user/sven/linux.git/drivers/phy/tegra, branch v5.15.161

phy: tegra: xusb: Add API to retrieve the port number of phy

2024-04-10T14:18:40Z

[ Upstream commit d843f031d9e90462253015bc0bd9e3852d206bf2 ] This patch introduces a new API, tegra_xusb_padctl_get_port_number, to the Tegra XUSB Pad Controller driver. This API is used to identify the USB port that is associated with a given PHY. The function takes a PHY pointer for either a USB2 PHY or USB3 PHY as input and returns the corresponding port number. If the PHY pointer is invalid, it returns -ENODEV. Cc: stable@vger.kernel.org Signed-off-by: Wayne Chang Reviewed-by: Jon Hunter Tested-by: Jon Hunter Link: https://lore.kernel.org/r/20240307030328.1487748-2-waynec@nvidia.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

phy: tegra: xusb: check return value of devm_kzalloc()

2023-07-23T11:47:26Z

[ Upstream commit 44faada0f38fc333d392af04c343b0e23f8f5d81 ] devm_kzalloc() returns a pointer to dynamically allocated memory. Pointer could be NULL in case allocation fails. Check pointer validity. Identified with coccinelle (kmerr.cocci script). Fixes: f67213cee2b3 ("phy: tegra: xusb: Add usb-role-switch support") Signed-off-by: Claudiu Beznea Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20230531073950.145339-1-claudiu.beznea@microchip.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

phy: tegra: xusb: Clear the driver reference in usb-phy dev

2023-07-23T11:47:18Z

commit c0c2fcb1325d0d4f3b322b5ee49385f8eca2560d upstream. For the dual-role port, it will assign the phy dev to usb-phy dev and use the port dev driver as the dev driver of usb-phy. When we try to destroy the port dev, it will destroy its dev driver as well. But we did not remove the reference from usb-phy dev. This might cause the use-after-free issue in KASAN. Fixes: e8f7d2f409a1 ("phy: tegra: xusb: Add usb-phy support") Cc: stable@vger.kernel.org Signed-off-by: EJ Hsu Signed-off-by: Haotien Hsu Acked-by: Thierry Reding Acked-by: Jon Hunter Link: https://lore.kernel.org/r/20230609062932.3276509-1-haotienh@nvidia.com Signed-off-by: Vinod Koul Signed-off-by: Greg Kroah-Hartman

phy: tegra: xusb: Add missing tegra_xusb_port_unregister for usb2_port and ulpi_port

2023-05-11T14:00:38Z

[ Upstream commit e024854048e733391b31fe5a398704b31b9af803 ] The tegra_xusb_port_unregister should be called when usb2_port and ulpi_port map fails in tegra_xusb_add_usb2_port() or in tegra_xusb_add_ulpi_port(), fix it. Fixes: 53d2a715c240 ("phy: Add Tegra XUSB pad controller support") Signed-off-by: Gaosheng Cui Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20221129111634.1547747-1-cuigaosheng1@huawei.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin

phy: tegra: xusb: mark PM functions as __maybe_unused

2021-07-22T09:11:07Z

When these are not referenced, gcc prints a harmless warning: drivers/phy/tegra/xusb.c:1286:12: error: 'tegra_xusb_padctl_resume_noirq' defined but not used [-Werror=unused-function] 1286 | static int tegra_xusb_padctl_resume_noirq(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/phy/tegra/xusb.c:1276:12: error: 'tegra_xusb_padctl_suspend_noirq' defined but not used [-Werror=unused-function] 1276 | static int tegra_xusb_padctl_suspend_noirq(struct device *dev) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fixes: c545a9056712 ("phy: tegra: xusb: Add sleepwalk and suspend/resume") Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20210721152550.2976003-1-arnd@kernel.org Signed-off-by: Vinod Koul

phy: tegra: xusb: Add wake/sleepwalk for Tegra186

2021-06-03T12:52:45Z

This commit implements Tegra186/Tegra194 XUSB PADCTL/AO wake and sleepwalk operations. Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding

phy: tegra: xusb: Tegra210 host mode VBUS control

2021-06-03T12:52:45Z

To support XUSB host controller ELPG, this commit moves VBUS control .phy_power_on()/.phy_power_off() to .phy_init()/.phy_exit(). When XUSB host controller enters ELPG, host driver invokes .phy_power_off(), VBUS should remain ON so that USB devices will not disconnect. VBUS can be turned OFF when host driver invokes .phy_exit() which indicates disabling a USB port. Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding

phy: tegra: xusb: Add wake/sleepwalk for Tegra210

2021-06-03T12:52:40Z

This commit implements Tegra210 XUSB PADCTL wake and sleepwalk routines. Sleepwalk logic is in PMC (always-on) hardware block. PMC driver provides managed access to the sleepwalk registers via regmap framework. Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding

phy: tegra: xusb: Add sleepwalk and suspend/resume

2021-06-03T12:49:34Z

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 Acked-By: Vinod Koul Signed-off-by: Thierry Reding

phy: tegra: xusb: Add Tegra210 lane_iddq operation

2021-06-03T12:49:33Z

As per Tegra210 TRM, before changing lane assignments, driver should keep lanes in IDDQ and sleep state; after changing lane assignments, driver should bring lanes out of IDDQ. This commit implements the required operations. Signed-off-by: JC Kuo Acked-By: Vinod Koul Signed-off-by: Thierry Reding