[PATCH 1/2] [ARM] pxa: add minimal ULPI functionality for USB host port 2 on PXA310.

[Eric Miao]

On Wed, Apr 14, 2010 at 6:06 AM, Daniel Mack <daniel at caiaq.de> wrote:
> On Wed, Apr 07, 2010 at 06:05:22PM +0300, Igor Grinberg wrote:
>> Signed-off-by: Igor Grinberg <grinberg at compulab.co.il>
>> Signed-off-by: Mike Rapoport <mike at compulab.co.il>
>> ---
>>  arch/arm/mach-pxa/Makefile      |    1 +
>>  arch/arm/mach-pxa/pxa310-ulpi.c |  240 +++++++++++++++++++++++++++++++++++++++
>>  arch/arm/mach-pxa/pxa310-ulpi.h |   85 ++++++++++++++
>>  3 files changed, 326 insertions(+), 0 deletions(-)
>>  create mode 100644 arch/arm/mach-pxa/pxa310-ulpi.c
>>  create mode 100644 arch/arm/mach-pxa/pxa310-ulpi.h
>
> The USB OTG/ULPI framework could well be reused for that I think. All
> that you would need is a struct otg_io_access_ops with two function
> pointers to read and write registers. Then you can use otg_ulpi_create()
> to set up an ULPI compliant device connected to the bus.
>

Right, that's what I'm thinking as well esp. since ULPI is a standard
(ok, kinds of) and I'm not seeing too much specialty of pxa3xx ULPI
except for the way to access registers. Cannot remember the detail
but the OTG might be a hybrid model on pxa310, and might be a
little bit different from others.