RE: [PATCH v5 0/3] usb: udc: Unify dp control

2015-02-03 Thread Peter Chen
 
 
  On Thu, Jan 29, 2015 at 12:27:23PM +0800, Peter Chen wrote:
  Hi Felipe,
 
 
  Hi Felipe, I see you tree is closed, but below three patches are not
  in your tree, will you queue them now or at next rc? I have some other
  patches based on them, so I would like to know your ideas, thanks.
 
 It's up to Felipe again, but I'd say include the patches that you wrote on 
 top of
 these in the same patchset, because adding an api without users makes it more
 difficult to validate wrt its intended use cases and it also makes potential 
 bugs
 that are introduced in the api patches sit quietly in the tree until you add 
 users,
 at which point it's probable that these apis will need fixing anyway.
 

Ok, it seems most of you agree these two APIs, I will create two patch sets, one
for vbus, and another for function driver to deactivations count, I will add use
cases for both of patch sets.

Peter
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Re: [PATCH v5 0/3] usb: udc: Unify dp control

2015-02-03 Thread Alexander Shishkin
Peter Chen peter.c...@freescale.com writes:

 On Thu, Jan 29, 2015 at 12:27:23PM +0800, Peter Chen wrote:
 Hi Felipe,
 

 Hi Felipe, I see you tree is closed, but below three patches are
 not in your tree, will you queue them now or at next rc? I have
 some other patches based on them, so I would like to know your
 ideas, thanks.

It's up to Felipe again, but I'd say include the patches that you wrote
on top of these in the same patchset, because adding an api without
users makes it more difficult to validate wrt its intended use cases and
it also makes potential bugs that are introduced in the api patches sit
quietly in the tree until you add users, at which point it's probable
that these apis will need fixing anyway.

Regards,
--
Alex
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Re: [PATCH v5 0/3] usb: udc: Unify dp control

2015-02-02 Thread Peter Chen
On Thu, Jan 29, 2015 at 12:27:23PM +0800, Peter Chen wrote:
 Hi Felipe,
 

Hi Felipe, I see you tree is closed, but below three patches are
not in your tree, will you queue them now or at next rc? I have
some other patches based on them, so I would like to know your
ideas, thanks.

Peter

 This is the follow-up: http://marc.info/?l=linux-usbm=140979297227434w=2.
 Sorry for late.
 
 In the first patch, we introduce an internal APIs which are used to
 find corresponding udc according to usb_gadget, it can simplify the code 
 structure.
 
 In the 2nd patch, it maintains flag 'vbus' as vbus status, and try to connect
 or disconnect gadget according to vbus status.
 In the 3rd patch, it maintains count 'deactivations' for connect or disconnect
 gadget according to function/user behavior.
 
 If you agree with handing dp like above way, I will have two patchset, one for
 udc driver for 'vbus' and another for function driver for 'deactivations'.
 
 Thank you.
 
 Changes for v5(all for patch [3/3]):
 - Add mutux_lock to protect deactivation count
 - Add warning if deactivation is 0, but the user still wants to activate
 - Add more comments in commit log and code
 
 Changes for v4:
 - Add Alan's Ack
 
 Changes for v3:
 - Add mutex_lock protect for list_del(udc-list) at usb_del_gadget_udc 
 [Patch 1/3]
 - Drop former [Patch 2/4] which is useless
 
 Changes for v2:
 - introduce two internal APIs to simplify the code structure.
 - Teach patch 3/4 and 4/4 to use the new introduced API.
 
 Peter Chen (3):
   usb: udc: add usb_gadget_find_udc
   usb: udc: add usb_udc_vbus_handler
   usb: udc: add usb_udc_activation_handler
 
  drivers/usb/gadget/udc/udc-core.c | 118 
 +-
  include/linux/usb/gadget.h|   9 +++
  2 files changed, 101 insertions(+), 26 deletions(-)
 
 -- 
 1.9.1
 

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Best Regards,
Peter Chen
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[PATCH v5 0/3] usb: udc: Unify dp control

2015-01-28 Thread Peter Chen
Hi Felipe,

This is the follow-up: http://marc.info/?l=linux-usbm=140979297227434w=2.
Sorry for late.

In the first patch, we introduce an internal APIs which are used to
find corresponding udc according to usb_gadget, it can simplify the code 
structure.

In the 2nd patch, it maintains flag 'vbus' as vbus status, and try to connect
or disconnect gadget according to vbus status.
In the 3rd patch, it maintains count 'deactivations' for connect or disconnect
gadget according to function/user behavior.

If you agree with handing dp like above way, I will have two patchset, one for
udc driver for 'vbus' and another for function driver for 'deactivations'.

Thank you.

Changes for v5(all for patch [3/3]):
- Add mutux_lock to protect deactivation count
- Add warning if deactivation is 0, but the user still wants to activate
- Add more comments in commit log and code

Changes for v4:
- Add Alan's Ack

Changes for v3:
- Add mutex_lock protect for list_del(udc-list) at usb_del_gadget_udc [Patch 
1/3]
- Drop former [Patch 2/4] which is useless

Changes for v2:
- introduce two internal APIs to simplify the code structure.
- Teach patch 3/4 and 4/4 to use the new introduced API.

Peter Chen (3):
  usb: udc: add usb_gadget_find_udc
  usb: udc: add usb_udc_vbus_handler
  usb: udc: add usb_udc_activation_handler

 drivers/usb/gadget/udc/udc-core.c | 118 +-
 include/linux/usb/gadget.h|   9 +++
 2 files changed, 101 insertions(+), 26 deletions(-)

-- 
1.9.1

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