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pd: add delay for power supply startup before sending src cap

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Add delay for power supply startup time before sending source
capabilities packets.

BUG=none
BRANCH=samus
TEST=load on samus, plug in C to A receptacle adapter, see that
VBUS enabled before source cap packet sent.

Change-Id: If3b595e1671d089e859693b420841a639fdb146b
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/227423
This commit is contained in:
Alec Berg
2014-11-04 14:34:00 -08:00
committed by chrome-internal-fetch
parent 3fd064745b
commit 2c83bfc7da
8 changed files with 25 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
board/dingdong/usb_pd_config.h
View File

@@ -137,6 +137,6 @@ static inline int pd_snk_is_vbus_provided(int port)
/* we are acting only as a sink */
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
/* we are never a source : don't care about power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 0 /* us */
#endif /* __USB_PD_CONFIG_H */

4
board/hoho/usb_pd_config.h
View File

@@ -137,6 +137,6 @@ static inline int pd_snk_is_vbus_provided(int port)
/* we are acting only as a sink */
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
/* we are never a source : don't care about power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 0 /* us */
#endif /* __USB_PD_CONFIG_H */

2
board/host/usb_pd_config.h
View File

@@ -36,6 +36,6 @@ int pd_snk_is_vbus_provided(int port);
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 20000 /* us */
#endif /* __USB_PD_CONFIG_H */

4
board/ryu/usb_pd_config.h
View File

@@ -170,7 +170,7 @@ static inline int pd_snk_is_vbus_provided(int port)
/* start as a sink in case we have no other power supply/battery */
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
/* delay for the voltage transition on the power supply, chip max is 16us */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 20000 /* us */
#endif /* __USB_PD_CONFIG_H */

4
board/ryu_p2/usb_pd_config.h
View File

@@ -170,7 +170,7 @@ static inline int pd_snk_is_vbus_provided(int port)
/* start as a sink in case we have no other power supply/battery */
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
/* delay for the voltage transition on the power supply, chip max is 16us */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 20000 /* us */
#endif /* __USB_PD_CONFIG_H */

4
board/samus_pd/usb_pd_config.h
View File

@@ -258,7 +258,7 @@ static inline int pd_snk_is_vbus_provided(int port)
/* start as a sink in case we have no other power supply/battery */
#define PD_DEFAULT_STATE PD_STATE_SNK_DISCONNECTED
/* delay necessary for the voltage transition on the power supply */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 50000 /* us */
/* delay for the voltage transition on the power supply, chip max is 16us */
#define PD_POWER_SUPPLY_TRANSITION_DELAY 20000 /* us */
#endif /* __USB_PD_CONFIG_H */

16
common/usb_pd_protocol.c
View File

@@ -1411,7 +1411,7 @@ void pd_task(void)
pd_set_vconn(port, pd[port].polarity, 1);
#endif
set_state(port, PD_STATE_SRC_DISCOVERY);
set_state(port, PD_STATE_SRC_STARTUP);
caps_count = 0;
#ifdef CONFIG_USB_PD_DUAL_ROLE
/* Keep VBUS up for the hold period */
@@ -1433,6 +1433,15 @@ void pd_task(void)
}
#endif
break;
case PD_STATE_SRC_STARTUP:
/* Wait for power source to enable */
if (pd[port].last_state != pd[port].task_state)
set_state_timeout(
port,
get_time().val +
PD_POWER_SUPPLY_TRANSITION_DELAY,
PD_STATE_SRC_DISCOVERY);
break;
case PD_STATE_SRC_DISCOVERY:
/* Send source cap some minimum number of times */
if (caps_count < PD_CAPS_COUNT) {
@@ -2169,8 +2178,9 @@ static int command_pd(int argc, char **argv)
"SNK_SWAP_SNK_DISABLE", "SNK_SWAP_SRC_DISABLE",
"SNK_SWAP_STANDBY", "SNK_SWAP_COMPLETE",
#endif /* CONFIG_USB_PD_DUAL_ROLE */
"SRC_DISCONNECTED", "SRC_DISCOVERY", "SRC_NEGOCIATE",
"SRC_ACCEPTED", "SRC_TRANSITION", "SRC_READY",
"SRC_DISCONNECTED", "SRC_STARTUP", "SRC_DISCOVERY",
"SRC_NEGOCIATE", "SRC_ACCEPTED", "SRC_TRANSITION",
"SRC_READY",
#ifdef CONFIG_USB_PD_DUAL_ROLE
"SRC_SWAP_INIT", "SRC_SWAP_SNK_DISABLE",
"SRC_SWAP_SRC_DISABLE", "SRC_SWAP_STANDBY",

1
include/usb_pd.h
View File

@@ -504,6 +504,7 @@ enum pd_states {
#endif /* CONFIG_USB_PD_DUAL_ROLE */
PD_STATE_SRC_DISCONNECTED,
PD_STATE_SRC_STARTUP,
PD_STATE_SRC_DISCOVERY,
PD_STATE_SRC_NEGOCIATE,
PD_STATE_SRC_ACCEPTED,