[PATCH v4 0/3] Add the address in traces

[Prashanth K <prashanth.k@oss.qualcomm.com>]

When multiple DWC3 controllers are being used, trace events from
different instances get mixed up making debugging difficult as
there's no way to distinguish which instance generated the trace.

Hence append the controller register base address into ftrace.
This needs the following reworks which is addressed using this
patch series.

  1. Removal of dep->regs and use dwc->regs everywhere
  2. Use dwc pointer in all dwc3_readl/writel()
  3. Adding the base addr in traces.

Changes in v4:
- Updated the documentation and commit message.
- Link to v3: https://lore.kernel.org/all/20260113103400.2347763-1-prashanth.k@oss.qualcomm.com/

Changes in v3:
- Renamed the variable to 'address'.
- Used u32 instead of string/char[].
- Link to v2: https://lore.kernel.org/all/20260105115325.1765176-1-prashanth.k@oss.qualcomm.com/

Changes in v2:
- Avoid using macros for dwc3_readl/writel()
- Use base address intraces instead of dev name.
- Split the patch into a series.
- Link to v1: https://lore.kernel.org/all/20250825114433.3170867-1-prashanth.k@oss.qualcomm.com/

Prashanth K (3):
  usb: dwc3: Remove of dep->regs
  usb: dwc3: Add dwc pointer to dwc3_readl/writel
  usb: dwc3: Log dwc3 address in traces

 drivers/usb/dwc3/core.c    | 199 +++++++++++++++++++------------------
 drivers/usb/dwc3/core.h    |  12 +--
 drivers/usb/dwc3/debugfs.c |  44 ++++----
 drivers/usb/dwc3/drd.c     |  76 +++++++-------
 drivers/usb/dwc3/ep0.c     |  22 ++--
 drivers/usb/dwc3/gadget.c  | 164 +++++++++++++++---------------
 drivers/usb/dwc3/gadget.h  |   4 +-
 drivers/usb/dwc3/io.h      |  11 +-
 drivers/usb/dwc3/trace.h   |  88 ++++++++++------
 drivers/usb/dwc3/ulpi.c    |  10 +-
 10 files changed, 327 insertions(+), 303 deletions(-)

-- 
2.34.1