On Thursday 03 May 2007, Robert P. J. Day wrote:
>
> $ ../dead_config.sh drivers/usb
I'm ignoring the USB serial stuff here.
Most of the "gadget_chips.h" symbols are not dead, they're just
constants reserved for drivers that are currently not in the
kernel.org tree. The role is much the same as symbols generated
from the arch/arm/tools/mach-types file.
That said, I think Montavista has a few drivers it's not even
tried to push, ditto handhelds.org ... see comments below.
Thanks for sanity checking this stuff, by the way.
> ========== MACH_OMAP_H4_OTG ==========
> drivers/usb/gadget/omap_udc.c:2159:#ifndef CONFIG_MACH_OMAP_H4_OTG
This is set in some of the OMAP patches that haven't yet merged.
> ========== USB_GADGETFS_PXA2XX ==========
> drivers/usb/gadget/inode.c:1508:#ifndef CONFIG_USB_GADGETFS_PXA2XX
Hmm... should be "_GADGET_" not "_GADGETFS_". Fixed in a patch
that I'll submit.
> ========== USB_GADGET_HUSB2DEV ==========
> drivers/usb/gadget/gadget_chips.h:78:#ifdef CONFIG_USB_GADGET_HUSB2DEV
> drivers/usb/gadget/ether.c:281:#ifdef CONFIG_USB_GADGET_HUSB2DEV
This is Atmel's AVR32 AT32ap700x USB code (high speed),
available but (like many AVR32 drivers) not yet submitted.
> ========== USB_GADGET_IMX ==========
> drivers/usb/gadget/gadget_chips.h:96:#ifdef CONFIG_USB_GADGET_IMX
Not sure what the story is with this one. Freescale's support
for IMX family seems kind of spotty.
I'm sure I saw a driver for this at one point, but it's clearly
not been submitted and I don't know where it'd be now.
> ========== USB_GADGET_MPC8272 ==========
> drivers/usb/gadget/gadget_chips.h:122:#ifdef CONFIG_USB_GADGET_MPC8272
ISTR this is a Montavista driver; currently available with
one of their kernels, but not yet pushed upstream.
> ========== USB_GADGET_MQ11XX ==========
> drivers/usb/gadget/gadget_chips.h:54:#ifdef CONFIG_USB_GADGET_MQ11XX
> drivers/usb/gadget/ether.c:249:#ifdef CONFIG_USB_GADGET_MQ11XX
Last I heard, this driver was sitting in the hh.org tree ...
> ========== USB_GADGET_MUSB_HDRC ==========
> drivers/usb/gadget/gadget_chips.h:116:#ifdef CONFIG_USB_GADGET_MUSB_HDRC
> drivers/usb/gadget/ether.c:277:#ifdef CONFIG_USB_GADGET_MUSB_HDRC
This is in the OMAP tree; probably nearly ready to go upstream.
(HDRC == Highspeed Dual-Role Controller ... quite complex.)
> ========== USB_GADGET_MUSBHSFC ==========
> drivers/usb/gadget/gadget_chips.h:109:#ifdef CONFIG_USB_GADGET_MUSBHSFC
> drivers/usb/gadget/ether.c:273:#ifdef CONFIG_USB_GADGET_MUSBHSFC
Another Montavista driver, not yet submitted.
> ========== USB_GADGET_N9604 ==========
> drivers/usb/gadget/gadget_chips.h:66:#ifdef CONFIG_USB_GADGET_N9604
> drivers/usb/gadget/ether.c:257:#ifdef CONFIG_USB_GADGET_N9604
Driver evidently not yet ported from Linux 2.4 (uClinux).
It's one of the few discrete (non-SOC) controllers I've come
across which doesn't use PCI and isn't OTG-capable; seems that
most vendors just want to integrate USB into their SOCs.
> ========== USB_GADGET_PXA27X ==========
> drivers/usb/gadget/gadget_chips.h:72:#ifdef CONFIG_USB_GADGET_PXA27X
> drivers/usb/gadget/ether.c:261:#ifdef CONFIG_USB_GADGET_PXA27X
Various versions of this are available. So far as I know, none
is yet mergeable ... I've suggested that folk just stop trying
to use the broken-by-design config management stuff and instead
use it just like the PXA 25x silicon. A long and painful saga.
> ========== USB_GADGET_S3C2410 ==========
> drivers/usb/gadget/gadget_chips.h:84:#ifdef CONFIG_USB_GADGET_S3C2410
> drivers/usb/gadget/ether.c:265:#ifdef CONFIG_USB_GADGET_S3C2410
Recently submitted ... the driver's been in use since 2005 or so.
So I'm glad to see that it's starting to move upstream!
> ========== USB_GADGET_SA1100 ==========
> drivers/usb/gadget/gadget_chips.h:42:#ifdef CONFIG_USB_GADGET_SA1100
> drivers/usb/gadget/ether.c:300:#ifdef CONFIG_USB_GADGET_SA1100
I don't think that driver has been finished; the hardware
is excessively buggy, and most of its users are on 2.4 still.
There was one partial success report on 2.6; having this work
would let the original Zaurus models upgrade to 2.6 kernels.
> ========== USB_GADGET_SH ==========
> drivers/usb/gadget/ether.c:296:#ifdef CONFIG_USB_GADGET_SH
> ========== USB_GADGET_SUPERH ==========
> drivers/usb/gadget/gadget_chips.h:36:#ifdef CONFIG_USB_GADGET_SUPERH
The _SH is a bug, should be SUPERH. Not sure what happend to the
SH3 UDC ... it seems not to have been ported from 2.4 kernel yet.
(And I could be wrong, but I think SH3 is kind of old now.)
- Dave
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