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Groups > linux.kernel > #1366905
| From | Baolin Wang <baolin.wang@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation |
| Date | 2016-03-30 08:20 +0200 |
| Message-ID | <rihDX-1hu-3@gated-at.bofh.it> (permalink) |
| References | (1 earlier) <rguch-6J2-1@gated-at.bofh.it> <rhzjz-3dm-5@gated-at.bofh.it> <rhXYC-3S8-27@gated-at.bofh.it> <rhYrE-46p-11@gated-at.bofh.it> <riewp-7nA-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 30 March 2016 at 10:54, Jun Li <jun.li@nxp.com> wrote: >> >> It is not for udc driver but for power users who want to negotiate >> >> with USB subsystem. >> >> >> > >> > Seems you don't want to guarantee charger type detection is done >> > before gadget connection(pullup DP), right? >> > I see you call usb_charger_detect_type() in each gadget usb state >> changes. >> >> I am not sure I get your point correctly, please correct me if I >> misunderstand you. >> We need to check the charger type at every event comes from the usb gadget >> state changes or the extcon device state changes, which means a new >> charger plugin or pullup. >> > > According to usb charger spec, my understanding is you can't do real charger > detection procedure *after* gadget _connection_(pullup DP), also I don't Why can not? Charger detection is usually from PMIC. > think it's necessary to check charger type at every event from usb gadget. My meaning is not every event from usb gadget. When the usb gadget state changes or the extcon device (maybe GPIO detection) state changes, which means charger plugin or pullup, we need to check the charger type to set current. > Something in gadget driver you can utilize is only vbus detection, and > report diff current by diff usb state if it's a SDP. -- Baolin.wang Best Regards
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[PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-24 13:40 +0100
[PATCH v8 2/4] gadget: Support for the usb charger framework Baolin Wang <baolin.wang@linaro.org> - 2016-03-24 13:40 +0100
[PATCH v8 1/4] gadget: Introduce the usb charger framework Baolin Wang <baolin.wang@linaro.org> - 2016-03-24 13:40 +0100
[PATCH v8 4/4] power: wm831x_power: Support USB charger current limit management Baolin Wang <baolin.wang@linaro.org> - 2016-03-24 13:40 +0100
Re: [PATCH v8 4/4] power: wm831x_power: Support USB charger current limit management Geert Uytterhoeven <geert@linux-m68k.org> - 2016-03-27 10:30 +0200
Re: [PATCH v8 4/4] power: wm831x_power: Support USB charger current limit management Baolin Wang <baolin.wang@linaro.org> - 2016-03-28 08:50 +0200
[PATCH v8 3/4] gadget: Integrate with the usb gadget supporting for usb charger Baolin Wang <baolin.wang@linaro.org> - 2016-03-24 13:40 +0100
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <hzpeterchen@gmail.com> - 2016-03-25 08:20 +0100
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-28 09:00 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <hzpeterchen@gmail.com> - 2016-03-28 09:20 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-28 11:20 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <peter.chen@nxp.com> - 2016-03-29 02:50 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-29 04:10 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Mark Brown <broonie@kernel.org> - 2016-03-29 19:20 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Mark Brown <broonie@kernel.org> - 2016-03-29 19:30 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <hzpeterchen@gmail.com> - 2016-03-30 04:10 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-30 09:10 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <hzpeterchen@gmail.com> - 2016-03-30 09:50 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-30 10:50 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Peter Chen <hzpeterchen@gmail.com> - 2016-03-30 11:30 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-30 11:40 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Jun Li <jun.li@nxp.com> - 2016-03-29 11:20 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-29 11:50 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Jun Li <jun.li@nxp.com> - 2016-03-30 05:00 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-30 08:20 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Jun Li <jun.li@nxp.com> - 2016-03-30 10:50 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-30 11:40 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Jun Li <jun.li@nxp.com> - 2016-03-30 13:00 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Felipe Balbi <balbi@kernel.org> - 2016-03-30 13:30 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-31 07:40 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Felipe Balbi <balbi@kernel.org> - 2016-03-31 08:30 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-31 08:40 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-31 07:30 +0200
RE: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Jun Li <jun.li@nxp.com> - 2016-03-31 08:20 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-31 08:40 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Felipe Balbi <balbi@kernel.org> - 2016-03-31 10:20 +0200
Re: [PATCH v8 0/4] Introduce usb charger framework to deal with the usb gadget power negotation Baolin Wang <baolin.wang@linaro.org> - 2016-03-31 10:30 +0200
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