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| author | Todd Broch <tbroch@chromium.org> | 2014-12-14 14:19:33 -0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-01-07 08:45:34 +0000 |
| commit | c0f64b13e981fd0c2901e1c33d7f6e52287ca0df (patch) | |
| tree | 6521f942c2a993d24266e5a12cd71d816ec5fc0b /include/usb_pd.h | |
| parent | faf09e290519569fa1b9d7ac27035606afcb08d6 (diff) | |
| download | chrome-ec-c0f64b13e981fd0c2901e1c33d7f6e52287ca0df.tar.gz | |
pd: vdm: Add VDM related timeouts and busy response handling.
Initial VDM implementation had a very conservative 500msec timeout period. This
CL adds the timeouts defined in the USB-PD specification for various commands.
Additionally it adds a state to the vdm state machine to allow proper busy
response handling.
Signed-off-by: Todd Broch <tbroch@chromium.org>
BRANCH=samus
BUG=chrome-os-partner:30645
TEST=manual,
Alternate mode and flashing still work. Creating a VDM responder which returns
busy shows retries from initiator after at least 100msec.
Change-Id: I79f5da557ca9faf63d2299bb77009f6d98a782bd
Reviewed-on: https://chromium-review.googlesource.com/235682
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Tested-by: Todd Broch <tbroch@chromium.org>
Commit-Queue: Todd Broch <tbroch@chromium.org>
Diffstat (limited to 'include/usb_pd.h')
| -rw-r--r-- | include/usb_pd.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/usb_pd.h b/include/usb_pd.h index 4a89e7d220..b1d72d1402 100644 --- a/include/usb_pd.h +++ b/include/usb_pd.h @@ -139,6 +139,13 @@ enum pd_errors { /* from USB Type-C Specification Table 5-1 */ #define PD_T_AME (1*SECOND) /* timeout from UFP attach to Alt Mode Entry */ +/* VDM Timers ( USB PD Spec Rev2.0 Table 6-30 )*/ +#define PD_T_VDM_BUSY (100*MSEC) /* at least 100ms */ +#define PD_T_VDM_E_MODE (25*MSEC) /* enter/exit the same max */ +#define PD_T_VDM_RCVR_RSP (15*MSEC) /* max of 15ms */ +#define PD_T_VDM_SNDR_RSP (30*MSEC) /* max of 30ms */ +#define PD_T_VDM_WAIT_MODE_E (100*MSEC) /* enter/exit the same max */ + /* function table for entered mode */ struct amode_fx { int (*status)(int port, uint32_t *payload); |