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34b990e9 |
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09-Apr-2024 |
Fabio Estevam <festevam@denx.de> |
usb: misc: onboard_usb_hub: Disable the USB hub clock on failure In case regulator_bulk_enable() fails, the previously enabled USB hub clock should be disabled. Fix it accordingly. Fixes: 65e62b8a955a ("usb: misc: onboard_usb_hub: Add support for clock input") Cc: stable <stable@kernel.org> Signed-off-by: Fabio Estevam <festevam@denx.de> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20240409162910.2061640-1-festevam@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
ec94233c |
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04-Mar-2024 |
Javier Carrasco <javier.carrasco@wolfvision.net> |
usb: misc: onboard_hub: use pointer consistently in the probe function Commit 14485de431b0 ("usb: Use device_get_match_data()") overlooked the already existing pointer to pdev->dev 'dev'. Use the existing pointer 'dev' in device_get_match_data() to keep code consistency. Acked-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net> Link: https://lore.kernel.org/r/20240305-onboard_xvf3500-v7-1-ad3fb50e593b@wolfvision.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
966bf794 |
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27-Feb-2024 |
Macpaul Lin <macpaul.lin@mediatek.com> |
usb: misc: onboard_usb_hub: Add support for TI TUSB8020B The TI TUSB8020B is a 2-port USB 3.0 hub. Add support for this hub in the driver in order to bring up reset, and supply dependencies. Power-up: Issue a GPIO reset (GRSTz) 3ms after VDD and VDD33 stabilize. Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20240227090228.22156-2-macpaul.lin@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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49a78b05 |
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03-Jan-2024 |
Yajun Deng <yajun.deng@linux.dev> |
USB: core: Use device_driver directly in struct usb_driver and usb_device_driver There is usbdrv_wrap in struct usb_driver and usb_device_driver, it contains device_driver and for_devices. for_devices is used to distinguish between device drivers and interface drivers. Like the is_usb_device(), it tests the type of the device. We can test that if the probe of device_driver is equal to usb_probe_device in is_usb_device_driver(), and then the struct usbdrv_wrap is no longer needed. Clean up struct usbdrv_wrap, use device_driver directly in struct usb_driver and usb_device_driver. This makes the code cleaner. Signed-off-by: Yajun Deng <yajun.deng@linux.dev> Acked-by: Alan Stern <stern@rowland.harvard.edu> Link: https://lore.kernel.org/r/20240104032822.1896596-1-yajun.deng@linux.dev Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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24af68a0 |
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26-Nov-2023 |
Frieder Schrempf <frieder.schrempf@kontron.de> |
usb: misc: onboard_usb_hub: Add support for Cypress CY7C6563x The Cypress CY7C6563x is a 2/4-port USB 2.0 hub. Add support for this hub in the driver in order to bring up reset, supply or clock dependencies. There is no reset pulse width given in the datasheet so we expect a minimal value of 1us to be enough. This hasn't been tested though due to lack of hardware which has the reset connected to a GPIO. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Link: https://lore.kernel.org/r/20231127112234.109073-3-frieder@fris.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
65e62b8a |
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26-Nov-2023 |
Frieder Schrempf <frieder.schrempf@kontron.de> |
usb: misc: onboard_usb_hub: Add support for clock input Most onboard USB hubs have a dedicated crystal oscillator but on some boards the clock signal for the hub is provided by the SoC. In order to support this, we add the possibility of specifying a clock in the devicetree that gets enabled/disabled when the hub is powered up/down. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Link: https://lore.kernel.org/r/20231127112234.109073-2-frieder@fris.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ea3ba10f |
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26-Nov-2023 |
Frieder Schrempf <frieder.schrempf@kontron.de> |
usb: misc: onboard_usb_hub: Print symbolic error names Instead of printing the decimal error codes, let's use the more human-readable symbolic error names provided by the %pe printk format specifier. Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de> Link: https://lore.kernel.org/r/20231127112234.109073-1-frieder@fris.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
6972b38c |
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13-Nov-2023 |
Stefan Eichenberger <stefan.eichenberger@toradex.com> |
usb: misc: onboard-hub: add support for Microchip USB5744 Add support for the Microchip USB5744 USB3.0 and USB2.0 Hub. The Microchip USB5744 supports two power supplies, one for 1V2 and one for 3V3. According to the datasheet there is no need for a delay between power on and reset, so this value is set to 0. Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Cc: stable <stable@kernel.org> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20231113145921.30104-3-francesco@dolcini.it Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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14485de4 |
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09-Oct-2023 |
Rob Herring <robh@kernel.org> |
usb: Use device_get_match_data() Use preferred device_get_match_data() instead of of_match_device() to get the driver match data. With this, adjust the includes to explicitly include the correct headers. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20231009211356.3242037-16-robh@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e59e3815 |
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11-Sep-2023 |
Javier Carrasco <javier.carrasco@wolfvision.net> |
usb: misc: onboard_hub: add support for Microchip USB2412 USB 2.0 hub The USB2412 is a 2-Port USB 2.0 hub controller that provides a reset pin and a single 3v3 powre source, which makes it suitable to be controlled by the onboard_hub driver. This hub has the same reset timings as USB2514/2517 and the same onboard hub specific-data can be reused for USB2412. Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net> Cc: stable <stable@kernel.org> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230911-topic-2412_onboard_hub-v1-1-7704181ddfff@wolfvision.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
b43cd82a |
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23-Jun-2023 |
Benjamin Bara <benjamin.bara@skidata.com> |
usb: misc: onboard-hub: add support for Cypress HX3 USB 3.0 family The HX3 comes in different variants (up to 4 USB 3.0 ports; multi-TT), e.g. CYUSB330x/CYUSB331x/CYUSB332x/CYUSB230x. It operates with two different power supplies: 1V2 and 3V3. Add the support for this hub, for controlling the reset pin and the power supplies. Reset time is extracted from data sheet, page 24: "The RESETN pin can be tied to VDD_IO through an external resistor and to ground (GND) through an external capacitor (minimum 5 ms time constant)." V_IH min is given at 0.7 * 3V3 (page 34), therefore use 10ms. Also add USB PIDs for the USB 2.0 and USB 3.0 root hub. Acked-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Link: https://lore.kernel.org/r/20230620-hx3-v7-2-f79b4b22a1bf@skidata.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
f26069c9 |
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23-Jun-2023 |
Benjamin Bara <benjamin.bara@skidata.com> |
usb: misc: onboard-hub: support multiple power supplies As some of the onboard hubs require multiple power supplies, provide the environment to support them. Signed-off-by: Benjamin Bara <benjamin.bara@skidata.com> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230620-hx3-v7-1-f79b4b22a1bf@skidata.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
d97b4b35 |
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23-Jun-2023 |
Anand Moon <linux.amoon@gmail.com> |
usb: misc: onboard_usb_hub: add Genesys Logic GL3523 hub support Genesys Logic GL3523 is a 4-port USB 3.1 hub that has a reset pin to toggle and a 5.0V core supply exported though an integrated LDO is available for powering it. Add the support for this hub, for controlling the reset pin and the core power supply. Signed-off-by: Anand Moon <linux.amoon@gmail.com> [m.felsch@pengutronix.de: include review feedback & port to 6.4] Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Link: https://lore.kernel.org/r/20230623142228.4069084-2-m.felsch@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
56dcc717 |
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30-May-2023 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
usb: misc: onboard_hub: Don't warn twice about problems during remove If onboard_hub_power_off() called by onboard_hub_remove() fails it emits an error message. Forwarding the returned error value to the driver core results in another error message. As the return value is otherwise ignored, just drop the return value. There is no side effect apart from suppressing the core's warning. Instead of returning zero unconditionally, convert to .remove_new() which has the same semantics as .remove() that unconditionally returns zero. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230530073633.2193618-1-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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f7c13cb4 |
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23-Feb-2023 |
Alexander Stein <alexander.stein@ew.tq-group.com> |
usb: misc: onboard-hub: add support for Microchip USB2517 USB 2.0 hub Add support for Microchip USB2517 USB 2.0 hub to the onboard usb hub driver. Adopt the generic usb-device compatible ("usbVID,PID"). This hub has the same reset timings as USB2514, so reuse that one. There is also an USB2517I which just has industrial temperature range. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Cc: stable <stable@kernel.org> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230223073920.2912298-1-alexander.stein@ew.tq-group.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
143307ad |
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17-Jan-2023 |
Anand Moon <linux.amoon@gmail.com> |
usb: misc: onboard_usb_hub: add VIA LAB VL817 hub support VIA LAB VL817 is a 4-port USB 3.1 hub and USB 2.0 root hub that has a reset pin to toggle and a 5.0V core supply exported though an integrated LDO is available for powering it. Add the support for this hub, for controlling the reset pin and the core power supply. Add USB device id's for USB 2.0 and USB 3.0 root hub. Signed-off-by: Anand Moon <linux.amoon@gmail.com> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230118044418.875-9-linux.amoon@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
db7cab26 |
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17-Jan-2023 |
Anand Moon <linux.amoon@gmail.com> |
usb: misc: onboard_usb_hub: add Genesys Logic GL852G hub support Genesys Logic GL852G is a 4-port USB 2.0 STT hub that has a reset pin to toggle and a 5.0V core supply exported though an integrated LDO is available for powering it. Add the support for this hub, for controlling the reset pin and the core power supply. Signed-off-by: Anand Moon <linux.amoon@gmail.com> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230118044418.875-5-linux.amoon@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
cde37881 |
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10-Jan-2023 |
Matthias Kaehlcke <mka@chromium.org> |
usb: misc: onboard_hub: Move 'attach' work to the driver Currently each onboard_hub platform device owns an 'attach' work, which is scheduled when the device probes. With this deadlocks have been reported on a Raspberry Pi 3 B+ [1], which has nested onboard hubs. The flow of the deadlock is something like this (with the onboard_hub driver built as a module) [2]: - USB root hub is instantiated - core hub driver calls onboard_hub_create_pdevs(), which creates the 'raw' platform device for the 1st level hub - 1st level hub is probed by the core hub driver - core hub driver calls onboard_hub_create_pdevs(), which creates the 'raw' platform device for the 2nd level hub - onboard_hub platform driver is registered - platform device for 1st level hub is probed - schedules 'attach' work - platform device for 2nd level hub is probed - schedules 'attach' work - onboard_hub USB driver is registered - device (and parent) lock of hub is held while the device is re-probed with the onboard_hub driver - 'attach' work (running in another thread) calls driver_attach(), which blocks on one of the hub device locks - onboard_hub_destroy_pdevs() is called by the core hub driver when one of the hubs is detached - destroying the pdevs invokes onboard_hub_remove(), which waits for the 'attach' work to complete - waits forever, since the 'attach' work can't acquire the device lock Use a single work struct for the driver instead of having a work struct per onboard hub platform driver instance. With that it isn't necessary to cancel the work in onboard_hub_remove(), which fixes the deadlock. The work is only cancelled when the driver is unloaded. [1] https://lore.kernel.org/r/d04bcc45-3471-4417-b30b-5cf9880d785d@i2se.com/ [2] https://lore.kernel.org/all/Y6OrGbqaMy2iVDWB@google.com/ Cc: stable@vger.kernel.org Fixes: 8bc063641ceb ("usb: misc: Add onboard_usb_hub driver") Link: https://lore.kernel.org/r/d04bcc45-3471-4417-b30b-5cf9880d785d@i2se.com/ Link: https://lore.kernel.org/all/Y6OrGbqaMy2iVDWB@google.com/ Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20230110172954.v2.2.I16b51f32db0c32f8a8532900bfe1c70c8572881a@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
e5854355 |
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10-Jan-2023 |
Matthias Kaehlcke <mka@chromium.org> |
usb: misc: onboard_hub: Invert driver registration order The onboard_hub 'driver' consists of two drivers, a platform driver and a USB driver. Currently when the onboard hub driver is initialized it first registers the platform driver, then the USB driver. This results in a race condition when the 'attach' work is executed, which is scheduled when the platform device is probed. The purpose of fhe 'attach' work is to bind elegible USB hub devices to the onboard_hub USB driver. This fails if the work runs before the USB driver has been registered. Register the USB driver first, then the platform driver. This increases the chances that the onboard_hub USB devices are probed before their corresponding platform device, which the USB driver tries to locate in _probe(). The driver already handles this situation and defers probing if the onboard hub platform device doesn't exist yet. Cc: stable@vger.kernel.org Fixes: 8bc063641ceb ("usb: misc: Add onboard_usb_hub driver") Link: https://lore.kernel.org/lkml/Y6W00vQm3jfLflUJ@hovoldconsulting.com/T/#m0d64295f017942fd988f7c53425db302d61952b4 Reported-by: Alexander Stein <alexander.stein@ew.tq-group.com> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Link: https://lore.kernel.org/r/20230110172954.v2.1.I75494ebee7027a50235ce4b1e930fa73a578fbe2@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
9bae996f |
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05-Dec-2022 |
Icenowy Zheng <uwu@icenowy.me> |
usb: misc: onboard_usb_hub: add Genesys Logic GL850G hub support Genesys Logic GL850G is a 4-port USB 2.0 STT hub that has a reset pin to toggle and a 3.3V core supply exported (although an integrated LDO is available for powering it with 5V). Add the support for this hub, for controlling the reset pin and the core power supply. Signed-off-by: Icenowy Zheng <uwu@icenowy.me> Acked-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20221206055228.306074-4-uwu@icenowy.me Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
1bcafc04 |
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05-Aug-2022 |
Matthias Kaehlcke <mka@chromium.org> |
usb: misc: onboard_usb_hub: Drop reset delay in onboard_hub_power_off() onboard_hub_power_off() currently has a delay after asserting the reset of the hub. There is already a delay in onboard_hub_power_on() before de-asserting the reset, which ensures that the reset is asserted for the required time, so the delay in _power_off() is not needed. Skip the reset GPIO check before calling gpiod_set_value_cansleep(), the function returns early when the GPIO descriptor is NULL. Reviewed-By: Alexander Stein <alexander.stein@ew.tq-group.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20220805111836.1.Id5a4dc0a2c046236116693aa55672295513a0f2a@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
8288c99f |
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28-Jul-2022 |
Alexander Stein <alexander.stein@ew.tq-group.com> |
usb: misc: onboard_usb_hub: Remove duplicated power_on delay onboard_hub_power_on() already ensures the reset pulse width delay, so there is no need to wait right after requesting GPIO as well. Fixes: 40758e493f4d ("usb: misc: onboard_usb_hub: Add reset-gpio support") Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20220728064937.917935-1-alexander.stein@ew.tq-group.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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ed92f435 |
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27-Jul-2022 |
Alexander Stein <alexander.stein@ew.tq-group.com> |
usb: misc: onboard_usb_hub: Add TI USB8041 hub support This is a 4-port 3.0 USB hub. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20220727141117.909361-2-alexander.stein@ew.tq-group.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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40758e49 |
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27-Jul-2022 |
Alexander Stein <alexander.stein@ew.tq-group.com> |
usb: misc: onboard_usb_hub: Add reset-gpio support Despite default reset upon probe, release reset line after powering up the hub and assert reset again before powering down. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> Link: https://lore.kernel.org/r/20220727141117.909361-1-alexander.stein@ew.tq-group.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
43993626 |
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26-Jul-2022 |
Fabrice Gasnier <fabrice.gasnier@foss.st.com> |
usb: misc: onboard-hub: add support for Microchip USB2514B USB 2.0 hub Add support for Microchip USB2514B USB 2.0 hub to the onboard usb hub driver. Adopt the generic usb-device compatible ("usbVID,PID"). Some STM32MP1 boards have this hub on-board, with a supply that needs to be enabled for proper operation. Acked-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com> Link: https://lore.kernel.org/r/20220726080708.162547-3-fabrice.gasnier@foss.st.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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#
8bc06364 |
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30-Jun-2022 |
Matthias Kaehlcke <mka@chromium.org> |
usb: misc: Add onboard_usb_hub driver The main issue this driver addresses is that a USB hub needs to be powered before it can be discovered. For discrete onboard hubs (an example for such a hub is the Realtek RTS5411) this is often solved by supplying the hub with an 'always-on' regulator, which is kind of a hack. Some onboard hubs may require further initialization steps, like changing the state of a GPIO or enabling a clock, which requires even more hacks. This driver creates a platform device representing the hub which performs the necessary initialization. Currently it only supports switching on a single regulator, support for multiple regulators or other actions can be added as needed. Different initialization sequences can be supported based on the compatible string. Besides performing the initialization the driver can be configured to power the hub off during system suspend. This can help to extend battery life on battery powered devices which have no requirements to keep the hub powered during suspend. The driver can also be configured to leave the hub powered when a wakeup capable USB device is connected when suspending, and power it off otherwise. Technically the driver consists of two drivers, the platform driver described above and a very thin USB driver that subclasses the generic driver. The purpose of this driver is to provide the platform driver with the USB devices corresponding to the hub(s) (a hub controller may provide multiple 'logical' hubs, e.g. one to support USB 2.0 and another for USB 3.x). Co-developed-by: Ravi Chandra Sadineni <ravisadineni@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Ravi Chandra Sadineni <ravisadineni@chromium.org> Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20220630123445.v24.3.I7c9a1f1d6ced41dd8310e8a03da666a32364e790@changeid Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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