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platform/chrome: Add support for v1 of host sleep event

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Add support in code for the new forms of the host sleep event.
Detects the presence of this version of the command at runtime,
and use whichever form the EC supports. At this time, always
request the default timeout, and only report the failing response
via a WARN_ONCE(). Future versions could accept the sleep parameter
from outside the driver, and return the response information to
usermode or elsewhere.

Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Rajat Jain <rajatja@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Evan Green
2019-04-03 14:34:28 -07:00
committed by Lee Jones
parent afe2bb5c4b
commit 7235560ac7
3 changed files with 42 additions and 5 deletions
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6
drivers/platform/chrome/cros_ec_proto.c
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@@ -414,6 +414,12 @@ int cros_ec_query_all(struct cros_ec_device *ec_dev)
else
ec_dev->mkbp_event_supported = 1;
/* Probe if host sleep v1 is supported for S0ix failure detection. */
ret = cros_ec_get_host_command_version_mask(ec_dev,
EC_CMD_HOST_SLEEP_EVENT,
&ver_mask);
ec_dev->host_sleep_v1 = (ret >= 0 && (ver_mask & EC_VER_MASK(1)));
/*
* Get host event wake mask, assume all events are wake events
* if unavailable.