.h>
@@ -132,6 +133,11 @@ struct tegra_xusb_lane_ops {
void (*remove)(struct tegra_xusb_lane *lane);
void (*iddq_enable)(struct tegra_xusb_lane *lane);
void (*iddq_disable)(struct tegra_xusb_lane *lane);
+ int (*enable_phy_sleepwalk)(struct tegra_xusb_lane *lane, enum usb_device_speed speed);
+ int (*disable_phy_sleepwalk)(struct tegra_xusb_lane *lane);
+ int (*enable_phy_wake)(struct tegra_xusb_lane *lane);
+ int (*disable_phy_wake)(struct tegra_xusb_lane *lane);
+ bool (*remote_wake_detected)(struct tegra_xusb_lane *lane);
};
bool tegra_xusb_lane_check(struct tegra_xusb_lane *lane, const char *function);
@@ -396,6 +402,8 @@ struct tegra_xusb_padctl_ops {
const struct tegra_xusb_padctl_soc *soc);
void (*remove)(struct tegra_xusb_padctl *padctl);
+ int (*suspend_noirq)(struct tegra_xusb_padctl *padctl);
+ int (*resume_noirq)(struct tegra_xusb_padctl *padctl);
int (*usb3_save_context)(struct tegra_xusb_padctl *padctl,
unsigned int index);
int (*hsic_set_idle)(struct tegra_xusb_padctl *padctl,
diff --git a/include/linux/phy/tegra/xusb.h b/include/linux/phy/tegra/xusb.h
index 71d956935405..3a35e74cdc61 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, NVIDIA CORPORATION. All rights reserved.
+ * Copyright (c) 2016-2020, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef PHY_TEGRA_XUSB_H
@@ -8,6 +8,7 @@
struct tegra_xusb_padctl;
struct device;
+enum usb_device_speed;
struct tegra_xusb_padctl *tegra_xusb_padctl_get(struct device *dev);
void tegra_xusb_padctl_put(struct tegra_xusb_padctl *padctl);
@@ -23,4 +24,11 @@ int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl,
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);
+int tegra_xusb_padctl_enable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy,
+ enum usb_device_speed speed);
+int tegra_xusb_padctl_disable_phy_sleepwalk(struct tegra_xusb_padctl *padctl, struct phy *phy);
+int tegra_xusb_padctl_enable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy);
+int tegra_xusb_padctl_disable_phy_wake(struct tegra_xusb_padctl *padctl, struct phy *phy);
+bool tegra_xusb_padctl_remote_wake_detected(struct tegra_xusb_padctl *padctl, struct phy *phy);
+
#endif /* PHY_TEGRA_XUSB_H */
--
2.30.2
next prev parent reply other threads:[~2021-03-25 16:41 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 16:40 [PATCH v8 00/13] Tegra XHCI controller ELPG support Thierry Reding
2021-03-25 16:40 ` [PATCH v8 01/13] clk: tegra: Add PLLE HW power sequencer control Thierry Reding
2021-03-25 16:40 ` [PATCH v8 02/13] clk: tegra: Don't enable PLLE HW sequencer at init Thierry Reding
2021-03-25 16:40 ` [PATCH v8 03/13] phy: tegra: xusb: Move usb3 port init for Tegra210 Thierry Reding
2021-03-30 14:12 ` Vinod Koul
2021-03-31 16:32 ` Thierry Reding
2021-04-01 5:15 ` Vinod Koul
2021-03-25 16:40 ` [PATCH v8 04/13] phy: tegra: xusb: Rearrange UPHY init on Tegra210 Thierry Reding
2021-03-30 14:20 ` Vinod Koul
2021-03-25 16:40 ` [PATCH v8 05/13] phy: tegra: xusb: Add Tegra210 lane_iddq operation Thierry Reding
2021-03-30 14:21 ` Vinod Koul
2021-03-31 16:36 ` Thierry Reding
2021-03-25 16:40 ` Thierry Reding [this message]
2021-03-30 14:23 ` [PATCH v8 06/13] phy: tegra: xusb: Add sleepwalk and suspend/resume Vinod Koul
2021-03-31 16:38 ` Thierry Reding
2021-03-31 16:45 ` Thierry Reding
2021-03-31 16:52 ` Thierry Reding
2021-03-25 16:40 ` [PATCH v8 07/13] soc/tegra: pmc: Provide USB sleepwalk register map Thierry Reding
2021-03-25 16:40 ` [PATCH v8 08/13] dt-bindings: phy: tegra-xusb: Add nvidia,pmc prop Thierry Reding
2021-03-25 16:40 ` [PATCH v8 09/13] phy: tegra: xusb: Add wake/sleepwalk for Tegra210 Thierry Reding
2021-03-25 20:26 ` Nathan Chancellor
2021-03-26 12:44 ` Thierry Reding
2021-04-01 6:45 ` Vinod Koul
2021-04-01 10:44 ` Thierry Reding
2021-03-25 16:40 ` [PATCH v8 10/13] phy: tegra: xusb: Tegra210 host mode VBUS control Thierry Reding
2021-04-01 6:45 ` Vinod Koul
2021-03-25 16:40 ` [PATCH v8 11/13] phy: tegra: xusb: Add wake/sleepwalk for Tegra186 Thierry Reding
2021-04-01 6:49 ` Vinod Koul
2021-04-01 11:00 ` Thierry Reding
2021-03-25 16:40 ` [PATCH v8 12/13] usb: host: xhci-tegra: Unlink power domain devices Thierry Reding
2021-03-25 16:40 ` [PATCH v8 13/13] xhci: tegra: Enable ELPG for runtime/system PM Thierry Reding
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