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[0/4] usb: dwc3: Add dual-role support using OTG core

Message ID 1516626688-2302-1-git-send-email-rogerq@ti.com
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Series usb: dwc3: Add dual-role support using OTG core | expand

Message

Roger Quadros Jan. 22, 2018, 1:11 p.m. UTC 
Hi Felipe,

Some platforms (e.g. TI's AM437x) don't have USB ID pin state available
over GPIO/extcon but need to rely on the DWC3 core's OTG block to
get the ID pin state instead.

This series implements simple dual-role functionality using DWC3's OTG block.
Debugfs 'mode' override is also functional so user can switch
between "otg", "host" or "device" modes for debug.

Although system suspend/resume isn't working yet in mainline for AM437x,
I've tested this series for system suspend/resume using a local tree.

This series depends on [1] and [2]

[1] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98771.html

[2] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98848.html

Roger Quadros (4):
  usb: dwc3: prevent setting PRTCAP to OTG from debugfs
  usb: dwc3: core.h: add some register definitions
  usb: dwc3: add dual role support using OTG block
  ARM: dts: am43xx: Enable dual-role mode for USB1

 arch/arm/boot/dts/am437x-gp-evm.dts  |   2 +-
 arch/arm/boot/dts/am437x-sk-evm.dts  |   2 +-
 arch/arm/boot/dts/am43x-epos-evm.dts |   2 +-
 drivers/usb/dwc3/core.c              |  70 ++++-
 drivers/usb/dwc3/core.h              | 111 ++++++++
 drivers/usb/dwc3/drd.c               | 492 +++++++++++++++++++++++++++++++++--
 6 files changed, 650 insertions(+), 29 deletions(-)

-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

Comments

Roger Quadros Feb. 15, 2018, 7:43 a.m. UTC | #1 
Hi Felipe,

On 22/01/18 15:11, Roger Quadros wrote:
> Hi Felipe,

> 

> Some platforms (e.g. TI's AM437x) don't have USB ID pin state available

> over GPIO/extcon but need to rely on the DWC3 core's OTG block to

> get the ID pin state instead.

> 

> This series implements simple dual-role functionality using DWC3's OTG block.

> Debugfs 'mode' override is also functional so user can switch

> between "otg", "host" or "device" modes for debug.

> 

> Although system suspend/resume isn't working yet in mainline for AM437x,

> I've tested this series for system suspend/resume using a local tree.


Any comments on this series?

> 

> This series depends on [1] and [2]

> 

> [1] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98771.html

> 

> [2] https://www.mail-archive.com/linux-usb@vger.kernel.org/msg98848.html

> 

> Roger Quadros (4):

>   usb: dwc3: prevent setting PRTCAP to OTG from debugfs

>   usb: dwc3: core.h: add some register definitions

>   usb: dwc3: add dual role support using OTG block

>   ARM: dts: am43xx: Enable dual-role mode for USB1

> 

>  arch/arm/boot/dts/am437x-gp-evm.dts  |   2 +-

>  arch/arm/boot/dts/am437x-sk-evm.dts  |   2 +-

>  arch/arm/boot/dts/am43x-epos-evm.dts |   2 +-

>  drivers/usb/dwc3/core.c              |  70 ++++-

>  drivers/usb/dwc3/core.h              | 111 ++++++++

>  drivers/usb/dwc3/drd.c               | 492 +++++++++++++++++++++++++++++++++--

>  6 files changed, 650 insertions(+), 29 deletions(-)

> 


-- 
cheers,
-roger

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki