| Message ID | 0db99bd509c94ea8a80f633022d15235a99391a9.1489995966.git.baolin.wang@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] extcon: usb-gpio: Add level trigger support | expand |
Hi, On 2017년 03월 20일 16:59, Baolin Wang wrote: > Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID > gpios' detection can be triggered by the level trigger on some platforms. > Thus intoduce one property 'extcon-gpio,level-trigger' to identify this > situation. > > Signed-off-by: Baolin Wang <baolin.wang@linaro.org> > --- > .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt > index dfc14f7..191504b 100644 > --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt > +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt > @@ -9,6 +9,9 @@ Required properties: > Either one of id-gpio or vbus-gpio must be present. Both can be present as well. > - id-gpio: gpio for USB ID pin. See gpio binding. > - vbus-gpio: gpio for USB VBUS pin. > +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to It is 'extcon-usb-gpio' instead of 'extcon-gpio'. > +level trigger. If not specified defaults to false, gpio's interrupt flag > +defaults to edge trigger. I understand why you need the new flag. But, I'm not sure it is right way to add the new flag for interrupt flag. IMHO, I think that we need to find the more proper way to get the interrupt flag or maybe, we may need to implement the new helper api to get the interrupt flag for gpio pin when we use the gpio as the interrupt source, > > Example: Examples of extcon-usb-gpio node in dra7-evm.dts as listed below: > extcon_usb1 { > -- Best Regards, Chanwoo Choi Samsung Electronics -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On 24 March 2017 at 19:08, Chanwoo Choi <cw00.choi@samsung.com> wrote: > Hi, > > On 2017년 03월 20일 16:59, Baolin Wang wrote: >> Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID >> gpios' detection can be triggered by the level trigger on some platforms. >> Thus intoduce one property 'extcon-gpio,level-trigger' to identify this >> situation. >> >> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> >> --- >> .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ >> 1 file changed, 3 insertions(+) >> >> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >> index dfc14f7..191504b 100644 >> --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >> +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >> @@ -9,6 +9,9 @@ Required properties: >> Either one of id-gpio or vbus-gpio must be present. Both can be present as well. >> - id-gpio: gpio for USB ID pin. See gpio binding. >> - vbus-gpio: gpio for USB VBUS pin. >> +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to > > It is 'extcon-usb-gpio' instead of 'extcon-gpio'. Sure. > >> +level trigger. If not specified defaults to false, gpio's interrupt flag >> +defaults to edge trigger. > > I understand why you need the new flag. > But, I'm not sure it is right way to add the new flag for interrupt flag. > > IMHO, I think that we need to find the more proper way to get the interrupt flag > or maybe, we may need to implement the new helper api to get the interrupt > flag for gpio pin when we use the gpio as the interrupt source, Yes, I agree with you. We already have helper functions to get interrupt flag from device tree, but we can not get the irq number of GPIO to configure in device tree, then I introduce one new flag to indicate the trigger type. But I like to change the patch if there are any good suggestion. Thanks. -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, Mar 24, 2017 at 6:56 AM, Baolin Wang <baolin.wang@linaro.org> wrote: > Hi, > > On 24 March 2017 at 19:08, Chanwoo Choi <cw00.choi@samsung.com> wrote: >> Hi, >> >> On 2017년 03월 20일 16:59, Baolin Wang wrote: >>> Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID >>> gpios' detection can be triggered by the level trigger on some platforms. >>> Thus intoduce one property 'extcon-gpio,level-trigger' to identify this >>> situation. >>> >>> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> >>> --- >>> .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>> index dfc14f7..191504b 100644 >>> --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>> +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>> @@ -9,6 +9,9 @@ Required properties: >>> Either one of id-gpio or vbus-gpio must be present. Both can be present as well. >>> - id-gpio: gpio for USB ID pin. See gpio binding. >>> - vbus-gpio: gpio for USB VBUS pin. >>> +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to >> >> It is 'extcon-usb-gpio' instead of 'extcon-gpio'. > > Sure. "extcon-gpio" is not a vendor, so don't make it a vendor prefix. >>> +level trigger. If not specified defaults to false, gpio's interrupt flag >>> +defaults to edge trigger. >> >> I understand why you need the new flag. >> But, I'm not sure it is right way to add the new flag for interrupt flag. >> >> IMHO, I think that we need to find the more proper way to get the interrupt flag >> or maybe, we may need to implement the new helper api to get the interrupt >> flag for gpio pin when we use the gpio as the interrupt source, > > Yes, I agree with you. We already have helper functions to get > interrupt flag from device tree, but we can not get the irq number of > GPIO to configure in device tree, then I introduce one new flag to > indicate the trigger type. But I like to change the patch if there are > any good suggestion. Thanks. The extcon binding needs an overhaul in general. I'm not going to take extensions to a broken binding. What's needed is a USB connector binding like we have for HDMI and other video connectors. And for USB-C, those need to be combined. Rob -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On 24 March 2017 at 20:41, Rob Herring <robh+dt@kernel.org> wrote: > On Fri, Mar 24, 2017 at 6:56 AM, Baolin Wang <baolin.wang@linaro.org> wrote: >> Hi, >> >> On 24 March 2017 at 19:08, Chanwoo Choi <cw00.choi@samsung.com> wrote: >>> Hi, >>> >>> On 2017년 03월 20일 16:59, Baolin Wang wrote: >>>> Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID >>>> gpios' detection can be triggered by the level trigger on some platforms. >>>> Thus intoduce one property 'extcon-gpio,level-trigger' to identify this >>>> situation. >>>> >>>> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> >>>> --- >>>> .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ >>>> 1 file changed, 3 insertions(+) >>>> >>>> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>> index dfc14f7..191504b 100644 >>>> --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>> +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>> @@ -9,6 +9,9 @@ Required properties: >>>> Either one of id-gpio or vbus-gpio must be present. Both can be present as well. >>>> - id-gpio: gpio for USB ID pin. See gpio binding. >>>> - vbus-gpio: gpio for USB VBUS pin. >>>> +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to >>> >>> It is 'extcon-usb-gpio' instead of 'extcon-gpio'. >> >> Sure. > > "extcon-gpio" is not a vendor, so don't make it a vendor prefix. OK. > >>>> +level trigger. If not specified defaults to false, gpio's interrupt flag >>>> +defaults to edge trigger. >>> >>> I understand why you need the new flag. >>> But, I'm not sure it is right way to add the new flag for interrupt flag. >>> >>> IMHO, I think that we need to find the more proper way to get the interrupt flag >>> or maybe, we may need to implement the new helper api to get the interrupt >>> flag for gpio pin when we use the gpio as the interrupt source, >> >> Yes, I agree with you. We already have helper functions to get >> interrupt flag from device tree, but we can not get the irq number of >> GPIO to configure in device tree, then I introduce one new flag to >> indicate the trigger type. But I like to change the patch if there are >> any good suggestion. Thanks. > > The extcon binding needs an overhaul in general. I'm not going to take > extensions to a broken binding. What's needed is a USB connector > binding like we have for HDMI and other video connectors. And for > USB-C, those need to be combined. I am not sure I understand your points correctly, could you elaborate on how to modify for extcon? Thanks. -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Rob, On 29 March 2017 at 14:08, Baolin Wang <baolin.wang@linaro.org> wrote: > Hi, > > On 24 March 2017 at 20:41, Rob Herring <robh+dt@kernel.org> wrote: >> On Fri, Mar 24, 2017 at 6:56 AM, Baolin Wang <baolin.wang@linaro.org> wrote: >>> Hi, >>> >>> On 24 March 2017 at 19:08, Chanwoo Choi <cw00.choi@samsung.com> wrote: >>>> Hi, >>>> >>>> On 2017년 03월 20일 16:59, Baolin Wang wrote: >>>>> Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID >>>>> gpios' detection can be triggered by the level trigger on some platforms. >>>>> Thus intoduce one property 'extcon-gpio,level-trigger' to identify this >>>>> situation. >>>>> >>>>> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> >>>>> --- >>>>> .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ >>>>> 1 file changed, 3 insertions(+) >>>>> >>>>> diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>>> index dfc14f7..191504b 100644 >>>>> --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>>> +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt >>>>> @@ -9,6 +9,9 @@ Required properties: >>>>> Either one of id-gpio or vbus-gpio must be present. Both can be present as well. >>>>> - id-gpio: gpio for USB ID pin. See gpio binding. >>>>> - vbus-gpio: gpio for USB VBUS pin. >>>>> +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to >>>> >>>> It is 'extcon-usb-gpio' instead of 'extcon-gpio'. >>> >>> Sure. >> >> "extcon-gpio" is not a vendor, so don't make it a vendor prefix. > > OK. > >> >>>>> +level trigger. If not specified defaults to false, gpio's interrupt flag >>>>> +defaults to edge trigger. >>>> >>>> I understand why you need the new flag. >>>> But, I'm not sure it is right way to add the new flag for interrupt flag. >>>> >>>> IMHO, I think that we need to find the more proper way to get the interrupt flag >>>> or maybe, we may need to implement the new helper api to get the interrupt >>>> flag for gpio pin when we use the gpio as the interrupt source, >>> >>> Yes, I agree with you. We already have helper functions to get >>> interrupt flag from device tree, but we can not get the irq number of >>> GPIO to configure in device tree, then I introduce one new flag to >>> indicate the trigger type. But I like to change the patch if there are >>> any good suggestion. Thanks. >> >> The extcon binding needs an overhaul in general. I'm not going to take >> extensions to a broken binding. What's needed is a USB connector >> binding like we have for HDMI and other video connectors. And for >> USB-C, those need to be combined. Could you elaborate on how to make an overhaul for the extcon binding? I can help to do that and then we can consider to modify my patch. Thanks. > > I am not sure I understand your points correctly, could you elaborate > on how to modify for extcon? Thanks. > > -- > Baolin.wang > Best Regards -- Baolin.wang Best Regards -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt index dfc14f7..191504b 100644 --- a/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt +++ b/Documentation/devicetree/bindings/extcon/extcon-usb-gpio.txt @@ -9,6 +9,9 @@ Required properties: Either one of id-gpio or vbus-gpio must be present. Both can be present as well. - id-gpio: gpio for USB ID pin. See gpio binding. - vbus-gpio: gpio for USB VBUS pin. +- extcon-gpio,level-trigger: Boolean, set this gpio's interrupt flag to +level trigger. If not specified defaults to false, gpio's interrupt flag +defaults to edge trigger. Example: Examples of extcon-usb-gpio node in dra7-evm.dts as listed below: extcon_usb1 {
Now extcon-usb-gpio only supports for GPIO egdge trigger, but VBUS/ID gpios' detection can be triggered by the level trigger on some platforms. Thus intoduce one property 'extcon-gpio,level-trigger' to identify this situation. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- .../devicetree/bindings/extcon/extcon-usb-gpio.txt | 3 +++ 1 file changed, 3 insertions(+) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html