[PATCH v6 09/10] usb: roles: add USB Type-B GPIO connector driver

Chunfeng Yun chunfeng.yun at mediatek.com
Mon Jun 10 22:59:31 PDT 2019


On Mon, 2019-06-10 at 16:03 +0530, Nagarjuna Kristam wrote:
> Tested-by: Nagarjuna Kristam <nkristam at nvidia.com>
> 
Thanks

> On 29-05-2019 13:13, Chunfeng Yun wrote:
> > Due to the requirement of usb-connector.txt binding, the old way
> > using extcon to support USB Dual-Role switch is now deprecated
> > when use Type-B connector.
> > This patch introduces a driver of Type-B connector which typically
> > uses an input GPIO to detect USB ID pin, and try to replace the
> > function provided by extcon-usb-gpio driver
> > 
> > Signed-off-by: Chunfeng Yun <chunfeng.yun at mediatek.com>
> > ---
> > v6 changes:
> >   1. get usb-role-swtich by usb_role_switch_get()
> > 
> > v5 changes:
> >   1. put usb_role_switch when error happens suggested by Biju
> >   2. don't treat bype-B connector as a virtual device suggested by Rob
> > 
> > v4 changes:
> >   1. remove linux/gpio.h suggested by Linus
> >   2. put node when error happens
> > 
> > v3 changes:
> >   1. treat bype-B connector as a virtual device;
> >   2. change file name again
> > 
> > v2 changes:
> >   1. file name is changed
> >   2. use new compatible
> > ---
> >  drivers/usb/roles/Kconfig           |  11 ++
> >  drivers/usb/roles/Makefile          |   1 +
> >  drivers/usb/roles/typeb-conn-gpio.c | 286 ++++++++++++++++++++++++++++
> >  3 files changed, 298 insertions(+)
> >  create mode 100644 drivers/usb/roles/typeb-conn-gpio.c
> > 
> > diff --git a/drivers/usb/roles/Kconfig b/drivers/usb/roles/Kconfig
> > index f8b31aa67526..d1156e18a81a 100644
> > --- a/drivers/usb/roles/Kconfig
> > +++ b/drivers/usb/roles/Kconfig
> > 





More information about the Linux-mediatek mailing list