diff options
| author | Pawel Laszczak <pawell@cadence.com> | 2020-12-07 13:32:24 +0300 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2020-12-29 07:36:13 +0300 |
| commit | 3d82904559f4f5a2622db1b21de3edf2eded7664 (patch) | |
| tree | a06f42704976fa6b5fed6178416fcea7cf9eee6e /drivers/usb/cdns3/gadget-export.h | |
| parent | e93e58d2740282d32c0278fab283eb0ae158bb59 (diff) | |
| download | linux-3d82904559f4f5a2622db1b21de3edf2eded7664.tar.xz | |
usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver
This patch introduces the main part of Cadence USBSSP DRD driver
to Linux kernel.
To reduce the patch size a little bit, the header file gadget.h was
intentionally added as separate patch.
The Cadence USBSSP DRD Controller is a highly configurable IP Core which
can be instantiated as Dual-Role Device (DRD), Peripheral Only and
Host Only (XHCI)configurations.
The current driver has been validated with FPGA platform. We have
support for PCIe bus, which is used on FPGA prototyping.
The host side of USBSS DRD controller is compliant with XHCI.
The architecture for device side is almost the same as for host side,
and most of the XHCI specification can be used to understand how
this controller operates.
Signed-off-by: Pawel Laszczak <pawell@cadence.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/cdns3/gadget-export.h')
| -rw-r--r-- | drivers/usb/cdns3/gadget-export.h | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/usb/cdns3/gadget-export.h b/drivers/usb/cdns3/gadget-export.h index 0f7cb2a92c9a..c37b6269b001 100644 --- a/drivers/usb/cdns3/gadget-export.h +++ b/drivers/usb/cdns3/gadget-export.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 */ /* - * Cadence USBSS DRD Driver - Gadget Export APIs. + * Cadence USBSS and USBSSP DRD Driver - Gadget Export APIs. * * Copyright (C) 2017 NXP * Copyright (C) 2017-2018 NXP @@ -10,7 +10,19 @@ #ifndef __LINUX_CDNS3_GADGET_EXPORT #define __LINUX_CDNS3_GADGET_EXPORT -#ifdef CONFIG_USB_CDNS3_GADGET +#if IS_ENABLED(CONFIG_USB_CDNSP_GADGET) + +int cdnsp_gadget_init(struct cdns *cdns); +#else + +static inline int cdnsp_gadget_init(struct cdns *cdns) +{ + return -ENXIO; +} + +#endif /* CONFIG_USB_CDNSP_GADGET */ + +#if IS_ENABLED(CONFIG_USB_CDNS3_GADGET) int cdns3_gadget_init(struct cdns *cdns); #else @@ -20,6 +32,6 @@ static inline int cdns3_gadget_init(struct cdns *cdns) return -ENXIO; } -#endif +#endif /* CONFIG_USB_CDNS3_GADGET */ #endif /* __LINUX_CDNS3_GADGET_EXPORT */ |