diff options
| author |   Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2020-04-11 19:20:01 -0700 |
|---|---|---|
| committer |   Felipe Balbi <balbi@kernel.org> | 2020-05-25 11:09:40 +0300 |
| commit | 9af21dd6faeba593fb47f5cceaf69b1e5a3ff95f (patch) | |
| tree | ed12d18ee5161ecea71fc70e9c42ad6295e8158c /drivers/usb/dwc3/host.c | |
| parent | usb: gadget: tegra-xudc: add port_speed_quirk (diff) | |
| download | wireguard-linux-9af21dd6faeba593fb47f5cceaf69b1e5a3ff95f.tar.xz wireguard-linux-9af21dd6faeba593fb47f5cceaf69b1e5a3ff95f.zip | |
usb: dwc3: Add support for DWC_usb32 IP
Synopsys introduces a new controller DWC_usb32. It supports dual-lane
and speed up to 20 Gbps, and the DWC3 driver will drive this controller.
Currently the driver uses a single field dwc->revision to ID both
DWC_usb3 and DWC_usb31 and their version number. This was sufficient for
two IPs, but this method doesn't work with additional IPs. As a result,
let's separate the dwc->revision field to 2 separate fields: ip and
revision. The ip field now stores the ID of the controller's IP while
the revision field stores the controller's version number.
This new scheme enforces DWC3 to compare the revision within the same IP
only. As a result, we must update all the revision check of the
controller to check its corresponding IP.
To help with this enforcement, we create a few macros to help with
the common version checks:
DWC3_IP_IS(IP)
DWC3_VER_IS(IP, VERSION)
DWC3_VER_IS_PRIOR(IP, VERSION)
DWC3_VER_IS_WITHIN(IP, LOWER_VERSION, UPPER_VERSION)
DWC3_VER_TYPE_IS_WITHIN(IP, VERSION,
LOWER_VERSION_TYPE,
UPPER_VERSION_TYPE)
The DWC_usb32 controller operates using the same programming model and
with very similar configurations as its previous controllers. Please
note that the various IP and revision checks in this patch match the
current checks for DWC_usb31 version 1.90a. Additional configurations
that are unique to DWC_usb32 are applied separately.
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/dwc3/host.c')
| -rw-r--r-- | drivers/usb/dwc3/host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c index 86dbd012b984..bef1c1ac2067 100644 --- a/drivers/usb/dwc3/host.c +++ b/drivers/usb/dwc3/host.c @@ -104,7 +104,7 @@ int dwc3_host_init(struct dwc3 *dwc) * * This following flag tells XHCI to do just that. */ - if (dwc->revision <= DWC3_REVISION_300A) + if (DWC3_VER_IS_WITHIN(DWC3, ANY, 300A)) props[prop_idx++] = PROPERTY_ENTRY_BOOL("quirk-broken-port-ped"); if (prop_idx) { |