kernel/linux.git/drivers/usb/chipidea/core.c, branch v6.18.22

usb: Use (of|device)_property_present() for non-boolean properties

2024-11-05T12:29:26+00:00

The use of (of|device)_property_read_bool() for non-boolean properties is deprecated in favor of of_property_present() when testing for property presence. Signed-off-by: Rob Herring (Arm) Acked-by: Peter Chen Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/20241104190820.277702-1-robh@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add CI_HDRC_HAS_SHORT_PKT_LIMIT flag

2024-10-04T13:13:58+00:00

Currently, the imx deivice controller has below limitations: 1. can't generate short packet interrupt if IOC not set in dTD. So if one request span more than one dTDs and only the last dTD set IOC, the usb request will pending there if no more data comes. 2. the controller can't accurately deliver data to differtent usb requests in some cases due to short packet. For example: one usb request span 3 dTDs, then if the controller received a short packet the next packet will go to 2nd dTD of current request rather than the first dTD of next request. 3. can't build a bus packet use multiple dTDs. For example: controller needs to send one packet of 512 bytes use dTD1 (200 bytes) + dTD2 (312 bytes), actually the host side will see 200 bytes short packet. Based on these limits, add CI_HDRC_HAS_SHORT_PKT_LIMIT flag and use it on imx platforms. Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20240923081203.2851768-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: Switch back to struct platform_driver::remove()

2024-10-04T13:13:03+00:00

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/usb to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20240924084329.53094-2-u.kleine-koenig@baylibre.com Signed-off-by: Greg Kroah-Hartman

Revert "usb: chipidea: move ci_ulpi_init after the phy initialization"

2024-06-04T12:51:09+00:00

This reverts commit 22ffd399e6e7aa18ae0314278ed0b7f05f8ab679. People report this commit causes the driver defer probed, and never back to work[1][2]. [1] https://lore.kernel.org/lkml/20240407011913.GA168730@nchen-desktop/T/#mc2b93bc11a8b01ec7cd0d0bf6b0b03951d9ef751 [2] https://lore.kernel.org/lkml/20240407011913.GA168730@nchen-desktop/T/#me87d9a2a76c07619d83b3879ea14780da89fbbbf Cc: Michael Grzeschik Cc: Marek Szyprowski Cc: Wouter Franken Signed-off-by: Peter Chen Link: https://lore.kernel.org/r/20240517023648.3459188-1-peter.chen@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: chipidea: move ci_ulpi_init after the phy initialization

2024-04-09T15:38:03+00:00

The function ci_usb_phy_init is already handling the hw_phymode_configure path which is also only possible after we have a valid phy. So we move the ci_ulpi_init after the phy initialization to be really sure to be able to communicate with the ulpi phy. Signed-off-by: Michael Grzeschik Acked-by: Peter Chen Link: https://lore.kernel.org/r/20240328-chipidea-phy-misc-v1-1-907d9de5d4df@pengutronix.de Signed-off-by: Greg Kroah-Hartman

usb: chipidea: core: handle power lost in workqueue

2024-01-28T00:39:14+00:00

When power is recycled in usb controller during system power management, the controller will recognize it and switch role if role has been changed during power lost. In current design, it will be completed in resume() function. However, this may bring issues since usb class devices have their pm operations too and these device's resume() functions are still not being called at this point. When usb controller recognized host role should be stopped, these usb class devices will be removed at this point. But these usb class devices can't be removed in some cases, such as scsi devices. Since scsi driver may sync data to U-disk, however it will block there because scsi drvier can only handle pm request when is in suspended state. Therefore, there may exist a dependency between ci_resume() and usb class device's resume(). To break this potential dependency, we need to handle power lost work in a workqueue. Fixes: 74494b33211d ("usb: chipidea: core: add controller resume support when controller is powered off") cc: stable@vger.kernel.org Signed-off-by: Xu Yang Link: https://lore.kernel.org/r/20240119123537.3614838-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: wait controller resume finished for wakeup irq

2024-01-04T15:01:56+00:00

After the chipidea driver introduce extcon for id and vbus, it's able to wakeup from another irq source, in case the system with extcon ID cable, wakeup from usb ID cable and device removal, the usb device disconnect irq may come firstly before the extcon notifier while system resume, so we will get 2 "wakeup" irq, one for usb device disconnect; and one for extcon ID cable change(real wakeup event), current driver treat them as 2 successive wakeup irq so can't handle it correctly, then finally the usb irq can't be enabled. This patch adds a check to bypass further usb events before controller resume finished to fix it. Fixes: 1f874edcb731 ("usb: chipidea: add runtime power management support") cc: Acked-by: Peter Chen Signed-off-by: Xu Yang Signed-off-by: Li Jun Link: https://lore.kernel.org/r/20231228110753.1755756-2-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: Remove usage of the deprecated ida_simple_xx() API

2023-12-15T12:53:33+00:00

ida_alloc() and ida_free() should be preferred to the deprecated ida_simple_get() and ida_simple_remove(). This is less verbose. Signed-off-by: Christophe JAILLET Acked-by: Peter Chen Link: https://lore.kernel.org/r/8bf382976c0ba0986c0dbe93427266273f0776ef.1702230217.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add workaround for chipidea PEC bug

2023-08-09T12:16:06+00:00

Some NXP processors using ChipIdea USB IP have a bug when frame babble is detected. Issue description: In USB camera test, our controller is host in HS mode. In ISOC IN, when device sends data across the micro frame, it causes the babble in host controller. This will clear the PE bit. In spec, it also requires to set the PEC bit and then set the PCI bit. Without the PCI interrupt, the software does not know the PE is cleared. This will add a flag CI_HDRC_HAS_PORTSC_PEC_MISSED to some impacted platform datas. And the ehci host driver will assert PEC by SW when specific conditions are satisfied. Signed-off-by: Xu Yang Link: https://lore.kernel.org/r/20230809024432.535160-2-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea/core: Use devm_platform_get_and_ioremap_resource()

2023-07-27T08:24:08+00:00

Convert platform_get_resource(), devm_ioremap_resource() to a single call to devm_platform_get_and_ioremap_resource(), as this is exactly what this function does. Signed-off-by: Yangtao Li Link: https://lore.kernel.org/r/20230726113816.888-2-frank.li@vivo.com Signed-off-by: Greg Kroah-Hartman