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| author | JC Kuo <jckuo@nvidia.com> | 2021-01-20 15:34:06 +0800 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2021-06-03 14:49:34 +0200 |
| commit | c545a90567125b874d817509036ec7d6698097ac (patch) | |
| tree | 188334ab245caaaa3a0e2e08790c0cf629205e6c /drivers/phy/tegra/xusb.h | |
| parent | c339605cb0f6d33c9dc8ca73033c665573149f29 (diff) | |
| download | lwn-c545a90567125b874d817509036ec7d6698097ac.tar.gz lwn-c545a90567125b874d817509036ec7d6698097ac.zip | |
phy: tegra: xusb: Add sleepwalk and suspend/resume
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>
Acked-By: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/phy/tegra/xusb.h')
| -rw-r--r-- | drivers/phy/tegra/xusb.h | 8 |
1 files changed, 8 insertions, 0 deletions
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, |