linux.git/drivers/usb/dwc3/debugfs.c, branch v5.8

usb: dwc3: Get MDWIDTH for DWC_usb32

2020-05-25T08:09:41+00:00

DWC_usb32 supports MDWIDTH value larger than 255 and up to 1023. The
field HWPARAMS6[9:8] stores the upper 2-bit values of the DWC_usb32's
MDWIDTH. Check that parameter and properly get the MDWIDTH for
DWC_usb32.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: create debugfs directory under usb root

2019-11-14T03:14:54+00:00

Now the USB gadget subsystem can use the USB debugfs root directory,
so move dwc3'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/1573541519-28488-4-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman

usb: dwc3: debugfs: Print/set link state for peripheral mode

2018-11-26T07:06:31+00:00

Current implementation only prints/sets the link state for peripheral
mode only. Check and prevent printing bogus link state if the current
mode of operation is not peripheral.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: Properly print/set link state for HS

2018-11-26T07:06:31+00:00

Highspeed device and below has different state names than superspeed and
higher. Add proper checks and printouts of link states for highspeed and
below.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: Dump internal LSP and ep registers

2018-11-26T07:06:31+00:00

To dump internal LSP and endpoint state debug registers, we must write
to GDBGLSPMUX register. This patch correctly dump LSP and endpoint
states from the debug registers.

If the controller is in device mode, all LSP and endpoint state
registers will be dumped via the debugfs attribute "lsp_dump". In host
mode, the user has to write the LSP number to "lsp_dump" to dump a
specific LSP selection.

Fixes: 80b776340c78 ("usb: dwc3: Dump LSP and BMU debug info")
Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: Print eps Tx/RxFIFO in bytes

2018-11-26T07:06:31+00:00

TxFIFO and RxFIFO from GDBGFIFOSPACE are fifo depths in MDWIDTH. Convert
them into bytes for easier read.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: Properly name Tx/RxFIFO

2018-11-26T07:06:31+00:00

The Tx/RxFIFO types in the GDBGFIFOSPACE.FIFO_QUEUE_SELECT are not
queue. Properly rename them.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

USB: dwc3: 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: Felipe Balbi 
Signed-off-by: Greg Kroah-Hartman

usb: dwc3: Dump LSP and BMU debug info

2018-03-22T08:49:02+00:00

Dump LSP and BMU debug info.

Signed-off-by: Thinh Nguyen 
Signed-off-by: Felipe Balbi

usb: dwc3: debugfs: Re-use DEFINE_SHOW_ATTRIBUTE() macro

2018-03-08T13:12:00+00:00

...instead of open coding file operations followed by custom ->open()
callbacks per each attribute.

Reviewed-by: Andy Shevchenko 
Signed-off-by: Felipe Balbi