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| author | Alec Berg <alecaberg@chromium.org> | 2014-12-31 14:18:32 -0800 |
|---|---|---|
| committer | Alec Berg <alecaberg@chromium.org> | 2015-01-10 23:43:25 +0000 |
| commit | d83bd6b892e696c13f3584b5d3e1e0f51aafe710 (patch) | |
| tree | 366798000953d830de5ed6c5902a8c76e570cdde /board/dingdong | |
| parent | 193e23509f8b9df44852b4581c357f2d7caed0aa (diff) | |
| download | chrome-ec-d83bd6b892e696c13f3584b5d3e1e0f51aafe710.tar.gz | |
pd: implement new type-C connect state machine
Implement the new type-C connect state machine which removes
lock and hold times and adds a debounce time to make sure
CC lines settle before going into the attached state.
This also adds detection of accessories, but doesn't do anything
when an accessory is detected.
BUG=chrome-os-partner:33680
BRANCH=samus
TEST=test samus connected zinger and samus connected to samus. make
sure that the connection is always formed. also tested with a third
party with old state machine implementation and formed a connection
every time.
Change-Id: I91a7a6031bc35082cc19d7697142e4aa92ef46f2
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/238210
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'board/dingdong')
| -rw-r--r-- | board/dingdong/usb_pd_config.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/board/dingdong/usb_pd_config.h b/board/dingdong/usb_pd_config.h index ba6e545a3f..db46d83b73 100644 --- a/board/dingdong/usb_pd_config.h +++ b/board/dingdong/usb_pd_config.h @@ -120,7 +120,8 @@ static inline void pd_set_host_mode(int port, int enable) {} static inline int pd_adc_read(int port, int cc) { - return adc_read_channel(ADC_CH_CC1_PD); + /* only one CC line, assume other one is always low */ + return (cc == 0) ? adc_read_channel(ADC_CH_CC1_PD) : 0; } static inline int pd_snk_is_vbus_provided(int port) |