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

usb: chipidea: udc: Add revision check of 2.20[CI_REVISION_22]

2023-11-22T12:02:53Z

Issue: Adding a dTD to a Primed Endpoint May Not Get Recognized with revision 2.20a. There is an issue with the add dTD tripwire semaphore (ATDTW bit in USBCMD register) that can cause the controller to ignore a dTD that is added to a primed endpoint. When this happens, the software can read the tripwire bit and the status bit at '1' even though the endpoint is unprimed. This issue observed with the Windows host machine. Workaround: The software must implement a periodic cycle, and check for each dTD pending on execution (Active = 1), if the endpoint is primed. It can do this by reading the corresponding bits in the ENDPTPRIME and ENDPTSTAT registers. If these bits are read at 0, the software needs to re-prime the endpoint by writing 1 to the corresponding bit in the ENDPTPRIME register. Added conditional revision check of 2.20[CI_REVISION_22] along with 2.40. Signed-off-by: Piyush Mehta Acked-by: Peter Chen Link: https://lore.kernel.org/r/20231102070603.777313-1-piyush.mehta@amd.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: Remove an unnecessary NULL value

2023-08-04T12:48:55Z

The NULL initialization of the pointers assigned by kzalloc() first is not necessary, because if the kzalloc() failed, the pointers will be assigned NULL, otherwise it works as usual. so remove it. Signed-off-by: Ruan Jinjie Link: https://lore.kernel.org/r/20230804093253.91647-4-ruanjinjie@huawei.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: add USB PHY event

2023-07-25T16:24:17Z

Add USB PHY event for below situation: - usb role changed - vbus connect - vbus disconnect - gadget driver is enumerated USB PHY driver can get the last event after above situation occurs and deal with different situations. Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20230627110353.1879477-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: add suspend/resume support for device controller

2022-10-23T12:34:53Z

The controller's power may be powered off during system suspend. This will add suspend/resume support when the controller suffers power lost. Signed-off-by: Xu Yang Acked-by: Peter Chen Link: https://lore.kernel.org/r/20221013151442.3262951-5-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

Merge 5.19-rc4 into usb-next

2022-06-27T08:03:28Z

We need the USB fixes in here as well. Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: check request status before setting device address

2022-06-24T11:45:23Z

The complete() function may be called even though request is not completed. In this case, it's necessary to check request status so as not to set device address wrongly. Fixes: 10775eb17bee ("usb: chipidea: udc: update gadget states according to ch9") cc: Signed-off-by: Xu Yang Link: https://lore.kernel.org/r/20220623030242.41796-1-xu.yang_2@nxp.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: implement get_frame

2022-06-21T14:40:51Z

The chipidea udc core is capable of reading the current frame index from hardware. This patch adds the get_frame callback to the driver. Acked-by: Peter Chen Signed-off-by: Michael Grzeschik Link: https://lore.kernel.org/r/20220616194459.2981519-1-m.grzeschik@pengutronix.de Signed-off-by: Greg Kroah-Hartman

usb: udc: Fix typo in comment

2022-01-31T13:24:39Z

Replace disbale with disable Signed-off-by: tangmeng Link: https://lore.kernel.org/r/20220127071619.31812-1-tangmeng@uniontech.com Signed-off-by: Greg Kroah-Hartman

usb: chipidea: udc: make controller hardware endpoint primed

2021-10-10T13:05:24Z

Root-cause: There is an issue like endpoint is not recognized as primed, when bus have more pressure and the add dTD tripwire semaphore (ATDTW bit in USBCMD register) that can cause the controller to ignore a dTD that is added to a primed endpoint. This issue observed with the Windows10 host machine. Workaround: The software must implement a periodic cycle, and check for each dTD, if the endpoint is primed. It can do this by reading the corresponding bits in the ENDPTPRIME and ENDPTSTAT registers. If these bits are read at 0, the software needs to re-prime the endpoint by writing 1 to the corresponding bit in the ENDPTPRIME register. Added conditional revision check of 2.20[CI_REVISION_22]. Link: https://lore.kernel.org/linux-usb/SJ0PR02MB8644CBBA848A0F68323F1AA5D4D99@SJ0PR02MB8644.namprd02.prod.outlook.com/ Acked-by: Peter Chen Signed-off-by: Piyush Mehta Link: https://lore.kernel.org/r/20210913140005.955699-1-piyush.mehta@xilinx.com Signed-off-by: Greg Kroah-Hartman

Merge 5.13-rc4 into usb-next

2021-05-31T07:50:26Z

We need the usb/thunderbolt fixes in here as well. Signed-off-by: Greg Kroah-Hartman