kernel/linux.git/drivers/usb/dwc2/debugfs.c, branch v6.6.131

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: Add STM32 related debugfs entries

2021-03-10T08:37:15+00:00

These are entries related to STM32MP1 PHY control. Acked-by: Minas Harutyunyan Signed-off-by: Martin Devera Link: https://lore.kernel.org/r/20210227215528.12752-1-devik@eaxlabs.cz Signed-off-by: Greg Kroah-Hartman

USB: ch9: add "USB_" prefix in front of TEST defines

2020-06-24T13:01:24+00:00

For some reason, the TEST_ defines in the usb/ch9.h files did not have the USB_ prefix on it, making it a bit confusing when reading the file, as well as not the nicest thing to do in a uapi file. So fix that up and add the USB_ prefix on to them, and fix up all in-kernel usages. This included deleting the duplicate copy in the net2272.h file. Cc: Felipe Balbi Cc: Michal Simek Cc: Mathias Nyman Cc: Pawel Laszczak Cc: YueHaibing Cc: Nathan Chancellor Cc: Jason Yan Cc: Jia-Ju Bai Cc: Stephen Boyd Cc: Christophe JAILLET Cc: Arnd Bergmann Cc: Jules Irenge Cc: Alan Stern Cc: Thinh Nguyen Cc: Rob Gill Cc: Macpaul Lin Acked-by: Minas Harutyunyan Acked-by: Bin Liu Acked-by: Chunfeng Yun Acked-by: Peter Chen Link: https://lore.kernel.org/r/20200618144206.2655890-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

usb: dwc2: fix debugfs FIFO count

2020-01-15T09:39:21+00:00

The number of FIFOs may be lower than the number of endpoints. Use the correct total when printing FIFO details in debugfs. Acked-by: Minas Harutyunyan Signed-off-by: John Keeping Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

usb: dwc2: create debugfs directory under usb root

2019-11-14T03:16:35+00:00

Now the USB gadget subsystem can use the USB debugfs root directory, so move dwc2's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun Link: https://lore.kernel.org/r/1573541519-28488-7-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Add core parameter for service interval support

2018-10-02T07:49:26+00:00

Added core parameter for service interval based scheduling. Acked-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi

usb: dwc2: Modify dwc2_readl/writel functions prototype

2018-07-30T07:39:16+00:00

Added hsotg argument to dwc2_readl/writel function prototype, and also instead of address pass offset of register. hsotg will contain flag field for endianness. Also customized dwc2_set_bit and dwc2_clear_bit function for dwc2_readl/writel functions. Signed-off-by: Gevorg Sahakyan Signed-off-by: Felipe Balbi

USB: dwc2: no need to check return value of debugfs_create functions

2018-05-31T10:54:22+00:00

When calling debugfs functions, there is no need to ever check the return value. The function can work or not, but the code logic should never do something different based on this. Cc: Minas Harutyunyan Signed-off-by: Greg Kroah-Hartman

usb: dwc2: Fix kernel doc's warnings.

2018-05-21T07:02:13+00:00

Added descriptions for all not described parameters. Fix all kernel doc's warnings. Acked-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi

usb: dwc2: debugfs: Don't touch RX FIFO during register dump

2018-05-15T07:17:00+00:00

Dumping the registers via debugfs makes USB on Raspberry Pi completely unusable. The read of register GRXSTSP ("Receive Status Read and Pop Register") is responsible for this behaviour, because it pops the RX FIFO. So avoid this by omitting the relevant register. CC: Mian Yousaf Kaukab Fixes: 563cf017c443 ("usb: dwc2: debugfs: add support for complete register dump") Acked-by: Minas Harutyunyan Signed-off-by: Stefan Wahren Signed-off-by: Felipe Balbi