kernel/linux.git/drivers/usb/dwc2/hcd.c, branch v6.4

usb: dwc2: Remove redundant license text

2022-09-22T13:52:29+00:00

SPDX-License-Identifier have been added in commit 5fd54ace4721 ("USB: add SPDX identifiers to all remaining files in drivers/usb/") There is no point in keeping the now redundant license text. Remove it. Acked-by: Minas Harutyunyan Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/030a7e187d707f8734a492cda7a6b54d459c4bb3.1662788747.git.christophe.jaillet@wanadoo.fr Signed-off-by: Greg Kroah-Hartman

usb: dwc2: drop unexpected word "the" in the comments

2022-06-24T11:37:34+00:00

there is an unexpected word "the" in the comments that need to be dropped file: ./drivers/usb/dwc2/hcd.c line: 1002 * even and the current frame number is even the the transfer changed to: * even and the current frame number is even the transfer Signed-off-by: Jiang Jian Link: https://lore.kernel.org/r/20220622103558.6647-1-jiangjian@cdjrlc.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: host: add TPL support

2022-06-22T05:38:22+00:00

The Target Peripheral List (TPL) is used to identify targeted devices during Embedded Host compliance testing. The user can add "tpl-support" in the device tree to enable it. Signed-off-by: Amelie Delaunay Signed-off-by: Fabrice Gasnier Acked-by: Minas Harutyunyan Link: https://lore.kernel.org/r/20220621152350.145745-5-fabrice.gasnier@foss.st.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Fix memory leak in dwc2_hcd_init

2022-06-10T09:12:20+00:00

usb_create_hcd will alloc memory for hcd, and we should call usb_put_hcd to free it when platform_get_resource() fails to prevent memory leak. goto error2 label instead error1 to fix this. Fixes: 856e6e8e0f93 ("usb: dwc2: check return value after calling platform_get_resource()") Cc: stable Acked-by: Minas Harutyunyan Signed-off-by: Miaoqian Lin Link: https://lore.kernel.org/r/20220530085413.44068-1-linmq006@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: do not gate off the hardware if it does not support clock gating

2022-01-06T14:27:53+00:00

We should not be clearing the HCD_FLAG_HW_ACCESSIBLE bit if the hardware does not support clock gating. Fixes: 50fb0c128b6e ("usb: dwc2: Add clock gating entering flow by system suspend") Acked-by: Minas Harutyunyan Signed-off-by: Dinh Nguyen Link: https://lore.kernel.org/r/20220104135922.734776-1-dinguyen@kernel.org Signed-off-by: Greg Kroah-Hartman

usb: dwc2: add otg_rev and otg_caps information for gadget driver

2021-10-25T07:20:26+00:00

Currently the dwc2 doesn't fill in the 'otg_caps' of usb_gadget structure. When registering a gadget device (e.g. via configfs), the usb_otg_descriptor_init() checks the 'otg_caps' and 'otg_rev'. It defaults to HNP and SRP bmAttributes if unspecified. There may be a mismatch with what's being set in dwc2 params structure. This result in the descriptors to be miss-configured in this case. So replace 'otg_cap' bit field by 'otg_caps' structure, so hnp, srp and otg_rev' can be configured directly in the params. It's then provided to the gadget struct. These parameters can be tuned for each platform. In case it's not set, it will default to current behavior. Also add option to setup these from the device tree by calling of_usb_update_otg_caps(). This provides support for standard properties such as "otg-rev", "hnp-disable" and "srp-disable" (see usb-drd.yaml). Signed-off-by: Fabrice Gasnier Link: https://lore.kernel.org/r/1634133425-25670-4-git-send-email-fabrice.gasnier@foss.st.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: check return value after calling platform_get_resource()

2021-09-14T08:32:56+00:00

It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Yang Yingliang Link: https://lore.kernel.org/r/20210831084236.1359677-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Skip clock gating on Samsung SoCs

2021-07-21T07:50:27+00:00

Commit 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.") changed the way the driver handles power down modes in a such way that it uses clock gating when no other power down mode is available. This however doesn't work well on the DWC2 implementation used on the Samsung SoCs. When a clock gating is enabled, system hangs. It looks that the proper clock gating requires some additional glue code in the shared USB2 PHY and/or Samsung glue code for the DWC2. To restore driver operation on the Samsung SoCs simply skip enabling clock gating mode until one finds what is really needed to make it working reliably. Fixes: 0112b7ce68ea ("usb: dwc2: Update dwc2_handle_usb_suspend_intr function.") Cc: stable Acked-by: Krzysztof Kozlowski Signed-off-by: Marek Szyprowski Link: https://lore.kernel.org/r/20210716050127.4406-1-m.szyprowski@samsung.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Add hibernation exiting flow by system resume

2021-04-22T09:55:34+00:00

Adds a new flow of exiting hibernation when PC is resumed from suspend state. Acked-by: Minas Harutyunyan Signed-off-by: Artur Petrosyan Link: https://lore.kernel.org/r/20210416124819.A3B26A005C@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Add hibernation entering flow by system suspend

2021-04-22T09:55:34+00:00

Adds a new flow of entering hibernation when PC is hibernated or suspended. Acked-by: Minas Harutyunyan Signed-off-by: Artur Petrosyan Link: https://lore.kernel.org/r/20210416124811.BBFDBA005C@mailhost.synopsys.com Signed-off-by: Greg Kroah-Hartman