kernel/drivers/usb/chipidea/ci_hdrc_tegra.c, branch linux-6.9.y

usb: chipidea: tegra: Consistently use dev_err_probe()

2023-10-02T12:10:47Z

Convert all error exits from probe() to dev_err_probe(). Acked-by: Peter Chen Signed-off-by: Michał Mirosław Link: https://lore.kernel.org/r/43d03aad1c394d9995f69d13ca1176f9ff8a8dab.1695934946.git.mirq-linux@rere.qmqm.pl Signed-off-by: Greg Kroah-Hartman

usb: Explicitly include correct DT includes

2023-07-25T16:20:02Z

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Acked-by: Herve Codina Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230718143027.1064731-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: chipidea/ci_hdrc_tegra: Convert to platform remove callback returning void

2023-05-28T11:36:15Z

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230517230239.187727-8-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Add runtime PM and OPP support

2021-12-16T13:05:23Z

The Tegra USB controller belongs to the core power domain and we're going to enable GENPD support for the core domain. Now USB controller must be resumed using runtime PM API in order to initialize the USB power state. We already support runtime PM for the CI device, but CI's PM is separated from the RPM managed by tegra-usb driver. Add runtime PM and OPP support to the driver. Acked-by: Peter Chen Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

usb: chipidea: tegra: Silence deferred probe error

2021-03-23T11:50:32Z

Silence deferred probe error caused by the PHY driver which is probed later than the ChipIdea driver. Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20210314203927.2572-1-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Specify TX FIFO threshold in UDC SoC info

2021-01-13T10:26:34Z

The UDC/OTG controller could be switched to a host mode and the TXFILLTUNING register needs to be programmed properly for the host mode. Hence specify the TX FIFO threshold in the UDC SoC info. Acked-by: Peter Chen Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201218120246.7759-8-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Support runtime PM

2021-01-13T10:26:34Z

Tegra PHY driver now supports waking up controller from a low power mode. Enable runtime PM in order to put controller into the LPM during idle. Tested-by: Matt Merhar Tested-by: Nicolas Chauvet Tested-by: Peter Geis Tested-by: Ion Agorria Acked-by: Peter Chen Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201218120246.7759-7-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Support host mode

2021-01-13T10:26:34Z

Add USB host mode to the Tegra HDRC driver. This allows us to benefit from support provided by the generic ChipIdea driver instead of duplicating the effort in a separate ehci-tegra driver. Tested-by: Matt Merhar Tested-by: Nicolas Chauvet Tested-by: Ion Agorria Acked-by: Thierry Reding Acked-by: Peter Chen Signed-off-by: Peter Geis Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201218120246.7759-6-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Rename UDC to USB

2021-01-13T10:26:34Z

Rename all occurrences in the code from "udc" to "usb" and change the Kconfig entry in order to show that this driver supports USB modes other than device-only mode. The follow up patch will add host-mode support and it will be cleaner to perform the renaming separately, i.e. in this patch. Tested-by: Matt Merhar Tested-by: Nicolas Chauvet Tested-by: Peter Geis Tested-by: Ion Agorria Acked-by: Thierry Reding Acked-by: Peter Chen Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201218120246.7759-5-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: tegra: Remove MODULE_ALIAS

2021-01-13T10:26:34Z

The OF core adds an alias based on the OF device ID table, which is enough to have the driver autoloaded. The legacy MODULE_ALIAS macro was relevant to a pre-OF board files which manually created platform devices, this is irrelevant to the modern ARM kernels since devices are created by the OF core. Remove the unnecessary macro in order to keep the driver's code cleaner. Tested-by: Matt Merhar Tested-by: Nicolas Chauvet Tested-by: Peter Geis Tested-by: Ion Agorria Acked-by: Thierry Reding Acked-by: Peter Chen Signed-off-by: Dmitry Osipenko Link: https://lore.kernel.org/r/20201218120246.7759-4-digetx@gmail.com Signed-off-by: Greg Kroah-Hartman