[PATCH v4 00/23] usb gadget update for OTG 2.0

[Li Jun <jun.li-KZfg59tc24xl57MIdRCFDg@public.gmane.org>]

Changes for v4:
- Add usb_otg_caps structure for all otg related capability attributes.
- Use one interface: of_usb_get_otg_caps to get all otg capabilities
  from DT, including otg_rev, hnp/srp/adp support.
- Add usb_otg_descriptor_alloc interface to allocate otg descriptor
  for better code sharing.
- Improve description of dt-binding doc. 

Changes for v3:
- For simple, add one more otg descriptor structure: usb_otg20_descriptor for OTG 2.0
  and later release as Alan suggested. 
- Use disable flags for OTG features property.
- Move out memory allocation from usb_otg_descriptor_init() to its caller. 

This is a follow-up of Macpaul Lin's previous patchset to resolve usb
gadget driver working with OTG 2.0, and set otg features by not only
usb driver config but also usb hardware property in DT, main changes:
1. Add usb_otg20_descriptor definition for OTG 2.0 which introduces bcdOTG
   field for otg revision, bcdOTG can be passed via device tree.
2. OTG features(SRP/HNP/ADP) can be decided by combination of usb HW
   properties and usb driver config.
3. Change the chipidea usb driver to use the updated mechanism.
4. Remove static usb otg descriptor definition, but allocate and init it
   according to otg capabilities in each gadget driver, if otg capabilities
   is not defined for legacy platforms, the usb otg descriptor content is
   kept the same as current static definition.

Li Jun (19):
  usb: otg: add usb_otg_caps structure for otg capabilities
  doc: dt-binding: usb: add otg related properties
  usb: common: add API to get usb otg features from device tree
  usb: chipidea: set usb gadeget's otg capabilities
  usb: chipidea: update ci_otg_is_fsm_mode conditions
  usb: gadget: add usb otg descriptor allocate and init interface
  usb: gadget: configfs: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: ether: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: acm_ms: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: audio: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: cdc2: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: g_ffs: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: hid: allocate and init otg descriptor by otg capabilities
  usb: gadget: mass_storage: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: multi: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: ncm: allocate and init otg descriptor by otg capabilities
  usb: gadget: printer: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: serial: allocate and init otg descriptor by otg
    capabilities
  usb: gadget: zero: allocate and init otg descriptor by otg
    capabilities

Macpaul Lin (4):
  usb: add usb_otg20_descriptor for OTG 2.0 and above
  usb: add USB_OTG_ADP definition
  usb: add usb_otg_caps to usb_gadget structure.
  usb: gadget: composite: add USB_DT_OTG request handling

 Documentation/devicetree/bindings/usb/generic.txt | 15 ++++++
 drivers/usb/chipidea/ci.h                         |  5 +-
 drivers/usb/chipidea/core.c                       |  3 ++
 drivers/usb/chipidea/debug.c                      |  1 +
 drivers/usb/chipidea/udc.c                        |  7 ++-
 drivers/usb/common/common.c                       | 29 ++++++++++++
 drivers/usb/gadget/composite.c                    | 27 +++++++++++
 drivers/usb/gadget/config.c                       | 56 +++++++++++++++++++++++
 drivers/usb/gadget/configfs.c                     | 29 ++++++++----
 drivers/usb/gadget/legacy/acm_ms.c                | 29 ++++++------
 drivers/usb/gadget/legacy/audio.c                 | 28 ++++++------
 drivers/usb/gadget/legacy/cdc2.c                  | 29 ++++++------
 drivers/usb/gadget/legacy/ether.c                 | 38 +++++++++------
 drivers/usb/gadget/legacy/g_ffs.c                 | 29 ++++++------
 drivers/usb/gadget/legacy/hid.c                   | 30 ++++++------
 drivers/usb/gadget/legacy/mass_storage.c          | 29 ++++++------
 drivers/usb/gadget/legacy/multi.c                 | 39 ++++++++++------
 drivers/usb/gadget/legacy/ncm.c                   | 28 ++++++------
 drivers/usb/gadget/legacy/printer.c               | 25 +++++-----
 drivers/usb/gadget/legacy/serial.c                | 29 ++++++------
 drivers/usb/gadget/legacy/zero.c                  | 32 ++++++-------
 include/linux/usb/chipidea.h                      |  1 +
 include/linux/usb/gadget.h                        |  6 +++
 include/linux/usb/of.h                            |  7 +++
 include/linux/usb/otg.h                           | 15 ++++++
 include/uapi/linux/usb/ch9.h                      | 12 +++++
 26 files changed, 392 insertions(+), 186 deletions(-)

-- 
1.9.1

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