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| author | Manan Aurora <maurora@google.com> | 2023-10-31 03:46:41 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-01-04 16:00:41 +0100 |
| commit | 398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc (patch) | |
| tree | 1f876a8eabac27cd13b1eb1384482a9591c6c7ae /drivers/usb/dwc3/gadget.c | |
| parent | cd099cde4ed264403b434d8344994f97ac2a4349 (diff) | |
| download | linux-stable-398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc.tar.gz linux-stable-398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc.tar.bz2 linux-stable-398aa9a7e77cf23c2a6f882ddd3dcd96f21771dc.zip | |
usb: dwc3: Support EBC feature of DWC_usb31
Support configuration and use of bulk endpoints in the so-called EBC
mode described in the DBC_usb31 databook (appendix E)
Added a bit fifo_mode to usb_ep to indicate to the UDC driver that a
specific endpoint is to operate in the EBC (or equivalent) mode when
enabled
Added macros for bits 15 and 14 of DEPCFG parameter 1 to indicate EBC
mode and write back behaviour. These bits will be set to 1 when
configuring an EBC endpoint as described in the programming guide
Signed-off-by: Manan Aurora <maurora@google.com>
Link: https://lore.kernel.org/r/20231031034641.660606-1-maurora@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 88d8d589f014..c15e965ea95a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -673,6 +673,12 @@ static int dwc3_gadget_set_ep_config(struct dwc3_ep *dep, unsigned int action) params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1); } + if (dep->endpoint.fifo_mode) { + if (!(dwc->hwparams.hwparams4 & DWC3_EXT_BUFF_CONTROL)) + return -EINVAL; + params.param1 |= DWC3_DEPCFG_EBC_HWO_NOWB | DWC3_DEPCFG_USE_EBC; + } + return dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_SETEPCONFIG, ¶ms); } |