[v2,0/2] usb: dwc3: Introduce DWC_usb32 IP

Message

Thinh Nguyen April 12, 2020, 2:19 a.m. UTC

This patch series adds support to Synopsys DWC_usb32 controller. The controller
supports dual-lane and speed up to 20 Gbps, and the DWC3 driver will drive this
controller.

The configuration and programming model for DWC_usb32 is very similar to
DWC_usb31 and DWC_usb30. This series is one of the first sets, and it only
includes the necessary changes to recognize, initialize, and run DWC_usb32. It
includes:
* New IP checking scheme
* IP Checks for DWC_usb32
* New MDWIDTH parameter for DWC_usb32

The change to support lane count and lane speed mantissa will come in a
separate series. Hopefully this helps simplify the review process and help push
the change in steps.

This series is base off of Felipe's testing/next branch:
https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git/log/?h=testing/next

It also depends on the following patches in Felipe's testing/fixes branch:
usb: dwc3: Fix GTXFIFOSIZ.TXFDEP macro name
usb: dwc3: gadget: Properly set maxpacket limit

https://patchwork.kernel.org/cover/11283761/

https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git/log/?h=testing/fixes

Changes in v2:
 - Change the macro to avoid constant to constant comparison static analysis
   warnings. (DWC3x_VERSION_ANY == DWC3x_VERSION_XXX) => !(DWC3x_VERSION_XXX)


Thinh Nguyen (2):
  usb: dwc3: Add support for DWC_usb32 IP
  usb: dwc3: Get MDWIDTH for DWC_usb32

 drivers/usb/dwc3/core.c    | 49 ++++++++++++---------------
 drivers/usb/dwc3/core.h    | 69 +++++++++++++++++++++----------------
 drivers/usb/dwc3/debugfs.c | 14 ++++++--
 drivers/usb/dwc3/gadget.c  | 84 ++++++++++++++++++++++++----------------------
 drivers/usb/dwc3/host.c    |  2 +-
 5 files changed, 119 insertions(+), 99 deletions(-)