diff options
Diffstat (limited to 'drivers/usb/host/ehci.h')
| -rw-r--r-- | drivers/usb/host/ehci.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index fdd073cc053b..9888ca5f5f36 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -207,6 +207,7 @@ struct ehci_hcd { /* one per controller */ unsigned has_fsl_port_bug:1; /* FreeScale */ unsigned has_fsl_hs_errata:1; /* Freescale HS quirk */ unsigned has_fsl_susp_errata:1; /* NXP SUSP quirk */ + unsigned has_ci_pec_bug:1; /* ChipIdea PEC bug */ unsigned big_endian_mmio:1; unsigned big_endian_desc:1; unsigned big_endian_capbase:1; @@ -707,6 +708,15 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc) #define ehci_has_fsl_susp_errata(e) ((e)->has_fsl_susp_errata) /* + * Some Freescale/NXP processors using ChipIdea IP have a bug in which + * disabling the port (PE is cleared) does not cause PEC to be asserted + * when frame babble is detected. + */ +#define ehci_has_ci_pec_bug(e, portsc) \ + ((e)->has_ci_pec_bug && ((e)->command & CMD_PSE) \ + && !(portsc & PORT_PEC) && !(portsc & PORT_PE)) + +/* * While most USB host controllers implement their registers in * little-endian format, a minority (celleb companion chip) implement * them in big endian format. |