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| author | Tony Lindgren <tony@atomide.com> | 2018-08-28 19:58:03 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2018-08-28 19:58:03 +0300 |
| commit | ea4d65f14f6aaa53e379b93c5544245ef081b3e7 (patch) | |
| tree | a15485f4f1cf547a52b31fa8e16e14b9579b7200 /drivers/usb/dwc2/platform.c | |
| parent | ce32d59ee2cd036f6e8a6ed17a06a0b0bec5c67c (diff) | |
| parent | 496f3347d834aec91c38b45d6249ed00f58ad233 (diff) | |
| download | linux-ea4d65f14f6aaa53e379b93c5544245ef081b3e7.tar.xz | |
Merge branch 'perm-fix' into omap-for-v4.19/fixes-v2
Diffstat (limited to 'drivers/usb/dwc2/platform.c')
| -rw-r--r-- | drivers/usb/dwc2/platform.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 4c0819554bcd..9a53a58e676e 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -353,6 +353,23 @@ static void dwc2_driver_shutdown(struct platform_device *dev) } /** + * dwc2_check_core_endianness() - Returns true if core and AHB have + * opposite endianness. + * @hsotg: Programming view of the DWC_otg controller. + */ +static bool dwc2_check_core_endianness(struct dwc2_hsotg *hsotg) +{ + u32 snpsid; + + snpsid = ioread32(hsotg->regs + GSNPSID); + if ((snpsid & GSNPSID_ID_MASK) == DWC2_OTG_ID || + (snpsid & GSNPSID_ID_MASK) == DWC2_FS_IOT_ID || + (snpsid & GSNPSID_ID_MASK) == DWC2_HS_IOT_ID) + return false; + return true; +} + +/** * dwc2_driver_probe() - Called when the DWC_otg core is bound to the DWC_otg * driver * @@ -395,6 +412,8 @@ static int dwc2_driver_probe(struct platform_device *dev) dev_dbg(&dev->dev, "mapped PA %08lx to VA %p\n", (unsigned long)res->start, hsotg->regs); + hsotg->needs_byte_swap = dwc2_check_core_endianness(hsotg); + retval = dwc2_lowlevel_hw_init(hsotg); if (retval) return retval; |