this feature.
Output will be in the format: "0x%08x\n".
+
+What: /sys/kernel/debug/<cros-ec-device>/suspend_timeout_ms
+Date: August 2022
+KernelVersion: 6.1
+Description:
+ Some ECs have a feature where they will track transitions of
+ a hardware-controlled sleep line, such as Intel's SLP_S0 line,
+ in order to detect cases where a system failed to go into deep
+ sleep states. The suspend_timeout_ms file controls the amount of
+ time in milliseconds the EC will wait before declaring a sleep
+ timeout event and attempting to wake the system.
+
+ Supply 0 to use the default value coded into EC firmware. Supply
+ 65535 (EC_HOST_SLEEP_TIMEOUT_INFINITE) to disable the EC sleep
+ failure detection mechanism. Values in between 0 and 65535
+ indicate the number of milliseconds the EC should wait after a
+ sleep transition before declaring a timeout. This includes both
+ the duration after a sleep command was received but before the
+ hardware line changed, as well as the duration between when the
+ hardware line changed and the kernel sent an EC resume command.
+
+ Output will be in the format: "%u\n".
if (ec_dev->host_sleep_v1) {
buf.u.req1.sleep_event = sleep_event;
buf.u.req1.suspend_params.sleep_timeout_ms =
- EC_HOST_SLEEP_TIMEOUT_DEFAULT;
+ ec_dev->suspend_timeout_ms;
buf.msg.outsize = sizeof(buf.u.req1);
if ((sleep_event == HOST_SLEEP_EVENT_S3_RESUME) ||
ec_dev->max_passthru = 0;
ec_dev->ec = NULL;
ec_dev->pd = NULL;
+ ec_dev->suspend_timeout_ms = EC_HOST_SLEEP_TIMEOUT_DEFAULT;
ec_dev->din = devm_kzalloc(dev, ec_dev->din_size, GFP_KERNEL);
if (!ec_dev->din)
debugfs_create_x32("last_resume_result", 0444, debug_info->dir,
&ec->ec_dev->last_resume_result);
+ debugfs_create_u16("suspend_timeout_ms", 0664, debug_info->dir,
+ &ec->ec_dev->suspend_timeout_ms);
+
ec->debug_info = debug_info;
dev_set_drvdata(&pd->dev, ec);