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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2018-09-26 16:54:31 +0300 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2018-09-26 16:54:31 +0300 |
| commit | aaccf3c97418f169afdbb5855e9cbcbda34e90fd (patch) | |
| tree | 5d4207e67958bdbc23288cf30178692f5534e1a0 /drivers/usb/dwc2/platform.c | |
| parent | f39684524b391c5a7ed0ac44db4fec3357af1c5d (diff) | |
| parent | 6bf4ca7fbc85d80446ac01c0d1d77db4d91a6d84 (diff) | |
| download | linux-aaccf3c97418f169afdbb5855e9cbcbda34e90fd.tar.xz | |
Merge tag 'v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into fbdev-for-next
Sync with upstream (which now contains fbdev-v4.19 changes) to
prepare a base for fbdev-v4.20 changes.
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..577642895b57 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 * @@ -419,6 +436,8 @@ static int dwc2_driver_probe(struct platform_device *dev) if (retval) return retval; + hsotg->needs_byte_swap = dwc2_check_core_endianness(hsotg); + retval = dwc2_get_dr_mode(hsotg); if (retval) goto error; |