[U-Boot] [PATCH RFC v2 0/6] usb: host: Add driver model support

[Vivek Gautam]

Hi Simon,


On Wed, Feb 18, 2015 at 6:45 PM, Simon Glass <sjg at chromium.org> wrote:
> +mailing list
>
> On 18 February 2015 at 06:14, Simon Glass <sjg at chromium.org> wrote:
>> Hi Vivek,
>>
>> On 18 February 2015 at 03:40, Vivek Gautam <gautam.vivek at samsung.com> wrote:
>>> Hi Marek, Simon,
>>>
>>> This patch-series comes as a update for an earlier posted series[1]
>>> "[PATCH RFC 0/2] usb: host: Add a wrapper layer for mutiple host support"
>>> which was posted long back.
>>>
>>> We had discussion to introduce the driver model instead of the approach used
>>> in [1]. The driver model seems pretty straight-forward and easier to implement
>>>  besides giving a clean approach to use multiple host controller types, viz.
>>> EHCI, XHCI or OHCI simultaneously on a platform which has such provision.
>>>
>>> It's rather bad on my side that it took so long to post the updated version.
>>> Got busy with the projects. :-(
>>>
>>> So here's the RFC-v2 which implements the driver model approach.
>>> I have added support on OHCI, EHCI and XHCI and enabled EHCI and XHCI
>>>  on Exynos5250 machines. Though not tested thoroughly, i can see EHCI
>>> and XHCI working together (enumerating the Root hubs).
>>>
>>> Let me know you comments on what you think of current approach.
>>
>> Great to see this - will take a look.
>> Did you see my RFC on 30th Jan? E.g. this:

sorry i did not check that patch earlier. Thanks for pointing out.

>>
>> https://patchwork.ozlabs.org/patch/434995/

Will take a look at the series.

>>
>> Regards,
>> Simon
>>
>>>
>>> Thanks
>>> Vivek
>>>
>>> [1] [PATCH RFC 0/2] usb: host: Add a wrapper layer for mutiple host support
>>> http://lists.denx.de/pipermail/u-boot/2014-June/182559.html
>>>
>>> Vivek Gautam (6):
>>>   usb: Rename usb_submit_int_msg() API to usb_int_msg()
>>>   dm: usb: Make necessary changes in framework for driver model
>>>   dm: usb-host: Add UCLASS driver for USB
>>>   dm: usb-host: Add support for driver model in o/e/xhci.
>>>   arm: exynos5: Enable EHCI and XHCI hcds through device tree.
>>>   configs: smdk5250: Enable using XHCI and EHCI together
>>>
>>>  arch/arm/dts/exynos5.dtsi           |    8 +++
>>>  common/usb.c                        |  101 ++++++++++++++++++++++++++++++---
>>>  common/usb_hub.c                    |    2 +-
>>>  common/usb_kbd.c                    |    4 +-
>>>  common/usb_storage.c                |    2 +-
>>>  drivers/usb/host/Kconfig            |    9 +++
>>>  drivers/usb/host/Makefile           |    3 +
>>>  drivers/usb/host/ehci-hcd.c         |   36 +++++++++---
>>>  drivers/usb/host/ohci-hcd.c         |   35 +++++++++---
>>>  drivers/usb/host/usb-uclass.c       |  107 +++++++++++++++++++++++++++++++++++
>>>  drivers/usb/host/xhci.c             |   34 ++++++++---
>>>  include/configs/exynos5-common.h    |    3 +
>>>  include/configs/exynos5250-common.h |    3 +
>>>  include/configs/smdk5250.h          |    2 +
>>>  include/dm/uclass-id.h              |    1 +
>>>  include/usb.h                       |   62 +++++++++++++++-----
>>>  16 files changed, 365 insertions(+), 47 deletions(-)
>>>  create mode 100644 drivers/usb/host/usb-uclass.c
>>>
>>> --
>>> 1.7.10.4
>>>
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-- 
Best Regards
Vivek Gautam
Samsung R&D Institute, Bangalore
India