Hi,
This patch series adds support for big endian non-PCI UHCI HCs and
then enables the GRUSBHC HCD to make use of the added functionality.
Patch 1: Add support for big endian mmio. This patch also has two other
changes: 1) Add 'const' to uhci_hcd argument and 2) Check if we need to
support PCI I/O accesses while supporting MMIO HCs.
Patch 2: Patch from Alan Stern
Patch 3: Add support for big endian descriptors.
Patch 4: Patch som sparc-2.6 tree adding {read,write}*_be for SPARC_LEON
Patch 5: Add detection and support for big endian to uhci-grlib.c
Patches are against usb-next.
Each patch has been compile tested on SPARC32 (LEON). Tests have been
run with the full series applied on x86 with Intel UHCI HC (PCI),
GR-LEON4-ITX (GRUSBHC, little endian) and on a custom LEON3 system
with big endian GRUSBHC.
Changes in V6:
* Added acked-by to patches 1, 3 and 5
After comments from Alan Stern
* Updated patch 5 to use readw instead of readl
* Updated comment added by patch 5
Changes in V5:
* Patch 4 is now patch 5
* Add patch from sparc-2.6 tree as patch 4
Changes in V4:
* Remove arch-specific read/write additions to uhci-hcd.h
Changes in V3:
* Patch 4: Updated added comment
After comments from Alan Stern:
* Patch 1: Change if defined to ifdef/ifndef
* Patch 2: Updated patch description
* Patch 3: Don't define *_cpup. Change to #ifdef
After comment from Sergei Shtylyov:
* Patch 4: Corrected PORTSC example
Changes in V2:
* Updated description above
After comments from Alan Stern:
* Dropped patch 1
* Rewrote patch 2 (now patch 1) to use solution for big endian mmio
that is closer to the solution used in the EHCI HCD.
Also added check to see if we need to support PCI I/O accesses (perhaps
this change should belong to another patch but it only changes behaviour
for the recently added uhci-grlib.c so I doubt that there will be any
regressions).
* Patch 2: New patch from Alan Stern
* Patch 3: Rebase on new patch from AS. Do not move uhci_hcd definition.
* Patch 4: Updated to assign uhci->big_endian_mmio instead of function
pointers.
Best regards,
Jan
arch/sparc/include/asm/io.h | 13 +++
drivers/usb/host/Kconfig | 10 +++
drivers/usb/host/uhci-debug.c | 71 ++++++++++--------
drivers/usb/host/uhci-grlib.c | 14 ++++
drivers/usb/host/uhci-hcd.c | 16 ++--
drivers/usb/host/uhci-hcd.h | 169 +++++++++++++++++++++++++++++++----------
drivers/usb/host/uhci-q.c | 131 ++++++++++++++++----------------
7 files changed, 278 insertions(+), 146 deletions(-)
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